CN107369478A - A kind of integrated heap of thermal capacitance type - Google Patents
A kind of integrated heap of thermal capacitance type Download PDFInfo
- Publication number
- CN107369478A CN107369478A CN201710641305.4A CN201710641305A CN107369478A CN 107369478 A CN107369478 A CN 107369478A CN 201710641305 A CN201710641305 A CN 201710641305A CN 107369478 A CN107369478 A CN 107369478A
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- China
- Prior art keywords
- poisonous substance
- cylinder
- steam generator
- substance tank
- pressure vessel
- Prior art date
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 134
- 231100000614 poison Toxicity 0.000 claims abstract description 133
- 239000000126 substance Substances 0.000 claims abstract description 130
- 230000007096 poisonous effect Effects 0.000 claims abstract description 129
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 54
- 229910052796 boron Inorganic materials 0.000 claims abstract description 54
- 239000002826 coolant Substances 0.000 claims abstract description 22
- 230000007423 decrease Effects 0.000 claims abstract description 10
- 231100000331 toxic Toxicity 0.000 claims abstract description 4
- 230000002588 toxic effect Effects 0.000 claims abstract description 4
- 239000000446 fuel Substances 0.000 claims description 23
- 239000000498 cooling water Substances 0.000 claims description 19
- 241000628997 Flos Species 0.000 claims description 12
- 239000002828 fuel tank Substances 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000010025 steaming Methods 0.000 claims description 3
- 239000002574 poison Substances 0.000 claims 4
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 15
- 239000004327 boric acid Substances 0.000 description 15
- 230000008901 benefit Effects 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 210000004907 gland Anatomy 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C7/00—Control of nuclear reaction
- G21C7/06—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section
- G21C7/22—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section by displacement of a fluid or fluent neutron-absorbing material, e.g. by adding neutron-absorbing material to the coolant
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C1/00—Reactor types
- G21C1/04—Thermal reactors ; Epithermal reactors
- G21C1/06—Heterogeneous reactors, i.e. in which fuel and moderator are separated
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/02—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices
- G21C15/14—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices from headers; from joints in ducts
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C9/00—Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices
- G21C9/02—Means for effecting very rapid reduction of the reactivity factor under fault conditions, e.g. reactor fuse; Control elements having arrangements activated in an emergency
- G21C9/033—Means for effecting very rapid reduction of the reactivity factor under fault conditions, e.g. reactor fuse; Control elements having arrangements activated in an emergency by an absorbent fluid
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
The invention provides a kind of integrated heap of thermal capacitance type, including pressure vessel cylinder, bottom in pressure vessel cylinder sets Toxic tank, poisonous substance tank includes poisonous substance tank inner casing and poisonous substance tank shell, form the upper boron water cavity for accommodating boron water between poisonous substance tank inner casing and poisonous substance tank shell, be provided with passive reactor shut-off system on the poisonous substance tank above upper boron water cavity, reactor core is provided among poisonous substance tank interior bottom portion, steam generator is provided with outside poisonous substance tank, pressure vessel inner barrel is provided with drive device；Upper chamber is provided with pressure vessel cylinder above steam generator, upper chamber connects poisonous substance tank with steam generator, the decline passway of annular is formed between poisonous substance tank and pressure vessel cylinder, the circumference of the lower end of reactor core is provided with the coolant flow passages of radial direction, and coolant flow passages connect decline passway with reactor core.The invention eliminates the control rod in conventional pressurized water heap, is a kind of heap-type that will be mounted in poisonous substance tank in pressure vessel.
Description
Technical field
The invention belongs to nuclear reactor technology field, more particularly, to a kind of integrated heap of thermal capacitance type.
Background technology
The history of human use's nuclear energy existing decades, nuclear power also plays important in the energy resource structure of countries in the world
Role, for different application demands, various countries propose the novel reactor design of many kinds.
Wherein, pressurized water reactor turns into world wide using most due to the advantage that its energy density is high, financial cost is low
For one of extensive reactor heap-type, current presurized water reactor is used for powering on a large scale, and whole pressurized water reactor volume is also excessively
Huge, for the remote areas that inconvenience is directly powered for island etc., it is a kind of effective solution to develop portable nuclear power platform
Certainly scheme, and the volume for reducing reactor is one of technology of most critical.
The content of the invention
In view of this, the invention is directed to a kind of integrated heap of thermal capacitance type, to propose a kind of new architecture
Thermal capacitance type integrated heap.
To reach above-mentioned purpose, what the technical scheme of the invention was realized in：
A kind of integrated heap of thermal capacitance type, including pressure vessel cylinder, the bottom in pressure vessel cylinder is provided with and pressure
The poisonous substance tank of the concentric setting of thimble body, poisonous substance tank include poisonous substance tank inner casing and poisonous substance tank shell, poisonous substance tank inner casing and poisonous substance tank
Form the upper boron water cavity for accommodating boron water between shell, be provided with the poisonous substance tank above upper boron water cavity for controlling reactor
Passive reactor shut-off system, be provided with reactor core among poisonous substance tank interior bottom portion, poisonous substance tank is up-narrow and down-wide, outside the narrow portion of poisonous substance tank
Steam generator is provided with, steam generator is used for the heat exchange of secondary side circuit, and pressure vessel inner barrel is provided with for driving
The drive device of dynamic primary side loop circulation flow；
It is provided with upper chamber in pressure vessel cylinder above steam generator, upper chamber is by inside poisonous substance tank and steam generation
Device is connected, and the decline passway of annular is formed between poisonous substance tank and pressure vessel cylinder, and the circumference of the lower end of reactor core is provided with radial direction
Coolant flow passages, coolant flow passages connect decline passway with reactor core；
Lower boron water cavity is provided with pressure vessel cylinder below reactor core, upper boron water cavity connects with lower boron water cavity, under reactor core
End sets Toxic circulation device, and poisonous substance circulation device connects reactor core with lower boron water cavity.
Further, the steam generator includes steam generator inner cylinder, steam generator outer barrel and sent out positioned at steam
Steam generator intermediate cylinder between raw device inner cylinder, steam generator outer barrel, steam generator inner cylinder are enclosed on the top of poisonous substance tank,
The lower end of steam generator outer barrel is fixed in one end to water manifold, the other end to water manifold not with steam generator inner cylinder
Contacted with the lateral wall of poisonous substance tank, the lower end of steam generator intermediate cylinder is fixed on the upper surface to water manifold, steam generation
Device intermediate cylinder both sides to inlet opening and apopore is had on water manifold, feed pipe is located at steam generator outer barrel and steam
In the first ring cavity between generator intermediate cylinder, one end of feed pipe is connected with inlet opening, the other end of feed pipe and setting
Feed-water intake connection on pressure vessel cylinder；
Helix tube is accommodated in the second ring cavity between steam generator inner cylinder and steam generator intermediate cylinder, helix tube encloses
Upward around steam generator inner cylinder spiral, the lower end of helix tube is connected with apopore, and the upper end of helix tube is with being arranged on pressure
Steam (vapor) outlet connection on thimble body.
Further, the reactor core includes fuel assembly, and fuel assembly is located in fuel tank, fuel assembly and fuel tank
Lower end is separately fixed on fuel slab, and the lower end of fuel slab and the upper end of annular slab are affixed, and the lower end of annular slab is connected with circle
Lower cover, fuel slab, annular slab and circular lower cover form a closed cooling water circulation cavity, opened on the ring wall of annular slab
There are the coolant flow passages led to for coolant flow, poisonous substance circulation device is arranged on circular lower cover, and poisonous substance circulation device passes through circle
Lower cover and be vertically arranged, the upper end of poisonous substance circulation device be located in cooling water circulation cavity, poisonous substance circulate device lower end be located under
In boron water cavity, coolant flow passages are located at the top of lower boron water cavity, and lower boron water cavity is located at the lower section of annular slab.
Further, the drive device includes being arranged on the main circulation pump of pressure vessel cylinder top, the rotation of main circulation pump
Shaft axis overlap with the axis of pressure vessel cylinder, and main circulation pump includes the motor outside pressure vessel cylinder, motor
One end of output shaft and main shaft is affixed, and the other end of main shaft is connected with impeller, and main shaft is extend into inside the pump case of cylindrical shape,
Pump case is concentric with main shaft, and the upper end of pump case is fixed on pressure vessel cylinder, and impeller is located inside pump case, above impeller
Upper chamber in pump case side wall on be provided with floss hole for discharging cooling water, floss hole connects upper chamber and poisonous substance tank
It is logical.
Further, the impeller is arranged on inside the steam generator inner cylinder above poisonous substance tank, and the caliber of pump case is small
In the interior caliber of steam generator inner cylinder, then steam generator inner cylinder extends up to the top of feed-water intake and steam (vapor) outlet
Affixed, the side of steam generator inner cylinder towards its end and the inwall of pressure vessel cylinder after the direction bending of pressure vessel cylinder inboard wall
Some inner cylinder spout holes corresponding with outlet are provided with wall.
Further, the bottom of the pump case is fixed on steam generator inner cylinder by fixed plate.
Further, feed-water intake and steam (vapor) outlet are separately positioned in the side wall of the pressure vessel cylinder at upper chamber, are given
The quantity of water inlet and steam (vapor) outlet is respectively four, and feed-water intake and steam (vapor) outlet are uniformly arranged alternately, feed-water intake and steaming
The axial line of vapor outlet is in same level and intersects at a point.
Further, the passive reactor shut-off system includes cylinder block, is provided with piston rod in cylinder block, piston rod it is upper
End is provided with piston, and the diameter of piston is more than the diameter of piston rod, and the end set of the piston rod above piston has valve cover plate,
Cylinder block is fixed on valve seat, and cylinder connected entrance is offered in the side wall of the cylinder block below piston, inside poisonous substance tank
Cylinder connected entrance connects cylinder interior with boron water cavity, and valve cover plate, which is located at, is used for the pressure for experiencing a side loop outside poisonous substance tank
Power, the lower surface of valve cover plate abuts with the upper surface of cylinder block when the pressure of a side loop is more than the pressure in boron water cavity,
The lower surface of valve cover plate separates with the upper surface of cylinder block when the pressure of side loop is less than the pressure in boron water cavity.
Further, the pressure vessel cylinder includes upper cover and low head, passes through screw thread between upper cover and low head
Connection, poisonous substance tank are arranged in low head, and drive device is arranged in upper cover.
Further, the poisonous substance tank includes poisonous substance tank hypomere, poisonous substance tank changeover portion and poisonous substance tank epimere, poisonous substance tank transition
Section is tapered tubular, and the caliber of poisonous substance tank epimere is less than the caliber of poisonous substance tank hypomere, and steam generator inner cylinder is enclosed on poisonous substance tank
Section outside, the internal diameter of steam generator inner cylinder are equal to the external diameter of poisonous substance tank epimere.
Relative to prior art, a kind of integrated heap of thermal capacitance type described in the invention has the advantage that：
(1) the invention eliminates the control rod in conventional pressurized water heap, is that one kind will be mounted in pressure vessel in poisonous substance tank
Interior heap-type, the interface between poisonous substance and a side loop employ the passive system for relying on main circulation pump discharge pressure and acting
System；
(2) the invention flexible design, the pressure difference of heap in-core and the temperature of poisonous substance tank can independent settings；
(3) the invention eliminates control bar system, realizes reactor control with poisonous substance tank built-in boric acid water, simplifies
Mechanism, the reliability of mechanism is improved, reactor capability is adjusted by the boric acid water in the poisonous substance tank being enclosed in outside reactor core, when
When main circulation pump pressure declines, the passive reactor shut-off system on poisonous substance tank top is opened, and boric acid water is automatically injected reactor core, is realized slow
Shutdown；
The cooling water of (4) side loops enters in pressure vessel inner loop, secondary side cooling water to water manifold, warp
Helix tube contacts abundant heat exchange with primary side water, is flowed out from steam (vapor) outlet, and primary side cooling water flows from top to bottom, secondary side cooling
Water flows from the bottom up, and heat exchange is uniform.
Brief description of the drawings
The accompanying drawing for forming the part of the invention is used for providing further understanding the invention, present invention wound
The schematic description and description made is used to explain the invention, does not form the improper restriction to the invention.
In accompanying drawing：
Fig. 1 is the overall structure diagram of the invention integration heap；
Fig. 2 is the structural representation of the main circulation pump described in the invention embodiment；
Fig. 3 is the structural representation of the steam generator described in the invention embodiment；
Fig. 4 is the front view of the reactor core described in the invention embodiment；
Fig. 5 is the longitudinal sectional view of the reactor core described in the invention embodiment；
Fig. 6 is the top view of the reactor core described in the invention embodiment；
Fig. 7 is the structural representation of the passive reactor shut-off system described in the invention embodiment；
Fig. 8 is the top view of the integrated heap described in the invention embodiment.
Description of reference numerals：
1st, pressure vessel cylinder；101st, upper cover；102nd, low head；103rd, feed-water intake；104th, steam (vapor) outlet；2nd, major cycle
Pump；201st, motor；202nd, main shaft；203rd, impeller；204th, pump case；2041st, floss hole；2042nd, bell-mouth structure of air；205th, it is outer
Shell upper flange；206th, pump inner casing；207th, inner casing upper flange；208th, gland seal device；209th, internal lower house；210th, water middle (center) bearing；
211st, electronic board；212nd, it is indirectly connected with device；3rd, steam generator；301st, steam generator inner cylinder；302nd, outside steam generator
Cylinder；303rd, steam generator intermediate cylinder；304th, to water manifold；3041st, inlet opening；3042nd, apopore；305th, feed pipe；306、
Helix tube；307th, porous support plate；308th, ring flat-plate；309th, tube sheet；310th, cover plate；4th, reactor core；401st, fuel assembly；402nd, fuel
Case；403rd, fuel slab；404th, annular slab；4041st, coolant flow passages；405th, circular lower cover；406th, poisonous substance circulation device；407th, it is malicious
Thing expanded absorber；408th, retainer ring；4081st, fixing hole；4082nd, upper fixed block；4083rd, lower fixed block；5th, poisonous substance tank；501、
Poisonous substance tank inner casing；502nd, poisonous substance tank shell；503rd, poisonous substance tank epimere；504th, poisonous substance tank changeover portion；505th, poisonous substance tank hypomere；6th, it is non-
Active reactor shut-off system；601st, cylinder block；602nd, piston rod；603rd, piston；6031st, screw thread；604th, valve cover plate；605th, valve seat；
606th, with plain block；607th, cylinder connected entrance；608th, gap；A, the first ring cavity；B, the second ring cavity；C, cooling water circulation cavity；d、
Lower boron water cavity；E, upper boron water cavity；F, upper chamber；G, decline passway.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the invention can
To be mutually combined.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the invention and simplifies description, rather than instruction
Or imply that signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore be not understood that
For the limitation to the invention.In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that instruction
Or imply relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", " second " etc. are defined
Feature can express or implicitly include one or more this feature.In the description of the invention, unless separately
It is described, " multiple " are meant that two or more.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in the description of the invention
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, on being understood by concrete condition
State concrete meaning of the term in the invention.
Describe the invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in Fig. 1 to Fig. 8 a kind of integrated heap of thermal capacitance type, including pressure vessel cylinder 1, in pressure vessel cylinder 1 under
Portion is provided with the poisonous substance tank 5 with the 1 concentric setting of pressure vessel cylinder, and poisonous substance tank 5 includes poisonous substance tank inner casing 501 and poisonous substance tank shell
502, the upper boron water cavity e for accommodating boron water, upper boron water cavity e tops are formed between poisonous substance tank inner casing 501 and poisonous substance tank shell 502
Poisonous substance tank 5 on be provided with passive reactor shut-off system 6 for controlling reactor.Heap is provided among the interior bottom portion of poisonous substance tank 5
Core 4, poisonous substance tank 5 is up-narrow and down-wide, and steam generator 3 is provided with outside the narrow portion of poisonous substance tank 5, and steam generator 3 is direct current spiral
Tubular type.Steam generator 3 is used for the heat exchange of secondary side circuit, and pressure vessel cylinder 1 is internally provided with for driving primary side to return
The drive device that road circulates.
As shown in figure 1, be provided with upper chamber f in the pressure vessel cylinder 1 of the top of steam generator 3, upper chamber f is by poisonous substance tank
5 inside connect with steam generator 3, form annular decline passway g between poisonous substance tank 5 and pressure vessel cylinder 1, under reactor core 4
The circumference at end is provided with the coolant flow passages 4041 of radial direction, and coolant flow passages 4041 connect decline passway g with reactor core 4.Pressure
The lower section of reactor core 4 is provided with lower boron water cavity d in thimble body 1, and upper boron water cavity e connects with lower boron water cavity d, and the lower end of reactor core 4 is set
Toxic circulation device 406, poisonous substance circulation device 406 connect reactor core 4 with lower boron water cavity d.
As shown in figure 3, steam generator 3 includes steam generator inner cylinder 301, steam generator outer barrel 302 and positioned at steaming
Steam generator intermediate cylinder 303 between vapour generator inner cylinder 302, steam generator outer barrel 302.Steam generator inner cylinder 302
The top of poisonous substance tank 5 is enclosed on, the lower end of steam generator outer barrel 302 is fixed in one end to water manifold 304, to water manifold 304
Lateral wall of the other end not with steam generator inner cylinder 302 and poisonous substance tank 5 contact.Under steam generator intermediate cylinder 303
End is fixed on the upper surface to water manifold 304, the both sides of steam generator intermediate cylinder 303 to being had on water manifold 304
Inlet opening 3041 and apopore 3042.Feed pipe 305 be located at steam generator outer barrel 302 and steam generator intermediate cylinder 303 it
Between the first ring cavity a in, one end of feed pipe 305 is connected with inlet opening 3041, the other end of feed pipe 305 and is arranged on pressure
Feed-water intake 103 on power thimble body 1 connects.
As shown in figure 3, the interior receivings of the second ring cavity b between steam generator inner cylinder 301 and steam generator intermediate cylinder 303
There are some equally distributed helix tubes 306, helix tube 306 is upward around inner cylinder spiral, the lower end of helix tube 306 and water outlet
Hole 3042 is connected, and the upper end of helix tube 306 is connected with the steam (vapor) outlet 104 being arranged on pressure vessel cylinder 1.Helix tube 306
External diameter is 19mm, and helix tube 306 has some, and the spacing between helix tube 306 and helix tube 306 is 25mm.In order to avoid by
Toll bar vortex vibration frequency caused by the eigentone and primary side water of helix tube 306 causes the possibility of vibration, spiral
Pipe 306 is supported by some porous support plates 307, and porous support plate 307 is located at steam generator inner cylinder 301 and sent out with steam
Arranged between raw device intermediate cylinder 303 and in radioactivity, helix tube 306 passes through the spiral of porous support plate 307.Preferably, it is more
The quantity of hole supporting plate 307 is 16 pieces.In order that the spiral space for obtaining helix tube 306 is bigger, heat exchange is more thorough, steams
Vapour generator intermediate cylinder 303 is located at steam generator inner cylinder 301 with the centre of steam generator outer barrel 302 close to steam generator
The side of outer barrel 302.
As shown in figure 3, it is provided with the outer wall of steam generator outer barrel 302 solid for fixed ring flat-plate 308, ring flat-plate 308
It is scheduled on pressure vessel cylinder 1.Tube sheet 309 is connected with feed-water intake 103 and at steam (vapor) outlet 104 respectively, tube sheet 309 is used respectively
Cover plate 310 is connected with the top of fixed feed pipe 305 and helix tube 306, the first ring cavity a, feed pipe 305 passes through cover plate 310.
As shown in figs. 1 and 8, feed-water intake 103 and steam (vapor) outlet 104 are separately positioned on the pressure vessel cylinder 1 at upper chamber f
Side wall on, the quantity of feed-water intake 103 and steam (vapor) outlet 104 is respectively four, and feed-water intake 103 and steam (vapor) outlet 104 are equal
Even to be arranged alternately, the axial line of feed-water intake 103 and steam (vapor) outlet 104 in same level and intersects at a point.
As shown in Figs. 4-6, reactor core 4 includes fuel assembly 401, and fuel assembly 401 is located in fuel tank 402, fuel assembly
401 and the lower end of fuel tank 402 be separately fixed at the lower end of fuel slabs 403 and the upper end of annular slab 404 on fuel slab 403 and consolidate
Connect, the lower end of annular slab 404 is connected with circular lower cover 405, and fuel slab 403, annular slab 404 and circular lower cover 405 form
One closed cooling water circulation cavity c.Coolant flow passages 4041 are opened on the ring wall of annular slab 404, coolant flow passages
4041 be several, and coolant flow passages 4041 are uniformly distributed around the ring wall of annular slab 404.Some poisonous substance circulation devices 406 are set
Put on circular lower cover 405, poisonous substance circulation device 406 is through circular lower cover 405 and is vertically arranged, poisonous substance circulation device 406
Upper end is located in cooling water circulation cavity c, and the lower end of poisonous substance circulation device 406 is located in lower boron water cavity d, coolant flow passages 4041
In lower boron water cavity d top, lower boron water cavity d is located at the lower section of annular slab 404.The upper end of poisonous substance circulation device 406 is located at cooling agent
The lower section of runner 4041, the lower end of poisonous substance circulation device 406 is close to lower boron water cavity d bottom.
As it can be seen in figures 5 and 6, the poisonous substance expansion absorption for reducing boric acid water concentration is additionally provided with circular lower cover 405
Device 407.Poisonous substance circulation device 406 and poisonous substance expanded absorber 407 are uniformly distributed.Hexagonal structure is easier to smoothly insertion, lifting,
Robot manipulator structure in the water used when more adaptation is reloaded.In order to capture conveniently, fuel assembly 401 is arranged to the structure of hexagon,
The cross-sectional area of fuel assembly 401 is hexagon.Use is connected with the lateral wall of the annular slab 404 of the lower section of coolant flow passages 4041
In fixed retainer ring 408.Some fixing holes 4081 for being used for fixed vertical direction are offered in retainer ring 408.Fixture
It is fixed on through fixing hole 4081 on pressure vessel cylinder 1.
As shown in Fig. 2 drive device includes being arranged on the main circulation pump 2 on the top of pressure vessel cylinder 1, the rotation of main circulation pump 2
Shaft axis overlap with the axis of pressure vessel cylinder 1, and main circulation pump 2 includes the motor 201 outside pressure vessel cylinder 1, electricity
Motivation 201 is supported on the top of pressure vessel cylinder 1 by electronic board 211.The output shaft of motor 201 and the one of main shaft 202
End is affixed by being indirectly connected with device 212, and the other end of main shaft 202 is connected with impeller 203.Main shaft 202 extend into cylindrical shape
Inside pump case 204, pump case 204 and main shaft 202 are concentric, and the upper end of pump case 204 is fixed in by shell upper flange 205
On pressure vessel cylinder 1.Impeller 203 is located inside pump case 204, and the lower end of impeller 203 is slightly protruded above under pump case 204
End.Some floss holes for discharging cooling water are provided with the side wall of pump case 204 in the upper chamber f of the top of impeller 203
2041, floss hole 2041 connects upper chamber f with poisonous substance tank 5.Floss hole 2041 uniformly divides around the axial line of pump case 204
Cloth.
As shown in figure 1, impeller 203 is arranged on inside the steam generator inner cylinder 301 of the top of poisonous substance tank 5, pump case 204
Caliber is less than the interior caliber of steam generator inner cylinder 301, and steam generator inner cylinder 301 extends up to feed-water intake 103 and steamed
Then the top of vapor outlet 104 is consolidated towards its end and the inwall of pressure vessel cylinder 1 after the direction bending of the inwall of pressure vessel cylinder 1
Connect, some inner cylinder spout holes corresponding with floss hole 2041 are provided with the side wall of steam generator inner cylinder 301.Floss hole 2041
The steam generator inner cylinder 301 of lower section is fixed on the upper end of steam generator inner cylinder 301 by fixed plate.
As shown in Fig. 2 it is provided between the main shaft 202 and pump case 204 of the top of impeller 203 for supports main shaft 202
Pump inner casing 206, pump inner casing 206 are cylindrical shape, and pump inner casing 206 and main shaft 202 are concentric, and pump inner casing 206 is close to motor 201
One end is connected with inner casing upper flange 207, and inner casing upper flange 207 is fixed in the upper end of shell upper flange 205, main shaft 202 and inner casing
Connected between upper flange 207 by gland seal device 208.For supports main shaft 202, the pump inner casing 206 of the lower section of shell upper flange 205
Internal orifice dimension be slightly larger than the diameter of main shaft 202, the ring wall inner hollow of the pump inner casing 206 of the lower section of shell upper flange 205.Pump inner casing
Internal lower house 209 is provided between 206 lower end and impeller 203, is provided with internal lower house 209 for fixed main shaft
202 water middle (center) bearing 210.Water middle (center) bearing 210 is hydrostatic bearing.
As shown in Fig. 2 sucked for the ease of primary side recirculated water is easier by main circulation pump 2, the lower end of pump case 204
It is arranged to downward opening bell-mouth structure of air 2042.In order to make full use of the inner space of reactor pressure vessel, reduce whole
The volume of individual pressure vessel, while a series of problems caused by thermal expansion during reactor operation can be reduced.Main shaft 202 is set
Put and overlapped in the top of pressure vessel, the axis of main shaft 202 with the axis of pressure vessel.
As shown in fig. 7, passive reactor shut-off system 6 is hydraulic pressure operating valve, hydraulic pressure operating valve is arranged on the upper end of poisonous substance tank 5,
The quantity of hydraulic pressure operating valve has three.Passive reactor shut-off system 6 includes cylinder block 601, and piston rod is provided with cylinder block 601
602, the upper end of piston rod 602 is provided with piston 603, and the diameter of piston 603 is more than the diameter of piston rod 602, the top of piston 603
The end set of piston rod 602 have valve cover plate 604.Cylinder block 601 is fixed on valve seat 605, the cylinder of the lower section of piston 603
Cylinder connected entrance 607 is offered in the side wall of body 601, the cylinder connected entrance 607 inside poisonous substance tank 5 by cylinder interior with it is upper
Boron water cavity e is connected, and valve cover plate 604 is located at the pressure that the outside of poisonous substance tank 5 is used to experience a side loop.The pressure of side loop
The lower surface of valve cover plate 604 abuts with the upper surface of cylinder block 601 when power is more than the pressure in upper boron water cavity e, now boron water
Chamber is in air-tight state, when the pressure of a side loop is less than the pressure in upper boron water cavity e the lower surface of valve cover plate 604 with
The upper surface of cylinder block 601 is separated, and now boron water cavity is opened.
As shown in fig. 7, the side wall of piston 603 is provided with screw thread 6031, use is left between piston 603 and the madial wall of cylinder
In the gap 608 for the 5mm that boric acid water passes through.For the ease of the circulation of boric acid water, the upward bent outward in edge of valve cover plate 604
Song, the longitudinal section of valve cover plate 604 is inverted herringbone structure.The lower end of piston rod 602 is provided with plain block 606.Trim
The inner hollow of block 606, with inside plain block 606 filled with water.Piston 603 and it is full of boric acid water with the space between plain block 606.Cylinder
Connected entrance 607 is arranged on between plain block 606 and piston 603.
As shown in figure 1, pressure vessel cylinder 1 includes upper cover 101 and low head 102, upper cover 101 and low head 102 it
Between be connected through a screw thread, poisonous substance tank 5 is arranged in low head 102, and drive device is arranged in upper cover 101.Poisonous substance tank 5 includes
Poisonous substance tank hypomere 505, poisonous substance tank changeover portion 504 and poisonous substance tank epimere 503, poisonous substance tank changeover portion 504 are tapered tubular, poisonous substance tank
The caliber of epimere 503 is less than the caliber of poisonous substance tank hypomere 505, and steam generator inner cylinder 301 is enclosed on the outside of poisonous substance tank epimere 503,
The internal diameter of steam generator inner cylinder 301 is equal to the external diameter of poisonous substance tank epimere 503.
The operation principle of the invention：
Primary side cooling water is in pressure vessel inner loop, and primary side cooling water is after the heating of reactor core 4, in main circulation pump
Floss hole 2041 is moved across in the presence of 2 from the bottom up and inner cylinder spout hole is discharged into upper chamber f, then from steam generation
The gap of the helix tube 306 of device 3 is returned in reactor core 4 to flowing down by decline passway g and coolant flow passages 4041, is completed once
The circulation of cooling water.
Secondary side cooling water enters helix tube 306 from the warp of feed-water intake 103 to water manifold 304, through helix tube 306 and once
Side cooling water contact fully heat exchange, finally flows out from steam (vapor) outlet 104, realizes cooling and the secondary side circuit of side loop
Heating.Reactor is by the boric acid water regulation reactor capability being enclosed in the poisonous substance tank 5 outside reactor core 4, when main circulation pump 2 is pressed
When power declines, three passive reactor shut-off systems 6 of the upper end of poisonous substance tank 5 are opened, and boric acid water is automatically injected in reactor core 4, realize reaction
The slow shutdown of heap.
The operation principle of main circulation pump 2：Whole main circulation pump 2 drives main shaft 202 by motor 201 by being spaced connector
Being rotated, the primary side recirculated water in pressure vessel cylinder 1 flows up in the presence of impeller 203, and by pump case
Floss hole 2041 on 204 emits water, is exchanged heat into the top of steam generator 3.In order to reduce weight, improve
Rigidity, the bottom of main shaft 202 are hollow, and top is solid, and main shaft 202 passes through shell upper flange 205.The footpath of whole main circulation pump 2
Supported to load by the journal bearing of the water middle (center) bearing 210 and motor 201 that are located at lower housing portion, axial load is by motor
201 cod support.The water middle (center) bearing 210 of main circulation pump 2 is the hydrostatic bearing acted on by main circulation pump 2 from pressure, this
Kind bearing does not need lubricating oil, and its principle is non-contacting in operation, so abrasion are few, essentially without maintenance.In main shaft
202 tops have gland seal device 208 to seal the high temperature and high pressure steam that reactor pressure vessel top is full of.Main circulation pump 2 is installed
At the surface axis of pressure vessel cylinder 1, the inner space of reactor vessel cylinder 1 is not only taken full advantage of, is reduced
The volume of whole pressure vessel cylinder 1, while a series of problems caused by thermal expansion during reactor operation can be reduced, make core
Reactor plant is compact-sized, and reliability is high, security is good.
The operation principle of steam generator 3：Steam generator 3 uses deep bid tubular type, is designed as four Hes of feed-water intake 103
Four steam (vapor) outlets 104 are adjacent to be alternately arranged.The secondary side water of steam generator 3 is entered by feed-water intake 103, passes through feed pipe
305 downwardly into in water manifold 304, and the water to water manifold 304 enters lower part helical pipe 306 under the effect of the pressure
In, the reclaimed water of helix tube 306, by being exchanged heat with the water of primary side outside pipe, forms steam to steam (vapor) outlet during rising
104, so as to which pushing turbine does work and drives electrical power generators.The current direction of primary side and secondary side is on the contrary, can fully exchange heat.
By giving water management to single feed-water intake 103, the Power operation of steam generator 1/4 can be achieved, if not blocking, steam hair
Raw device 3 is with Power operation at full capacity.
This steam generator 3 is applied not only on nuclear reactor, can also use the occasion in other heat exchange, such as firepower hair
On the heat exchange heat-transfer equipment of electric system or chemical industry.The invention uses pressure vessel and the integrated design of steam generator 3
The inner space of reactor pressure vessel is taken full advantage of, while four feed-water intakes 103 and steam (vapor) outlet 104 are set, effectively
The volume for reducing whole steam generator 3, improve heat exchange efficiency.In addition, pass through the control to four feed-water intakes 103
The power adjusting of steam generator 3 can be achieved, operation is easy to operate.
The passive shutdown of reactor is realized by passive reactor shut-off system 6, when primary side circuit pressure is high, by
It is more than the pressure of boric acid water, under pressure, the lower surface of valve cover plate 604 and cylinder block in the pressure of a side loop
601 upper surface abuts, the closing of boron water cavity, and the boric acid water in lower boron water cavity d can not enter reactor core 4.Poisonous substance circulation device 406, it is
A kind of cellular mixing preventer, it can control boron water-carrying capacity under differential pressure action, realize dense to a side loop boron water
The regulation of degree, so as to realize the regulation to reactor capability.When the rotating speed of main circulation pump 2 reduces, or in a side loop
Pressure when declining, the lower surface of valve cover plate 604 separates with the upper surface of cylinder block 601, and the boric acid water in boron water cavity can be with
Flowed out by the gap 608 between piston 603 and cylinder, the boric acid water of outflow is then introduced by lower boron water cavity d by drainage tube
Interior, under the effect of the pressure, the boric acid water in lower boron water cavity d is flowed into reactor core 4 by poisonous substance circulation device 406, and boric acid has suction
The effect of neutron is received, it is achieved thereby that passive shutdown.
The preferred embodiment of the invention is the foregoing is only, is not intended to limit the invention creation, it is all at this
Within the spirit and principle of innovation and creation, any modification, equivalent substitution and improvements made etc., the invention should be included in
Protection domain within.
Claims (10)
- A kind of 1. integrated heap of thermal capacitance type, it is characterised in that：Including pressure vessel cylinder (1), in pressure vessel cylinder (1) under Portion is provided with the poisonous substance tank (5) with pressure vessel cylinder (1) concentric setting, and poisonous substance tank (5) includes poisonous substance tank inner casing (501) and poison Thing tank shell (502), the upper boron water cavity for accommodating boron water is formed between poisonous substance tank inner casing (501) and poisonous substance tank shell (502) (e) the passive reactor shut-off system (6) for controlling reactor, poisonous substance, are provided with the poisonous substance tank (5) above upper boron water cavity (e) Reactor core (4) is provided among tank (5) interior bottom portion, poisonous substance tank (5) is up-narrow and down-wide, and steaming is provided with outside the narrow portion of poisonous substance tank (5) Vapour generator (3), steam generator (3) are used for the heat exchange of secondary side circuit, and pressure vessel cylinder (1) is internally provided with for driving The drive device of dynamic primary side loop circulation flow；Upper chamber (f) is provided with pressure vessel cylinder (1) above steam generator (3), upper chamber (f) is by poisonous substance tank (5) Portion is connected with steam generator (3), and the decline passway (g) of annular, reactor core are formed between poisonous substance tank (5) and pressure vessel cylinder (1) (4) circumference of lower end is provided with the coolant flow passages (4041) of radial direction, and coolant flow passages (4041) are by decline passway (g) and heap Core (4) connects；Lower boron water cavity (d) is provided with below pressure vessel cylinder (1) interior reactor core (4), upper boron water cavity (e) connects with lower boron water cavity (d) Lead to, the lower end of reactor core (4) sets Toxic circulation device (406), and poisonous substance circulation device (406) connects reactor core (4) and lower boron water cavity (d) It is logical.
- 2. the integrated heap of thermal capacitance type according to claim 1, it is characterised in that：The steam generator (3) includes Steam generator inner cylinder (301), steam generator outer barrel (302) and outside steam generator inner cylinder (301), steam generator Steam generator intermediate cylinder (303) between cylinder (302), steam generator inner cylinder (301) are enclosed on the top of poisonous substance tank (5), steam The lower end of vapour generator outer barrel (302) is fixed in one end to water manifold (304), the other end to water manifold (304) not with The lateral wall of steam generator inner cylinder (301) and poisonous substance tank (5) is contacted, and the lower end of steam generator intermediate cylinder (303) is fixed in On upper surface to water manifold (304), steam generator intermediate cylinder (303) both sides to have on water manifold (304) into Water hole (3041) and apopore (3042), feed pipe (305) are located at steam generator outer barrel (302) and steam generator intermediate cylinder (303) in the first ring cavity (a) between, one end of feed pipe (305) is connected with inlet opening (3041), feed pipe (305) it is another Outer one end is connected with the feed-water intake (103) being arranged on pressure vessel cylinder (1)；Helix tube is accommodated in the second ring cavity (b) between steam generator inner cylinder (301) and steam generator intermediate cylinder (303) (306), helix tube (306) is upward around steam generator inner cylinder (301) spiral, the lower end of helix tube (306) and apopore (3042) connect, the upper end of helix tube (306) is connected with the steam (vapor) outlet (104) being arranged on pressure vessel cylinder (1).
- 3. the integrated heap of thermal capacitance type according to claim 1, it is characterised in that：The reactor core (4) includes fuel stack Part (401), fuel assembly (401) are located in fuel tank (402), and the lower end of fuel assembly (401) and fuel tank (402) is solid respectively It is scheduled on fuel slab (403), the lower end and the upper end of annular slab (404) of fuel slab (403) are affixed, the lower end of annular slab (404) Be connected with circular lower cover (405), fuel slab (403), annular slab (404) and circular lower cover (405) form one it is closed Cooling water circulation cavity (c), the coolant flow passages (4041) for cooling agent circulation, poison are provided with the ring wall of annular slab (404) Logistics is led to device (406) and is arranged on circular lower cover (405), and poisonous substance circulation device (406) is through circular lower cover (405) and vertical Set, the upper end of poisonous substance circulation device (406) be located in cooling water circulation cavity (c), poisonous substance circulate device (406) lower end be located under In boron water cavity (d), coolant flow passages (4041) are located at the top of lower boron water cavity (d), and lower boron water cavity (d) is located at annular slab (404) Lower section.
- 4. the integrated heap of thermal capacitance type according to claim 1, it is characterised in that：The drive device includes being arranged on The main circulation pump (2) on pressure vessel cylinder (1) top, the rotation axis of main circulation pump (2) and the axis weight of pressure vessel cylinder (1) Close, main circulation pump (2) is included positioned at the outside motor (201) of pressure vessel cylinder (1), the output shaft of motor (201) and master One end of axle (202) is affixed, and the other end of main shaft (202) is connected with impeller (203), and main shaft (202) extend into cylindrical shape Pump case (204) is internal, and pump case (204) and main shaft (202) are concentric, and the upper end of pump case (204) is fixed in pressure thimble On body (1), impeller (203) is located inside pump case (204), the pump case (204) in upper chamber (f) above impeller (203) Side wall on be provided with floss hole (2041) for discharging cooling water, floss hole (2041) by upper chamber (f) and poisonous substance tank (5) even It is logical.
- 5. the integrated heap of thermal capacitance type according to claim 4, it is characterised in that：The impeller (203) is arranged on poison Steam generator inner cylinder (301) above thing tank (5) is internal, and the caliber of pump case (204) is less than steam generator inner cylinder (301) Interior caliber, steam generator inner cylinder (301) extends up to the top of feed-water intake (103) and steam (vapor) outlet (104) then It is affixed towards its end and the inwall of pressure vessel cylinder (1) after the direction bending of pressure vessel cylinder (1) inwall, in steam generator Some inner cylinder spout holes corresponding with outlet are provided with the side wall of cylinder (301).
- 6. the integrated heap of thermal capacitance type according to claim 4, it is characterised in that：The bottom of the pump case (204) It is fixed on by fixed plate on steam generator inner cylinder (301).
- 7. the integrated heap of thermal capacitance type according to claim 1, it is characterised in that：Feed-water intake (103) and steam go out Mouth (104) is separately positioned in the side wall of pressure vessel cylinder (1) at place of upper chamber (f), feed-water intake (103) and steam (vapor) outlet (104) quantity is respectively four, and feed-water intake (103) and steam (vapor) outlet (104) are uniformly arranged alternately, feed-water intake (103) In same level and intersected at a point with the axial line of steam (vapor) outlet (104).
- 8. the integrated heap of thermal capacitance type according to claim 1, it is characterised in that：The passive reactor shut-off system (6) Including cylinder block (601), piston rod (602) is provided with cylinder block (601), the upper end of piston rod (602) is provided with piston (603), the diameter of piston (603) is more than the diameter of piston rod (602), and the end of the piston rod (602) above piston (603) is set Valve cover plate (604) is equipped with, cylinder block (601) is fixed on valve seat (605), the side of the cylinder block (601) below piston (603) Cylinder connected entrance (607) is offered on wall, the cylinder connected entrance (607) internal positioned at poisonous substance tank (5) is by cylinder interior and boron water Chamber connects, and valve cover plate (604), which is located at, is used for the pressure for experiencing a side loop, the pressure of a side loop outside poisonous substance tank (5) The lower surface of valve cover plate (604) abuts with the upper surface of cylinder block (601) when power is more than the pressure in boron water cavity, and primary side returns The lower surface of valve cover plate (604) separates with the upper surface of cylinder block (601) when the pressure on road is less than the pressure in boron water cavity.
- 9. the integrated heap of thermal capacitance type according to claim 1, it is characterised in that：The pressure vessel cylinder (1) includes Upper cover (101) and low head (102), connected between upper cover (101) and low head (102) by screw thread (6031), poisonous substance Tank (5) is arranged in low head (102), and drive device is arranged in upper cover (101).
- 10. the integrated heap of thermal capacitance type according to claim 1, it is characterised in that：The poisonous substance tank (5) includes poisonous substance Tank hypomere (505), poisonous substance tank changeover portion (504) and poisonous substance tank epimere (503), poisonous substance tank changeover portion (504) are tapered tubular, poison The caliber of thing tank epimere (503) is less than the caliber of poisonous substance tank hypomere (505), and steam generator inner cylinder (301) is enclosed on poisonous substance tank On the outside of section (503), the internal diameter of steam generator inner cylinder (301) is equal to the external diameter of poisonous substance tank epimere (503).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710641305.4A CN107369478A (en) | 2017-07-31 | 2017-07-31 | A kind of integrated heap of thermal capacitance type |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710641305.4A CN107369478A (en) | 2017-07-31 | 2017-07-31 | A kind of integrated heap of thermal capacitance type |
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| Publication Number | Publication Date |
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| CN107369478A true CN107369478A (en) | 2017-11-21 |
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| CN201710641305.4A Pending CN107369478A (en) | 2017-07-31 | 2017-07-31 | A kind of integrated heap of thermal capacitance type |
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| CN108320822A (en) * | 2018-01-04 | 2018-07-24 | 中国核电工程有限公司 | A kind of modular small presurized water reactor that steam generator is integrated |
| CN108630334A (en) * | 2018-05-02 | 2018-10-09 | 北京卫星环境工程研究所 | The micro-integrated reactor of Natural Circulation of full ambient engine |
| CN109801720A (en) * | 2019-01-15 | 2019-05-24 | 东华理工大学 | A kind of built-in multipurpose change caliber spiral heat exchanger of nuclear reactor |
| CN110628572A (en) * | 2019-11-11 | 2019-12-31 | 中国农业科学院兰州畜牧与兽药研究所 | Yak DNA extraction element |
| CN113370446A (en) * | 2021-06-24 | 2021-09-10 | 合肥海景新材料科技有限公司 | EPS foam material forming device and forming process thereof |
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| CN113370446A (en) * | 2021-06-24 | 2021-09-10 | 合肥海景新材料科技有限公司 | EPS foam material forming device and forming process thereof |
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Application publication date: 20171121 |