CN106523726A - Two-phase fluid large-flow precise control device - Google Patents
Two-phase fluid large-flow precise control device Download PDFInfo
- Publication number
- CN106523726A CN106523726A CN201610998014.6A CN201610998014A CN106523726A CN 106523726 A CN106523726 A CN 106523726A CN 201610998014 A CN201610998014 A CN 201610998014A CN 106523726 A CN106523726 A CN 106523726A
- Authority
- CN
- China
- Prior art keywords
- spring
- cavity
- driver
- bevel gear
- precise control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/54—Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/002—Actuating devices; Operating means; Releasing devices actuated by temperature variation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Flow Control (AREA)
Abstract
The invention discloses a two-phase fluid large-flow precise control device. The device comprises a feedback adjusting device, a flow adjusting device and a box body; throttling is achieved through a valve element, the valve element is formed by embedding of 120-degree circular-arc structures composed of three same telescopic blocks, a cavity and a second spring, the valve element can shrink in the circumferential direction, and a throttling opening is formed in the inner circle of the formed round; according to the flow adjusting device, a large conical gear is pushed by a pair of conical gears to rotate, rotation of the large conical gear is converted into radial movement of a sliding block through a rectangular spiral guide rail on the end face of the large conical gear, the sliding block drives a circular-arc combination body on the sliding block to shrink in the circumferential direction, and a round throttling opening with the determined area is obtained; if the temperature and the pressure of fluid are changed, two feedback adjusting devices drive the circular-arc combination bodies connected with the devices to move in the radial direction, the area of the throttling hole is changed, feedback is achieved, and the correct flow is obtained.
Description
Technical field
The invention belongs to fluid machinery technical field, more particularly to it is a kind of big to the two-phase fluid comprising solid small particles
The device of precise control of flew.
Background technology
With the development of industrial technology, in the industries such as heat supply, supply, fuel feeding, Jing is frequently with flow control valve to fluid
Precise control of flew.Flow control valve is usually the area for changing restriction in the case where pressure reduction is ensured, realizes controlling stream
The purpose of amount.Change choke area size when, its shape is changed into other profiled shapes from circle, have in runner
There is valve element in portion, and these structures cause fluid flow line discontinuous, and crushing is larger, and in range, the linearity is poor, if fluid is bag
Two-phase fluid containing solid small particles, in the square position and spool position of the retention mouth of control valve, weares and teares than more serious so that
The control valve life-span is relatively low, while precise decreasing after abrasion.
Therefore, for the precise control of the two-phase fluid big flow comprising solid small particles, it is proposed that a kind of to comprising little
The device of the two-phase fluid big flow precise control of granular solids.
The content of the invention
In order to solve the above problems, the present invention provides a kind of device of two-phase fluid big flow precise control, and the device is tied
Structure is reasonable, compact, can temperature and pressure compensation, ensure that restriction all the time for circle, crushing is little, miscellaneous to the solid in liquid unwise
Sense, long service life.
The present invention is achieved by following technical solution：
A kind of two-phase fluid big flow precise control device, including feedback regulation device, flow regulator and casing；Institute
Flow regulator is stated installed in box house；The feedback regulation device is connected with flow regulator by leading screw；
The feedback regulation device includes driver and leading screw；The driver is cylindrical shape；On the driver inwall
Offer rectangular slot；Self-locking spring is installed in the rectangular slot；The leading screw passes through self-locking spring and extends transmission
Device；Extend driver end on the leading screw and offer screw thread；The screw thread is connected with hex nut screw thread；The hexagonal spiral shell
Mother is connected with the cavity boss in flow regulator by screw；
The flow regulator includes regulate transmission device and valve element；
The regulate transmission device includes handle, bevel gear, bevel gear wheel, slide block and the first spring；The handle passes through
Key is connected with the axle of bevel gear；The axle of the bevel gear is arranged on box house, and the bevel gear is meshed with bevel gear wheel；Institute
State bevel gear wheel to be placed on box house bottom surface；Rectangular coil guide rail is offered on the bevel gear wheel upper surface；The rectangle
Helical guideway is coordinated with slide block bottom face；Rectangular channel is offered on the upper end of slide block face；First is provided with the rectangular channel
Spring；
The valve element includes telescopic block, cavity and second spring；The telescopic block is circular arc；The telescopic block vertical end
Several cylinder boss are provided with face；Second spring is mounted on the cylinder boss；The second spring is placed in cavity and opens
If groove in；The cavity lower end is provided with the square block of projection；Circle is provided with the left and right sides of the square block
Post boss；First spring is installed on the cylinder boss；The cylinder boss is arranged in the rectangular channel open up on slide block；Institute
State to be equipped with cavity lateral wall and be equipped with cavity boss.
Further, the telescopic block, cavity and second spring constitute 120 ° of arc structure.
Further, the arc structure of the telescopic block, cavity and second spring composition is three groups.
Further, cover plate is provided with the cavity.
Further, the cylinder boss number is three.
Further, the casing includes upper end cover, lower box, sealing gasket and bolt；The upper end cover and lower box are logical
Cross bolt to be attached, between the upper end cover and lower box, be provided with sealing gasket.
Further, the rectangular slot length is the 1/3 of driver length；The two ends of the self-locking spring are stuck in
In rectangular slot.
Further, the self-locking spring passes through driver end cap seal in driver.
Present configuration is reasonable, compact, can temperature and pressure compensation, ensure that restriction all the time for circle, crushing is little, to liquid
Solid in body is miscellaneous insensitive, long service life.
Description of the drawings
Fig. 1 is the partial sectional view of the present invention；
Fig. 2 is the explosive view of feedback regulation device of the present invention and flow regulator；
Fig. 3 is the flow regulator Structure explosion diagram of the present invention；
Fig. 4 is the top view of the present invention；
Fig. 5 is the rotation profile of C-C positions in Fig. 4；
Partial enlarged drawings of the Fig. 6 for Fig. 5；
Fig. 7 is the half sectional view of the present invention；
Fig. 8 is driver enlarged drawing；
Fig. 9 is driver internal explosion figure in Fig. 8.
Reference is as follows：
1- feedback regulation devices, 2- flow regulators, 3- casings, 101- drivers, 102- rectangular slots, 103- self-lockings
Spring, 104- driver end caps, 105- head bolts, 106- leading screws, 107- screw threads, 108- hex nuts, 109- pins, 110-
Screw, 201- rectangular coil guide rails, 202- bevel gear wheels, 203- sealing rings, 204- slide blocks, the first springs of 205-, 206- first
Spring eye, 207- square blocks, the hole of 208- second springs, 209- cavitys, 210- cover plates, 211- cover screws, 212- cavitys
Boss, 213- second springs, 214- telescopic blocks, 215- cylinder boss, 216- keys, 217- handles, 218- bevel gears, 219- squares
Shape groove, 301- bolts, 302- upper end covers, 303- sealing rings, 304- nuts, 305- fluid intakes, 306- lower boxes, 307- fluids
Outlet.
Specific embodiment
For the present invention will be further described, it is described in conjunction with accompanying drawing：
With reference to accompanying drawing 1, a kind of two-phase fluid big flow precise control device, including feedback regulation device 1, Flow-rate adjustment dress
2, casing, 3 three parts are put, flow regulator 2 is arranged on inside casing 3；Feedback regulation device 1 passes through leading screw 106 and flow
Adjusting means 2 is connected；
With reference to accompanying drawing 6,7 and Fig. 8, feedback regulation device 1 include driver 101, self-locking spring 103, leading screw 106, hexagonal
Nut 108, pin 109, screw 110.Driver 101 is coaxial with leading screw 106, and leading screw 106 passes through driver 101 and self-locking spring
103, rectangular slot 102 is provided with driver 101；The two ends of self-locking spring 103 are placed in rectangular slot 102, leading screw 106 with
There is friction between self-locking spring 103, but still relative can slide between them；There are screw thread 107, screw thread 107 in the front end of leading screw 106
Coordinate with hex nut 108；Hex nut 108 is connected by screw 110 with cavity boss 212.There is pin the front end of leading screw 106
109, pin 109 prevents from departing from sleeve in the inside of cavity boss 212.
With reference to accompanying drawing 2 and 3,4,5 and 9, flow regulator 2 includes regulate transmission device and valve element.Regulate transmission device
Including handle 217, key 216, bevel gear 218, bevel gear wheel 202, sealing ring 203, slide block 204 and the first spring 205.
Handle 217 is connected with the axle of bevel gear 218 by key 216；Bevel gear 218 and bevel gear wheel 202 are meshed；Auger
The bottom of gear 202 and lower box 306 is sealed with sealing ring 203；Bevel gear wheel 202 by rectangular coil guide rail 201 with
Slide block 204 is connected；The radian of slide block 204 is 60 °, and slide block 204 is connected with the first spring 205, is provided with the upper surface of slide block 204
Rectangular channel 219, is provided with the first spring eye 206 in rectangular channel 219；Slide block 204 is connected with cavity 209 by the first spring 205
Connect.
With reference to accompanying drawing 5, valve element is by telescopic block 214, cavity 209, cover plate 210,213 groups of parameter identical second spring
Into telescopic block 214, cavity 209, cover plate 210, second spring 213 match somebody with somebody the assembly of 120 ° of synthesis, so valve element is by three phases
Same assembly is mutually embedded in composition；Telescopic block 214 is circular arc, and there are three cavity boss 212 side by side end, for installing
Second spring 213, cavity 209 are 60 ° of circular arcs, have the groove for putting cover plate 210, cover plate 210 and 209 shell screw of cavity above
211 are connected, and the square block 207 for having projection below, raised square block 207 have respectively along the surface in cavity diameter direction
Cylinder boss 215, for connecting with the first spring 205.The circle that the section of described valve element import can change for area, cavity
209 are built-in with performance parameter identical second spring 213.
Casing 3, including upper end cover 302, lower box 306, sealing gasket 303 and bolt 301.Upper end cover 302 and lower box 306
It is attached by bolt 301, is sealing gasket 303 between upper end cover 302 and lower box 306, it is between casing and upper end cover
Effect be to prevent fluid leakage.Upper end cover 302 is provided with fluid intake 305；There is fluid issuing 307 below casing.
The course of work：
Setting flow：When fluid enters fashionable from entrance 305, through valve element, by swinging handle 217 with dynamic bevel gear 218
Rotate, bevel gear 218 drives the bevel gear wheel 202 in casing to rotate；Due to having rectangular coil in the upper surface of bevel gear wheel 202
Guide rail 201, slide block 204 and the cooperation of rectangular coil guide rail 201, carry out transmission campaign, and slide block is provided with rectangle in the middle of 204 upper surface
Groove 219, is provided with the first spring eye 206 along center of circle direction side in rectangular channel 219；When bevel gear wheel 202 is rotated, by rectangle
Helical guideway 201 drives three slide blocks 204 simultaneously, and rotary motion is changed into moving radially for slide block 204.
Be provided with the middle of 204 upper surface of slide block in rectangular channel 219,219 groove of rectangular channel the first bullet is provided with along center of circle direction side
Spring hole 206；The square block 207 of the first spring 205, the first spring 205 and valve element bottom is placed with inside first spring eye 206
It is connected.Valve element includes the assembly of three same sections, wherein have two with feedback regulation device 1, respectively by nut 108
106) it is connected with leading screw；Assembly be include the cavity 209 of circular arc, the cover plate 210 of second spring 213, circular arc and with circle
The telescopic block 214 that arc cavity is engaged, cover plate 210 are sealed against by screw 211.Such three parts assembly head and the tail phase
It is mutually embedded to constitute valve element, when the slide block 204 being engaged with 202 guide rail of bevel gear wheel is moved radially, the first bullet in slide block 204
Spring 205 deforms；As stress needs balance, so driving three valve elements in the presence of the first spring 205 respectively radially
Motion；The radial motion of valve element can make telescopic block 214 in its cavity internally in the presence of second spring 213 along the circumferential direction
Occur to stretch, so as to three mutually embedded identical circular arc assemblys along the circumferential direction stretch, and then change valve element
The size of aperture area.According to setting flow, the choke area for determining is obtained.
It is flow-compensated：When the Flow-rate adjustment of fluid is to a setting value, if Fluid pressure or temperature change, stream
Body flow needs compensation；Installed in the pressure and temperature of the pressure sensor or temperature sensor monitors fluid of fluid intake 305
Degree, if pressure and temperature changes, corresponding signal passes to microcontrol processor, and microcontrol processor is implemented through calculating
Temperature and pressure compensation, this signal drive feedback regulation device 1 by transmission device, adjust throttling spool open area, after drawing compensation
Valve core opening size；Transmission device drives driver 101, has self-locking spring 103 in the rectangular slot 102 of driver 101,
In rectangular slot 102, the outer wall of self-locking spring 103 and leading screw 106 has slight friction, silk at the two ends of self-locking spring 103
Thick stick 106 passes through self-locking spring 103, driver 101, and coaxially, the front end of leading screw 106 has screw thread 107 to match somebody with somebody with hex nut 108
Close；When driver 101 does not turn, although self-locking spring 103 has friction with leading screw 106, relative slip, leading screw 106 can occur
Can move back and forth along valve core diameter direction.Driver 101 turns left, and acts on one end of self-locking spring 103, outside self-locking spring 103
Footpath reduces, and blocks leading screw 106, drives leading screw 106 to turn left；Driver 101 is turned right, and acts on the other end of self-locking spring 103, from
Lock 103 reduced diameter of spring, blocks leading screw 106, drives leading screw 106 to turn right.
Leading screw 106 is connected with valve element by screw 110, hex nut 108, pin 109.Leading screw 106 rotates, and leads to
Nut 108 is crossed, leading screw 106 is changed into into moving radially for nut 108.Nut 108 is by pin 109 with movable valve plug
One assembly is moved radially so as to which the telescopic block 214 in cavity is internally along the circumferential direction sent out in the presence of second spring 213
Raw flexible, so as to three mutually embedded identical circular arc assemblys along the circumferential direction stretch, and then adjustment valve element is opened
The size of open area, realizes compensation.
When setting flow, regulate transmission device drive valve element, when changing choke area, driver 101 is not rotated.Leading screw
There is gap between 106 and self-locking spring 103, coefficient of friction very little relative can be slided between them.At this moment, assembly can be with
Drive hex nut 108 and leading screw 106 to move radially, do not affected by self-locking spring 103.
When flow-compensated, setting flow it has been determined that regulate transmission device is in fixed position, valve element it is determined that opening,
At this moment flow-compensated, driver 101 is rotated, and self-locking spring 103 pins leading screw 106 and rotates with driver 101, by six
Angle nut 108 drives assembly to move radially.Assembly be by the first spring 205 and 204 elastic connection of slide block, can be relative
Slide block 204 is moved, and so as to change choke area, realizes compensation.
The embodiment be the present invention preferred embodiment, but the present invention is not limited to above-mentioned embodiment, not
In the case of the flesh and blood of the present invention, any conspicuously improved, replacement that those skilled in the art can make
Or modification belongs to protection scope of the present invention.
Claims (6)
1. a kind of two-phase fluid big flow precise control device, it is characterised in that including feedback regulation device (1), Flow-rate adjustment
Device (2) and casing (3)；The flow regulator (2) is internal installed in casing (3)；The feedback regulation device (1) passes through
Leading screw (106) is connected with flow regulator (2)；
The flow regulator (2) is including regulate transmission device and valve element；
The regulate transmission device includes handle (217), bevel gear (218), bevel gear wheel (202), slide block (204) and the first bullet
Spring (205)；The handle (217) is connected with bevel gear (218) axle by key (216)；Bevel gear (218) axle is arranged on case
On body (3), the bevel gear (218) is meshed with bevel gear wheel (202)；It is internal that the bevel gear wheel (202) is placed in casing (3)
On bottom surface, and it is connected by sealing gasket (203)；Rectangular coil guide rail is offered on bevel gear wheel (202) upper surface
(201)；The rectangular coil guide rail (201) is coordinated with slide block (204) bottom face；Offer on slide block (204) upper surface
Rectangular channel (219)；
The valve element includes telescopic block (214), cavity (209) and second spring (213)；The telescopic block (214) is circular arc；
Several cylinder boss (208) are provided with the vertical end face of the telescopic block (214)；It is mounted on the cylinder boss (208)
Second spring (213)；The second spring (213) is placed in the groove that cavity (209) is opened up；Cavity (209) lower end is arranged
There is the square block (207) of projection；Cylinder boss (215) is provided with the left and right sides of the square block (207)；It is described
In the rectangular channel that cylinder boss (215) is opened up on slide block (204)；First spring (205) is installed in cylinder boss
(215) on and in the rectangular channel (219)；It is equipped with cavity (209) lateral wall and is equipped with cavity boss (212)；
The feedback regulation device (1) includes driver (101) and leading screw (106)；The driver (101) is cylindrical shape；Institute
State and on driver (101) inwall, offer rectangular slot (102)；Self-locking spring is installed in the rectangular slot (102)
(103)；The leading screw (106) is through self-locking spring (103) and extends driver (101)；Extend on the leading screw (106)
Driver (101) end offers screw thread (107)；The screw thread (107) is connected with hex nut (108) screw thread；The hexagonal
Nut (108) is connected with the cavity boss (212) in flow regulator (2) by screw (110).
2. two-phase fluid big flow precise control device according to claim 1, it is characterised in that the telescopic block
(214), cavity (209) and second spring (213) constitute 120 ° of arc structure.
3. two-phase fluid big flow precise control device according to claim 1, it is characterised in that the cavity (209)
On be provided with cover plate (210).
4. the two-phase fluid big flow precise control device according to any one of claims 1 to 3, it is characterised in that described
Casing (3) includes upper end cover (302), lower box (306), sealing gasket (303) and bolt (301)；The upper end cover (302) and under
Casing (306) is attached by bolt (301), is provided with sealing gasket between the upper end cover (302) and lower box (306)
(303)。
5. two-phase fluid big flow precise control device according to claim 1, it is characterised in that the rectangular slot
(102) length is the 1/3 of driver (101) length；The two ends of the self-locking spring (103) are stuck in rectangular slot (102).
6. two-phase fluid big flow precise control device according to claim 1, it is characterised in that the self-locking spring
(103) it is sealed in driver (101) by driver end cap (104).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610998014.6A CN106523726B (en) | 2016-11-14 | 2016-11-14 | A kind of two-phase fluid big flow precise control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610998014.6A CN106523726B (en) | 2016-11-14 | 2016-11-14 | A kind of two-phase fluid big flow precise control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106523726A true CN106523726A (en) | 2017-03-22 |
| CN106523726B CN106523726B (en) | 2018-08-21 |
Family
ID=58351490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610998014.6A Active CN106523726B (en) | 2016-11-14 | 2016-11-14 | A kind of two-phase fluid big flow precise control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106523726B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240480A (en) * | 2017-12-07 | 2018-07-03 | 四川苏克流体控制设备有限公司 | Hydraulic turbine adjustable vacuum destructive valve |
| CN108663311A (en) * | 2018-08-24 | 2018-10-16 | 青岛科技大学 | Online supersonic detection device and method based on waste plastic thermo-oxidative ageing degree |
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| US3856042A (en) * | 1973-06-21 | 1974-12-24 | Nasa | Combined pressure regulator and shutoff valve |
| US4090962A (en) * | 1976-10-12 | 1978-05-23 | Braukmann Armaturen A.G. | Reverse flushing filter device |
| CN102814127A (en) * | 2012-08-30 | 2012-12-12 | 江苏微浪电子科技有限公司 | Fluid proportioning and mixing device |
| CN203585477U (en) * | 2013-08-13 | 2014-05-07 | 浙江盾安阀门有限公司 | Axial flow type flow control valve with double filtering function |
| CN104101099A (en) * | 2013-04-15 | 2014-10-15 | 陈山石 | Throttling method for water flow heating device |
| CN206738608U (en) * | 2016-11-14 | 2017-12-12 | 江苏大学 | A kind of two-phase fluid big flow precise control device |
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2016
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3856042A (en) * | 1973-06-21 | 1974-12-24 | Nasa | Combined pressure regulator and shutoff valve |
| US3853145A (en) * | 1973-08-07 | 1974-12-10 | Hammon D | Pressure change actuated sequencing valve |
| US4090962A (en) * | 1976-10-12 | 1978-05-23 | Braukmann Armaturen A.G. | Reverse flushing filter device |
| CN102814127A (en) * | 2012-08-30 | 2012-12-12 | 江苏微浪电子科技有限公司 | Fluid proportioning and mixing device |
| CN104101099A (en) * | 2013-04-15 | 2014-10-15 | 陈山石 | Throttling method for water flow heating device |
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| CN206738608U (en) * | 2016-11-14 | 2017-12-12 | 江苏大学 | A kind of two-phase fluid big flow precise control device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240480A (en) * | 2017-12-07 | 2018-07-03 | 四川苏克流体控制设备有限公司 | Hydraulic turbine adjustable vacuum destructive valve |
| CN108663311A (en) * | 2018-08-24 | 2018-10-16 | 青岛科技大学 | Online supersonic detection device and method based on waste plastic thermo-oxidative ageing degree |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106523726B (en) | 2018-08-21 |
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