CN204298153U - A kind of for the outer cold water apparatus for eliminating sludge of DC converter valve cooling system - Google Patents
A kind of for the outer cold water apparatus for eliminating sludge of DC converter valve cooling system Download PDFInfo
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- CN204298153U CN204298153U CN201420760275.0U CN201420760275U CN204298153U CN 204298153 U CN204298153 U CN 204298153U CN 201420760275 U CN201420760275 U CN 201420760275U CN 204298153 U CN204298153 U CN 204298153U
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- electrode
- scale removal
- groove
- converter valve
- ultrasonic generator
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 238000001816 cooling Methods 0.000 title claims abstract description 30
- 239000010802 sludge Substances 0.000 title claims abstract description 12
- 239000002893 slag Substances 0.000 claims abstract description 17
- 239000007921 spray Substances 0.000 claims abstract description 16
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910000619 316 stainless steel Inorganic materials 0.000 claims description 3
- DPGAAOUOSQHIJH-UHFFFAOYSA-N ruthenium titanium Chemical compound [Ti].[Ru] DPGAAOUOSQHIJH-UHFFFAOYSA-N 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 9
- 150000002500 ions Chemical class 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 239000011575 calcium Substances 0.000 abstract description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract description 2
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052791 calcium Inorganic materials 0.000 abstract description 2
- 229910001425 magnesium ion Inorganic materials 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 5
- 229960005419 nitrogen Drugs 0.000 description 5
- 238000007872 degassing Methods 0.000 description 4
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 230000003020 moisturizing effect Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 239000000306 component Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000008358 core component Substances 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910019440 Mg(OH) Inorganic materials 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 210000005056 cell body Anatomy 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Landscapes
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The utility model relates to a kind of for the outer cold water apparatus for eliminating sludge of DC converter valve cooling system, and device comprises scale removal groove, direct supply, electrode, ultrasonic generator and dirty slag and gathers groove; The negative pole of the negative electrode of electrode and anode and direct supply and positive pole is corresponding is connected; And electrode is fixedly mounted in described scale removal groove; Ultrasonic generator is arranged on scale removal groove; Described dirty slag gathers groove and is arranged on scale removal trench bottom, and scale removal trench bottom is open type.Electrode and scale removal groove are fixedly mounted, and low voltage is applied to electrode; Calcium, the magnesium ion of spray water produce dirt at the negative electrode generation chemical reaction of electrode; Electrode is applied to the vibration of certain frequency, the vibrational frequency of himself is adjusted to the vibrational frequency identical with dirt adhesive electrodes by ultrasonic generator, causes dirt to drop to dirty slag and gathers in groove.The apparatus for eliminating sludge provided by the utility model and method thereof, can be removed causing in spray water incrustation ion, solves the cooling tower scale problems in current conversion station.
Description
Technical field
The utility model relates to a kind of device of DC transmission system, specifically relates to a kind of for the outer cold water apparatus for eliminating sludge of DC converter valve cooling system.
Background technology
Converter valve is the nucleus equipment of DC transmission engineering, and by successively three-phase alternating voltage being connected to the volts DS that DC terminal obtains expecting and the control realized power, its value accounts for 22 ~ 25% of current conversion station suite of equipment total price.
The state-of-the-art technology of the design ap-plication of converter valve Power Electronic Technique, light-operated switch technology, pressure technique, control techniques and technology of pressure equalization, cooling technology, high pressure insulating material and achievement in research, main technological difficulties are: the foundation of converter valve Transient simulation model; The research of the bulk shielding of converter valve noble potential and shielding properties; The control of converter valve Insulation Coordination, local discharging level and suppression technology; Developing of converter valve Primary Component; Converter valve cooling, photoelectric conversion technique, control and technology of pressure equalization integrated; The research of converter valve type approval test method.
Converter valve is made up of component such as thyristor, damping capacitor, equalizing capacitance, damping resistance, equalizing resistance, transductor, thyristor control units.Wherein, thyristor is the core component of converter valve, which determine the through-current capability (domestic at present developed 6 inch thyristors, specified through-current capability 4000 amperes) of converter valve, by the system voltage that multiple Thyristor series connection can be obtained wishing.The triggering mode of thyristor is divided into electricity to trigger and light triggers, and ABB and siemens, Areva Ta are representative wherein respectively.
The water-filled radiator needed for core component thyristor of converter valve, should dispel the heat to thyristor, serve as structural part pressure-bearing again, also need conduction, with lifelong quality guarantee, its strict specification of quality makes this water-filled radiator become the top product of water-filled radiator in power electronics industry.
In converter valve field, monitoring project at present for direct current transmission converter valve cooling system water quality mainly comprises: specific conductivity, pH (only having small part current conversion station to monitor), dissolved oxygen, temperature, these data targets are less, and be periodic detection, cause current many domestic current conversion stations all to occur the problem of cooling tower coil pipe fouling.The fouling of cooling tower coil pipe will reduce the heat exchange efficiency of cooling tower greatly, causes inner cold water temperature drift, if the allowance of cooling tower is not enough, very easily causes valve body temperature too high and trips, causing serious consequence.
At water treatment field, occurred small-sized electrochemical descaling instrument, but mainly adopt tubular type structure, and scale removal amount is less, cleaning is inconvenient, is difficult to the outer cold water scale removal being applied to the larger converter valve cooling system of the water yield.
Utility model content
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of for the outer cold water apparatus for eliminating sludge of DC converter valve cooling system, and the device that the utility model provides is installed simple, easy and simple to handle; Descale effect is obvious; Environmentally friendly, pollution-free, dirty slag can be used for material of construction; Little power consumption, scale removal efficiency is high, solves the cooling tower scale problems in current conversion station.
The purpose of this utility model adopts following technical proposals to realize:
The utility model provides a kind of and it is characterized in that for the outer cold water apparatus for eliminating sludge of DC converter valve cooling system, and described device comprises scale removal groove, direct supply, electrode, ultrasonic generator and dirty slag and gathers groove; The negative pole of the negative electrode of described electrode and anode and direct supply and positive pole is corresponding is connected; And electrode is fixedly mounted in described scale removal groove; Described ultrasonic generator is arranged on scale removal groove; Described dirty slag gathers groove and is arranged on scale removal trench bottom, and described scale removal trench bottom is open type.
Further, described electrode is plate type electrode, and for generation of equifrequent plate electrode bundle, its anode adopts titanium ruthenium electrode, and negative electrode adopts 316 stainless steel plates.
Further, the voltage of described direct supply is 6 ~ 12V, and electric current adjusts according to scale removal scene; Described scale removal groove and dirty slag gather groove and all adopt stainless steel.
Further, described ultrasonic generator comprises ultrasonic power and transverter; Ultrasonic power is connected with transverter by cable.
Further, be connected by the water-in of described device with spray pump water outlet, its water outlet introduces spray pond, forms the device of circulating descaling.
Compared with the prior art, the beneficial effect that the utility model reaches is:
The device that the utility model provides is board-like at the electrode of design, be fixed in special scale removal groove, form equifrequent electrode bundle, not only can increase dirt and separate out quantity, increase descaling rate, and can ultrasonic generator be passed through, vibrational frequency is adjusted to the vibrational frequency identical with dirt adhesive electrodes, makes it produce resonance, thus split away off by electrode, drop down onto dirty slag and gather unified process in groove, greatly reduce cleaning cost.
Water-in can be caused spray pump water outlet by the device that the utility model provides, and water outlet directly introduces spray pond, passes through circulating descaling, reduce the hardness ions in spray water gradually, thus improve the concentration rate of spray water to a certain extent, reducing abandoned water amount, saving water resource.
The utility model solves the cooling tower scale problems in current conversion station.
Device of the present utility model is installed simple, easy and simple to handle; Descale effect is obvious; Environmentally friendly, pollution-free, dirty slag can be used for material of construction; Little power consumption, scale removal efficiency is high.
Accompanying drawing explanation
Fig. 1 is the structural representation for the outer cold water apparatus for eliminating sludge of DC converter valve cooling system that the utility model provides.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
Direct current transmission converter valve cooling system, comprises major cycle water pump, heating tank, air radiator, main strainer, converter valve and degassing vessel; Described major cycle exit of pump, heating tank, air radiator, main strainer, converter valve, degassing vessel and major cycle unit fixed on water pump suction to be connected in turn formation circulation loop by pipeline.
Described direct current transmission converter valve cooling system comprises water treatment loop, described water treatment loop comprises ion-exchanger and accurate filter, described water treatment loop is in parallel with converter valve, and described ion-exchanger is connected with accurate filter, and described ion-exchanger and accurate filter are equipped with for subsequent use.
Described direct current transmission converter valve cooling system comprises nitrogen stabilization pressure system, and described nitrogen stabilization pressure system comprises expansion drum and nitrogengas cylinder, and expansion drum is connected with accurate filter, and nitrogengas cylinder expansion drum connects, and described expansion drum is two series connection, and nitrogengas cylinder is provided with for subsequent use.Direct current transmission converter valve cooling system comprises automatic water replenishing system, described automatic water replenishing system comprises the raw water pump, moisturizing strainer, former water pot, small pump and the moisturizing motorized valve that connect successively, moisturizing motorized valve is connected with ion-exchanger, and described small pump is provided with for subsequent use.Heating tank comprises at least one electric heater.Degassing vessel comprises at least one electric heater.
Direct current transmission converter valve cooling system comprises electric T-shaped valve, butterfly valve and ball valve, electric T-shaped valve is in parallel in ball valve after connecting with butterfly valve, be connected between heating tank and major cycle water pump, electric T-shaped valve the 3rd end is connected with main filter inlet, and described butterfly valve and electric T-shaped valve are equipped with for subsequent use.
Major cycle water pump, heating tank and main strainer are equipped with for subsequent use.Converter valve and degassing vessel are provided with fragrant road.Water treatment loop and conductivity measurement branch circuit parallel connection.
The structural representation for the outer cold water apparatus for eliminating sludge of DC converter valve cooling system that the utility model provides as shown in Figure 1, this device is parallel on external condensation system main circulation loop, and this device comprises scale removal groove, direct supply, electrode, ultrasonic generator and dirty slag and gathers groove; The negative pole of the negative electrode of described electrode and anode and direct supply and positive pole is corresponding is connected; And electrode is fixedly mounted in described scale removal groove; Described ultrasonic generator is arranged on scale removal groove; Described dirty slag gathers groove and is arranged on scale removal trench bottom, and described scale removal trench bottom is open type.
Direct supply: voltage 6 ~ 12V, electric current can need to adjust according to scene.
Scale removal groove: adopt stainless steel to make, and can fixed electorde.
Electrode is plate type electrode, and for generation of equifrequent plate electrode bundle, its anode adopts titanium ruthenium electrode, and negative electrode adopts 316 stainless steel plates.Described electrode select area with as shown in the formula 1) represent:
In formula: c
0, c is respectively into water and water outlet hardness value, and V is current volume, and A is electrode cathode area, and t is the reaction times, and k is reaction rate constant;
The consumed power of electric energy is with as shown in the formula 2) represent:
In formula: P is consumed power, I
zfor electric current, k is reaction rate constant, and A is electrode cathode area, and d is interelectrode distance.
Ultrasonic generator: can be arranged on scale removal groove, causes cell body and electrode vibration, drives incrustation scale to resonate, thus comes off by electrode.
Dirt slag gathers groove: scale removal trench bottom can be set to open type, and be convenient to dirty slag and gather groove dismounting, this groove is also stainless steel.
The dirt generating rate of the outer cold water of converter valve cooling system is with as shown in the formula 3) represent:
In formula: m is slope, test determination value is (7.50 ± 0.03) mAmin/cm
3; K (I → ∞) for current density I level off to infinity time reaction rate constant, its value is (0.357 ± 0.005) cm/min; I is current density
In formula: m is slope, test determination value is about (7.50 ± 0.03) mAmin/cm
3, k (I → ∞) for current density I level off to infinity time reaction rate constant, it is current density that the value obtained by extrapotation is about (0.357 ± 0.005) cm/min, I.
Water-in can be caused spray pump water outlet by the device that the utility model provides, and water outlet directly introduces spray pond, passes through circulating descaling, reduce the hardness ions in spray water gradually, thus improve the concentration rate of spray water to a certain extent, reducing abandoned water amount, saving water resource.
The utility model also provides a kind of descaling method for the outer cold water apparatus for eliminating sludge of DC converter valve cooling system, and described method comprises the steps:
(1) in scale removal groove, place 2 groups of electrodes in fixed installation, one group is negative electrode, and one group is anode, applies the low voltage of 6 ~ 12V
(2) calcium of spray water, magnesium ion produce dirt at the negative electrode generation chemical reaction of electrode; There is following reaction in negative electrode:
2H
2O+2e→H
2+2OH
-
Like this, the pH value near negative electrode will raise, and then reacts:
HCO
3 -+OH-→CO
3 2-+H2O
Mg
2++OH
-→Mg(OH)
2↓
Ca
2++CO
3 2-→CaCO
3↓
Just dirt deposition is had at cathode surface.
(3) first electrode is applied to the vibration of 15KHz reference frequency by ultrasonic generator, then ultrasonic generator vibrational frequency is adjusted to the vibrational frequency identical with dirt adhesive electrodes, cause dirt to drop to dirty slag after producing resonance to gather in groove, regularly dirt is cleared up.
The utility model provide for the outer cold water apparatus for eliminating sludge of DC converter valve cooling system and descaling method thereof, be mainly used in the outer cooling water quality scale removal in direct-current transmission converter station and association area thereof, in order to avoid there is the problem because fouling causes cooling tower exchange capability of heat to decline.By this device, can remove causing in spray water incrustation ion, solving the cooling tower scale problems in current conversion station.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; although be described in detail the utility model with reference to above-described embodiment; those of ordinary skill in the field still can modify to embodiment of the present utility model or equivalent replacement; these do not depart from any amendment of the utility model spirit and scope or equivalent replacement, are all applying within the claims of the present utility model awaited the reply.
Claims (5)
1. for the outer cold water apparatus for eliminating sludge of DC converter valve cooling system, it is characterized in that, described device comprises scale removal groove, direct supply, electrode, ultrasonic generator and dirty slag and gathers groove; The negative pole of the negative electrode of described electrode and anode and direct supply and positive pole is corresponding is connected; And electrode is fixedly mounted in described scale removal groove; Described ultrasonic generator is arranged on scale removal groove; Described dirty slag gathers groove and is arranged on scale removal trench bottom, and described scale removal trench bottom is open type.
2. device as claimed in claim 1, it is characterized in that, described electrode is plate type electrode, and for generation of equifrequent plate electrode bundle, its anode adopts titanium ruthenium electrode, and negative electrode adopts 316 stainless steel plates.
3. device as claimed in claim 1, it is characterized in that, the voltage of described direct supply is 6 ~ 12V, and electric current adjusts according to scale removal scene; Described scale removal groove and dirty slag gather groove and all adopt stainless steel.
4. device as claimed in claim 1, it is characterized in that, described ultrasonic generator comprises ultrasonic power and transverter; Ultrasonic power is connected with transverter by cable.
5. device as claimed in claim 1, is characterized in that, be connected by the water-in of described device with spray pump water outlet, and its water outlet introduces spray pond, forms the device of circulating descaling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420760275.0U CN204298153U (en) | 2014-12-04 | 2014-12-04 | A kind of for the outer cold water apparatus for eliminating sludge of DC converter valve cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420760275.0U CN204298153U (en) | 2014-12-04 | 2014-12-04 | A kind of for the outer cold water apparatus for eliminating sludge of DC converter valve cooling system |
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| Publication Number | Publication Date |
|---|---|
| CN204298153U true CN204298153U (en) | 2015-04-29 |
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| CN201420760275.0U Active CN204298153U (en) | 2014-12-04 | 2014-12-04 | A kind of for the outer cold water apparatus for eliminating sludge of DC converter valve cooling system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105540955A (en) * | 2016-01-13 | 2016-05-04 | 烟台和盛康洁环保科技有限公司 | Electrochemical descaling device |
| CN105712500A (en) * | 2014-12-04 | 2016-06-29 | 国家电网公司 | External cold water descaling device for direct-current converter valve cooling system and method |
-
2014
- 2014-12-04 CN CN201420760275.0U patent/CN204298153U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105712500A (en) * | 2014-12-04 | 2016-06-29 | 国家电网公司 | External cold water descaling device for direct-current converter valve cooling system and method |
| CN105712500B (en) * | 2014-12-04 | 2019-07-12 | 国家电网公司 | One kind is for the outer cold water apparatus for eliminating sludge of DC converter valve cooling system and its method |
| CN105540955A (en) * | 2016-01-13 | 2016-05-04 | 烟台和盛康洁环保科技有限公司 | Electrochemical descaling device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170525 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee after: China-EPRI Electric Power Engineering Co., Ltd. Patentee after: State Grid Corporation of China Co-patentee after: State Grid Zhejiang Electric Power Company Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee before: State Grid Smart Grid Institute Patentee before: State Grid Corporation of China Co-patentee before: China-EPRI Electric Power Engineering Co., Ltd. Co-patentee before: State Grid Zhejiang Electric Power Company |
|
| TR01 | Transfer of patent right |