CN206740413U - A kind of simulation experiment system of HVDC-valve inner cold system - Google Patents
A kind of simulation experiment system of HVDC-valve inner cold system Download PDFInfo
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- CN206740413U CN206740413U CN201720602997.7U CN201720602997U CN206740413U CN 206740413 U CN206740413 U CN 206740413U CN 201720602997 U CN201720602997 U CN 201720602997U CN 206740413 U CN206740413 U CN 206740413U
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Abstract
A kind of simulation experiment system of HVDC-valve inner cold system, it includes filtering module, detection means and loop module；Loop module includes ion-exchanger, main circulation pump, heating water tank, aluminium radiator, expansion tank and refrigerator, main circulation pump delivery outlet after pipeline successively heated water tank, aluminium radiator, expansion tank with refrigerator entrance by being connected, refrigerator outlet is connected so as to form main circulation loop by pipeline with main circulation pump input port, pipeline communication of the ion-exchanger outlet through outlet pipe and between refrigerator outlet and main circulation pump input port, outlet pipe are provided with water intaking valve；Detection means is arranged between aluminium radiator and expansion tank on pipeline；Filtering module outlet is connected with ion-exchanger entrance.The utility model can be used for carrying out experimental study to HVDC-valve inner cold system, and the corrosion of valve inner cold system aluminium radiator and screening electrodes fouling present situation are tested.
Description
Technical field
It the utility model is related to electric power project engineering field, and in particular to a kind of simulation examination of HVDC-valve inner cold system
Check system.
Background technology
D.C. high voltage transmission (HVDC) turns into resource with its features such as corridor is narrow, power transmission efficiency is high, power attenuation is small of transmitting electricity
Distribute rationally and transfer electricity from the west to the east the first choice of strategy implementation, effectively alleviate China's energy resources skewness and power load not
Balanced contradiction, is developed rapidly at home.Wherein, converter valve is the nucleus equipment of HVDC transmission system, in fact
The conversion of existing alterating and direct current.IGCT is the basic Component units of transverter, in normal commutation process, can produce substantial amounts of heat
Amount, and with the development of HVDC transmission system, the lifting of transmission capacity, heat caused by IGCT is bigger, and this just needs
The accessory system valve cooling system (Aluminium Radiator) of converter valve maintains its temperature in the reasonable scope, to ensure converter valve just
Often work.But in actual production, aluminium radiator can occur corrosion with the dissolved oxygen generation interaction in water and water and sink
Accumulate and form incrustation scale, after the cold water- cooling generator operation some cycles of valve, incrustation scale caused by corrosion will be accumulated, and obstruction cooling water returns
Road causes element radiating not smooth, influences the normal operation of high-voltage direct current, locking is even resulted in when serious, produces huge warp
Ji loss and social influence.It can be seen that the corrosion of Aluminium Radiator is fatal in HVDC transmission system, if can not solve
The certainly etching problem of aluminium radiator, the normal operation of HVDC transmission system cannot ensure.Therefore, aluminium radiator
Corrosion and scale problems, have become the factor for the safe and stable operation for influenceing whole HVDC transmission system, it need to be opened
Exhibition research.
One of corrosion and scaling problem, its main forms for water- cooling generator is exactly the fouling of screening electrodes.Knot
Dirt causes contact resistance between screening electrodes and inner cold water to increase and produce voltage drop, and then weakens the effect of equilibrium potential.Separately
Outside, the foulant of electrode surface sheds into water pipe, cause water pipe narrow in addition block screen pack, and then influence water-carrying capacity and
The radiating effect of IGCT, turn into one of main destabilizing factor for influenceing HVDC transmission system operation.
The generation of above-mentioned screening electrodes problem, the active demand of having researched and proposed to screening electrodes fouling, in recent years, surpass
High voltage power transmission company corrodes for converter valve water- cooling generator, has carried out many research work.Solve some problems, such as reduce
The amount of foulant in water pipe, but still suffer from the danger of blocking, during maintenance the foulant of screening electrodes be still layer go out it is infinite.Research
It is conceived to the control and management for strengthening valve cooling system mostly, no small production improvement effect has been obtained, in combination with direct current transportation
The screening electrodes scale removal work carried out during engineering interruption maintenance, substantially avoid due to the hair of production accident caused by fouling
It is raw, but the situation of fouling does not solve thoroughly yet.It can be seen that we do not understand the machine of valve tower water- cooling generator electrochemical corrosion
Reason, so also just not catching material corrosion and then " ox muzzle " of fouling.As thoroughly solved the corrosion of valve tower water- cooling generator
Problem, it is necessary to further investigate the underlying issue of its corrosion, suppress the generation of corrosion from its basic point.
Utility model content
The utility model purpose is to provide a kind of simulation experiment system of HVDC-valve inner cold system, available for height
Press straight-wavy valve inner cold system to carry out experimental study, and can to inner cold water electrical conductivity, pH value, carbon dioxide and oxygen concentration, flow,
Research is analyzed in the influence factors such as pressure, temperature, fin material.
To achieve the above object, the technical solution adopted in the utility model is as follows：
A kind of simulation experiment system of HVDC-valve inner cold system, it includes filtering module, detection means and cyclic module
Block；
Loop module includes ion-exchanger, main circulation pump, heating water tank, aluminium radiator, expansion tank and refrigerator,
Main circulation pump delivery outlet is freezed by being connected after pipeline successively heated water tank, aluminium radiator, expansion tank with refrigerator entrance
Machine outlet is connected by pipeline with main circulation pump input port so as to form main circulation loop, ion-exchanger export through outlet pipe and
Pipeline communication between refrigerator outlet and main circulation pump input port, outlet pipe are provided with water intaking valve；Detection means is set
On pipeline and for detecting dissolved oxygen concentration, ion concentration, electrical conductivity and PH in water between aluminium radiator and expansion tank
Value；Filtering module outlet is connected with ion-exchanger entrance.
The filtering module includes：Pretreatment filters, first-stage reverse osmosis device, second level reverse osmosis apparatus, EDI desalinations dress
Put and pure water tank, the pretreatment filters outlet by pipeline successively through first-stage reverse osmosis device, second level reverse osmosis apparatus,
It is connected after EDI demineralizers and pure water tank with ion-exchanger entrance.
Further, the ion-exchanger is cation and anion exchange device.
As a kind of improvement of the present utility model, the simulation experiment system includes water replanishing device, and water replanishing device includes mending
Water tank and small pump, water supply tank outlet are connected with moisturizing pump intake, and moisturizing pump discharge is connected with pure water tank inlet, moisturizing pump discharge
Refrigerator and EDI demineralizers are connected between pure water tank inlet, water valve is provided between moisturizing pump discharge and pure water tank inlet.
Further, the detection means includes dissolved oxygen sensor, ion concentration measurement instrument, conductance instrument and PH
It is worth measuring instrument.
As a kind of improvement of the present utility model, the main circulation loop is provided with automatic exhaust steam valve.
As a kind of improvement of the present utility model, the main circulation loop is provided with CO2And O2Adjustment module, CO2And O2Adjust
Section module includes CO2Storage tank and O2Storage tank, CO2Storage tank and O2The outlet of storage tank connects through valve with main circulation loop respectively.
As a kind of improvement of the present utility model, the expansion tank is provided with nitrogen pot, and the outlet of nitrogen pot is through electromagnetism
Valve is connected with expansion tank, and safety valve is provided with the top of expansion tank.
The aluminium radiator is two groups of aluminium radiators, and every group of aluminium radiator includes several aluminium radiators, one of which
The surface of aluminium radiator is coated with corrosion resistant material.
Pressure gauge is provided between the ion-exchanger and main circulation pump, is provided between the main circulation pump and heating water tank
Water thermometer, flowmeter is provided between the heating water tank and aluminium radiator.
Compared with prior art, the utility model has advantages below：
The utility model can be used for carrying out experimental study to HVDC-valve inner cold system, to valve inner cold system aluminium radiator
Corrosion and screening electrodes fouling present situation are tested；On the other hand can be from inner cold water electrical conductivity, pH value, carbon dioxide and oxygen
The influence of concentration, flow, pressure, temperature, fin material etc. for fin corrosion and screening electrodes fouling is done qualitative
Quantitative analysis, according to result of the test, transformation and optimization can be carried out to valve inner cold system, and the corruption of valve inner cold system can be proposed accordingly
Scale problems renovation scheme is lost, fundamentally solves DC engineering valve inner cold system radiator and screening electrodes sealing ring burn into
Screening electrodes scale problems, valve cooling system operational reliability is greatly improved, reduce the locking risk caused by scale problems, improved
The security and stability of power network.
Brief description of the drawings
Fig. 1 is schematic diagram of the present utility model；
Circuit connection diagram when Fig. 2 is the utility model simulated test；
The schematic diagram that aluminium radiator is connected in series when Fig. 3 is the utility model simulated test；
The schematic diagram that aluminium radiator is connected in parallel when Fig. 4 is the utility model simulated test.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.It is it is understood that described herein
Specific embodiment be used only for explaining the utility model, rather than to restriction of the present utility model.It also should be noted that
For the ease of description, the part related to the utility model rather than full content are illustrate only in accompanying drawing.
Embodiment
As shown in figure 1, a kind of simulation experiment system of HVDC-valve inner cold system, it includes filtering module 20, detection
Device 30 and loop module 10.
Loop module 10 includes ion-exchanger 16, main circulation pump 11, heating water tank 12, aluminium radiator 13, expansion tank
14 and refrigerator 15, the delivery outlet of main circulation pump 11 pass through pipeline successively heated water tank 12, aluminium radiator 13, expansion tank
It is connected after 14 with the entrance of refrigerator 15, the outlet of refrigerator 15 is connected by pipeline with the input port of main circulation pump 11 to be followed so as to form master
Loop back path, ion-exchanger 16 export through outlet pipe and export the pipeline between the input port of main circulation pump 11 positioned at refrigerator 15
Connection, outlet pipe are provided with water intaking valve.In order to ensure that experimental provision runs well, main circulation pump 11 is standby each other provided with two,
Under normal circumstances, only a pump operating cycle, two pumps are switched over by cycle regular hour, and main circulation pump 11 is mainly used
In give water- cooling generator provide circulation power.
Detection means 30 is arranged between aluminium radiator 13 and expansion tank 14 on pipeline and for detecting the dissolving in water
Oxygen concentration, ion concentration, electrical conductivity and pH value.Specifically, detection means 30 includes dissolved oxygen sensor, 31 ion concentration measurements
Instrument 32, conductance instrument 33 and pH value measuring instrument 34.
The outlet of filtering module 20 is connected with the entrance of ion-exchanger 16；Wherein, filtering module 20 includes pretreatment filtration
Device 21, first-stage reverse osmosis device 22, second level reverse osmosis apparatus 23, EDI demineralizers 24 and pure water tank 25, it is described pretreated
The outlet of filter 21 is by pipeline successively through first-stage reverse osmosis device 22, second level reverse osmosis apparatus 23, EDI demineralizers 24 and pure water
It is connected after case 25 with the entrance of ion-exchanger 16.When in use, using running water as medium, because running water is not pure water,
Therefore filtering module must be used to carry out filtration treatment, running water filters out impurity after first passing around pretreatment filters, then
The higher water of purity is obtained after first-stage reverse osmosis device and second level reverse osmosis apparatus again, is finally carried out by EDI demineralizers
Ultra-pure water is obtained after processing, ensure that the quality of aqueous medium.Set moreover, pure water tank 25 exports between the entrance of ion-exchanger 16
There is water valve, in order to control cyclic process.
In the present embodiment, the ion-exchanger 16 is cation and anion exchange device, the negative resin of cation and anion exchange device
161 and positive resin 162 be connected successively with conductivity sensor 163, Flow Observation hole 164 and filter 165 respectively after in parallel, use
In the ion exchange for carrying out inner cold water, it is ensured that inner cold water electrical conductivity is in the ratio of reduced levels, wherein negative resin and positive resin
It is adjustable.
As shown in Fig. 2 when carrying out simulated test to HVDC-valve inner cold system using the utility model, aluminium radiator
13 are looped around on the IGCT 200 of converter valve, and the both ends of the water inlet pipe 131 of aluminium radiator 13 and outlet pipe 132 are separately installed with just
Screening electrodes 400 and negative screening electrodes 500, when the quantity of aluminium radiator is multiple, multiple aluminium radiators 13 pass through uniformly electricity
Resistance 300 is connected with each other, then AC220kV dc sources 100 are connected to the negative electrode and anode of IGCT 200, positive screening electrodes
400 and both positive and negative polarity of the negative screening electrodes 500 respectively with AC220kV dc sources 100 be connected.For inner cold water electrical conductivity factor,
General DC converter station inner cold water electrical conductivity control exists in 0.05~0.15 μ S/cm, the control of ion-exchanger water outlet conductivity
0.03~0.11 μ S/cm, the content concn of the ion exchange resin in ion-exchanger is adjusted, the electrical conductivity of inner cold water can be adjusted,
The content concn that ion exchange resin can be set respectively is 1g/L, 5g/L, 10g/L, 15g/L, 20g/L, 25g/L, 30g/L, is ensured
Ceteris paribus, study the situation of aluminium radiator corrosion and screening electrodes fouling under different ions resin concentration.
For temperature factor, it is configured by heating water tank, inner cold water temperature point when entering radiator can be studied
The situation of aluminium radiator corrosion and screening electrodes fouling when Wei not be 40 DEG C, 45 DEG C, 50 DEG C, 55 DEG C.
For flow factor, the flow velocity of inner cold water can be set to adjust the rotating speed of main circulation pump, major cycle can be studied
Revolution speed is respectively aluminium radiator corruption in the case of 1000r/min, 1500r/min, 2000r/min, 2500r/min, 3000r/min
Erosion and the situation of screening electrodes fouling.
In the present embodiment, the main circulation loop is provided with automatic exhaust steam valve 70.Automatic exhaust steam valve main function is certainly
The dynamic gas drained in circulation loop.In addition, pressure gauge 17, main circulation pump are provided between ion-exchanger 16 and main circulation pump 11
Water thermometer 18 is provided between 11 and heating water tank 12, flowmeter 19 is provided between heating water tank 12 and aluminium radiator 13.
In the present embodiment, the expansion tank 14 is provided with nitrogen pot 141, and the outlet of nitrogen pot 141 is through magnetic valve 142
It is connected with expansion tank 14, the top of expansion tank 14 is provided with safety valve.Expansion tank uses sealed expansion tank, and and nitrogen
Gas tank connects, and using the nitrogen stabilization pressure for being not susceptible to chemical reaction, can also realize the effect of interior water-cooling system voltage stabilizing.Expansion tank
The nitrogen of interior constant pressure can maintain the pressure in converter valve water-cooling system with cooling medium in receiving valve cooling system because temperature becomes
Volumetric expansion caused by change.Internal nitrogen pressure 0.3~0.5 atmospheric pressure higher than atmospheric pressure, and pass through control system
Maintain draught head stable, if expansion tank is moved into ground, need the pressure having along with valve tower height, i.e., former expansion
The pressure that water tank has away from ground level.When expand pressure inside the tank be less than certain value when, open source nitrogen export magnetic valve to
Input pressure in expansion drum, maintain expansion pressure inside the tank constant；When expanding pressure inside the tank superelevation, safety valve automatically opens up row
Gas, maintain expansion pressure inside the tank constant.For pressure factor, pressure is adjusted by nitrogen pot, can study its pressure for 5,
5.5th, 6,6.5, during 7bar, the situation of corrosion and the screening electrodes fouling of aluminium radiator.
In one embodiment of the present utility model, the simulation experiment system includes water replanishing device 40, water replanishing device 40
Including water supply tank 42 and small pump 41, the outlet of water supply tank 42 is connected with the entrance of small pump 41, the outlet of small pump 41 and pure water tank 25
Entrance connects, and small pump 41 exports is connected with refrigerator 43 and EDI demineralizers 44, small pump 41 between the entrance of pure water tank 25
Water valve is provided between outlet and the entrance of pure water tank 25；Other small pump 41 exports to be connected also by water valve with main circulation loop.
When inner cold water deficiency is to start small pump when expansion tank water level is less than 30% to carry out moisturizing to water- cooling generator, moisturizing passes through cooling
With enter pure water tank or main circulation loop after desalination.Wherein, small pump 41 has two, standby each other, under normal circumstances, only one
Platform moisturizing pump operation, two pumps are switched over by cycle regular hour, and small pump 41 is mainly used in moisturizing being delivered to main follow
In loop back path or pure water tank.
In one embodiment of the present utility model, the main circulation loop is provided with CO2And O2Adjustment module 50, CO2With
O2Adjustment module 50 includes CO2Storage tank 51 and O2Storage tank 52, CO2Storage tank 51 and O2The outlet of storage tank 52 is respectively through valve and major cycle
Circuit communication.For the concentration of carbon dioxide and oxygen, CO can be passed through2And O2CO in adjustment module2Tank and O2Tank is adjusted
Section, according to principle of electrochemical reaction, oxygen directly participates in galvanic interaction, and aluminium hydroxide is formed with water and reactive aluminum, therefore interior
How much cold water oxygen content directly affects galvanic interaction process, and then influences corrosion rate, and the concentration for setting dissolved oxygen is respectively
1.5mg/L, 2mg/L, 2.5mg/L, 3mg/L, 3.5mg/L, 4mg/L, 4.5mg/L, study the aluminium under different oxygen concentrations and radiate
Device corrodes and the situation of screening electrodes fouling.
Equally, CO is added in inner cold water2The Al (OH) in converter valve coolant can be suppressed3Content, so as to prevent electrode
The generation of fouling.Principle is as follows：H2O+CO2=H2CO3
Al(OH)3+H2CO3=HAlO2+2H2O+CO2
Different CO is equally set2Concentration studies are in different CO2The feelings of aluminium radiator corrosion and screening electrodes fouling under concentration
Condition.But CO is added in inner cold water2Inner cold water slant acidity can be made, aluminium can be accelerated to radiate although screening electrodes fouling can be suppressed
Device corrodes, and optimal concentration can be found out by simulated test.
In one embodiment of the present utility model, the aluminium radiator 13 is two groups of aluminium radiators, every group of aluminium radiator
Include several aluminium radiators 13, the surface of one of which aluminium radiator is coated with corrosion resistant material.For radiator material,
Two groups of aluminium radiators of plated film and non-plated film are provided in embodiment, not only can be to be radiated in the case of contrast experiment's plated film and non-plated film
The corrosion condition of device, different films can also be further plated to aluminium radiator, studies the situation under its different plated film.Such as Fig. 3
Shown in Fig. 4, the Inlet and outlet water mode of several aluminium radiators can be the mode of several aluminium radiator parallel connection Inlet and outlet waters；Also may be used
To be that two groups several aluminium radiators are each connected after Inlet and outlet water, then it is parallel with one another, so as to study it in different water routes
In the case of aluminium radiator corrosion and screening electrodes fouling situation.
The utility model can set electrochemical workstation 60, and electrochemical workstation 60 is used to show that monitoring test device is transported
The process of parameter and Control experiment plant running in row, electrochemical workstation 60 be displayed for dissolved oxygen, ion concentration,
The numerical value such as electrical conductivity, pH value, pressure, flow, temperature and liquid level, at the same can control main circulation pump, small pump, heating water tank,
Cooler, valve and voltage source.Electrochemical workstation 60 intuitively shows dissolved oxygen, ion concentration, the electricity of detecting instrument monitoring
Conductance and pH value, the pressure value of pressure gauge monitoring, the flow value of flowmeter monitoring, the temperature value of thermometer monitoring, expansion tank
Level value.
In summary, the utility model by main circulation pump delivery outlet by pipeline successively heated water tank, aluminium radiator,
It is connected after expansion tank with refrigerator entrance, refrigerator outlet is connected by pipeline with main circulation pump input port to be followed so as to form master
Loop back path, your experimental rig is touched so as to form, the utility model has advantages below compared with prior art：
1st, the utility model can be used for carrying out experimental study to HVDC-valve inner cold system, and valve inner cold system aluminium is radiated
Device corrodes and screening electrodes fouling present situation is tested；
2nd, can be from inner cold water electrical conductivity, pH value, carbon dioxide and oxygen concentration, flow, pressure, temperature, fin material
Qualitative and quantitative analysis is done in influence of the matter etc. for fin corrosion and screening electrodes fouling,；
3rd, according to result of the test, transformation and optimization can be carried out to valve inner cold system, and valve inner cold system can be proposed accordingly
Corrosion and scaling problem renovation scheme, fundamentally solves DC engineering valve inner cold system radiator and screening electrodes sealing ring is rotten
Erosion, screening electrodes scale problems, greatly improve valve cooling system operational reliability, reduce the locking risk caused by scale problems,
Improve the security and stability of power network.
Above-listed detailed description is illustrating for the utility model possible embodiments, and the embodiment simultaneously is not used to limit
The scope of the claims of the present utility model, all equivalence enforcements or change without departing from carried out by the utility model, it is intended to be limited solely by this case
In the scope of the claims.
Claims (10)
- A kind of 1. simulation experiment system of HVDC-valve inner cold system, it is characterised in that：Including filtering module, detection means and Loop module；Loop module includes ion-exchanger, main circulation pump, heating water tank, aluminium radiator, expansion tank and refrigerator, and master follows By being connected after pipeline successively heated water tank, aluminium radiator, expansion tank with refrigerator entrance, refrigerator goes out ring pump delivery outlet Mouth is connected by pipeline with main circulation pump input port so as to form main circulation loop, and ion-exchanger outlet is through outlet pipe with being located at Refrigerator exports the pipeline communication between main circulation pump input port, and outlet pipe is provided with water intaking valve；Detection means be arranged between aluminium radiator and expansion tank on pipeline and for detect the dissolved oxygen concentration in water, from Sub- concentration, electrical conductivity and pH value；Filtering module outlet is connected with ion-exchanger entrance.
- 2. the simulation experiment system of HVDC-valve inner cold system according to claim 1, it is characterised in that：The filtering Module includes：Pretreatment filters, first-stage reverse osmosis device, second level reverse osmosis apparatus, EDI demineralizers and pure water tank, it is described Pretreatment filters outlet is by pipeline successively through first-stage reverse osmosis device, second level reverse osmosis apparatus, EDI demineralizers and pure water It is connected after case with ion-exchanger entrance.
- 3. the simulation experiment system of HVDC-valve inner cold system according to claim 1, it is characterised in that：The ion Exchanger is cation and anion exchange device.
- 4. the simulation experiment system of HVDC-valve inner cold system according to claim 1, it is characterised in that：The simulation Pilot system includes water replanishing device, and water replanishing device includes water supply tank and small pump, and water supply tank outlet is connected with moisturizing pump intake, mended Exit of pump is connected with pure water tank inlet, and refrigerator and EDI demineralizers are connected between moisturizing pump discharge and pure water tank inlet, Water valve is provided between moisturizing pump discharge and pure water tank inlet.
- 5. the simulation experiment system of HVDC-valve inner cold system according to claim 1, it is characterised in that：The detection Device includes dissolved oxygen sensor, ion concentration measurement instrument, conductance instrument and pH value measuring instrument.
- 6. the simulation experiment system of HVDC-valve inner cold system according to claim 1, it is characterised in that：The master follows Loop back path is provided with automatic exhaust steam valve.
- 7. the simulation experiment system of HVDC-valve inner cold system according to claim 1, it is characterised in that：The master follows Loop back path is provided with CO2And O2Adjustment module, CO2And O2Adjustment module includes CO2Storage tank and O2Storage tank, CO2Storage tank and O2Storage tank Outlet connects through valve with main circulation loop respectively.
- 8. the simulation experiment system of HVDC-valve inner cold system according to claim 1, it is characterised in that：The expansion Water tank is provided with nitrogen pot, and the outlet of nitrogen pot is connected through magnetic valve with expansion tank, and safety valve is provided with the top of expansion tank.
- 9. the simulation experiment system of HVDC-valve inner cold system according to claim 1, it is characterised in that：The aluminium dissipates Hot device is two groups of aluminium radiators, and every group of aluminium radiator includes several aluminium radiators, the surface plating of one of which aluminium radiator There is corrosion resistant material.
- 10. the simulation experiment system of HVDC-valve inner cold system according to claim 1, it is characterised in that：It is described from Pressure gauge is provided between sub- exchanger and main circulation pump, water thermometer is provided between the main circulation pump and heating water tank, it is described to add Flowmeter is provided between boiler and aluminium radiator.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091754A (en) * | 2017-05-26 | 2017-08-25 | 中国南方电网有限责任公司超高压输电公司天生桥局 | A kind of simulation experiment system of HVDC-valve inner cold system |
| CN111650342A (en) * | 2020-06-29 | 2020-09-11 | 中国南方电网有限责任公司超高压输电公司广州局 | Scale formation and descaling test platform for pressure-equalizing electrode of cold water system in converter valve |
-
2017
- 2017-05-26 CN CN201720602997.7U patent/CN206740413U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091754A (en) * | 2017-05-26 | 2017-08-25 | 中国南方电网有限责任公司超高压输电公司天生桥局 | A kind of simulation experiment system of HVDC-valve inner cold system |
| CN111650342A (en) * | 2020-06-29 | 2020-09-11 | 中国南方电网有限责任公司超高压输电公司广州局 | Scale formation and descaling test platform for pressure-equalizing electrode of cold water system in converter valve |
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