CN205613260U - SF6 gas gathering system - Google Patents
SF6 gas gathering system Download PDFInfo
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- CN205613260U CN205613260U CN201620240876.8U CN201620240876U CN205613260U CN 205613260 U CN205613260 U CN 205613260U CN 201620240876 U CN201620240876 U CN 201620240876U CN 205613260 U CN205613260 U CN 205613260U
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- gas
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- 238000003860 storage Methods 0.000 claims abstract description 27
- 238000000746 purification Methods 0.000 claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 238000000926 separation method Methods 0.000 claims description 22
- 238000001914 filtration Methods 0.000 claims description 11
- 238000005276 aerator Methods 0.000 claims description 7
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 238000010992 reflux Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 160
- 229910018503 SF6 Inorganic materials 0.000 description 51
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 21
- 229960000909 sulfur hexafluoride Drugs 0.000 description 20
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000006378 damage Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000001988 toxicity Effects 0.000 description 3
- 231100000419 toxicity Toxicity 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000012491 analyte Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000005138 cryopreservation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000000505 pernicious effect Effects 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- OBTWBSRJZRCYQV-UHFFFAOYSA-N sulfuryl difluoride Chemical compound FS(F)(=O)=O OBTWBSRJZRCYQV-UHFFFAOYSA-N 0.000 description 2
- LSJNBGSOIVSBBR-UHFFFAOYSA-N thionyl fluoride Chemical compound FS(F)=O LSJNBGSOIVSBBR-UHFFFAOYSA-N 0.000 description 2
- 206010002660 Anoxia Diseases 0.000 description 1
- 241000976983 Anoxia Species 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- -1 SF2 Chemical compound 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000007953 anoxia Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 231100000004 severe toxicity Toxicity 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model provides a SF6 gas gathering system, include: gaseous storage device, the transformer room intercommunication of gaseous storage device through collecting the pipeline and having the SF6 transformer, gaseous purifier, gaseous purifier install on the collecting pipe way to make the SF6 gas that comes out from SF6 transformer internal leakage flow in in the gaseous storage device after gaseous purifier's purification, wherein, gaseous purifier includes gas separator, gas separator's air inlet and transformer room intercommunication, gas separator's gas outlet and gaseous storage device intercommunication, gas separator is last to be provided with first return -air mouth, and first return -air mouth is through first pipeline and transformer room intercommunication to make gas reflux in the gas separator to the transformer room in. The utility model provides a SF6 gas gathering system has solved the problem that makes SF6 take place to leak and then arouse environmental pollution easily when the indoor SF6 transformer among the prior art breaks down.
Description
Technical field
This utility model relates to harmful field of gas treatment, in particular to a kind of SF6Gas gathering system.
Background technology
Along with the continuous propelling of Urbanization Process In China, standing in great numbers in urban skyscraper, population is the most intensive, power consumption, transformator
Quantity is also being continuously increased.The oil mass of Conventional mass oil-filled transformer is relatively big, once catches fire the life to people because of fault
Property safety constitutes a serious threat.Therefore, six-component force balance transformator has been widely used in China city since the sixties in last century
Underground substation, city.
Compared with traditional filling transformer, due to SF6Non-combustible and the most combustion-supporting property of gas so that six-component force balance transformator does not has
There is the Potential feasibility of initiation fire, and its noise in running is low, particularly suitable at bustling commercial center and population
Intensive residential block uses.
SF6Although gas-insulated performance is superior, but it must be carried out strict quality surveillance and safety according to relevant regulatory requirements
Management.This is because SF6Gas in process of production or under the effect of the high energy factor, can decompose that generation is some poisonous even to be had
Severe toxicity, the objectionable impurities of severe corrosive.When system exists moisture, air (oxygen), electrode material, equipment and materials, can make
Obtaining catabolic process to complicate, cause catabolite value volume and range of product substantially to increase, hazardness strengthens.
SF6The harm of gaseous impurity mainly shows as toxicity and the corrosivity of catabolite.SF6Impurity in gas and catabolite
Middle acid substance particularly HF, SO2Existence can cause the corrosion of sulfur hexafluoride insulation electrical equipment material；The existence of moisture exists
Electric property may be caused under certain condition to deteriorate (the various electric arc analytes of sulfur hexafluoride gas and SF6Gas produces through hydrolysis
Fluohydric acid gas (HF) and sulphuric acid (H2SO4), some metal object and insulating part can be produced corrosiveness, and then leak, shadow
Ring the service life of electrical equipment), even cause serious equipment breakdown.And such as SF present in sulfur hexafluoride4、SOF2、
SF2、SO2F2, HF etc. be toxicity and the extremely strong compound of corrosivity, very big to harm, it is possible to cause the pernicious person
Accident.
But, owing to the workmanship of six-component force balance transformator, mounting process, aging, the blowing pressure of potted component etc. are former
Because causing SF in transformator6Gas leakage is difficult to avoid that.Once there is leakage failure in six-component force balance transformator, it is interior
Sulfur hexafluoride gas will escape in a large number, the SF leaked out6Gas and analyte thereof, in the accumulation of indoor low layer space, cause local
Anoxia and band poison, cause serious harm to the health entering indoor maintenance and the personnel of tour.
At present, when six-component force balance transformator occurs the emergencies such as a large amount of leakages, the common processing method of transformer station is: let out
After leakage alarm sends warning, staff should withdraw rapidly scene, if occurring in indoor location place, should open room ventilation
Device.Do not wear a gas mask or positive-pressure air respirator personnel no admittance, only through sufficient natural exhaust or pressure
Air draft, and through SF6Leakage monitoring system monitors SF6After gas, oxygen content are up to standard, personnel are just accurate to be entered.
Above-mentioned ventilation emptying process scheme is not suitable for being positioned at the underground substation six-component force balance transformer leakage event of down town
Barrier.If leakage failure still selects ventilation emptying measure will make SF after occurring6Gas and equipment During Process of Long-term Operation produce
Toxicity and the extremely strong complicated catabolite such as SF of corrosivity4、SOF2、SF2、SO2F2, HF etc. pollute ground air, over the ground
Dough figurine group produces body harm, and may cause pernicious personal injury.
Visible, underground substation six-component force balance transformator once Sudden Leakage fault, be in a short period of time to Interior Space
In between, the sulfur hexafluoride gas of leakage reclaims, and makes gas leakage accidents scene be rapidly achieved the state that can carry out rushing to repair.
Utility model content
Main purpose of the present utility model is to provide a kind of SF6Gas gathering system, to solve the SF of indoor of the prior art6
SF is easily made when transformator breaks down6There is leakage and then the problem causing environmental pollution.
To achieve these goals, this utility model provides a kind of SF6Gas gathering system, including: gas storage device, gas
Body storage device passes through collecting and has SF6Transformer room's connection of transformator；Gas cleaning plant, gas cleaning plant is pacified
It is contained in collecting, so that from SF6Transformator internal leakage SF out6Gas flows into gas after the purification of gas cleaning plant
In body storage device；Wherein, gas cleaning plant includes gas trap, and the air inlet of gas trap connects with transformer room,
The gas outlet of gas trap connects with gas storage device；Being provided with the first gas returning port on gas trap, the first gas returning port leads to
Cross the first pipeline to connect with transformer room, so that the gas backstreaming in gas trap is in transformer room.
Further, SF6Gas gathering system also includes: the first check valve, and the first check valve is arranged on the first pipeline, first
The air inlet of check valve connects with the first gas returning port of gas trap.
Further, SF6Gas gathering system also includes: on-off control valve, and on-off control valve is arranged on the first pipeline.
Further, SF6Gas gathering system also includes: aerator, and aerator is arranged on the first pipeline, in making the first pipeline
Air-flow flow in transformer room from gas cleaning plant.
Further, gas cleaning plant also includes: water separation module, and water separation module is arranged on the upstream of gas trap.
Further, gas trap is provided with the second gas returning port, SF6Gas gathering system also includes the second pipeline, the second pipe
The one end on road connects with the second gas returning port, and the other end of the second pipeline is separated from water the air inlet connection of module, so that gas separates
Gas backstreaming in device is in water separation module.
Further, gas cleaning plant also includes: filtering foreign module, and filtering foreign module is arranged on the upper of water separation module
Trip, one end away from gas trap of the second pipeline is connected to filtering foreign module and is separated from water between module.
Further, SF6Gas gathering system also includes: the second check valve, and the second check valve is arranged on the second pipeline, second
The air inlet of check valve connects with the second gas returning port of gas trap.
SF in this utility model6Gas gathering system includes gas storage device and gas cleaning plant, due to gas storage device
Being connected with transformer room by collecting, gas cleaning plant is arranged in collecting, so, just can make from SF6Transformation
Device internal leakage SF out6Gas is after the purification of gas cleaning plant in inflow gas storage device, and then reaches to collect leakage
SF6The purpose of gas, thus solve the SF of indoor of the prior art6SF is easily made when transformator breaks down6Let out
The problem leaked into and cause environmental pollution.
Accompanying drawing explanation
The Figure of description of the part constituting the application is used for providing being further appreciated by of the present utility model, of the present utility model
Schematic description and description is used for explaining this utility model, is not intended that improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows according to SF of the present utility model6The structural representation of the embodiment of gas gathering system.
Wherein, above-mentioned accompanying drawing includes the following drawings labelling:
10, gas storage device；20, collecting；30, transformer room；31、SF6Transformator；40, gas cleaning plant；
41, gas trap；42, water separation module；43, filtering foreign module；51, the first pipeline；52, the second pipeline；61、
First check valve；62, the second check valve；70, on-off control valve；80, aerator.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.
Describe this utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Present embodiments provide a kind of SF6Gas gathering system, refer to Fig. 1, this SF6Gas gathering system includes: gas stores up
Cryopreservation device 10, gas storage device 10 passes through collecting 20 and has SF6The transformer room 30 of transformator 31 connects；Gas
Body purifier 40, gas cleaning plant 40 is arranged in collecting 20, so that from SF6Transformator 31 internal leakage is out
SF6Gas is after the purification of gas cleaning plant 40 in inflow gas storage device 10；Wherein, gas cleaning plant 40 wraps
Including gas trap 41, the air inlet of gas trap 41 connects with transformer room 30, the gas outlet of gas trap 41 and gas
Body storage device 10 connects；Being provided with the first gas returning port on gas trap 41, the first gas returning port is by the first pipeline 51 and change
Depressor room 30 connects, so that the gas backstreaming in gas trap 41 is in transformer room 30.
SF in the present embodiment6Gas gathering system includes gas storage device 10 and gas cleaning plant 40, owing to gas stores
Device 10 is connected with transformer room 30 by collecting 20, and gas cleaning plant 40 is arranged in collecting 20, so,
Just can make from SF6Transformator 31 internal leakage SF out6Gas inflow gas after the purification of gas cleaning plant 40 stores
In device 10, and then reach to collect the SF of leakage6The purpose of gas, thus solve the SF of indoor of the prior art6Transformation
SF is easily made when device breaks down6There is leakage and then the problem causing environmental pollution.
It addition, gas cleaning plant 40 includes that gas trap 41, the air inlet of gas trap 41 connect with transformer room 30,
The gas outlet of gas trap 41 connects with gas storage device 10, and first time its mouth of gas trap 41 passes through the first pipeline
51 connect with transformer room 30, as such, it is possible to make the portion gas in gas trap 41 be back in transformer room 30, no
It is only capable of the air pressure in holding transformer room 30, moreover it is possible to gas is filtered again, it is ensured that collect in gas storage device 10
The purity of gas.
In the present embodiment, SF6Gas gathering system also includes: the first check valve 61, and the first check valve 61 is arranged on the first pipe
On road 51, the air inlet of the first check valve 61 connects with the first gas returning port of gas trap 41.In this manner it is ensured that first
Airflow direction in pipeline 51.
In order to control the gas break-make in the first pipeline 51, SF6Gas gathering system also includes: on-off control valve 70, break-make control
Valve 70 processed is arranged on the first pipeline 51.
In the present embodiment, SF6Gas gathering system also includes: aerator 80, and aerator 80 is arranged on the first pipeline 51,
The air-flow in the first pipeline 51 is made to flow in transformer room 30 from gas cleaning plant 40.
In order to separate the moisture in gas, gas cleaning plant 40 also includes: water separation module 42, and water separation module 42 is arranged
Upstream at gas trap 41.
In the present embodiment, gas trap 41 is provided with the second gas returning port, SF6Gas gathering system also includes the second pipeline
52, one end of the second pipeline 52 connects with the second gas returning port, and the other end of the second pipeline 52 is separated from water the air inlet of module 42
Connection, so that the gas backstreaming in gas trap 41 is in water separation module 42.
By arranging the second pipeline 52, the portion gas in gas trap 41 can be back between water separation module 42,
Carry out again water to separate, it is ensured that water separating effect, it is achieved circularly purifying.
Preferably, the first gas returning port is arranged on the bottom of gas trap 41, and the second gas returning port is arranged on gas trap 41
Top.
In order to remove the foreign material in gas, gas cleaning plant 40 also includes: filtering foreign module 43, filtering foreign module 43
Being arranged on the upstream of water separation module 42, one end away from gas trap 41 of the second pipeline 52 is connected to filtering foreign module
43 are separated from water between module 42.
In order to prevent the gas reverse flow in the second pipeline 52, SF6Gas gathering system also includes: the second check valve 62, the
Two check valves 62 are arranged on the second pipeline 52, the air inlet of the second check valve 62 and the second gas returning port of gas trap 41
Connection.
SF in the present embodiment6Gas gathering system is come in collecting chamber six by three or multiple gas automatic collecting device arranged side by side
Sulfur hexafluoride gas mixture in sulfur fluoride gas-insulated transformer leakage failure rear space.Gas automatic collecting device is fixed on six
The vent of sulfur fluoride gas-insulated transformer room (transformer room 30) underground, when there is leakage accident, collects container certainly
Dynamic closing, reclaims the passage providing airtight for rear class gas.
Accident treatment terminates, and collects container and automatically opens wide, it is ensured that original channels open.The six-component force balance transformation in which room
Device generation leakage failure, the gas automatic collecting device of its underground starts when receiving leakage alarm signal and closes, and collects sky
Sulfur hexafluoride between and the mixed gas of air.
The leakage sulfur hexafluoride gas collected enters dust filter unit and the analyte of concatenation through gas pipeline by electromagnetic valve V1
Filter, filters out the dust in mixed gas；By the sulfur hexafluoride gas of dust filter unit at centrifugal blower and vortex pneumatics
Under the effect of machine, enter water separator and contaminant filter (filters SF6Catabolite, oil, micro-water) by a large amount of water in gas
Divide and other magazins' layout.
Gas after filtration, purification continues through pipeline and flows through the first buffer tank, electromagnetic valve V2, air separation module successively, passes through
Sulfur hexafluoride gas concentration after secondary air segregation apparatus is the highest (70%), can keep in the second buffer tank.First
Buffer tank, electromagnetic valve V2, air separation module, each gateway of the second buffer tank are connected by pipeline, air separation module
And it is provided with electromagnetic valve V3 on the pipeline that second between buffer tank.Air separation module is the membrane separation technique used, the second-order separation
Sulfur hexafluoride gas and air sufficiently can be separated, to separate air, improve the concentration of sulfur hexafluoride gas.
The sulfur hexafluoride gas that concentration in second buffer tank is higher, in addition it is also necessary to store up with storage in liquid to sulfur hexafluoride gas after compression
In cryopreservation device, emission treatment after waiting follow-up Recovery Purifying or reaching environmental protection standard.If sulfur hexafluoride gas storage device be by
The sulfur hexafluoride caching pipe composition of dry series connection.The sulfur hexafluoride gas that concentration in second buffer tank is higher is flowed successively by pipeline
Through electromagnetic valve V4, needle-valve C1, and under the effect of compressor bank (needing 2 compressor parallels to constitute), pass through along pipeline
Electromagnetic valve V5 enters sulfur hexafluoride gas storage device；Sulfur hexafluoride gas storage device is in series by multiple holding vessels, each phase
It is each provided with 1 electromagnetic valve between the adjacent tank connected pipeline of storage.
The electromagnetic valve related in this emergent flow process is in opening, and other valves being not related to are closed.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for this area
For technical staff, this utility model can have various modifications and variations.All within spirit of the present utility model and principle, institute
Any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (8)
1. a SF6Gas gathering system, it is characterised in that including:
Gas storage device (10), described gas storage device (10) passes through collecting (20) and has SF6Transformation
Transformer room (30) connection of device (31)；
Gas cleaning plant (40), described gas cleaning plant (40) is arranged in described collecting (20), so that
From described SF6Transformator (31) internal leakage SF out6Gas flows after the purification of described gas cleaning plant (40)
Enter in described gas storage device (10)；
Wherein, described gas cleaning plant (40) includes gas trap (41), entering of described gas trap (41)
QI KOU connects with described transformer room (30), the gas outlet of described gas trap (41) and described gas storage device
(10) connection；Being provided with the first gas returning port on described gas trap (41), described first gas returning port is by the first pipe
Road (51) connects with described transformer room (30), so that the gas backstreaming in described gas trap (41) is to described
In transformer room (30).
SF the most according to claim 16Gas gathering system, it is characterised in that described SF6Gas gathering system also includes:
First check valve (61), described first check valve (61) is arranged on described first pipeline (51), and described first
The air inlet of check valve (61) connects with the first gas returning port of described gas trap (41).
SF the most according to claim 16Gas gathering system, it is characterised in that described SF6Gas gathering system also includes:
On-off control valve (70), described on-off control valve (70) is arranged on described first pipeline (51).
SF the most according to claim 16Gas gathering system, it is characterised in that described SF6Gas gathering system also includes:
Aerator (80), described aerator (80) is arranged on described first pipeline (51), makes described first pipeline (51)
Interior air-flow flows in described transformer room (30) from described gas cleaning plant (40).
SF the most according to claim 16Gas gathering system, it is characterised in that described gas cleaning plant (40) also includes:
Water separation module (42), described water separation module (42) is arranged on the upstream of described gas trap (41).
SF the most according to claim 56Gas gathering system, it is characterised in that described gas trap is provided with on (41)
Second gas returning port, described SF6Gas gathering system also includes the second pipeline (52), one end of described second pipeline (52)
Connect with described second gas returning port, the other end of described second pipeline (52) and the air inlet of described water separation module (42)
Mouth connection, so that the gas backstreaming in described gas trap (41) is interior to described water separation module (42).
SF the most according to claim 66Gas gathering system, it is characterised in that described gas cleaning plant (40) also includes:
Filtering foreign module (43), described filtering foreign module (43) is arranged on the upstream of described water separation module (42),
One end away from described gas trap (41) of described second pipeline (52) is connected to described filtering foreign module (43)
And between described water separation module (42).
SF the most according to claim 66Gas gathering system, it is characterised in that described SF6Gas gathering system also includes:
Second check valve (62), described second check valve (62) is arranged on described second pipeline (52), and described second
The air inlet of check valve (62) connects with the second gas returning port of described gas trap (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620240876.8U CN205613260U (en) | 2016-03-25 | 2016-03-25 | SF6 gas gathering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620240876.8U CN205613260U (en) | 2016-03-25 | 2016-03-25 | SF6 gas gathering system |
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| Publication Number | Publication Date |
|---|---|
| CN205613260U true CN205613260U (en) | 2016-10-05 |
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ID=57031433
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106744711A (en) * | 2016-12-21 | 2017-05-31 | 河南省日立信股份有限公司 | The purification-recovery system of mixed gas in six-component force balance transformer leakage rear chamber |
-
2016
- 2016-03-25 CN CN201620240876.8U patent/CN205613260U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106744711A (en) * | 2016-12-21 | 2017-05-31 | 河南省日立信股份有限公司 | The purification-recovery system of mixed gas in six-component force balance transformer leakage rear chamber |
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