CN110146235A - Transformer suppresses leak test dedicated unit and suppresses leak test test method - Google Patents
Transformer suppresses leak test dedicated unit and suppresses leak test test method Download PDFInfo
- Publication number
- CN110146235A CN110146235A CN201910443691.5A CN201910443691A CN110146235A CN 110146235 A CN110146235 A CN 110146235A CN 201910443691 A CN201910443691 A CN 201910443691A CN 110146235 A CN110146235 A CN 110146235A
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- Prior art keywords
- transformer
- capsule
- conservator
- pressure
- leak test
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- 238000010998 test method Methods 0.000 title claims abstract description 11
- 239000002775 capsule Substances 0.000 claims abstract description 32
- 239000000446 fuel Substances 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims abstract description 3
- 239000002828 fuel tank Substances 0.000 claims description 24
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 8
- 239000003292 glue Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 8
- 238000007599 discharging Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 241000233855 Orchidaceae Species 0.000 description 1
- 239000007963 capsule composition Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000009666 routine test Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
Abstract
Leak test dedicated unit is suppressed this application discloses a kind of transformer and suppresses leak test test method, and wherein dedicated unit includes: capsule-type conservator, and the fuel outlet of capsule-type conservator is used to be connected to the oiling transformer mouth for suppress leak test test；First pressure sensor is connected between capsule-type conservator and transformer, for detecting liquid pressure value in oil tank of transformer；Pressure relief device is connected on capsule-type conservator, for pressure release outside when air pressure is more than the second preset pressure value in the capsule of capsule-type conservator；Compressed air source unit, the outlet pipe of compressed air source unit are connected to the capsule air inlet of capsule-type conservator, suppress for supplying gas into the capsule of capsule-type conservator；Controller is connect with compressed air source unit, the equal signal of first pressure sensor；Controller is configured as the pressure value detected according to first pressure sensor control compressed air source unit start and stop.The achievable capsule-type of the application and bellows-type transformer suppress leak test test, can also reduce service personnel's working strength.
Description
Technical field
The application belongs to transformer routine test field, is related to a kind of transformer and suppresses leak test dedicated unit and suppress leak test
Test method.
Background technique
When transformer operates normally, insulating oil is filled in ontology fuel tank, and each connecting portion of transformer generallys use flange
Rubber mat is compressed to be sealed.Flange rubber mat, which only meets certain decrement, just can guarantee good seal, but due to manufacturing work
There is certain deviation sometimes in the reason of skill and mounting process, rubber mat decrement.Transformer new clothes or overhaul finish throwing
Before entering operation, due to not having on-load, the insulation oil temperature in fuel tank is lower, if rubber mat decrement is insufficient at this time, usually
It is not in leakage.But after transformer puts into operation, due to on-load, the insulating oil in fuel tank can be because in temperature
It rises and volume expansion occurs, at this time if rubber mat decrement is insufficient, it will cause leakages.
So finishing before putting into operation in transformer installation and overhaul, need to carry out transformer lasting 12 hours to suppress
Leak test test, i.e., simulate practical hot operation state by being suppressed to oil tank of transformer internal transformer oil, to survey
Trying transformer whether there is breakthrough.For filling transformer in capsule and bellows, can by air pump to conservator suppress come
It completes.But for filling transformer outside bellows, since bellows is stainless steel thin slice and ripple tube layer and layer interconnecting piece
Bit comparison is weak, can not restPose if by excessive pressure, therefore can not be suppressed by air pump to conservator come complete
It is tested at leak test is suppressed.In addition, existing suppress the artificial monitoring pressure always of leak test test needs and manually adjust, working strength
It is high.
Summary of the invention
In view of drawbacks described above in the prior art or deficiency, it is intended to provide a kind of transformer and suppresses leak test dedicated unit and beat
Press leak test test method.
In a first aspect, the application, which provides a kind of transformer, suppresses leak test dedicated unit, comprising:
Capsule-type conservator, the fuel outlet of capsule-type conservator are used to connect with the oiling transformer mouth for suppress leak test test
It is logical；
First pressure sensor is connected between capsule-type conservator and transformer, for detecting liquid in oil tank of transformer
Pressure value；
Pressure relief device is connected on capsule-type conservator, in the capsule of capsule-type conservator air pressure be more than second default
Outside pressure release when pressure value；
Compressed air source unit, the outlet pipe of compressed air source unit are connected to the capsule air inlet of capsule-type conservator, are used for capsule-type
It supplies gas and suppresses in the capsule of conservator；
Controller is connect with compressed air source unit, the equal signal of first pressure sensor；Controller is configured as according to first pressure
The pressure value that sensor detects controls compressed air source unit start and stop.
Transformer provided by the present application is suppressed leak test dedicated unit and can be completed including the outer filling transformer of bellows
Transformer suppress leak test test, service personnel's working strength can also be reduced.When the external factors such as increasing due to air themperature
When causing that gas pressure is increased to beyond transformer tolerance range in capsule in capsule-type conservator, pressure relief device can be opened, and pressure is worked as
Power is reduced to when can be in tolerance range, and pressure relief device is closed, and security performance is improved.
Further, the first electromagnetic valve is equipped between the gas outlet of compressed air source unit and capsule-type conservator.First solenoid valve
The opening and closing of door is matched with the start and stop of compressed air source unit, and when compressed air source unit works, the first electromagnetic valve is in open shape body；Gas source dress
It sets when stopping working, the first electromagnetic valve is in close state, and compressed air source unit can be prevented to be not closed completely and cause pressure release.
Further, the fuel outlet of capsule-type conservator and the pouring orifice of transformer pass through flanged joint；First pressure sensing
Device is connected on flange.First pressure sensor is mounted on the connecting flange between capsule-type conservator and transformer, more can essence
The pressure that true reflection transformer body fuel tank is born.
Further, pressure relief device includes safety valve, or include the second pressure sensor being connect with controller signals,
Second solenoid valve door；Controller is configured as the pressure value detected according to second pressure sensor control second solenoid valve door and opens
It closes.
Further, compressed air source unit includes micro air pump；Micro air pump air inlet is connected with respirator.Respirator is for doing
The dry gas into micro air pump, it is ensured that enter the gas moisture-free in capsule-type conservator.
Further, it further includes the pedestal for carrying each component that transformer, which suppresses leak test dedicated unit,；It is set below pedestal
There is idler wheel.Pedestal has four rolling, facilitates equipment mobile for carrying all working device.
Second aspect, the application also provide a kind of transformer for suppressing leak test dedicated unit using above-mentioned transformer and suppress examination
Leak test method, comprising the following steps:
S1: initialization, so that capsule-type conservator is connected to the ontology fuel tank of transformer, and the shell and glue of capsule-type conservator
Without gas between capsule；
S2: the valve on transformer and transformer between original conservator is closed；
S3: starting compressed air source unit, suppressed into the capsule of capsule-type conservator so that the transformer oil in capsule-type conservator into
Enter into transformer body fuel tank, and transformer body fuel tank is transferred the pressure to by transformer oil；
When the pressure value that first pressure sensor detects reaches the first preset pressure value, controller controls compressed air source unit
It stops working；When the pressure value that first pressure sensor detects is lower than the first preset pressure value, controller controls gas source dress
Starting is set, so that transformer body fuel tank is born always within the scope of setting pressure limit；
When pressure is more than the second preset pressure value in the capsule of capsule-type conservator, pressure relief device is opened, and capsule-type is discharged
Gas in the capsule of conservator, after pressure drops to the second preset pressure value, pressure relief device is closed；
S4: when suppressing duration arrival preset duration, opening the valve between the original conservator of transformer and transformer body,
Each member reset completes transformer and suppresses leak test test.
Further, step S1 is specifically included: connection capsule-type conservator and transformer, so that in the ontology fuel tank of transformer
The transformer oil gas that is flowed into capsule-type conservator, and is discharged in capsule-type conservator.The step S4 corresponding with this step S1
In each member reset also include transformer oil reset, the repositioning method of transformer oil are as follows: compressed air source unit is manually booted, by capsule
Transformer oil in formula conservator is returned again in transformer body fuel tank.
Further, step S1 is specifically included: being filled transformer oil to capsule-type conservator, and is cooked contaminated product examination before suppressing
It tests to ensure that the transformer oil in transformer body fuel tank will not be polluted during suppressing；Connect capsule-type conservator and transformer.
Further, step S3 further includes while control compressed air source unit starts/stops, and control is arranged in compressed air source unit
Gas outlet and capsule-type conservator between the first electromagnetic valve open/close.
The application has the advantages and positive effects of: transformer provided by the present application is suppressed leak test dedicated unit and can be realized
Transformer suppresses leak test test (including capsule-type and bellows-type transformer), especially for can not currently carry out suppressing leak test examination
The outer oil-filled transformer of the bellows tested, helps to improve transformer safety stable operation, time saving and energy saving, securely and reliably.
The technical issues of in addition to the application described above solution, constitutes the technical characteristic of technical solution and by these
Except advantage brought by the technical characteristic of technical solution, wrapped in other technologies problem that the application can solve, technical solution
Advantage brought by the other technical characteristics contained and these technical characteristics, makees further details of hereinafter in conjunction with attached drawing
Explanation.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, the application's is other
Feature, objects and advantages will become more apparent upon:
Fig. 1 is that the transformer that the embodiment of the present application 1 provides suppresses leak test dedicated unit structural schematic diagram；
Fig. 2 is that the transformer that the embodiment of the present application 1 provides suppresses leak test dedicated unit appearance schematic diagram.
In figure: 1, pedestal；2, controller；3, micro air pump；4, respirator；5, capsule-type conservator；5-1, shell；5-2, glue
Capsule；6, the first electromagnetic valve；7, second solenoid valve door；8, first pressure sensor；9, second pressure sensor；10, exhaust valve
Door；11, oil discharging valve；12, flange.
Specific embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related invention, rather than the restriction to the invention.It also should be noted that in order to
Convenient for description, part relevant to invention is illustrated only in attached drawing.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Embodiment 1
Fig. 1 and Fig. 2 are please referred to, the present embodiment provides a kind of transformers to suppress leak test dedicated unit, including pedestal 1, control
Device 2, micro air pump 3, silica gel pot type respirator 4, capsule-type conservator 5, the first electromagnetic valve 6, second solenoid valve door 7, first are pressed
Force snesor 8, second pressure sensor 9, drain tap 10, oil discharging valve 11 and flange 12；
Controller 2 is mainly controlled by receiving the pressure signal from first pressure sensor 8, second pressure sensor 9
The start and stop of micro air pump 3 processed and the opening and closing of the first electromagnetic valve 6, second solenoid valve door 7；
Micro air pump 3 suppresses work for completing, and carries out start and stop by controller 2；
Silica gel pot type respirator 4 is for the dry gas entered in micro air pump 3, it is ensured that enters in capsule-type conservator 5
Gas moisture-free；
Capsule-type conservator 5 includes shell 5-1 and capsule 5-2, is full of transformer oil in shell, micro air pump 3 beats gas
Enter into capsule 5-2, gas pressure passes to transformer body fuel tank by transformer oil, to complete to suppress leak test test；
The opening and closing of first electromagnetic valve 6 is matched with the start and stop of micro air pump 3, when micro air pump 3 works, the first solenoid valve
Door 6 is in open shape body；When micro air pump 3 stops working, the first electromagnetic valve 6 is in close state, and can prevent miniature gas
Pump 3, which is not closed completely, causes pressure release；
Second solenoid valve door 7 is used for overvoltage protection, causes capsule-type conservator 5 when the external factors such as increasing due to air themperature
When gas pressure is increased to beyond transformer tolerance range in middle capsule, second solenoid valve door 7 can be automatically opened, and work as pressure reduction
To can be in tolerance range when, second solenoid valve door 7 is automatically closed；
First pressure sensor 8 is used to control the opening and closing of the first electromagnetic valve 6 and the start and stop of micro air pump 3, is mounted on method
On orchid 12, it more can accurately reflect the pressure that transformer-cabinet is born；
Second pressure sensor 9 is used to control the opening and closing of second solenoid valve door 7；
Drain tap 10 is for when starting to work, it is internal that transformer body oil enters discharge in 5 shell of capsule-type conservator
All gas；
Oil discharging valve 11 is for being discharged remaining transformer oil in capsule-type conservator 5；
Flange 12 is for the present apparatus to be connected with oiling transformer flange；
Pedestal 1 has four wheels, facilitates equipment mobile for carrying all working device.
In the present embodiment, controller 2 selects KH100 model controller, first pressure sensor 8 and second pressure sensing
Device 9 selects MIK-P300 pressure transmitter；In the other embodiments of the application, controller and the first, second pressure sensing
Device can also use other models.
The present embodiment also provides a kind of to be suppressed leak test dedicated unit and is carried out suppressing leak test to transformer using above-mentioned transformer
The method of test, includes the following steps:
Step 1: application connection hose and flange by transformer provided in this embodiment suppress leak test dedicated unit with into
Row suppresses the oiling transformer flanged joint of leak test test.
Oil discharging valve 11 and oiling flange valve are opened, the transformer oil in transformer body fuel tank relies on self gravity stream
Enter into capsule-type conservator 5, by drain tap 10, excludes the gas in capsule-type conservator 5.
Step 2: checking that all devices are in normal condition, it is contemplated that the unbearable excessive pressure of conservator needs before suppressing
Close the valve between the original conservator of transformer and transformer body.
Step 3: starting micro air pump 3, outside air enter capsule by silica gel pot type respirator 4 and micro air pump 3
In the capsule 5-2 of formula conservator 5, capsule 5-2 volume increases, and the transformer oil squeezed in capsule-type conservator 5 enters transformer sheet
In body fuel tank, such gas pressure passes to transformer-cabinet by capsule 5-2 and transformer oil.When first pressure sensor 8
After the pressure value detected reaches the first preset pressure value, controller 2 controls micro air pump 3 and stops working, while solenoid valve 1 closes
It closes, device is in constant pressure hold mode.If in constant pressure hold mode, since ambient temperature raising causes second pressure sensor
When 9 pressure values detected exceed the second preset pressure value, then controller 2 controls second solenoid valve door 7 and opens progress pressure release, when
After pressure value drops to the second preset pressure value, controller 2 controls second solenoid valve door 7 and closes.If since ambient temperature drops
The low pressure value for causing first pressure sensor 8 to detect is less than the first preset pressure value, then controller 2 controls micro air pump 3
It starts to work, while the first electromagnetic valve 6 is opened.It can ensure that transformer body fuel tank is born always in setting pressure limit in this way
In range.
Step 4: opening the original conservator of transformer when suppressing duration arrival preset duration (meeting code requirement) and becoming
Valve between depressor ontology manually boots micro air pump 3, and the transformer oil in capsule-type conservator 5 is returned transformation again
In device ontology fuel tank.If the transformer oil in capsule-type conservator 5 is not returned ontology fuel tank, it will cause transformer bodies to lack
Oil.
Step 5: closing oiling transformer flange valve, equipment is removed, site clearing completes transformer and suppresses leak test examination
It tests.
Embodiment 2
The present embodiment provides a kind of transformers to suppress leak test dedicated unit, and main part is same as Example 1, same section
It repeats no more.This embodiment differs from embodiment 1 in that in the present embodiment, safety is arranged on capsule-type conservator 5
Valve, when pressure is more than the second preset pressure value in capsule 5-2, safety valve automatically opens pressure release；When pressure value is low in capsule 5-2
When the second preset pressure value, safety valve is automatically closed.Second solenoid valve door and second pressure sensing is no longer arranged in the present embodiment
Device.
Leak test test is suppressed correspondingly, suppressing leak test dedicated unit using transformer provided in this embodiment and carrying out transformer
Method and step three in, if causing pressure in capsule 5-2 beyond second since ambient temperature increases in constant pressure hold mode
When preset pressure value, then safety valve automatically opens carry out pressure release, and after pressure value drops to the second preset pressure value, safety valve is certainly
It is dynamic to close.
Embodiment 3
Leak test dedicated unit is suppressed the present embodiment provides a kind of transformer and suppresses leak test dedicated unit using the transformer
The method for carrying out suppressing leak test test to transformer, wherein dedicated unit is same as Example 1, test method main part and reality
Apply that example 1 is identical, and something in common repeats no more.This embodiment differs from embodiment 1 in that in test provided in this embodiment
In the method first step, the gas in capsule-type conservator 5 is excluded without the transformer oil in transformer body, but in advance by capsule
Formula conservator 5 fills transformer oil, and needs to do oil blending test before suppressing, it is ensured that transformer sheet will not be polluted during suppressing
Transformer oil in body fuel tank.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art
Member is it should be appreciated that invention scope involved in the application, however it is not limited to technology made of the specific combination of above-mentioned technical characteristic
Scheme, while should also cover in the case where not departing from the inventive concept, it is carried out by above-mentioned technical characteristic or its equivalent feature
Any combination and the other technical solutions formed.Such as features described above has similar function with (but being not limited to) disclosed herein
Can technical characteristic replaced mutually and the technical solution that is formed.
Claims (10)
1. a kind of transformer suppresses leak test dedicated unit characterized by comprising
Capsule-type conservator, the fuel outlet of capsule-type conservator are used to be connected to the oiling transformer mouth for suppress leak test test；
First pressure sensor is connected between the capsule-type conservator and transformer, for detecting liquid in oil tank of transformer
Pressure value；
Pressure relief device is connected on the capsule-type conservator, in the capsule of the capsule-type conservator air pressure be more than second
Outside pressure release when preset pressure value；
Compressed air source unit, the outlet pipe of compressed air source unit are connected to the capsule air inlet of the capsule-type conservator, are used for the glue
It supplies gas and suppresses in the capsule of bellows conservator；
Controller is connect with the compressed air source unit, the equal signal of first pressure sensor；The controller is configured as according to
The pressure value that first pressure sensor detects controls the compressed air source unit start and stop.
2. transformer according to claim 1 suppresses leak test dedicated unit, which is characterized in that the outlet of the compressed air source unit
The first electromagnetic valve is equipped between mouth and the capsule-type conservator.
3. transformer according to claim 1 suppresses leak test dedicated unit, which is characterized in that the capsule-type conservator is put
The pouring orifice of hydraulic fluid port and transformer passes through flanged joint；The first pressure sensor is connected on the flange.
4. transformer according to claim 1 suppresses leak test dedicated unit, which is characterized in that the pressure relief device includes peace
Full valve, or the second pressure sensor including being connected with the controller in a signal way., second solenoid valve door；The controller is matched
It is set to and the second solenoid valve door opening and closing is controlled according to the pressure value that the second pressure sensor detects.
5. transformer according to claim 1 suppresses leak test dedicated unit, which is characterized in that the compressed air source unit includes micro-
Type air pump；The micro air pump air inlet is connected with respirator.
6. transformer according to claim 1 suppresses leak test dedicated unit, which is characterized in that the transformer suppresses leak test
Dedicated unit further includes the pedestal for carrying each component；Idler wheel is equipped with below the pedestal.
7. a kind of transformer for suppressing leak test dedicated unit using transformer as claimed in any one of claims 1 to 6 suppresses leak test
Test method, which comprises the following steps:
S1: initialization, so that the capsule-type conservator is connected to the ontology fuel tank of transformer, and the shell of the capsule-type conservator
Without gas between capsule；
S2: the valve on transformer and transformer between original conservator is closed；
S3: start the compressed air source unit, suppressed in the capsule of Xiang Suoshu capsule-type conservator, so that the transformer in capsule-type conservator
Oil enters in transformer body fuel tank, and transfers the pressure to transformer body fuel tank by transformer oil；
When the pressure value that first pressure sensor detects reaches the first preset pressure value, controller, which controls compressed air source unit, to be stopped
Work；When the pressure value that first pressure sensor detects is lower than the first preset pressure value, controller control compressed air source unit is opened
It is dynamic, so that transformer body fuel tank is born always within the scope of setting pressure limit；
When pressure is more than the second preset pressure value in the capsule of the capsule-type conservator, pressure relief device is opened, and the glue is discharged
Gas in the capsule of bellows conservator, after pressure drops to the second preset pressure value, the pressure relief device is closed；
S4: when suppressing duration arrival preset duration, the valve between the original conservator of transformer and transformer body, each portion are opened
Part resets, and completes transformer and suppresses leak test test.
8. transformer according to claim 7 suppresses leak test test method, which is characterized in that step S1 is specifically included:
The capsule-type conservator and transformer are connected, so that the transformer oil in the ontology fuel tank of transformer is flowed into the capsule
In formula conservator, and the gas being discharged in the capsule-type conservator.
9. transformer according to claim 7 suppresses leak test test method, which is characterized in that step S1 is specifically included:
It will not be dirty during filling transformer oil to the capsule-type conservator, and do oil blending test before suppressing to ensure to suppress
Contaminate the transformer oil in transformer body fuel tank；Connect the capsule-type conservator and transformer.
10. transformer according to claim 7 suppresses leak test test method, which is characterized in that step S3 further includes controlling
While making the compressed air source unit and start/stop, control be arranged in the compressed air source unit gas outlet and the capsule-type conservator
Between the first electromagnetic valve open/close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910443691.5A CN110146235A (en) | 2019-05-27 | 2019-05-27 | Transformer suppresses leak test dedicated unit and suppresses leak test test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910443691.5A CN110146235A (en) | 2019-05-27 | 2019-05-27 | Transformer suppresses leak test dedicated unit and suppresses leak test test method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110146235A true CN110146235A (en) | 2019-08-20 |
Family
ID=67593134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910443691.5A Pending CN110146235A (en) | 2019-05-27 | 2019-05-27 | Transformer suppresses leak test dedicated unit and suppresses leak test test method |
Country Status (1)
| Country | Link |
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| CN (1) | CN110146235A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113571302A (en) * | 2021-08-06 | 2021-10-29 | 国网新疆电力有限公司检修公司 | Transformer capsule type oil conservator stretching tool and using method |
| CN113932992A (en) * | 2020-07-13 | 2022-01-14 | 特变电工智能电气有限责任公司 | Transformer oil static pressure device and transformer system |
| CN114323503A (en) * | 2021-11-25 | 2022-04-12 | 国网湖南省电力有限公司 | Integral sealing test detection method for oil-immersed transformer |
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| CN206177540U (en) * | 2016-10-10 | 2017-05-17 | 广西电网有限责任公司电力科学研究院 | Power transformer stores up oil tank capsule automatic charging leak hunting device |
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| CN109559872A (en) * | 2018-12-21 | 2019-04-02 | 云南电网有限责任公司电力科学研究院 | Transformer capsule-type conservator with pressure compensation and its control monitoring method |
| CN209783844U (en) * | 2019-05-27 | 2019-12-13 | 国网冀北电力有限公司廊坊供电公司 | Special device for transformer pressure leakage test |
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| CN203376113U (en) * | 2013-06-09 | 2014-01-01 | 广东电网公司东莞供电局 | Leakage-testing device for metal corrugated type conservator transformer |
| CN206177540U (en) * | 2016-10-10 | 2017-05-17 | 广西电网有限责任公司电力科学研究院 | Power transformer stores up oil tank capsule automatic charging leak hunting device |
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| CN113932992A (en) * | 2020-07-13 | 2022-01-14 | 特变电工智能电气有限责任公司 | Transformer oil static pressure device and transformer system |
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| CN114323503A (en) * | 2021-11-25 | 2022-04-12 | 国网湖南省电力有限公司 | Integral sealing test detection method for oil-immersed transformer |
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