CN105047377B - A kind of overall vacuum extractor of power transformer - Google Patents
A kind of overall vacuum extractor of power transformer Download PDFInfo
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- CN105047377B CN105047377B CN201510555603.2A CN201510555603A CN105047377B CN 105047377 B CN105047377 B CN 105047377B CN 201510555603 A CN201510555603 A CN 201510555603A CN 105047377 B CN105047377 B CN 105047377B
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- 238000005086 pumping Methods 0.000 claims abstract description 64
- 239000002775 capsule Substances 0.000 claims abstract description 22
- 230000000694 effects Effects 0.000 claims abstract description 9
- 230000009471 action Effects 0.000 claims description 23
- 238000007789 sealing Methods 0.000 claims description 6
- 239000004519 grease Substances 0.000 claims description 3
- 230000029058 respiratory gaseous exchange Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 7
- 238000009413 insulation Methods 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 67
- 230000008859 change Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000015927 pasta Nutrition 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Housings And Mounting Of Transformers (AREA)
- Transformer Cooling (AREA)
Abstract
The invention discloses a kind of overall vacuum extractor of power transformer, including transformer body, body oil conservater, capsule, there is load oil conservater, transformer body is connected with body oil conservater, capsule has load oil conservater to be connected with the load tap changer oil chamber in transformer body in body oil conservater；The exhaust ports of body oil conservater are provided with the control assembly for reinstalling air relief cock under vacuum state for realizing, the control assembly has the chamber that body oil conservater is connected before air relief cock is put down, the vacuum-pumping pipeline of chamber first；Also include being used for carrying the pipeline assembly that oil conservater, load tap changer oil chamber and capsule carry out vacuumize process to having.The present invention utilizes the exhaust outlet of body oil conservater and coordinates the control assembly, realize and recover under not vacuum breaker state, oiling can be carried out in the state of air is not exposed to completely, allow insulating oil not ingress of air completely, the gas content in transformer oil is greatly reduced, the insulation effect of inside transformer is improved.
Description
Technical field
The present invention relates to a kind of electric power tool, more particularly to a kind of overall vacuum extractor of power transformer.
Background technology
Large-scale power transformer as electric energy conveying, conversion maincenter equipment, played an important role in power network, its
Install and maintenance craft quality is brought to the operation conditions after putting equipment in service and significantly affected, be directly connected to the safety and stability of equipment
Operation.
Vacuumize and oiling is as transformer installation important procedure together with during overhaul, the quality of its technique is direct
It is closely related with the insulating properties of inside transformer.Vacuumize is in order to by inside inside transformer and transformer insulation oil
Gas is separated, and improves built-in electrical insulation, main transformer vacuumizing effect is not good causes a large amount of air volumes to be trapped in transformation for prevention
Inside device and inside transformer insulation oil, a series of hair of main transformer decreasing insulating and Accident of Transformer will be caused
It is raw.
According to《The great anti-accident of 18 power networks of State Grid Corporation of China is arranged》Apply provision 9.2.2.1 bars regulation：It is new install and
Transformer after overhaul should be vacuumized in strict accordance with relevant standard or producer's regulation, vacuum oil and hot-oil circulation, vacuum
Degree, pumpdown time, oil injecting speed and hot-oil circulation time, temperature all should reach requirement.To the change using load ratio bridging switch
Depressor fuel tank should be vacuumized on request simultaneously, but should be noted that vacuumizing preceding application communicating pipe connects body and switch grease chamber.And
State Grid Corporation of China 110 (66) kV~500kV oil-filled transformers (reactor) inspection code Article 27 (three) is provided
110kV and the transformer of the above should use vacuum oil.Possess with oil conservater vacuum oil condition should be with oil conservater vacuum impregnating
Oil, but oil conservater should be opened with the isolating valve of the oil conservater UNICOM of collapsible bag, barrier film and load ratio bridging switch in itself, or with facing
While vacuumizing after Shi Lianguan is attached, in order to avoid collapsible bag, barrier film and loaded tap switch insulation tube are damaged.
Installed and overhaul process in the old large-scale 110kV transformers of existing majority, drained the oil to transformer, hang bell jar
Check that experiment falls after cover, need to vacuumized, oiling.But during transformer installation and the live vacuum pumping of overhaul,
Generally be not fully finished vacuumize oiling under conditions of vacuum breaker (generally will reach the ＇ of load tap changer oil chamber 2 in pasta
During top), as shown in figure 1, remove interim pipeline (＇ of communicating pipe 5), recover original pipeline, then only to the ＇ of body oil conservater 3 and
Its annex proceeds to vacuumize oiling.
When not being fully finished 3 ＇ vacuum oils of the ＇ of transformer body 1 and body oil conservater, (capsule type oil storage cabinet is generally firm
When crossing more than half) vacuum breaker again, the originally ＇ of capsule 4 is in deflated state, removes vaccum-pumping equipment and (remove the ＇ of communicating pipe 6, such as
Shown in Fig. 2), now, transformer can not be proceeded to vacuumize, such as proceeding to vacuumize will cause the ＇ of capsule 4 expansions broken
Split, can only merely oiling to suitable oil level.In addition, this time vacuum breaker low, air that also results in transformer oil storage internal vacuum
Into transformer body, reduction inside transformer insulation.
The content of the invention
The invention provides a kind of overall vacuum extractor of power transformer, the power transformer of prior art is which overcomed
Weak point present in vacuum extractor.
The technical solution adopted for the present invention to solve the technical problems is：A kind of overall vacuum extractor of power transformer,
Including transformer body, body oil conservater, capsule, there is load oil conservater, transformer body is connected with body oil conservater, and capsule is set
It is connected in body oil conservater, there is load oil conservater with the load tap changer oil chamber in transformer body；Body oil conservater
Exhaust ports are provided with the control assembly for reinstalling air relief cock under vacuum state for realizing, the control assembly has puts in air relief cock
The chamber of connection body oil conservater, the vacuum-pumping pipeline of chamber first before lower；Also include being used for having load oil conservater, having load
Oil cabinet of tap switches and capsule carry out the pipeline assembly of vacuumize process.
In one embodiment, the control assembly includes being installed on the exhaust ports and is formed with the control sheet of the chamber
Body and the exhaust outlet are coaxially disposed and activity is assemblied in the action bars for controlling body, and control body is communicated with its chamber
Blow vent, the blow vent connects first vacuum-pumping pipeline；Control is stretched out in one end sealing of action bars, and this is external, other end position
In in the chamber, the air relief cock is connected to the action bars other end with can departing from action bars.
In one embodiment, the pipeline assembly includes that connection is described load oil conservater or the load tap changer oil chamber
Second vacuum-pumping pipeline and the 3rd vacuum-pumping pipeline for connecting the capsule.
In one embodiment, the control body includes being installed on the exhaust ports and being communicated with the base of mouth, can fill
It is connected to the base with tearing open and surrounds the outer cover of the chamber, the blow vent is covered with outside, the action bars activity is assemblied in
Outer cover；The air relief cock is bolt, and the connected entrance of the base is provided with the internal thread being adapted with bolt.
In one embodiment, the other end of the action bars is connected with bolt collar, and equipped with magnetic part, utilizes the magnetic part
Adsorb the air relief cock.
In one embodiment, first vacuum-pumping pipeline, the second vacuum-pumping pipeline, it is respectively mounted in the 3rd vacuum-pumping pipeline
There is the first valve, and be connected on a main pipe rail, the main pipe rail total valve is installed.
In one embodiment, first vacuum-pumping pipeline, the second vacuum-pumping pipeline, the 3rd vacuum-pumping pipeline side are also distinguished
The second valve is connected with, and the second valve is located at the rear side of first valve；Second vacuum-pumping pipeline and the 3rd takes out true
The second valve on blank pipe road has been also respectively connected with respirator.
In one embodiment, first, second, third vacuum-pumping pipeline includes being provided with first valve, the respectively
Two valves and the fixation pipeline and flexible pipe for connecting the main pipe rail, the two ends of the flexible pipe of first vacuum-pumping pipeline are respectively adopted
Flange is secured to pipeline and is connected with the control assembly, the two ends of the flexible pipe of the second vacuum-pumping pipeline be respectively adopted flange with
It fixes pipeline has load oil conservater or load tap changer oil chamber to be connected with described, the two ends of the flexible pipe of the 3rd vacuum-pumping pipeline
Flange is respectively adopted it is secured to pipeline and is connected with the capsule.
In one embodiment, the base is mutually threadedly coupled with the outer cover, and the outer cover is separated after base, using a capping
It is threadedly connected to the base；The action bars is threadedly connected to the outer cover.
In one embodiment, the main pipe rail is also equipped with non-return valve and vacuum meter.
Compared to prior art, the invention has the advantages that：
Ith, the present invention utilizes the exhaust outlet of body oil conservater and coordinates the control assembly, realizes under not vacuum breaker state
Recover, oiling can be carried out in the state of air is not exposed to completely, allow insulating oil not ingress of air completely, greatly reduce change
Gas content in depressor oil, substantially increases the insulation effect of inside transformer, reduces accident rate, and simple to operate；
IIth, carry out entirety present invention utilizes the peak of transformer to vacuumize, the process vacuumized is covered entirely
Process terminates up to oiling, substantially increases the vacuum in transformer；
IIIth, first, second, third vacuum-pumping pipeline can be vacuumized simultaneously, and can be respectively controlled and opened
Stop, it is easy to operate, reliable；
IVth, the present invention farthest can carry out vacuumizing oiling using the original pipeline of transformer, reduce because of overlap joint
Interim pipeline and the man power and material consumed；
Vth, present invention utilizes the pipeline all having on most of transformers, thus the present invention is to nearly all old type
Transformer has general applicability；
VIth, non-return valve is installed on main pipe rail, prevented because power phase mistake causes air to enter inside transformer.
The present invention is described in further detail below in conjunction with drawings and Examples；But a kind of power transformer of the present invention
Overall vacuum extractor is not limited to embodiment.
Brief description of the drawings
Fig. 1 is that the power transformer of prior art is vacuumized and oiling view one；
Fig. 2 is that the power transformer of prior art vacuumizes meter oiling view two；
Fig. 3 is the structural representation of the present invention；
Fig. 4 is the structural representation of the control assembly of the present invention；
Fig. 5 is the structural representation of the pipeline assembly (containing the first vacuum-pumping pipeline, main pipe rail etc.) of the present invention.
Embodiment
Embodiment, is referred to shown in Fig. 3, Fig. 4, a kind of overall vacuum extractor of power transformer of the invention, including is become
Depressor body 1, body oil conservater 3, capsule 4, there is load oil conservater 5, transformer body 1 is using communicating pipe 11 and body oil conservater 3
It is connected, capsule 4 has in body oil conservater 3 and carries oil conservater 5 using communicating pipe 51 with having load point in transformer body 1
Switch grease chamber 2 is connect to be connected.Control assembly 6 is installed at the exhaust outlet 31 of body oil conservater 3, the control assembly 6 is used to realize
The air relief cock of body oil conservater 3 is reinstalled under vacuum state, makes the exhaust outlet 31 of its plugging ontology oil conservater 3, the control assembly 6 has
There is the chamber 66 that body oil conservater 3 is connected before air relief cock is put down, the chamber 66 connects the first vacuum-pumping pipeline 7；Also include using
In to there is the pipeline assembly for carrying oil conservater 5, load tap changer oil chamber and the progress vacuumize process of capsule 4.
In the present embodiment, as shown in figure 4, the control assembly 6 includes being installed at the exhaust outlet 31 and being formed
The control body of chamber 66 is stated, is coaxially disposed with the exhaust outlet 31 and activity is assemblied in the action bars 63 for controlling body, control
Body is communicated with the blow vent of its chamber 66, and the blow vent connects first vacuum-pumping pipeline 7 using flange 102；Operation
Control is stretched out in one end sealing of bar 63, and this is external, and the other end is located in the chamber 66, and the air relief cock can depart from action bars 63
Ground is connected to the other end of action bars 63.
The control body specifically includes the base 61, dismantledly for being installed at the exhaust outlet 31 and being communicated with mouth
It is connected to the base 61 and surrounds the outer cover 62 of the chamber 66, outer cover 62 is provided with the blow vent, the activity of action bars 63
Be assemblied in the top of outer cover 62, the top of outer cover 62 is specific to be set with sealing ring 67, and lock and have tight loop 68, to action bars 63 with
Gap between outer cover 62 is sealed, in addition, between the base 61 and body oil conservater 3, and outer cover 62 and base 61
Between be similarly combined with sealing ring, anti-outside air enters the chamber 66.The air relief cock is specially bolt 32, the bottom
The connected entrance of seat 61 is provided with the internal thread being adapted with bolt.
In the present embodiment, the other end of the action bars 63 is connected with bolt collar 64, and equipped with magnetic part 65, the magnetic
Part 65 is specially strong magnets, and the air relief cock is adsorbed using the magnetic part 65, i.e., described bolt 32, is set with outside the bolt 32
Sealing ring.
In the present embodiment, the exhaust outlet 31 that the base 61 is threadedly connected to the body oil conservater 3 goes out, the outer cover 62
The base 61 is threadedly connected to, and the outer cover 62 is separated after base 61, and the base 61 is connected to using a closure threads；
The action bars 63 is threadedly connected to the outer cover 62.
In the present embodiment, the pipeline assembly include connection it is described have carry (or the load tap changer oil chamber of oil conservater 5
2) the second vacuum-pumping pipeline 8 and the 3rd vacuum-pumping pipeline 9 for connecting the capsule 4, and first vacuum-pumping pipeline 7, the
First valve C1, C2, C3 is separately installed with two vacuum-pumping pipelines 8, the 3rd vacuum-pumping pipeline 9, and is connected to a house steward
Total valve D is installed on road 10, the main pipe rail 10.
In the present embodiment, first vacuum-pumping pipeline 7, the second vacuum-pumping pipeline 8, the 3rd vacuum-pumping pipeline 9 are gone back sideways
Second valve B1, B2, B3 is connected to, and the second valve is located at the rear side of first valve；Second vacuum-pumping tube
Second valve B2, B3 in the vacuum-pumping pipeline 9 of road 8 and the 3rd has been also respectively connected with respirator.Here, first valve is defined
Side where main pipe rail described in neighbour is front side, accordingly, first valve away from the side where the main pipe rail then
For rear side.
In the present embodiment, as shown in figure 5, first vacuum-pumping pipeline 7, the second vacuum-pumping pipeline 8, the 3rd vacuum-pumping tube
Road 9 includes being provided with first valve, the second valve and the and of fixation pipeline 71,81,91 for connecting the main pipe rail 10 respectively
Flexible pipe, the two ends of the flexible pipe of first vacuum-pumping pipeline 7 are respectively adopted flange 102 and are secured to pipeline 71 and the control group
Part 6 is connected, and the two ends of the flexible pipe of the second vacuum-pumping pipeline 8 are respectively adopted flange 102 and are secured to pipeline 81 and described have load
Oil conservater 5 or load tap changer oil chamber 2 are connected, the two ends of the flexible pipe of the 3rd vacuum-pumping pipeline 9 be respectively adopted flange 102 with
It is fixed pipeline 91 and is connected with the capsule 4.
In the present embodiment, the main pipe rail is also equipped with non-return valve and vacuum meter 101, and vacuum meter 101 be installed on it is described
Total valve D rear side.It is front side that total valve D, which is defined, close to the side of vacuum pumping pump, and sides of the total valve D away from vacuum pumping pump is then
For rear side.
A kind of overall vacuum extractor of power transformer of the present invention, its course of work is as follows：
Main pipe rail 10 is connected with vacuum pumping pump, first valve C1, C2, C3 and total valve D is opened, the second valve is closed
B1, B2, B3, are vacuumized using vacuum pumping pump；When vacuum reaches to a certain degree when (133Pa), total valve D is closed,
12 hours are stood, observation vacuum meter atmospheric pressure value keeps situation, judge to confirm have ne-leakage in device；
Confirm after ne-leakage, carrying out oiling to load ratio bridging switch and transformer body 1 respectively, (load ratio bridging switch is with becoming
The oil of depressor body 1 is opened, independent oiling, according to vacuum and can have the oil level indicator for carrying oil conservater 5 to control vacuum during oiling
Degree and injection flow, after oiling to suitable oil level, stop oiling), during load ratio bridging switch oiling to correct position, close first
Valve C2, isolates with pumped vacuum systems, opens the second valve B2, reinstalls respirator；First valve C1, C3 is simultaneously closed off, is anti-
Only capsule 4 ruptures, and should first close the first valve C1 and close the first valve C3 again；Body is reinstalled under vacuum conditions with control assembly 6
The air relief cock (i.e. described bolt 32) of oil conservater 3, opens the second valve B3, vacuum breaker reinstalls respirator afterwards.
Above-mentioned control assembly 6 under vacuum conditions reinstalls air relief cock (i.e. described bolt 32) exhaust of body oil conservater 3
The operating process of mouth 31 is as follows：When body oil conservater 3 starts to vacuumize, bolt 32 is adsorbed in bolt collar 64 by magnetic part 65
In, action bars 63 is pulled to highest point (being screwed), is vacuumized.When the vacuum pumping is ended, the first valve C1, rotation are closed
Action bars 63 makes it downwards, and bolt 32 is slowly screwed in the connected entrance of base 61.The second valve B2 vacuum breakers are then turned on, are torn open
Except outer cover 62, reinstall capping (base 61 is stayed on body oil conservater 3).
The present invention utilizes the air relief cock of body oil conservater 3, design for the first vacuum-pumping pipeline 7 uniquely overlapped temporarily
Go out the control assembly 6, realization reinstalls air relief cock under vacuum conditions, and remove the first vacuum-pumping pipeline 7 overlapped temporarily and
Not vacuum breaker, so as to allow insulating oil not ingress of air completely, greatly reduces the gas content in transformer oil, improves transformation
Device built-in electrical insulation, reduces accident rate.
Because transformer is different, therefore, the present invention to first vacuum-pumping pipeline 7, the second vacuum-pumping pipeline 8,
It is to include fixed pipeline and flexible pipe (band steel ring) two parts that 3rd vacuum-pumping pipeline 9, which is separately designed, and flexible pipe two ends utilize flange
It is attached, the length of flexible pipe can specifically be set according to actual conditions.
Above-described embodiment is only used for further illustrating a kind of overall vacuum extractor of power transformer of the present invention, but this hair
It is bright to be not limited to embodiment, any simple modification that every technical spirit according to the present invention is made to above example, etc.
With change and modification, each fall within the protection domain of technical solution of the present invention.
Claims (8)
1. a kind of overall vacuum extractor of power transformer, including transformer body, body oil conservater, capsule, there is load oil conservater,
Transformer body is connected with body oil conservater, and capsule has in load oil conservater and transformer body in body oil conservater
Load tap changer oil chamber is connected；It is characterized in that：The exhaust ports of body oil conservater are provided with for realizing vacuum state
Under reinstall the control assembly of air relief cock, the control assembly has the chamber that body oil conservater is connected before air relief cock is put down, the chamber
Room connects the first vacuum-pumping pipeline；Also include being used for thering is load oil conservater, load tap changer oil chamber and capsule to vacuumize
The pipeline assembly of processing；
The control assembly includes being installed on the exhaust ports and is formed with the control body and the exhaust outlet of the chamber
It is coaxially disposed and activity is assemblied in the action bars for controlling body, control body is communicated with the blow vent of its chamber, the blow vent
Connect first vacuum-pumping pipeline；Control is stretched out in one end sealing of action bars, and this is external, and the other end is located in the chamber, institute
State air relief cock and be connected to the action bars other end with can departing from action bars；
The pipeline assembly includes having the second vacuum-pumping pipeline for carrying oil conservater or the load tap changer oil chamber described in connection
With the 3rd vacuum-pumping pipeline for connecting the capsule.
2. the overall vacuum extractor of power transformer according to claim 1, it is characterised in that：The control body includes
It is installed on the exhaust ports and is communicated with the base of mouth, be dismantledly connected to the base and surrounds the outer of the chamber
Cover, is covered with the blow vent, the action bars activity is assemblied in outer cover outside；The air relief cock is bolt, the company of the base
Port is provided with the internal thread being adapted with bolt.
3. the overall vacuum extractor of power transformer according to claim 1 or 2, it is characterised in that：The action bars
The other end is connected with bolt collar, and equipped with magnetic part, the air relief cock is adsorbed using the magnetic part.
4. the overall vacuum extractor of power transformer according to claim 1, it is characterised in that：First vacuum-pumping tube
Road, the second vacuum-pumping pipeline, it is separately installed with the first valve in the 3rd vacuum-pumping pipeline, and is connected to a main pipe rail, should
Total valve is installed on main pipe rail.
5. the overall vacuum extractor of power transformer according to claim 4, it is characterised in that：First vacuum-pumping tube
Road, the second vacuum-pumping pipeline, the 3rd vacuum-pumping pipeline side have been also respectively connected with the second valve, and the second valve is located at described the
The rear side of one valve；The second valve in second vacuum-pumping pipeline and the 3rd vacuum-pumping pipeline has been also respectively connected with breathing
Device.
6. the overall vacuum extractor of power transformer according to claim 5, it is characterised in that：Described first, second,
Three vacuum-pumping pipelines include being provided with first valve, the second valve respectively and connect the fixation pipeline of the main pipe rail and soft
Pipe, the two ends of the flexible pipe of first vacuum-pumping pipeline are respectively adopted flange and are secured to pipeline to be connected with the control assembly
Connect, the two ends of the flexible pipe of the second vacuum-pumping pipeline are respectively adopted flange and are secured to pipeline and described have load oil conservater or have load point
Connect switch grease chamber to be connected, the two ends of the flexible pipe of the 3rd vacuum-pumping pipeline are respectively adopted flange and are secured to pipeline and the capsule
It is connected.
7. the overall vacuum extractor of power transformer according to claim 2, it is characterised in that：The base with it is described outer
Cover is mutually threadedly coupled, and the outer cover is separated after base, and the base is connected to using a closure threads；The action bars screw thread connects
It is connected to the outer cover.
8. the overall vacuum extractor of power transformer according to claim 4, it is characterised in that：The main pipe rail is also installed
There are non-return valve and vacuum meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510555603.2A CN105047377B (en) | 2015-09-02 | 2015-09-02 | A kind of overall vacuum extractor of power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510555603.2A CN105047377B (en) | 2015-09-02 | 2015-09-02 | A kind of overall vacuum extractor of power transformer |
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| Publication Number | Publication Date |
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| CN105047377A CN105047377A (en) | 2015-11-11 |
| CN105047377B true CN105047377B (en) | 2017-08-04 |
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| CN201510555603.2A Active CN105047377B (en) | 2015-09-02 | 2015-09-02 | A kind of overall vacuum extractor of power transformer |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106373730A (en) * | 2016-11-25 | 2017-02-01 | 山东电力设备有限公司 | Novel transformer oil tank air-bleed structure |
| JP7049837B2 (en) * | 2018-01-23 | 2022-04-07 | 東芝産業機器システム株式会社 | Oil-filled static induction device |
| CN111810466B (en) * | 2020-07-04 | 2022-07-22 | 中国石油天然气集团有限公司 | Oil injection device and oil injection process |
| CN112201462B (en) * | 2020-08-31 | 2022-03-18 | 国家电网有限公司 | Special tool for multipoint vacuum pumping of super-huge transformer |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09266117A (en) * | 1996-03-28 | 1997-10-07 | Toshiba Fa Syst Eng Kk | Oil-immersed electric machine and oiling method for oil-immersed electric machine |
| CN2521724Y (en) * | 2002-01-26 | 2002-11-20 | 新疆特变电工股份有限公司 | Vacuum oil storing cabinet |
| CN201444433U (en) * | 2009-05-13 | 2010-04-28 | 山东鲁能泰山电力设备有限公司 | Oil storage tank of oil immersed transformer |
| CN101944420A (en) * | 2010-09-14 | 2011-01-12 | 保定天威集团有限公司 | Transformer integral vacuum oiling device and method |
| JP2013058527A (en) * | 2011-09-07 | 2013-03-28 | Meiden T&D Co Ltd | Transformer |
| CN202771915U (en) * | 2012-09-14 | 2013-03-06 | 保定天威集团有限公司 | Capsule type oil conservator vacuumizing structure |
| CN204553859U (en) * | 2015-03-30 | 2015-08-12 | 安徽中晶光技术股份有限公司 | A kind of novel evacuated valve arrangement |
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