CN113932992A - Transformer oil static pressure device and transformer system - Google Patents
Transformer oil static pressure device and transformer system Download PDFInfo
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- CN113932992A CN113932992A CN202010668327.1A CN202010668327A CN113932992A CN 113932992 A CN113932992 A CN 113932992A CN 202010668327 A CN202010668327 A CN 202010668327A CN 113932992 A CN113932992 A CN 113932992A
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- 230000003068 static effect Effects 0.000 title claims abstract description 50
- 238000012360 testing method Methods 0.000 claims abstract description 35
- 239000007789 gas Substances 0.000 claims description 31
- 230000002706 hydrostatic effect Effects 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 7
- 238000000926 separation method Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000007599 discharging Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- 239000000243 solution Substances 0.000 description 1
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L13/00—Devices or apparatus for measuring differences of two or more fluid pressure values
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L15/00—Devices or apparatus for measuring two or more fluid pressure values simultaneously
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
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Abstract
The invention discloses a transformer oil static pressure device which comprises a base (7) and a shell (6) arranged on the base, wherein an inflation inlet and a test interface are formed in the shell, an air bag (4) is arranged in the shell, the inflation inlet is communicated with the interior of the air bag and is used for filling compressed gas into the air bag, the shape of the fully-filled air bag is matched with the shape of an inner cavity of the shell, the volume of the fully-filled air bag is larger than or equal to the volume of the inner cavity of the shell, a first valve (3) is arranged on the inflation inlet and is used for controlling the opening and closing of the inflation inlet, and a second valve (11) is arranged on the test interface and is used for controlling the opening and closing of the test interface. Correspondingly, a transformer system is also disclosed. The device can replace a tank crane to carry out static pressure leakage detection test on the transformer, does not need to be hung on the tank crane, and can realize oil-gas separation.
Description
Technical Field
The invention specifically belongs to the technical field of transformers, and particularly relates to a transformer oil static pressure device and a transformer system comprising the same.
Background
The high-capacity transformer of 110kV and above all need carry out the oil static pressure seal test according to the national standard requirement after the vacuum oiling, and this type of transformer voltage level is high simultaneously, and the structure is complicated, for guaranteeing test is qualified and long-term reliable operation, must carry out the oil static pressure leak test work, but to the high-voltage transformer, can not adopt the gas of certain pressure directly to act on the transformer oil face again and suppress to the appearance of the product integration or partial discharge nonconforming problem that gas and air content in the oil lead to too high.
For a long time, the high-voltage transformer oil static pressure process in the transformer industry basically adopts a static pressure oil tank with a certain height erected in a workshop or a temporary oil tank is lifted to a certain height by a travelling crane and then a static pressure leak detection test is carried out on the whole transformer. However, after the suspension tank is arranged in a workshop, the matched fire-fighting facilities are strict and the cost is extremely high. In addition, at present, according to the requirements of national fire safety regulations, a suspension tank is not allowed to be designed in a transformer production workshop, and any temporary oil tank is not allowed to be placed, so that for a transformer manufacturer, a device capable of replacing the suspension tank to realize transformer oil static pressure after the suspension tank is cancelled in the workshop is greatly needed, and otherwise, the normal production of the transformer is seriously influenced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a transformer oil static pressure device and a transformer system comprising the same, aiming at the defects in the prior art, the transformer oil static pressure device can replace a hanging tank to carry out a static pressure leakage detection test on a transformer, does not need to be hung, and can realize oil-gas separation.
In order to solve the technical problems, the invention adopts the following technical scheme:
a transformer oil static pressure device comprises a base and a shell arranged on the base, wherein an inflation inlet and a test interface are arranged on the shell, an air bag is arranged in the shell,
the inflation inlet is communicated with the interior of the air bag and is used for inflating compressed gas into the air bag, the shape of the fully inflated air bag is matched with the shape of the inner cavity of the shell, and the volume of the fully inflated air bag is more than or equal to that of the inner cavity of the shell,
the inflation inlet is provided with a first valve for controlling the opening and closing of the inflation inlet,
and the test interface is provided with a second valve for controlling the opening and closing of the test interface.
Preferably, the shell is also provided with an air release opening,
the air release port is provided with a third valve for controlling the opening and closing of the air release port,
the shell is provided with a first pressure gauge for detecting the pressure inside the shell,
and a second pressure gauge is also arranged on the inflation inlet and used for detecting the pressure inside the air bag.
Further, the device also comprises a gas source,
the gas source is communicated with the inflation port and is used for providing the compressed gas for the air bag.
Preferably, the compressed gas is compressed air or nitrogen, and the pressure range of the compressed gas is 0.1-0.6 MPa.
Further, the device still includes the level gauge, the level gauge sets up on the casing for detect the inside liquid level height of casing.
Preferably, the device further comprises a pressure-resistant tube,
the second valve is arranged at one end of the pressure pipe connected with the test interface,
and an L-shaped joint is arranged at the free end of the pressure pipe, and a fourth valve and a third pressure gauge are arranged on the L-shaped joint.
Preferably, the shell is a pressure-resistant sealed shell, and the interior of the shell can bear a full vacuum environment and a positive pressure of 0.2 Mpa.
Preferably, the housing is cylindrical,
the diameter of the fully inflated air bag is more than 40mm larger than the diameter of the shell, and the length of the air bag is more than 80mm longer than the length of the shell.
Preferably, wheels are arranged below the base.
The invention also provides a transformer system, which comprises a transformer main body and the transformer oil static pressure device,
an 80 butterfly valve is arranged on the transformer main body, and a test interface in the transformer oil static device is communicated with the 80 butterfly valve.
The oil-gas separation is realized by the air bag, and the transmission of oil pressure is realized by filling compressed gas into the air bag, so that proper oil static pressure can be applied to the transformer main body, the oil static pressure leakage detection work can be realized, the requirement of high-capacity transformer oil static pressure can be met, the detection is convenient and quick, the difficult problem which is required to be faced by transformer plant construction is solved, and the high efficiency and convenience of oil static pressure detection in production are realized.
Drawings
FIG. 1 is a schematic structural diagram of a transformer hydrostatic device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a transformer hydrostatic device connected to a transformer body according to an embodiment of the present invention.
In the figure: 1-a first pressure gauge; 2-a second pressure gauge; 3-a first valve; 4-air bag; 5-a third valve; 6-a shell; 7-a base; 8-wheels; a 9-L type linker; 10-a fourth valve; 11-a second valve; 12-a pressure resistant pipe; 13-a liquid level meter; 14-a third pressure gauge; 15-main manifold valve; 16-80 butterfly valves; 17-oil filling and draining valve; 18-bottom pressure gauge; 19-an oil conservator; 20-transformer body.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of the present invention.
In the description of the present invention, it should be noted that the indication of orientation or positional relationship, such as "on" or the like, is based on the orientation or positional relationship shown in the drawings, and is only for convenience and simplicity of description, and does not indicate or imply that the device or element referred to must be provided with a specific orientation, constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected," "disposed," "mounted," "fixed," and the like are to be construed broadly, e.g., as being fixedly or removably connected, or integrally connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art.
Aiming at the condition that a static pressure hanging tank is not allowed to be placed in a current transformer factory building, the inventor develops an oil static pressure device which can be directly placed on the ground of a workshop and can move and has a structure of completely separating oil from gas through a large number of analysis research and verification, the oil static pressure requirement of transformers with various voltage grades can be met, and through the use of the static pressure device, the problem that oil static pressure processes can still be conveniently carried out on various transformers under the condition that the static pressure hanging tank is not available in a transformer workshop can be effectively solved, so that the production and manufacturing of transformer products are met, and the problem that an oil tank cannot be arranged in the workshop during the design and construction of the factory building can be solved; meanwhile, the problems of transformer product test breakdown and partial discharge caused by excessive dissolved gas in oil and overhigh gas content due to contact of gas and oil surface can be solved.
The invention provides a transformer oil static pressure device, which comprises a base and a shell arranged on the base, wherein the shell is provided with an inflation inlet and a test interface, the shell is internally provided with an air bag,
the inflation inlet is communicated with the interior of the air bag and is used for inflating compressed gas into the air bag, the shape of the fully inflated air bag is matched with the shape of the inner cavity of the shell, and the volume of the fully inflated air bag is more than or equal to that of the inner cavity of the shell,
the inflation inlet is provided with a first valve for controlling the opening and closing of the inflation inlet,
and the test interface is provided with a second valve for controlling the opening and closing of the test interface.
Correspondingly, the invention also provides a transformer system, which comprises a transformer main body and the transformer oil static pressure device,
an 80 butterfly valve is arranged on the transformer main body, and a test interface in the transformer oil static device is communicated with the 80 butterfly valve.
Example 1:
as shown in fig. 1, the present embodiment discloses a transformer oil hydrostatic device, which includes a base 7 and a housing 6 disposed on the base 7. The shell 6 is provided with an air charging port and a test interface.
An air bag 4 is suspended in the shell 6, the inner cavity of the shell is completely isolated from the interior of the air bag, an inflation inlet is communicated with the interior of the air bag 4, a first valve 3 is arranged on the inflation inlet, and the first valve 3 is used for controlling the opening and closing of the inflation inlet. When the first valve 3 controls the inflation inlet to be opened, compressed gas can be filled into the air bag 4 through the inflation inlet, the shape of the fully filled air bag 4 is consistent with the shape of the inner cavity of the shell, and the volume of the air bag is larger than or equal to the volume of the inner cavity of the shell.
The testing interface is used for being connected with the transformer main part, is equipped with second valve 11 in the position department of testing interface, and second valve 11 is used for controlling opening and close of testing interface.
Optionally, the inflation inlet is disposed at the top of the housing, and the testing interface is disposed at the bottom of the housing.
In this embodiment, the casing 6 is a pressure-resistant sealed casing, and the inside of the casing can withstand a full vacuum environment and a positive pressure of 0.2 Mpa. The shell 6 may be made of steel, and the inner wall and the outer wall of the shell may be subjected to rust removal and corrosion prevention treatment, for example, the inner wall of the shell may be coated with a special inner wall paint resistant to transformer oil, and the outer wall of the shell may be coated with a finish paint.
Optionally, the housing 6 is cylindrical, and has a length of 2000-3000 mm and a diameter of 800-1000 mm. The shell 6 is horizontally arranged on the base 7, namely the left side surface and the right side surface of the shell are circular end surfaces, and the arc-shaped bottom of the shell is welded on the base 7 through a connecting piece.
Optionally, wheels 8 are provided under the base 7 to facilitate easy movement of the device to a desired location.
In this embodiment, the airbag 4 has transformer oil resistance, and the airbag 4 is made of oil-resistant rubber. When the housing is cylindrical, the full-inflated shape of the airbag 4 is also cylindrical, and the full-inflated diameter of the airbag 4 is at least 40mm larger than the diameter of the housing 6, and the full-inflated diameter of the airbag 4 is at least 80mm longer than the length of the housing, so that the airbag 4 can be repeatedly inflated and deflated with clean compressed gas without damaging the airbag 4, and the service life of the airbag 4 can be prolonged.
Optionally, the device further comprises a gas source, which is in communication with the inflation port and is configured to provide a compressed gas to the interior of the airbag 4 through the inflation port. In this embodiment, the compressed gas may be compressed air or nitrogen, and the pressure range is 0.1-0.6 MPa.
Wherein, the shell is also provided with an air release port which is used for releasing the air in the shell 6. And a third valve 5 is arranged on the air release port, and the third valve 5 is used for controlling the opening and closing of the air release port. In this embodiment, the vent may be provided at the top of the housing 6.
Optionally, the shell is further provided with a first pressure gauge 1 for detecting the pressure inside the shell, in this embodiment, the first pressure gauge 1 is arranged at the top of the shell; and a second pressure gauge 2 is also arranged on the inflation inlet and used for detecting the pressure inside the air bag 4.
In this embodiment, the apparatus further includes a liquid level meter 13, and the liquid level meter 13 may be disposed on a side surface outside the housing, and is configured to detect a liquid level height of the transformer oil inside the housing.
In this embodiment, the apparatus further includes a pressure-resistant pipe 12, and the second valve 11 is disposed at one end of the pressure-resistant pipe connected to the test interface, and is configured to control opening and closing of the pressure-resistant pipe 12, so as to control opening and closing of the test interface. The free end of the pressure pipe is provided with an L-shaped joint 9 (specifically, a one-to-three joint) for connecting a transformer. And a fourth valve 10 and a third pressure gauge 14 are arranged on the L-shaped joint 9, the fourth valve 10 is used for rapid exhaust, and the third pressure gauge 14 is used for pressure detection of the joint position.
In this embodiment, the pressure-resistant pipe 12 is a hose. The L-shaped joint 9 is connected with the pressure pipe 12 by a flange.
When the device is used, the transformer oil static pressure device is filled with oil and is hung at a proper position, the pressure-resistant pipe 12 is connected with a main connecting pipe of a transformer or a bypass connecting pipe below a corrugated oil conservator, then the air bag 4 is pressurized through the inflation inlet, the pressure in the shell 6 is transmitted to the transformer main body to apply proper oil static pressure, so that the requirement of the transformer oil static pressure is met, after the oil static pressure test is finished, a valve at the top of the transformer tank is closed, the air pressure in the device is relieved, and then the connecting pipeline between the pressure-resistant pipe and the transformer main body is detached.
Specifically, when the transformer needs to be subjected to an oil static pressure test, the device is moved to the vicinity of the transformer, then a liquid level meter 13 is checked, after the oil level in the shell is determined to be at a high level, the first valve 3 and the third valve 5 are opened slowly, qualified transformer oil is injected into the shell 6 through the second valve 11 until the transformer oil overflows from the third valve 5, then the oil injection is stopped, then the second valve 11, the third valve 5 and the first valve 3 are closed, then the pressure-resistant pipe 12 is connected to an 80 butterfly valve 16 at the top of the transformer tank through an L-shaped joint (as shown in figure 2), then the second valve 11 is opened, the air bag 4 is pressurized, the pressure passes through the device through the expansion pressure of the air bag 4, when the transformer oil in the pressure-resistant pipe 12 is transmitted to the L-shaped joint 9 and the pressure is detected to reach about 0.01MPa, the fourth valve 10 on the joint is opened for complete air exhaust, and opening a valve at the top of the transformer tank, and transmitting the pressure to the interior of the transformer so as to realize the static pressure process of the transformer.
Therefore, the transformer oil static pressure device in the embodiment is an oil static pressure device with a movable integrated oil-gas separation structure, and can be directly placed on the ground of a workshop in the transformer oil static pressure leakage test process.
The device in the embodiment has the functions of vacuum oil injection, oil-gas separation, inflation and pressurization, oil return and oil discharge, oil level observation, simultaneous pressurization and rapid movement of a pair of multiple transformers and the like. Meanwhile, the processing is simple, the operation is convenient, the requirement of the oil static pressure of a plurality of high-capacity transformers can be effectively met, the difficult problem that the factory building must face is solved, and the oil static pressure is efficient and convenient in production.
Example 2:
as shown in fig. 2, the present embodiment provides a transformer system, which includes a transformer body 20, and the transformer oil hydrostatic device of embodiment 1, wherein the transformer body has an 80 butterfly valve 16, and a test interface in the transformer oil hydrostatic device is communicated with the 80 butterfly valve 16. Specifically, the transformer oil hydrostatic unit is integrally connected to the transformer body 20 through an L-shaped joint at the end of the pressure pipe.
The oil static pressure process by adopting the oil static pressure device is as follows:
1. closing a main connecting pipe valve 15 communicated between an oil conservator 19 of the transformer and a transformer main body 20, installing a bottom end pressure gauge 18 at the end part of an oil injection and discharge valve 17, installing an L-shaped joint 9 at the end part of a pressure pipe 12 of a static pressure device on an 80 butterfly valve 16 at the top of a transformer box and sealing the L-shaped joint, then opening a second valve 11, introducing clean compressed air into an air bag 4 through an air source until a first pressure gauge 1 shows that the pressure is not more than 0.05MPa, and slowly opening a fourth valve 10 after a third pressure gauge 14 shows that the pressure is close to 0.01MPa so as to completely exhaust the gas in the pressure pipe 12 and then closing the fourth valve 10;
2. opening an 80 butterfly valve 16 at the top of the transformer main body, an oil filling and discharging valve 17 at the bottom of the transformer main body and a first valve 3 on the device, inflating clean compressed air into an air bag 4 to press the transformer main body, recording the pressure of a bottom pressure gauge 18 at the oil filling and discharging valve 17 at the bottom during pressing, adding the height pressure from the oil surface to the oil discharging valve after the pressure at the position reaches the oil surface of an oil storage cabinet 19 and applying 0.03MPa (certainly, the height pressure from the oil surface to the oil discharging valve can be added after the pressure of a pressure gauge at the top of the transformer main body reaches the oil surface of the oil storage cabinet and applying 0.03 MPa), closing the first valve 3, and stopping continuous inflation and pressing;
3. checking whether the main body pressure of the oil hydrostatic device is basically consistent with the pressure of the air bag or not, and whether the box top pressure of the transformer is consistent with the main body pressure difference of the oil hydrostatic device or not and the pressure difference generated by the height difference of the first pressure gauge and the third pressure gauge or not;
4. pressing by using the oil hydrostatic device, observing the change of an oil level in the hydrostatic device and the change of a display value of a first pressure gauge 1 and a display value of a second pressure gauge 2 in the oil hydrostatic device in a hydrostatic process, and supplementing oil into the shell of the oil hydrostatic device when the oil level is too low until the oil hydrostatic device is filled with oil to continue oil hydrostatic;
5. checking that the sealing surfaces of the oil static pressure device and the transformer and the pipe joints are reliable in sealing and free of leakage, and then maintaining for 24 hours to finish the process;
7. after the pressurization is finished, the 80 butterfly valve 16 at the top of the tank of the transformer main body is closed, the first valve 3 of the static pressure device is slowly opened until the first pressure gauge 1 is close to 0MPa, then the fourth valve 10 on the L-shaped joint is opened, the L-shaped joint 9 is removed, then the second valve 11 is closed, and the port of the L-shaped joint is placed in a sealing mode through a blind plate.
By using the device, the problem that the static oil pressure of the transformer main body of the corrugated oil conservator transformer can be carried out only by a method of driving and hanging the tank in the prior art is solved, the movable oil-gas separation oil storage device is simply moved to the lower part of the oil conservator of the transformer, then the connecting pipe is connected, the static oil pressure requirement of the transformer main body can be met by inflating the air bag, and the gas has no influence on the transformer oil.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A transformer oil static pressure device is characterized by comprising a base (7) and a shell (6) arranged on the base, wherein an inflation inlet and a test interface are arranged on the shell, an air bag (4) is arranged in the shell,
the inflation inlet is communicated with the interior of the air bag and is used for inflating compressed gas into the air bag, the shape of the fully inflated air bag is matched with the shape of the inner cavity of the shell, and the volume of the fully inflated air bag is more than or equal to that of the inner cavity of the shell,
the inflation inlet is provided with a first valve (3) for controlling the opening and closing of the inflation inlet,
and a second valve (11) is arranged on the test interface and used for controlling the opening and closing of the test interface.
2. The transformer hydrostatic unit of claim 1, wherein the housing further defines a relief port,
the air release port is provided with a third valve (5) for controlling the opening and closing of the air release port,
the shell is provided with a first pressure gauge (1) for detecting the pressure inside the shell,
and a second pressure gauge (2) is also arranged on the inflation inlet and used for detecting the pressure inside the air bag.
3. The transformer hydrostatic assembly of claim 2, further comprising a source of gas,
the gas source is communicated with the inflation port and is used for providing the compressed gas for the air bag.
4. The transformer hydrostatic unit of claim 3, wherein the compressed gas is compressed air or nitrogen, and the pressure is in the range of 0.1-0.6 MPa.
5. The transformer hydrostatic unit of claim 1, further comprising a level gauge (13) disposed on the housing for detecting a level of liquid inside the housing.
6. Transformer oil hydrostatic assembly according to claim 1, characterized in that it further comprises a pressure pipe (12),
the second valve (11) is arranged at one end of the pressure pipe connected with the test interface,
and an L-shaped joint is arranged at the free end of the pressure pipe, and a fourth valve (10) and a third pressure gauge (14) are arranged on the L-shaped joint.
7. The transformer hydrostatic unit of any one of claims 1-6, wherein the housing is a pressure-tight sealed housing capable of withstanding a full vacuum environment and a positive pressure of 0.2 MPa.
8. Transformer oil hydrostatic unit according to any one of claims 1 to 6, characterized in that the housing is cylindrical,
the diameter of the fully inflated air bag is more than 40mm larger than the diameter of the shell, and the length of the air bag is more than 80mm longer than the length of the shell.
9. Hydrostatic transformer oil pressure unit according to any of claims 1-6, characterized in that wheels (8) are provided under the base.
10. A transformer system comprising a transformer body, characterized by further comprising a transformer hydrostatic assembly according to any one of claims 1-9,
an 80 butterfly valve (16) is arranged on the transformer main body, and a test interface in the transformer oil static device is communicated with the 80 butterfly valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010668327.1A CN113932992A (en) | 2020-07-13 | 2020-07-13 | Transformer oil static pressure device and transformer system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010668327.1A CN113932992A (en) | 2020-07-13 | 2020-07-13 | Transformer oil static pressure device and transformer system |
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| CN113932992A true CN113932992A (en) | 2022-01-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117553998A (en) * | 2024-01-11 | 2024-02-13 | 南京立业电力变压器有限公司 | Static pressure constant voltage device and method for transformer |
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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 |
| CN107907278A (en) * | 2017-10-30 | 2018-04-13 | 广西电网有限责任公司电力科学研究院 | A kind of method for conducting leak test of power transformer oil conservater capsule |
| CN110146235A (en) * | 2019-05-27 | 2019-08-20 | 国网冀北电力有限公司廊坊供电公司 | Transformer suppresses leak test dedicated unit and suppresses leak test test method |
| CN110108423A (en) * | 2019-06-06 | 2019-08-09 | 中国启源工程设计研究院有限公司 | A kind of oil tank of transformer Oil Leakage Detecting method |
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| CN117553998A (en) * | 2024-01-11 | 2024-02-13 | 南京立业电力变压器有限公司 | Static pressure constant voltage device and method for transformer |
| CN117553998B (en) * | 2024-01-11 | 2024-03-26 | 南京立业电力变压器有限公司 | Static pressure constant voltage device and method for transformer |
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