CN220932339U - Test device for transformer oil tank - Google Patents

Abstract

The utility model provides a test device of a transformer oil tank, which comprises: the tank body is provided with a storage cavity, the tank body is provided with an air inlet and an oil outlet, the oil outlet is communicated with an oil tank of the transformer, and the air inlet is higher than the oil outlet; the air delivery assembly comprises an air supply piece and an air delivery pipeline, an air inlet of the air delivery pipeline is communicated with an air outlet of the air supply piece, and an air outlet of the air delivery pipeline is communicated with an air inlet of the tank body; the pressure regulating assembly comprises a pressure regulating part and a gas transmission reversing part, wherein the pressure regulating part and the gas transmission reversing part are both arranged on a gas transmission pipeline, and the gas transmission reversing part is provided with a first position and a second position. According to the technical scheme provided by the utility model, the problem that the structural strength of the transformer oil tank under the transformer oil pressure load cannot be obtained because the fatigue life of the transformer oil tank welded by steel in the related art is researched and the oil pressure in the transformer oil tank cannot be regulated, so that the transformer oil pressure load cannot be detected is solved.

Description

Test device for transformer oil tank

Technical Field

The utility model relates to the technical field of electrical equipment, in particular to a testing device for a transformer oil tank.

Background

Distribution transformers are static electric appliances in a distribution system, which transform alternating voltage and current according to the law of electromagnetic induction to transmit alternating electric energy. Some areas refer to power transformers of a voltage class below 35kV (most below 10 kV) as "distribution transformers", abbreviated as "distribution transformers". The place and place where the distribution transformer is installed are the transformer substations. The distribution transformer is preferably installed by column installation or open-air floor installation. Distribution transformers are important power equipment and are widely applied to various fields. There are many types of distribution transformers currently on the market, depending on the different operating characteristics and application requirements.

In the related art, transformer oil is led into a transformer oil tank, the transformer oil tank is usually formed by welding steel, and the structural strength of the transformer oil tank is further ensured by researching low-cycle fatigue behavior of various structural steels.

However, in the related art, the fatigue life of the transformer oil tank welded by steel is researched, the oil pressure in the transformer oil tank cannot be regulated, so that the transformer oil load cannot be detected, and the structural strength of the transformer oil tank under the transformer oil load cannot be obtained.

Disclosure of utility model

The utility model provides a testing device for a transformer oil tank, which aims to solve the problems that in the prior art, the fatigue life of the transformer oil tank welded by steel is researched, the oil pressure in the transformer oil tank cannot be regulated, the transformer oil pressure load cannot be detected, and the structural strength of the transformer oil tank under the transformer oil pressure load cannot be obtained.

The utility model provides a test device of a transformer oil tank, which comprises: the tank body is provided with a storage cavity for storing transformer oil, an air inlet and an oil outlet which are communicated with the storage cavity are arranged on the tank body, the oil outlet is communicated with an oil tank of the transformer, and the air inlet is higher than the oil outlet; the gas transmission assembly comprises a gas supply piece and a gas transmission pipeline, a gas inlet of the gas transmission pipeline is communicated with a gas outlet of the gas supply piece, and a gas outlet of the gas transmission pipeline is communicated with a gas inlet of the tank body; the pressure regulating assembly comprises a pressure regulating part and a gas transmission reversing part, wherein the pressure regulating part and the gas transmission reversing part are arranged on a gas transmission pipeline, the gas transmission reversing part is provided with a first position and a second position, compressed gas of the gas supply part is introduced into the storage cavity through the gas transmission pipeline when the gas transmission reversing part is positioned at the first position, and the compressed gas of the storage cavity is discharged to the outside of the test device of the transformer oil tank through the gas transmission pipeline when the gas transmission reversing part is positioned at the second position.

Further, the pressure regulating member includes a manual pressure reducing valve provided between the air supply member and the air inlet of the tank.

Further, the pressure regulating member further includes a filter pressure reducing valve provided between the manual pressure reducing valve and the air supply member.

Further, the gas transmission reversing piece comprises an electromagnetic three-way reversing valve, the electromagnetic three-way reversing valve comprises a first valve port, a second valve port and a third valve port, the first valve port is communicated with the gas supply piece, the second valve port is communicated with the gas outlet channel, the third valve port is communicated with the gas inlet of the tank body, when the electromagnetic three-way reversing valve is in a first position, the first valve port is communicated with the third valve port, the second valve port is disconnected with the third valve port, when the electromagnetic three-way reversing valve is in a second position, the second valve port is communicated with the third valve port, and the first valve port is disconnected with the third valve port; the air transmission reversing piece further comprises a control pipeline, one end of the control pipeline is communicated with the air transmission pipeline, and the other end of the control pipeline is communicated with the electromagnetic three-way reversing valve to control the electromagnetic three-way reversing valve to switch between a first position and a second position.

Further, the test device of the transformer oil tank further comprises a rubber tube, a connecting interface is arranged at the oil inlet of the oil tank of the transformer, and the oil outlet is connected with the oil inlet through the rubber tube.

Further, the testing device of the transformer oil tank further comprises an exhaust valve for exhausting gas in the tank body, and the exhaust valve is arranged on the connecting interface in an openable and closable manner.

Further, the testing device of the transformer oil tank further comprises a pressure sensor for detecting the oil tank of the transformer.

Further, the tank body is provided with a pressure gauge for detecting the pressure in the tank body; and/or the top of the tank body is provided with a safety valve which is used for being communicated with the outside of the testing device of the transformer oil tank.

Further, a liquid level meter for observing transformer oil is arranged on the side wall of the tank body; and/or the bottom of the tank body is provided with an oil drain port for draining transformer oil.

Further, a throttle valve for slowing down the exhaust speed is arranged on the gas transmission pipeline; the air supply member includes an air compressor.

By applying the technical scheme of the utility model, the test device of the transformer oil tank comprises a tank body, a gas transmission assembly and a pressure regulating assembly, wherein the tank body is provided with a storage cavity for storing transformer oil, the tank body is provided with a gas inlet and a gas outlet which are communicated with the storage cavity, the gas inlet is higher than the gas outlet, compressed gas is provided by a gas supply part in the gas transmission assembly, so that the compressed gas can be conveniently introduced into the tank body, transformer oil is prevented from entering the gas transmission pipeline, a gas outlet of the gas supply part is communicated with a gas inlet of the gas transmission pipeline, and a gas outlet of the gas transmission pipeline is communicated with a gas inlet of the storage cavity. The oil outlet of the tank body is communicated with the oil tank of the transformer, when compressed gas is introduced into the tank body, the compressed gas in the tank body can apply pressure to the transformer oil in the tank body, so that the transformer oil can enter the oil tank of the transformer, and the pressure of the compressed gas in the gas pipeline can be regulated by regulating the pressure regulating part on the gas pipeline, so that the pressure of the transformer oil can be regulated by the compressed gas in the tank body, the compressed gas can be controlled and regulated under the action of the pressure regulating part, the pressure of the compressed gas in the tank body can be regulated, and the compressed gas acts on the transformer oil, so that the acting force generated by the transformer oil can be regulated, the oil pressure in the transformer oil tank can be regulated, the transformer oil pressure can be detected, the structural strength of the transformer oil tank under the transformer oil pressure can be obtained, and the structural reliability and the practicability of the testing device of the transformer oil tank can be improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

Fig. 1 shows a schematic diagram of a test device for a transformer tank provided by an embodiment of the utility model.

Wherein the above figures include the following reference numerals:

10. a tank body; 11. a storage chamber; 12. an oil outlet;

20. a gas delivery assembly; 21. a gas supply member; 22. a gas transmission pipeline;

30. A pressure regulating assembly; 31. a pressure regulating member; 311. a manual pressure reducing valve; 312. a filter pressure reducing valve; 32. a gas transmission reversing piece; 3211. a first valve port; 3212. a second valve port; 3213. a third valve port; 322. a control pipeline;

41. a rubber tube; 42. a connection interface; 43. an exhaust valve; 44. a pressure sensor; 45. a pressure gauge; 46. a safety valve; 47. a liquid level gauge; 48. an oil drain port; 49. a throttle valve;

51. And an oil inlet.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1, the embodiment of the utility model provides a test device for a transformer oil tank, the test device for the transformer oil tank comprises a tank body 10, a gas transmission assembly 20 and a pressure regulating assembly 30, the tank body 10 is provided with a storage cavity 11 for storing transformer oil, the tank body 10 is provided with a gas inlet and a gas outlet 12 which are communicated with the storage cavity 11, the gas outlet 12 is communicated with the oil tank of a transformer, the gas inlet is higher than the gas outlet 12, the gas transmission assembly 20 comprises a gas supply piece 21 and a gas transmission pipeline 22, the gas inlet of the gas transmission pipeline 22 is communicated with the gas outlet of the gas supply piece 21, the gas outlet of the gas transmission pipeline 22 is communicated with the gas inlet of the tank body 10, the pressure regulating assembly 30 comprises a pressure regulating piece 31 and a gas transmission reversing piece 32, the pressure regulating piece 31 and the gas transmission reversing piece 32 are both arranged on the gas transmission pipeline 22, the gas transmission reversing piece 32 is provided with a first position and a second position, compressed gas of the gas supply piece 21 is introduced into the storage cavity 11 through the gas transmission pipeline 22 when the gas transmission reversing piece 32 is positioned at the first position, and compressed gas of the storage cavity 11 is discharged to the outside of the test device for the transformer oil tank through the gas transmission pipeline 22 when the gas transmission reversing piece 32 is positioned at the second position.

The test device for the transformer oil tank provided by the embodiment is applied, the test device for the transformer oil tank comprises a tank body 10, a gas transmission assembly 20 and a pressure regulating assembly 30, the tank body 10 is provided with a storage cavity 11 for storing transformer oil, the tank body 10 is provided with a gas inlet and a gas outlet 12 which are communicated with the storage cavity 11, the gas inlet is higher than the gas outlet 12, compressed gas is provided through a gas supply piece 21 in the gas transmission assembly 20, so that the compressed gas is conveniently introduced into the tank body 10, transformer oil is prevented from entering a gas transmission pipeline 22, the gas outlet of the gas supply piece 21 is communicated with the gas inlet of the gas transmission pipeline 22, the gas outlet of the gas transmission pipeline 22 is communicated with the gas inlet of the storage cavity 11, wherein in order to ensure that the compressed gas in the gas transmission pipeline 22 is controlled and regulated, the pressure regulating piece 31 and the gas transmission reversing piece 32 are arranged on the gas transmission pipeline 22, when the gas transmission reversing piece 32 is positioned at a first position, the compressed gas in the gas transmission pipeline 21 is introduced into the storage cavity 11 through the transformer oil piece 32 after being regulated and controlled by the pressure regulating piece 21, and when the transformer oil is prevented from entering the gas transmission pipeline 22, and the compressed gas is not introduced into the storage cavity 11 through the gas transmission pipeline 22 through the gas transmission assembly 11, so that the compressed gas can be discharged outside the test device through the gas transmission tank 11. The oil outlet 12 of the tank body 10 is communicated with the oil tank of the transformer, when compressed gas is introduced into the tank body 10, the compressed gas in the tank body 10 can apply pressure to the transformer oil in the tank body 10, so that the transformer oil can enter the oil tank of the transformer, and the pressure of the compressed gas in the gas pipeline 22 can be regulated by regulating the pressure regulating part 31 on the gas pipeline 22, so that the pressure of the compressed gas in the tank body 10 can be regulated to the transformer oil, the control regulation of the compressed gas can be realized under the action of the pressure regulating part 31, the pressure of the compressed gas in the tank body 10 can be regulated, and the compressed gas acts on the transformer oil, so that the acting force generated by the transformer oil on the transformer oil tank can be regulated, the oil pressure in the transformer oil tank can be regulated, the transformer oil ballast load can be detected, the structural strength of the transformer oil tank under the transformer oil ballast load can be obtained, and the structural reliability and the practicability of a test device of the transformer oil tank can be improved.

As shown in fig. 1, the regulator 31 includes a manual pressure reducing valve 311, and the manual pressure reducing valve 311 is provided between the air supply member 21 and the air inlet of the tank 10. By adopting the structure, the manual pressure reducing valve 311 is arranged, and the manual pressure reducing valve 311 is arranged between the air inlet of the air supply piece 21 and the air inlet of the tank body 10, so that the manual pressure reducing valve 311 is controlled and regulated conveniently, the compressed air on the air conveying pipeline 22 is ensured to be regulated accurately, the pressure of the compressed air is regulated conveniently, and the regulation mode is simple and is convenient to operate.

As shown in fig. 1, the regulator 31 further includes a filter reducing valve 312 provided between the manual reducing valve 311 and the air supply member 21. Through set up filtering relief pressure valve 312 between manual relief pressure valve 311 and air feed piece 21 for can play the filter effect to the compressed gas in the gas transmission pipeline 22 under filtering relief pressure valve 312's effect, avoid the inside steam of compressed gas to get into in the storage chamber 11 of jar body 10 and produce the influence to the transformer oil, can play preliminary decompression's effect to compressed gas again, and let in manual relief pressure valve 311 with the compressed gas after the preliminary decompression, can promote the pressure regulating scope of pressure regulating piece 31 like this, guarantee can play pressure adjustable effect to the compressed gas that lets in jar body 10.

As shown in fig. 1, the gas transmission reversing member 32 includes an electromagnetic three-way reversing valve, which includes a first valve port 3211, a second valve port 3212, and a third valve port 3213, the first valve port 3211 is communicated with the gas supply member 21, the second valve port 3212 is communicated with the gas outlet channel, the third valve port 3213 is communicated with the gas inlet of the tank 10, when the electromagnetic three-way reversing valve is in the first position, the first valve port 3211 is communicated with the third valve port 3213, the second valve port 3212 is disconnected from the third valve port 3213, when the electromagnetic three-way reversing valve is in the second position, the second valve port 3212 is communicated with the third valve port 3213, and the first valve port 3211 is disconnected from the third valve port 3213. By adopting the structure, the first valve port 3211 is communicated with the air supply piece 21 through the electromagnetic three-way reversing valve, the second valve port 3212 is communicated with the air outlet channel, and the third valve port 3213 is communicated with the air inlet of the tank body 10, so that when the electromagnetic three-way reversing valve is positioned at the first position, the first valve port 3211 and the third valve port 3213 are communicated, the compressed air can enter the tank body 10, the compressed air in the tank body 10 applies pressure to the transformer oil, and the pressure of the transformer oil to the oil tank of the transformer can be controlled through pressure regulation on the compressed air in the tank body 10, so that the structural strength of the transformer oil tank under the action of the transformer oil pressure can be obtained. When the electromagnetic three-way reversing valve is in the second position, the second valve port 3212 is communicated with the third valve port 3213, so that a pressure difference exists between the compressed gas in the storage cavity 11 of the tank body 10 and the outside of the testing device of the transformer oil tank, and the compressed gas in the storage cavity 11 is ensured to be introduced into the outside through the second valve port 3212 and the third valve port 3213, so that the compressed gas can be discharged.

As shown in fig. 1, the air delivery reversing element 32 further includes a control pipeline 322, one end of the control pipeline 322 is communicated with the air delivery pipeline 22, and the other end of the control pipeline 322 is communicated with the electromagnetic three-way reversing valve to control the electromagnetic three-way reversing valve to switch between the first position and the second position. By adopting the structure, the electromagnetic three-way reversing valve can be switched between the first position and the second position under the action of the control pipeline 322 by arranging the control pipeline 322, so that the operation mode is simple, and the structural reliability of the gas transmission reversing piece 32 is convenient to guarantee.

As shown in fig. 1, the test device of the transformer oil tank further comprises a rubber tube 41, a connection interface 42 is arranged at an oil inlet 51 of the oil tank of the transformer, and the oil outlet 12 is connected with the oil inlet 51 through the rubber tube 41. By adopting the structure, one end of the rubber tube 41 is communicated with the oil outlet 12, and the other end of the rubber tube 41 is communicated with the oil inlet 51 through the connecting interface 42, so that transformer oil in the tank 10 can be conveniently introduced into an oil tank of a transformer through the rubber tube 41.

As shown in fig. 1, the testing device for the transformer tank further comprises an exhaust valve 43 for exhausting the gas in the tank body 10, and the exhaust valve 43 is openably and closably arranged on the connection interface 42. By adopting the structure, through setting the exhaust valve 43 on the connection interface 42, the compressed gas is introduced into the tank body 10, the compressed gas can exert pressure on the transformer oil, so that the transformer oil can enter the transformer oil tank, because the tank body 10 can have air, in order to avoid the air of the tank body 10 to inject the air into the transformer oil tank when the transformer oil is injected into the transformer oil tank, the air is required to be discharged through the exhaust valve 43, the rubber tube 41 discharges the transformer oil after the air is discharged, the exhaust valve 43 is closed, and thus, the transformer oil can be ensured to be introduced into the transformer oil tank, and the transformer oil tank is free from gas.

It should be noted that, be provided with the oiling mouth on the top of jar body 10, be convenient for with transformer oil through the oiling mouth discharge to storage chamber 11 in, when the input compressed air, the oiling mouth closes, avoids compressed air to pass through the oiling mouth discharge.

The exhaust valve 43 is communicated with the connection interface 42, specifically, the exhaust valve 43 is arranged on the connection interface 42, when the exhaust valve 43 exhausts air, the valve on the connection interface 42 is controlled to be closed, the air is directly exhausted through the exhaust valve 43, after the exhaust is finished, the exhaust valve 43 is closed, and the valve on the connection interface 42 is controlled to be opened to inject transformer oil into the transformer oil tank.

As shown in fig. 1, the test apparatus for the transformer tank further includes a pressure sensor 44 for detecting the tank of the transformer. With the above structure, the pressure sensor 44 can detect the pressure of the oil tank of the transformer in real time, thereby facilitating the structural strength of the oil tank of the transformer under different pressures.

As shown in fig. 1, the tank 10 is provided with a pressure gauge 45 for detecting the pressure inside the tank 10. The pressure inside the tank 10 is conveniently detected by providing a pressure gauge 45.

As shown in fig. 1, the top of the tank 10 is provided with a safety valve 46 for communication with the outside of the test apparatus of the transformer tank. With the above structure, the safety valve 46 can protect the tank 10, so that the problem of damage caused by large pressure in the tank 10 can be avoided.

As shown in fig. 1, a gauge 47 for observing the oil of the transformer is provided on the side wall of the tank 10. With the above structure, by providing the level gauge 47, it is convenient to observe the liquid level of the transformer oil in the tank 10.

As shown in fig. 1, the bottom of the tank 10 is provided with an oil drain 48 for draining transformer oil. By providing the oil drain 48, it is convenient to drain the transformer oil through the oil drain 48.

As shown in fig. 1, the gas line 22 is provided with a throttle valve 49 for slowing down the exhaust speed. By providing the throttle valve 49, the compressed air output from the gas line 22 can be controlled in the flow rate.

In the present embodiment, the air supply member 21 includes an air compressor. By providing the air compressor, it is thus convenient to supply compressed air, so that the air supply member 21 is simple in structure.

The device provided by the embodiment has the following beneficial effects:

(1) The oil outlet 12 of the tank body 10 is communicated with the oil tank of the transformer, when compressed gas is introduced into the tank body 10, the compressed gas in the tank body 10 can apply pressure to the transformer oil in the tank body 10, so that the transformer oil can enter the oil tank of the transformer, the pressure of the compressed gas in the gas pipeline 22 can be regulated by regulating the pressure regulating part 31 on the gas pipeline 22, the pressure of the compressed gas in the tank body 10 can be regulated, the control regulation of the compressed gas can be realized under the action of the pressure regulating part 31, the pressure of the compressed gas in the tank body 10 can be regulated, and the compressed gas acts on the transformer oil, so that the acting force generated by the transformer oil on the transformer oil tank can be regulated, the oil pressure in the transformer oil tank can be regulated, the transformer oil ballast load can be detected, the structural strength of the transformer oil tank under the transformer oil ballast load can be obtained, and the structural reliability and the practicability of a test device of the transformer oil tank can be improved;

(2) Under the action of the filtering and pressure reducing valve 312, the compressed gas in the gas transmission pipeline 22 can be filtered, so that the water vapor in the compressed gas is prevented from entering the storage cavity 11 of the tank body 10 to affect the transformer oil, the compressed gas can be subjected to primary pressure reduction, and the compressed gas subjected to primary pressure reduction is introduced into the manual pressure reducing valve 311, so that the pressure regulating range of the pressure regulating piece 31 can be increased, and the pressure-adjustable effect on the compressed gas introduced into the tank body 10 is ensured;

(3) When the electromagnetic three-way reversing valve is in the first position, the first valve port 3211 is communicated with the third valve port 3213, so that compressed gas can enter the tank body 10, the compressed gas in the tank body 10 applies pressure to transformer oil, the pressure of the transformer oil to the oil tank of the transformer can be controlled by pressure regulation of the compressed gas in the tank body 10, and the structural strength of the transformer oil tank under the action of transformer oil pressure can be obtained. When the electromagnetic three-way reversing valve is in the second position, the second valve port 3212 is communicated with the third valve port 3213, so that a pressure difference exists between the compressed gas in the storage cavity 11 of the tank body 10 and the outside of the testing device of the transformer oil tank, and the compressed gas in the storage cavity 11 is ensured to be introduced into the outside through the second valve port 3212 and the third valve port 3213, so that the compressed gas can be discharged.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. The utility model provides a test device of transformer tank, its characterized in that, the test device of transformer tank includes:

The oil tank comprises a tank body (10) and a storage cavity (11) for storing transformer oil, wherein an air inlet and an oil outlet (12) which are communicated with the storage cavity (11) are arranged on the tank body (10), the oil outlet (12) is communicated with an oil tank of a transformer, and the air inlet is higher than the oil outlet (12);

The air conveying assembly (20) comprises an air supply piece (21) and an air conveying pipeline (22), an air inlet of the air conveying pipeline (22) is communicated with an air outlet of the air supply piece (21), and an air outlet of the air conveying pipeline (22) is communicated with an air inlet of the tank body (10);

Pressure regulating subassembly (30), including pressure regulating piece (31) and gas-supply switching-over piece (32), pressure regulating piece (31) with gas-supply switching-over piece (32) all set up on gas transmission pipeline (22), gas-supply switching-over piece (32) have first position and second position, gas-supply switching-over piece (32) are in when first position compressed gas of gas supply piece (21) is passed through gas transmission pipeline (22) lets in storage chamber (11), gas-supply switching-over piece (32) are in when second position compressed gas of storage chamber (11) passes through gas transmission pipeline (22) discharge extremely the outside of the test device of transformer tank.

2. The device for testing a transformer tank according to claim 1, characterized in that the pressure regulating member (31) comprises a manual pressure reducing valve (311), the manual pressure reducing valve (311) being arranged between the air supply member (21) and the air inlet of the tank (10).

3. The device for testing a transformer tank according to claim 2, characterized in that the pressure regulator (31) further comprises a filter pressure reducing valve (312) arranged between the manual pressure reducing valve (311) and the air supply (21).

4. A test device for a transformer tank as claimed in claim 3, wherein,

The gas transmission reversing piece (32) comprises an electromagnetic three-way reversing valve, the electromagnetic three-way reversing valve comprises a first valve port (3211), a second valve port (3212) and a third valve port (3213), the first valve port (3211) is communicated with the gas supply piece (21), the second valve port (3212) is communicated with a gas outlet channel, the third valve port (3213) is communicated with the gas inlet of the tank body (10), when the electromagnetic three-way reversing valve is in the first position, the first valve port (3211) is communicated with the third valve port (3213), the second valve port (3212) is disconnected with the third valve port (3213), and when the electromagnetic three-way reversing valve is in the second position, the second valve port (3212) is communicated with the third valve port (3213), and the first valve port (1) is disconnected with the third valve port (3213);

The gas transmission reversing piece (32) further comprises a control pipeline (322), one end of the control pipeline (322) is communicated with the gas transmission pipeline (22), and the other end of the control pipeline (322) is communicated with the electromagnetic three-way reversing valve to control the electromagnetic three-way reversing valve to switch between a first position and a second position.

5. The device for testing a transformer tank according to any one of claims 1 to 4, characterized in that the device for testing a transformer tank further comprises a rubber tube (41), a connection interface (42) is provided at an oil inlet (51) of the tank of the transformer, and the oil outlet (12) is connected with the oil inlet (51) through the rubber tube (41).

6. The device for testing a transformer tank according to claim 5, further comprising a vent valve (43) for venting gas from the tank (10), the vent valve (43) being openably and closably arranged on the connection interface (42).

7. The transformer tank testing device according to any of claims 1 to 4, characterized in that the transformer tank testing device further comprises a pressure sensor (44) for detecting the tank of the transformer.

8. The test device for a transformer tank according to any one of claims 1 to 4,

The tank body (10) is provided with a pressure gauge (45) for detecting the pressure in the tank body (10); and/or the number of the groups of groups,

The top of the tank body (10) is provided with a safety valve (46) which is used for being communicated with the outside of the testing device of the transformer oil tank.

9. The test device for a transformer tank according to any one of claims 1 to 4,

A liquid level meter (47) for observing transformer oil is arranged on the side wall of the tank body (10); and/or the bottom of the tank body (10) is provided with an oil drain port (48) for draining transformer oil.

10. The test device for a transformer tank according to any one of claims 1 to 4,

A throttle valve (49) for slowing down the exhaust speed is arranged on the gas transmission pipeline (22);

The air supply member (21) includes an air compressor.