Transformer gas collection test tool convenient to operate

Abstract

The utility model relates to a transformer gas collection test tool convenient to operate, which comprises a closed gas storage tank, the upper end of the gas storage tank is communicated with a transformer oil tank through a valve, the upper end of the gas storage tank is lower than the oil level of the transformer oil in the transformer oil tank, and the gas storage tank comprises a tubular tank body. The tank body is obliquely arranged, the upper end and the lower end of the tank body are fixedly connected with an upper end flange plate and a lower end flange plate respectively, the upper end flange plate is in flange connection with the valve, and the lower end flange plate is in flange connection with a cover plate. The gas flows upwards and is collected by the gas collection device, if the gas collection device collects a qualified amount of gas within a specified time, the gas flow path is proved to be smooth, and the tool can accurately design the gas injection amount, is convenient to observe and easy to operate, and enables the whole test process to be smooth.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a transformer gas collection test tool with convenient operation. Background Art

[0002] When a transformer fails, the heat will cause the transformer oil to crack and produce hydrocarbon gas, and the solid insulation will be carbonized to produce carbon monoxide and carbon dioxide gas. In order to prevent dangerous accidents such as fire caused by the rapid increase in internal pressure of the transformer after the failure occurs, the transformer is equipped with a gas relay protection device. After the fault gas enters, light gas and heavy gas protection will be activated to prevent the failure from expanding. The generated gas flows upward and is collected by its device. However, when designing the transformer, it is necessary to consider whether the gas path of each part is unobstructed, so as to avoid the gas flow being blocked when flowing upward and unable to reach the gas collection device. In order to verify the reliability of the design, the transformer test needs to add gas collection test items, which need to be supported by corresponding test devices. Utility Model Content

[0003] The utility model aims at the deficiencies of the prior art and provides a transformer gas collection test tool which is easy to operate.

[0004] The utility model is realized through the following technical scheme, and provides a transformer gas collection test tool that is easy to operate, including a closed gas storage tank, the upper end of which is connected to the transformer oil tank through a valve, and the upper end of which is lower than the transformer oil level in the transformer oil tank.

[0005] In this scheme, the upper end of the gas storage tank is connected to the transformer oil tank through a valve. During the gas collection test, the valve is opened to allow a certain amount of gas in the tank to enter the transformer oil tank. The gas flows upward and is collected by the gas collecting device. If the gas collecting device collects a qualified amount of gas within the specified time, it proves that the gas flow path is unobstructed.

[0006] As an optimization, the gas storage tank includes a tubular tank body, the tank body is tilted and the upper and lower ends are respectively fixed with an upper flange and a lower flange, the upper flange is connected to the valve flange, and the lower flange is connected to a cover plate. In this solution, the tank body is tilted to facilitate gas entering the transformer oil tank, the upper flange is connected to the valve flange, which is convenient for the disassembly and assembly of this tooling, and the lower flange is connected to a cover plate, which is convenient for releasing the transformer oil inside after the test is completed.

[0007] As an optimization, the cover plate is a transparent plate, so that it can be directly observed whether the gas and oil in the tank have been completely replaced.

[0008] As an optimization, a vent plug is installed at the upper end of the tank body. The vent plug is mainly used to verify whether there is air trapped at the highest point, which causes inaccurate gas injection.

[0009] As an optimization, the angle between the axis of the tank body and the horizontal plane is a, and a is 10 degrees to 20 degrees, thereby reducing the possibility of air trapping in the tank body.

[0010] As an optimization, the volume of the gas storage tank is 200-1000 ml, so as to realize quantitative supply of gas.

[0011] The beneficial effects of the utility model are as follows: the utility model is a transformer gas collection test tool that is easy to operate. During the gas collection test, the valve is opened to allow a certain amount of gas in the tank to enter the transformer oil tank. The gas flows upward and is collected by the gas collecting device. If the gas collecting device collects a qualified amount of gas within the specified time, it proves that the gas flow path is unobstructed. This tool can accurately design the gas injection volume, is convenient for observation, and is easy to operate, so that the entire test process is smooth. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the installation of the utility model;

[0013] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0014] As shown in the figure:

[0015] 1. Tank body, 2. Vent plug, 3. Upper flange, 4. Valve, 5. Lower flange, 6. Cover plate, 7. Transformer oil tank. DETAILED DESCRIPTION

[0016] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0017] like Figure 1~2 As shown, the utility model is a conveniently operated transformer gas collection test tool, including a closed gas storage tank, the upper end of which is connected to the transformer oil tank 7 through a valve 4, and the upper end of which is lower than the transformer oil level in the transformer oil tank 7.

[0018] The volume of the gas storage tank is 200-1000ml. In this embodiment, the tank body meets the 500ml gas volume required by the protocol and meets the strength requirements. The installation position has a certain liquid level height and a liquid pressure of 30-100kPa.

[0019] The gas storage tank is arranged tilted, and the upper end in the tilting direction is connected with the transformer oil tank 7, so that the internal gas can enter the transformer oil tank 7, and the transformer oil in the transformer oil tank can enter the gas storage tank.

[0020] The gas storage tank includes a tubular tank body 1, which is a round tube in this embodiment. The tank body 1 is tilted, and the angle between the axis of the tank body 1 and the horizontal plane is a, and a is 10 degrees to 20 degrees. In this embodiment, a is an angle of 15 degrees, which reduces the possibility of gas trapping in the tank body.

[0021] An upper flange 3 and a lower flange 5 are fixedly connected at the upper and lower ends respectively. The upper flange 3 is flange-connected to a valve 4. The valve 4 is a butterfly valve and is flange-connected to the side of the transformer oil tank.

[0022] The flange of the lower flange 5 is connected with a cover plate 6. The cover plate 6 is a transparent plate. In this embodiment, a plexiglass cover plate is used to visually observe whether the gas and oil in the tank have been completely replaced.

[0023] The upper end of the tank body 1 is provided with a vent plug 2. When the vent plug 2 is opened, oil seeps out, which proves that all the gas has entered the transformer tank, thereby verifying whether the highest point is filled with gas, resulting in inaccurate gas injection.

[0024] The use of the utility model:

[0025] During the gas collection test, a certain amount of gas is injected into the oil tank of the transformer. The gas flows upward and is collected by the gas collecting device. If the gas collecting device collects a qualified amount of gas within the specified time, it proves that the gas flow path is unobstructed. When conducting the gas collection test, the operation is generally performed three times in succession at the same position until the specified amount of gas is finally collected.

[0026] The upper part of the tooling is connected to the transformer oil tank 7 through a butterfly valve, and the lower organic glass cover is connected to the tank body through a flange. Opening the butterfly valve can allow a certain amount of gas in the tank body to enter the transformer oil tank.

[0027] After a test is completed, the stored transformer oil can be completely released by quickly loosening the fastening bolts. The test can be repeated after tightening, which is convenient for operation.

[0028] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A transformer gas collection test tool that is easy to operate, characterized by: It comprises a sealed gas storage tank, the upper end of which is connected to a transformer oil tank (7) via a valve (4), and the upper end of which is lower than the transformer oil level in the transformer oil tank (7).

2. The transformer gas collection test tool that is easy to operate according to claim 1 is characterized by: The gas storage tank comprises a tubular tank body (1), the tank body (1) is arranged obliquely and has an upper flange (3) and a lower flange (5) fixedly connected at its upper and lower ends respectively, the upper flange (3) being flange-connected to a valve (4), and the upper flange of the lower flange (5) being flange-connected to a cover plate (6).

3. The transformer gas collection test tool that is easy to operate according to claim 2 is characterized by: The cover plate (6) is a transparent plate.

4. The transformer gas collection test tool that is easy to operate according to claim 2 is characterized by: The upper end of the tank body (1) is provided with a vent plug (2).

5. The transformer gas collection test tool that is easy to operate according to claim 2 is characterized by: The angle between the axis of the tank body (1) and the horizontal plane is a, and a is between 10 degrees and 20 degrees.

6. The transformer gas collection test tool that is easy to operate according to claim 1 is characterized by: The volume of the gas storage tank is 200-1000ml.

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