Transformer oil rapid degassing device and transformer oil degassing method

Abstract

The invention discloses a transformer oil rapid degassing device and a transformer oil degassing method. The rapid degassing device for the transformer oil comprises an oil inlet pipe, an oil suction assembly, a gas filling assembly and a gas taking assembly, the oil suction assembly comprises a main body, a piston assembly and a motor, an oil storage cavity is formed in the main body, the oil inlet pipe is connected with the main body and communicated with the oil storage cavity, and the piston assembly is movably arranged in the oil storage cavity; the motor is connected with the piston assembly to drive the piston assembly to move, the gas filling assembly is connected with the body and communicated with the oil storage cavity, and the gas taking assembly is connected with the body and communicated with the oil storage cavity. After the transformer oil is pumped into the oil storage cavity, the oil inlet pipe is plugged, then the motor continues to be started to enable the transformer oil to be in the negative pressure environment, gas in the transformer oil can be rapidly separated out in the negative pressure environment, the time needed for degassing can be greatly shortened, and then the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of transformer testing, and in particular to a transformer oil rapid degassing device and a transformer oil degassing method. Background Art

[0002] When conducting a chromatographic test in transformer oil, it is often necessary to use a needle to take out the transformer oil, take it back for degassing during the test, and then conduct a chromatographic analysis test. The entire process takes at least 5 hours at the fastest. Especially when the transformer fails and the power goes out, due to the high requirements for power supply reliability of the power system, it is often necessary to conduct a comprehensive inspection of the transformer as quickly as possible. Oil chromatography is a very important project in transformer testing. Therefore, the development of an on-site rapid separation device for gas in oil can save a lot of time and improve work efficiency, which is very necessary in the maintenance of the transformer. Summary of the invention

[0003] In order to solve the problem of long degassing time in the prior art, the present invention provides a transformer oil rapid degassing device.

[0004] The present application also provides a transformer oil rapid degassing device, comprising an oil inlet pipe, an oil suction assembly, an air filling assembly and an air extraction assembly, the oil suction assembly comprising a main body, a piston assembly and a motor, an oil storage chamber is provided inside the main body, the oil inlet pipe is connected to the main body and communicates with the oil storage chamber, the piston assembly is movably arranged inside the oil storage chamber, the motor is connected to the piston assembly to drive the piston assembly to move, the air filling assembly is connected to the main body, the air filling assembly is communicated with the oil storage chamber, the air extraction assembly is connected to the main body, and the air extraction assembly is communicated with the oil storage chamber.

[0005] In some embodiments, a first valve is provided between the oil inlet pipe and the main body, a second valve is provided between the gas filling assembly and the main body, and a third valve is provided between the gas extraction assembly and the main body;

[0006] Among them, the oil inlet pipe can be selectively connected to the oil storage chamber through the first valve, the gas filling component can be selectively connected to the oil storage chamber through the second valve, and the gas extraction component can be selectively connected to the oil storage chamber through the third valve.

[0007] In some embodiments, the first valve is a two-way valve, the second valve and the third valve are both one-way valves, the connection direction of the second valve is from the gas filling component toward the main body, and the connection direction of the third valve is from the main body toward the gas extraction component.

[0008] In some embodiments, the gas filling assembly includes a gas storage bottle and a fourth valve, the gas storage bottle is connected to the main body, the fourth valve is connected to the gas storage bottle, and the fourth valve is used to connect to an external gas source.

[0009] In some embodiments, the fourth valve is a one-way valve, and the fourth valve is connected to the interior of the gas storage cylinder.

[0010] In some embodiments, the piston assembly includes a piston head and a piston rod, the piston head is connected to the piston rod, the piston rod is connected to the output end of the motor, the outer periphery of the piston head is tightly sealed against the inner wall of the oil storage cavity, and the piston head can move along the radial direction of the oil storage cavity;

[0011] The motor is used to drive the piston rod to drive the piston head to move along the radial direction of the oil storage cavity.

[0012] In some embodiments, the piston rod is a threaded rod, the piston rod is passed through the main body and is threadedly connected to the main body, and the motor is used to drive the piston rod to rotate.

[0013] In some embodiments, the gas extraction assembly includes a gas extraction cylinder and a gas extraction piston. A gas extraction cavity is defined inside the gas extraction cylinder, and the gas extraction piston is at least partially movably disposed inside the gas extraction cavity.

[0014] In some embodiments, the transformer oil rapid degassing device further includes a pressure gauge, which is disposed on the main body and communicated with the oil storage cavity to detect the air pressure inside the oil storage cavity.

[0015] The present application also provides a transformer oil degassing method, characterized in that the transformer oil degassing method adopts the transformer oil rapid degassing device described in claim 1, and the transformer oil degassing method comprises:

[0016] The oil inlet pipe is immersed under the liquid level of the transformer oil, and the motor is started to drive the piston assembly to move so that a negative pressure state is formed inside the oil storage chamber, and then a predetermined amount of transformer oil is introduced into the oil storage chamber, and then the pipeline of the oil inlet pipe is sealed, and then the motor is started again to form a continuous negative pressure environment inside the oil storage chamber. Under the negative pressure environment, the gas in the transformer oil is precipitated. After the precipitation is completed, the gas adding assembly is used to introduce inert gas into the oil storage chamber to balance the air pressure. After the air pressure is balanced, the gas inside the oil storage chamber is extracted by the gas extraction assembly to carry out the transformer oil chromatography experiment.

[0017] Compared with the prior art, a transformer oil rapid degassing device according to an embodiment of the present invention has the following beneficial effects: a transformer oil rapid degassing device provided by the present application comprises an oil inlet pipe, an oil suction assembly, an aeration assembly and an air extraction assembly, the oil suction assembly comprises a main body, a piston assembly and a motor, an oil storage chamber is provided inside the main body, the oil inlet pipe can be a hose, the oil inlet pipe is connected to the main body and communicates with the oil storage chamber, the piston assembly is movably arranged inside the oil storage chamber, the motor is connected to the piston assembly to drive the piston assembly to move along the oil storage chamber, the piston assembly utilizes the principle of piston suction to draw transformer oil into or out of the oil storage chamber during the movement, the aeration assembly is connected to the main body, the aeration assembly is communicated with the oil storage chamber, the aeration assembly can introduce compressed gas into the interior of the oil storage chamber, and in a chromatographic test in transformer oil, the aeration assembly is used to introduce inert gas such as nitrogen into the interior of the oil storage chamber; the air extraction assembly is connected to the main body, the air extraction assembly is communicated with the oil storage chamber, and the air extraction assembly is used to extract gas inside the oil storage chamber for testing. In the test, the transformer oil used for the test is pumped into the oil storage chamber through the oil inlet pipe. When the transformer oil is extracted, the motor is started to drive the piston assembly to move in the suction direction. During the movement of the piston assembly, negative pressure is generated at one end of the oil storage chamber close to the oil inlet pipe to cause the transformer oil to be pumped into the inner part of the oil storage chamber. After a sufficient amount of transformer oil is pumped in, the oil inlet pipe is blocked, and the motor is started again to drive the piston assembly to move in the suction direction. At this time, a vacuum is formed inside the oil storage chamber. In a vacuum environment, the air dissolved in the transformer oil will overflow, and the transformer oil is degassed. After the gas in the transformer oil overflows, inert gas such as nitrogen is introduced into the oil storage chamber through the gas filling assembly. After the air pressure inside the oil storage chamber is balanced, the air inside the oil storage chamber is extracted through the extractor assembly for testing. Since the overflow of gas in the transformer oil can be accelerated by vacuum, the degassing time is greatly shortened and the work efficiency is improved, which is very necessary in the maintenance of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0019] Figure 2 It is a schematic diagram of the internal structure after cutting of an embodiment of the present application;

[0020] Figure 3 yes Figure 2 A schematic diagram of the structure enlargement in the middle;

[0021] Figure 4 is another schematic diagram of the internal structure after cutting of one embodiment of the present application;

[0022] Figure 5 yes Figure 4 Enlarged schematic diagram of the structure at point B in the middle.

[0023] 100, oil inlet pipe; 200, oil suction assembly; 21, main body; 01, oil storage chamber; 22, piston assembly; 221, piston head; 222, piston rod; 23, motor; 300, gas filling assembly; 31, gas storage bottle; 32, fourth valve; 400, gas extraction assembly; 41, gas extraction cylinder; 02, gas extraction chamber; 42, gas extraction piston; 500, first valve; 600, second valve; 700, third valve; 800, pressure gauge. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present invention.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0026] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, or are the orientation or positional relationship in which the invented product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0027] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0030] like Figure 1 , Figure 2The transformer oil quick degassing device shown in the figure includes an oil inlet pipe 100, an oil suction assembly 200, an air filling assembly 300 and an air extraction assembly 400. The oil suction assembly 200 includes a main body 21, a piston assembly 22 and a motor 23. An oil storage chamber 01 is provided inside the main body 21. The oil inlet pipe 100 can be a hose. The oil inlet pipe 100 is connected to the main body 21 and communicates with the oil storage chamber 01. The piston assembly 22 is movably arranged inside the oil storage chamber 01. The motor 23 is connected to the piston assembly 22 to drive the piston assembly 22 to move along the oil storage chamber 01. The piston assembly 22 moves in the oil storage chamber 01. During the movement, the principle of piston suction is used to draw transformer oil into or out of the oil storage chamber 01. The gas filling component 300 is connected to the main body 21, and the gas filling component 300 is communicated with the oil storage chamber 01. The gas filling component 300 can pass compressed gas into the interior of the oil storage chamber 01. In the chromatographic test in transformer oil, the gas filling component 300 is used to pass inert gases such as nitrogen into the interior of the oil storage chamber 01; the gas extraction component 400 is connected to the main body 21, and the gas extraction component 400 is communicated with the oil storage chamber 01. The gas extraction component 400 is used to extract gas inside the oil storage chamber 01 for testing.

[0031] In the test, the transformer oil for the test is pumped into the oil storage chamber 01 through the oil inlet pipe 100. When the transformer oil is extracted, the motor 23 is started to drive the piston assembly 22 to move in the suction direction. During the movement of the piston assembly 22, negative pressure is generated at one end of the oil storage chamber 01 close to the oil inlet pipe 100 to pump the transformer oil into the oil storage chamber 01. After a sufficient amount of transformer oil is pumped in, the oil inlet pipe 100 is blocked, and the motor 23 is started again to drive the piston assembly 22 to move in the suction direction. At this time, a vacuum is formed inside the oil storage chamber 01. In the vacuum environment, the air dissolved in the transformer oil will overflow, and the transformer oil is degassed. After the gas in the transformer oil overflows, nitrogen and other inert gases are introduced into the oil storage chamber 01 through the gas filling assembly 300. After the air pressure inside the oil storage chamber 01 is balanced, the air inside the oil storage chamber 01 is extracted through the gas extraction assembly 400 for testing. Since the overflow of gas in the transformer oil can be accelerated by the vacuum, the degassing time is greatly shortened and the work efficiency is improved.

[0032] The following will introduce the technical details of each component one by one.

[0033] In some embodiments, Figure 1 , Figure 2As shown, a first valve 500 is arranged between the above-mentioned oil inlet pipe 100 and the main body 21, a second valve 600 is arranged between the above-mentioned gas filling component 300 and the main body 21, and a third valve 700 is arranged between the above-mentioned gas extraction component 400 and the main body 21; wherein, the oil inlet pipe 100 can be selectively connected to the oil storage chamber 01 through the first valve 500, the gas filling component 300 can be selectively connected to the oil storage chamber 01 through the second valve 600, and the gas extraction component 400 can be selectively connected to the oil storage chamber 01 through the third valve 700. Through the arrangement of the above-mentioned valves, after a sufficient amount of transformer oil is extracted, the first valve 500 can be closed to facilitate the blocking of the oil inlet pipe 100; the second valve 600 can control the gas filling component 300 to ventilate the inside of the oil storage chamber 01 to balance the air pressure, and the second valve 600 can conveniently control the switch of the gas filling component 300; the third valve 700 can conveniently control the connection state between the gas extraction component 400 and the inside of the oil storage chamber 01. During the degassing process, the third valve 700 is closed to prevent the gas extraction component 400 from leaking. When extracting the gas inside the oil storage chamber 01 after degassing, it is only necessary to open the third valve 700, which is convenient and quick.

[0034] In addition to the above effects, by respectively arranging the first valve 500, the second valve 600 and the third valve 700 between the oil inlet pipe 100, the gas filling assembly 300, the gas extraction assembly 400 and the main body 21, the oil inlet pipe 100, the gas filling assembly 300 and the gas extraction assembly 400 can also be easily replaced. During replacement, the first valve 500, the second valve 600 and the third valve 700 can be closed to prevent external air from entering the oil storage chamber 01.

[0035] In some embodiments, Figure 1 , Figure 2 As shown, the first valve 500 is a two-way valve, the second valve 600 and the third valve 700 are both one-way valves, the connection direction of the second valve 600 is from the gas filling component 300 toward the main body 21, and the connection direction of the third valve 700 is from the main body 21 to the gas extraction component 400.

[0036] In actual application, since the oil inlet pipe 100 needs to draw in transformer oil before the test and the transformer oil needs to be discharged after the test, the first valve 500 is a two-way valve; the gas filling component 300 is used to introduce inert gas into the interior of the oil storage chamber 01, so the second valve 600 is a one-way valve, which can also prevent the gas or liquid inside the oil storage chamber 01 from entering the gas filling component 300. Similarly, since the gas extraction component 400 is used to extract the gas inside the oil storage chamber 01, the third valve 700 is a one-way valve, which can also prevent external gas from entering the oil storage chamber 01 through the gas extraction component 400. In summary, the first valve 500 is a two-way valve, and the second valve 600 and the third valve 700 are both one-way valves, which are conducive to ensuring the accuracy and stability of the test results.

[0037] In some embodiments, Figure 1 , Figure 2 As shown, the above-mentioned gas filling assembly 300 includes a gas storage bottle 31 and a fourth valve 32. The gas storage bottle 31 is connected to the main body 21 to store inert gas, and the fourth valve 32 is connected to the gas storage bottle 31. The fourth valve 32 is used to connect to an external gas source.

[0038] In practical applications, the transformer oil rapid degassing device provided by the present application can be carried and moved, and the gas cylinder 31 can store a certain amount of gas, so that it is convenient to carry so as to degas the transformer oil at any time. The fourth valve 32 is used to inflate the gas cylinder 31. When the gas inside the gas cylinder 31 is insufficient, the gas cylinder 31 can be inflated through the fourth valve 32 for the next degassing process.

[0039] In some embodiments, Figure 1 , Figure 2 As shown, the fourth valve 32 is a one-way valve, and the fourth valve 32 is connected to the inside of the gas storage bottle 31. Through the above design, the inert gas stored in the gas storage tank can be prevented from leaking through the fourth valve 32.

[0040] In some embodiments, Figure 2 , Figure 3As shown, the piston assembly 22 includes a piston head 221 and a piston rod 222. The piston head 221 is connected to the piston rod 222. The piston rod 222 is connected to the output end of the motor 23. The surface of the piston head 221 is usually made of rubber material. The outer periphery of the piston head 221 is tightly sealed against the inner wall of the oil storage chamber 01. The rubber material can make the piston head 221 fit more closely with the inner wall of the oil storage chamber 01. The piston head 221 can move along the radial direction of the oil storage chamber 01; the motor 23 is used to drive the piston rod 222 to drive the piston head 221 to move along the radial direction of the oil storage chamber 01. The driving method of the motor 23 is more labor-saving, and the driving method of the motor 23 is convenient to control the moving distance of the piston head 221, so as to better grasp the amount of transformer oil extracted; after a sufficient amount of transformer oil is extracted, it is necessary to continue to move the piston assembly 22 to generate a negative pressure environment. The way in which the motor 23 controls the movement of the piston head 221 can generate a more stable negative pressure environment, so as to facilitate the degassing of the transformer oil.

[0041] In some embodiments, Figure 2 , Figure 3 As shown, the piston rod 222 may be a threaded rod, which is inserted through the main body 21 and threadedly connected to the main body 21, and the motor 23 is used to drive the piston rod 222 to rotate. When the motor 23 drives the piston rod 222 to rotate, the piston rod 222 moves relative to the main body 21, thereby driving the piston to move together. The threaded rod rotates under the drive of the motor 23 and can move continuously, stably and uniformly relative to the main body 21, thereby extracting transformer oil at a uniform speed and generating a stable negative pressure environment. In the stable negative pressure environment, the gas in the transformer oil can escape more easily.

[0042] In some embodiments, Figure 4 , Figure 5 As shown, the gas extraction assembly 400 includes a gas extraction cylinder 41 and a gas extraction piston 42. A gas extraction cavity 02 is provided inside the gas extraction cylinder 41, and the gas extraction piston 42 is at least partially movably arranged inside the gas extraction cavity 02. Through the above design, the gas extraction assembly 400 is similar to a syringe structure, has a simple structure and is convenient for gas extraction, which is conducive to reducing the production cost of the transformer oil rapid degassing device.

[0043] In actual application, after the transformer oil is degassed, the third valve 700 is opened and the gas extraction piston 42 is pulled to extract the gas inside the oil storage chamber 01 for testing. The gas extraction method is simple and convenient for users to operate.

[0044] In some embodiments, Figure 1 , Figure 2As shown, the transformer oil rapid degassing device provided in the present application also includes a pressure gauge 800 , which is disposed on the main body 21 and communicated with the oil storage cavity 01 to monitor the air pressure inside the oil storage cavity 01 . The monitoring end of the barometer 800 is arranged inside the oil storage chamber 01. The barometer 800 can monitor the air pressure inside the oil storage chamber 01 in real time. In the process of using the transformer oil rapid degassing device to degas the transformer oil, it is necessary to introduce inert gas into the oil storage chamber 01 through the gas filling component 300 to balance the air pressure inside the oil storage chamber 01. The gas introduced by the gas filling component 300 is usually compressed gas. If excessive inert gas is introduced, the air pressure inside the oil storage chamber will increase, thereby affecting the gas precipitation inside the transformer oil. The barometer 800 is arranged so that the operator can monitor the air pressure inside the oil storage chamber 01 in real time, and then it is convenient for the operator to control the amount of gas added through the gas filling component 300, so that the air pressure inside the oil storage chamber 01 can be accurately balanced. After the air pressure is balanced, the gas inside the oil storage chamber 01 can be taken to ensure the accuracy of the transformer oil chromatography experiment results.

[0045] The present application also provides a transformer oil degassing method, which uses the above-mentioned transformer oil rapid degassing device, and the transformer oil degassing method comprises:

[0046] The oil inlet pipe 100 is immersed under the liquid level of the transformer oil, and the motor 23 is started to drive the piston assembly 22 to move so that a negative pressure state is formed inside the oil storage chamber 01, and then a predetermined amount of transformer oil is introduced into the oil storage chamber 01, and then the pipeline of the oil inlet pipe 100 is sealed, and then the motor 23 is started again to form a continuous negative pressure environment inside the oil storage chamber 01. Under the negative pressure environment, the gas in the transformer oil is precipitated. After the precipitation is completed, an inert gas is introduced into the oil storage chamber 01 using the gas adding assembly 300 to balance the air pressure. After the air pressure is balanced, the gas inside the oil storage chamber 01 is extracted through the gas extraction assembly 400 to carry out the transformer oil chromatography experiment.

[0047] The above transformer oil degassing method can greatly shorten the time required for transformer oil degassing and improve work efficiency.

[0048] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A transformer oil rapid degassing device, characterized in that: include: Oil inlet pipe (100); An oil suction assembly (200), the oil suction assembly (200) comprising a main body (21), a piston assembly (22) and a motor (23); an oil storage chamber (01) is provided inside the main body (21); the oil inlet pipe (100) is connected to the main body (21) and communicates with the oil storage chamber (01); the piston assembly (22) is movably arranged inside the oil storage chamber (01); and the motor (23) is connected to the piston assembly (22) to drive the piston assembly (22) to move; An aeration assembly (300), the aeration assembly (300) is connected to the main body (21), and the aeration assembly (300) is communicated with the oil storage chamber (01); An air intake component (400), wherein the air intake component (400) is connected to the main body (21), and the air intake component (400) is in communication with the oil storage chamber (01).

2. The transformer oil rapid degassing device according to claim 1, characterized in that: A first valve (500) is provided between the oil inlet pipe (100) and the main body (21), a second valve (600) is provided between the gas filling assembly (300) and the main body (21), and a third valve (700) is provided between the gas extraction assembly (400) and the main body (21); The oil inlet pipe (100) can be selectively connected to the oil storage chamber (01) through the first valve (500), the gas filling assembly (300) can be selectively connected to the oil storage chamber (01) through the second valve (600), and the gas extraction assembly (400) can be selectively connected to the oil storage chamber (01) through the third valve (700).

3. The transformer oil rapid degassing device according to claim 2, characterized in that: The first valve (500) is a two-way valve, and the second valve (600) and the third valve (700) are both one-way valves. The connection direction of the second valve (600) is from the gas filling component (300) toward the main body (21), and the connection direction of the third valve (700) is from the main body (21) toward the gas extraction component (400).

4. The transformer oil rapid degassing device according to claim 1, characterized in that: The gas filling assembly (300) comprises a gas storage bottle (31) and a fourth valve (32), wherein the gas storage bottle (31) is connected to the main body (21), and the fourth valve (32) is connected to the gas storage bottle (31), and the fourth valve (32) is used to connect to an external gas source.

5. The transformer oil rapid degassing device according to claim 4, characterized in that: The fourth valve (32) is a one-way valve, and the fourth valve (32) is connected to the interior of the gas storage bottle (31).

6. The transformer oil rapid degassing device according to claim 1, characterized in that: The piston assembly (22) comprises a piston head (221) and a piston rod (222), wherein the piston head (221) is connected to the piston rod (222), and the piston rod (222) is connected to the output end of the motor (23), and the outer periphery of the piston head (221) is tightly sealed against the inner wall of the oil storage chamber (01), and the piston head (221) can move in the radial direction of the oil storage chamber (01); The motor (23) is used to drive the piston rod (222) to drive the piston head (221) to move along the radial direction of the oil storage chamber (01).

7. The transformer oil rapid degassing device according to claim 6, characterized in that: The piston rod (222) is a threaded rod. The piston rod (222) is inserted into the main body (21) and is threadedly connected to the main body (21). The motor (23) is used to drive the piston rod (222) to rotate.

8. The transformer oil rapid degassing device according to claim 1, characterized in that: The gas extraction assembly (400) comprises a gas extraction cylinder (41) and a gas extraction piston (42); a gas extraction cavity (02) is provided inside the gas extraction cylinder (41); and the gas extraction piston (42) is at least partially movably disposed inside the gas extraction cavity (02).

9. The transformer oil rapid degassing device according to claim 1, characterized in that: The transformer oil rapid degassing device also includes a pressure gauge (800), which is arranged on the main body (21) and is connected to the oil storage cavity (01) to detect the air pressure inside the oil storage cavity (01).

10. A method for degassing transformer oil, characterized in that: The transformer oil degassing method adopts the transformer oil rapid degassing device described in claim 1, and the transformer oil degassing method comprises: The oil inlet pipe (100) is immersed under the liquid level of the transformer oil, the motor (23) is started to drive the piston assembly (22) to move so that a negative pressure state is formed inside the oil storage chamber (01), and then a predetermined amount of transformer oil is introduced into the oil storage chamber (01), and then the pipeline of the oil inlet pipe (100) is sealed, and then the motor (23) is started again to form a continuous negative pressure environment inside the oil storage chamber (01). Under the negative pressure environment, the gas in the transformer oil is precipitated. After the precipitation is completed, the gas adding assembly (300) is used to introduce inert gas into the oil storage chamber (01) to balance the air pressure. After the air pressure is balanced, the gas inside the oil storage chamber (01) is extracted by the gas extraction assembly (400) to carry out a transformer oil chromatography experiment.

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