A device and method for online monitoring of dissolved gas in transformer oil

Abstract

The present invention provides an online monitoring device and method for dissolved gas in transformer oil, which belongs to the technical field of power equipment monitoring, and includes a storage part, an oil-gas separation part, a detection part, an elastic support part and a knocking part. The storage part is provided with a detection area and an oil-gas separation area, the detection area and the oil-gas separation area are interconnected, the detection part is arranged inside the detection area, the oil-gas separation part is arranged inside the oil-gas separation area, the elastic support part and the knocking part are both arranged inside the oil-gas separation area, the elastic support part is used to provide elastic support for the oil-gas separation part, the side wall of the storage part is connected with an oil inlet pipe, and the oil inlet pipe is used to transport gearbox oil to the oil-gas separation part for oil-gas separation. Compared with the prior art, the embodiments of the present invention can improve the oil-gas separation effect and improve the accuracy and reliability of the detection results of the detection part.

Description

Technical Field

[0001] The invention belongs to the technical field of power equipment monitoring, and in particular relates to an online monitoring device and method for dissolved gas in transformer oil. Background Art

[0002] As the main equipment of the power system, the operating reliability of the transformer directly affects the safety and stability of the power system. The composition and content of the dissolved gas in the transformer oil can effectively reflect the insulation fault situation inside the operating transformer. Therefore, the analysis method of dissolved gas in transformer oil has become an effective monitoring method for the power system to diagnose faults of oil-immersed power equipment.

[0003] In the prior art, when analyzing the composition and content of dissolved gas in transformer oil, it is often necessary to separate oil and gas first. Most of the existing oil and gas separation methods drive the gearbox oil through an oil retaining groove or a sieve plate, etc. During this process, the gas can be separated from the oil. However, studies have found that the oil after oil and gas separation still contains a small amount of gas, which cannot be separated from the oil smoothly, resulting in inaccurate results when detecting the gas. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the embodiments of the present invention is to provide an online monitoring device and method for dissolved gas in transformer oil.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] An online monitoring device and method for dissolved gas in transformer oil comprises a storage part, an oil-gas separation part, a detection part, an elastic support part and a knocking part.

[0007] A detection area and an oil-gas separation area are provided inside the storage part, the detection area and the oil-gas separation area are connected to each other, the detection part is arranged inside the detection area, and the oil-gas separation part is arranged inside the oil-gas separation area.

[0008] The elastic support part and the knocking part are both arranged inside the oil-gas separation area, and the elastic support part is used to provide elastic support for the oil-gas separation part.

[0009] The side wall of the storage part is connected with an oil inlet pipe, and the oil inlet pipe is used to transport the transmission oil to the oil-gas separation part for oil-gas separation. The separated gas can enter the detection area and be detected by the detection part. The separated oil falls into the oil-gas separation part to drive the oil-gas separation part to move. When the oil-gas separation part moves, the knocking part acts on the side wall of the oil-gas separation part to cause the oil-gas separation part to vibrate.

[0010] As a further improvement of the present invention: the oil-gas separation unit includes an oil storage tank and an oil dispersion net,

[0011] The oil storage tank is open at one side facing the detection area, and the oil dispersion net is encapsulated at the open portion. The transmission oil output through the oil inlet pipe can pass through the oil dispersion net and enter the interior of the oil storage tank.

[0012] As a further improvement of the present invention: the side wall of the oil storage tank is fixedly provided with an ear plate, and the storage part is fixedly provided with a bracket.

[0013] The elastic support portion includes a guide rod and a first elastic member. The guide rod is fixedly arranged on one side of the bracket, and one end of the guide rod away from the bracket passes through the ear plate and movably cooperates with the ear plate. One end of the first elastic member is connected to the bracket, and the other end is connected to the ear plate.

[0014] As a further improvement of the present invention: the knocking part includes a support rod and a touch-pressure rod,

[0015] The support rod is slidably arranged on one side of the bracket, one side of the support rod is connected to the inner wall of the storage part through a second elastic member, the pressure contact rod is fixedly arranged on one end of the support rod away from the bracket, one side of the support rod is also provided with a plurality of first protrusions distributed at intervals, an extension rod is fixedly arranged on the side wall of the oil storage tank, and a connecting rod is fixedly arranged on one side of the extension rod.

[0016] When the oil storage tank moves, the extension rod and the connecting rod can be driven to move synchronously. The connecting rod can act on the first protrusion. By utilizing the supporting effect of the second elastic member, the touch-pressure rod can be driven to move back and forth to realize the knocking vibration of the oil storage tank.

[0017] As a further improvement of the present invention: a plurality of flow blocking parts are fixedly arranged inside the oil storage tank, and when the oil storage tank vibrates, the flow blocking parts can stir the oil.

[0018] As a further improvement of the present invention: the blocking portion includes a blocking rod fixedly arranged inside the oil storage tank, and a plurality of second protrusions are fixedly arranged on the blocking rod.

[0019] As a further improvement of the present invention: an oil drain port is provided on the side wall of the oil storage tank, a sealing plate which can be opened to one side is hingedly arranged inside the oil drain port, a push rod corresponding to the position of the oil drain port is fixedly arranged on one side of the bracket, when the oil storage tank moves, the push rod can be inserted into the oil drain port and drive the sealing plate to open, and the oil inside the oil storage tank can be discharged from the oil drain port.

[0020] As a further improvement of the present invention: a deceleration component is further provided inside the storage portion, and the deceleration component is used to overcome the supporting force of the first elastic member to slow down the reverse movement speed of the oil storage tank.

[0021] As a further improvement of the present invention: the deceleration component includes a first magnet fixedly arranged on the side wall of the oil storage tank and a second magnet fixedly arranged on one side of the bracket, and the first magnet and the second magnet can attract each other.

[0022] The invention discloses an online monitoring method for dissolved gas in transformer oil. The method comprises the following steps: using a pump assembly to pump gearbox oil from an oil inlet pipe to an interior of a storage part. The gearbox oil is output through the oil inlet pipe and acts on an oil-gas separation part. After the gearbox oil is separated by the oil-gas separation part, the gas can float to the interior of a detection area, and the detection part performs component detection, while the oil can fall into the interior of the oil-gas separation part. With the increase of the oil, the weight of the oil-gas separation part gradually increases. With the support of an elastic support part, the oil-gas separation part moves inside the oil-gas separation area. During the movement of the oil-gas separation part, a knocking part can act on a side wall of the oil-gas separation part, causing the oil-gas separation part to vibrate, thereby vibrating the oil inside the oil-gas separation part, so that a small amount of unseparated gas in the oil can escape from the oil.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] During monitoring, the embodiment of the present invention delivers the transmission oil to the oil-gas separation part through the oil inlet pipe. After the transmission oil is separated by the oil-gas separation part, the gas can float to the inside of the detection area, and the detection part performs component detection, while the oil can fall into the oil-gas separation part. As the amount of oil increases, the weight of the oil-gas separation part gradually increases. With the support of the elastic support part, the oil-gas separation part moves inside the oil-gas separation area. During the movement of the oil-gas separation part, the knocking part can act on the side wall of the oil-gas separation part, causing the oil-gas separation part to vibrate, thereby vibrating the oil located inside the oil-gas separation part, so that a small amount of unseparated gas in the oil can escape from the oil. Compared with the prior art, the oil-gas separation effect can be improved, and the accuracy and reliability of the detection results of the detection part can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of an online monitoring device for dissolved gas in transformer oil;

[0026] Figure 2 It is a structural schematic diagram of an oil-gas separation part in an online monitoring device for dissolved gas in transformer oil;

[0027] Figure 3 for Figure 1 A magnified schematic diagram of the middle A area;

[0028] Figure 4 for Figure 1 A magnified schematic diagram of the middle B area;

[0029] In the figure: 1-storage part, 11-bracket, 111-top rod, 12-oil inlet pipe, 13-detection area, 14-oil-gas separation area, 2-oil-gas separation part, 21-extension rod, 22-oil storage tank, 23-ear plate, 24-oil dispersion net, 25-connecting rod, 26-oil drain port, 27-sealing plate, 3-gas detection part, 4-elastic support part, 41-guide rod, 42-first elastic member, 5-knocking part, 51-touch pressure rod, 52-support rod, 53-first protrusion, 54-second elastic member, 6-blocking part, 61-blocking rod, 62-second protrusion, 7-deceleration component, 71-first magnet, 72-second magnet. DETAILED DESCRIPTION

[0030] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying 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 a limitation on this patent.

[0033] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0034] See also Figure 1The present embodiment provides an online monitoring device for dissolved gas in transformer oil, comprising a storage portion 1, an oil-gas separation portion 2, a detection portion 3, an elastic support portion 4 and a knocking portion 5. The storage portion 1 is provided with a detection area 13 and an oil-gas separation area 14, the detection area 13 and the oil-gas separation area 14 are interconnected, the detection portion 3 is arranged in the detection area 13, the oil-gas separation portion 2 is arranged in the oil-gas separation area 14, the elastic support portion 4 and the knocking portion 5 are both arranged in the oil-gas separation area 1 4, the elastic support part 4 is used to provide elastic support for the oil-gas separation part 2, the side wall of the storage part 1 is connected with an oil inlet pipe 12, the oil inlet pipe 12 is used to transport the transmission oil to the oil-gas separation part 2 for oil-gas separation, the separated gas can enter the detection area 13 to be detected by the detection part 3, the separated oil falls into the oil-gas separation part 2 to drive the oil-gas separation part 2 to move, when the oil-gas separation part 2 moves, the knocking part 5 acts on the side wall of the oil-gas separation part 2 to cause the oil-gas separation part 2 to vibrate.

[0035] In one embodiment, a method for online monitoring of dissolved gas in transformer oil is provided. A pump assembly is used to pump gearbox oil from an oil inlet pipe 12 to the interior of a storage portion 1. The gearbox oil is output through the oil inlet pipe 12 and acts on an oil-gas separation portion 2. After the gearbox oil is separated by the oil-gas separation portion 2, the gas can float to the interior of a detection area 13, and the detection portion 3 performs component detection, while the oil can fall into the interior of the oil-gas separation portion 2. As the amount of oil increases, the weight of the oil-gas separation portion 2 gradually increases. With the support of the elastic support portion 4, the oil-gas separation portion 2 moves inside the oil-gas separation area 14. During the movement of the oil-gas separation portion 2, the knocking portion 5 can act on the side wall of the oil-gas separation portion 2, causing the oil-gas separation portion 2 to vibrate, causing the oil inside the oil-gas separation portion 2 to vibrate, so that a small amount of unseparated gas in the oil can escape from the oil, thereby improving the oil-gas separation effect and improving the accuracy and reliability of the detection result of the detection portion 3.

[0036] See also Figure 1 In one embodiment, the oil-gas separation unit 2 includes an oil storage tank 22 and an oil dispersion net 24. The oil storage tank 22 is open on one side facing the detection area 13, and the oil dispersion net 24 is encapsulated in the open position. The transmission oil output through the oil inlet pipe 12 can pass through the oil dispersion net 24 and enter the interior of the oil storage tank 22.

[0037] When the gearbox oil passes through the oil dispersion net 24, the gas therein can be separated from the oil. The separated gas enters the detection area 13 and is detected by the detection unit 3. The separated oil enters the oil storage tank 22, causing the weight of the oil storage tank 22 to increase, thereby driving the oil storage tank 22 to move.

[0038] In another embodiment, the oil-gas separation unit 2 may further include an oil storage cylinder, which has a plurality of evenly distributed through holes on one side of the oil storage cylinder facing the detection area 13. The transmission oil output through the oil inlet pipe 12 may pass through the through holes and enter the oil storage cylinder. When the transmission oil passes through the through holes, the gas therein may be separated from the oil. The separated gas enters the detection area 13 and is detected for its components by the detection unit 3. The separated oil enters the oil storage cylinder, causing an increase in the weight of the oil storage cylinder, thereby driving the oil storage cylinder to move.

[0039] See also Figure 1 In one embodiment, an ear plate 23 is fixedly provided on the side wall of the oil storage tank 22, a bracket 11 is fixedly provided inside the storage portion 1, the elastic support portion 4 includes a guide rod 41 and a first elastic member 42, the guide rod 41 is fixedly provided on one side of the bracket 11, and one end of the guide rod 41 away from the bracket 11 passes through the ear plate 23 and movably cooperates with the ear plate 23, one end of the first elastic member 42 is connected to the bracket 11, and the other end is connected to the ear plate 23.

[0040] As the weight of the oil storage tank 22 increases, the oil storage tank 22 can drive the ear plate 23 to move along the guide rod 41 , and the first elastic member 42 can provide elastic support to the ear plate 23 .

[0041] In another embodiment, a slider is fixedly provided on the side wall of the oil storage tank 22, a guide rail is installed on the inner wall of the storage portion 1, the slider is slidably matched with the guide rail, a base is fixedly provided at one end of the guide rail, the elastic support portion 4 includes a spring, one end of the spring is connected to the base, and the other end is connected to the slider, and the sliding cooperation between the slider and the guide rail can make the oil storage tank 22 move smoothly when the weight increases.

[0042] See also Figure 1 and Figure 3 In one embodiment, the knocking part 5 includes a support rod 52 and a touch-pressure rod 51, the support rod 52 is slidably arranged on one side of the bracket 11, one side of the support rod 52 is connected to the inner wall of the storage part 1 through a second elastic member 54, the touch-pressure rod 51 is fixedly arranged on the end of the support rod 52 away from the bracket 11, and one side of the support rod 52 is also provided with a plurality of first protrusions 53 distributed at intervals, an extension rod 21 is fixedly arranged on the side wall of the oil storage tank 22, and a connecting rod 25 is fixedly arranged on one side of the extension rod 21. When the oil storage tank 22 moves, the extension rod 21 and the connecting rod 25 can be driven to move synchronously, and the connecting rod 25 can act on the first protrusion 53. By utilizing the supporting effect of the second elastic member 54, the touch-pressure rod 51 can be driven to move back and forth to realize the knocking vibration of the oil storage tank 22.

[0043] When the weight of the oil storage tank 22 increases, the oil storage tank 22 can drive the extension rod 21 and the connecting rod 25 to move. When the connecting rod 25 acts on a certain first protrusion 53, it can drive the support rod 52 to move away from the oil storage tank 22. When the connecting rod 25 passes over the current first protrusion 53, the second elastic member 54 drives the support rod 52 to move toward the oil storage tank 22, so as to drive the contact pressure rod 51 to move synchronously. The contact pressure rod 51 can hit the side wall of the oil storage tank 22 to achieve the knocking of the oil storage tank 22, thereby causing the oil storage tank 22 and the oil inside it to vibrate, so that a small amount of gas that has not been separated in the oil escapes, thereby achieving further separation of oil and gas.

[0044] In another embodiment, the knocking part 5 may also include a spring piece hingedly arranged on one side of the bracket 11 and a plurality of first magnetic pieces arranged at intervals on one side of the spring piece. A rod is fixedly arranged on the side wall of the oil storage tank 22, and a second magnetic piece that repels the first magnetic piece is arranged on the side wall of the rod. One side of the spring piece is connected to the bracket 11 by a spring. When the oil storage tank 2 moves, the rod can be driven to move. When the second magnetic piece on one side of the rod moves to a position corresponding to the first magnetic piece, the repulsive effect between the second magnetic piece and the first magnetic piece is used to drive the spring piece away from the oil storage tank 22. When the second magnetic piece is removed from the side of the first magnetic piece, the spring can drive the spring piece to rotate toward the oil storage tank 22, thereby hitting the oil storage tank 22 to cause vibration of the oil storage tank 22 and the oil inside it.

[0045] In one embodiment, the first elastic member 42 and the second elastic member 54 are both springs or metal springs.

[0046] See also Figure 2 In one embodiment, in order to increase the contact area between the transmission oil and the oil dispersion net 24, the oil dispersion net 24 is in a conical bucket-shaped structure.

[0047] See also Figure 1 In one embodiment, a plurality of flow blocking parts 6 are fixedly provided inside the oil storage tank 22. When the oil storage tank 22 vibrates, the flow blocking parts 6 can stir the oil to further improve the oil-gas separation effect.

[0048] See also Figure 4 In one embodiment, the blocking portion 6 includes a blocking rod 61 fixedly arranged inside the oil storage tank 22, and a plurality of second protrusions 62 are fixedly arranged on the blocking rod 61. Through the arrangement of the blocking rod 61 and the second protrusions 62, when the oil storage tank 22 and the oil inside it vibrate, the blocking rod 61 and the second protrusions 62 can stir the oil so that the gas in the oil can overflow better.

[0049] In another embodiment, the flow blocking portion 6 may further include a partition net disposed inside the oil storage tank 22, and the oil may also be stirred by the provision of the partition net.

[0050] See also Figure 1 In one embodiment, the storage unit 1 is a box-type or tank-type structure, and the detection unit 3 is a gas chromatograph detector. There is no limitation on the specific model and manufacturer, and technicians in this field can make reasonable choices according to their needs.

[0051] See also Figure 1 and Figure 4 In one embodiment, an oil drain port 26 is provided on the side wall of the oil storage tank 22, and a sealing plate 27 which can be opened to one side is hingedly provided inside the oil drain port 26. A push rod 111 corresponding to the position of the oil drain port 26 is fixedly provided on one side of the bracket 11. When the oil storage tank 22 moves, the push rod 111 can be inserted into the oil drain port 26 and drive the sealing plate 7 to open, so that the oil inside the oil storage tank 22 can be discharged from the oil drain port 26.

[0052] See also Figure 1 In one embodiment, a deceleration component 7 is further provided inside the storage portion 1, and the deceleration component 7 is used to overcome the supporting force of the first elastic member 42 to slow down the reverse movement speed of the oil storage tank 22, so that after the sealing plate 27 is opened, the oil storage tank 22 can stay in this position for a certain period of time, ensuring that the sealing plate 27 can obtain sufficient opening time to ensure the complete discharge of the oil.

[0053] See also Figure 1 In one embodiment, the deceleration component 7 includes a first magnet 71 fixedly arranged on the side wall of the oil storage tank 22 and a second magnet 72 fixedly arranged on one side of the bracket 11, and the first magnet 71 and the second magnet 72 can attract each other.

[0054] When the oil storage tank 22 moves, the first magnet 71 can be driven to move. After the sealing plate 27 is opened, the suction force between the first magnet 71 and the second magnet 72 is used to overcome the supporting force of the first elastic member 42, thereby preventing the oil storage tank 22 from moving in the opposite direction due to the reduction in weight after a part of the oil inside the oil storage tank 22 is discharged, causing the sealing plate 27 to re-seal the oil drain port 26, resulting in the inability to completely discharge the oil.

[0055] In another embodiment, the deceleration component 7 may also include an insertion rod fixedly arranged on the side wall of the oil storage tank 22 and an insertion cylinder fixedly arranged on one side of the bracket 11. When the oil storage tank 22 moves, the insertion rod can be driven to move. After the sealing plate 27 is opened, the insertion rod can be inserted into the insertion cylinder. The damping effect between the insertion rod and the insertion cylinder is used to overcome the supporting force of the first elastic member 42 to ensure the complete discharge of the oil.

[0056] During monitoring, the embodiment of the present invention delivers the transmission oil to the oil-gas separation part 2 through the oil inlet pipe 12. After the transmission oil is separated by the oil-gas separation part 2, the gas can float to the inside of the detection area 13, and the detection part 3 performs component detection, while the oil can fall into the inside of the oil-gas separation part 2. As the amount of oil increases, the weight of the oil-gas separation part 2 gradually increases. With the support of the elastic support part 4, the oil-gas separation part 2 moves inside the oil-gas separation area 14. During the movement of the oil-gas separation part 2, the knocking part 5 can act on the side wall of the oil-gas separation part 2, causing the oil-gas separation part 2 to vibrate, so that the oil located inside the oil-gas separation part 2 vibrates, so that a small amount of unseparated gas in the oil can escape from the oil. Compared with the prior art, the oil-gas separation effect can be improved, and the accuracy and reliability of the detection results of the detection part 3 can be improved.

[0057] The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. An online monitoring device for dissolved gas in transformer oil, characterized in that: It includes a storage part, an oil-gas separation part, a detection part, an elastic support part and a knocking part. A detection area and an oil-gas separation area are provided inside the storage part, the detection area and the oil-gas separation area are connected to each other, the detection part is arranged inside the detection area, and the oil-gas separation part is arranged inside the oil-gas separation area. The elastic support part and the knocking part are both arranged inside the oil-gas separation area, and the elastic support part is used to provide elastic support for the oil-gas separation part. The side wall of the storage part is connected with an oil inlet pipe, and the oil inlet pipe is used to transport the transmission oil to the oil-gas separation part for oil-gas separation. The separated gas can enter the detection area and be detected by the detection part. The separated oil falls into the oil-gas separation part to drive the oil-gas separation part to move. When the oil-gas separation part moves, the knocking part acts on the side wall of the oil-gas separation part to cause the oil-gas separation part to vibrate.

2. The on-line monitoring device for dissolved gas in transformer oil according to claim 1, characterized in that: The oil-gas separation unit includes an oil storage tank and an oil dispersion net. The oil storage tank is open at one side facing the detection area, and the oil dispersion net is encapsulated at the open portion. The transmission oil output through the oil inlet pipe can pass through the oil dispersion net and enter the interior of the oil storage tank.

3. The on-line monitoring device for dissolved gas in transformer oil according to claim 2, characterized in that: The side wall of the oil storage tank is fixedly provided with an ear plate, and the storage part is fixedly provided with a bracket. The elastic support portion includes a guide rod and a first elastic member. The guide rod is fixedly arranged on one side of the bracket, and one end of the guide rod away from the bracket passes through the ear plate and movably cooperates with the ear plate. One end of the first elastic member is connected to the bracket, and the other end is connected to the ear plate.

4. The on-line monitoring device for dissolved gas in transformer oil according to claim 3, characterized in that: The knocking part includes a support rod and a contact pressure rod. The support rod is slidably arranged on one side of the bracket, one side of the support rod is connected to the inner wall of the storage part through a second elastic member, the pressure contact rod is fixedly arranged on one end of the support rod away from the bracket, one side of the support rod is also provided with a plurality of first protrusions distributed at intervals, an extension rod is fixedly arranged on the side wall of the oil storage tank, and a connecting rod is fixedly arranged on one side of the extension rod. When the oil storage tank moves, the extension rod and the connecting rod can be driven to move synchronously. The connecting rod can act on the first protrusion. By utilizing the supporting effect of the second elastic member, the touch-pressure rod can be driven to move back and forth to realize the knocking vibration of the oil storage tank.

5. The on-line monitoring device for dissolved gas in transformer oil according to claim 4, characterized in that: A plurality of flow-blocking parts are fixedly arranged inside the oil storage tank, and when the oil storage tank vibrates, the flow-blocking parts can stir the oil.

6. The on-line monitoring device for dissolved gas in transformer oil according to claim 5, characterized in that: The blocking portion comprises a blocking rod fixedly arranged inside the oil storage tank, and a plurality of second protrusions are fixedly arranged on the blocking rod.

7. The on-line monitoring device for dissolved gas in transformer oil according to claim 3, characterized in that: An oil drain port is provided on the side wall of the oil storage tank, and a sealing plate which can be opened to one side is hingedly arranged inside the oil drain port. A push rod corresponding to the position of the oil drain port is fixedly arranged on one side of the bracket. When the oil storage tank moves, the push rod can be inserted into the oil drain port and drive the sealing plate to open, so that the oil inside the oil storage tank can be discharged from the oil drain port.

8. The on-line monitoring device for dissolved gas in transformer oil according to claim 7, characterized in that: A deceleration component is also provided inside the storage portion, and the deceleration component is used to overcome the supporting force of the first elastic member to slow down the reverse movement speed of the oil storage tank.

9. The on-line monitoring device for dissolved gas in transformer oil according to claim 8, characterized in that: The deceleration component includes a first magnet fixedly arranged on the side wall of the oil storage tank and a second magnet fixedly arranged on one side of the bracket, and the first magnet and the second magnet can attract each other.

10. A method for online monitoring of dissolved gas in transformer oil, characterized in that: The pump assembly is used to pump the transmission oil from the oil inlet pipe to the storage part, the transmission oil is output through the oil inlet pipe and acts on the oil-gas separation part. After the transmission oil is separated by the oil-gas separation part, the gas can float to the inside of the detection area, and the detection part performs component detection; the oil can fall into the oil-gas separation part, and as the oil increases, the weight of the oil-gas separation part gradually increases, and with the supporting effect of the elastic support part, the oil-gas separation part moves inside the oil-gas separation area. During the movement of the oil-gas separation part, the knocking part can act on the side wall of the oil-gas separation part, causing the oil-gas separation part to vibrate, so that a small amount of unseparated gas in the oil can escape from the oil.

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