Online monitoring device for gas in transformer oil

Abstract

The invention discloses an on-line monitoring device for gas in transformer oil, and relates to the field of monitoring of gas in transformer oil, the on-line monitoring device comprises a transformer body, a pump machine, an oil inlet pipe, a fixed box and an oil return pipe, and an electric telescopic rod is fixed on the upper end face of the transformer body. According to the on-line monitoring device for the gas in the transformer oil, a negative pressure suction structure is adopted, gas dissolved in isolation oil liquid can be rapidly separated out, and the separated gas can be detected and analyzed in cooperation with the effect of a laser chromatograph so that whether a transformer has a fault or not can be judged, and the specific content is that the device is convenient to operate. Oil liquid can enter the fixing box through a pump machine and an oil return pipe, gas in the oil liquid in the fixing box is rapidly separated out through cooperation with the effects of an electric telescopic rod, a fixing rod, a U-shaped block, a piston and a fixing cavity, and after gas extraction is completed, when the piston is reset, through cooperation with the effects of a partition plate, a first spring, a fixing plate and a sealing head, the gas in the oil liquid is rapidly separated out. And the gas in the fixed cavity can enter the laser chromatograph, so that the detection and analysis of the gas are realized.

Description

Technical Field

[0001] The invention relates to the technical field of transformer oil gas monitoring, in particular to an online transformer oil gas monitoring device. Background Art

[0002] As one of the important power equipment in the power system, the operating status of the oil-immersed transformer directly affects the reliability and safety of the power supply of the power system. When the transformer fails, the dissolved concentration of various gases in the transformer oil is an important indicator of the transformer failure. Therefore, it is necessary to monitor the gas in the transformer oil to monitor whether the transformer is operating normally. Existing online monitoring devices for gas in transformer oil, such as an online monitoring device for gas in transformer oil with publication number CN216816681U, mainly realize detection by contacting a detection head with the oil in the transformer. Due to the difference in the dissolved concentration of gas in the oil, it is difficult to ensure the accuracy of the detection. Therefore, in view of the above problems, an online monitoring device for gas in transformer oil is designed to better meet the actual use needs. Summary of the invention

[0003] The object of the present invention is to provide an online monitoring device for gas in transformer oil to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an online monitoring device for gas in transformer oil, comprising a transformer body, a pump, an oil inlet pipe, a fixed box and an oil return pipe, an electric telescopic rod is fixed to the upper end surface of the transformer body, a fixed rod is fixed to the output end of the electric telescopic rod, a gas separation mechanism is also fixed to the upper end surface of the transformer body, a sealing mechanism is installed in the fixed box, and the oil inlet and oil outlet of the fixed box are sealed by the sealing mechanism, a stirring mechanism is also installed in the fixed box, the gas separation mechanism comprises a fixed chamber, a piston, a lever, a U-shaped block, a partition, a sliding rod, a first spring, a fixed plate, a sealing head and a negative pressure sensor, the fixed chamber is fixed to the fixed box, and the fixed chamber is a "T"-shaped structure, and the fixed chamber is connected to the fixed box, a laser chromatograph is fixed on the fixed chamber, and the fixed A piston is slidably connected to the transverse cavity of the fixed cavity, and a lever is fixed on the right end of the piston, and the lever is arranged in the groove of the U-shaped block, and the U-shaped block is fixed on the fixed rod. Two partitions are fixed in the vertical cavity of the fixed cavity, and a sliding rod is slidably connected to the partition, and a first spring is fixed between the sliding rod and the partition, and a fixed plate is fixed on the sliding rod, and a sealing head is fixed on the lower end surface of the fixed plate, and the sealing head cooperates with the opening on the partition to achieve sealing, and a negative pressure sensor is fixed in the fixed cavity, and the fixed rod and the U-shaped block are driven to move by the electric telescopic rod, and the lever and the piston are forced to move through the U-shaped block, and the lower side sealing head is separated from the opening on the partition under the action of air pressure, and the sealing mechanism is cooperated to form a sealed state inside the fixed box, thereby forming a negative pressure state in the fixed box, so that the gas in the transformer oil in the fixed box is quickly precipitated.

[0005] Preferably, a pump is fixed on the right end face of the transformer body, the pump is connected to a fixed box through an oil inlet pipe, the fixed box is fixed on the transformer body, and the fixed box is connected to the transformer body through an oil return pipe. Through the above structure, the oil can circulate in the transformer body and the fixed box, thereby providing a basic guarantee for the separation of gas in the oil.

[0006] Preferably, the sealing mechanism includes a cross bar, an inclined panel, a round rod, a vertical rod, a guide rod, a second spring, a connecting rod, a movable plate and a sealing plug. One end of the cross bar is fixedly connected to the fixed rod, and the cross bar is slidably connected to the fixed box, and the other end of the cross bar is fixed to the inclined panel. The cross bar is driven to move by the fixed rod, which can provide a basic force for the movement of the inclined panel.

[0007] Preferably, the inclined panel and the round rod are slidably connected, and the round rod is fixed in a fixed box, and the round rod and the vertical rod are slidably connected. When the inclined panel moves, the sliding guiding action between the inclined panel and the round rod can ensure the stability of the movement of the inclined panel, and the sliding action between the round rod and the vertical rod can provide a basic force for the movement of the vertical rod.

[0008] Preferably, the vertical rod and the guide rod are slidably connected, and the guide rod is fixed in a fixed box. A second spring is fixed between the vertical rod and the fixed box. When the vertical rod moves, the stability of the vertical rod movement can be ensured by the sliding guiding action between the vertical rod and the guide rod. Combined with the elastic action of the second spring, a basic force can be provided for the automatic resetting of the vertical rod.

[0009] Preferably, the vertical rod is rotatably connected to one end of the connecting rod, and the other end of the connecting rod is rotatably connected to the movable plate, and the movable plate and the guide rod are slidably connected. When the vertical rod moves, the transmission action of the connecting rod can provide a basic force for the movement of the movable plate.

[0010] Preferably, a sealing plug is fixed on the movable plate, and the sealing plug cooperates with the side opening of the fixed box to achieve sealing. Through the sealing effect between the sealing plug and the side opening of the fixed box, a sealed space can be formed inside the fixed box, thereby providing a basic guarantee for achieving gas separation in oil.

[0011] Preferably, the stirring mechanism includes a rotating shaft, a stirring rod, a gear and a convex tooth plate. The rotating shaft bearing is connected to the fixed box, and the rotating shaft is symmetrically distributed front and back about the center line of the rotating shaft, and a stirring rod is fixed on the rotating shaft. Through the action of the stirring rod, the oil in the fixed box can be stirred, so that the gas in the oil in the fixed box can be quickly precipitated.

[0012] Preferably, the stirring rods are evenly spaced on the rotating shaft, and the length of the stirring rods is less than the distance between the rotating shaft and the second spring. By limiting the length of the stirring rods, the stirring rods are prevented from contacting the second spring and hindering the normal operation of the device.

[0013] Preferably, a gear is also fixed on the rotating shaft, and the gear cooperates with the convex tooth plate to realize transmission, and the convex tooth plate is symmetrically fixed on the inclined plate front and back. When the inclined plate moves to drive the convex tooth plate to move, the meshing transmission action between the convex tooth plate and the gear can provide a basic force for the rotation of the rotating shaft to ensure the normal operation of the device.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The on-line monitoring device for gas in transformer oil adopts a negative pressure suction structure, which can make the gas dissolved in the isolation oil liquid precipitate quickly. With the action of the laser chromatograph, the precipitated gas can be detected and analyzed to determine whether the transformer has a fault. Specifically, the oil liquid can enter the fixed box through the pump and the oil return pipe, and the sealing mechanism is used to seal the oil port on the fixed box, so that the fixed box forms a sealed space. With the action of the electric telescopic rod, the fixed rod, the U-shaped block, the piston and the fixed cavity, the air extraction effect can be achieved, so that a negative pressure state is formed in the fixed box, so that the gas in the oil liquid in the fixed box is quickly precipitated. After the air extraction is completed, when the piston is reset, with the action of the partition plate, the first spring, the fixed plate and the sealing head, the gas in the fixed cavity can enter the laser chromatograph, so as to realize the detection and analysis of the gas. 2. The transformer oil gas online monitoring device can form a sealed space in the fixed box through a linked sealing mechanism when separating the gas in the oil in the fixed box, thereby ensuring the normal operation of the device. Specifically, the inclined plate is moved through the action of the electric telescopic rod, the fixed rod and the cross rod, and the movable plate and the sealing plug are moved in coordination with the action of the inclined plate, the vertical rod and the connecting rod. The upper oil port of the fixed box is sealed through the sealing plug, thereby ensuring that the fixed box is maintained in a sealed state when the gas is extracted, so as to facilitate the subsequent separation of the gas. 3. The transformer oil gas online monitoring device can stir the oil when separating the gas in the oil in the fixed box through the connected stirring mechanism, thereby further accelerating the gas precipitation. Specifically, when the inclined plate drives the convex tooth plate to move, the convex tooth plate and the gear are coordinated to make the rotating shaft and the stirring rod rotate, thereby realizing the oil stirring effect and facilitating the rapid precipitation of gas in the oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall side view of the stereoscopic structure of the device of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the fixing box of the present invention from a side view; Figure 3 It is a schematic diagram of the front cross-sectional three-dimensional structure of the fixing box of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the fixed cavity of the present invention when viewed from above; Figure 5 This is a schematic diagram of an exploded three-dimensional structure composed of a partition plate and a sealing head of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the sealing mechanism and the stirring mechanism of the present invention.

[0016] In the figure: 1. transformer body; 2. pump; 3. oil inlet pipe; 4. fixed box; 5. oil return pipe; 6. electric telescopic rod; 7. fixed rod; 8. gas separation mechanism; 801. fixed chamber; 802. piston; 803. lever; 804. U-shaped block; 805. partition; 806. slide rod; 807. first spring; 808. fixed plate; 809. sealing head; 810. negative pressure sensor; 9. laser chromatograph; 10. sealing mechanism; 1001. cross bar; 1002. inclined plate; 1003. round rod; 1004. vertical rod; 1005. guide rod; 1006. second spring; 1007. connecting rod; 1008. movable plate; 1009. sealing plug; 11. stirring mechanism; 1101. rotating shaft; 1102. stirring rod; 1103. gear; 1104. convex tooth plate. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-Figure 6 The present invention provides a technical solution: an online monitoring device for gas in transformer oil, comprising a transformer body 1, a pump 2, an oil inlet pipe 3, a fixed box 4 and an oil return pipe 5, an electric telescopic rod 6 is fixed to the upper end surface of the transformer body 1, a fixed rod 7 is fixed to the output end of the electric telescopic rod 6, a gas separation mechanism 8 is also fixed to the upper end surface of the transformer body 1, a sealing mechanism 10 is installed in the fixed box 4, the oil inlet and oil outlet of the fixed box 4 are sealed by the sealing mechanism 10, and a stirring mechanism 11 is also installed in the fixed box 4.

[0019] A pump 2 is fixed to the right end face of the transformer body 1, and the pump 2 is connected to the fixed box 4 through the oil inlet pipe 3, and the fixed box 4 is fixed on the transformer body 1, and the fixed box 4 is connected to the transformer body 1 through the oil return pipe 5; the sealing mechanism 10 includes a cross bar 1001, an inclined panel 1002, a round rod 1003, a vertical rod 1004, a guide rod 1005, a second spring 1006, a connecting rod 1007, a movable plate 1008 and a sealing plug 1009, one end of the cross bar 1001 is fixedly connected to the fixed rod 7, and the cross bar 1001 is slidably connected to the fixed box 4, and the other end of the cross bar 1001 is fixed to the inclined panel 1002; the inclined panel 1002 and the round rod 10 03 is in sliding connection, and the round rod 1003 is fixed in the fixed box 4, and the round rod 1003 and the vertical rod 1004 are in sliding connection; the vertical rod 1004 and the guide rod 1005 are in sliding connection, and the guide rod 1005 is fixed in the fixed box 4, and a second spring 1006 is fixed between the vertical rod 1004 and the fixed box 4; the vertical rod 1004 and one end of the connecting rod 1007 are rotatably connected, and the other end of the connecting rod 1007 is rotatably connected to the movable plate 1008, and the movable plate 1008 and the guide rod 1005 are in sliding connection; a sealing plug 1009 is fixed on the movable plate 1008, and the sealing plug 1009 cooperates with the side opening of the fixed box 4 to achieve sealing; When using the transformer oil gas online monitoring device, if Figure 1-Figure 6As shown, by controlling the pump 2 to start, in conjunction with the oil inlet pipe 3, part of the oil in the transformer body 1 is pumped into the fixed box 4, and in conjunction with the oil return pipe 5, the oil in the fixed box 4 can be returned into the transformer body 1, so that the oil circulates in the transformer body 1 and the fixed box 4. When it is necessary to detect the dissolved gas in the oil, it is only necessary to control the electric telescopic rod 6 to extend, thereby driving the fixed rod 7, the U-shaped block 804 and the cross bar 1001 to move, and the inclined plate 1002 is driven to move by the movement of the cross bar 1001. In conjunction with the sliding guide effect between the inclined plate 1002 and the round rod 1003, the stability of the movement of the inclined plate 1002 can be ensured. At this time, the inclined surface of the inclined plate 1002 contacts and slides with the vertical rod 1004, so that the vertical rod 1004 is affected When the vertical rod 1004 moves downward, the second spring 1006 contracts under the force. When the vertical rod 1004 moves downward, the sliding action between the vertical rod 1004 and the guide rod 1005 can ensure the stability of the movement of the vertical rod 1004. When the vertical rod 1004 moves, the transmission action of the connecting rod 1007 can be cooperated to make the movable plate 1008 and the sealing plug 1009 move. When the vertical rod 1004 slides from the inclined surface of the inclined plate 1002 to the lower end plane of the inclined plate 1002, the sealing plug 1009 just seals the oil inlet and outlet of the fixed box 4, so that a sealed space is formed in the fixed box 4. At this time, the left side convex block of the U-shaped block 804 just contacts the lever 803, that is, in the process of forming a sealed space in the fixed box 4, the lever 803 remains stationary and no air extraction operation is performed. The gas separation mechanism 8 includes a fixed chamber 801, a piston 802, a lever 803, a U-shaped block 804, a partition 805, a sliding rod 806, a first spring 807, a fixed plate 808, a sealing head 809 and a negative pressure sensor 810. The fixed chamber 801 is fixed to the fixed box 4, and the fixed chamber 801 is a "T"-shaped structure, and the fixed chamber 801 is connected to the fixed box 4. A laser chromatograph 9 is fixed to the fixed chamber 801. The piston 802 is slidably connected to the transverse cavity of the fixed chamber 801. A lever 803 is fixed to the right end of the piston 802. The lever 803 is set in the groove of the U-shaped block 804. The U-shaped block 804 is fixed on the fixed rod 7. Two partitions 805 are fixed in the vertical cavity of the fixed chamber 801. The partitions 805 slide A sliding rod 806 is dynamically connected, a first spring 807 is fixed between the sliding rod 806 and the partition 805, a fixing plate 808 is fixed on the sliding rod 806, a sealing head 809 is fixed on the lower end surface of the fixing plate 808, the sealing head 809 cooperates with the opening on the partition 805 to achieve sealing, a negative pressure sensor 810 is fixed in the fixed cavity 801, the fixing rod 7 and the U-shaped block 804 are driven to move by the electric telescopic rod 6, the lever 803 and the piston 802 are forced to move by the U-shaped block 804, the lower side sealing head 809 is separated from the opening on the partition 805 under the action of air pressure, and the sealing mechanism 10 is cooperated to form a sealed state inside the fixed box 4, so that a negative pressure state is formed in the fixed box 4, so that the gas in the transformer oil in the fixed box 4 is quickly precipitated; When the interior of the fixed box 4 is sealed, Figure 1-Figure 6As shown, at this time, the electric telescopic rod 6 continues to extend, thereby continuing to drive the fixed rod 7, the U-shaped block 804 and the cross bar 1001 to move. At this time, the U-shaped block 804 applies a force to the lever 803, so that the lever 803 moves, and synchronously drives the piston 802 to slide outward in the fixed chamber 801, thereby realizing the air extraction effect. At this time, under the action of air pressure, the sealing head 809 and the fixed plate 808 on the lower side partition 805 in the fixed chamber 801 are forced to move, and the sliding guide effect between the sliding rod 806 and the partition 805 is guaranteed to ensure the stability of the movement of the sealing head 809 and the fixed plate 808, so that the lower side sealing head 809 is separated from the lower side partition 805, and the sealing state is released. At this time, the upper side sealing head 809 cooperates with the upper side partition 805 and is in a sealed state. The piston 802 continues to move in the fixed chamber 801, so that the air in the fixed box 4 can be extracted, so that the fixed A negative pressure state is formed in the fixed box 4. With the function of the negative pressure sensor 810, the size of the negative pressure can be detected to ensure that the negative pressure state in the fixed box 4 is between negative 1kp and negative 3kp and is maintained for 10s to 20s, thereby accelerating the precipitation of dissolved gas in the oil in the fixed box 4. The precipitated gas enters the fixed chamber 801, thereby realizing the separation of oil and gas. After the gas separation is completed, the electric telescopic rod 6 is contracted to drive the fixed rod 7, the U-shaped block 804 and the cross bar 1001 to reset. At this time, with the elastic effect of the first spring 807, the lower sealing head 809 cooperates with the lower partition plate 805 to seal, and the piston 802 slides inward in the fixed chamber 801, so that the air pressure in the fixed chamber 801 is increased. Through the action of the air pressure, the upper sealing head 809 is separated from the upper partition plate 805, so that the gas collected in the fixed chamber 801 enters the laser chromatograph 9 for detection and analysis. The stirring mechanism 11 includes a rotating shaft 1101, a stirring rod 1102, a gear 1103 and a convex tooth plate 1104. The bearing of the rotating shaft 1101 is connected to the fixed box 4, and the rotating shaft 1101 is symmetrically distributed front and back about the center line of the rotating shaft 1101, and the stirring rod 1102 is fixed on the rotating shaft 1101; the stirring rod 1102 is evenly spaced on the rotating shaft 1101, and the length of the stirring rod 1102 is less than the distance between the rotating shaft 1101 and the second spring 1006; the rotating shaft 1101 is also fixed with a gear 1103, and the gear 1103 cooperates with the convex tooth plate 1104 to realize transmission, and the convex tooth plate 1104 is symmetrically fixed on the inclined plate 1002 front and back; After the fixed box 4 is sealed, Figure 1-Figure 6As shown, when the electric telescopic rod 6 continues to extend to drive the fixed rod 7 and the cross bar 1001 to move, the inclined plate 1002 and the convex tooth plate 1104 are synchronously driven to move. When the convex tooth plate 1104 is meshed with the gear 1103 for transmission, the rotating shaft 1101 and the stirring rod 1102 are rotated. Through the action of the stirring rod 1102, the oil liquid isolated and sealed in the fixed box 4 can be stirred, thereby further accelerating the precipitation of dissolved gas in the oil liquid and ensuring the detection efficiency. This is the working principle of the online gas monitoring device in transformer oil.

[0020] 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. An online monitoring device for gas in transformer oil, comprising a transformer body (1), a pump (2), an oil inlet pipe (3), a fixing box (4) and an oil return pipe (5), characterized in that: An electric telescopic rod (6) is fixed to the upper end surface of the transformer body (1), a fixed rod (7) is fixed to the output end of the electric telescopic rod (6), a gas separation mechanism (8) is also fixed to the upper end surface of the transformer body (1), a sealing mechanism (10) is installed in the fixed box (4), and the oil inlet and oil outlet of the fixed box (4) are sealed by the sealing mechanism (10), a stirring mechanism (11) is also installed in the fixed box (4), and the gas separation mechanism (8) comprises a fixed cavity (801), a piston (802), a lever (803), a U-shaped block (804), and a plurality of pistons (805). 04), a partition (805), a sliding rod (806), a first spring (807), a fixed plate (808), a sealing head (809) and a negative pressure sensor (810), the fixed chamber (801) is fixed to the fixed box (4), and the fixed chamber (801) is a "T"-shaped structure, and the fixed chamber (801) and the fixed box (4) are connected, a laser chromatograph (9) is fixed to the fixed chamber (801), a piston (802) is slidably connected to the transverse cavity of the fixed chamber (801), and a lever (803) is fixed to the right end of the piston (802), The lever (803) is arranged in a groove of a U-shaped block (804); the U-shaped block (804) is fixed on a fixing rod (7); two partitions (805) are fixed in a vertical cavity of the fixing cavity (801); a sliding rod (806) is slidably connected to the partition (805); a first spring (807) is fixed between the sliding rod (806) and the partition (805); a fixing plate (808) is fixed on the sliding rod (806); a sealing head (809) is fixed on the lower end surface of the fixing plate (808); the sealing head (809) and the partition (805) are connected in a slidable manner. The upper opening cooperates to achieve sealing. A negative pressure sensor (810) is fixed in the fixed cavity (801). The electric telescopic rod (6) drives the fixed rod (7) and the U-shaped block (804) to move. The U-shaped block (804) causes the lever (803) and the piston (802) to move under force. Under the action of gas pressure, the lower sealing head (809) is separated from the upper opening of the partition (805). The sealing mechanism (10) cooperates to form a sealed state inside the fixed box (4), thereby forming a negative pressure state inside the fixed box (4), so that gas in the transformer oil in the fixed box (4) is quickly precipitated.

2. The on-line monitoring device for gas in transformer oil according to claim 1, characterized in that: A pump (2) is fixed to the right end face of the transformer body (1); the pump (2) is connected to a fixed box (4) via an oil inlet pipe (3); the fixed box (4) is fixed to the transformer body (1); and the fixed box (4) is connected to the transformer body (1) via an oil return pipe (5).

3. The on-line monitoring device for gas in transformer oil according to claim 1, characterized in that: The sealing mechanism (10) comprises a cross bar (1001), an inclined plate (1002), a round bar (1003), a vertical bar (1004), a guide bar (1005), a second spring (1006), a connecting rod (1007), a movable plate (1008) and a sealing plug (1009); one end of the cross bar (1001) is fixedly connected to the fixed rod (7), the cross bar (1001) is slidably connected to the fixed box (4), and the other end of the cross bar (1001) is fixed to the inclined plate (1002).

4. The on-line monitoring device for gas in transformer oil according to claim 3 is characterized in that: The inclined panel (1002) and the round rod (1003) are slidably connected, the round rod (1003) is fixed in the fixed box (4), and the round rod (1003) and the vertical rod (1004) are slidably connected.

5. The on-line monitoring device for gas in transformer oil according to claim 3 is characterized in that: The vertical rod (1004) and the guide rod (1005) are slidably connected, and the guide rod (1005) is fixed in the fixed box (4). A second spring (1006) is fixed between the vertical rod (1004) and the fixed box (4).

6. The on-line monitoring device for gas in transformer oil according to claim 3 is characterized in that: The vertical rod (1004) is rotatably connected to one end of the connecting rod (1007), and the other end of the connecting rod (1007) is rotatably connected to the movable plate (1008), and the movable plate (1008) and the guide rod (1005) are slidably connected.

7. The on-line monitoring device for gas in transformer oil according to claim 3 is characterized in that: A sealing plug (1009) is fixed on the movable plate (1008), and the sealing plug (1009) cooperates with a side opening of the fixed box (4) to achieve sealing.

8. The on-line monitoring device for gas in transformer oil according to claim 3 is characterized in that: The stirring mechanism (11) comprises a rotating shaft (1101), a stirring rod (1102), a gear (1103) and a convex tooth plate (1104); the rotating shaft (1101) is connected to a fixed box (4) by a bearing, and the rotating shaft (1101) is symmetrically distributed frontward and rearward about a center line of the rotating shaft (1101); and the stirring rod (1102) is fixed on the rotating shaft (1101).

9. The on-line monitoring device for gas in transformer oil according to claim 8, characterized in that: The stirring rods (1102) are distributed at equal intervals on the rotating shaft (1101), and the length of the stirring rods (1102) is smaller than the distance between the rotating shaft (1101) and the second spring (1006).

10. The on-line monitoring device for gas in transformer oil according to claim 8, characterized in that: A gear (1103) is also fixed on the rotating shaft (1101), and the gear (1103) cooperates with a convex tooth plate (1104) to realize transmission, and the convex tooth plate (1104) is symmetrically fixed on the inclined plate (1002) in the front and rear directions.

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