A Chromatographic Online Monitoring Device for Dissolved Gases in Transformer Oil

Abstract

This invention discloses an online monitoring device for dissolved gases in chromatographic transformer oil, comprising a protective box, a glass syringe, and a rubber stopper installed at the bottom of the glass syringe. An installation port is provided at the top of the protective box near the rear side. The bottom of the glass syringe passes through the installation port and extends into the inner cavity of the protective box. The inner cavity of the protective box has two clamping mechanisms arranged symmetrically, one above the other. A bottom plate is located near the bottom of the inner cavity. This invention, through the cooperation of components such as a fixed motor, a first fixing component, a second fixing component, a sector toothed plate, a vibrating gear, a third fixing component, a rotating plate, a bottom plate, a horizontal plate, a movable plate, a clamping plate, and a moving plate, integrates the traditional mechanical oscillation degassing process in the laboratory into the oil sample transportation process. This achieves a leap in detection efficiency and optimizes labor costs, while avoiding gas escape or oxidation caused by prolonged storage.

Description

Technical Field

[0001] This invention relates to the field of transformer maintenance technology, specifically to a chromatographic online monitoring device for dissolved gases in transformer oil. Background Technology

[0002] A transformer oil chromatograph is a precision analytical instrument specifically designed to monitor dissolved gases in transformer insulating oil. It uses gas chromatography technology to identify and quantify the gas components in the oil, thereby diagnosing potential internal faults in the transformer, such as partial discharge, overheating, and electric arc.

[0003] When a transformer oil chromatograph needs to test the insulating oil of a transformer, it is necessary to first remove the lower layer of oil from the bottom of the transformer and collect it using a glass syringe. Then, the glass syringe containing the collected insulating oil should be placed in a box and taken back to the laboratory for testing.

[0004] However, when staff test the glass syringe filled with insulating oil, a series of degassing operations are required, such as injecting nitrogen and accelerating the release of gas from the oil through mechanical oscillation. The mechanical oscillation method typically takes about 30 minutes, which increases the hidden working time of the staff and reduces the efficiency of the analysis. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A chromatographic online monitoring device for dissolved gases in transformer oil includes a protective box, a glass syringe, and a rubber stopper installed at the bottom of the glass syringe. The protective box has an installation port near its rear side at the top. The bottom of the glass syringe passes through the installation port and extends into the inner cavity of the protective box. The inner cavity of the protective box has two clamping mechanisms arranged symmetrically vertically. Near the bottom of the inner cavity of the protective box is a base plate. Vertical rods are inserted through the top of the base plate near each of the four corners and are fixedly connected to it. A fixing plate is sleeved on the outer side of several vertical rods. A return spring is sleeved on the outer side of several vertical rods. The top end of the return spring is fixedly connected to the base plate, and the bottom end of the return spring is fixedly connected to the fixing plate. The center of the rear side of the fixing plate... A rear plate is fixedly connected to the bottom plate, and the rear side of the rear plate is fixedly connected to the inner wall of the protective box. Rectangular openings are provided on the top of the bottom plate near both left and right sides. Elastic limiting blocks are fixedly connected to the top of the fixed plate near both left and right sides. A lifting plate is located at the bottom of the fixed plate. Limiting blocks are slidably connected to the left and right sides of the lifting plate. A horizontal plate is fixedly connected to the opposite side of each of the two limiting blocks. The opposite side of each of the two horizontal plates is fixedly connected to the inner wall of the protective box. A connecting plate is fixedly connected to the opposite side of each of the two limiting blocks. Limiting springs are fixedly connected to the top of each of the two connecting plates. The tops of each of the two limiting springs are fixedly connected to the lifting plate. A positioning plate is located at the bottom of the lifting plate, and a fixed connection is provided at the center of the rear side of the positioning plate. The enclosure includes a welding plate, the rear side of which is fixedly connected to the inner wall of the protective box. A first trigger is installed on the top of the positioning plate near the left side, a third trigger is installed on the top of the positioning plate near the right side, a second trigger is installed on the top of the fixing plate near the left side, a starter is installed on the top of the protective box near the front side, a locking plate is on the top of the rear plate, a flip plate is hinged to the front of the locking plate, a fourth trigger is on the top of the locking plate, and the rear side of the fourth trigger is fixedly connected to the inner wall of the protective box. A movable spring is fixedly connected between the flip plate and the rear plate. Through holes are opened at the center of the bottom plate, fixing plate, lifting plate, and positioning plate. An operating box is located at the bottom of the positioning plate, and an air outlet pipe is located on the top of the operating box near the left side. An air inlet pipe is located near the right side of the top of the control box. A needle is installed at the top of the air outlet pipe. The top of the air outlet pipe passes through a through hole located on the positioning plate, and the needle passes through a through hole located on the lifting plate. A nitrogen extractor is located on the right side of the control box. A gas delivery pipe is inserted into the top of the air inlet pipe, and the other end of the gas delivery pipe is inserted into the nitrogen extractor. A cavity is formed inside the control box. The cavity inside the air outlet pipe is interconnected with the cavity. A vertical groove is formed near the right side of the inner cavity of the control box. A horizontal groove is formed near the bottom of the left side of the vertical groove. The horizontal groove is interconnected with the cavity. A movable ball is attached to the inner cavity of the vertical groove near the bottom. A lower spring is fixedly connected to the bottom of the movable ball. The bottom end of the lower spring is fixedly connected to the bottom of the vertical groove.

[0007] Preferably, the cavity is provided with a slide rod, the inner cavity of the slide rod has a blind hole, a sealing ball is attached to the inner cavity of the blind hole near the center, a connecting spring is fixedly connected to the left side of the sealing ball, the left end of the connecting spring is fixedly connected to the left side of the inner cavity of the blind hole, vent holes are provided on both the upper and lower sides of the slide rod, both of the vent holes are interconnected with the inner cavity of the blind hole, the diameter of the outer side of the slide rod near the right end is larger than that of the left end, and the outer side of the slide rod near the right end is attached to the cavity, the left end of the slide rod penetrates the inner cavity of the control box.

[0008] Preferably, a linkage block is fixedly connected to the left end of the slide rod, a hinge plate is hinged to the left side of the linkage block, a limit plate is fixedly connected to the left side of the operation box near the bottom, a swing block is hinged together to the left side of the hinge plate and the limit plate, a pull rope is provided on the swing block, a bottom cylinder is fixedly connected to the left end of the pull rope, and the bottom of the bottom cylinder is fixedly connected to the bottom of the inner cavity of the protective box.

[0009] Preferably, the clamping mechanism includes a movable plate, the top of which has beveled openings near the left and right sides, and the inner cavities of the two beveled openings are slidably connected to movable plates. The corresponding sides of the two movable plates are hinged to clamping plates, and the corresponding sides of the two clamping plates are in contact with the outer side of the glass syringe. The front side of the movable plate has a second fixing member, the inner cavity of which is provided with an output cylinder. The power output shaft of the output cylinder is fixedly connected to the center of the front side of the movable plate, and the second fixing member located above is fixedly connected to the inner wall of the protective box.

[0010] Preferably, the bottom of the second fixing member located below is fixedly connected to a fixing frame, the inner cavity of the fixing frame has a placement opening, the inner cavity of the placement opening is installed with a third fixing member, the top of the fixing frame is installed with a first fixing member, the rear side of the first fixing member is inserted with a first rotating shaft, the outer side of the first rotating shaft is fixedly sleeved with a swing frame near the center, the rear end of the first rotating shaft is fixedly connected with a fan-shaped toothed plate, the front side of the third fixing member is fixedly connected with a fixing motor, the power output shaft of the fixing motor passes through the third fixing member and is fixedly connected with a rotating plate, the swing frame has an annular opening, the rear side of the rotating plate is fixedly connected with a movable slide rod near the bottom, the movable slide rod fits into the annular opening, and the rotating plate and the swing frame are located between the second fixing member and the third fixing member.

[0011] Preferably, the inner cavity of the second fixing member is provided with a second rotating shaft, and a vibration gear is fixedly connected to the rear end of the second rotating shaft. The vibration gear and the sector tooth plate are meshed with each other, and the front end of the second rotating shaft is fixedly connected to the moving plate located below.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. This invention, through the cooperation of components such as the reset spring, base plate, fixed plate, lifting plate, positioning plate, vertical rod, limiting block, horizontal plate, limiting spring, first trigger, and second trigger, can automate the nitrogen injection process, facilitate gas replacement during degassing, prevent oxygen from mixing in, maintain the purity of the oil sample, reduce the number of steps for operators, and improve analysis efficiency.

[0014] 2. This invention integrates the mechanical oscillation degassing process in the traditional laboratory into the oil sample transportation process through the cooperation of components such as a fixed motor, a first fixed component, a second fixed component, a sector toothed plate, a vibrating gear, a third fixed component, a rotating plate, a base plate, a horizontal plate, a movable plate, a clamping plate, and a moving plate. This achieves a leap in detection efficiency and optimization of labor costs, while avoiding gas escape or oxidation caused by long-term storage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention;

[0016] Figure 2 This is a plan view of the glass syringe structure of the component of this invention;

[0017] Figure 3 This is a schematic diagram of the component clamping mechanism of the present invention;

[0018] Figure 4 This is a bottom view of the component clamping mechanism structure of the present invention;

[0019] Figure 5 This is a rear view of the component clamping mechanism structure of the present invention;

[0020] Figure 6 This is a schematic diagram of the base plate structure of the component of the present invention;

[0021] Figure 7 This is a plan view of the base plate structure of the component of the present invention;

[0022] Figure 8 This is a schematic diagram of the swing frame structure of the component of the present invention;

[0023] Figure 9 This is a plan view of the component operation box structure of the present invention;

[0024] Figure 10 This is a bottom view of the base plate structure of the component of the present invention;

[0025] Figure 11 This is a plan view of the lifting plate structure of the component of the present invention;

[0026] Figure 12 This is a left-side plan view of the base plate structure of the component of the present invention;

[0027] Figure 13This is a schematic diagram of the internal structure of the component operation box of the present invention;

[0028] Figure 14 This is a schematic diagram of the movable plate structure of the component of the present invention.

[0029] Labels in the diagram: 1. Protective box; 2. Starter; 3. Glass syringe; 4. Rubber stopper; 5. Fixed motor; 6. Fixed frame; 7. Moving plate; 8. Movable plate; 9. Clamping plate; 10. First fixing component; 11. Second fixing component; 12. Swinging frame; 13. Sector toothed plate; 14. Vibrating gear; 15. Third fixing component; 16. Rotating plate; 17. Base plate; 18. Horizontal plate; 19. Return spring; 20. Vertical rod; 21. Fixed plate; 22. Lifting plate; 23. Positioning plate; 24. Nitrogen extractor; 25. Elastic limit block; 26. Limit block; 27. Bottom cylinder; 8. Pull rope; 29. ​​First trigger; 30. Second trigger; 31. Air outlet pipe; 32. Needle; 33. Limiting spring; 34. Connecting plate; 35. Air supply pipe; 36. Control box; 37. Swing block; 38. Hinge plate; 39. Limiting plate; 40. Linkage block; 41. Slide rod; 42. Connecting spring; 43. Sealing ball; 44. Third trigger; 45. Movable slide rod; 46. Movable ball; 47. Lower spring; 48. Air inlet pipe; 49. Rear plate; 50. Movable spring; 51. Clamping plate; 52. Flipping plate; 53. Fourth trigger; 54. Welding plate. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figure 1-14 The present invention provides a technical solution:

[0032] A chromatographic online monitoring device for dissolved gases in transformer oil includes a protective box 1, a glass injector 3, and a rubber stopper 4 installed at the bottom of the glass injector 3. An installation port is provided at the top of the protective box 1 near the rear side. The bottom of the glass injector 3 passes through the installation port and extends into the inner cavity of the protective box 1. The inner cavity of the protective box 1 has two clamping mechanisms arranged symmetrically vertically. Near the bottom of the inner cavity of the protective box 1 is a base plate 17. Vertical rods 20 are threaded through the top of the base plate 17 near its four corners and fixedly connected to it. A fixing plate 21 is sleeved on the outer side of several vertical rods 20. A return spring 19 is sleeved on the outer side of several vertical rods 20. The top of the return spring 19... Fixedly connected to the base plate 17, the bottom end of the return spring 19 is fixedly connected to the fixed plate 21, and a rear plate 49 is fixedly connected to the center of the rear side of the fixed plate 21. The rear side of the rear plate 49 is fixedly connected to the inner wall of the protective box 1. Rectangular openings are provided on the top of the base plate 17 near the left and right sides. Elastic limit blocks 25 are fixedly connected to the top of the fixed plate 21 near the left and right sides. A lifting plate 22 is provided at the bottom of the fixed plate 21. Limit blocks 26 are slidably connected to the left and right sides of the lifting plate 22. A horizontal plate 18 is fixedly connected to the side of the two limit blocks 26 that is opposite to each other. The side of the two horizontal plates 18 that is opposite to each other is fixedly connected to the inner wall of the protective box 1. The two limit blocks 26 are equivalent to one Each side is fixedly connected to a connecting plate 34. A limit spring 33 is fixedly connected to the top of each connecting plate 34. The top of each limit spring 33 is fixedly connected to a lifting plate 22. A positioning plate 23 is located at the bottom of the lifting plate 22. A welding plate 54 is fixedly connected to the center of the rear side of the positioning plate 23. The rear side of the welding plate 54 is fixedly connected to the inner wall of the protective box 1. A first trigger 29 is installed near the left side of the top of the positioning plate 23, and a third trigger 44 is installed near the right side of the top of the positioning plate 23. A second trigger 30 is installed near the left side of the top of the fixing plate 21. A starter 2 is installed near the front of the top of the protective box 1. A locking plate 51 is located on the top of the rear plate 49. A flip plate 52 is hinged to the front side, and a fourth trigger 53 is located on the top of the card plate 51. The fourth trigger 53 is fixedly connected to the inner wall of the protective box 1 on the rear side. A movable spring 50 is fixedly connected between the flip plate 52 and the rear plate 49. Through holes are opened at the center of the bottom plate 17, the fixed plate 21, the lifting plate 22 and the positioning plate 23. An operation box 36 is located at the bottom of the positioning plate 23. An air outlet pipe 31 is located on the top of the operation box 36 near the left side, and an air inlet pipe 48 is located on the top of the operation box 36 near the right side. A needle 32 is installed at the top of the air outlet pipe 31. The top of the air outlet pipe 31 passes through the through hole located on the positioning plate 23, and the needle 32 passes through the through hole located on the lifting plate 22.

[0033] On the right side of the control box 36 is a nitrogen extractor 24. A gas delivery pipe 35 is inserted into the top of the inlet pipe 48, and the other end of the gas delivery pipe 35 is inserted into the nitrogen extractor 24. The inner cavity of the control box 36 has a cavity, and the inner cavity of the outlet pipe 31 is interconnected with the cavity. A vertical groove is formed near the right side of the inner cavity of the control box 36, and a horizontal groove is formed near the bottom on the left side of the vertical groove. The horizontal groove is interconnected with the cavity. A movable ball 46 is attached to the inner cavity of the vertical groove near the bottom. A lower spring 47 is fixedly connected to the bottom of the movable ball 46, and the bottom end of the lower spring 47 is fixedly connected to the bottom of the vertical groove. A sliding rod 41 is provided in the cavity. A blind hole is formed in the inner cavity of the sliding rod 41, and a sealing ball 43 is attached to the inner cavity of the blind hole near the center. A connecting spring 42 is fixedly connected to the left side of the sealing ball 43. The left end of 42 is fixedly connected to the left side of the blind hole cavity. Ventilation holes are provided on both the upper and lower sides of the slide rod 41. Both ventilation holes are interconnected with the inner cavity of the blind hole. The diameter of the outer side of the slide rod 41 near the right end is larger than that of the left end, and the outer side of the slide rod 41 near the right end fits into the cavity. The left end of the slide rod 41 penetrates the inner cavity of the operating box 36. A linkage block 40 is fixedly connected to the left end of the slide rod 41. A hinge plate 38 is hinged to the left side of the linkage block 40. A limit plate 39 is fixedly connected to the left side of the operating box 36 near the bottom. A swing block 37 is hinged together by the hinge plate 38 and the limit plate 39 near the left side. A pull rope 28 is provided on the swing block 37. A bottom cylinder 27 is fixedly connected to the left end of the pull rope 28. The bottom of the bottom cylinder 27 is fixedly connected to the bottom of the inner cavity of the protective box 1.

[0034] The clamping mechanism includes a movable plate 7. The top of the movable plate 7 has beveled openings near the left and right sides. Movable plates 8 are slidably connected to the inner cavities of both beveled openings. Clamping plates 9 are hinged to corresponding sides of the two movable plates 8. The corresponding sides of the clamping plates 9 are in contact with the outer side of the glass syringe 3. A second fixing member 11 is located on the front side of the movable plate 7. An output cylinder is installed inside the cavity of the second fixing member 11. The output cylinder's power output shaft is fixedly connected to the center of the front side of the movable plate 7. The upper second fixing member 11 is fixedly connected to the inner wall of the protective box 1. A fixing frame 6 is fixedly connected to the bottom of the lower second fixing member 11. A placement opening is opened inside the cavity of the fixing frame 6. A third fixing member 15 is installed inside the placement opening. A first fixing member 10 is installed on the top of the fixing frame 6. The rear side of the first fixing member 10 is inserted... A first rotating shaft is connected to the first rotating shaft. A swing frame 12 is fixedly sleeved on the outer side of the first rotating shaft near the center. A fan-shaped toothed plate 13 is fixedly connected to the rear end of the first rotating shaft. A fixed motor 5 is fixedly connected to the front side of the third fixing member 15. The power output shaft of the fixed motor 5 passes through the third fixing member 15 and is fixedly connected to a rotating plate 16. An annular opening is opened on the swing frame 12. A movable slide rod 45 is fixedly connected to the rear side of the rotating plate 16 near the bottom. The movable slide rod 45 fits into the annular opening. The rotating plate 16 and the swing frame 12 are located between the second fixing member 11 and the third fixing member 15. A second rotating shaft is provided through the inner cavity of the second fixing member 11. A vibration gear 14 is fixedly connected to the rear end of the second rotating shaft. The vibration gear 14 and the fan-shaped toothed plate 13 are meshed with each other. The front end of the second rotating shaft is fixedly connected to the movable plate 7 located below.

[0035] The output of the second trigger 30 is electrically connected to the input of the upper output cylinder. The output of the first trigger 29 is electrically connected to the input of the bottom cylinder 27. The output of the third trigger 44 is electrically connected to the input of the upper output cylinder, and the third trigger 44 is a delay trigger. The output of the fourth trigger 53 is electrically connected to the input of the fixed motor 5, and the fixed motor 5 has a timer inside. The output of the starter 2 is electrically connected to the input of the lower output cylinder.

[0036] Working principle: First, the operator places the glass syringe 3 below the transformer sampling valve to take oil. When the oil is taken, the small air bubbles inside the glass syringe 3 can be manually removed and inserted into the installation port on the top of the protective box 1. When the glass syringe 3 enters the inner cavity of the protective box 1, it can contact the top of the base plate 17 and drive the base plate 17 to move downward. When the base plate 17 moves downward, it can drive several vertical rods 20 to move downward simultaneously. When the base plate 17 moves downward, it can contact the second trigger 30. When the second trigger 30 is activated, it can activate the output cylinder located above. When the output cylinder located above is activated, it can push the moving plate 7 located above to move backward. Since the moving plate 7 has a slanted opening, the glass syringe 3 can be initially fixed by the two clamping plates 9 driven by the two movable plates 8.

[0037] When several vertical rods 20 move downwards, they can drive the lifting plate 22 to move downwards. When the lifting plate 22 moves downwards, it can contact the first trigger 29. When the first trigger 29 is activated, it can trigger the bottom cylinder 27. The bottom cylinder 27 can pull the pull rope 28 through the power output shaft, thereby driving the swing block 37 to swing. When the swing block 37 swings, it can drive the slide rod 41 to move to the left through the hinge plate 38, causing the movable ball 46 to move downwards and expose the gap. At the same time, when the slide rod 41 moves to the left, it can draw nitrogen from the nitrogen extractor 24 into the inner cavity of the vertical groove through the gas supply pipe 35. When the nitrogen enters the inner cavity of the vertical groove, it can enter the blind hole through the horizontal groove and enter the inner cavity of the gas outlet pipe 31 through the two vent holes, thereby realizing the injection of nitrogen into the interior of the glass syringe 3, eliminating oxygen and reducing external interference, and ensuring the accuracy of oil sample analysis.

[0038] When the lifting plate 22 moves downward, the third trigger 44 is activated simultaneously. The third trigger 44 can reactivate the output cylinder located above and cause the two adjacent clamping plates 9 to move back to back, disengaging from contact with the outer surface of the glass syringe 3. When the glass syringe 3 loses external force, the lifting plate 22 can be reset by the limiting spring 33. When the lifting plate 22 is reset, it can push several vertical rods 20 upward. The vertical rods 20 can drive the base plate 17 upward. The base plate 17 can drive the flipping plate 52 to flip. When the flipping plate 52 flips upward, it can activate the fourth trigger 53. When the fourth trigger 53 is activated, it can start the fixed motor 5. The fixed motor 5 can drive the rotating plate 16 to rotate via the power output shaft. When the rotating plate 16 rotates, it can drive the swing frame 12 to swing via the movable slide rod 45. When the swing frame 12 swings, it can drive the fan-shaped toothed plate 13 to swing back and forth, thereby driving the vibrating gear 14 to rotate back and forth. When the vibrating gear 14 rotates, it can drive the glass syringe 3 to swing back and forth, thereby accelerating the release of gas in the oil through high-frequency oscillation. The fixed motor 5 can be turned off by the timer inside the fixed motor 5. When the operator needs to remove the glass syringe 3, the starter 2 can be turned on to reset the output cylinder located below and release the glass syringe 3.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A chromatographic online monitoring device for dissolved gases in transformer oil, comprising a protective box (1), a glass syringe (3), and a rubber stopper (4) installed at the bottom of the glass syringe (3), characterized in that: The protective box (1) has an installation port at the top near the rear side. The bottom of the glass syringe (3) passes through the installation port and extends into the inner cavity of the protective box (1). The inner cavity of the protective box (1) has two clamping mechanisms, which are arranged symmetrically at the top and bottom. The inner cavity of the protective box (1) has a bottom plate (17) near the bottom. The top of the bottom plate (17) is provided with vertical rods (20) near the four corners and is fixedly connected to them. A fixing plate (21) is sleeved on the outer side of several vertical rods (20). A return spring (19) is sleeved on the outer side of several vertical rods (20). The top of the return spring (19) is fixedly connected to the bottom plate (17), and the bottom of the return spring (19) is fixedly connected to the fixing plate (21). A rear plate (49) is fixedly connected to the center of the rear side of the fixed plate (21). The rear plate (49) is fixedly connected to the inner wall of the protective box (1). A rectangular opening is provided on the top of the bottom plate (17) near the left and right sides. An elastic limiting block (25) is fixedly connected to the top of the fixed plate (21) near the left and right sides. A lifting plate (22) is provided at the bottom of the fixed plate (21). A limiting block (26) is slidably connected to the left and right sides of the lifting plate (22). A horizontal plate (18) is fixedly connected to the opposite side of the two limiting blocks (26). The opposite side of the two horizontal plates (18) is fixedly connected to the inner wall of the protective box (1). The corresponding side of the two limiting blocks (26) is fixedly connected to... There are connecting plates (34), and the tops of the two connecting plates (34) are fixedly connected to limit springs (33). The tops of the two limit springs (33) are fixedly connected to the lifting plate (22). The bottom of the lifting plate (22) has a positioning plate (23). A welding plate (54) is fixedly connected to the center of the rear side of the positioning plate (23). The rear side of the welding plate (54) is fixedly connected to the inner wall of the protective box (1). A first trigger (29) is installed on the top of the positioning plate (23) near the left side. A third trigger (44) is installed on the top of the positioning plate (23) near the right side. A second trigger (30) is installed on the top of the fixing plate (21) near the left side. A starter is installed on the top of the protective box (1) near the front side. The device (2) has a retaining plate (51) on the top of the rear plate (49), a flip plate (52) is hinged to the front of the retaining plate (51), a fourth trigger (53) is on the top of the retaining plate (51), the rear side of the fourth trigger (53) is fixedly connected to the inner wall of the protective box (1), a movable spring (50) is fixedly connected between the flip plate (52) and the rear plate (49), and a through hole is opened at the center of the bottom plate (17), the fixing plate (21), the lifting plate (22) and the positioning plate (23), and an operation box (36) is at the bottom of the positioning plate (23). An air outlet pipe (31) is provided on the top of the operation box (36) near the left side, and an air inlet pipe (48) is provided on the top of the operation box (36) near the right side.A needle (32) is installed at the top of the outlet pipe (31). The top of the outlet pipe (31) passes through a through hole on the positioning plate (23). The needle (32) passes through a through hole on the lifting plate (22). A nitrogen extractor (24) is located on the right side of the operation box (36). A gas delivery pipe (35) is inserted into the top of the inlet pipe (48). The other end of the gas delivery pipe (35) is inserted into the nitrogen extractor (24). A cavity is opened in the inner cavity of the operation box (36). The inner cavity of the outlet pipe (31) and the cavity are interconnected. A vertical groove is opened near the right side of the inner cavity of the operation box (36). A horizontal groove is opened near the bottom on the left side of the vertical groove. The horizontal groove and the cavity are interconnected. A movable ball (46) is attached to the inner cavity of the vertical groove near the bottom. A lower spring (47) is fixedly connected to the bottom of the movable ball (46). The bottom end of the lower spring (47) is fixedly connected to the bottom of the vertical groove.

2. The online monitoring device for dissolved gases in chromatographic transformer oil according to claim 1, characterized in that: The cavity is provided with a slide rod (41), and a blind hole is opened in the inner cavity of the slide rod (41). A sealing ball (43) is attached to the inner cavity of the blind hole near the center. A connecting spring (42) is fixedly connected to the left side of the sealing ball (43). The left end of the connecting spring (42) is fixedly connected to the left side of the inner cavity of the blind hole. Ventilation holes are opened on both the upper and lower sides of the slide rod (41). Both ventilation holes are interconnected with the inner cavity of the blind hole. The diameter of the outer side of the slide rod (41) near the right end is larger than that of the left end. The outer side of the slide rod (41) near the right end is attached to the cavity. The left end of the slide rod (41) penetrates the inner cavity of the operating box (36).

3. The online monitoring device for dissolved gases in chromatographic transformer oil according to claim 2, characterized in that: The left end of the slide bar (41) is fixedly connected to a linkage block (40), and the left side of the linkage block (40) is hinged to a hinge plate (38). The left side of the operation box (36) is fixedly connected to a limit plate (39) near the bottom. The hinge plate (38) and the limit plate (39) are hinged together to a swing block (37) near the left side. A pull rope (28) is provided on the swing block (37). The left end of the pull rope (28) is fixedly connected to a bottom cylinder (27). The bottom of the bottom cylinder (27) is fixedly connected to the bottom of the inner cavity of the protective box (1).

4. The online monitoring device for dissolved gases in chromatographic transformer oil according to claim 1, characterized in that: The clamping mechanism includes a movable plate (7), which has slanted openings at the top near the left and right sides. The inner cavities of the two slanted openings are slidably connected to movable plates (8). The corresponding sides of the two movable plates (8) are hinged to clamps (9). The corresponding sides of the two clamps (9) are in contact with the outer side of the glass syringe (3). The front side of the movable plate (7) has a second fixing member (11). The inner cavity of the second fixing member (11) is provided with an output cylinder. The power output shaft of the output cylinder is fixedly connected to the center of the front side of the movable plate (7). The second fixing member (11) located above is fixedly connected to the inner wall of the protective box (1).

5. The online monitoring device for dissolved gases in chromatographic transformer oil according to claim 4, characterized in that: The bottom of the second fixing member (11) located below is fixedly connected to a fixing frame (6). The inner cavity of the fixing frame (6) is provided with a placement opening. The inner cavity of the placement opening is equipped with a third fixing member (15). The top of the fixing frame (6) is equipped with a first fixing member (10). The rear side of the first fixing member (10) is inserted with a first rotating shaft. The outer side of the first rotating shaft is fixedly sleeved with a swing frame (12) near the center. The rear end of the first rotating shaft is fixedly connected with a fan-shaped toothed plate (13). The front side of the third fixing member (15) is fixedly connected with a fixed motor (5). The power output shaft of the fixed motor (5) passes through the third fixing member (15) and is fixedly connected with a rotating plate (16). The swing frame (12) has an annular opening. The rear side of the rotating plate (16) is fixedly connected with a movable slide rod (45) near the bottom. The movable slide rod (45) fits into the annular opening. The rotating plate (16) and the swing frame (12) are located between the second fixing member (11) and the third fixing member (15).

6. The online monitoring device for dissolved gases in chromatographic transformer oil according to claim 5, characterized in that: The second fixing member (11) has a second rotating shaft through its inner cavity. The rear end of the second rotating shaft is fixedly connected to a vibration gear (14). The vibration gear (14) and the fan-shaped toothed plate (13) are meshed with each other. The front end of the second rotating shaft is fixedly connected to the moving plate (7) located below.

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