Portable transformer oil sample collecting device

Abstract

The invention discloses a portable transformer oil sample collection device which comprises a mounting cover, a sealing plate, an unlocking mechanism and a conveying mechanism, the unlocking mechanism is arranged in the mounting cover and comprises an unlocking part and a pushing part, the pushing part is connected with the end, away from the oil valve, of the mounting cover in a sliding and penetrating mode, and the unlocking part is fixedly connected with the end, close to the oil valve, of the pushing part. Through the design of the mounting cover and the unlocking mechanism, when a transformer oil sample is collected, the mounting cover is in threaded sleeving connection with the outer wall of an oil valve, a twisting block is pushed, a pushing rod is driven to move through the movement of the twisting block, a sealing rod is driven to move through the movement of the pushing rod, an unlocking rod is driven to move through the movement of the sealing rod, and an unlocking block is driven to move through the movement of the unlocking rod; the unlocking block and the sealing bolt are connected in a penetrating mode, the sealing effect of the sealing bolt on the oil valve is relieved through the unlocking block, an oil sample splashed by the oil valve is blocked and collected through the installation cover, and operators are prevented from being scalded or the site environment is prevented from being polluted.

Description

Technical Field

[0001] This invention relates to the field of transformer inspection technology, and in particular to a portable transformer oil sample collection device. Background Technology

[0002] Transformer oil sampling is an important task in transformer operation and maintenance. Its main purpose is to evaluate the transformer's operating status and insulation performance by analyzing the chemical composition and physical properties of the transformer oil. Sampling is usually carried out at the transformer's oil valve or oil sampling port, and oil samples are selected under operating conditions to ensure that the samples can represent the actual internal conditions of the transformer.

[0003] Existing methods for collecting transformer oil samples require removing the outer protective shell of the oil valve, loosening the sealing bolts inside the valve using tools, and collecting the oil sample flowing out of the valve through a sampling bottle for subsequent testing. During the loosening of the sealing bolts, the oil sample inside the valve is prone to splashing due to the internal pressure, which can lead to burns to operators or contamination of the work environment. This solution proposes a portable transformer oil sampling device to address these issues. Summary of the Invention

[0004] The purpose of this invention is to provide a portable transformer oil sample collection device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a portable transformer oil sampling device, used for opening the internal sealing bolts of an oil valve, comprising:

[0006] Mounting cover, one end of which is threadedly connected to the outer wall of the oil valve;

[0007] A sealing plate is disposed inside a mounting cover, and the outer wall of the sealing plate is interlocked with the inner wall of the mounting cover.

[0008] An unlocking mechanism is provided inside the mounting cover. The unlocking mechanism includes an unlocking part and a pushing part. The pushing part is slidably inserted into the end of the mounting cover away from the oil valve, and the unlocking part is fixedly connected to the end of the pushing part near the oil valve.

[0009] A conveying mechanism is provided at the bottom of the mounting cover. The conveying mechanism includes a conveying section and an adjusting section. The conveying section is inserted and connected to the bottom of the mounting cover, and the adjusting section is fixedly connected to the end of the conveying section away from the mounting cover.

[0010] Preferably, the actuation unit includes:

[0011] A push rod is disposed inside a mounting cover, and one end of the push rod is slidably inserted into the inner wall of the mounting cover at the end away from the oil valve.

[0012] A torsion block is fixedly installed at the end of the push rod away from the oil valve.

[0013] A sealing rod is disposed inside the mounting cover. One end of the sealing rod is fixedly connected to the end of the push rod away from the torsion block, and the end of the sealing rod away from the push rod is fixedly connected to the unlocking part.

[0014] Preferably, the unlocking part includes:

[0015] An unlocking rod is provided inside the mounting cover, and one end of the unlocking part is fixedly connected to the end of the sealing rod away from the push rod;

[0016] An unlocking block is fixedly installed at the end of the unlocking rod away from the sealing rod, and the unlocking block is adapted to the sealing bolt.

[0017] Preferably, the outer wall of the unlocking rod near the sealing rod is fitted with an installation plate, and the outer wall of the installation plate is provided with a scraping component, which is in close contact with the inner wall of the installation cover.

[0018] Preferably, the scraping component includes:

[0019] A scraper ring is disposed inside a mounting cover, and the outer wall of the scraper ring is fitted and connected to the inner wall of the mounting cover.

[0020] Connecting rods, one end of the plurality of connecting rods is fixedly connected to the outer wall of the mounting plate, and the end of the plurality of connecting rods away from the mounting plate is fixedly connected to the inner wall of the scraper ring.

[0021] Preferably, a sealing ring is fixedly installed at one end of the sealing plate near the oil valve, and the end of the sealing ring away from the sealing plate is slidably connected to the end of the mounting plate away from the unlocking rod. A sealing sleeve is fixedly installed on the inner wall of the sealing plate, and the inner wall of the sealing sleeve is slidably sleeved with the outer wall of the sealing rod.

[0022] Preferably, the conveying unit includes:

[0023] A connecting pipe is provided at the bottom of the mounting cover, one end of the connecting pipe is inserted and connected to the bottom of the mounting cover, and the end of the connecting pipe away from the mounting cover is fixedly connected to the adjustment part;

[0024] The conveying pipes, one end of each of the multiple conveying pipes, are respectively inserted and connected to the end of the connecting pipe away from the mounting cover.

[0025] Preferably, the adjustment section includes:

[0026] A sealing cap, one end of which is fixedly connected to the end of the connecting tube away from the mounting cover;

[0027] A rotating rod is disposed inside a connecting pipe, and one end of the rotating rod is rotatably inserted and connected to the end of the sealing cap near the connecting pipe.

[0028] A flow guide ball is disposed inside a connecting pipe. One end of the flow guide ball is fixedly connected to the end of the rotating rod away from the sealing cover, and the outer wall of the flow guide ball is rotatably connected to the inner wall of the connecting pipe.

[0029] A push rod, one end of which is sleeved on the outer wall of the end of the rotating rod away from the guide ball.

[0030] Preferably, a limiting plate is sleeved on the outer wall of the end of the push rod near the sealing rod, and a push plate is attached to the end of the limiting plate near the sealing rod. The inner wall of the push plate is slidably sleeved with the outer wall of the push rod. A spring is sleeved on the outer wall of the sealing rod. One end of the spring is fixedly connected to the end of the sealing plate away from the oil valve, and the other end of the spring is fixedly connected to the end of the push plate away from the limiting plate.

[0031] Preferably, an observation groove is provided at the end of the mounting cover and the sealing plate away from the oil valve, and an observation window is interspersed in the observation groove.

[0032] The technical effects and advantages of this invention are as follows:

[0033] This invention, through the design of the mounting cover and unlocking mechanism, allows for the following process during transformer oil sample collection: the mounting cover is threadedly connected to the outer wall of the oil valve. Pushing the torsion block moves the push rod, which in turn moves the sealing rod, which in turn moves the unlocking rod, which in turn moves the unlocking block. This allows the unlocking block to interlock with the sealing bolt. Rotating the torsion block causes the unlocking block to rotate, which in turn causes the sealing bolt to rotate, thus releasing the sealing effect of the sealing bolt on the oil valve. The mounting cover also blocks and collects oil samples splashed from the oil valve, preventing burns to operators or contamination of the work area. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention.

[0035] Figure 2 This is a cross-sectional structural diagram of the unlocking mechanism of the present invention.

[0036] Figure 3 For the present invention Figure 2 Enlarged view of the structure at point A in the middle.

[0037] Figure 4 This is a cross-sectional view of the overall structure of the present invention.

[0038] Figure 5 This is a cross-sectional view of the scraper component of the present invention.

[0039] Figure 6 This is a three-dimensional structural diagram of the unlocking mechanism of the present invention.

[0040] Figure 7 This is a three-dimensional structural diagram of the adjustment part of the present invention.

[0041] Figure 8 This is a cross-sectional view of the mounting cover of the present invention.

[0042] In the diagram: 1. Mounting cover; 2. Oil valve; 3. Sealing bolt; 4. Observation window; 5. Connecting pipe; 6. Delivery pipe; 7. Sealing cover; 8. Rotating rod; 9. Push rod; 10. Torsion block; 11. Push rod; 12. Limiting plate; 13. Sealing rod; 14. Unlocking rod; 15. Unlocking block; 16. Push plate; 17. Spring; 18. Sealing plate; 19. Sealing ring; 20. Mounting plate; 21. Connecting rod; 22. Scraper ring; 23. Sealing sleeve; 24. Guide ball. Detailed Implementation

[0043] 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.

[0044] This invention provides, for example Figure 1-8 Shown:

[0045] A portable transformer oil sampling device, used for opening the internal sealing bolt 3 of oil valve 2, includes:

[0046] Mounting cover 1, one end of mounting cover 1 is threadedly connected to the outer wall of oil valve 2;

[0047] A sealing plate 18 is disposed inside the mounting cover 1, and the outer wall of the sealing plate 18 is interlocked with the inner wall of the mounting cover 1.

[0048] Both the mounting cover 1 and the sealing plate 18 are provided with observation grooves at the ends away from the oil valve 2, and observation windows 4 are interspersed in the observation grooves.

[0049] The unlocking mechanism is located inside the mounting cover 1. The unlocking mechanism includes an unlocking part and a pushing part. The pushing part is slidably inserted into the end of the mounting cover 1 away from the oil valve 2, and the unlocking part is fixedly connected to the end of the pushing part near the oil valve 2.

[0050] Specifically, the promotion department includes:

[0051] Push rod 11 is disposed inside mounting cover 1, and one end of push rod 11 is slidably inserted into the inner wall of the end of mounting cover 1 away from oil valve 2;

[0052] Torque block 10 is fixedly installed at the end of push rod 11 away from oil valve 2;

[0053] A sealing rod 13 is disposed inside the mounting cover 1. One end of the sealing rod 13 is fixedly connected to the end of the push rod 11 away from the toggle block 10, and the end of the sealing rod 13 away from the push rod 11 is fixedly connected to the unlocking part.

[0054] Specifically, the unlocking mechanism includes:

[0055] Unlocking rod 14 is disposed inside mounting cover 1, and one end of the unlocking part is fixedly connected to the end of sealing rod 13 away from push rod 11;

[0056] Unlocking block 15 is fixedly installed on the end of unlocking rod 14 away from sealing rod 13, and unlocking block 15 is compatible with sealing bolt 3;

[0057] It should be noted that the sealing bolt 3 is threadedly connected to the oil valve 2, sealing the oil valve 2. One end of the mounting cover 1 is threadedly fitted onto the outer wall of the oil valve 2. The sealing plate 18 is located inside the mounting cover 1, with its outer wall threadedly connected to the inner wall of the mounting cover 1. Multiple observation windows 4 are threadedly connected to multiple observation slots. Each observation window 4 is equipped with a 5x magnifying glass, allowing for visual inspection of the oil color and turbidity inside the mounting cover 1. The push rod 11 is located inside the mounting cover 1, with one end extending out of the mounting cover 1 away from the oil valve 2 and fixedly connected to the torsion block 10. The end of the push rod 11 away from the torsion block 10 is fixedly connected to the sealing rod 13. The end of the sealing rod 13 away from the push rod 11 extends out of the sealing plate 18 and is fixedly connected to the unlocking rod 14. The end of the unlocking rod 14 away from the sealing rod 13 is fixedly connected to the unlocking block 15, which is compatible with the sealing bolt 3. During transformer oil sample collection, the... The mounting cover 1 is threaded onto the outer wall of the oil valve 2. Observation is made through the observation window 4. Align the release block with the sealing bolt 3, push the torsion block 10. The movement of the torsion block 10 drives the push rod 11 to move. The movement of the push rod 11 drives the sealing rod 13 to move. The movement of the sealing rod 13 drives the unlocking rod 14 to move. The movement of the unlocking rod 14 drives the unlocking block 15 to move, so that the unlocking block 15 is interlocked with the sealing bolt 3. Rotate the torsion block 10. The rotation of the torsion block 10 drives the push rod 11 to rotate. The rotation of the push rod 11 drives the sealing rod 13 to rotate. The rotation of the sealing rod 13 drives the unlocking rod 14 to rotate. The rotation of the unlocking rod 14 drives the unlocking block 15 to rotate. The unlocking block 15 drives the sealing bolt 3 to rotate, thereby releasing the sealing effect of the sealing bolt 3 on the oil valve 2. The mounting cover 1 also blocks and collects the oil sample splashed from the oil valve 2, preventing the oil sample from splashing and causing burns to the operator or contaminating the site environment.

[0058] The outer wall of the unlocking rod 14 near the sealing rod 13 is fitted with the mounting plate 20. The outer wall of the mounting plate 20 is provided with a scraping component, which is in close contact with the inner wall of the mounting cover 1.

[0059] Specifically, the scraper components include:

[0060] Scraper ring 22 is disposed inside the mounting cover 1, and the outer wall of scraper ring 22 is fitted and connected to the inner wall of mounting cover 1.

[0061] Connecting rods 21, one end of multiple connecting rods 21 is fixedly connected to the outer wall of mounting plate 20, and the end of multiple connecting rods 21 away from mounting plate 20 is fixedly connected to the inner wall of scraper ring 22;

[0062] It should be noted that the mounting plate 20 is sleeved on the outer wall of the unlocking rod 14 near the sealing rod 13. The outer wall of the mounting plate 20 is fixedly connected to multiple connecting rods 21. The ends of the multiple connecting rods 21 away from the mounting plate 20 are fixedly connected to the scraper ring 22. The end of the scraper ring 22 away from the connecting plate is fitted to the inside of the mounting cover 1. The end of the scraper ring 22 near the inside of the mounting cover 1 has multiple guide ports. The oil sample scraped from the inner wall of the mounting cover 1 flows through the guide ports to the connecting pipe 5 for collection. Pressing the torsion block 10 moves the push rod 11, which in turn moves the sealing rod 13. The movement of the sealing rod 13 moves the unlocking rod 14, which in turn moves the mounting plate 20. The movement of the mounting plate 20 moves the connecting rod 21, which in turn moves the scraper ring 22, causing the scraper ring 22 to move towards the oil. When valve 2 moves, the torsion block 10 is released, and the spring 17 drives the push plate 16 to move. The movement of the push plate 16 drives the limit plate 12 to move, which in turn drives the push rod 11 to move. The movement of the push rod 11 drives the sealing rod 13 to move, which in turn drives the unlocking rod 14 to move. The movement of the unlocking rod 14 drives the mounting plate 20 to move, which in turn drives the connecting rod 21 to move. The movement of the connecting rod 21 drives the scraper ring 22 to move away from the oil valve 2. Through the above operations, the scraper ring 22 sweeps back and forth against the inner wall of the mounting cover 1 to prevent oil samples from remaining inside the mounting cover 1. At the same time, during the sweeping process, the rotation of the torsion block 10 drives the scraper ring 22 to rotate, so that the swept oil sample flows along the guide port on the scraper ring 22 to the connecting pipe 5, and the swept oil sample is collected to avoid waste.

[0063] A sealing ring 19 is fixedly installed at one end of the sealing plate 18 near the oil valve 2. The end of the sealing ring 19 away from the sealing plate 18 is slidably inserted into the end of the mounting plate 20 away from the unlocking rod 14. A sealing sleeve 23 is fixedly installed on the inner wall of the sealing plate 18. The inner wall of the sealing sleeve 23 is slidably sleeved with the outer wall of the sealing rod 13.

[0064] It should be noted that the sealing ring 19 is fixedly connected to the end of the sealing plate 18 near the oil valve 2, and the end of the sealing ring 19 away from the sealing plate 18 is slidably connected to the end of the mounting plate 20 away from the unlocking rod 14. The outer wall of the sealing sleeve 23 is fixedly installed with the inner wall of the sealing plate 18, and the inner wall of the sealing sleeve 23 is slidably sleeved with the outer wall of the sealing rod 13. The sealing sleeve 23 is made of rubber. Through the cooperation of the sealing sleeve 23 and the sealing rod 13, the oil sample is prevented from entering the end of the mounting sleeve away from the oil valve 2 through the connection between the sealing rod 13 and the sealing plate 18, which would cause damage to the spring 17. When the unlocking block 15 rotates the sealing bolt 3 to its maximum length, the mounting plate 20 and the sealing ring 19 are interlocked. Through the cooperation of the mounting plate 20 and the sealing ring 19, the opening of the sealing plate 18 is blocked and sealed to prevent the oil sample from splashing to the opening of the sealing plate 18 and improve the sealing performance.

[0065] A conveying mechanism is provided at the bottom of the mounting cover 1. The conveying mechanism includes a conveying part and an adjusting part. The conveying part is inserted and connected to the bottom of the mounting cover 1, and the adjusting part is fixedly connected to the end of the conveying part away from the mounting cover 1.

[0066] Specifically, the conveying section includes:

[0067] Connecting pipe 5 is located at the bottom of mounting cover 1. One end of connecting pipe 5 is inserted into the bottom of mounting cover 1, and the end of connecting pipe 5 away from mounting cover 1 is fixedly connected to the adjustment part.

[0068] One end of each of the multiple conveying pipes 6 is inserted and connected to the end of the connecting pipe 5 away from the mounting cover 1.

[0069] Specifically, the regulating section includes:

[0070] The sealing cover 7 is fixedly connected at one end to the end of the connecting pipe 5 away from the mounting cover 1.

[0071] Rotating rod 8 is installed inside connecting pipe 5, and one end of rotating rod 8 is rotatably inserted and connected to the end of sealing cover 7 near connecting pipe 5.

[0072] The guide ball 24 is installed inside the connecting pipe 5. One end of the guide ball 24 is fixedly connected to the end of the rotating rod 8 away from the sealing cover 7. The outer wall of the guide ball 24 is rotatably connected to the inner wall of the connecting pipe 5.

[0073] Push rod 9, one end of push rod 9 is sleeved with the outer wall of the end of rotating rod 8 away from guide ball 24;

[0074] It should be noted that the connecting pipe 5 is located at the bottom of the mounting cover 1. One end of the connecting pipe 5 is inserted into the bottom of the mounting cover 1, and the end of the connecting pipe 5 away from the mounting cover 1 is fixedly connected to the sealing cover 7. Both sides of the end of the connecting pipe 5 away from the mounting cover 1 are respectively inserted into and connected to multiple conveying pipes 6. The connecting pipe 5, the conveying pipes 6 and the mounting cover 1 are connected in communication. The outer wall of one end of the rotating rod 8 is sleeved with one end of the push rod 9. The end of the rotating rod 8 away from the push rod 9 is rotatably inserted into and connected to the sealing cover 7. The rotating rod 8 is located at the bottom of the connecting pipe 5. One end is fixedly connected to the guide ball 24. The outer wall of the guide ball 24 is rotatably connected to the inner wall of the connecting pipe 5. An L-shaped conveying groove is provided on the outer wall of the guide ball 24. The sealing bolt 3 is released from the seal of the oil valve 2 by the unlocking block 15, allowing the oil sample in the oil valve 2 to flow into the mounting cover 1. The oil sample flows to the connecting pipe 5 through the mounting cover 1. One of the conveying pipes 6 is connected to the collection bag, and the other conveying pipe 6 is connected to the sampling bottle. First, rotate the push rod 9 to the conveying pipe 6 connected to the collection bag, and then... 9. Moving the rotating rod 8 moves the guide ball 24, which in turn moves the oil sample from the connecting pipe 5 to the delivery pipe 6 connected to the collection bag. The oil sample is then transported through the delivery pipe 6 into the collection bag, where the initial waste oil is collected. Once the oil sample is pure, rotating the push rod 9 to the delivery pipe 6 connected to the sampling bottle moves the rotating rod 8, which in turn moves the guide ball 24, which then transports the oil sample from the connecting pipe 5 to the collection bag. Oil samples from five points are transported to a delivery pipe 6 connected to a sampling bottle. The oil samples are then transported to the sampling bottle through the delivery pipe 6 and collected until the bottle is full. When the top of the sampling bottle slightly overflows, the push rod 9 is rotated to the middle of the multiple delivery pipes 6. The movement of the push rod 9 moves the rotating rod 8, which in turn moves the guide ball 24. The guide ball 24 restricts the flow of oil samples in the connecting pipe 5, preventing the oil samples from flowing into the delivery pipe 6, thus completing the collection of oil samples from the transformer.

[0075] A limiting plate 12 is sleeved on the outer wall of the push rod 11 near the sealing rod 13. A push plate 16 is attached to the end of the limiting plate 12 near the sealing rod 13. The inner wall of the push plate 16 is slidably sleeved with the outer wall of the push rod 11. A spring 17 is sleeved on the outer wall of the sealing rod 13. One end of the spring 17 is fixedly connected to the end of the sealing plate 18 away from the oil valve 2, and the other end of the spring 17 is fixedly connected to the end of the push plate 16 away from the limiting plate 12.

[0076] It should be noted that the limiting plate 12 is sleeved on the outer wall of the push rod 11 near the sealing rod 13, and the end of the limiting plate 12 near the sealing rod 13 is fitted and connected to the push plate 16. The inner wall of the push rod 11 is slidably sleeved with the outer wall of the push rod 11. The spring 17 is sleeved on the outer wall of the sealing rod 13. One end of the spring 17 is fixedly connected to the end of the sealing plate 18 away from the oil valve 2, and the other end of the spring 17 is fixedly connected to the end of the push plate 16 away from the limiting plate 12. After the oil sample is collected, the torsion block 10 is rotated, which drives the push rod 11 to rotate. The rotation of the push rod 11 drives the sealing rod 13 to rotate. The rotation of the sealing rod 13 drives the unlocking rod 14 to rotate. The rotation of the unlocking rod 14 drives the unlocking block 15 to rotate. The unlocking block 15 then drives the... Rotating the dynamic sealing bolt 3 seals the oil valve 2. Loosening the toggle block 10 allows the spring 17 to push the push plate 16, which in turn moves the limit plate 12. The limit plate 12 then moves the push rod 11, causing it to fit against the end of the mounting cover 1 furthest from the oil valve 2. The limit plate 12 restricts the movement of the push rod 11. The push rod 11 then moves the sealing rod 13, which in turn moves the unlocking rod 14. The unlocking rod 14 then moves the unlocking block 15, separating it from the sealing bolt 3. This prevents accidental contact with the toggle block 10, which could cause the unlocking block 15 to rotate and loosen the sealing bolt 3 from the oil valve 2, thus improving stability.

[0077] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A portable transformer oil sampling device, used for opening the internal sealing bolt (3) of an oil valve (2), characterized in that, include: Mounting cover (1), one end of which is threadedly connected to the outer wall of oil valve (2); A sealing plate (18) is disposed inside the mounting cover (1), and the outer wall of the sealing plate (18) is interlocked with the inner wall of the mounting cover (1). The unlocking mechanism is located inside the mounting cover (1). The unlocking mechanism includes an unlocking part and a pushing part. The pushing part is slidably connected to the end of the mounting cover (1) away from the oil valve (2). The unlocking part is fixedly connected to the end of the pushing part near the oil valve (2). The conveying mechanism is located at the bottom of the mounting cover (1). The conveying mechanism includes a conveying part and an adjusting part. The conveying part is inserted and connected to the bottom of the mounting cover (1). The adjusting part is fixedly connected to the end of the conveying part away from the mounting cover (1).

2. The portable transformer oil sampling device according to claim 1, characterized in that, The propulsion unit includes: Push rod (11), the push rod (11) is disposed inside the mounting cover (1), and one end of the push rod (11) is slidably inserted into the inner wall of the end of the mounting cover (1) away from the oil valve (2); Torque block (10), the torsion block (10) is fixedly installed at the end of the push rod (11) away from the oil valve (2); A sealing rod (13) is disposed inside the mounting cover (1). One end of the sealing rod (13) is fixedly connected to the end of the push rod (11) away from the torsion block (10), and the end of the sealing rod (13) away from the push rod (11) is fixedly connected to the unlocking part.

3. The portable transformer oil sampling device according to claim 2, characterized in that, The unlocking unit includes: Unlocking rod (14), the unlocking rod (14) is disposed inside the mounting cover (1), and one end of the unlocking part is fixedly connected to the end of the sealing rod (13) away from the push rod (11); Unlocking block (15), which is fixedly installed at the end of the unlocking rod (14) away from the sealing rod (13), and the unlocking block (15) is adapted to the sealing bolt (3).

4. The portable transformer oil sampling device according to claim 3, characterized in that, The unlocking rod (14) is fitted with an installation plate (20) on the outer wall of one end near the sealing rod (13). The outer wall of the installation plate (20) is provided with a scraping component, which is in close contact with the inner wall of the installation cover (1).

5. A portable transformer oil sampling device according to claim 4, characterized in that, The scraping component includes: Scraper ring (22), the scraper ring (22) is disposed inside the mounting cover (1), and the outer wall of the scraper ring (22) is fitted and connected to the inner wall of the mounting cover (1); Connecting rods (21), one end of the plurality of connecting rods (21) is fixedly connected to the outer wall of the mounting plate (20), and the end of the plurality of connecting rods (21) away from the mounting plate (20) is fixedly connected to the inner wall of the scraper ring (22).

6. A portable transformer oil sampling device according to claim 4, characterized in that, A sealing ring (19) is fixedly installed on one end of the sealing plate (18) near the oil valve (2). The end of the sealing ring (19) away from the sealing plate (18) is slidably inserted into the end of the mounting plate (20) away from the unlocking rod (14). A sealing sleeve (23) is fixedly installed on the inner wall of the sealing plate (18). The inner wall of the sealing sleeve (23) is slidably sleeved with the outer wall of the sealing rod (13).

7. A portable transformer oil sampling device according to claim 1, characterized in that, The conveying unit includes: Connecting pipe (5), the connecting pipe (5) is disposed at the bottom of the mounting cover (1), one end of the connecting pipe (5) is inserted and connected to the bottom of the mounting cover (1), and the end of the connecting pipe (5) away from the mounting cover (1) is fixedly connected to the adjustment part; The delivery pipe (6) has one end inserted into and connected to the end of the connecting pipe (5) away from the mounting cover (1).

8. A portable transformer oil sampling device according to claim 7, characterized in that, The adjustment unit includes: A sealing cap (7) is fixedly connected at one end to the end of the connecting pipe (5) away from the mounting cover (1); Rotating rod (8), the rotating rod (8) is set inside the connecting pipe (5), and one end of the rotating rod (8) is rotatably inserted and connected to the end of the sealing cover (7) near the connecting pipe (5); A guide ball (24) is disposed inside the connecting pipe (5). One end of the guide ball (24) is fixedly connected to the end of the rotating rod (8) away from the sealing cover (7). The outer wall of the guide ball (24) is rotatably connected to the inner wall of the connecting pipe (5). Push rod (9), one end of which is sleeved on the outer wall of the end of the rotating rod (8) away from the guide ball (24).

9. A portable transformer oil sampling device according to claim 2, characterized in that, The outer wall of the push rod (11) near the sealing rod (13) is fitted with a limiting plate (12). The end of the limiting plate (12) near the sealing rod (13) is fitted with a push plate (16). The inner wall of the push plate (16) is slidably fitted with the outer wall of the push rod (11). The outer wall of the sealing rod (13) is fitted with a spring (17). One end of the spring (17) is fixedly connected to the end of the sealing plate (18) away from the oil valve (2). The other end of the spring (17) is fixedly connected to the end of the push plate (16) away from the limiting plate (12).

10. A portable transformer oil sampling device according to claim 1, characterized in that, The mounting cover (1) and the sealing plate (18) are both provided with observation grooves at the ends away from the oil valve (2), and observation windows (4) are interspersed in the observation grooves.

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