An outdoor compact intelligent transformer box for electrical control

Abstract

The present invention relates to the technical field of transformer boxes, and specifically discloses an outdoor compact intelligent transformer box for electrical control, comprising a box body, a transformer disposed within the box body, a first oil box and a second oil box disposed on one side of the transformer, the first oil box and the second oil box both being connected to the interior of the transformer via a circular tube, the first oil box and the second oil box being connected via an oil pipe, a first slide plate and a first push rod disposed within the first oil box, a second slide plate and a second push rod disposed within the second oil box, and an oil pot being detachably mounted on a side of the oil pipe away from the transformer. The oil in the transformer can be automatically sampled by the first oil box, the second oil box, and the oil pot, and when sampling is required, there is no need for staff to drain the oil through the oil drain hole on the transformer, thereby avoiding waste of oil and preventing the oil sludge at the bottom of the transformer from affecting the accuracy of the oil sample. The sampling location is in the middle of the transformer, and the state of the oil sample is closest to the working state within the transformer, further increasing the accuracy of the oil sample.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer boxes, and in particular to an outdoor compact intelligent transformer box for electrical control. Background Art

[0002] The intelligent substation consists of a high-voltage unit, a transformer unit, and a low-voltage unit. It is a device that receives and distributes electrical energy and controls, protects, and detects circuits.

[0003] There is a transformer in the substation box. When the transformer is in use, it is necessary to sample and test the oil in the transformer. Generally, the oil drain hole at the bottom of the transformer is opened to release some of the oil in the transformer, and then the released oil is tested to judge the overall performance of the transformer oil and whether it needs to be replaced. However, when draining the oil from the bottom of the transformer, since the area near the oil drain hole at the bottom of the transformer is generally relatively stagnant oil and has a high sludge content, it is necessary to drain several liters of oil before starting sampling, which will cause waste of oil. In addition, the oil at the bottom may still bring out the sludge at the bottom when it flows out. Therefore, the oil released from the bottom is difficult to accurately reflect the overall performance of the oil inside the transformer. In addition, when taking the oil sample, the oil sample is in contact with the air for a long time, which will also affect the test results of the oil sample. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an outdoor compact intelligent transformer box for electrical control.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A compact outdoor intelligent transformer box for electrical control includes a box body, a transformer is arranged inside the box body, a first oil box and a second oil box are arranged on one side of the transformer, the first oil box and the second oil box are both connected to the interior of the transformer through a circular tube, the first oil box and the second oil box are connected through an oil pipe, a first slide plate and a first push rod are arranged in the first oil box, a second slide plate and a second push rod are arranged in the second oil box, and an oil pot is detachably installed on the side of the oil pipe away from the transformer.

[0007] Preferably, the first slide is slidably connected to the inner wall of the first oil box, the top of the first push rod is fixedly connected to the top of the inside of the first oil box, the bottom of the first push rod is fixedly connected to the top of the first slide, the second slide is slidably connected to the inner wall of the second oil box, the bottom of the second push rod is slidably connected to the inner wall of the second oil box, and the top of the second push rod is fixedly connected to the second slide.

[0008] Preferably, a through hole is provided at the top of the first oil box, and a similar through hole is provided at the bottom of the second oil box, and bellows are provided in both the first oil box and the second oil box.

[0009] Preferably, a vertical plate is slidably connected to the inner wall of the first oil box in the vertical direction, and a horizontal plate is horizontally connected to the bottom of the vertical plate. The vertical plate and the circular tube are located on the same side, and the vertical plate blocks the circular tube. A plurality of oil holes are provided on the vertical plate, and a push plate is fixedly connected to the bottom of the first slide plate, and the bottom of the push plate can abut against the horizontal plate.

[0010] Preferably, the push plate is provided with the same oil hole as the vertical plate, push blocks are fixedly connected to both sides of the push plate, the bottom of the push block is fixedly connected to the first spring, and the bottom of the first spring is connected to the horizontal plate.

[0011] Preferably, a baffle is provided below the vertical plate, one side of the baffle is fixedly connected to the inner wall of the first oil box, and a second spring is provided on the top of the baffle, and the horizontal plate can contact the second spring during the downward movement.

[0012] Preferably, an oil outlet hole is opened on one side of the oil pipe, an inner ring is fixed on the outside of the oil outlet hole, a horizontal groove is opened horizontally on the inner side of the inner ring, the outer side of the inner ring is threadedly connected to the oil pot, a vertical rod is fixedly connected to the bottom of the first slide plate, a block for blocking the oil outlet hole is connected to the middle of the vertical rod, and a plurality of trumpet-shaped push rings are also provided on the outside of the vertical rod.

[0013] Preferably, a piston is installed in the oil pot, and a sliding rod is connected to the end of the piston close to the oil pipe. A mounting sleeve is provided on the outside of the sliding rod, and the outer diameter of the mounting sleeve is smaller than the inner diameter of the inner ring. A sealing ring is slidably installed on the outside of the mounting sleeve, and a convex point is provided on the end face where the inner ring contacts the sealing ring, and a pull rod is provided on the side of the piston away from the sliding rod.

[0014] Preferably, a partition is provided on one side of the box body near the box door, a card slot is provided at the bottom of the box body, the bottom of the partition is stuck in the card slot, and an installation slot is opened on the side of the partition close to the box door, and multiple heating tubes are installed in the installation slot.

[0015] Preferably, an infrared sensor is provided at the bottom of one side of the partition close to the door, and the infrared sensor is located in the installation groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The oil in the transformer can be automatically sampled through the first and second oil boxes and the oil pot. The first and second push rods are both electric push rods. When sampling is needed, there is no need for staff to drain the oil through the oil drain hole on the transformer, which avoids oil waste and prevents the oil sludge at the bottom of the transformer from affecting the accuracy of the oil sample. The sampling position is in the middle of the transformer, and the state of the oil sample is closest to the working state of the transformer. Before sampling, the oil in the oil pipe is fully flowing, further increasing the accuracy of the oil sample. When frequent oil sampling in the transformer is required, the operation is simpler and more convenient, reducing oil waste.

[0018] 2. The oil in the oil pipe will directly enter the oil pot, so the oil in the oil pipe will basically not come into contact with the air, avoiding the contact of impurities and moisture in the air with the oil, which increases the accuracy of the detection. Therefore, sampling can be carried out even in rainy weather, adapting to more working environments.

[0019] 3. When a small animal wants to enter the box through the door, the infrared sensor detects the small animal and the heating tube is powered on to heat it, causing the temperature on the surface of the heating tube to rise rapidly and maintain for a period of time. At this time, the small animal will feel uncomfortable when approaching the heating tube and will stay away from the heating tube and partition, which will drive away the small animal and prevent it from entering the box through the gap in the door. It also prevents the small animal from building a nest at the door. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the transformer box shown in the present invention;

[0021] Figure 2 This is a schematic structural diagram of the first oil box and the second oil box shown in the present invention;

[0022] Figure 3 It is a cross-sectional view of the first oil box and the second oil box shown in the present invention;

[0023] Figure 4 This is a schematic structural diagram of the push plate and push block shown in the present invention;

[0024] Figure 5 It is a structural schematic diagram of the vertical plate and the horizontal plate shown in the present invention;

[0025] Figure 6 It is a partial cross-sectional view of the oil pipe shown in the present invention;

[0026] Figure 7 It is a cross-sectional view of the oil pot shown in the present invention;

[0027] Figure 8 It is a cross-sectional view of the mounting sleeve shown in the present invention;

[0028] Figure 9 Schematic diagram of the structure of the partition shown in the present invention.

[0029] In the figure: 1. Box body; 2. Transformer; 3. First oil box; 4. Second oil box; 5. Oil pipe; 6. Oil pot; 7. Round pipe; 8. First push rod; 9. Second push rod; 10. First slide plate; 11. Vertical rod; 12. Push ring; 13. Stop block; 14. Second slide plate; 15. Vertical plate; 16. Push plate; 17. Oil hole; 18. Horizontal plate; 19. Horizontal groove; 20. Push block; 21. First spring; 22. Baffle; 23. Second spring; 24. Inner ring; 25. Mounting sleeve; 26. Sliding rod; 27. Piston; 28. Pull rod; 29. ​​Partition; 30. Heating tube; 31. Infrared sensor; 32. Mounting groove; 33. Sealing ring; 34. Bellows. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] Reference Figure 1-9 A compact outdoor intelligent substation for electrical control comprises a box body 1, a transformer 2 is provided in the box body 1, a first oil box 3 and a second oil box 4 are provided on one side of the transformer 2, the first oil box 3 and the second oil box 4 are both connected to the inside of the transformer 2 through a circular tube 7, the first oil box 3 and the second oil box 4 are connected through an oil pipe 5, a first slide 10 and a first push rod 8 are provided in the first oil box 3, a second slide 14 and a second push rod 9 are provided in the second oil box 4, and an oil pot 6 is detachably installed on the side of the oil pipe 5 away from the transformer 2.

[0032] As a technical optimization solution of the present invention, the first slide 10 is slidably connected to the inner wall of the first oil box 3, the top of the first push rod 8 is fixedly connected to the top of the interior of the first oil box 3, the bottom of the first push rod 8 is fixedly connected to the top of the first slide 10, the second slide 14 is slidably connected to the inner wall of the second oil box 4, the bottom of the second push rod 9 is slidably connected to the inner wall of the second oil box 4, and the top of the second push rod 9 is fixedly connected to the second slide 14. When the first slide 10 moves downward, it can squeeze the oil in the first oil box 3. At this time, the second slide 14 moves downward synchronously to avoid large changes in the oil pressure in the oil pipe 5. When oil needs to enter the oil pot 6, the distance the first slide 10 moves downward is greater than the distance the second slide 14 moves downward, so that the oil can be pressed into the oil pot 6.

[0033] As a technical optimization solution of the present invention, a through-hole is provided at the top of the first oil box 3, and a similar through-hole is provided at the bottom of the second oil box 4. Bellows 34 are provided in both the first and second oil boxes 3 and 4. The top of the bellows 34 in the first oil box 3 is fixedly connected to the inner wall of the first oil box 3, and the bottom is fixedly connected to the first slide 10. The top of the bellows 34 in the second oil box 4 is fixedly connected to the second slide 14, and the bottom is fixedly connected to the inner wall of the second oil box 4. When the first slide 10 or the second slide 14 moves, air can enter the bellows through the through-hole, facilitating the flow of air into the first slide 10 or the second slide 14.

[0034] As a technical optimization solution of the present invention, a vertical plate 15 is slidably connected to the inner wall of the first oil box 3 in the vertical direction, and a horizontal plate 18 is horizontally connected to the bottom of the vertical plate 15. The vertical plate 15 and the circular tube 7 are located on the same side, and the vertical plate 15 blocks the circular tube 7. A plurality of oil holes 17 are provided on the vertical plate 15. A push plate 16 is fixedly connected to the bottom of the first slide plate 10, and the bottom of the push plate 16 can abut against the horizontal plate 18. The first push rod 8 extends and pushes the first slide plate 10 downward, and the first slide plate 10 drives the push plate 16 and the vertical rod 11 to move downward. When the first spring 21 is in the initial state, the oil holes 17 on the push plate 16 and the vertical plate 15 are in the overlapping state, and the oil in the circular tube 7 can enter the first oil box 3. Under the action of the first spring 21, the vertical plate 15 and the horizontal plate 18 follow the push plate 16 to move. At this time, the movement distance of the first slide plate 10 is small, and the horizontal plate 18 does not contact the second spring 23. When the vertical rod 11 moves downward, it drives the push ring 12 and the stopper 13 to move downward. The push ring 12 will drive the oil in the oil pipe 5 to flow. When the first push rod 8 extends, the second push rod 9 shortens to prevent air from being generated in the oil pipe 5.

[0035] As a technical optimization solution of the present invention, the push plate 16 is provided with an oil hole 17 that is the same as the vertical plate 15, and push blocks 20 are fixedly connected on both sides of the push plate 16. The bottom of the push block 20 is fixedly connected to a first spring 21, and the bottom of the first spring 21 is connected to the horizontal plate 18.

[0036] As a technical optimization solution of the present invention, an oil outlet is formed on one side of the oil pipe 5. An inner ring 24 is fixed to the outside of the oil outlet. A horizontal groove 19 is formed on the inside of the inner ring 24. The outer side of the inner ring 24 is threadedly connected to the oil pot 6. A vertical rod 11 is fixedly connected to the bottom of the first slide 10. A block 13 for blocking the oil outlet is connected to the middle of the vertical rod 11. A plurality of trumpet-shaped push rings 12 are also provided on the outside of the vertical rod 11. When oil enters the oil pot 6, the piston 27 begins to move away from the oil pipe 5, allowing more oil to enter the oil pot 6. After a predetermined amount of oil has entered the oil pot 6, the first push rod 8 resets, driving the vertical rod 11 and the block 13 to move upward, and the block 13 once again blocks the oil outlet.

[0037] As a technical optimization solution of the present invention, a baffle 22 is provided below the vertical plate 15. One side of the baffle 22 is fixedly connected to the inner wall of the first oil box 3. A second spring 23 is provided on the top of the baffle 22. As the horizontal plate 18 moves downward, it can contact the second spring 23. As the extension distance of the first push rod 8 increases, the movement distance of the push plate 16 and the vertical plate 15 increases. When the horizontal plate 18 contacts the second spring 23, the spring constant of the first spring 21 is less than the spring constant of the second spring 23. The first spring 21 is first compressed, causing relative displacement between the vertical plate 15 and the push plate 16. Then, the oil hole 17 in the push plate 16 and the oil hole 17 in the vertical plate 15 become misaligned, thereby preventing the oil in the circular tube 7 from flowing into the first oil box 3. At this time, the first push rod 8 continues to extend, and the block 13 no longer blocks the oil outlet. The oil pressure in the oil pipe 5 increases, and the oil in the oil pipe 5 enters the oil pot 6 through the horizontal groove 19 in the inner ring 24, thus starting sampling.

[0038] As a technical optimization solution of the present invention, a piston 27 is installed in the oil pot 6. The end of the piston 27 near the oil pipe 5 is connected to a slide rod 26. A mounting sleeve 25 is provided on the outside of the slide rod 26. The outer diameter of the mounting sleeve 25 is smaller than the inner diameter of the inner ring 24. A sealing ring 33 is slidably mounted on the outside of the mounting sleeve 25. The end surface of the inner ring 24 where it contacts the sealing ring 33 is provided with a bump. A pull rod 28 is provided on the side of the piston 27 away from the slide rod 26. After a predetermined amount of oil enters the oil pot 6, the staff twists the oil pot 6 to separate the end of the oil pot 6 from the inner ring 24. During the process of unscrewing the oil pot 6, the sealing ring 33 can seal the oil pot 6 to a certain extent, preventing oil leakage after the oil pot 6 is unscrewed.

[0039] As a technical optimization solution of the present invention, a partition 29 is provided on the side of the box body 1 near the box door, and a card slot is provided at the bottom of the box body 1, and the bottom of the partition 29 is stuck in the card slot. A mounting slot 32 is provided on the side of the partition 29 near the box door of the box body 1, and multiple heating tubes 30 are installed in the mounting slot 32; an infrared sensor 31 is provided at the bottom of the side of the partition 29 near the box door, and the infrared sensor 31 is located in the mounting slot 32; when a small animal wants to enter the inside of the box body 1 through the box door of the box body 1, after the infrared sensor 31 detects the small animal, the heating tube 30 is energized and heated, so that the temperature on the surface of the heating tube 30 rises rapidly and maintains for a period of time. At this time, the small animal will feel uncomfortable when approaching the heating tube 30, and will stay away from the heating tube 30 and the partition 29, which has the effect of driving away the small animal, preventing the small animal from entering the inside of the box body 1 through the gap in the box door, and also preventing the small animal from building a nest at the box door.

[0040] When the present invention is in use, the box body 1 and the transformer 2 are first installed in a predetermined position. Before sampling the oil in the transformer 2, the first push rod 8 extends and pushes the first slide plate 10 downward. The first slide plate 10 drives the push plate 16 and the vertical rod 11 to move downward. When the first spring 21 is in the initial state, the oil holes 17 on the push plate 16 and the vertical plate 15 are in a coincident state, and the oil in the circular tube 7 can enter the first oil box 3. Under the action of the first spring 21, the vertical plate 15 and the horizontal plate 18 follow the movement of the push plate 16. At this time, the movement distance of the first slide plate 10 is small, the horizontal plate 18 does not contact the second spring 23, and the vertical rod 11 moves downward while driving the push ring 12 and the stopper 13 to move downward. The push ring 12 will drive the oil in the oil pipe 5 to flow. When the first push rod 8 extends, the second push rod 9 shortens to prevent air from being generated in the oil pipe 5. After the first push rod 8 and the second push rod 9 perform reciprocating motions many times, the oil in the oil pipe 5 has basically completed the circulation. At this time, the extension distance of the first push rod 8 increases, and the movement distance of the push plate 16 and the vertical plate 15 increases. When the horizontal plate 18 contacts the second spring 23, the spring constant of the first spring 21 is smaller than the spring constant of the second spring 23. The first spring 21 is compressed first, and a relative displacement occurs between the vertical plate 15 and the push plate 16. Then, the oil hole 17 on the push plate 16 and the oil hole 17 on the vertical plate 15 are misaligned, thereby preventing the oil in the circular tube 7 from flowing into the first oil box 3. At this time, the first push rod 8 continues to extend. At this time, the block 13 no longer blocks the oil outlet hole, and the oil pressure in the oil pipe 5 increases. The oil in the oil pipe 5 will pass through the inner ring 2 4 enters the oil pot 6. As the oil enters the oil pot 6, the piston 27 begins to move in the direction away from the oil pipe 5, so that more oil enters the oil pot 6. After a predetermined amount of oil enters the oil pot 6, the first push rod 8 is reset, driving the vertical rod 11 and the stopper 13 to move upward, and the stopper 13 blocks the oil outlet hole again. In the process of the first push rod 8 moving upward, since part of the oil in the oil pipe 5 enters the oil pot 6, the second push rod 9 needs to move up a certain distance so that the oil pressure in the oil pipe 5 does not change.

[0041] After a predetermined amount of oil has entered the oil pot 6, the operator twists the oil pot 6 to separate the end of the oil pot 6 from the inner ring 24. During the process of unscrewing the oil pot 6, the sealing ring 33 can seal the oil pot 6 to a certain extent, preventing oil leakage after unscrewing the oil pot 6. Automatic sampling of the oil in the transformer 2 is possible. The first push rod 8 and the second push rod 9 are both electric push rods. When sampling is required, the operator does not need to drain the oil through the oil drain hole on the transformer 2, thereby avoiding waste of oil and preventing the oil sludge at the bottom of the transformer 2 from affecting the accuracy of the oil sample. The sampling position is in the middle of the transformer 2, and the state of the oil sample is closest to the working state of the transformer 2. Before sampling, the oil in the oil pipe 5 is fully allowed to flow, further increasing the accuracy of the oil sample. When frequent sampling of the oil in the transformer 2 is required, the operation is simpler and more convenient, reducing oil waste.

[0042] Generally, rainy weather is avoided when taking oil samples. However, some areas may experience long periods of rain during the plum rain season. Sampling in rainy weather may affect the accuracy of oil detection. Since the oil in the oil pipe 5 directly enters the oil pot 6, the oil in the oil pipe 5 will basically not come into contact with the air, preventing impurities and moisture in the air from coming into contact with the oil, thereby increasing the accuracy of detection. Therefore, sampling can be carried out even in rainy weather, adapting to more working environments.

[0043] When the vertical rod 11 moves downward, the push ring 12 can accelerate the flow efficiency of the oil in the oil pipe 5.

[0044] A slide groove is vertically opened on the outer wall of the mounting sleeve 25 , a slider is provided in the slide groove, a return spring is installed on the top of the slider, the top of the return spring is connected to the inner wall of the slide groove, and the slider is fixedly connected to the sealing ring 33 .

[0045] The raised points on the inner ring 24 can prevent the sealing ring 33 from completely blocking the transverse groove 19 and the oil outlet hole. When the oil enters the oil pot 6, the pull rod 28 can be manually pulled to facilitate the oil to enter the oil pot 6.

[0046] When a small animal wants to enter the box 1 through the door of the box 1, the infrared sensor 31 detects the small animal and the heating tube 30 is powered on for heating, causing the temperature of the surface of the heating tube 30 to rise rapidly and maintain for a period of time. At this time, the small animal will feel uncomfortable when approaching the heating tube 30, and will stay away from the heating tube 30 and the partition 29, which will drive away the small animal and prevent it from entering the box 1 through the gap in the door, and also prevent the small animal from building a nest at the door.

[0047] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An outdoor compact intelligent transformer box for electrical control, comprising a box body (1), characterized in that: The box (1) is provided with a transformer (2), and a first oil box (3) and a second oil box (4) are provided on one side of the transformer (2). The first oil box (3) and the second oil box (4) are both connected to the inside of the transformer (2) through a circular tube (7). The first oil box (3) and the second oil box (4) are connected through an oil pipe (5). A first slide plate (10) and a first push rod (8) are provided in the first oil box (3), and a second slide plate (14) and a second push rod (9) are provided in the second oil box (4). An oil pot (6) for oil sampling is detachably installed on a side of the oil pipe (5) away from the transformer (2), and the sampling position is located in the middle of the transformer (2). A vertical plate (15) is slidably connected to the inner wall of the first oil box (3) in the vertical direction, and a horizontal plate (18) is horizontally connected to the bottom of the vertical plate (15). The vertical plate (15) and the circular tube (7) are located on the same side, and the vertical plate (15) blocks the circular tube (7). A plurality of oil holes (17) are opened on the vertical plate (15). A push plate (16) is fixedly connected to the bottom of the first slide plate (10), and the bottom of the push plate (16) can abut against the horizontal plate (18); An oil outlet hole is formed on one side of the oil pipe (5), an inner ring (24) is fixed on the outer side of the oil outlet hole, a transverse groove (19) is formed horizontally on the inner side of the inner ring (24), and the outer side of the inner ring (24) is threadedly connected to the oil pot (6). A vertical rod (11) is fixedly connected to the bottom of the first slide plate (10), a block (13) for blocking the oil outlet hole is connected to the middle of the vertical rod (11), and a plurality of trumpet-shaped push rings (12) are also provided on the outer side of the vertical rod (11).

2. The outdoor compact intelligent transformer box for electrical control according to claim 1, characterized in that: The first slide plate (10) is slidably connected to the inner wall of the first oil box (3), the top of the first push rod (8) is fixedly connected to the top of the inner portion of the first oil box (3), the bottom of the first push rod (8) is fixedly connected to the top of the first slide plate (10), the second slide plate (14) is slidably connected to the inner wall of the second oil box (4), the bottom of the second push rod (9) is slidably connected to the inner wall of the second oil box (4), and the top of the second push rod (9) is fixedly connected to the second slide plate (14).

3. The outdoor compact intelligent transformer box for electrical control according to claim 2, characterized in that: A through hole is provided on the top of the first oil box (3), and a similar through hole is provided on the bottom of the second oil box (4). Bellows (34) are provided in both the first oil box (3) and the second oil box (4).

4. The outdoor compact intelligent transformer box for electrical control according to claim 3, characterized in that: The push plate (16) is provided with an oil hole (17) identical to that of the vertical plate (15). Push blocks (20) are fixedly connected to both sides of the push plate (16). A first spring (21) is fixedly connected to the bottom of the push block (20). The bottom of the first spring (21) is connected to the horizontal plate (18).

5. The outdoor compact intelligent transformer box for electrical control according to claim 4, characterized in that: A baffle (22) is provided below the vertical plate (15), one side of the baffle (22) is fixedly connected to the inner wall of the first oil box (3), and a second spring (23) is provided on the top of the baffle (22). The horizontal plate (18) can contact the second spring (23) when it moves downward.

6. The outdoor compact intelligent transformer box for electrical control according to claim 5, characterized in that: A piston (27) is installed in the oil pot (6), and a sliding rod (26) is connected to one end of the piston (27) close to the oil pipe (5). A mounting sleeve (25) is provided on the outside of the sliding rod (26). The outer diameter of the mounting sleeve (25) is smaller than the inner diameter of the inner ring (24). A sealing ring (33) is slidably installed on the outer side of the mounting sleeve (25). A convex point is provided on the end surface of the inner ring (24) in contact with the sealing ring (33). A pull rod (28) is provided on the side of the piston (27) away from the sliding rod (26).

7. The outdoor compact intelligent transformer box for electrical control according to claim 1, characterized in that: A partition (29) is provided on one side of the box body (1) near the box door, a card slot is provided on the bottom of the box body (1), the bottom of the partition (29) is stuck in the card slot, and a mounting slot (32) is provided on one side of the partition (29) near the box door of the box body (1), and a plurality of heating tubes (30) are installed in the mounting slot (32).

8. The outdoor compact intelligent transformer box for electrical control according to claim 7, characterized in that: An infrared sensor (31) is provided at the bottom of one side of the partition (29) close to the box door, and the infrared sensor (31) is located in the installation groove (32).

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