Transformer for transformer substation in high altitude area

Abstract

The transformer for the transformer substation in the high altitude area comprises a transformer body, two side supporting frames are welded to the left side of the transformer body, a supporting leg is welded to the upper end of each side supporting frame, an oil storage tank is jointly welded to the tops of the two supporting legs, and a plurality of cooling fins are welded to the outer wall of the oil storage tank; an oil outlet pipe is fixedly connected to the middle of the oil storage tank, the other end of the oil outlet pipe is connected into the transformer body, a hollow cylinder is fixedly connected to the bottom of the oil storage tank, an oil return pipe is fixedly connected to the bottom of the hollow cylinder, the tail end of the oil return pipe is connected into the transformer body, and a transition sleeve is rotationally connected to the middle of the hollow cylinder. The inner side of the transition sleeve is provided with a filtering mechanism, the side edge of the transition sleeve is provided with an opening and closing locking mechanism, and the transformer for the transformer substation in the high-altitude area has the advantages that the applicability of an oil way in the high-altitude area is good, and the oil way can be filtered.

Description

Technical Field

[0001] The invention belongs to the technical field of transformers, and in particular relates to a transformer for substations in high altitude areas. Background Art

[0002] Transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are primary coil, secondary coil and iron core (magnetic core). In the process of circuit transmission, transformer is a device that converts high voltage in the transportation line into the required voltage. It is an important power equipment. When the transformer is working, the current passing through the coil will generate heat, so it needs to be cooled. The circulating oil in the oil-immersed transformer plays the role of cooling. Oil-immersed transformers can be divided into iron core transformers and iron shell transformers according to their structure.

[0003] After searching, in the invention application patent with application publication number CN113764166A, an oil-immersed transformer is disclosed, which belongs to the field of transformers. It includes an oil tank and an iron core and winding installed in the oil tank. The oil tank is filled with transformer oil. A radiator assembly is installed on the outside of the oil tank. The radiator assembly includes a heat sink group. The heat sink group includes a plurality of heat sinks, a convergence bar for fixing the plurality of heat sinks, an oil inlet pipe and an oil outlet pipe. The heat sink is hollow inside and is vertically arranged. One end of the oil inlet pipe is connected to the upper ends of the plurality of heat sinks, and the other end is connected to the upper part of the oil tank. One end of the oil outlet pipe is connected to the lower ends of the plurality of heat sinks, and the other end is connected to the lower part of the oil tank. One end of the oil inlet pipe connected to the heat sink is bent downward in an arc, and one end of the oil inlet pipe connected to the oil tank is arranged horizontally.

[0004] However, when the existing oil-immersed transformer is used in high altitude areas, the temperature changes greatly at high altitudes. At low temperatures, the oil in the transformer becomes thick, which leads to poor circulation in the pipeline, and debris falls off the inner wall of the pipeline and mixes into the oil, causing oil blockage. Therefore, it is necessary to design a transformer for substations in high altitude areas. Summary of the invention

[0005] The purpose of the present invention is to provide a transformer for a substation in a high altitude area in order to solve the above-mentioned problem, thereby solving the problem mentioned in the background technology.

[0006] In order to solve the above problems, the present invention provides a technical solution:

[0007] A transformer for a substation in a high altitude area comprises a transformer body, two side support frames are welded to the left side of the transformer body, and a support leg is welded to the upper end of each side support frame, an oil storage tank is welded to the top of the two support legs, a plurality of heat dissipation fins are welded to the outer wall of the oil storage tank, an oil outlet pipe is fixedly connected to the middle of the oil storage tank, the other end of the oil outlet pipe is connected to the transformer body, a hollow cylinder is fixedly connected to the bottom of the oil storage tank, an oil return pipe is fixedly connected to the bottom of the hollow cylinder, the end of the oil return pipe is connected to the transformer body, a transition sleeve is rotatably connected to the middle of the hollow cylinder, a filtering mechanism is arranged on the inner side of the transition sleeve, and an opening and closing locking mechanism is arranged on the side of the transition sleeve.

[0008] Preferably, an electric motor is fixedly mounted on the back of the oil storage tank, the output shaft of the electric motor passes through the oil storage tank and is connected to the oil storage tank through a sealed bearing, the end of the output shaft is fixedly connected to a crankshaft, the crankshaft passes through the oil storage tank and is connected to the oil storage tank through a sealed bearing, a cooling impeller is fixedly mounted on one end of the crankshaft located outside the oil storage tank, a cleaning assembly is provided on the shaft body of the crankshaft, a movable sleeve is rotatably sleeved on the bent portion of the crankshaft, a connecting arm is movably connected to the inside of the movable sleeve, a piston is movably connected to the other end of the connecting arm, and the piston is slidably connected to the inner side of the hollow cylinder.

[0009] Preferably, a through hole is provided inside the piston, and the through hole penetrates the piston, and a limit block is fixedly connected inside the piston, and a slide bar is fixedly connected to the bottom of the limit block, and the slide bar penetrates the piston and is slidably connected to the piston, and a baffle is fixedly connected to the bottom of the slide bar, and the baffle is in contact with the piston, and a spring 1 is sleeved on the outside of the rod body of the slide bar, and one end of the spring 1 is fixedly connected to the limit block, and the other end of the spring 1 is fixedly connected to the inner surface of the piston. When the piston moves upward, it is separated from the baffle, and the through hole in the piston will be exposed, and the oil will enter the top of the piston through the through hole and smoothly enter the oil storage tank, and when the piston moves downward, the piston contacts the baffle again, which can prevent the oil in the oil storage tank from being pressed into the return oil pipe.

[0010] Preferably, a fixing frame is fixedly connected to the bottom of the baffle, and the end of the fixing frame is fixedly connected to the inner wall of the hollow tube. The setting of the fixing frame has a supporting and fixing effect on the baffle.

[0011] Preferably, the upper and lower ends of the side of the transition sleeve are fixedly connected with fixing pins, and the fixing pins are rotatably connected to the hollow cylinder. The setting of the fixing pins facilitates the rotation of the transition sleeve in the hollow cylinder.

[0012] Preferably, the outer wall of the oil storage tank is fixedly connected with a fixing column, the end of the fixing column is fixedly connected with a protective cover, and the protective cover is wrapped around the outer side of the oil storage tank. The setting of the protective cover has a protective effect on the oil storage tank and is also convenient for drainage of the heat dissipation impeller.

[0013] Preferably, the filtering mechanism includes a filter screen fixedly connected to the middle of the inner side of the transition sleeve, a central shaft is installed in the middle of the filter screen through a bearing, one end of the central shaft is fixedly connected to an impact impeller, the other end of the central shaft is fixedly connected to a brush, the brush contacts the filter screen, the lower inner side of the transition sleeve is threadedly connected to a mounting ring, the middle of the mounting ring is fixedly connected to a cone tube, the cone tube penetrates the mounting ring, and the bottom of the mounting ring is fixedly connected to two knobs. When the oil in the return oil pipe enters the hollow cylinder, the filter screen in the filtering mechanism can be used to filter the oil returning to the oil storage tank, and the impact force of the oil circulation can be used to rotate the impact impeller, so that the brush coaxial with the impact impeller cleans the filter screen, and the iron filings on the inner wall of the pipeline cleaned can be received by the mounting ring.

[0014] Preferably, the opening and closing locking mechanism includes a locking pin slidably connected to the inside of the side wall of the transition sleeve, the locking pin is plugged into the side wall of the hollow tube, a second spring is arranged inside the side wall of the transition sleeve, one end of the second spring is fixedly connected to the locking pin, and the other end of the second spring is fixedly connected to the inner surface of the transition sleeve, and a pull rod is fixedly connected to the pin body of the locking pin, and the pull rod passes through the transition sleeve and is slidably connected to the transition sleeve. The restriction on the transition sleeve can be released by separating the locking pin from the hollow tube through the pull rod.

[0015] Preferably, a convex pin is rotatably connected to the side wall of the transition sleeve, a square rod is slidably connected to the inside of the convex pin, a connecting rod is fixedly connected to the end of the square rod, a limiting sleeve is fixedly connected to the other end of the connecting rod, and the limiting sleeve is slidably sleeved on the outside of the rod body of the pull rod, a spring 3 is arranged inside the convex pin, one end of the spring 3 is fixedly connected to the square rod, and the other end of the spring 3 is fixedly connected to the inner surface of the convex pin. By utilizing the reaction force of the spring 3, the limiting sleeve at the end of the connecting rod can be sleeved on the outside of the pull rod, so as to prevent the pull rod from being accidentally touched.

[0016] Preferably, the cleaning assembly comprises a fixed rod fixedly connected to the crankshaft shaft body, a sliding sleeve is slidably sleeved on the outer side of the rod body of the fixed rod, a scraper is fixedly connected to the end of the sliding sleeve, the scraper contacts the inner wall of the oil storage tank, a spring 4 is arranged on the inner side of the sliding sleeve, one end of the spring 4 is fixedly connected to the fixed rod, and the other end of the spring 4 is fixedly connected to the inner surface of the sliding sleeve. The cleaning assembly can not only stir the oil flowing back into the oil storage tank to accelerate its heat dissipation, but also clean the inner wall of the oil storage tank.

[0017] The beneficial effects of the present invention are as follows: the present invention relates to a transformer for a transformer substation in a high altitude area, which has the characteristics of good applicability of the oil circuit in high altitude areas and the ability to filter the oil circuit. In specific use, compared with the prior art, the present invention has the following beneficial effects:

[0018] Firstly, a hollow cylinder is added between the oil storage tank and the oil return pipe, a piston is arranged in the hollow cylinder, and a crankshaft driven by an electric motor is arranged in the oil storage tank, and the middle bending part of the crankshaft is connected to the piston by a common connecting arm. In this way, the piston can be repeatedly raised and lowered in the hollow cylinder by driving the crankshaft to rotate by the electric motor, thereby assisting the oil in the transformer body to be sucked into the oil storage tank. In this way, in the low temperature environment of high altitude areas, the oil in the transformer body can still circulate smoothly when it becomes thick due to the low temperature.

[0019] Secondly, a cooling impeller is arranged at one end of the crankshaft located outside the oil storage tank, and cooling fins are arranged on the outer wall of the oil storage tank. Thus, when the crankshaft rotates, the cooling impeller can be driven to rotate, thereby dissipating the heat of the oil storage tank. In this way, when the temperature is normal in high-altitude areas, the oil in the transformer body can be assisted to dissipate the heat. In addition, a cleaning component is arranged on the crankshaft. The cleaning component can not only stir the oil refluxed into the oil storage tank to accelerate its heat dissipation, but also clean the inner wall of the oil storage tank to prevent the inner wall of the oil storage tank from being attached with sludge.

[0020] Finally, by setting a transition sleeve that can be rotatably opened and closed in the middle of the hollow cylinder, a filtering mechanism is provided in the transition sleeve. The filter mesh in the filtering mechanism can be used to filter the oil that flows back into the oil storage tank, and the impact force during oil circulation can be used to rotate the impact impeller, so that the brush coaxial with the impact impeller can clean the filter mesh. The iron filings on the inner wall of the pipeline cleaned can be received by the mounting ring for easy cleaning later. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] For ease of explanation, the present invention is described in detail with reference to the following specific implementations and the accompanying drawings.

[0022] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0023] Figure 2 For the present invention Figure 1 Schematic diagram of the local structure;

[0024] Figure 3 For the present invention Figure 1 A side sectional view of an oil storage tank;

[0025] Figure 4 For the present invention Figure 3 A magnified view of the cleaning components;

[0026] Figure 5 For the present invention Figure 3 A magnified view of the local structure;

[0027] Figure 6 For the present invention Figure 5 A magnified view of the structure of part A;

[0028] Figure 7 For the present invention Figure 1 Front view of .

[0029] In the figure: 1. Transformer body; 2. Side support frame; 3. Support leg; 4. Oil storage tank; 5. Oil outlet pipe; 6. Heat dissipation fin; 7. Hollow cylinder; 8. Oil return pipe; 9. Transition sleeve; 901. Fixed pin; 10. Filter mechanism; 11. Opening and closing locking mechanism; 12. Motor; 13. Crankshaft; 14. Heat dissipation impeller; 15. Cleaning component; 16. Movable sleeve; 17. Connecting arm; 18. Piston; 19. Through hole; 20. Limit block; 21. Sliding rod; 22. Block; 23. Fixed frame ; 24. Spring one; 25. Fixed column; 26. Protective cover; 101. Filter; 102. Center axis; 103. Impact impeller; 104. Brush; 105. Mounting ring; 106. Conical tube; 107. Knob; 111. Locking pin; 112. Spring two; 113. Pull rod; 114. Embossed pin; 115. Square rod; 116. Connecting rod; 117. Limit sleeve; 118. Spring three; 151. Fixed rod; 152. Sliding sleeve; 153. Scraper strip; 154. Spring four. DETAILED DESCRIPTION

[0030] like Figure 1-7 As shown, this specific implementation adopts the following technical solutions:

[0031] Example:

[0032] A transformer for a substation in a high altitude area comprises a transformer body 1, two side support frames 2 are welded to the left side of the transformer body 1, and a support leg 3 is welded to the upper end of each side support frame 2, an oil storage tank 4 is welded to the top of the two support legs 3, a fixing column 25 is fixedly connected to the outer wall of the oil storage tank 4, a protective cover 26 is fixedly connected to the end of the fixing column 25, and the protective cover 26 is wrapped around the outer side of the oil storage tank 4. The setting of the protective cover 26 has a protective effect on the oil storage tank 4, and also facilitates the drainage of the heat dissipation impeller 14. The outer wall of the oil storage tank 4 is welded with a plurality of heat dissipation fins 6. The middle part of the oil storage tank 4 is fixedly connected with an oil outlet pipe 5, and the other end of the oil outlet pipe 5 is connected to the transformer body 1. The bottom of the oil storage tank 4 is fixedly connected with a hollow cylinder 7, and the hollow cylinder 7 is divided into two sections. The bottom of the hollow cylinder 7 is fixedly connected with an oil return pipe 8, and the end of the oil return pipe 8 is connected to the transformer body 1. The middle part of the hollow cylinder 7 is rotatably connected with a transition sleeve 9, and the upper and lower ends of the side of the transition sleeve 9 are fixedly connected with a fixing pin 901, and the fixing pin 901 is rotatably connected to the hollow cylinder 7. The setting of the fixing pin 901 facilitates the rotation of the transition sleeve 9 in the hollow cylinder 7.

[0033] Among them, an electric motor 12 is fixedly installed on the back of the oil storage tank 4, and the output shaft of the electric motor 12 passes through the oil storage tank 4 and is connected to the oil storage tank 4 through a sealed bearing. The end of the output shaft is fixedly connected to a crankshaft 13, and the crankshaft 13 passes through the oil storage tank 4 and is connected to the oil storage tank 4 through a sealed bearing. A heat dissipation impeller 14 is fixedly installed on one end of the crankshaft 13 located outside the oil storage tank 4, and a movable sleeve 16 is rotatably sleeved on the bent portion of the crankshaft 13. A connecting arm 17 is movably connected to the inside of the movable sleeve 16, and ball heads are arranged at both ends of the connecting arm 17. The other end of the connecting arm 17 is movably connected to a piston 18, and the piston 18 is slidably connected to the inner side of the hollow cylinder 7.

[0034] The piston 18 has a through hole 19 formed inside, and the through hole 19 penetrates the piston 18. The piston 18 is fixedly connected with a limit block 20 inside, and the bottom of the limit block 20 is fixedly connected with a slide bar 21, which penetrates the piston 18 and is slidably connected with the piston 18. The bottom of the slide bar 21 is fixedly connected with a baffle 22, and the baffle 22 contacts the piston 18. A spring 24 is sleeved on the outside of the rod body of the slide bar 21, one end of the spring 24 is fixedly connected with the limit block 20, and the other end of the spring 24 is fixedly connected to the inner surface of the piston 18. The bottom of the baffle 22 is fixedly connected with a fixing frame 23, and the end of the fixing frame 23 is fixedly connected to the inner wall of the hollow cylinder 7. The fixing frame 23 is provided to support and fix the baffle 22. When the piston 18 moves upward, it is separated from the baffle 22, so that the through hole 19 in the piston 18 is exposed, and the oil enters the top of the piston 18 through the through hole 19 and smoothly enters the oil storage tank 4. When the piston 18 moves downward, the piston 18 contacts the baffle 22 again, which can prevent the oil in the oil storage tank 4 from being pressed into the return oil pipe 8.

[0035] Among them, a filtering mechanism 10 is arranged on the inner side of the transition sleeve 9, and the filtering mechanism 10 includes a filter screen 101 fixedly connected to the middle part of the inner side of the transition sleeve 9, a central shaft 102 is installed in the middle of the filter screen 101 through a bearing, one end of the central shaft 102 is fixedly connected to an impact impeller 103, and the other end of the central shaft 102 is fixedly connected to a brush 104, and the brush 104 is in contact with the filter screen 101, and the lower part of the inner side of the transition sleeve 9 is connected to a mounting ring 105 through a thread, and the middle part of the mounting ring 105 is fixedly connected to a tapered tube 106, and the tapered tube 106 is arranged to penetrate the mounting ring 105, and the bottom of the mounting ring 105 is fixedly connected to two knobs 107. When the oil in the return oil pipe 8 enters the hollow cylinder 7, the filter screen 101 in the filtering mechanism 10 can be used to filter the oil returning to the oil storage tank 4, and the impact force of the oil circulation can be used to rotate the impact impeller 103, so that the brush 104 coaxial with the impact impeller 103 can clean the filter screen 101, and the iron filings on the inner wall of the pipeline cleaned can be received by the mounting ring 105.

[0036] Among them, the side of the transition sleeve 9 is provided with an opening and closing locking mechanism 11, which includes a locking pin 111 slidably connected to the inside of the side wall of the transition sleeve 9, the locking pin 111 is plugged with the side wall of the hollow cylinder 7, and a spring 2 112 is provided inside the side wall of the transition sleeve 9, one end of the spring 2 112 is fixedly connected to the locking pin 111, and the other end of the spring 2 112 is fixedly connected to the inner surface of the transition sleeve 9, and a pull rod 113 is fixedly connected to the pin body of the locking pin 111, and the pull rod 113 penetrates the transition sleeve 9 and is slidably connected to the transition sleeve 9. The restriction on the transition sleeve 9 can be released by disengaging the locking pin 111 from the hollow cylinder 7 through the pull rod 113.

[0037] Among them, a convex pin 114 is rotatably connected inside the side wall of the transition sleeve 9, a square rod 115 is slidably connected inside the convex pin 114, a connecting rod 116 is fixedly connected to the end of the square rod 115, the other end of the connecting rod 116 is fixedly connected to a limiting sleeve 117, and the limiting sleeve 117 is slidably sleeved on the outside of the rod body of the pull rod 113, and a spring 3 118 is arranged inside the convex pin 114, one end of the spring 3 118 is fixedly connected to the square rod 115, and the other end of the spring 3 118 is fixedly connected to the inner surface of the convex pin 114. By utilizing the reaction force of the spring 3 118, the limiting sleeve 117 at the end of the connecting rod 116 can be sleeved on the outside of the pull rod 113, so that the pull rod 113 can be prevented from being accidentally touched.

[0038] The crankshaft 13 is provided with a cleaning assembly 15, which includes a fixed rod 151 fixedly connected to the crankshaft 13, a sleeve 152 slidably sleeved on the outside of the rod body of the fixed rod 151, a scraper 153 fixedly connected to the end of the sleeve 152, the scraper 153 contacts the inner wall of the oil storage tank 4, a spring 154 is provided on the inner side of the sleeve 152, one end of the spring 154 is fixedly connected to the fixed rod 151, and the other end of the spring 154 is fixedly connected to the inner surface of the sleeve 152. The cleaning assembly 15 can not only stir the oil flowing back into the oil storage tank 4 to accelerate its heat dissipation, but also clean the inner wall of the oil storage tank 4.

[0039] The use state of the present invention is as follows: when in use, first, the oil in the oil storage tank 4 circulates normally in the transformer body 1 through the oil outlet pipe 5 and the oil return pipe 8, and at the same time, the motor 12 drives the crankshaft 13 to rotate, and the crankshaft 13 drives the movable sleeve 16 to rotate, and the movable sleeve 16 drives the piston 18 to repeatedly rise and fall in the hollow cylinder 7 through the connecting arm 17, thereby auxiliary suction of the oil in the transformer body 1 into the oil storage tank 4. In this way, in the low temperature environment of high altitude areas, the oil in the transformer body 1 becomes thick due to the low temperature. The oil in the oil tank 4 can be circulated smoothly. When the piston 18 moves upward, it is separated from the baffle 22, and the through hole 19 in the piston 18 is exposed. The oil enters the top of the piston 18 through the through hole 19 and smoothly enters the oil storage tank 4. When the piston 18 moves downward, the piston 18 contacts the baffle 22 again, which can prevent the oil in the oil storage tank 4 from being pressed into the oil return pipe 8. In addition, when the crankshaft 13 rotates, the heat dissipation impeller 14 can be driven to rotate, thereby dissipating the heat of the oil storage tank 4. When the temperature is normal in the altitude area, the oil in the transformer body 1 can be assisted to dissipate heat. In addition, a cleaning assembly 15 is arranged on the crankshaft 13. The cleaning assembly 15 can not only stir the oil returning to the oil storage tank 4 to accelerate its heat dissipation, but also clean the inner wall of the oil storage tank 4 to prevent the inner wall of the oil storage tank 4 from being attached with sludge. In addition, when the oil in the return oil pipe 8 enters the hollow cylinder 7, the filter screen 101 in the filter mechanism 10 can filter the oil returning to the oil storage tank 4, and By utilizing the impact force during oil circulation, the impact impeller 103 can be rotated, and then the brush 104 coaxial with the impact impeller 103 can clean the filter screen 101, and the iron filings on the inner wall of the pipe cleaned can be received by the mounting ring 105. At a later stage, the locking pin 111 can be separated from the hollow cylinder 7 by the pull rod 113 to release the restriction on the transition sleeve 9. Then the transition sleeve 9 is rotated by the fixing pin 901, and then the mounting ring 105 is unscrewed by the knob 107 for cleaning.

[0040] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A transformer for a substation in a high altitude area, comprising a transformer body (1), characterized in that: Two side support frames (2) are welded to the left side of the transformer body (1), and a support leg (3) is welded to the upper end of each side support frame (2). An oil storage tank (4) is welded to the top of the two support legs (3). A plurality of heat dissipation fins (6) are welded to the outer wall of the oil storage tank (4). An oil outlet pipe (5) is fixedly connected to the middle of the oil storage tank (4), and the other end of the oil outlet pipe (5) is connected to the transformer body (1). A hollow cylinder (7) is fixedly connected to the bottom of the oil storage tank (4), and an oil return pipe (8) is fixedly connected to the bottom of the hollow cylinder (7), and the end of the oil return pipe (8) is connected to the transformer body (1). A transition sleeve (9) is rotatably connected to the middle of the hollow cylinder (7), and a filtering mechanism (10) is provided on the inner side of the transition sleeve (9). An opening and closing locking mechanism (11) is provided on the side of the transition sleeve (9).

2. A transformer for a substation in a high altitude area according to claim 1, characterized in that: An electric motor (12) is fixedly mounted on the back of the oil storage tank (4); an output shaft of the electric motor (12) passes through the oil storage tank (4) and is connected to the oil storage tank (4) via a sealed bearing; a crankshaft (13) is fixedly connected to the end of the output shaft; the crankshaft (13) passes through the oil storage tank (4) and is connected to the oil storage tank (4) via a sealed bearing; a heat dissipation impeller (14) is fixedly mounted on one end of the crankshaft (13) located outside the oil storage tank (4); a cleaning assembly (15) is provided on the shaft body of the crankshaft (13); a movable sleeve (16) is rotatably sleeved on the bent portion of the crankshaft (13); a connecting arm (17) is movably connected to the inside of the movable sleeve (16); a piston (18) is movably connected to the other end of the connecting arm (17); and the piston (18) is slidably connected to the inner side of the hollow cylinder (7).

3. A transformer for a substation in a high altitude area according to claim 2, characterized in that: The piston (18) is provided with a through hole (19) inside, and the through hole (19) passes through the piston (18); the piston (18) is fixedly connected to a limit block (20) inside, and the bottom of the limit block (20) is fixedly connected to a slide rod (21), and the slide rod (21) passes through the piston (18) and is slidably connected to the piston (18); the bottom of the slide rod (21) is fixedly connected to a baffle (22), and the baffle (22) contacts the piston (18); a spring (24) is sleeved on the outer side of the rod body of the slide rod (21), one end of the spring (24) is fixedly connected to the limit block (20), and the other end of the spring (24) is fixedly connected to the inner surface of the piston (18).

4. A transformer for a substation in a high altitude area according to claim 3, characterized in that: The bottom of the baffle (22) is fixedly connected to a fixing frame (23), and the end of the fixing frame (23) is fixedly connected to the inner wall of the hollow cylinder (7).

5. The transformer for substation in high altitude area according to claim 1, characterized in that: The upper and lower ends of the side of the transition sleeve (9) are fixedly connected with fixing pins (901), and the fixing pins (901) are rotatably connected to the hollow cylinder (7).

6. The transformer for substation in high altitude area according to claim 1, characterized in that: A fixing column (25) is fixedly connected to the outer wall of the oil storage tank (4), and a protective cover (26) is fixedly connected to the end of the fixing column (25), and the protective cover (26) is wrapped around the outer side of the oil storage tank (4).

7. The transformer for substation in high altitude area according to claim 1, characterized in that: The filtering mechanism (10) comprises a filter screen (101) fixedly connected to the middle part of the inner side of the transition sleeve (9), a central shaft (102) being installed in the middle part of the filter screen (101) via a bearing, one end of the central shaft (102) being fixedly connected to an impact impeller (103), the other end of the central shaft (102) being fixedly connected to a brush (104), the brush (104) being in contact with the filter screen (101), a mounting ring (105) being threadedly connected to the lower part of the inner side of the transition sleeve (9), a cone tube (106) being fixedly connected to the middle part of the mounting ring (105), the cone tube (106) being arranged to penetrate the mounting ring (105), and two knobs (107) being fixedly connected to the bottom of the mounting ring (105).

8. The transformer for substation in high altitude area according to claim 1, characterized in that: The opening and closing locking mechanism (11) includes a locking pin (111) slidably connected to the inside of the side wall of the transition sleeve (9), the locking pin (111) is plugged into the side wall of the hollow cylinder (7), a spring 2 (112) is arranged inside the side wall of the transition sleeve (9), one end of the spring 2 (112) is fixedly connected to the locking pin (111), and the other end of the spring 2 (112) is fixedly connected to the inner surface of the transition sleeve (9), a pull rod (113) is fixedly connected to the pin body of the locking pin (111), and the pull rod (113) passes through the transition sleeve (9) and is slidably connected to the transition sleeve (9).

9. A transformer for a substation in a high altitude area according to claim 8, characterized in that: A convex pin (114) is rotatably connected to the side wall of the transition sleeve (9), and a square rod (115) is slidably connected to the inside of the convex pin (114). The end of the square rod (115) is fixedly connected to a connecting rod (116), and the other end of the connecting rod (116) is fixedly connected to a limiting sleeve (117), and the limiting sleeve (117) is slidably sleeved on the outside of the rod body of the pull rod (113). A spring three (118) is arranged inside the convex pin (114), one end of the spring three (118) is fixedly connected to the square rod (115), and the other end of the spring three (118) is fixedly connected to the inner surface of the convex pin (114).

10. The transformer for substation in high altitude area according to claim 2, characterized in that: The cleaning assembly (15) comprises a fixed rod (151) fixedly connected to the crankshaft (13) shaft body, a sliding sleeve (152) being slidably sleeved on the outer side of the rod body of the fixed rod (151), a scraper strip (153) being fixedly connected to the end of the sliding sleeve (152), the scraper strip (153) being in contact with the inner wall of the oil storage tank (4), a spring four (154) being arranged on the inner side of the sliding sleeve (152), one end of the spring four (154) being fixedly connected to the fixed rod (151), and the other end of the spring four (154) being fixedly connected to the inner surface of the sliding sleeve (152).

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