Oil type transformer convenient for maintenance

Abstract

The application relates to the field of oil type transformers, in particular to an oil type transformer convenient to maintain, which comprises a transformer, an opening and closing oil collecting mechanism, an automatic opening and closing gate, two pull-open mechanisms, a blocking mechanism and a height adjusting limiting mechanism. The oil type transformer is pushed to move the opening and closing oil collecting mechanism to be installed on the transformer, compared with a transmission mode, workers are avoided to open the automatic opening and closing gate, open the first liquid inlet pipe and the first sealing cover plate, and are avoided to remove the blocking of the second sliding groove, a large amount of time of the workers is saved, the workers do not need to climb up and down, the risk of the workers is reduced, the opening and closing oil collecting mechanism is pushed upward, a push rod pushes a triangular transmission block, a strip-shaped baffle is no longer blocked to a longitudinal heat dissipation shell, the strip-shaped baffle moves, drives a stop block to move, the stop block is no longer blocked to the clamping strip plate, and the first sealing cover plate is no longer locked.

Description

Technical Field

[0001] This invention relates to the field of oil-filled transformers, and more specifically to an oil-filled transformer that is easy to maintain. Background Technology

[0002] When repairing oil-fired transformers mounted on overhead structures, the transformer is often removed using equipment and returned to the factory for repair. This is because the repair process requires lifting equipment to suspend the top cover and the iron core fixed to it, which often wastes a lot of time. Even if the top cover and iron core are installed separately, the transformer still contains a large amount of transformer oil, which workers often need to clean and collect. However, since traditional transformers only have an opening at the top, it is often difficult to operate on the sides of the transformer for repairs. Even if the sides of the transformer are made detachable, the disassembled heat sink is difficult to place at such a height, and disassembling and installing the heat sink consumes a lot of time for workers. Cleaning the transformer oil also takes a lot of time, and this process requires workers to climb up and down, which is extremely dangerous. Summary of the Invention

[0003] The purpose of this invention is to provide an oil-type transformer that is easy to maintain.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] An easily maintainable oil-fired transformer is provided, comprising a transformer, an oil collection and dispensing mechanism, an automatic opening and closing gate, two opening mechanisms, a blocking mechanism, and a height adjustment limit mechanism. The two height adjustment limit mechanisms are fixedly installed at the bottom of the transformer. The oil collection and dispensing mechanism is detachably installed on the two height adjustment limit mechanisms. The two blocking mechanisms are fixedly installed on both sides of one side of the transformer and are drive-connected to the two blocking mechanisms. The two opening mechanisms are fixedly installed at the top of the transformer and are drive-connected to the two opening mechanisms. An outlet pipe is provided at the bottom of the transformer, and the automatic opening and closing gate covers the outlet pipe and is fixedly installed at the bottom of the transformer. The transformer includes a bottom shell, two longitudinal heat dissipation shells, a transverse heat dissipation shell, a clamping strip, and a top plate. The bottom shell is fixedly installed on a high-voltage power line frame. The two transverse heat dissipation shells are respectively fixedly installed on the top of the bottom shell on symmetrical sides. The top plate is fixedly installed on the top of the two transverse heat dissipation shells. The two longitudinal heat dissipation shells are slidably installed. On the other two sides of the top of the bottom shell, the top of the bottom shell is provided with a first locking strip for the longitudinal heat dissipation shell to be inserted. The bottom of the longitudinal heat dissipation shell is provided with a first sliding groove that cooperates with the first locking strip. Two locking strips are locked on the top of the respective longitudinal heat dissipation shells. The bottom of the locking strips is provided with a second locking strip and a third locking strip that engage with the longitudinal heat dissipation shell. The top of the longitudinal heat dissipation shell is provided with a second sliding groove that cooperates with the second locking strip and the third locking strip. The side of the locking strips is provided with a third sliding groove that engages with the top plate. The top of the two locking strips is fixedly provided with a connecting pipe for connection. The connecting pipe is drivenly connected to the two opening mechanisms. The top of the top plate is also provided with a first liquid inlet pipe. The connecting pipe is fixedly provided with a first sealing cover for covering the first liquid inlet pipe. The top plate is provided with two limiting strips for blocking the two locking strips respectively. The transverse heat dissipation shell away from the opening mechanism is fixedly provided with two first limiting plates for blocking the two second sliding grooves respectively. The liquid outlet pipe is fixedly provided on the bottom shell and communicates with the inside of the bottom shell.

[0006] Furthermore, each opening mechanism includes a first rotating seat, a transmission plate, an extension plate, a limit stop, a tension spring, and a connecting slide plate. The connecting pipe is fixedly installed on the top of the two clamping strips, and the connecting slide plate is fixedly installed on the connecting pipe. The connecting slide plate has a strip groove for the transmission plate to pass through. The transmission plate is inserted into the strip groove, and the top of the transmission plate is hinged to the first rotating seat. The first rotating seat is fixedly installed on the top of the top plate. The extension plate is fixedly installed on the top of the transmission plate, and the extension plate is fixedly installed on the extension plate. The extension plate is connected to the opening and closing oil collection mechanism. The limit stop is fixedly installed on the top of the top plate, and the top of the transmission plate abuts against the limit stop. One end of the tension spring is fixedly connected to the bottom of the extension plate, and the other end is fixedly connected to the top of the top plate.

[0007] Furthermore, each blocking mechanism includes a stop block, two strip baffles, a triangular transmission block, and an elastic pull-back mechanism. The two elastic pull-back mechanisms are fixedly installed on the transverse heat dissipation shell, and the two strip baffles are respectively fixedly installed on the two elastic pull-back mechanisms. One side of each strip baffle abuts against a longitudinal heat dissipation shell. The stop block is fixedly installed at the top of the top strip baffle and abuts against the end of the clamping strip. The two triangular transmission blocks are respectively fixedly installed on the two elastic pull-back mechanisms and are respectively connected to the opening and closing oil collection mechanism.

[0008] Furthermore, the elastic pull-back mechanism includes a first guide plate, a first mounting plate, two first guide posts, and a first abutting spring. The first guide plate is fixedly mounted on the transverse heat dissipation shell. One end of each of the two first guide posts passes through the first guide plate. The first guide plate has guide holes for the first guide posts to pass through. A strip baffle is fixedly mounted on one end of each of the two first guide posts. The first mounting plate is fixedly mounted on the other end of each of the two first guide posts. A triangular transmission block is fixedly mounted on the first mounting plate. The two first abutting springs are respectively sleeved on the two first guide posts. One end of each first abutting spring abuts against the strip baffle, and the other end abuts against the first guide plate.

[0009] Furthermore, the oil collection mechanism includes a collection tank, a filter box, a pump body, two push rods, a powerful magnetic ring, and a locking block. The two push rods are fixedly installed on the top of the collection tank, and the two powerful magnetic rings are also fixedly installed on the top of the collection tank. Two telescopic tubes are provided at the bottom of the bottom shell, and circular iron plates that can be inserted into the powerful magnetic rings are fixedly installed at the ends of the two telescopic tubes. The two locking blocks are fixedly installed on the top of the collection tank, and each locking block has a strip-shaped hole that engages with two height adjustment limit mechanisms. The pump body is fixedly installed on the top of the collection tank, and an outlet pipe is provided at the bottom of the collection tank. The inlet of the pump body is connected to the outlet pipe through a conduit. Several strip-shaped vent holes are provided on the top of the collection tank, and a second inlet pipe is provided on the top of the collection tank. The filter box is locked inside the second inlet pipe.

[0010] Furthermore, the height adjustment limit mechanism includes a fixed square tube, a sliding tube, and two first one-way clamping mechanisms. The fixed square tube is fixedly installed at the bottom of the base shell, and the sliding tube is inserted inside the fixed square tube. The outer edge of the clamping block is the same as the inner edge of the sliding tube. One first one-way clamping mechanism is fixedly installed on the sliding tube, and the second one-way clamping mechanism is fixedly installed on the fixed square tube. The sliding tube has a first through hole and a clamping hole for the end of the first one-way clamping mechanism to pass through. The fixed square tube has a second through hole for the end of the second one-way clamping mechanism to pass through. The sliding tube has a clamping hole for the second one-way clamping mechanism to clamp. Strip-shaped sliders are fixedly installed on both sides of the sliding tube. Two strip-shaped grooves are opened on both sides of the fixed square tube for the strip-shaped sliders to slide. The elastic force of the first one-way clamping mechanism is greater than the elastic force of the second one-way clamping mechanism.

[0011] Furthermore, the first one-way clamping mechanism includes an insert block, a guide seat, a second limiting plate, a handle, two second guide posts, and a second abutment spring. The guide seat is fixedly installed on the slide tube. One end of each of the two second guide posts passes through the guide seat, and the guide seat has guide holes for the second guide posts to pass through. The second limiting plate is fixedly installed on one end of each of the two second guide posts. The insert block is fixedly installed on the other end of each of the two second guide posts. The handle is fixedly installed on the second limiting plate. The two second abutment springs are respectively sleeved on the two second guide posts. One end of each second abutment spring abuts against the insert block, and the other end abuts against the guide seat. The bottom of the end of the insert block away from the handle is chamfered. The first one-way clamping mechanism and the second one-way clamping mechanism have the same structure. The elastic force of the second abutment spring is greater than the elastic force of the abutment spring on the second one-way clamping mechanism.

[0012] Furthermore, the automatic opening and closing gate includes two half-gates and a spring-loaded reset mechanism. The two half-gates are fixedly installed at the bottom, and the two spring-loaded reset mechanisms are respectively fixedly installed on the two half-gates. Each half-gate includes a second rotating seat, a rotating plate, a cover plate, a pull plate, two sliding bars, and a support guide plate. The two support guide plates are fixedly installed at the bottom of the bottom shell. The cover plate covers the liquid outlet pipe. The two sliding bars are respectively fixedly installed on both sides of the cover plate and are respectively locked onto the two support guide plates. Each support guide plate has a sliding groove for the sliding bar to slide. The pull plate is fixedly installed on the cover plate. The end of the rotating plate passes through the pull plate. The pull plate has a strip-shaped sliding hole for the rotating plate to slide. The rotating plate is rotatably installed on the second rotating seat, which is fixedly installed on the bottom shell. The spring-loaded reset mechanism is fixedly installed on the two support guide plates, and the end of the spring-loaded reset mechanism is fixedly connected to the cover plate.

[0013] Furthermore, each rebound reset mechanism includes a second guide plate, a third limiting plate, a second mounting plate, two third guide posts, and a third abutment spring. The second guide plate is fixedly mounted on two supporting guide plates. One end of each of the two third guide posts passes through the second guide plate. The second guide plate has guide holes for the third guide posts to pass through. The third limiting plate is fixedly mounted on one end of each of the two third guide posts. The second mounting plate is fixedly mounted on the other end of each of the two third guide posts. The two third abutment springs are respectively sleeved on the two third guide posts. One end of each third abutment spring abuts against the second mounting plate, and the other end abuts against the second guide plate.

[0014] The beneficial effects of this invention are:

[0015] This easy-to-maintain oil-type transformer uses a drive mechanism to move the oil collection mechanism, which is mounted on the transformer. Compared to a transmission method, this eliminates the need for workers to open the automatic gate, open the first inlet pipe and the first sealing cover, and remove obstructions to the second slide. This saves workers a lot of time, eliminates the need for them to climb up and down, and reduces their risk.

[0016] The upward movement of the oil collection mechanism achieves five effects: First, the push rod drives the triangular transmission block, preventing the strip baffle from obstructing the longitudinal heat dissipation shell. Second, the movement of the strip baffle causes the stop block to move, preventing it from obstructing the clamping strip and thus preventing the first sealing cover from being locked. Third, the push rod drives the opening mechanism, preventing the first sealing cover from closing on the first liquid inlet pipe, allowing gas to enter the transformer. Fourth, the filter box drives the automatic opening and closing gate, causing it to open automatically and allowing transformer oil to flow into the collection tank. Fifth, the automatic cooperation between the clamping block and the height adjustment limit mechanism ensures that the oil collection mechanism is installed on the transformer quickly and automatically.

[0017] Furthermore, by setting up blocking mechanisms on both sides, and since only one person can usually occupy the high-voltage frame, this method also serves as a theft prevention measure.

[0018] After the oil collection mechanism is installed, workers connect the oil outlet of the pump body to the first inlet pipe using a conduit. The pump body on the oil collection mechanism then operates, and the filter box cleans the transformer oil and the inside of the transformer. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments of the present invention will be briefly described below.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a three-dimensional exploded view of the transformer.

[0022] Figure 3 for Figure 2 A magnified view of part A;

[0023] Figure 4 This is a partial three-dimensional structural diagram of the present invention;

[0024] Figure 5 A three-dimensional structural diagram of the pulling mechanism;

[0025] Figure 6 A three-dimensional structural diagram of the pulling mechanism;

[0026] Figure 7 This is a three-dimensional structural diagram of the blocking mechanism;

[0027] Figure 8 This is a three-dimensional structural diagram of the blocking mechanism;

[0028] Figure 9A three-dimensional structural diagram of the opening and closing oil collection mechanism;

[0029] Figure 10 A three-dimensional structural diagram of the height adjustment limit mechanism;

[0030] Figure 11 An exploded view of the three-dimensional structure of the height adjustment limit mechanism;

[0031] Figure 12 This is a three-dimensional structural diagram of the first one-way clamping mechanism;

[0032] Figure 13 A three-dimensional structural diagram of an automatic opening and closing gate;

[0033] Figure 14 A partial three-dimensional structural diagram of an automatic opening and closing gate;

[0034] In the picture:

[0035] 1. Transformer; 1a. Bottom shell; 1a1. First retaining strip; 1a2. Liquid outlet pipe; 1b. Horizontal heat dissipation shell; 1c. Vertical heat dissipation shell; 1c1. First sliding groove; 1c2. Second sliding groove; 1d. Limiting strip; 1e. First limiting plate; 1h. Top plate; 1h1. Third sliding groove; 1h2. First liquid inlet pipe; 1i. Clamping strip plate; 1i1. Second retaining strip; 1i2. Third retaining strip; 1j. Connecting pipe; 1k. First sealing cover plate;

[0036] 2. Pulling mechanism; 2a. First rotating seat; 2b. Transmission plate; 2c. Extension plate; 2d. Limiting stop; 2f. Extension plate; 2h. Tension spring; 2j. Connecting slide plate;

[0037] 3. Blocking mechanism; 3a. Stop block; 3b. Strip baffle; 3c. Triangular transmission block; 3d. Elastic pull-back mechanism; 3d1. First guide plate; 3d2. First guide post; 3d3. First contact spring; 3d4. First mounting plate;

[0038] 4. Opening and closing oil collection mechanism; 4a. Push rod; 4b. Collection box; 4b1. Second inlet pipe; 4c. Filter box; 4d. Pump body; 4e. Locking block; 4f. Strong magnetic ring; 4j. Telescopic pipe;

[0039] 5. Height adjustment limit mechanism; 5a. Fixed square tube; 5a2. Strip groove; 5a1. Second through hole; 5b. Sliding tube; 5b2. Strip slider; 5b3. First through hole; 5b4. Locking hole; 5c. First one-way locking mechanism; 5c1. Insert block; 5c2. Guide seat; 5c3. Second guide post; 5c4. Second contact spring; 5c5. Second limit plate; 5c6. Handle; 5d. Second one-way locking mechanism;

[0040] 6. Automatic opening and closing gate; 6a. Second rotating seat; 6b. Rotating plate; 6c. Cover plate; 6d. Sliding bar; 6e. Supporting guide plate; 6f. Pulling plate; 6h. Rebound reset mechanism; 6h1. Second guide plate; 6h2. Third guide post; 6h3. Third limit plate; 6h4. Second mounting plate; 6h5. Third contact spring. Detailed Implementation

[0041] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0042] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product.

[0043] Reference Figures 1 to 14 The oil-type transformer shown is easy to maintain and includes a transformer 1, an oil collection and opening mechanism 4, an automatic opening and closing gate 6, two opening mechanisms 2, a blocking mechanism 3, and a height adjustment limit mechanism 5. The two height adjustment limit mechanisms 5 are fixedly installed at the bottom of the transformer 1. The oil collection and opening mechanism 4 is detachably installed on the two height adjustment limit mechanisms 5. The two blocking mechanisms 3 are fixedly installed on both sides of one side of the transformer 1 and are connected to the two blocking mechanisms 3. The two opening mechanisms 2 are fixedly installed at the top of the transformer 1 and are connected to the two opening mechanisms 2. An outlet pipe 1a2 is provided at the bottom of the transformer 1. The automatic opening and closing gate 6 covers the outlet pipe 1a2 and is fixedly installed at the bottom of the transformer 1.

[0044] The transformer 1 includes a bottom shell 1a, two longitudinal heat dissipation shells 1c, a transverse heat dissipation shell 1b, clamping strips 1i, and a top plate 1h. The bottom shell 1a is fixedly mounted on a high-voltage power line frame. The two transverse heat dissipation shells 1b are respectively fixedly mounted on the top of the bottom shell 1a on both symmetrical sides. The top plate 1h is fixedly mounted on the top of the two transverse heat dissipation shells 1b. The two longitudinal heat dissipation shells 1c are slidably mounted on the other two sides of the top of the bottom shell 1a. The top of the bottom shell 1a is provided with a first clamping strip 1a1 for the longitudinal heat dissipation shells 1c to be inserted. The bottom of the longitudinal heat dissipation shells 1c is provided with a first sliding groove 1c1 that cooperates with the first clamping strip 1a1. The two clamping strips 1i are clamped on the top of the respective longitudinal heat dissipation shells 1c. The bottom of the clamping strips 1i is provided with a second clamping strip 1i2 and a third clamping strip 1i2 that engage with the longitudinal heat dissipation shells 1c. The top of the plate is provided with a second sliding groove 1c2 that cooperates with the second locking strip 1i1 and the third locking strip 1i2. The side of the locking strip 1i is provided with a third sliding groove 1h1 that engages with the top plate 1h. The top of the two locking strips 1i is fixedly provided with a connecting pipe 1j for connection. The connecting pipe 1j is connected to the two opening mechanisms 2. The top of the top plate 1h is also provided with a first liquid inlet pipe 1h2. The connecting pipe 1j is fixedly provided with a first sealing cover plate 1k for covering the first liquid inlet pipe 1h2. The top plate 1h is provided with two limiting strips 1d for blocking the two locking strips 1i respectively. The transverse heat dissipation shell 1b away from the opening mechanism 2 is fixedly provided with two first limiting plates 1e for blocking the two second sliding grooves 1c2 respectively. The liquid outlet pipe 1a2 is fixedly provided on the bottom shell 1a and is connected to the inside of the bottom shell 1a.

[0045] Each opening mechanism 2 includes a first rotating seat 2a, a transmission plate 2b, an extension plate 2c, a limiting stop 2d, an extension plate 2f, a tension spring 2h, and a connecting slide plate 2j. The connecting pipe 1j is fixedly installed on the top of the two clamping strips 1i, and the connecting slide plate 2j is fixedly installed on the connecting pipe 1j. The connecting slide plate 2j has a strip groove for the transmission plate 2b to pass through. The transmission plate 2b is inserted into the strip groove, and the top of the transmission plate 2b is hinged to the first rotating seat 2a. The first rotating seat 2a is fixedly installed on the top of the top plate 1h. The extension plate 2c is fixedly installed on the top of the transmission plate 2b, and the extension plate 2f is fixedly installed on the extension plate 2c. The extension plate 2f is connected to the opening and closing oil collection mechanism 4. The limiting stop 2d is fixedly installed on the top of the top plate 1h, and the top of the transmission plate 2b abuts against the limiting stop 2d. One end of the tension spring 2h is fixedly connected to the bottom of the extension plate 2c, and the other end of the tension spring 2h is fixedly connected to the top of the top plate 1h. When the oil collection mechanism 4 is pushed upward, it will push the extension plate 2f upward, causing the extension plate 2f to move, which in turn drives the extension plate 2c to move. The extension plate 2c then drives the transmission plate 2b to rotate, causing the transmission plate 2b to push the connecting slide plate 2j to move. The connecting slide plate 2j will then pull the connecting pipe 1j to move, causing the first sealing cover plate 1k to no longer cover the first inlet pipe 1h2. This allows air to enter the transformer 1, releasing the vacuum environment inside the transformer 1. The transformer oil inside the transformer 1 can then flow into the housing of the oil collection mechanism 4. If the first inlet pipe 1h2 is not opened, the transformer oil inside the transformer 1 will have difficulty flowing out, and the connecting pipe... While 1j is moving, it will also drive the two clamping plates 1i to move, so that the clamping plates 1i are misaligned with the top plate 1h. This is to remind the worker that the first sealing cover 1k and the first liquid inlet pipe 1h2 have been separated. Since the worker is usually below the bottom shell 1a, he cannot see the situation between the first liquid inlet pipe 1h2 and the first sealing cover 1k. The clamping plates 1i also guide the movement of the connecting pipe 1j. At the beginning, the clamping plate 1i is blocked by the blocking mechanism 3 to prevent the first sealing cover 1k from being opened. Therefore, the clamping plates 1i also have the function of locking the first sealing cover 1k to prevent the first sealing cover 1k from separating from the first liquid inlet pipe 1h2.

[0046] On the other hand, the transmission plate 2b pulls the connecting slide plate 2j to move, causing the first liquid inlet pipe 1h2 to open. If the opening and closing oil collection mechanism 4 descends, the tension spring 2h pulls the extension plate 2c to reset and rotate, causing the transmission plate 2b to rotate. However, due to the presence of the strip groove on the connecting slide plate 2j, the transmission plate 2b cannot push the connecting slide plate 2j to move. Only the worker can push the connecting pipe 1j to reset, so that the first sealing cover plate 1k covers the first liquid inlet pipe 1h2. This opening can be automatic, while closing requires manual assistance, allowing the worker to evacuate the inside of the transformer 1 through the first liquid inlet pipe 1h2 and then add transformer oil through the first liquid inlet pipe 1h2. During the evacuation and addition of transformer oil, due to the descent of the opening and closing oil collection mechanism 4, the automatic opening and closing gate 6 can also automatically close, so that the transformer 1 only has one opening, the first liquid inlet pipe 1h2.

[0047] Of course, it is also conceivable that the oil collection mechanism 4 does not descend. The transformer oil is added along the first inlet pipe 1h2 by using the pump body on the oil collection mechanism 4, so that the transformer oil can be discharged from the outlet pipe 1a2. The transformer oil is continuously filtered through the filter screen in the oil collection mechanism 4 to purify the inside of the transformer. In addition, the inside of the transformer can be cleaned during the oil filling and discharging process, making the inside of the transformer cleaner.

[0048] Therefore, the oil collection mechanism 4 here serves four purposes: First, it automatically opens the first inlet pipe 1h2, avoiding the need for workers to open it and reducing the danger of workers working at heights. Second, when the oil collection mechanism 4 is removed, the first inlet pipe 1h2 will not automatically close, making it convenient for workers to perform vacuuming and refueling. Third, after the oil collection mechanism 4 is installed, the pump on the oil collection mechanism 4 can clean the transformer oil and the inside of the transformer. Fourth, the connecting pipe 1j drives the clamping strip 1i to move, allowing workers to see the separation between the first inlet pipe 1h2 and the first sealing cover 1k from below the transformer.

[0049] Each blocking mechanism 3 includes a stop block 3a, two strip baffles 3b, a triangular transmission block 3c, and an elastic pull-back mechanism 3d. The two elastic pull-back mechanisms 3d are fixedly installed on the transverse heat dissipation shell 1b. The two strip baffles 3b are respectively fixedly installed on the two elastic pull-back mechanisms 3d. One side of each strip baffle 3b abuts against a longitudinal heat dissipation shell 1c. The stop block 3a is fixedly installed at the top of the top strip baffle 3b and abuts against the end of the clamping strip 1i. The two triangular transmission blocks 3c are respectively fixedly installed on the two elastic pull-back mechanisms 3d and are respectively connected to the opening and closing oil collection mechanism 4. When the oil collection mechanism 4 is pushed upward, it will push the triangular transmission block 3c upward, causing the triangular transmission block 3c to push the elastic pull-back mechanism 3d to move. In turn, the elastic pull-back mechanism 3d will pull the strip baffle 3b to move. When the push rod 4a passes through one triangular transmission block 3c, it will push one triangular transmission block 3c, so that one strip baffle 3b will no longer block the longitudinal heat sink 1c. When the push rod 4a pushes through all the triangular transmission blocks 3c, all the triangular transmission blocks 3c will move, so that all the strip baffles 3b will no longer block the longitudinal heat sink 1c, allowing the worker to push the longitudinal heat sink 1c to slide, thus allowing the worker to repair the transformer inside the bottom shell 1a.

[0050] When the topmost strip baffle 3b is pushed, it will drive the stop block 3a to move, so that the stop block 3a no longer blocks the clamping strip 1i, allowing the clamping strip 1i to be driven by the connecting pipe 1j.

[0051] The elastic pull-back mechanism 3d includes a first guide plate 3d1, a first mounting plate 3d4, two first guide posts 3d2, and a first abutting spring 3d3. The first guide plate 3d1 is fixedly mounted on the transverse heat dissipation shell 1b. One end of each of the two first guide posts 3d2 passes through the first guide plate 3d1. The first guide plate 3d1 has guide holes for the first guide posts 3d2 to pass through. A strip baffle 3b is fixedly mounted on one end of each of the two first guide posts 3d2. The first mounting plate 3d4 is fixedly mounted on the other end of each of the two first guide posts 3d2. A triangular transmission block 3c is fixedly mounted on the first mounting plate 3d4. The two first abutting springs 3d3 are respectively sleeved on the two first guide posts 3d2. One end of each first abutting spring 3d3 abuts against the strip baffle 3b, and the other end abuts against the first guide plate 3d1. When the triangular transmission block 3c is pushed, the triangular transmission block 3c will drive the first mounting plate 3d4 to move, so that the first mounting plate 3d4 pulls the first guide post 3d2 to move, and the first guide post 3d2 will pull the strip baffle 3b to move, so that the strip baffle 3b no longer blocks the longitudinal heat sink 1c.

[0052] The oil collection mechanism 4 includes a collection tank 4b, a filter box 4c, a pump body 4d, two push rods 4a, a powerful magnetic ring 4f, and a locking block 4e. The two push rods 4a are fixedly installed on the top of the collection tank 4b, and the two powerful magnetic rings 4f are fixedly installed on the top of the collection tank 4b. The bottom of the bottom shell 1a is provided with two telescopic tubes 4j. The ends of the two telescopic tubes 4j are fixedly provided with circular iron plates that can be inserted into the powerful magnetic rings 4f. The two locking blocks 4e are fixedly installed on the top of the collection tank 4b. The two locking blocks 4e are provided with strip-shaped holes that can be engaged with the two height adjustment limit mechanisms 5 respectively. The pump body 4d is fixedly installed on the top of the collection tank 4b. The bottom of the collection tank 4b is provided with a liquid outlet pipe. The liquid inlet of the pump body 4d is connected to the liquid outlet pipe through a conduit. The top of the collection tank 4b is provided with several strip-shaped vent holes. The top of the collection tank 4b is provided with a second liquid inlet pipe 4b1, and the filter box 4c is locked in the second liquid inlet pipe 4b1. When the opening and closing oil collecting mechanism 4 needs to be installed on the transformer 1, the worker first inserts the end of the telescopic tube 4j into the strong magnetic ring 4f, and makes the circular iron plate at the end of the telescopic tube 4j attract the strong magnetic ring 4f. After attraction, when the opening and closing oil collecting mechanism 4 is pushed upward, the telescopic tube 4j plays a guiding role, so that the push rod 4a can push the triangular transmission block 3c and the extension plate 2f to move in sequence, so that the first sealing cover 1k is no longer tightly covered on the first liquid inlet pipe 1h2, allowing air to enter the transformer 1.

[0053] Furthermore, during the process of the collection box 4b rising, the card block 4e will be inserted into the height adjustment limit mechanism 5, so that the card block 4e will not separate from the height adjustment limit mechanism 5, thereby realizing the fixed installation of the opening and closing oil collection mechanism 4 on the transformer 1.

[0054] Furthermore, during the process of the collection box 4b rising, the filter box 4c will also push the automatic opening and closing gate 6 to move, so that the automatic opening and closing gate 6 will open automatically. Also, because air enters the transformer 1, the transformer oil in the transformer 1 can flow into the collection box 4b through the filter box 4c. The hydraulic oil can also be filtered through the filter box 4c.

[0055] Therefore, by pushing the oil collection mechanism 4 upward, four effects are achieved: First, the push rod 4a pushes the triangular transmission block 3c, so that the strip baffle 3b no longer blocks the longitudinal heat dissipation shell 1c; second, the strip baffle 3b moves, driving the stop block 3a to move, so that the stop block 3a no longer blocks the clamping strip 1i, so that the first sealing cover 1k is no longer locked; third, the push rod 4a pushes the opening mechanism 2 to move, so that the first sealing cover 1k no longer covers the first liquid inlet pipe 1h2, allowing gas to enter the transformer 1; fourth, the filter box 4c drives the automatic opening and closing gate 6 to move, so that the automatic opening and closing gate 6 opens automatically, allowing the transformer oil in the transformer 1 to flow into the collection box 4b; fifth, the automatic cooperation between the locking block 4e and the height adjustment limit mechanism 5 allows the oil collection mechanism 4 to be installed on the transformer 1, which not only has a fast installation speed but also achieves automatic fixation.

[0056] By driving the oil collection mechanism 4 to move, the oil collection mechanism 4 is installed on the transformer 1. Compared with the transmission method, this avoids the need for workers to open the automatic opening and closing gate 6, open the first liquid inlet pipe 1h2 and the first sealing cover 1k, and also avoids the need to remove the obstruction of the second slide 1c2. This saves workers a lot of time, eliminates the need for workers to climb up and down, and reduces the risk to workers.

[0057] The height adjustment limit mechanism 5 includes a fixed square tube 5a, a sliding tube 5b, and two first one-way clamping mechanisms 5c. The fixed square tube 5a is fixedly installed at the bottom of the base shell 1a. The sliding tube 5b is inserted into the fixed square tube 5a. The outer edge of the clamping block 4e is the same as the inner edge of the sliding tube 5b. One first one-way clamping mechanism 5c is fixedly installed on the sliding tube 5b, and a second one-way clamping mechanism 5d is fixedly installed on the fixed square tube 5a. The sliding tube 5b has a first opening through which the end of the first one-way clamping mechanism 5c passes. The fixed square tube 5a has a second through hole 5a1 for the end of the second one-way clamping mechanism 5d to pass through, and the sliding tube 5b has a 5b4 for the second one-way clamping mechanism 5d to clamp. The two sides of the sliding tube 5b are respectively fixed with strip sliders 5b2. The two sides of the fixed square tube 5a have two strip grooves 5a2 for the strip sliders 5b2 to slide. The elastic force of the first one-way clamping mechanism 5c is greater than the elastic force of the second one-way clamping mechanism 5d. By pushing the oil collection mechanism 4 upwards, the end of the locking block 4e will be inserted into the slide tube 5b, causing the first one-way locking mechanism 5c to block the end of the locking block 4e. As the locking block 4e moves the slide tube 5b upwards, the slide tube 5b moves the strip slider 5b2 within the strip groove 5a2. Since the locking block 4e continues to be pushed upwards, the elastic force of the first one-way locking mechanism 5c is greater than the elastic force of the second one-way locking mechanism 5d. In other words, the blocking force of the first one-way locking mechanism 5c on the locking block 4e is greater than the blocking force of the second one-way locking mechanism 5d. Due to the blocking force of the slide tube 5b, the slide tube 5b first pushes open the second one-way clamping mechanism 5d, so that the end of the second one-way clamping mechanism 5d is inserted into 5b4. When the second one-way clamping mechanism 5d is inserted into 5b4, the strip slider 5b2 just contacts the top of the strip groove 5a2, so that the slide tube 5b will no longer move. Since the oil collection mechanism 4 is still being pushed open, the first one-way clamping mechanism 5c will be inserted into the strip hole of the clamping block 4e, thereby realizing the fixed installation of the oil collection mechanism 4 on the transformer 1, so that the oil collection mechanism 4 will not descend.

[0058] When it is necessary to close the automatic opening and closing gate 6, add transformer oil to the transformer 1 and evacuate, the worker pulls the second one-way clamping mechanism 5d, which causes the slide tube 5b to slide on the strip groove 5a2, thereby causing the opening and closing oil collecting mechanism 4 to drop as a whole. The bottom of the strip slider 5b2 contacts the bottom of the strip groove 5a2, thereby closing the automatic opening and closing gate 6.

[0059] When the oil collection mechanism 4 needs to be removed from the transformer 1, the worker only needs to pull the first one-way clamping mechanism 5c to disengage the first one-way clamping mechanism 5c from the clamping block 4e.

[0060] The first one-way clamping mechanism 5c includes an insert block 5c1, a guide seat 5c2, a second limiting plate 5c5, a handle 5c6, two second guide posts 5c3, and a second abutment spring 5c4. The guide seat 5c2 is fixedly mounted on the slide tube 5b. One end of each of the two second guide posts 5c3 passes through the guide seat 5c2. The guide seat 5c2 has guide holes for the second guide posts 5c3 to pass through. The second limiting plate 5c5 is fixedly mounted on one end of each of the two second guide posts 5c3. The insert block 5c1 is fixedly mounted on the other end of each of the two second guide posts 5c3. At one end, the handle 5c6 is fixedly mounted on the second limiting plate 5c5. Two second abutment springs 5c4 are respectively sleeved on the two second guide posts 5c3. One end of each second abutment spring 5c4 abuts against the insert block 5c1, and the other end abuts against the guide seat 5c2. The bottom of the end of the insert block 5c1 away from the handle 5c6 is chamfered. The first one-way clamping mechanism 5c and the second one-way clamping mechanism 5d have the same structure. The elastic force of the second abutment spring 5c4 is greater than the elastic force of the abutment spring on the second one-way clamping mechanism 5d. When the worker pulls the handle 5c6, the handle 5c6 pulls the second limiting plate 5c5 to move. The second limiting plate 5c5 drives the insert block 5c1 to move through the second guide post 5c3. This causes the insert block 5c1 to compress the second abutment spring 5c4, causing the insert block 5c1 to be pulled out from the locking block 4e.

[0061] When the locking block 4e moves upward, the locking block 4e will contact the inclined surface of the insert block 5c1, causing the locking block 4e to push the inclined surface of the insert block 5c1 to contact, causing the insert block 5c1 to push the second abutment spring 5c4 to be compressed.

[0062] The automatic opening and closing gate 6 includes two half-gates and a spring-loaded reset mechanism 6h. The two half-gates are fixedly installed at the bottom of 1a, and the two spring-loaded reset mechanisms 6h are respectively fixedly installed on the two half-gates. Each half-gate includes a second rotating seat 6a, a rotating plate 6b, a cover plate 6c, a pull plate 6f, two sliding bars 6d, and a support guide plate 6e. The two support guide plates 6e are fixedly installed at the bottom of the bottom shell 1a. The cover plate 6c covers the liquid outlet pipe 1a2, and the two sliding bars 6d are respectively fixedly installed on both sides of the cover plate 6c. The strip 6d is respectively mounted on two support guide plates 6e. Each support guide plate 6e has a groove for the sliding strip 6d to slide. The pull plate 6f is fixedly installed on the cover plate 6c. The end of the rotating plate 6b passes through the pull plate 6f. The pull plate 6f has a strip-shaped sliding hole for the rotating plate 6b to slide. The rotating plate 6b is rotatably mounted on the second rotating seat 6a. The second rotating seat 6a is fixedly installed on the bottom shell 1a. The spring-back reset mechanism 6h is fixedly installed on the two support guide plates 6e. The end of the spring-back reset mechanism 6h is fixedly connected to the cover plate 6c. When the filter box 4c is pushed upward, it pushes the rotating plate 6b upward, causing the rotating plate 6b to rotate along the hinge of the second rotating seat 6a. This causes the rotating plate 6b to push the pull plate 6f to move, which in turn causes the pull plate 6f to pull the cover plate 6c to move. Consequently, the cover plate 6c pulls the slide bar 6d to slide on the support guide plate 6e, so that the cover plate 6c no longer abuts against the bottom of the outlet pipe 1a2, allowing the transformer oil to flow out from the outlet pipe 1a2. While the cover plate 6c is moving, it drives the spring-back reset mechanism 6h to move, causing the spring-back reset mechanism 6h to store energy. When the filter box 4c descends, since the filter box 4c no longer obstructs the rotating plate 6b, the spring-back reset mechanism 6h will pull the cover plate 6c back to reset, causing the cover plate 6c to close again on the outlet pipe 1a2.

[0063] Each rebound reset mechanism 6h includes a second guide plate 6h1, a third limiting plate 6h3, a second mounting plate 6h4, two third guide posts 6h2, and a third abutment spring 6h5. The second guide plate 6h1 is fixedly mounted on two supporting guide plates 6e. One end of each of the two third guide posts 6h2 passes through the second guide plate 6h1. The second guide plate 6h1 has guide holes for the third guide posts 6h2 to pass through. The third limiting plate 6h3 is fixedly mounted on one end of each of the two third guide posts 6h2. The second mounting plate 6h4 is fixedly mounted on the other end of each of the two third guide posts 6h2. The two third abutment springs 6h5 are respectively sleeved on the two third guide posts 6h2. One end of each third abutment spring 6h5 abuts against the second mounting plate 6h4, and the other end abuts against the second guide plate 6h1. When the filter box 4c descends, since the filter box 4c no longer blocks the rotating plate 6b, the third contact spring 6h5 will push the second mounting plate 6h4 to move, so that the second mounting plate 6h4 drives the cover plate 6c to move, so that the cover plate 6c covers the liquid outlet pipe 1a2. At this time, the third limiting plate 6h3 will be in contact with the second guide plate 6h1.

[0064] Working principle: When the opening and closing oil collecting mechanism 4 needs to be installed on the transformer 1, the worker first inserts the end of the telescopic tube 4j into the strong magnetic ring 4f, so that the circular iron plate at the end of the telescopic tube 4j is attracted to the strong magnetic ring 4f. After the attraction, when the opening and closing oil collecting mechanism 4 is pushed upward, the telescopic tube 4j plays a guiding role. As the push rod 4a moves upward, the push rod 4a can push the triangular transmission block 3c and the extension plate 2f to move in sequence.

[0065] During the movement of push rod 4a pushing triangular transmission block 3c: When push rod 4a pushes upward, it pushes triangular transmission block 3c upward, causing triangular transmission block 3c to push elastic return mechanism 3d to move. This elastic return mechanism 3d then pulls strip baffle 3b to move. As push rod 4a passes one triangular transmission block 3c, that triangular transmission block 3c is pushed, causing strip baffle 3b to no longer obstruct the longitudinal heat sink 1c. When push rod 4a pushes past all triangular transmission blocks 3c... This will cause all the triangular transmission blocks 3c to move, thereby causing all the strip baffles 3b to no longer obstruct the longitudinal heat sink 1c, allowing the worker to push the longitudinal heat sink 1c to slide, thereby allowing the worker to repair the transformer inside the bottom shell 1a. When the top strip baffle 3b is pushed, the top strip baffle 3b will drive the stop block 3a to move, so that the stop block 3a no longer obstructs the clamping strip 1i, allowing the clamping strip 1i to be driven by the connecting pipe 1j.

[0066] During the process of push rod 4a pushing extension plate 2f: when push rod 4a pushes upward, push rod 4a will push extension plate 2f upward to move, so that extension plate 2f drives extension plate 2c to move, extension plate 2c drives transmission plate 2b to rotate, so that transmission plate 2b pushes connecting slide plate 2j to move, connecting slide plate 2j will pull connecting pipe 1j to move, so that the first sealing cover plate 1k is no longer covering the first liquid inlet pipe 1h2, thereby allowing air to enter the transformer 1, the vacuum environment inside the transformer 1 is released, and the transformer oil in the transformer 1 can flow into the housing of the opening and closing oil collecting mechanism 4;

[0067] Furthermore, during the process of the collection box 4b rising, the card block 4e will be inserted into the height adjustment limit mechanism 5, so that the card block 4e will not separate from the height adjustment limit mechanism 5, thereby realizing the fixed installation of the opening and closing oil collection mechanism 4 on the transformer 1.

[0068] The process of inserting the locking block 4e into the height adjustment limit mechanism 5 is as follows: The worker pushes the oil collection mechanism 4 upwards, causing the end of the locking block 4e to insert into the slide tube 5b. This causes the first one-way locking mechanism 5c to block the end of the locking block 4e. As the locking block 4e moves the slide tube 5b upwards, the slide tube 5b moves the strip slider 5b2 within the strip groove 5a2. Because the locking block 4e continues to be pushed upwards, the elastic force of the first one-way locking mechanism 5c is greater than the elastic force of the second one-way locking mechanism 5d. In other words, the blocking force of the first one-way locking mechanism 5c on the locking block 4e is greater than that of the second one-way locking mechanism 5d. The second one-way clamping mechanism 5d blocks the slide tube 5b. Therefore, the slide tube 5b first pushes the second one-way clamping mechanism 5d open, so that the end of the second one-way clamping mechanism 5d is inserted into 5b4. When the second one-way clamping mechanism 5d is inserted into 5b4, the strip slider 5b2 just contacts the top of the strip groove 5a2, so that the slide tube 5b will no longer move. Since the oil collection mechanism 4 is still being pushed open, the first one-way clamping mechanism 5c will be inserted into the strip hole of the clamping block 4e, thereby realizing the fixed installation of the oil collection mechanism 4 on the transformer 1, so that the oil collection mechanism 4 will not descend.

[0069] Furthermore, during the process of the collection box 4b rising, the filter box 4c will also push the automatic opening and closing gate 6 to move, so that the automatic opening and closing gate 6 will open automatically. Also, because air enters the transformer 1, the transformer oil in the transformer 1 can flow into the collection box 4b through the filter box 4c. The hydraulic oil can also be filtered through the filter box 4c.

[0070] The process of filter box 4c pushing the automatic opening and closing gate 6 is as follows: When filter box 4c is pushed upward, filter box 4c will push rotating plate 6b upward, so that rotating plate 6b rotates along the hinge of second rotating seat 6a, so that rotating plate 6b pushes pull plate 6f to move, so that pull plate 6f pulls cover plate 6c to move, so that cover plate 6c pulls slide bar 6d to slide on support guide plate 6e, so that cover plate 6c no longer abuts against the bottom of liquid outlet pipe 1a2, so that transformer oil can flow out from liquid outlet pipe 1a2. When cover plate 6c moves, cover plate 6c will drive spring-back reset mechanism 6h to move, so that spring-back reset mechanism 6h stores power.

[0071] When the workers have completed the maintenance, it is necessary to refill the transformer oil into the transformer;

[0072] First, the automatic opening and closing gate 6 needs to be closed. The worker pulls the second one-way clamping mechanism 5d, which causes the slide tube 5b to slide on the strip groove 5a2, thereby causing the opening and closing oil collection mechanism 4 to drop as a whole. The bottom of the strip slider 5b2 contacts the bottom of the strip groove 5a2, thus closing the automatic opening and closing gate 6.

[0073] The transformer 1 is then evacuated using a vacuum pump. The oil outlet of the pump body 4d is connected to the first inlet pipe 1h2 via a conduit. The pump body 4d is then started to draw the hydraulic oil in the collection tank 4b back into the transformer 1. After the oil is drawn back, the connecting pipe 1j is pulled to close the first sealing cover 1k onto the first inlet pipe 1h2. The oil is then removed from the transformer 1 by pulling the two first one-way clamping mechanisms 5c. The maintenance of the equipment is then completed.

Claims

1. An oil type transformer which is convenient for maintenance, characterized by comprising: The utility model relates to a transformer (1), open and close oil collecting mechanism (4), automatic open and close gate (6), two pull open mechanism (2), blocking mechanism (3) and height limiting mechanism (5), two height limiting mechanism (5) fixed mounting at the bottom of transformer (1), open and close oil collecting mechanism (4) detachable installation is in two height limiting mechanism (5), two blocking mechanism (3) fixed mounting on the one side of transformer (1) two sides, open and close oil collecting mechanism (4) with two blocking mechanism (3) transmission connection, two pull open mechanism (2) fixed mounting at the top of transformer (1), and open and close oil collecting mechanism (4) with two pull open mechanism (2) transmission connection, the bottom of transformer (1) is provided with liquid outlet pipe (1a2), automatic open and close gate (6) covers in liquid outlet pipe (1a2), and automatic open and close gate (6) fixed mounting at the bottom of transformer (1); Transformer (1) includes bottom shell (1a), two longitudinal heat dissipation shell (1c), transverse heat dissipation shell (1b), clamping batten (1i) and top plate (1h), bottom shell (1a) is fixedly installed on high voltage wire frame, two transverse heat dissipation shell (1b) are fixedly installed on the top of bottom shell (1a) two sides symmetry each other, top plate (1h) is fixedly installed on the top of two transverse heat dissipation shell (1b), two longitudinal heat dissipation shell (1c) can slide respectively installation is in the top of bottom shell (1a) other two sides, the top of bottom shell (1a) is provided with the first clamping strip (1a1) for the card of longitudinal heat dissipation shell (1c), the bottom of longitudinal heat dissipation shell (1c) is provided with the first sliding slot (1c1) with the first clamping strip (1a1) cooperation, two clamping battens (1i) are set up in the top of longitudinal heat dissipation shell (1c) respectively, the bottom of clamping batten (1i) is provided with the second clamping strip (1i1) and third clamping strip (1i2) with longitudinal heat dissipation shell (1c) clamping, the top of longitudinal heat dissipation shell (1c) is provided with the second sliding slot (1c2) with the second clamping strip (1i1) and third clamping strip (1i2) cooperation, the side of clamping batten (1i) is provided with the third sliding slot (1h1) with top plate (1h) clamping, the top of two clamping battens (1i) is fixedly provided with the connecting pipe (1j) for connecting, the connecting pipe (1j) is transmission connection with two pull open mechanism (2), the top of top plate (1h) is also provided with the first liquid inlet pipe (1h2), the first sealing cover plate (1k) for covering the first liquid inlet pipe (1h2) is fixedly arranged on the connecting pipe (1j), top plate (1h) is provided with two limit strips (1d) for blocking two clamping battens (1i) respectively, the first limit plate (1e) for blocking two second sliding slots (1c2) respectively is fixedly arranged on the transverse heat dissipation shell (1b) away from pull open mechanism (2), liquid outlet pipe (1a2) is fixedly arranged on bottom shell (1a), and liquid outlet pipe (1a2) is communicated with the inside of bottom shell (1a).

2. An oil-filled transformer according to claim 1, characterized in that Each pull-open mechanism (2) comprises a first rotating seat (2a), a transmission plate (2b), an extension plate (2c), a limiting stopper (2d), an extension plate (2f), a pull spring (2h) and a connecting slide plate (2j), the connecting pipe (1j) is fixedly installed on the top of the two clamping strip plates (1i), the connecting slide plate (2j) is fixedly installed on the connecting pipe (1j), the connecting slide plate (2j) is provided with a strip-shaped sliding slot for the transmission plate (2b) to pass through, the transmission plate (2b) is inserted into the strip-shaped sliding slot, the top of the transmission plate (2b) is hingedly connected with the first rotating seat (2a), the first rotating seat (2a) is fixedly installed on the top end of the top plate (1h), the extension plate (2c) is fixedly installed on the top end of the transmission plate (2b), the extension plate (2f) is fixedly installed on the extension plate (2c), the extension plate (2f) is in transmission connection with the opening and closing oil collecting mechanism (4), the limiting stopper (2d) is fixedly installed on the top of the top plate (1h), the top of the transmission plate (2b) abuts against the limiting stopper (2d), one end of the pull spring (2h) is fixedly connected with the bottom of the extension plate (2c), and the other end of the pull spring (2h) is fixedly connected with the top of the top plate (1h).

3. An oil-filled transformer according to claim 2, characterized in that Each blocking mechanism (3) comprises a stopper (3a), two strip-shaped stop plates (3b), a triangular transmission block (3c) and an elastic return mechanism (3d), the two elastic return mechanisms (3d) are fixedly installed on the horizontal heat dissipation shell (1b), the two strip-shaped stop plates (3b) are respectively fixedly installed on the two elastic return mechanisms (3d), one side of each strip-shaped stop plate (3b) abuts against one longitudinal heat dissipation shell (1c), the stopper (3a) is fixedly installed on the top end of the topmost strip-shaped stop plate (3b) and abuts against the end of the clamping strip plate (1i), the two triangular transmission blocks (3c) are respectively fixedly installed on the two elastic return mechanisms (3d) and are respectively in transmission connection with the opening and closing oil collecting mechanism (4).

4. An oil-filled transformer according to claim 3, characterized in that The elastic return mechanism (3d) comprises a first guide plate (3d1), a first mounting plate (3d4), two first guide columns (3d2) and a first abutting spring (3d3), the first guide plate (3d1) is fixedly installed on the horizontal heat dissipation shell (1b), one end of the two first guide columns (3d2) penetrates through the first guide plate (3d1), the first guide plate (3d1) is provided with guide holes for the first guide columns (3d2) to penetrate through, the strip-shaped stop plate (3b) is fixedly installed on one end of the two first guide columns (3d2), the first mounting plate (3d4) is fixedly installed on the other end of the two first guide columns (3d2), the triangular transmission block (3c) is fixedly installed on the first mounting plate (3d4), the two first abutting springs (3d3) are respectively sleeved on the two first guide columns (3d2), one end of each first abutting spring (3d3) abuts against the strip-shaped stop plate (3b) and the other end abuts against the first guide plate (3d1).

5. An oil-filled transformer according to claim 3, wherein The opening and closing collecting mechanism (4) comprises a collecting box (4b), a filter box (4c), a pump body (4d), two push rods (4a), two strong magnetic rings (4f), two clamping blocks (4e) and the strong magnetic rings (4f), the two push rods (4a) are fixedly installed at the top of the collecting box (4b), the two strong magnetic rings (4f) are fixedly installed at the top of the collecting box (4b), the bottom of the bottom shell (1a) is provided with two telescopic pipes (4j), the ends of the two telescopic pipes (4j) are fixedly provided with circular iron plates capable of being inserted into the strong magnetic rings (4f), the two clamping blocks (4e) are fixedly installed at the top of the collecting box (4b), strip-shaped holes capable of being clamped with the two height adjusting limiting mechanisms (5) are formed in the two clamping blocks (4e), the pump body (4d) is fixedly installed at the top of the collecting box (4b), the bottom of the collecting box (4b) is provided with a liquid outlet pipe, the liquid inlet of the pump body (4d) is connected with the liquid outlet pipe through a pipeline, a plurality of strip-shaped air holes are formed in the top of the collecting box (4b), and the top of the collecting box (4b) is provided with a second liquid inlet pipe (4b1); the filter box (4c) is clamped in the second liquid inlet pipe (4b1).

6. An oil-filled transformer according to claim 5, characterized in that The height adjusting limiting mechanism (5) comprises a fixed square tube (5a), a sliding pipe (5b) and two first one-way clamping mechanisms (5c), the fixed square tube (5a) is fixedly installed at the bottom of the bottom shell (1a), the sliding pipe (5b) is inserted into the fixed square tube (5a), the outer edge of the clamping block (4e) is the same as the inner edge of the sliding pipe (5b), one first one-way clamping mechanism (5c) is fixedly installed on the sliding pipe (5b), a second one-way clamping mechanism (5d) is fixedly installed on the fixed square tube (5a), the sliding pipe (5b) is provided with a first perforation (5b3) and a clamping hole (5b4) for the end of the first one-way clamping mechanism (5c) to pass through, the fixed square tube (5a) is provided with a second perforation (5a1) for the end of the second one-way clamping mechanism (5d) to pass through, the sliding pipe (5b) is provided with 5b4 for the second one-way clamping mechanism (5d) to clamp, and the two sides of the sliding pipe (5b) are fixedly provided with strip-shaped sliding blocks (5b2); the two sides of the fixed square tube (5a) are provided with two strip-shaped sliding grooves (5a2) for the strip-shaped sliding blocks (5b2) to slide, respectively, the elastic force of the first one-way clamping mechanism (5c) is greater than that of the second one-way clamping mechanism (5d).

7. An oil-filled transformer according to claim 6, characterized in that The first one-way clamping mechanism (5c) comprises an insertion block (5c1), a guide base (5c2), a second limiting plate (5c5), a handle (5c6), two second guide columns (5c3) and second contact springs (5c4). The guide base (5c2) is fixedly installed on the sliding pipe (5b). The two second guide columns (5c3) pass through the guide base (5c2) at one end. The guide base (5c2) is provided with guide holes for the second guide columns (5c3) to pass through. The second limiting plate (5c5) is fixedly installed on one end of the two second guide columns (5c3). The insertion block (5c1) is fixedly installed on the other end of the two second guide columns (5c3). The handle (5c6) is fixedly installed on the second limiting plate (5c5). The two second contact springs (5c4) are respectively sleeved on the two second guide columns (5c3). One end of each second contact spring (5c4) is in contact with the insertion block (5c1), and the other end is in contact with the guide base (5c2). The bottom of the end of the insertion block (5c1) away from the handle (5c6) is inversely beveled. The first one-way clamping mechanism (5c) is the same in structure as the second one-way clamping mechanism (5d). The elastic force of the second contact spring (5c4) is greater than that of the contact spring of the second one-way clamping mechanism (5d).

8. An oil-filled transformer according to claim 6, wherein The automatic opening and closing gate (6) comprises two half gates and rebound reset mechanisms (6h). The two half gates are fixedly installed at the bottom of the 1a. The two rebound reset mechanisms (6h) are respectively fixedly installed on the two half gates. Each half gate comprises a second rotating seat (6a), a rotating plate (6b), a cover plate (6c), a pull plate (6f), two sliding strips (6d) and a supporting guide plate (6e). The two supporting guide plates (6e) are fixedly installed at the bottom of the bottom shell (1a). The cover plate (6c) covers the liquid outlet pipe (1a2). The two sliding strips (6d) are respectively fixedly installed on the two sides of the cover plate (6c). The two sliding strips (6d) are respectively clamped on the two supporting guide plates (6e). A sliding groove is formed in each supporting guide plate (6e) for the sliding strip (6d) to slide. The pull plate (6f) is fixedly installed on the cover plate (6c). The end of the rotating plate (6b) passes through the pull plate (6f). A strip-shaped sliding hole is formed in the pull plate (6f) for the rotating plate (6b) to slide. The rotating plate (6b) is rotatably installed on the second rotating seat (6a). The second rotating seat (6a) is fixedly installed on the bottom shell (1a). The rebound reset mechanism (6h) is fixedly installed on the two supporting guide plates (6e). The end of the rebound reset mechanism (6h) is fixedly connected with the cover plate (6c).

9. An oil-filled transformer according to claim 8, characterized in that Each rebound reset mechanism (6h) comprises a second guide plate (6h1), a third limiting plate (6h3), a second mounting plate (6h4), two third guide columns (6h2) and a third abutting spring (6h5), the second guide plate (6h1) is fixedly installed on the two support guide plates (6e), one end of the two third guide columns (6h2) penetrates through the second guide plate (6h1), a guide hole for the third guide column (6h2) to penetrate through is formed in the second guide plate (6h1), the third limiting plate (6h3) is fixedly installed on one end of the two third guide columns (6h2), the second mounting plate (6h4) is fixedly installed on the other end of the two third guide columns (6h2), the two third abutting springs (6h5) are respectively sleeved on the two third guide columns (6h2), one end of each third abutting spring (6h5) abuts against the second mounting plate (6h4), and the other end abuts against the second guide plate (6h1).

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