Pressure relief device of transformer

Abstract

The utility model relates to the technical field of pressure relief devices, and discloses a pressure relief device of a transformer, which comprises a pressure relief chamber, a liquid inlet pipeline is arranged on the pressure relief chamber, a filter box capable of filtering is arranged at the bottom of the pressure relief chamber, and the pressure relief chamber is connected with the filter box through a liquid conveying pipeline. A drainage pipeline is arranged on the bottom wall surface of the filter box, connecting through grooves are formed in the left and right wall surfaces of the filter box, and storage boxes are fixedly mounted at the positions, corresponding to the connecting through grooves, of the left and right wall surfaces of the filter box. In the use process, the pressure release chamber is connected with the liquid storage tank of the transformer through the liquid inlet pipeline, the filter tank is connected with the liquid storage tank of the transformer through the liquid discharge pipeline, when the pressure of the transformer is increased, liquid in the liquid storage tank can be discharged into the pressure release chamber for pressure relief, the liquid can enter the filter tank, and the pressure is reduced. And the liquid firstly falls onto the outer wall of the filter belt, and the filter belt can filter the liquid, so that the service life of the filter belt can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure relief devices, in particular to a pressure relief device for a transformer. Background Art

[0002] The search for the publication (announcement) number: CN205751769U discloses a pressure relief device for an oil-immersed transformer, which is located at the top of the transformer oil tank and includes a gas relay, a pressure release chamber and a pressure release valve. A gas pipe extending into the oil tank is provided at the top of the oil tank at the bottom of the gas relay, and a guide oil pipe extending into the oil tank is provided at the top of the oil tank at the bottom of the pressure release chamber. The vertical length of the guide oil pipe extending into the oil tank is greater than the vertical length of the gas pipe extending into the oil tank. Protecting the transformer with a pressure relief device can not only realize all the functions of the gas comprehensive protector in the prior art, but also realize the originally integrated functions separately, solve the joint adverse effects between the functions, and add a pressure release chamber to achieve the function of autonomous breathing of the transformer oil tank. It has a reasonable structure and strong practicality.

[0003] The existing transformer pressure relief device, when in use, can only temporarily store the liquid inside the transformer liquid storage tank to reduce the internal pressure, but cannot filter the liquid inside the storage tank. The used liquid will form impurities inside the storage tank, which will be detrimental to the normal and stable operation of the transformer.

[0004] Therefore, we propose a pressure relief device for a transformer. Utility Model Content

[0005] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a pressure relief device for a transformer.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a pressure relief device of a transformer, comprising a pressure release chamber, a liquid inlet pipe is arranged on the pressure release chamber, a filter box for filtering is arranged at the bottom of the pressure release chamber, the pressure release chamber and the filter box are connected by a liquid infusion pipe, a liquid discharge pipe is arranged on the bottom wall of the filter box, connecting grooves are arranged on the left and right walls of the filter box, storage boxes are fixedly installed at the positions corresponding to the connecting grooves on the left and right walls of the filter box, installation grooves are arranged on the walls close to each other of the two storage boxes, and the two installation grooves correspond to the two connecting grooves, a filter belt is arranged inside the pressure release chamber, the filter belts are adapted to the two installation grooves and the two connecting grooves, the left and right ends of the filter belt are movable through the inside of the same side installation groove and the connecting groove, the inside of the two groups of storage boxes are arranged with transmission rollers, the two transmission rollers are connected by the filter belt, a driving mechanism for rotating the two installation grooves is arranged on the two installation grooves, and the outer wall of the filter belt is provided with through holes for filtering, and the through holes are evenly distributed.

[0007] Preferably, the driving mechanism includes a protective shell, which is fixedly mounted on the front wall of the left storage box, a driving motor for transmission is fixedly mounted on the front wall of the protective shell, the output end of the driving motor moves through the front wall of the protective shell, and a transmission rotating rod is fixedly mounted on the front wall of the left transmission roller.

[0008] Preferably, a cleaning roller in a horizontal state is rotatably installed inside the storage box on the left side, and the outer wall of the cleaning roller is provided with bristles, which are in friction contact with the lower outer wall of the filter belt.

[0009] Preferably, a transmission shaft is fixedly mounted on the front wall of the cleaning roller, and the outer walls of the transmission shaft and the transmission rod are rotatably mounted on the front wall of the left storage box in a sealed manner.

[0010] Preferably, transmission gears capable of transmitting power are fixedly mounted on the outer walls of the transmission shaft and the transmission rod, the two transmission gears are meshed and connected together, and the output end of the drive motor is transmission-connected to the transmission rod.

[0011] Preferably, the bottoms of the two storage boxes are both detachably fixed with storage boxes, and the two storage boxes and the two storage boxes can be detachably connected by snap-fit ​​connection.

[0012] Beneficial Effects

[0013] The utility model provides a transformer pressure relief device, which has the following beneficial effects:

[0014] (1) A pressure relief device for a transformer. During use, the utility model connects the pressure release chamber to the liquid storage tank of the transformer through a liquid inlet pipe, and connects the filter box and the liquid storage tank of the transformer through a liquid discharge pipe. When the pressure of the transformer increases, the liquid in the liquid storage tank can be discharged into the pressure release chamber to relieve the pressure. The liquid will enter the filter box and first fall on the outer wall of the filter belt. The filter belt will filter the liquid, which can extend its service life and improve the working stability of the transformer. In addition, the filter belt can be rotated by the driving mechanism, and the impurities on it can be discharged from the pressure release chamber to facilitate chip removal.

[0015] (2) A pressure relief device for a transformer. During use, the utility model can start the driving motor, and the output end of the driving motor rotates with the transmission rod, so that the left transmission roller starts to rotate. With the cooperation of the two transmission rollers, the filter belt starts to rotate. At the same time, through the two transmission gears, the transmission shaft starts to rotate synchronously with the cleaning roller in the opposite direction. The bristles on the cleaning roller will clean the outer wall of the filter belt, reducing the risk of clogging of the filter belt. In addition, impurities will fall into the interior of the storage box and be stored in a centralized manner, which is convenient for subsequent processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of the utility model as a whole;

[0017] Figure 2 It is a three-dimensional diagram of the filter box of the utility model;

[0018] Figure 3 It is a cutaway perspective view of the storage box of the utility model;

[0019] Figure 4 for Figure 3 A magnified view of location A.

[0020] Legend: 1. Pressure release chamber; 2. Filter box; 3. Connecting slot; 4. Storage box; 5. Filter belt; 6. Mounting slot; 7. Transmission rod; 8. Cleaning roller; 9. Transmission shaft; 10. Transmission gear; 12. Storage box; 14. Transmission roller; 15. Protective casing; 16. Drive motor. DETAILED DESCRIPTION

[0021] Embodiment 1: A pressure relief device for a transformer, such as Figure 1-4 As shown, it includes a pressure release chamber 1, on which a liquid inlet pipe is arranged, a filter box 2 for filtering is arranged at the bottom of the pressure release chamber 1, the pressure release chamber 1 and the filter box 2 are connected by a liquid infusion pipe, a liquid discharge pipe is arranged on the bottom wall of the filter box 2, the left and right walls of the filter box 2 are provided with connecting grooves 3, storage boxes 4 are fixedly installed at the positions of the left and right walls of the filter box 2 corresponding to the connecting grooves 3, the walls adjacent to the two storage boxes 4 are provided with mounting grooves 6, the two mounting grooves 6 correspond to the two connecting grooves 3, a filter belt 5 is arranged inside the pressure release chamber 1, the filter belt 5 is adapted to the two mounting grooves 6 and the two connecting grooves 3, the left and right ends of the filter belt 5 are movable through the mounting grooves 6 and the connecting grooves 3 on the same side, the interiors of the two groups of storage boxes 4 are provided with transmission rollers 14, the two transmission rollers 14 are connected by the filter belt 5, the two mounting grooves 6 are provided with a driving mechanism for rotating them, the outer wall of the filter belt 5 is provided with through holes for filtering, and the through holes are evenly distributed.

[0022] During use of the utility model, the pressure release chamber 1 is connected to the liquid storage tank of the transformer through a liquid inlet pipe, and the filter box 2 is connected to the liquid storage tank of the transformer through a liquid discharge pipe. When the pressure of the transformer increases, the liquid inside the liquid storage tank can be discharged into the pressure release chamber 1 to relieve the pressure. The liquid will enter the filter box 2 and first fall on the outer wall of the filter belt 5. The filter belt 5 will filter the liquid, which can extend its service life and improve the working stability of the transformer. In addition, the filter belt 5 can be rotated by the driving mechanism, and the impurities on it can be discharged from the interior of the pressure release chamber 1.

[0023] Embodiment 2: Based on Embodiment 1, Figure 1 , Figure 3 and Figure 4 As shown, the driving mechanism includes a protective shell 15, which is fixedly mounted on the front wall of the left storage box 4. A driving motor 16 for transmission is fixedly mounted on the front wall of the protective shell 15. The output end of the driving motor 16 movably passes through the front wall of the protective shell 15, and a driving rod 7 is fixedly mounted on the front wall of the left driving roller 14.

[0024] A cleaning roller 8 in a horizontal state is rotatably installed inside the left storage box 4 , and the outer wall of the cleaning roller 8 is provided with bristles, which are in friction contact with the lower outer wall of the filter belt 5 .

[0025] A transmission shaft 9 is fixedly mounted on the front wall of the cleaning roller 8. The transmission shaft 9 and the outer wall of the transmission rod 7 are both rotatably mounted on the front wall of the left storage box 4 in a sealed manner.

[0026] Transmission gears 10 for transmission are fixedly mounted on the outer walls of the transmission shaft 9 and the transmission rod 7 . The two transmission gears 10 are meshed and connected together, and the output end of the drive motor 16 is transmission-connected to the transmission rod 7 .

[0027] The bottom of the two storage boxes 4 is fixedly mounted with storage boxes 12 in a detachable manner, and the detachable manner of the two storage boxes 4 and the two storage boxes 12 can be a snap-on connection.

[0028] During use of the utility model, the drive motor 16 can be turned on, and the output end of the drive motor 16 rotates with the transmission rotating rod 7, so that the left transmission roller 14 starts to rotate, and with the cooperation of the two transmission rollers 14, the filter belt 5 starts to rotate, and at the same time, through the two transmission gears 10, the transmission shaft 9 starts to rotate synchronously in the opposite direction with the cleaning roller 8. The bristles on the cleaning roller 8 will clean the outer wall of the filter belt 5, reducing the risk of clogging of the filter belt 5. In addition, impurities will fall into the interior of the storage box 12 for centralized storage.

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A pressure relief device for a transformer, comprising a pressure relief chamber (1), wherein a liquid inlet pipe is arranged on the pressure relief chamber (1), and wherein: The bottom of the pressure release chamber (1) is provided with a filter box (2) capable of filtering. The pressure release chamber (1) and the filter box (2) are connected via a liquid infusion pipeline. A liquid discharge pipeline is provided on the bottom wall of the filter box (2). The left and right walls of the filter box (2) are provided with connecting grooves (3). Storage boxes (4) are fixedly installed at positions on the left and right walls of the filter box (2) corresponding to the connecting grooves (3). The adjacent walls of the two storage boxes (4) are provided with installation grooves (6). The two installation grooves (6) correspond to the two connecting grooves (3). A filter belt (5) is arranged inside the discharge chamber (1), and the filter belt (5) is matched with two mounting slots (6) and two connecting slots (3). The left and right ends of the filter belt (5) are movable through the inside of the mounting slot (6) and the connecting slot (3) on the same side. A transmission roller (14) is arranged inside the two groups of storage boxes (4), and the two transmission rollers (14) are connected through the filter belt (5). A driving mechanism for rotating the two mounting slots (6) is arranged on the outer wall of the filter belt (5). Through holes for filtering are opened, and the through holes are evenly distributed.

2. The transformer pressure relief device according to claim 1, characterized in that: The driving mechanism comprises a protective shell (15), the protective shell (15) is fixedly mounted on the front side wall of the left storage box (4), a driving motor (16) capable of transmission is fixedly mounted on the front side wall of the protective shell (15), an output end of the driving motor (16) movably penetrates the front side wall of the protective shell (15), and a driving rotating rod (7) is fixedly mounted on the front side wall of the left driving roller (14).

3. The transformer pressure relief device according to claim 1, characterized in that: A cleaning roller (8) in a horizontal state is rotatably installed inside the storage box (4) on the left side, and the outer wall of the cleaning roller (8) is provided with bristles, which are in frictional contact with the lower outer wall of the filter belt (5).

4. The transformer pressure relief device according to claim 3, characterized in that: A transmission shaft (9) is fixedly mounted on the front wall of the cleaning roller (8), and the outer wall of the transmission shaft (9) and the transmission rod (7) are both rotatably mounted on the front wall of the left storage box (4) in a sealed manner.

5. The transformer pressure relief device according to claim 4, characterized in that: The outer walls of the transmission shaft (9) and the transmission rod (7) are both fixedly mounted with transmission gears (10) capable of transmitting, the two transmission gears (10) are meshed and connected together, and the output end of the drive motor (16) is transmission-connected to the transmission rod (7).

6. The transformer pressure relief device according to claim 1, characterized in that: The bottoms of the two storage boxes (4) are both fixedly mounted with storage boxes (12) in a detachable manner, and the detachable manner of the two storage boxes (4) and the two storage boxes (12) can be a snap-on connection.

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