An explosion-proof and fire-resistant device for oil-immersed transformers with easy-to-replace rupture discs.

Abstract

This utility model discloses an explosion-proof and fire-resistant device for oil-immersed transformers that facilitates the replacement of rupture discs. This utility model relates to the field of transformer explosion-proof and fire-resistant technology, and includes a device body, movable components, and connecting components. The movable components are installed on the outer surface of the device body, and the connecting components are installed on the top of the device body. The movable components include an explosion-proof disc, a movable arc plate A, a movable arc plate B, a connecting column, a slot box, a buckle, a threaded rod, and a sealing sleeve. One end of both movable arc plates A and B is movably connected to the outer surface of the connecting column. The advantage of this utility model is that by placing the explosion-proof disc inside the sealing sleeve and then wrapping the movable arc plates A and B around the outside of the explosion-proof tube, the threaded rod, fixing slot, and buckle effectively fixes the explosion-proof disc to the top of the explosion-proof tube, increasing the convenience of installing and removing the explosion-proof disc.

Description

Technical Field

[0001] This utility model relates to the field of transformer explosion-proof and fire-proof technology, specifically to an oil-immersed transformer explosion-proof and fire-proof device that facilitates the replacement of rupture discs. Background Technology

[0002] The main functions of the explosion-proof and fire-proof device for oil-immersed transformers that facilitates the replacement of rupture discs include preventing the transformer from exploding under overvoltage conditions and effectively preventing the spread and reignition of fire by extinguishing and cooling the fire with nitrogen. The device prevents the transformer from exploding under overvoltage conditions by setting an explosion-proof membrane, and can extinguish the fire immediately after the device is activated, reduce the pressure inside the transformer cavity, and prevent the oil tank from exploding or deforming.

[0003] The applicant discovered through a search that a Chinese patent, "Explosion-proof and Fireproof Device for Oil-immersed Transformers with Easy-to-Replace Rupture Discs," with publication (announcement) number "CN211555615U," discloses a device that uses a first clamping tube and a second clamping tube. When installing the rupture disc, the first clamping tube is inserted along the limiting rod, pushed towards the pressure reducing chamber, and the pin is inserted into the placement hole. During this process, the end of the first clamping tube is fitted onto the end surface of the oil inlet pipe of the pressure reducing chamber. The spring is compressed, causing the movable ring to press tightly against the end of the oil inlet pipe. The sealing gasket and sealing ring ensure that the first clamping tube... The tube is sealed to the pressure reducing chamber. At the same time, the deformation space of the spring allows the protruding ring block at the end of the second clamping tube to be inserted into the fixed tube. Under the push of the spring force, the sealing gasket on the surface of the protruding ring block is tightly attached to the end surface of the fixed tube. At this time, simply tightening the nut will fix the second clamping tube and the fixed tube together. The installation is simple, the sealing performance is good, and it is convenient for staff to carry out regular maintenance, which helps to improve the service life of the device and effectively avoids accidents. However, the above documents neglect the convenience of installing and removing the explosion-proof disc. Therefore, we propose an oil-immersed transformer explosion-proof and fireproof device that facilitates the replacement of the explosion-proof disc. Utility Model Content

[0004] The purpose of this invention is to provide an explosion-proof and fire-proof device for oil-immersed transformers that facilitates the replacement of rupture discs.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an explosion-proof and fire-resistant device for an oil-immersed transformer that facilitates the replacement of rupture discs, comprising a device body, movable components, and connecting components. The movable components are installed on the outer surface of the device body, and the connecting components are installed on the top of the device body. The movable components include an explosion-proof disc, an A movable arc plate, a B movable arc plate, a connecting column, a slot box, a buckle, a threaded rod, and a sealing sleeve. The outer surface of the explosion-proof disc is movably connected to the inner wall of the sealing sleeve. One end of both the A and B movable arc plates is movably connected to the outer surface of the connecting column. The back of the slot box is fixedly connected to the other end of the A movable arc plate. The back of the buckle is fixedly connected to the other end of the B movable arc plate. The front of both the slot box and the buckle has threaded holes suitable for the threaded rod. The outer surface of the threaded rod is threadedly connected to the inner wall of the threaded hole. The outer surface of the sealing sleeve is fixedly connected to the inner wall of the A movable arc plate.

[0006] As a further embodiment of this utility model: the equipment body includes a tank, an observation window, a connecting pipe, an explosion-proof pipe, a connecting block A, and a connecting block B. One side of the observation window is fixedly connected to the outer surface of the tank, one end of the connecting pipe extends into the interior of the tank, the bottom of the explosion-proof pipe is fixedly connected to the top of the tank, and the bottoms of the connecting blocks A and B are both fixedly connected to the top of the tank.

[0007] As a further embodiment of this utility model: the connecting assembly includes an A limiting block, a B limiting block, a forward L-rod, a reverse L-rod, and a movable column. The outer surfaces of the A limiting block and the B limiting block are each provided with a movable groove suitable for the movable column. One end of the movable column is movably connected to the inner wall of the movable groove of the A limiting block, and the other end is movably connected to the inner wall of the movable groove of the B limiting block. The top of the forward L-rod is fixedly connected to the bottom of the A limiting block, and the top of the reverse L-rod is fixedly connected to the bottom of the B limiting block.

[0008] As a further embodiment of this utility model: the inner walls of both the A movable arc plate and the B movable arc plate are movably connected to the outer surface of the explosion-proof pipe.

[0009] As a further embodiment of this utility model: the bottom of the explosion-proof sheet is movably connected to the top of the explosion-proof tube, and the bottom of the sealing sleeve is in contact with the top of the explosion-proof tube.

[0010] As a further embodiment of this utility model: a square hole suitable for the forward L-rod is provided on the left side of the A connecting block, and the outer surface of the forward L-rod is movably connected to the inner wall of the square hole.

[0011] As a further embodiment of this utility model: the front of the B connecting block is provided with a hole suitable for the reverse L rod, and the outer surface of the reverse L rod is movably connected to the inner wall of the hole.

[0012] Compared with the prior art, the beneficial effects of this utility model by adopting the above technical solution are as follows:

[0013] 1. This utility model places the explosion-proof sheet inside the sealing sleeve, and then wraps the A movable arc plate and B movable arc plate around the outside of the explosion-proof pipe. At this time, the explosion-proof sheet is fixed to the top of the explosion-proof pipe by the threaded rod fixing groove and buckle, which increases the convenience of installing and disassembling the explosion-proof sheet to a certain extent.

[0014] 2. This utility model adjusts the A and B limit blocks to suitable positions by moving the movable column, then places the forward L rod inside the A connecting block, and at the same time places the reverse L rod inside the B connecting block, thus achieving a certain degree of connection with the lifting equipment and increasing the convenience of moving the tank to a suitable position.

[0015] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0016] Figure 1 This is an overall schematic diagram of an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the device body in an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the active components in an embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of the connection components in an embodiment of the present utility model.

[0020] In the diagram: 1. Equipment body; 11. Tank; 12. Observation window; 13. Connecting pipe; 14. Explosion-proof pipe; 15. A connecting block; 16. B connecting block; 2. Movable component; 21. Explosion-proof plate; 22. A movable arc plate; 23. B movable arc plate; 24. Connecting column; 25. Slot box; 26. Buckle; 27. Threaded rod; 28. Sealing sleeve; 3. Connecting component; 31. A limit block; 32. B limit block; 33. Forward L-rod; 34. Reverse L-rod; 35. Movable column. Detailed Implementation

[0021] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that the description of these embodiments is for the purpose of helping to understand this utility model, but does not constitute a limitation on this utility model.

[0022] Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0023] Please see the appendix Figure 1 - Appendix Figure 4 This utility model discloses an explosion-proof and fire-resistant device for an oil-immersed transformer that facilitates the replacement of rupture discs. It includes a device body 1, a movable component 2, and a connecting component 3. The movable component 2 is installed on the outer surface of the device body 1, and the connecting component 3 is installed on the top of the device body 1. The movable component 2 includes an explosion-proof disc 21, an A movable arc plate 22, a B movable arc plate 23, a connecting post 24, a slot box 25, a buckle 26, a threaded rod 27, and a sealing sleeve 28. The outer surface of the explosion-proof disc 21 is movably connected to the inner wall of the sealing sleeve 28. One end of both the A movable arc plate 22 and the B movable arc plate 23 is connected to the outer surface of the connecting post 24. The card slot box 25 is fixedly connected to the other end of the A movable arc plate 22, and the back of the buckle 26 is fixedly connected to the other end of the B movable arc plate 23. The front of both the card slot box 25 and the buckle 26 are provided with threaded holes suitable for the threaded rod 27. The outer surface of the threaded rod 27 is threadedly connected to the inner wall of the threaded hole. The position of the card slot box 25 and the buckle 26 is fixed by the threaded rod 27. The outer surface of the sealing sleeve 28 is fixedly connected to the inner wall of the A movable arc plate 22. The bottom of the explosion-proof plate 21 is movably connected to the top of the explosion-proof tube 14, and the bottom of the sealing sleeve 28 is in contact with the top of the explosion-proof tube 14.

[0024] In Embodiment 1, the equipment body 1 includes a tank 11, an observation window 12, a connecting pipe 13, an explosion-proof pipe 14, a connecting block A 15, and a connecting block B 16. One side of the observation window 12 is fixedly connected to the outer surface of the tank 11. One end of the connecting pipe 13 extends into the interior of the tank 11. The bottom of the explosion-proof pipe 14 is fixedly connected to the top of the tank 11. The bottoms of both the connecting block A 15 and the connecting block B 16 are fixedly connected to the top of the tank 11. The inner walls of the movable arc plate A 22 and the movable arc plate B 23 are movably connected to the outer surface of the explosion-proof pipe 14.

[0025] Specifically, by using the connecting column 24 to wrap the A movable arc plate 22 and the B movable arc plate 23 to the outer surface of the explosion-proof pipe 14, the explosion-proof plate 21 can be installed quickly. The explosion-proof pipe 14, in conjunction with the explosion-proof plate 21, prevents the transformer from exploding under overvoltage conditions.

[0026] In embodiment 2, the connecting component 3 includes an A limiting block 31, a B limiting block 32, a forward L-rod 33, a reverse L-rod 34, and a movable column 35. The outer surfaces of the A limiting block 31 and the B limiting block 32 are both provided with movable grooves suitable for the movable column 35. One end of the movable column 35 is movably connected to the inner wall of the movable groove of the A limiting block 31, and the other end is movably connected to the inner wall of the movable groove of the B limiting block 32. The top of the forward L-rod 33 is fixedly connected to the bottom of the A limiting block 31, and the top of the reverse L-rod 34 is fixedly connected to the bottom of the B limiting block 32. The outer surface of the forward L-rod 33 is movably connected to the inner wall of the square hole, and the outer surface of the reverse L-rod 34 is movably connected to the inner wall of the hole.

[0027] Specifically, the A connecting block 15 and the B connecting block 16 are moved to the appropriate position by the movable column 35, and then connected to the forward L rod 33 and the reverse L rod 34. Then, the lifting equipment is connected to the A limit block 31 and the B limit block 32 to move the tank 11 to the appropriate position.

[0028] Working principle:

[0029] First, the staff adjusts the A limit block 31 and B limit block 32 to the appropriate position by moving the movable column 35. Then, the forward L rod 33 is placed inside the A connecting block 15, and at the same time, the reverse L rod 34 is placed inside the B connecting block 16 and the lifting equipment is connected to move the tank 11 to the appropriate position.

[0030] Next, the explosion-proof disc 21 is placed inside the sealing sleeve 28, and then the A movable arc plate 22 and the B movable arc plate are wrapped around the outside of the explosion-proof tube 14. At this time, the explosion-proof disc 21 is fixed to the top of the explosion-proof tube 14 by fixing the slot and the buckle 26 with the threaded rod 27. When the explosion-proof disc 21 is damaged, the threaded rod 27 is removed and the explosion-proof disc 21 is replaced. Then, the new explosion-proof disc 21 is placed inside the sealing sleeve 28, and then the A movable arc plate 22 and the B movable arc plate are wrapped around the outside of the explosion-proof tube 14 and fixed with the threaded rod 27. At this point, the entire process is completed.

[0031] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0033] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments.

[0034] For those skilled in the art, various changes, modifications, substitutions, and alterations to these embodiments without departing from the principles and spirit of this utility model will still fall within the protection scope of this utility model.

Claims

1. An explosion-proof and fire-resistant device for an oil-immersed transformer with easily replaceable rupture discs, comprising a device body (1), a movable component (2), and a connecting component (3), wherein the movable component (2) is installed on the outer surface of the device body (1), and the connecting component (3) is installed on the top of the device body (1), characterized in that: The movable component (2) includes an explosion-proof plate (21), an A movable arc plate (22), a B movable arc plate (23), a connecting post (24), a slot box (25), a buckle (26), a threaded rod (27), and a sealing sleeve (28). The outer surface of the explosion-proof plate (21) is movably connected to the inner wall of the sealing sleeve (28). One end of the A movable arc plate (22) and the B movable arc plate (23) are movably connected to the outer surface of the connecting post (24). The back of the slot box (25) is fixedly connected to the other end of the A movable arc plate (22). The back of the buckle (26) is fixedly connected to the other end of the B movable arc plate (23). The front of the slot box (25) and the buckle (26) are both provided with threaded holes suitable for the threaded rod (27). The outer surface of the threaded rod (27) is threadedly connected to the inner wall of the threaded hole. The outer surface of the sealing sleeve (28) is fixedly connected to the inner wall of the A movable arc plate (22).

2. The explosion-proof and fire-resistant device for an oil-immersed transformer with easily replaceable rupture discs as described in claim 1, characterized in that: The equipment body (1) includes a tank (11), an observation window (12), a connecting pipe (13), an explosion-proof pipe (14), an A connecting block (15), and a B connecting block (16). One side of the observation window (12) is fixedly connected to the outer surface of the tank (11). One end of the connecting pipe (13) extends into the inside of the tank (11). The bottom of the explosion-proof pipe (14) is fixedly connected to the top of the tank (11). The bottoms of the A connecting block (15) and the B connecting block (16) are both fixedly connected to the top of the tank (11).

3. The explosion-proof and fire-resistant device for an oil-immersed transformer with easily replaceable rupture discs as described in claim 1, characterized in that: The connecting assembly (3) includes an A limiting block (31), a B limiting block (32), a forward L-rod (33), a reverse L-rod (34), and a movable column (35). The outer surfaces of the A limiting block (31) and the B limiting block (32) are provided with movable grooves suitable for the movable column (35). One end of the movable column (35) is movably connected to the inner wall of the movable groove of the A limiting block (31), and the other end is movably connected to the inner wall of the movable groove of the B limiting block (32). The top of the forward L-rod (33) is fixedly connected to the bottom of the A limiting block (31), and the top of the reverse L-rod (34) is fixedly connected to the bottom of the B limiting block (32).

4. The explosion-proof and fire-resistant device for an oil-immersed transformer with easily replaceable rupture discs as described in claim 2, characterized in that: The inner walls of both the A movable arc plate (22) and the B movable arc plate (23) are movably connected to the outer surface of the explosion-proof pipe (14).

5. The explosion-proof and fire-resistant device for an oil-immersed transformer with easily replaceable rupture discs as described in claim 2, characterized in that: The bottom of the explosion-proof sheet (21) is movably connected to the top of the explosion-proof tube (14), and the bottom of the sealing sleeve (28) is in contact with the top of the explosion-proof tube (14).

6. The explosion-proof and fire-resistant device for an oil-immersed transformer with easily replaceable rupture discs as described in claim 3, characterized in that: The left side of the A connecting block (15) is provided with a square hole suitable for the forward L rod (33), and the outer surface of the forward L rod (33) is movably connected to the inner wall of the square hole.

7. The explosion-proof and fire-resistant device for an oil-immersed transformer with easily replaceable rupture discs as described in claim 2, characterized in that: The front of the B connecting block (16) is provided with a hole suitable for the reverse L rod (34), and the outer surface of the reverse L rod (34) is movably connected to the inner wall of the hole.

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