A sealing structure of a lightning arrester of a transformer box

Abstract

The utility model relates to the technical field of sealing support, concretely is a sealing structure of transformer box lightning arrester, the utility model discloses, including the lightning arrester body, the outside of lightning arrester body is equipped with sealing device, the sealing device includes the fixed ring, the inboard of fixed ring is fixedly connected with lightning arrester body, one end of fixed ring is fixedly connected with the sealing sleeve, one end of fixed ring is fixedly connected with the internal thread ring, the internal thread ring is connected with the external thread ring with internal thread, one end of external thread ring is fixedly connected with the connecting ring, one end of connecting ring is fixedly connected with the top cap, the one end fixedly connected with sealing washer of top cap near connecting ring, one end of fixed ring is fixedly connected with rubber ring. Solve the traditional transformer box lightning arrester sealing structure, more adopt simple single sealing ring structure, and the sealing effect is not good, and the problem that the poor sealing will make external moisture, moisture intrusion lightning arrester inside.

Description

Technical Field

[0001] This utility model relates to the field of sealing support technology, and in particular to a sealing structure for a transformer box surge arrester. Background Technology

[0002] A surge arrester is a device used to protect a transformer box and its internal equipment from lightning strikes and overvoltage damage. Under normal operating voltage, the surge arrester exhibits high resistance characteristics, which blocks the current in the circuit, acting like an insulator to ensure the normal operation of the transformer box and related equipment.

[0003] In the existing technology, the sealing structure of the surge arrester in the transformer box mostly adopts a simple single sealing ring structure, which has poor sealing effect. Poor sealing will allow external moisture and water to enter the inside of the surge arrester, reduce the insulation resistance of the zinc oxide varistor and internal insulation materials, increase the leakage current under normal operating voltage, increase power consumption and cause the surge arrester to heat up, further reduce insulation performance, and even cause thermal breakdown, causing the surge arrester to fail. Utility Model Content

[0004] The purpose of this utility model is to solve the shortcomings of the existing technology of traditional transformer box surge arrester sealing structure, which mostly adopts a simple single sealing ring structure, resulting in poor sealing effect and allowing external moisture and water to enter the surge arrester. Therefore, a sealing structure for transformer box surge arrester is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a sealing structure for a transformer box surge arrester, comprising a surge arrester body, a sealing device provided on the outside of the surge arrester body, the sealing device comprising a fixing ring, the inner side of the fixing ring being fixedly connected to the surge arrester body, a sealing sleeve being fixedly connected to one end of the fixing ring, an internal threaded ring being fixedly connected to one end of the fixing ring, an external threaded ring being threadedly connected to the inner threaded ring, a connecting ring being fixedly connected to one end of the external threaded ring, a top cover being fixedly connected to one end of the connecting ring, and a sealing gasket being fixedly connected to the end of the top cover near the connecting ring.

[0006] The effect achieved by the above components is that after the internal threaded ring and the external threaded ring are assembled, the sealing sleeve and the sealing gasket abut against each other.

[0007] Preferably, a rubber ring is fixedly connected to one end of the fixing ring, and a sealing ring is fixedly connected to one end of the internal threaded ring.

[0008] The effect achieved by the above components is to enhance the sealing performance of the sealing ring and rubber ring.

[0009] Preferably, one end of the top cover is fixedly connected to an outer cylinder.

[0010] The effect achieved by the above components is that the outer cylinder is fixed to the top cover.

[0011] Preferably, the outer cylinder has a plurality of anti-slip grooves on its arc surface, and the plurality of anti-slip grooves are evenly distributed on the outer cylinder.

[0012] The effect achieved by the above components is to increase friction by using anti-slip grooves.

[0013] Preferably, the arc surface of the internal threaded ring is fixedly connected to an abutment ring.

[0014] The effect achieved by the above components is that the retaining ring is fixed on the internal threaded ring.

[0015] Preferably, the arc surface of the internal threaded ring is provided with a protective device, the protective device including a support ring, the inner side of the support ring being fixedly connected to the internal threaded ring, and a plurality of rubber cylinders being fixedly connected to one end of the support ring, the plurality of rubber cylinders being evenly distributed on the support ring.

[0016] The aforementioned components achieve the following effect: the rubber cylinder is fixed on the support ring, and the support ring is fixed on the internal threaded ring.

[0017] Preferably, a U-shaped rod is interference-fitted inside the rubber cylinder, and a protective rod is fixedly connected to one end of the U-shaped rod.

[0018] The effect achieved by the above components is that the U-shaped rod and the rubber cylinder are matched, and the position of the protective rod is fixed after the U-shaped rod is assembled on the rubber cylinder.

[0019] Preferably, the arc surface of the support ring is fixedly connected with a plurality of L-shaped support plates, and the plurality of L-shaped support plates are evenly distributed on the support ring.

[0020] The effect achieved by the above components is that the L-shaped support plate is fixed on the support ring.

[0021] Preferably, an inner groove rubber clamp is fixedly connected to one side of the L-shaped support plate, and the interior of the inner groove rubber clamp is interference-fitted with the guard rod.

[0022] The aforementioned components achieve the following effect: the protective rod and the inner groove rubber clamp are assembled, and the inner groove rubber clamp limits the movement of the protective rod.

[0023] In summary, the beneficial effects of this utility model are as follows:

[0024] In this invention, the sealing device allows the external threaded ring and the internal threaded ring to be assembled when the sealing performance of the surge arrester needs to be enhanced. At this time, the top cover will be pressed against the sealing ring, and the sealing gasket and the sealing cylinder will also be tightly pressed against each other. Through the sealing device, the problem of poor sealing effect and external moisture and water entering the surge arrester is solved by the traditional transformer box surge arrester sealing structure, which mostly adopts a simple single sealing ring structure.

[0025] In this invention, a protective device is used to install a U-shaped rod into a rubber cylinder when protection of the surge arrester is required. This allows the protective rod to be evenly distributed around the surge arrester body, forming a stable and effective protective barrier. The protective device solves the problem of poor protection of the traditional transformer box surge arrester's sealing structure and the surge arrester's susceptibility to instability due to collisions, which can lead to damage to the sealing structure. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is a schematic diagram of the sealing structure of this utility model;

[0028] Figure 3 This is a cross-sectional structural diagram of the sealing structure of this utility model;

[0029] Figure 4 This is a schematic diagram of the protective structure of this utility model.

[0030] Legend: 1. Surge arrester body; 2. Sealing device; 201. Fixing ring; 202. Internal threaded ring; 203. External threaded ring; 204. Sealing sleeve; 205. Connecting ring; 206. Top cover; 207. Sealing gasket; 208. Sealing ring; 209. Rubber ring; 210. Outer cylinder; 211. Anti-slip groove; 212. Abutment ring; 3. Protective device; 31. Support ring; 32. Rubber cylinder; 33. U-shaped rod; 34. L-shaped support plate; 35. Protective rod; 36. Inner groove rubber clamping plate. Detailed Implementation

[0031] Reference Figure 1 As shown, this utility model provides a technical solution: a sealing structure for a transformer box surge arrester, including a surge arrester body 1, a sealing device 2 on the outside of the surge arrester body 1, and a protective device 3 on the arc surface of the inner threaded ring 202.

[0032] The specific design and function of its sealing device 2 and protective device 3 will be explained in detail below.

[0033] Reference Figure 2 and Figure 3As shown in this embodiment: the sealing device 2 includes a fixing ring 201, the inner side of which is fixedly connected to the surge arrester body 1. A sealing sleeve 204 is fixedly connected to one end of the fixing ring 201, and an internal threaded ring 202 is fixedly connected to one end of the fixing ring 201. An external threaded ring 203 is connected to the internal thread of the internal threaded ring 202. A connecting ring 205 is fixedly connected to one end of the external threaded ring 203. A top cover 206 is fixedly connected to one end of the connecting ring 205. A sealing gasket 207 is fixedly connected to the end of the top cover 206 near the connecting ring 205. This achieves the effect of the sealing sleeve 204 and the sealing gasket 207 abutting against each other after the internal threaded ring 202 and the external threaded ring 203 are assembled. A rubber ring 209 is fixedly connected to one end of the fixing ring 201, and a sealing ring 208 is fixedly connected to one end of the internal threaded ring 202. This achieves the effect of the sealing ring 208 and the rubber ring 209 enhancing the sealing performance. An outer cylinder 210 is fixedly connected to one end of the top cover 206. This achieves the effect of fixing the outer cylinder 210 to the top cover 206. Several anti-slip grooves 211 are evenly distributed on the arc surface of the outer cylinder 210, increasing friction. A retaining ring 212 is fixedly connected to the arc surface of the internal threaded ring 202, ensuring the retaining ring 212 is fixed to the internal threaded ring 202.

[0034] Reference Figure 4 As shown in this embodiment: the protective device 3 includes a support ring 31, the inner side of which is fixedly connected to an internal threaded ring 202. A plurality of rubber cylinders 32 are fixedly connected to one end of the support ring 31, and the rubber cylinders 32 are evenly distributed on the support ring 31. This achieves the effect of fixing the rubber cylinders 32 to the support ring 31, and the support ring 31 to the internal threaded ring 202. A U-shaped rod 33 is interference-fitted inside the rubber cylinder 32, and a protective rod 35 is fixedly connected to one end of the U-shaped rod 33. This achieves the effect of matching the U-shaped rod 33 and the rubber cylinder 32, and fixing the position of the protective rod 35 after the U-shaped rod 33 is assembled on the rubber cylinder 32. A plurality of L-shaped support plates 34 are fixedly connected to the arc surface of the support ring 31, and the L-shaped support plates 34 are evenly distributed on the support ring 31. This achieves the effect of fixing the L-shaped support plates 34 to the support ring 31. An inner groove rubber clamping plate 36 is fixedly connected to one side of the L-shaped support plate 34. The interior of the inner groove rubber clamping plate 36 is interference-fitted with the guard rod 35. This achieves the effect of assembling the guard rod 35 and the inner groove rubber clamping plate 36, with the inner groove rubber clamping plate 36 limiting the position of the guard rod 35.

[0035] Working principle: When enhanced sealing of the surge arrester is required, the operator first installs the fixing ring 201 on the surge arrester body 1 using the sealing device 2. Then, the outer cylinder 210 is moved, causing the top cover 206 to move the connecting ring 205, bringing the external threaded ring 203 and the internal threaded ring 202 into relative positions. Subsequently, the outer cylinder 210 is rotated, and the external threaded ring 203 gradually screws into the internal threaded ring 202. After continuous rotation of the outer cylinder 210, the outer cylinder 210 and the abutment ring 212 are tightly abutted, and the sealing is stopped. When the outer cylinder 210 is rotated, the top cover 206 will be pressed against the sealing ring 208. At the same time, the sealing gasket 207 will also be pressed tightly against the sealing cylinder. This can effectively enhance the sealing performance of the surge arrester body 1 and better prevent external moisture, dust and other impurities from entering the surge arrester. Through the sealing device 2, the problem of poor sealing performance caused by the traditional single sealing ring 208 structure of the traditional transformer box surge arrester is solved. Poor sealing will allow external moisture and water to enter the surge arrester.

[0036] With the protective device 3, when surge arrester protection is required, the operator first installs the support ring 31 onto the internal threaded ring 202, laying the foundation for the subsequent protective structure. Then, the U-shaped rod 33 is assembled into the rubber cylinder 32, and the protective rod 35 is precisely engaged in the inner groove rubber clamping plate 36. This ensures the protective rod 35 is evenly distributed around the surge arrester body 1, forming a stable and effective protective barrier that can resist potential external collisions, impacts, and other damage, comprehensively ensuring the safe operation of the surge arrester body 1. The protective device 3 effectively solves the problem of poor protection in traditional transformer box surge arrester sealing structures, which are prone to instability due to collisions, leading to damage to the sealing structure.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A sealing structure for a surge arrester in a transformer substation, comprising a surge arrester body (1), characterized in that: The arrester body (1) is provided with a sealing device (2) on the outside. The sealing device (2) includes a fixing ring (201). The inner side of the fixing ring (201) is fixedly connected to the arrester body (1). A sealing sleeve (204) is fixedly connected to one end of the fixing ring (201). An internal threaded ring (202) is fixedly connected to one end of the fixing ring (201). An external threaded ring (203) is connected to the internal thread of the internal threaded ring (202). A connecting ring (205) is fixedly connected to one end of the external threaded ring (203). A top cover (206) is fixedly connected to one end of the connecting ring (205). A sealing gasket (207) is fixedly connected to one end of the top cover (206) near the connecting ring (205).

2. The sealing structure of a transformer box surge arrester according to claim 1, characterized in that: A rubber ring (209) is fixedly connected to one end of the fixing ring (201), and a sealing ring (208) is fixedly connected to one end of the internal threaded ring (202).

3. The sealing structure of a transformer box surge arrester according to claim 1, characterized in that: One end of the top cover (206) is fixedly connected to the outer cylinder (210).

4. The sealing structure of a transformer box surge arrester according to claim 3, characterized in that: The outer cylinder (210) has several anti-slip grooves (211) on its arc surface, and the several anti-slip grooves (211) are evenly distributed on the outer cylinder (210).

5. The sealing structure of a transformer box surge arrester according to claim 2, characterized in that: The arc surface of the internal threaded ring (202) is fixedly connected to an abutment ring (212).

6. The sealing structure of a transformer box surge arrester according to claim 5, characterized in that: The arc surface of the internal threaded ring (202) is provided with a protective device (3). The protective device (3) includes a support ring (31). The inner side of the support ring (31) is fixedly connected to the internal threaded ring (202). One end of the support ring (31) is fixedly connected with a plurality of rubber cylinders (32). The plurality of rubber cylinders (32) are evenly distributed on the support ring (31).

7. The sealing structure of a transformer box surge arrester according to claim 6, characterized in that: The rubber cylinder (32) is internally interference-fitted with a U-shaped rod (33), and a protective rod (35) is fixedly connected to one end of the U-shaped rod (33).

8. The sealing structure of a transformer box surge arrester according to claim 6, characterized in that: The arc surface of the support ring (31) is fixedly connected with several L-shaped support plates (34), and the several L-shaped support plates (34) are evenly distributed on the support ring (31).

9. The sealing structure of a transformer box surge arrester according to claim 8, characterized in that: An inner groove rubber clamp (36) is fixedly connected to one side of the L-shaped support plate (34), and the interior of the inner groove rubber clamp (36) is interference-fitted with the guard rod (35).

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