A protective cover for a pressure relief valve of an outdoor box-type transformer

Abstract

The utility model discloses a protection cover suitable for outdoor box type transformer pressure release valve relates to pressure valve protection cover technical field, the utility model discloses a stainless steel protection cover cover body is fixedly connected with stainless steel protection cover top cover at the top, still include sealing mechanism, sealing mechanism sets up at stainless steel protection cover cover body bottom, reinforcing mechanism, reinforcing mechanism sets up at sealing mechanism top, the utility model discloses a sealing mechanism is set up, specifically is screwed into sealing block to the ladder block of passage, and its integrated extrusion block embeds sealing groove, extrusion sealing ring seals passage, and then can cover stainless steel protection cover cover body, and the wedge block pressure sealing pad keeps off rainwater salt fog, and the installation board pressure water -absorbing sponge absorbs seepage, and the joint coats silicone sealant, and the multilayer sealing design of silicone sealant etc. can insulate rainwater, sand, salt fog and other external impurities, reduce the corrosion of valve body, and also can adapt to outdoor high and low temperature, sunning and drenching and other complex working conditions, prolong the service life of pressure release valve.

Description

Technical Field

[0001] This utility model belongs to the technical field of pressure valve protective cover, and in particular relates to a protective cover suitable for pressure relief valves of outdoor box-type transformers. Background Technology

[0002] With the increasing number of new energy installations in China, the problems exposed by outdoor box-type transformers in new energy power plants are also increasing, such as: aging seals, insulation breakdown due to moisture, condensation and corrosion of electrical components inside the box, and sand and dust intrusion into the box. In particular, the pressure relief valve installed on the top of the box-type transformer is corroded by the environment, causing the seal to fail. In rainy weather, rainwater seeps into the valve body, causing the pressure relief valve to activate and trip the box-type transformer.

[0003] When the pressure relief valve of an existing American-style box-type transformer is installed on the top of the enclosure, it is easily exposed to sunlight, wind, rain, and dust, which can damage the sealing parts and allow rainwater, salt spray, and dust to seep into the valve body. This can cause the valve core to rust and become stuck, resulting in either malfunctioning tripping or difficulty in releasing pressure properly during a fault. Therefore, a protective cover suitable for the pressure relief valve of an outdoor box-type transformer is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a protective cover for the pressure relief valve of an outdoor box-type transformer. By setting a sealing mechanism, specifically a stepped block that screws a sealing block into the channel, and an integral compression block embedded in the sealing groove, the sealing ring is compressed to seal the channel. Then, a stainless steel protective cover can be placed on top. A wedge-shaped block presses the sealing gasket to block rainwater and salt spray, an absorbent sponge presses the mounting plate to absorb seepage, and silicone sealant is applied to the joints. This multi-layered sealing design, including silicone sealant, can isolate rainwater, sand, salt spray, and other external impurities, reducing valve body corrosion. It can also adapt to complex outdoor operating conditions such as high and low temperatures, sun exposure, and rain, extending the service life of the pressure relief valve. This solves the problem that when the pressure relief valve of an American-style box-type transformer is installed on the top of the box, it is easily exposed to sun, rain, and sand, which can damage the sealing parts, causing rainwater, salt spray, and dust to seep into the valve body, leading to valve core corrosion and jamming, either causing malfunctions and tripping or difficulty in normal pressure relief during faults.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a protective cover for a pressure relief valve of an outdoor box-type transformer. It includes a stainless steel protective cover body, a stainless steel protective cover top cover fixedly connected to the top, a sealing mechanism located at the bottom of the stainless steel protective cover body, a reinforcing mechanism located at the top of the sealing mechanism, and a protective component located at the bottom of the stainless steel protective cover body. The sealing component is located on the outer surface of the stainless steel protective cover body. The protective component includes a mounting plate, a pressure valve base located at the bottom of the mounting plate, and a wedge block fixedly connected to the bottom of the mounting plate. A wedge-shaped groove is formed at the top of the pressure valve base, and a sealing gasket is installed on the inner wall of the wedge groove. An annular groove is formed at the top of the pressure valve base, and an absorbent sponge is installed on the inner wall of the annular groove. The wedge block is wedge-shaped and fits the inner wall of the wedge groove. Sealant is installed between the mounting plate and the outer surface of the pressure valve base. The top of the sealing gasket contacts the bottom of the wedge block, and the top of the absorbent sponge contacts the bottom of the mounting plate.

[0007] Furthermore, the sealing assembly includes a pressure relief valve, which is installed on the top of the pressure valve base. The outer surface of the stainless steel protective cover has two channels connected to each other. The inner walls of the two channels are fixedly connected with stepped blocks. Several sealing grooves are opened on the two stepped blocks. Sealing rings are installed inside the several sealing grooves. The two stepped blocks are both stepped. The components connected inside the two channels are the same.

[0008] Furthermore, both channels are equipped with sealing blocks inside, and several extrusion blocks are fixedly connected to the side of each sealing block near the stepped block. Both sealing blocks are provided with threads on their outer surfaces, and both sealing blocks are stepped in shape and are adapted to the two stepped blocks.

[0009] Furthermore, both sealing blocks are threadedly connected to the inner walls of the two stepped blocks via two threads, and the sides of the extrusion blocks near the stepped blocks are in contact with several sealing rings, and the extrusion blocks are adapted to the inner walls of several sealing grooves.

[0010] Furthermore, the reinforcement mechanism includes two screw holes, both of which are located on the top of the mounting plate. The two pressure relief valves pass through the pressure valve base and extend to the bottom of the pressure valve base. Fixing bolts are provided inside the two screw holes. The mounting plate and the pressure valve base are threadedly connected to the two fixing bolts through the two screw holes. Reinforcing disc springs are rotatably connected to the outer surfaces of the two fixing bolts, and the two reinforcing disc springs limit the movement of the two fixing bolts.

[0011] This utility model has the following beneficial effects:

[0012] 1. This utility model, through the setting of a sealing mechanism, specifically, screws the sealing block into the stepped block of the channel, and the integrated extrusion block is embedded in the sealing groove, extruding the sealing ring to seal the channel. Then, a stainless steel protective cover can be covered, the wedge-shaped block presses the sealing gasket to block rainwater and salt spray, the mounting plate presses the water-absorbing sponge to absorb seepage water, and the joints are coated with silicone sealant. The multi-layer sealing design of silicone sealant, etc., can isolate rainwater, sand, salt spray and other external impurities, reduce valve body corrosion, and can also adapt to complex working conditions such as high and low temperatures, sun exposure and rain, and extend the service life of the pressure relief valve.

[0013] 2. This utility model uses a reinforcement mechanism, specifically fixing the mounting plate to the pressure valve base with screws by means of fixing bolts. At the same time, the reinforcement disc spring on the outer surface of the fixing bolt can limit the bolt, reduce the loosening of the bolt caused by the vibration of the transformer operation, ensure that the protective cover is always tightly attached to the outside of the pressure relief valve, and the top of the protective cover has reserved space for the operation of the pressure relief valve, so as not to affect its normal pressure relief operation.

[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the pressure relief valve structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the protective component structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the sealing gasket structure of this utility model;

[0020] Figure 5 This utility model Figure 2 A magnified structural diagram of A in the middle;

[0021] Figure 6 This is a schematic diagram of the reinforcement mechanism of this utility model.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Stainless steel protective cover body; 111. Stainless steel protective cover top cover; 2. Sealing mechanism; 21. Protective component; 211. Mounting plate; 212. Pressure valve base; 213. Wedge block; 214. Wedge groove; 215. Sealing gasket; 216. Annular groove; 217. Absorbent sponge; 218. Sealing adhesive; 22. Sealing component; 221. Pressure relief valve; 222. Channel; 223. Stepped block; 224. Sealing groove; 225. Sealing ring; 226. Sealing block; 227. Extrusion block; 228. Thread; 3. Reinforcing mechanism; 311. Screw hole; 312. Fixing bolt; 313. Reinforcing disc spring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0025] Please see Figures 1-6As shown, this utility model is a protective cover for an outdoor box-type transformer pressure relief valve, including a stainless steel protective cover body 1, a stainless steel protective cover top cover 111 fixedly connected to the top, a sealing mechanism 2 located at the bottom of the stainless steel protective cover body 1, and a reinforcing mechanism 3 located at the top of the sealing mechanism 2. The sealing mechanism 2 includes a protective component 21 located at the bottom of the stainless steel protective cover body 1 and a sealing component 22 located on the outer surface of the stainless steel protective cover body 1. The protective component 21 includes a mounting plate 211, a pressure valve base 212 located at the bottom of the mounting plate 211, and a wedge block 213 fixedly connected to the bottom of the mounting plate 211. The pressure valve base 212 has an opening at the top. There is a wedge-shaped groove 214, and a sealing gasket 215 is installed on the inner wall of the wedge-shaped groove 214. An annular groove 216 is opened on the top of the pressure valve base 212, and an absorbent sponge 217 is installed on the inner wall of the annular groove 216. The wedge-shaped block 213 is wedge-shaped and fits the inner wall of the wedge groove 214. A sealant 218 is installed between the mounting plate 211 and the outer surface of the pressure valve base 212. The top of the sealing gasket 215 contacts the bottom of the wedge block 213, and the top of the absorbent sponge 217 contacts the bottom of the mounting plate 211. The sealing assembly 22 includes a pressure relief valve 221, which is installed on the top of the pressure valve base 212. Two channels 222 are connected to the outer surface of the stainless steel protective cover 1, and the inner walls of the two channels 222 are fixedly connected. The system includes two stepped blocks 223, each with several sealing grooves 224. Each sealing groove 224 contains a sealing ring 225. Both stepped blocks 223 are stepped in shape. The components connected inside the two channels 222 are identical. Each channel 222 contains a sealing block 226. Several compression blocks 227 are fixedly connected to the side of each sealing block 226 near the stepped block 223. The outer surface of each sealing block 226 has threads 228. Both sealing blocks 226 are stepped and fit into the two stepped blocks 223. Each sealing block 226 is threaded to the inner wall of the two stepped blocks 223 via two threads 228. The compression blocks 227... One side of the stepped block 223 is in contact with several sealing rings 225, and several extrusion blocks 227 are adapted to the inner wall of several sealing grooves 224. Specifically, the stepped block 223 is screwed into the channel 222 by the sealing block 226. The integral extrusion block 227 is embedded in the sealing groove 224, and the sealing ring 225 is extruded to seal the channel. Then, the stainless steel protective cover 1 can be covered. The wedge block 213 presses the sealing gasket 215 to block rainwater and salt spray. The mounting plate presses the water-absorbing sponge 217 to absorb water seepage. The joint is coated with silicone sealant 218. The multi-layer sealing design of silicone sealant 218 can isolate rainwater, sand, salt spray and other external impurities, reduce valve body corrosion, and adapt to complex working conditions such as high and low temperature, sun and rain, and extend the service life of the pressure relief valve 221.

[0026] The reinforcement mechanism 3 includes two screw holes 311, both of which are located on the top of the mounting plate 211. Two pressure relief valves 221 pass through the pressure valve base 212 and extend to the bottom of the pressure valve base 212. Fixing bolts 312 are installed inside the two screw holes 311. The mounting plate 211 and the pressure valve base 212 are threadedly connected to the two fixing bolts 312 through the two screw holes 311. Reinforcing disc springs 313 are rotatably connected to the outer surfaces of the two fixing bolts 312. The two reinforcing disc springs 313 limit the two fixing bolts 312. Specifically, the mounting plate 211 and the pressure valve base 212 are threadedly fixed by the fixing bolts 312. At the same time, the reinforcing disc springs 313 on the outer surfaces of the fixing bolts 312 can limit the bolts, reduce the loosening of the bolts caused by the vibration of the transformer operation, and ensure that the protective cover is always tightly fitted to the outside of the pressure relief valve 221. The top of the protective cover has reserved space for the operation of the pressure relief valve 221, which will not affect its normal pressure relief operation.

[0027] One specific application of this embodiment is as follows: During use, the user can rotate the sealing block 226 along its outer surface thread 228 into the stepped block 223 in the channel 222. During the tightening process, the compression block 227 on the sealing block 226 will gradually embed into the sealing groove 224 of the stepped block 223. The sealing block 226 is made of polytetrafluoroethylene, which has an extremely low coefficient of friction, excellent chemical corrosion resistance, and can withstand strong acids, strong alkalis, salt spray, etc., as well as high temperature resistance, preventing the sealing block 226 from aging due to contact with cable insulation, oil pipe media, or outdoor corrosive environments. At this time, the sealing ring 225 in the groove is compressed to achieve a seal at the channel 222, preventing external impurities from entering through the channel 222. Inside the protective cover, the stainless steel protective cover 1 can then be placed on top of the mounting plate 211. At this time, the wedge block 213 will move closer to the inside of the wedge groove 214, thereby squeezing the sealing gasket 215, which can effectively block the intrusion of rainwater, salt spray, etc. At the same time, the mounting plate 211 will simultaneously squeeze the water-absorbing sponge 217 in the annular groove 216, and the water-absorbing sponge 217 can absorb a small amount of seeping water vapor. Apply sealant 218 to the joint between the outer surface of the mounting plate 211 and the pressure valve base 212 for further sealing and protection. The sealant 218 is a silicone sealant with excellent weather resistance, UV resistance, water resistance and ozone resistance, which can form an elastic joint between the outer surface of the mounting plate 211 and the pressure valve base 212. The sealing layer provides long-term sealing to prevent rainwater and dust from entering through the joints, while also preventing the sealant 218 from cracking and aging due to changes in outdoor temperature and humidity. Furthermore, the extrusion block 227 and the sealing block 226 are integrally molded and made of the same PTFE material. When the sealing block 226 is screwed into the stepped block 223 via the thread 228, the extrusion block 227 simultaneously compresses the sealing ring 225, ensuring a tight fit between the inner wall of the channel 222 and the surface of the sealing block 226, completely blocking rainwater and dust from entering through the channel. Simultaneously, the PTFE material does not chemically react with cables or oil pipes, avoiding corrosion risks. Subsequently, the two fixing bolts 312 can be rotated and screwed into the screw holes 311 on the top of the mounting plate 211, connecting the mounting plate 211 to the pressure valve base 2. 12. A secure connection is established. Simultaneously, the reinforcing disc spring 313 on the outer surface of the fixing bolt 312 contacts the top of the mounting plate 211. As the fixing bolt 312 moves continuously into the screw hole 311, it compresses the reinforcing disc spring 313. Under the action of the reinforcing disc spring 313, the wedge block 213 and the mounting plate 211 further compress the absorbent sponge 217 and the sealing gasket 215. When the reinforcing disc spring 313 is installed, under the elastic action of the reinforcing disc spring 313, a thrust is generated that pushes the top of the fixing bolt 312 upward. In conjunction with the thread on its outer surface, the fixing bolt 312 is limited to prevent the bolt from loosening due to vibration during transformer operation, thus completing the installation of the entire protective cover.

[0028] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A protective cover for a pressure relief valve of an outdoor box-type transformer, comprising a stainless steel protective cover body (1), with a stainless steel protective cover top cover (111) fixedly connected to the top, characterized in that, Also includes: A sealing mechanism (2) is provided at the bottom of the stainless steel protective cover (1); as well as A reinforcing mechanism (3) is provided on top of the sealing mechanism (2); The sealing mechanism (2) includes a protective component (21), which is disposed at the bottom of the stainless steel protective cover (1); A sealing assembly (22) is disposed on the outer surface of the stainless steel protective cover (1); The protective component (21) includes a mounting plate (211), a pressure valve base (212) is provided at the bottom of the mounting plate (211), a wedge block (213) is fixedly connected to the bottom of the mounting plate (211), a wedge groove (214) is provided at the top of the pressure valve base (212), a sealing gasket (215) is installed on the inner wall of the wedge groove (214), an annular groove (216) is provided at the top of the pressure valve base (212), and an absorbent sponge (217) is installed on the inner wall of the annular groove (216). Among them, the wedge block (213) is wedge-shaped and is adapted to the inner wall of the wedge groove (214).

2. The protective cover for an outdoor box-type transformer pressure relief valve according to claim 1, characterized in that, A sealant (218) is installed between the mounting plate (211) and the outer surface of the pressure valve base (212), the top of the sealing gasket (215) contacts the bottom of the wedge block (213), and the top of the absorbent sponge (217) contacts the bottom of the mounting plate (211).

3. A protective cover for an outdoor box-type transformer pressure relief valve according to claim 2, characterized in that, The sealing assembly (22) includes a pressure relief valve (221), which is mounted on top of the pressure valve base (212), and the outer surface of the stainless steel protective cover (1) is provided with two channels (222).

4. A protective cover for an outdoor box-type transformer pressure relief valve according to claim 3, characterized in that, Both channels (222) have stepped blocks (223) fixedly connected to their inner walls. Several sealing grooves (224) are provided on the two stepped blocks (223), and sealing rings (225) are installed inside the several sealing grooves (224). Both of the step blocks (223) are stepped, and the components connected inside the two channels (222) are the same.

5. A protective cover for an outdoor box-type transformer pressure relief valve according to claim 4, characterized in that, Both channels (222) are provided with sealing blocks (226) inside. Several extrusion blocks (227) are fixedly connected to the side of the two sealing blocks (226) near the step block (223). Threads (228) are provided on the outer surface of the two sealing blocks (226). Both sealing blocks (226) are stepped, and both sealing blocks (226) are adapted to the two stepped blocks (223).

6. A protective cover for an outdoor box-type transformer pressure relief valve according to claim 5, characterized in that, Both of the sealing blocks (226) are threaded to the inner wall of the two stepped blocks (223) via two threads (228), and the side of the extrusion blocks (227) near the stepped blocks (223) is in contact with several sealing rings (225); Among them, several extrusion blocks (227) are adapted to the inner walls of several sealing grooves (224).

7. A protective cover for an outdoor box-type transformer pressure relief valve according to claim 3, characterized in that, The reinforcement mechanism (3) includes two screw holes (311), both of which are opened on the top of the mounting plate (211). The two pressure relief valves (221) pass through the pressure valve base (212) and extend to the bottom of the pressure valve base (212). Fixing bolts (312) are provided inside the two screw holes (311). The mounting plate (211) and the pressure valve base (212) are threadedly connected to the two fixing bolts (312) through the two screw holes (311). Reinforcement disc springs (313) are rotatably connected to the outer surfaces of the two fixing bolts (312). Among them, the two reinforcing disc springs (313) limit the two fixing bolts (312).

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