Corrosion-resistant photovoltaic connector seal

Abstract

This utility model discloses a corrosion-resistant photovoltaic connector sealing device, specifically relating to the field of photovoltaic connector sealing technology. It includes a protective shell and a protective cover. Multiple fixing plates are symmetrically fixed to both sides of the protective cover. One end of each fixing plate has a locking hole. Locking blocks are fixed to both sides of the protective shell at positions corresponding to the locking holes. Sealing grooves and combined locking grooves are formed on opposite sides of both the protective shell and the protective cover. This utility model first protects the photovoltaic connector through the protective shell and cover. The compression of the sealing strip and gasket by the protective shell and cover achieves a double-layer seal. Even if one layer of the seal is damaged due to corrosion or aging, the sealing effect can still be maintained, extending the service life. Furthermore, gas is injected into the sealing half-ring through the connecting pipe, causing the sealing half-ring to expand. This allows for sealing and protection of photovoltaic connector wires of different diameters, improving the corrosion resistance.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic connector sealing technology, and more specifically, to a corrosion-resistant photovoltaic connector sealing device. Background Technology

[0002] Photovoltaic connectors are the core components for power transmission between photovoltaic modules and between modules and inverters. Since photovoltaic connectors are located outdoors, they have strict requirements for sealing performance. If the seal of the connector fails, it will cause serious situations such as fire and power outage. Therefore, sealing devices are used to protect photovoltaic connectors.

[0003] Existing sealing and protection devices mostly achieve protection through a combination of protective shell and protective cover, and seal by setting a sealing ring to prevent external liquids from entering and corroding the photovoltaic connector. However, sealing by simply squeezing the sealing ring can easily affect the sealing effect due to the aging of the rubber ring after long-term use. In addition, the diameter of photovoltaic connector wires varies, and a rubber sleeve with a fixed diameter cannot adapt to photovoltaic connector wires of different diameters. When the wire diameter does not match the sealing sleeve, gaps will be generated, affecting the sealing effect and thus affecting the anti-corrosion effect. Therefore, an anti-corrosion photovoltaic connector sealing device is proposed. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a corrosion-resistant photovoltaic connector sealing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a corrosion-resistant photovoltaic connector sealing device, comprising a protective shell and a protective cover, both made of high-strength, corrosion-resistant reinforced polyamide material, with an anti-corrosion coating on the surface. The two together form a closed protective space, completely enclosing the photovoltaic connector and resisting direct erosion from external physical impacts and corrosive environments. Multiple fixing plates are symmetrically fixedly connected to both sides of the protective cover, and a locking hole is provided at one end of each fixing plate. Locking blocks are fixedly connected to both sides of the protective shell at positions corresponding to the locking holes. Through the cooperation of the locking blocks and locking holes, the protective shell and protective cover can be quickly disassembled and fixed without tools, while ensuring the tightness of the shell connection and facilitating inspection and maintenance. Sealing grooves and combination locking grooves are provided on the opposite side walls of the protective shell and protective cover.

[0006] Both ends of the protective shell and the protective cover have arc-shaped grooves and limiting ring grooves on opposite sides. A sealing strip is embedded in the middle of the sealing groove. The sealing strip is made of fluororubber that is resistant to aging and chemical corrosion. When the protective shell and the protective cover are closed, the sealing strip can be compressed to form a sealing barrier. A locking strip is embedded in the middle of the combined slot. A sealing gasket is fixedly connected to one side of the locking strip. A sealing gasket is provided on one side of the sealing gasket. A vent hole is opened at the bottom of the inner cavity of the combined slot. The locking strip and the combined slot can conveniently limit the sealing gasket. By squeezing the sealing gasket, a secondary seal can be formed to improve the sealing effect. The vent hole can also prevent liquid that accidentally enters the combined slot from entering the sealed cavity formed by the protective shell and the protective cover.

[0007] A sealing half-ring is provided in the middle of the arc-shaped groove. Limiting plates are symmetrically fixedly connected to both sides of the sealing half-ring. A placement groove is provided on one side of the sealing half-ring, and a connecting pipe is fixedly connected to one side of the sealing half-ring. The two sealing half-rings can wrap the wire when the protective shell and protective cover are closed. Gas is injected into the sealing half-ring through the connecting pipe, which can cause the sealing half-rings to collide, thereby squeezing the wire to form a radial seal and preventing corrosive media from entering along the surface of the wire. The limiting plates are located in the middle of the limiting ring groove, which can limit the installation of the sealing half-ring and improve the stability of the sealing half-ring.

[0008] Preferably, the sealing groove is disposed inside the combined slot, and both ends of the sealing groove and the combined slot are respectively connected to the grooves of the two arc-shaped grooves and the limiting ring groove, so as to facilitate sealing connection.

[0009] Preferably, the sealing gasket is disposed on one side of the sealing strip, the top wall of the sealing gasket is in contact with the top wall of the sealing strip, and both ends of the sealing strip and the retaining strip extend into the grooves of the limiting ring groove and the arc groove. By squeezing the sealing strip and the sealing gasket, a double-layer sealing effect can be formed.

[0010] Preferably, the top wall of the card block is set as an inclined surface, the card block is set in the middle of the card hole, the thickness of the fixing plate and the card block is the same, and the card block can be easily connected to the card hole at one end of the fixing plate.

[0011] Preferably, one end of the connecting pipe passes through the middle of the combined slot, the middle of the sealing half ring is provided with a cavity, the sealing half ring is made of rubber, and the internal cavity of the sealing half ring is provided with an air bladder. Injecting gas into the air bladder in the middle of the sealing half ring through the connecting pipe can cause the middle of the sealing half ring to expand, thereby squeezing and wrapping the wire, improving the sealing strength, and preventing corrosive media from penetrating along the surface of the wire.

[0012] Preferably, the limiting plate is located in the middle of the limiting ring groove, and the cross-sectional shape of both the limiting plate and the placement groove is set as a semi-circular structure to avoid the sealing half ring from shifting due to vibration or compression, which would affect the sealing effect.

[0013] Preferably, a photovoltaic connector is provided in the middle of the protective shell and the protective cover, and wires are fixedly connected to both ends of the photovoltaic connector, the wires passing through the middle of the placement groove.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] 1. This utility model first protects the photovoltaic connector by setting a protective shell and a protective cover. By squeezing the sealing strip and sealing gasket by the protective shell and protective cover, a double seal can be achieved through the sealing strip and sealing gasket. Even if the first layer of seal is damaged by corrosion and aging, the sealing function can still be achieved, thereby extending the service life. Furthermore, by injecting gas into the sealing half ring through the connecting pipe to expand the sealing half ring, it can be adapted to photovoltaic connector wires of different diameters for sealing protection, improving the anti-corrosion effect and improving practicality.

[0016] 2. This utility model also facilitates quick assembly and disassembly through the combination of a fixing plate and a locking block, and can be fixed without tools. At the same time, it ensures the tightness of the shell connection and facilitates inspection and maintenance. The locking strip and the combination slot facilitate the limiting of the sealing gasket. The limiting plate is located in the middle of the limiting ring groove, which can limit the installation of the sealing half ring, improve the stability of the sealing half ring placement, and avoid the sealing half ring from shifting due to vibration or compression, which would affect the sealing effect.

[0017] In summary, through the interaction of the above-mentioned multiple functions, the sealing strength can be enhanced by double sealing. Even if one layer of sealing is damaged due to corrosion and aging, the sealing function can still be achieved, thereby extending the service life. Furthermore, it can be adapted to photovoltaic connector wires of different diameters for sealing protection, improving the anti-corrosion effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of this utility model.

[0020] Figure 3 This is a bottom view of the protective cover of this utility model.

[0021] Figure 4 This is a schematic diagram showing the disassembled structure of the protective shell, sealing half-ring, sealing strip, and sealing gasket of this utility model.

[0022] Figure 5 This is a schematic diagram of the sealing semi-ring of this utility model.

[0023] The attached diagram is labeled as follows: 1. Protective shell; 2. Protective cover; 3. Fixing plate; 4. Clip hole; 5. Clip block; 6. Sealing groove; 7. Combination clip groove; 8. Limiting ring groove; 9. Sealing strip; 10. Sealing gasket; 11. Clip strip; 12. Sealing gasket; 13. Vent hole; 14. Arc groove; 15. Sealing half ring; 16. Connecting pipe; 17. Limiting plate; 18. Placement groove; 19. Photovoltaic connector; 20. Wire. 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 protection scope of the present utility model.

[0025] As attached Figure 1-5 The corrosion-resistant photovoltaic connector sealing device shown includes a protective shell 1 and a protective cover 2. Both the protective shell 1 and the protective cover 2 are made of high-strength, corrosion-resistant reinforced polyamide material and have an anti-corrosion coating on their surfaces. The two together form a closed protective space that completely encloses the photovoltaic connector 19, resisting direct erosion from external physical impacts and corrosive environments. Multiple fixing plates 3 are symmetrically fixed to both sides of the protective cover 2. One end of the fixing plate 3 has a locking hole 4. The two sides of the protective shell 1 are fixedly connected to locking blocks 5 at positions corresponding to the locking holes 4. Through the cooperation of the locking blocks 5 and the locking holes 4, the protective shell 1 and the protective cover 2 can be quickly disassembled and fixed without tools, while ensuring the tightness of the shell connection and facilitating inspection and maintenance. The opposite side walls of the protective shell 1 and the protective cover 2 are provided with sealing grooves 6 and combination locking grooves 7.

[0026] Both ends of the protective shell 1 and the protective cover 2 are provided with arc-shaped grooves 14 and limiting ring grooves 8 on opposite sides. A sealing strip 9 is embedded in the middle of the sealing groove 6. The sealing strip 9 is made of fluororubber that is resistant to aging and chemical corrosion. When the protective shell 1 and the protective cover 2 are closed, the sealing strip 9 can be compressed to form a sealing barrier. A retaining strip 11 is embedded in the middle of the combined slot 7. A sealing pad 10 is fixedly connected to one side of the retaining strip 11. A sealing pad 12 is provided on one side of the sealing pad 10. An exhaust hole 13 is provided at the bottom of the inner cavity of the combined slot 7. The retaining strip 11 cooperates with the combined slot 7 to conveniently limit the sealing pad 10. By squeezing the sealing pad 12, a secondary seal can be formed to improve the sealing effect. The exhaust hole 13 can also prevent liquid that accidentally enters the combined slot 7 from entering the sealed cavity formed by the protective shell 1 and the protective cover 2.

[0027] A sealing half-ring 15 is provided in the middle of the arc groove 14. Limiting plates 17 are symmetrically fixedly connected to both sides of the sealing half-ring 15. A placement groove 18 is provided on one side of the sealing half-ring 15. A connecting pipe 16 is fixedly connected to one side of the sealing half-ring 15. The two sealing half-rings 15 can wrap the wire 20 when the protective shell 1 and the protective cover 2 are closed. Gas is injected into the sealing half-ring 15 through the connecting pipe 16, which can cause the sealing half-rings 15 to collide and squeeze the wire 20 to form a radial seal, preventing corrosive media from entering along the surface of the wire. The limiting plate 17 is located in the middle of the limiting ring groove 8 and can limit the installation of the sealing half-ring 15, improving the stability of the sealing half-ring 15.

[0028] As attached Figure 1 , 3 As shown in Figure 4, the sealing groove 6 is located inside the combined slot 7. The two ends of the sealing groove 6 and the combined slot 7 are respectively connected to the grooves of the two arc grooves 14 and the limiting ring groove 8. The sealing gasket 10 is located on one side of the sealing strip 9. The top wall of the sealing gasket 12 is in contact with the top wall of the sealing strip 9. Both ends of the sealing strip 9 and the locking strip 11 extend into the grooves of the limiting ring groove 8 and the arc groove 14. The top wall of the locking block 5 is set as an inclined surface. The locking block 5 is located in the middle of the locking hole 4. The fixing plate 3 and the locking block 5 have the same thickness. By squeezing the sealing strip 9 and the sealing gasket 12, a double-layer sealing effect can be formed. The locking block 5 is conveniently connected to the locking hole 4 at one end of the fixing plate 3.

[0029] As attached Figure 2 , 4 As shown in Figure 5, one end of the connecting pipe 16 passes through the middle of the combined slot 7. A cavity is provided in the middle of the sealing half-ring 15. The sealing half-ring 15 is made of rubber. An air bladder is provided in the internal cavity of the sealing half-ring 15. The limiting plate 17 is located in the middle of the limiting ring groove 8. The cross-sectional shape of the limiting plate 17 and the placement groove 18 is set as a semi-circular structure. A photovoltaic connector 19 is provided in the middle of the protective shell 1 and the protective cover 2. Wires 20 are fixedly connected to both ends of the photovoltaic connector 19. The wires 20 pass through the middle of the placement groove 18. Gas is injected into the air bladder in the middle of the sealing half-ring 15 through the connecting pipe 16, which can cause the middle of the sealing half-ring 15 to expand, thereby squeezing and wrapping the wires 20, improving the sealing strength, preventing corrosive media from intruding along the surface of the wires, and avoiding the sealing effect from being affected by the displacement of the sealing half-ring 15 due to vibration or squeezing.

[0030] The working principle of this utility model is as follows: When in use, the photovoltaic connector 19 is placed in the middle of the protective shell 1, so that the wire 20 is located at the top placement groove 18 of the sealing half ring 15 on both sides. Then, the protective cover 2 is placed on the top of the protective shell 1, so that one end of the fixing plate 3 is moved to both sides of the protective shell 1 until the card block 5 is inserted into the card hole 4 to complete the tight connection between the protective shell 1 and the protective cover 2.

[0031] When the protective shell 1 and the protective cover 2 are connected, they will compress the sealing strip 9 and the sealing gasket 12, thus achieving a double seal through the sealing strip 9 and the sealing gasket 12. Even if it is damaged by corrosion once, the service life can be extended through the other seal.

[0032] Then, gas is injected into the air bladder inside the sealing half-ring 15 through the connecting pipe 16, causing the sealing half-ring 15 to expand and squeeze the wire 20, thereby forming a radial seal to prevent corrosive media from entering along the surface of the wire. The limiting plate 17 can protect the sealing half-ring 15, preventing corrosive liquid from acting directly on the sealing half-ring 15 and prolonging the anti-corrosion effect.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A corrosion-resistant photovoltaic connector sealing device, comprising a protective shell (1) and a protective cover (2), characterized in that: Multiple fixing plates (3) are symmetrically fixedly connected to both sides of the protective cover (2). A card hole (4) is opened at one end of the fixing plate (3). Card blocks (5) are fixedly connected to both sides of the protective shell (1) at positions corresponding to the card hole (4). A sealing groove (6) and a combination card groove (7) are opened on the opposite side wall of the protective shell (1) and the protective cover (2). The protective shell (1) and the protective cover (2) are provided with arc grooves (14) and limiting ring grooves (8) on opposite sides at both ends. A sealing strip (9) is embedded in the middle of the sealing groove (6). A locking strip (11) is embedded in the middle of the combined slot (7). A sealing gasket (10) is fixedly connected to one side of the locking strip (11). A sealing gasket (12) is provided on one side of the sealing gasket (10). An exhaust hole (13) is provided at the bottom of the inner cavity of the combined slot (7). A sealing half-ring (15) is provided in the middle of the arc groove (14). Limiting plates (17) are symmetrically fixedly connected to both sides of the sealing half-ring (15). A placement groove (18) is provided on one side of the sealing half-ring (15). A connecting pipe (16) is fixedly connected to one side of the sealing half-ring (15).

2. The corrosion-proof photovoltaic connector sealing device of claim 1, wherein: The sealing groove (6) is located inside the combined slot (7), and the two ends of the sealing groove (6) and the combined slot (7) are respectively connected to the grooves of the two arc-shaped grooves (14) and the limiting ring groove (8).

3. The corrosion-proof photovoltaic connector sealing device of claim 1, wherein: The sealing gasket (10) is disposed on one side of the sealing strip (9), the top wall of the sealing gasket (12) is in contact with the top wall of the sealing strip (9), and both ends of the sealing strip (9) and the retaining strip (11) extend into the groove of the limiting ring groove (8) and the arc groove (14).

4. The corrosion-resistant photovoltaic connector sealing device according to claim 1, characterized in that: The top wall of the card block (5) is set as an inclined surface, the card block (5) is set in the middle of the card hole (4), and the thickness of the fixing plate (3) and the card block (5) is the same.

5. The corrosion-resistant photovoltaic connector sealing device according to claim 1, characterized in that: One end of the connecting pipe (16) passes through the middle of the combined slot (7), and the middle of the sealing half ring (15) is provided with a cavity. The sealing half ring (15) is made of rubber, and the internal cavity of the sealing half ring (15) is provided with an airbag.

6. The corrosion-proof photovoltaic connector sealing device of claim 1, wherein: The limiting plate (17) is located in the middle of the limiting ring groove (8), and the cross-sectional shape of the limiting plate (17) and the placement groove (18) is set as a semi-circular structure.

7. The corrosion-resistant photovoltaic connector sealing device according to claim 1, characterized in that: A photovoltaic connector (19) is provided in the middle of the protective shell (1) and the protective cover (2). The two ends of the photovoltaic connector (19) are fixedly connected with wires (20), and the wires (20) pass through the middle of the placement groove (18).

Images