Upvc-p high voltage electrical protection sleeve

Abstract

The utility model discloses Upvc-P high voltage strong electricity protection sleeve pipe relates to cable sleeve technical field, include: the sleeve body, the left end of sleeve body is equipped with the first connecting head, the right end of sleeve body is equipped with the second connecting head, the inboard of sleeve body is equipped with fire prevention mechanism. The utility model adopts above -mentioned structure, the process of two sleeve body's connection, the second connecting head connecting block of one sleeve body inserts to the first connecting head connecting groove department of another sleeve body, then through the tool operation hexagon block in round groove, make the hexagon block connection's stud screw thread telescoping in the screw hole, simultaneously, stud rotation pushes the bevel block and slides in the square groove inboard, and the bevel block is opposite the sliding of connecting hole orifice of connecting block through the slope, makes the bevel block through the insertion in the connecting hole of connecting block, can be fixed tightly to the second connecting head and the first connecting head of connecting block connection of connecting block, thereby can be convenient to the quick connection assembly use of two sleeve body.

Description

Technical Field

[0001] This utility model belongs to the field of cable conduit technology, and specifically relates to the UPVC-P high voltage and high power protection conduit. Background Technology

[0002] The main material of UPVC-P protective sleeve is rigid polyvinyl chloride. UPVC is a pipe made from sanitary-grade polyvinyl chloride resin as the main raw material, with the addition of appropriate amounts of stabilizers, lubricants, fillers, colorants, etc. It is produced by extrusion molding with a plastic extruder and injection molding with an injection molding machine, followed by cooling, curing, shaping, inspection, and packaging. Its excellent moisture resistance, insulation, impact resistance, and acid and alkali corrosion resistance make it commonly used for the protection of high-voltage cables.

[0003] Currently, traditional high-voltage power protection bushings still have some shortcomings in practical use. For example, the existing connection methods for protective bushings mainly include fusion welding and socket welding. While fusion welding offers high sealing performance, it requires pre-treatment and positioning of the bushing interface, which is cumbersome and inconvenient, affecting the on-site construction progress. Socket welding involves a spigot at one end of the pipe segment and a socket at the other, with the socket's diameter slightly larger than the spigot's outer diameter. During installation, the spigot of one pipe segment is inserted into the socket of another, and the annular gap between the two ends is filled with interface material to achieve a tight connection. While this method ensures sealing and improves installation efficiency, the pipes may need to be moved during assembly, which can damage the sealing material at the interface and affect the sealing effect of the bushing interface. Utility Model Content

[0004] In view of the problems mentioned in the background art, the purpose of this utility model is to provide an UPVC-P high voltage and high current protection bushing to solve the problems mentioned in the background art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: The UPVC-P high-voltage protection bushing includes: a bushing body; a first connector at the left end of the bushing body; a second connector at the right end of the bushing body; a fireproof mechanism on the inner side of the bushing body; a slot on the inner wall of the first connector; an inner sealing groove on the inner wall of the slot; an outer sealing groove at the opening of the slot; a sleeve fixedly connected to the right end of the second connector; an inner sealing ring fixedly connected to the opening of the sleeve; an outer sealing ring fixedly connected to the side of the second connector near the sleeve; one end of the sleeve passing through the outer sealing ring; a connecting groove at an equal angle on the side of the first connector away from the bushing body; a connecting block fixedly connected to the side of the second connector away from the bushing body; a connecting hole on the inner side of the connecting block; and a connecting mechanism on the inner side of the connecting groove. The connecting mechanism includes a circular groove, which is opened at equal angles on the outer side of the first connector. A square groove is opened on the inner side of the connecting groove, and a screw hole is opened on the inner side of the circular groove. The circular groove and the square groove are interconnected through the screw hole. A stud is threadedly connected to the inner side of the screw hole. A hexagonal block is fixedly connected to one end of the stud, and an angled block is rotatably connected to the other end of the stud away from the hexagonal block. The angled block is slidably connected to the inner side of the square groove. The fireproof mechanism includes a first fireproof layer, a second fireproof layer, a flame-retardant layer, and a wear-resistant layer. The flame-retardant layer is located inside the sleeve body. The first fireproof layer is located between the flame-retardant layer and the second fireproof layer. The inner wall of the second fireproof layer is provided with a wear-resistant layer.

[0006] As a preferred technical solution, the second connector has a first mounting groove on the side near the insert, the outer sealing ring is fixedly connected to the inside of the first mounting groove, the insert has a second mounting groove at the opening, and the inner sealing ring is fixedly connected to the inside of the second mounting groove.

[0007] As a preferred technical solution, a hexagonal groove is provided at the end of the hexagonal block away from the stud, a rotating sleeve is fixedly connected to the outer side of the beveled block, and the outer wall of the end of the stud away from the hexagonal block is rotatably connected to the inner side of the sleeve opening of the rotating sleeve.

[0008] As a preferred technical solution, the outer side of the beveled block is symmetrically provided with a sliding groove, and a slider is fixedly installed on the inner side of the square groove, with one end of the slider slidably connected to the inner side of the sliding groove.

[0009] As a preferred technical solution, a cover groove is provided at the opening of the circular groove, and a rubber plug is inserted into the inner side of the cover groove.

[0010] As a preferred technical solution, the first connector and the second connector are fixedly connected to a reinforcing block at equal angles. The first connector is fixedly connected to the outer wall of the left end of the sleeve body of the reinforcing block, and the second connector is fixedly connected to the outer wall of the right end of the sleeve body through the reinforcing block.

[0011] In summary, the present invention has the following main advantages: First, during the connection of the two sleeve bodies, the second connector block of one sleeve body is inserted into the first connector groove of the other sleeve body. Then, the hexagonal block in the circular groove is operated by a tool, causing the stud connected to the hexagonal block to extend and retract within the threaded hole. At the same time, the stud rotates and pushes the beveled block to slide inside the square groove. The beveled block slides relative to the opening of the connecting hole of the connecting block through the beveled surface. By inserting the beveled block into the connecting hole of the connecting block, the second connector and the first connector of the connecting block can be tightened and fixed. This allows for quick connection and assembly of the two sleeve bodies. At this time, the inner sealing ring on the insert sleeve and the inner sealing groove in the slot are pressed together to form an inner seal. At the same time, the outer sealing ring of the insert sleeve near the second connector is pressed together with the inner wall of the outer sealing groove at the first connector to form an outer seal. This connection method can ensure the sealing effect of the connection between the two sleeve bodies. Secondly, by using a second fireproof layer made of ceramic fiber material, the internal structure of the conduit can achieve a preliminary heat insulation and fireproofing effect. The wear-resistant layer on the inner side of the second fireproof layer can prevent friction damage to the second fireproof layer when high-voltage cables are inserted into the conduit. At the same time, the first fireproof layer made of glass fiber material on the outer side of the second fireproof layer can further improve the fire resistance of the conduit. Flame-retardant PVC is used on the outer side of the first fireproof layer, and flame retardants are added to improve its flame-retardant performance. This effectively prevents the conduit from being damaged by fire during the use of high-voltage cables. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of the connecting mechanism of this utility model; Figure 3 This is a schematic diagram of the second connector structure of this utility model; Figure 4 This is a schematic diagram of the fireproof mechanism structure of this utility model.

[0013] Reference numerals: 1. Sleeve body; 2. First connector; 3. Outer sealing groove; 4. Inner sealing groove; 5. Connecting groove; 6. Slot; 7. Reinforcing block; 8. Second connector; 9. Insert sleeve; 10. Rubber plug; 11. Connecting mechanism; 111. Round groove; 112. Square groove; 113. Screw hole; 114. Hexagonal block; 115. Stud; 116. Angled block; 12. Hexagonal groove; 13. Rotating sleeve; 14. Sliding groove; 15. Sliding block; 16. Cover groove; 17. Connecting hole; 18. Connecting block; 19. First mounting groove; 20. Outer sealing ring; 21. Second mounting groove; 22. Inner sealing ring; 23. Fireproof mechanism; 231. Flame retardant layer; 232. First fireproof layer; 233. Second fireproof layer; 234. Wear-resistant layer. Detailed Implementation

[0014] refer to Figures 1 to 4 The UPVC-P high-voltage protection bushing described in this embodiment includes: a bushing body 1, a first connector 2 at the left end of the bushing body 1, a second connector 8 at the right end of the bushing body 1, a fireproof mechanism 23 on the inner side of the bushing body 1, a slot 6 on the inner wall of the first connector 2, an inner sealing groove 4 on the inner wall of the slot 6, an outer sealing groove 3 at the opening of the slot 6, a sleeve 9 fixedly connected to the right end of the second connector 8, an inner sealing ring 22 fixedly connected to the opening of the sleeve 9, an outer sealing ring 20 fixedly connected to the side of the second connector 8 near the sleeve 9, one end of the sleeve 9 passing through the outer sealing ring 20, a connecting groove 5 at an equal angle on the side of the first connector 2 away from the bushing body 1, and a connecting block 18 fixedly connected to the side of the second connector 8 away from the bushing body 1. A connecting hole 17 is provided on the inner side of the connecting block 18, and a connecting mechanism 11 is provided on the inner side of the connecting groove 5. When the two sleeve bodies 1 are connected, the first connecting head 2 slot 6 of one sleeve body 1 and the second connecting head 8 insert sleeve 9 of the other sleeve body 1 are inserted. At the same time, the connecting block 18 on the second connecting head 8 is inserted into the connecting groove 5 of the first connecting head 2. When the connecting mechanism 11 in the connecting groove 5 fixes the connecting hole 17 on the connecting block 18, the inner sealing ring 22 on the insert sleeve 9 is pressed against the inner sealing groove 4 in the slot 6 to form an inner seal. At the same time, the outer sealing ring 20 on the insert sleeve 9 close to the second connecting head 8 is pressed against the inner wall of the outer sealing groove 3 at the first connecting head 2 to form an outer seal. This connection method can ensure the sealing effect of the connection between the two sleeve bodies 1. The connecting mechanism 11 includes a circular groove 111, which is formed at an equal angle on the outer side of the first connector 2. A square groove 112 is formed on the inner side of the connecting groove 5. A screw hole 113 is formed on the inner side of the circular groove 111. The circular groove 111 and the square groove 112 are interconnected through the screw hole 113. A stud 115 is threadedly connected to the inner side of the screw hole 113. A hexagonal block 114 is fixedly connected to one end of the stud 115. A beveled block 116 is rotatably connected to the other end of the stud 115 away from the hexagonal block 114. The beveled block 116 is slidably connected to the inner side of the square groove 112. During the connection of the two sleeve bodies 1, the second connector 8 of one of the sleeve bodies 1 connects to the block 1. 8 is inserted into the first connector 2 of another sleeve body 1 into the connecting groove 5. Then, the hexagonal block 114 in the circular groove 111 is operated by the tool, so that the stud 115 connected to the hexagonal block 114 is threaded and extended in the threaded hole 113. At the same time, the stud 115 rotates and pushes the beveled block 116 to slide inside the square groove 112. The beveled block 116 slides relative to the opening of the connecting hole 17 of the connecting block 18 through the inclined surface. By inserting the beveled block 116 into the connecting hole 17 of the connecting block 18, the second connector 8 and the first connector 2 connected to the connecting block 18 can be tightened and fixed, so that the two sleeve bodies 1 can be quickly connected, assembled and used. The fire-resistant mechanism 23 includes a first fire-resistant layer 232, a second fire-resistant layer 233, a flame-retardant layer 231, and a wear-resistant layer 234. The flame-retardant layer 231 is located inside the sleeve body 1. The first fire-resistant layer 232 is located between the flame-retardant layer 231 and the second fire-resistant layer 233. The inner wall of the second fire-resistant layer 233 is provided with a wear-resistant layer 234. By adding the fire-resistant mechanism 23 inside the sleeve body 1, the second fire-resistant layer 233, made of ceramic fiber material, can first provide preliminary heat insulation and fire protection for the inside of the sleeve body 1. The wear-resistant layer 234 on the inner side of 233 can prevent friction damage to the second fireproof layer 233 when high-voltage cables are inserted into the main body 1 of the bushing. At the same time, the outer side of the second fireproof layer 233 is made of glass fiber material to form the first fireproof layer 232, which can further improve the fire resistance of the main body 1 of the bushing. The outer side of the first fireproof layer 232 is made of flame-retardant PVC and flame retardant is added to improve its flame-retardant performance, thereby effectively preventing the bushing body 1 of other cables from being damaged by fire during the use of high-voltage cables.

[0015] refer to Figure 3 The second connector 8 has a first mounting groove 19 on the side near the sleeve 9. The outer sealing ring 20 is fixedly connected to the inside of the first mounting groove 19. The sleeve 9 has a second mounting groove 21 at the opening. The inner sealing ring 22 is fixedly connected to the inside of the second mounting groove 21. The first mounting groove 19 of the second connector 8 can be used to easily position and fix the outer sealing ring 20. The second mounting groove 21 on the sleeve 9 can be used to easily position and fix the inner sealing ring 22.

[0016] refer to Figure 2 The hexagonal block 114 has a hexagonal groove 12 at the end away from the stud 115. The outer side of the beveled block 116 is fixedly connected to the rotating sleeve 13. The outer wall of the end of the stud 115 away from the hexagonal block 114 is rotatably connected to the inner side of the sleeve opening of the rotating sleeve 13. The hexagonal block 114 can be conveniently used with an internal hexagonal tool. The hexagonal groove 12 on the hexagonal block 114 can increase the operating mode of the hexagonal block 114 and avoid the problem of stripped threads affecting the installation progress. The inner wall of the rotating sleeve 13 is also provided with a ring groove. The lower end of the stud 115 rotates in this limiting ring groove, and the two cannot be separated.

[0017] refer to Figure 2 The outer side of the beveled block 116 is symmetrically provided with a sliding groove 14, and a slider 15 is fixedly installed on the inner side of the square groove 112. One end of the slider 15 is slidably connected to the inner side of the sliding groove 14. By sliding relative to the sliding groove 14 on the beveled block 116 and the slider 15 on the inner side of the square groove 112, the beveled block 116 can be limited.

[0018] refer to Figure 2 A cover groove 16 is provided at the opening of the circular groove 111. A rubber plug 10 is inserted into the inner side of the cover groove 16. The rubber plug 10 inserted into the cover groove 16 is squeezed into the circular groove 111 by the rubber part on the cover body, which can seal the circular groove 111 and prevent the hexagonal block 114 from oxidizing and rusting.

[0019] refer to Figure 1 The first connector 2 and the second connector 8 are fixedly connected to the outer side of the sleeve body 1 at equal angles. The first connector 2 is fixedly connected to the outer wall of the left end of the sleeve body 1 through the reinforcing block 7. The second connector 8 is fixedly connected to the outer wall of the right end of the sleeve body 1 through the reinforcing block 7. By using the reinforcing block 7 on the first connector 2 and the second connector 8 to connect with the corresponding outer wall of the sleeve body 1, the connection strength between the first connector 2 and the second connector 8 and the sleeve body 1 can be further guaranteed.

[0020] Operating principle and advantages: When two sleeve bodies 1 are connected, the first connector 2 slot 6 of one sleeve body 1 is inserted into the second connector 8 sleeve 9 of the other sleeve body 1. At the same time, the connecting block 18 on the second connector 8 is inserted into the connecting groove 5 of the first connector 2. Then, by operating the hexagonal block 114 in the circular groove 111, the stud 115 connected to the hexagonal block 114 is threaded and extended in the threaded hole 113. At the same time, the stud 115 rotates and pushes the beveled block 116 in the square groove 112. The inner side slides, while the beveled block 116 slides relative to the opening of the connecting hole 17 of the connecting block 18 through the beveled surface, so that the beveled block 116 can be inserted into the connecting hole 17 of the connecting block 18 to tighten and fix the second connecting head 8 and the first connecting head 2 connected by the connecting block 18. At this time, the inner sealing ring 22 on the insert 9 and the inner sealing groove 4 in the slot 6 are pressed to form an inner seal. At the same time, the outer sealing ring 20 on the insert 9 near the second connecting head 8 is pressed to the inner wall of the outer sealing groove 3 at the first connecting head 2 to form an outer seal. During use, the rubber plug 10 inserted into the cover groove 16 is used to press the rubber part of the cover body into the circular groove 111, which can seal the circular groove 111 and prevent the hexagonal block 114 from oxidizing and rusting. In addition, since a fireproof mechanism 23 is added to the inside of the sleeve body 1, the second fireproof layer 233 made of ceramic fiber material can provide a preliminary heat insulation and fireproof effect to the inside of the sleeve body 1. The wear-resistant layer 234 inside the second fireproof layer 233 can prevent friction damage to the second fireproof layer 233 when high-voltage cables are inserted into the sleeve body 1. At the same time, the first fireproof layer 232 made of glass fiber material on the outside of the second fireproof layer 233 can further improve the fireproof capability of the sleeve body 1. Flame-retardant PVC is used on the outside of the first fireproof layer 232 and flame retardant is added to improve its flame-retardant performance.

Claims

1. UPVC-P high-voltage power protection bushing, characterized in that... The device includes: a sleeve body; a first connector at the left end of the sleeve body; a second connector at the right end of the sleeve body; a fireproof mechanism on the inner side of the sleeve body; a slot on the inner wall of the first connector; an inner sealing groove on the inner wall of the slot; an outer sealing groove at the opening of the slot; a sleeve fixedly connected to the right end of the second connector; an inner sealing ring fixedly connected to the opening of the sleeve; an outer sealing ring fixedly connected to the side of the second connector near the sleeve; one end of the sleeve passing through the outer sealing ring; a connecting groove at an equal angle on the side of the first connector away from the sleeve body; a connecting block fixedly connected to the side of the second connector away from the sleeve body; a connecting hole on the inner side of the connecting block; and a connecting mechanism on the inner side of the connecting groove. The connecting mechanism includes a circular groove, which is formed at equal angles on the outer side of the first connector. A square groove is formed on the inner side of the connecting groove, and a screw hole is formed on the inner side of the circular groove. The circular groove and the square groove are interconnected through the screw hole. A stud is threadedly connected to the inner side of the screw hole. A hexagonal block is fixedly connected to one end of the stud, and an angled block is rotatably connected to the other end of the stud away from the hexagonal block. The angled block is slidably connected to the inner side of the square groove.

2. The UPVC-P high-voltage protection bushing according to claim 1, characterized in that: The second connector has a first mounting groove on the side near the insert, and the outer sealing ring is fixedly connected to the inside of the first mounting groove. The insert has a second mounting groove at the opening, and the inner sealing ring is fixedly connected to the inside of the second mounting groove.

3. The UPVC-P high-voltage protection bushing according to claim 1, characterized in that: The hexagonal block has a hexagonal groove at the end away from the stud, and a rotating sleeve is fixedly connected to the outer side of the beveled block. The outer wall of the end of the stud away from the hexagonal block is rotatably connected to the inner side of the sleeve opening of the rotating sleeve.

4. The UPVC-P high-voltage protection bushing according to claim 1, characterized in that: The outer side of the beveled block is symmetrically provided with a sliding groove, and a slider is fixedly installed on the inner side of the square groove. One end of the slider is slidably connected to the inner side of the sliding groove.

5. The UPVC-P high-voltage protection bushing according to claim 1, characterized in that: The opening of the circular groove is provided with a cover groove, and a rubber plug is inserted into the inner side of the cover groove.

6. The UPVC-P high-voltage protection bushing according to claim 1, characterized in that: The first connector and the second connector are fixedly connected to a reinforcing block at equal angles. The first connector is fixedly connected to the outer wall of the left end of the sleeve body of the reinforcing block, and the second connector is fixedly connected to the outer wall of the right end of the sleeve body through the reinforcing block.

7. The UPVC-P high-voltage protection bushing according to claim 1, characterized in that: The fireproof mechanism includes a first fireproof layer, a second fireproof layer, a flame-retardant layer, and a wear-resistant layer. The flame-retardant layer is located inside the sleeve body. The first fireproof layer is located between the flame-retardant layer and the second fireproof layer. The inner wall of the second fireproof layer is provided with a wear-resistant layer.

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