Cross-linked polyethylene cable insulation repair liquid injection adapter

Abstract

The utility model relates to the technical field of cable repair, and discloses a crosslinked polyethylene cable insulation repair liquid injection adapter, which comprises a joint piece, a liquid injection pipe is arranged on the back of the joint piece, an injection connecting mechanism is arranged at the top of the joint piece, and a pressure balance assembly is arranged on the surface of the injection connecting mechanism. According to the cross-linked polyethylene cable insulation repair liquid injection adapter, by arranging the pressure balance assembly and arranging the pressure release pipe on the right side of the diaphragm cavity, when repair liquid is injected, if the internal pressure of a cable is increased due to blockage and the like, a diaphragm can be extruded to deform upwards, and the pressure of the lower part of the diaphragm cavity is increased; when the internal pressure of the cable is normal, the pressure balance channel can release part of the pressure into the atmosphere to prevent the repairing liquid from being injected unevenly or damaging the cable due to too high pressure, and when the internal pressure of the cable is normal, the pressure balance channel can maintain weak pressure difference between the lower part of the diaphragm cavity and the atmosphere to ensure that the repairing liquid can be injected continuously and stably, and the stability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable repair technical field, concretely is a kind of crosslinked polyethylene cable insulation repair liquid injection adapter. BACKGROUND

[0002] Crosslinked polyethylene cable has been widely applied in power transmission field by virtue of its excellent electrical performance, mechanical performance and good chemical stability. However, during long-term operation, cable insulation layer will inevitably appear aging, damage and other problems, which affect the safe and stable operation of cable. Using insulation repair liquid to repair crosslinked polyethylene cable becomes an important maintenance means, and the performance of insulation repair liquid injection adapter as a key tool plays a decisive role in repair effect.

[0003] The prior art discloses a crosslinked polyethylene cable adapter based on injection type insulation repair, and relates to the technical field of power cable repair.The crosslinked polyethylene cable adapter based on injection type insulation repair includes a front-end liquid injection pipe, a front-end tower joint, a different-diameter size head, a rear-end tower joint and a rear-end liquid injection pipe; one end of the different-model tower joint is matched and connected with the small head and the large head of the different-diameter size head, and the other end is connected with a liquid injection pipe with appropriate size, so that the adapter of the device can be assembled with the cross-section cable, the repair of aged cable can be realized by injecting air pressure and repair liquid; different cross-section cables can be repaired by replacing the front-end liquid injection pipe, the front-end tower joint, the different-diameter size head, the rear-end tower joint and the rear-end liquid injection pipe with different sizes; the utility model has the advantages of simple structure, quick installation, good sealing property, convenient disassembly, high pressure bearing and suitability for on-site cable repair work.

[0004] The crosslinked polyethylene cable insulation repair liquid injection adapter can realize the repair of different cross-section cables by replacing the front-end liquid injection pipe, the front-end tower joint, the different-diameter size head, the rear-end tower joint and the rear-end liquid injection pipe with different sizes, but the cable insulation repair liquid injection adapter does not have a pressure balance channel, cannot maintain a weak pressure difference between the lower part of the diaphragm cavity and the atmosphere, cannot ensure that the repair liquid can be continuously and stably injected, has poor stability, and has poor effect in use, so it needs to be improved. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a crosslinked polyethylene cable insulation repair liquid injection adapter to solve the problems in the background art.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: a cross -linked polyethylene cable insulation repair liquid injection adapter, connecting piece is provided with liquid injection pipe on the back, the top of connecting piece is provided with injection connection mechanism, the surface of injection connection mechanism is provided with pressure balance component, liquid injection pipe adopts PVC reinforced netted tube, the inner diameter is 32mm, connecting piece adopts 304 stainless steel hexagonal tower joint, the thread of connecting piece is 1.2 inches, the outer diameter of connecting piece 1 is 32mm.

[0007] The pressure balance component includes a diaphragm cavity, an intermediate partition plate, a delivery pipe, a connecting block, a supporting thin rod, a connecting square block, a liquid storage tank, and a pressure release pipe.

[0008] Preferably, the injection connection mechanism includes a hollow telescopic pipe, a connecting pipe, a connecting disc, a hydraulic telescopic rod, a connecting ring, a squeeze type suction cup, and an injection head.

[0009] Preferably, the back of the liquid storage tank is fixedly connected with a liquid supplement pipe, and a threaded groove is formed in the surface of the liquid supplement pipe close to the back.

[0010] Preferably, the back of the liquid supplement pipe is threadedly connected with a sealing cover, and a threadedly connected section is arranged in the inner ring of the sealing ring.

[0011] Preferably, the connecting disc is fixedly connected to the surface of the connecting pipe away from the top of the hollow telescopic pipe.

[0012] Preferably, the shape of the squeeze type suction cup is annular, the inner diameter of the squeeze type suction cup is matched with the diameter of the injection head, the squeeze type suction cup is slidingly connected to the surface of the injection head, the outer surface of the injection head in contact with the cable is covered by the squeeze type suction cup, which can prevent the solution from leaking out during repair and ensure the repair quality, and the squeeze type suction cup can help with connection and sealing to ensure the repair quality.

[0013] Preferably, there are two hydraulic telescopic rods, which are symmetrically distributed on the left and right sides of the bottom of the connecting plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This cross-linked polyethylene cable insulation repair fluid injection adapter is equipped with a pressure balancing component and a pressure relief pipe on the right side of the diaphragm cavity. When the repair fluid is injected, if the internal pressure of the cable increases due to blockage or other reasons, it will squeeze the diaphragm upward and deform it, increasing the pressure in the lower part of the diaphragm cavity. At this time, the pressure balancing channel will release some of the pressure to the atmosphere to prevent uneven injection of the repair fluid or damage to the cable due to excessive pressure. When the internal pressure of the cable is normal, the pressure balancing channel can maintain a slight pressure difference between the lower part of the diaphragm cavity and the atmosphere, ensuring that the repair fluid can be continuously and stably injected, with strong stability.

[0016] 2. This cross-linked polyethylene cable insulation repair fluid injection adapter is equipped with an injection connection mechanism. The injection head is attached to the cable that needs to be repaired. After attachment, the hydraulic telescopic rod can be activated to generate pressure to help the squeeze suction cup adhere to the top of the cable. At this time, the outer surface of the injection head in contact with the cable is covered by the squeeze suction cup, which can prevent the solution from leaking out during repair and ensure the repair quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0018] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0019] Figure 3 This is a three-dimensional structural diagram of the injection connection mechanism of this utility model;

[0020] Figure 4 This utility model Figure 3 Enlarged structural diagram at point B.

[0021] In the diagram: 1. Connector; 2. Injection pipe; 3. Injection connection mechanism; 301. Hollow telescopic pipe; 302. Connecting pipe fitting; 303. Connecting disc; 304. Hydraulic telescopic rod; 305. Connecting ring; 306. Squeezing suction cup; 307. Injection head; 4. Pressure balance assembly; 401. Diaphragm cavity; 402. Intermediate partition plate; 403. Delivery pipe fitting; 404. Connecting block; 405. Support rod; 406. Connecting rectangular block; 407. Liquid storage tank; 408. Pressure relief pipe. Detailed Implementation

[0022] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0023] Please refer to Figures 1-4 The present application provides the following technical solutions:

[0024] The cross-linked polyethylene cable insulation repair liquid injection adapter comprises a joint piece 1, the back surface of the joint piece 1 is provided with a liquid injection pipe 2, the top of the joint piece 1 is provided with an injection connecting mechanism 3, the surface of the injection connecting mechanism 3 is provided with a pressure balance assembly 4, the liquid injection pipe 2 adopts a PVC reinforced net pattern pipe, the inner diameter of which is 32 mm, the joint piece 1 adopts a 304 stainless steel hexagonal tower joint, the thread of the joint piece 1 is 1.2 inches, and the outer diameter of the joint piece 1 is 32 mm.

[0025] The pressure balance assembly 4 comprises a diaphragm cavity 401, an intermediate partition plate 402, a conveying pipe piece 403, a connecting block 404, a supporting thin rod 405, a connecting square block 406, a liquid storage tank 407 and a pressure release pipe 408, the diaphragm cavity 401 is fixedly connected to the inside of the hollow telescopic pipe 301, the intermediate partition plate 402 is connected to the inside of the diaphragm cavity 401, the conveying pipe piece 403 is fixedly connected to the front face of the diaphragm cavity 401 close to the top, the connecting block 404 is fixedly connected to the top of the joint piece 1, the supporting thin rod 405 is fixedly connected to the left side of the connecting block 404, the connecting square block 406 is fixedly connected to the left side of the supporting thin rod 405, the liquid storage tank 407 is fixedly connected to the top of the connecting square block 406, the pressure release pipe 408 is fixedly connected to the right side of the diaphragm cavity 401 close to the bottom, the back surface of the liquid storage tank 407 is fixedly connected with a liquid supplement pipe, a threaded groove is formed in the surface of the liquid supplement pipe close to the back surface, a sealing cover is threadedly connected to the back surface of the liquid supplement pipe, a threaded connecting section is arranged in the inner ring of the sealing ring, and the sealing cover can be sealed in time after liquid supplement, so that waste caused by solution spilling in other places and dirty table surface can be avoided.

[0026] The injection connecting mechanism 3 comprises a hollow telescopic pipe 301, a connecting pipe 302, a connecting disc 303, a hydraulic telescopic rod 304, a connecting ring 305, a squeeze suction cup 306 and an injection head 307. The hollow telescopic pipe 301 is fixedly connected to the top of the joint piece 1. The connecting pipe 302 is fixedly connected to the top of the hollow telescopic pipe 301. The hydraulic telescopic rod 304 is fixedly connected to the bottom of the connecting disc 303. The connecting ring 305 is fixedly connected to the bottom of the hydraulic telescopic rod 304. The squeeze suction cup 306 is fixedly connected to the bottom of the connecting ring 305. The injection head 307 is fixedly connected to the bottom of the connecting pipe 302. The number of the hydraulic telescopic rod 304 is two. The two hydraulic telescopic rods 304 are symmetrically distributed on the left and right sides of the bottom of the connecting disc 303. The connecting disc 303 is fixedly connected to the surface of the connecting pipe 302 away from one end of the top of the hollow telescopic pipe 301. The shape of the squeeze suction cup 306 is annular. The inner diameter of the squeeze suction cup 306 is matched with the diameter of the injection head 307. The squeeze suction cup 306 is slidingly connected to the surface of the injection head 307. The outer surface of the injection head 307 in contact with the cable is covered by the squeeze suction cup 306. The solution can be prevented from leaking out during repair, and the repair quality can be ensured. The setting of the squeeze suction cup 306 can help connection and sealing to ensure the repair quality.

[0027] In use, the hollow telescopic pipe 301 is arranged on the top of the joint piece 1, and the diaphragm cavity 401 is arranged in the hollow telescopic pipe 301. The diaphragm cavity 401 is divided into upper and lower parts by the intermediate partition plate 402. The upper half of the diaphragm cavity 401 is provided with the delivery pipe 403, which is connected with the left liquid storage tank 407. The liquid storage tank 407 is supported and placed on the top of the joint piece 1 through the support thin rod 405 and the connecting block 406. The pressure release pipe 408 is arranged on the right side of the diaphragm cavity 401. One side of the pressure release pipe 408 is in communication with the atmosphere, and the other end is located in the lower part of the diaphragm cavity 401. When the repair liquid is injected, if the internal pressure of the cable rises due to blockage or other reasons, the diaphragm will be deformed upward, causing the pressure in the lower part of the diaphragm cavity to increase. At this time, the pressure balance channel will release part of the pressure to the atmosphere, preventing the repair liquid from being unevenly injected or causing damage to the cable due to excessive pressure. When the internal pressure of the cable is normal, the pressure balance channel can maintain a weak pressure difference between the lower part of the diaphragm cavity and the atmosphere, ensuring that the repair liquid can be continuously and stably injected, with strong stability. The injection connecting mechanism 3 is arranged on the top of the joint piece 1. The injection head 307 can be attached to the cable that needs to be repaired. After attachment, the hydraulic telescopic rod 304 can be started to drive the connecting ring 305 and the injection head 307 to move downward until the injection head 307 is attached to the top of the cable. Then the generated pressure is continued to start to help the squeeze suction cup 306 to be adsorbed on the top of the cable. At this time, the outer surface of the injection head 307 in contact with the cable is covered by the squeeze suction cup 306, which can prevent the solution from leaking out during repair and ensure the repair quality.

[0028] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cross-linked polyethylene cable insulation repair fluid injection adapter, comprising a connector (1), characterized in that: The back of the connector (1) is provided with an injection tube (2), the top of the connector (1) is provided with an injection connection mechanism (3), and the surface of the injection connection mechanism (3) is provided with a pressure balancing component (4). The pressure balancing assembly (4) includes a diaphragm cavity (401), an intermediate partition plate (402), a delivery pipe (403), a connecting block (404), a supporting rod (405), a connecting rectangular block (406), a storage tank (407), and a pressure relief pipe (408). The diaphragm cavity (401) is fixedly connected to the inside of the hollow telescopic tube (301), the intermediate partition plate (402) is connected to the inside of the diaphragm cavity (401), and the delivery pipe (403) is fixedly connected to the inside of the hollow telescopic tube (301). The connecting block (404) is fixedly connected to the top of the connector (1) on the front side of the diaphragm cavity (401), the supporting rod (405) is fixedly connected to the left side of the connecting block (404), the connecting rectangular block (406) is fixedly connected to the left side of the supporting rod (405), the liquid storage tank (407) is fixedly connected to the top of the connecting rectangular block (406), and the pressure relief pipe (408) is fixedly connected to the right side of the diaphragm cavity (401) near the bottom.

2. The cross-linked polyethylene cable insulation repair fluid injection adapter according to claim 1, characterized in that: The injection connection mechanism (3) includes a hollow telescopic tube (301), a connecting pipe (302), a connecting plate (303), a hydraulic telescopic rod (304), a connecting ring (305), a squeezing suction cup (306), and an injection head (307). The hollow telescopic tube (301) is fixedly connected to the top of the connector (1), the connecting pipe (302) is fixedly connected to the top of the hollow telescopic tube (301), the hydraulic telescopic rod (304) is fixedly connected to the bottom of the connecting plate (303), the connecting ring (305) is fixedly connected to the bottom of the hydraulic telescopic rod (304), the squeezing suction cup (306) is fixedly connected to the bottom of the connecting ring (305), and the injection head (307) is fixedly connected to the bottom of the connecting pipe (302).

3. The cross-linked polyethylene cable insulation repair fluid injection adapter according to claim 1, characterized in that: The back of the liquid storage tank (407) is fixedly connected to a liquid replenishment pipe, and the surface of the liquid replenishment pipe is provided with a threaded groove near the back.

4. The cross-linked polyethylene cable insulation repair fluid injection adapter according to claim 3, characterized in that: The back of the replenishment tube is threaded with a sealing cap, and the inner ring of the sealing ring has a threaded connection section.

5. The cross-linked polyethylene cable insulation repair fluid injection adapter according to claim 2, characterized in that: The connecting disc (303) is fixedly connected to the end of the connecting pipe fitting (302) away from the top of the hollow telescopic pipe (301).

6. The cross-linked polyethylene cable insulation repair fluid injection adapter according to claim 2, characterized in that: The extrusion suction cup (306) is annular in shape, and its inner diameter is adapted to the diameter of the injection head (307). The extrusion suction cup (306) is slidably connected to the surface of the injection head (307).

7. The cross-linked polyethylene cable insulation repair fluid injection adapter according to claim 2, characterized in that: There are two hydraulic telescopic rods (304), which are symmetrically distributed on the left and right sides of the bottom of the connecting plate (303).

8. The cross-linked polyethylene cable insulation repair fluid injection adapter according to claim 2, characterized in that: The injection tube (2) is made of PVC reinforced mesh tube with an inner diameter of 32mm.

9. The cross-linked polyethylene cable insulation repair fluid injection adapter according to claim 2, characterized in that: The connector (1) is a 304 stainless steel hexagonal pagoda connector.

10. The cross-linked polyethylene cable insulation repair fluid injection adapter according to claim 2, characterized in that: The thread of the connector (1) is 1.2 inches, and the outer diameter of the connector (1) is 32 mm.

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