Cable intermediate joint degassing device and use method

Abstract

The invention relates to the technical field of degasser, and discloses a cable intermediate joint degasser and a use method, the cable intermediate joint degasser comprises a cable, and also comprises: a body part, the body part is installed at the rear side of the cable; the number of the extrusion parts is two, and the two extrusion parts are both arranged on the cable; the number of the fixing parts is two, and the two fixing parts are both installed on the extrusion part; the mounting part is arranged on the body part; the extrusion part comprises a sliding assembly, and the sliding assembly is installed on the cable; the approaching assembly is arranged on the cable; the sliding assembly comprises a second fixing ring arranged on the outer wall of the cable. Through the arrangement of the extrusion part, the problems that in the using process of an existing degassing device, the existing degassing device can only adapt to cables with specific diameters, fixing parts of corresponding models need to be replaced when the existing degassing device faces cables of different specifications, the universality is extremely poor, and the equipment investment and construction complexity is increased are solved.

Description

Technical Field

[0001] This invention relates to the field of degassing devices, specifically to a cable intermediate joint degassing device and its usage method. Background Technology

[0002] In power transmission networks, cable joints are core connecting components for long-distance cable lines. Their insulation performance and sealing reliability directly determine the stability and safety of the line operation. With the widespread application of medium- and high-voltage and ultra-high-voltage cables in urban distribution networks and cross-regional power transmission, the requirements for insulation quality in joint manufacturing processes are becoming increasingly stringent. During the cross-linking reaction between the insulation material and the conductor core of the cable joint, volatile byproducts such as cumyl alcohol and acetophenone are inevitably generated. At the same time, in the construction stages such as conductor crimping and insulation layer filling, small air gaps and residual moisture are easily introduced due to process deviations. These residual substances and air gaps will seriously disrupt the uniform distribution of the electric field inside the joint, leading to local field strength distortion, the maximum value of which can be 4-5 times that of the defect-free area. This can then cause partial discharge, dendritic aging, and ultimately insulation breakdown. According to statistics, such faults caused by joint defects account for more than 70% of all cable accidents.

[0003] However, existing degassing devices can only be used with cables of a specific diameter. When dealing with cables of different specifications, it is necessary to replace the corresponding fixing parts, which has extremely poor versatility and increases the investment in equipment and the complexity of construction. Summary of the Invention

[0004] The purpose of this invention is to provide a cable intermediate joint degassing device and its usage method. By setting up a squeezing part, it solves the problem that existing degassing devices can only be used with cables of a specific diameter. When dealing with cables of different specifications, it is necessary to replace the corresponding model of the fixing parts, resulting in extremely poor versatility and increased equipment investment and construction complexity.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a cable joint degassing device and its usage method, comprising a cable, and further comprising: a body portion mounted on the rear side of the cable; two extrusion portions, both mounted on the cable; two fixing portions, both mounted on the extrusion portions; and an mounting portion mounted on the body portion. Each extrusion portion includes a sliding assembly mounted on the cable; and a proximity assembly mounted on the cable. The sliding assembly includes a second fixing ring disposed on the outer wall of the cable, the second fixing ring having several grooves, each groove having a sliding rod slidably connected to its inner wall, and each sliding rod having an extrusion block fixedly connected to its side near the cable. Both the first and second fixing rings are in two segments, hinged together at their bottoms by a hinge block, and the second fixing ring is fixedly connected to the first fixing ring.

[0006] Furthermore, the main body includes a degassing device disposed on the rear side of the cable, a joint is provided on the outer wall of the cable, and a fixing ring is sleeved on the outer wall of the cable.

[0007] Furthermore, the fixing part includes a limiting component disposed on the extrusion part; and a reset component mounted on the limiting component, with the extrusion parts mounted together through the fixing part.

[0008] Furthermore, the mounting part includes a third fixed ring disposed on a first fixed ring, the third fixed ring extending into the first fixed ring, a limiting ring fixedly connected to the outer wall of the first fixed ring, a sliding ring slidably connected to the outer wall of the limiting ring, a plurality of limiting balls disposed within the sliding ring, the limiting balls extending outside the limiting ring, the limiting balls being adapted to the third fixed ring, a second spring disposed on the outer wall of the limiting ring, the bottom of the second spring being fixedly connected to the first fixed ring, the top of the second spring being fixedly connected to the sliding ring, a connecting member disposed on the third fixed ring, a limiting groove disposed on the third fixed ring, the limiting balls extending into the limiting groove, the connecting member including a connecting pipe fixedly connected to the inner wall of the third fixed ring, the connecting pipe communicating with a degassing device, and the connecting pipe communicating with a connector.

[0009] Furthermore, the proximity component includes a compression ring disposed on the outer wall of the cable, the compression ring having a plurality of bidirectional threaded rods threadedly connected thereto, and a handle fixedly connected to the right side of the plurality of bidirectional threaded rods, the bidirectional threaded rods being provided in three in a circumferential array.

[0010] Furthermore, the limiting component includes a hollow rod fixedly connected to the left side of the second fixing ring, a pin fixedly connected to the right side of the second fixing ring, the pin extending to the hollow rod, a limiting rod penetrating both the hollow rod and the pin, a first fixing plate fixedly connected to the right side of the hollow rod, the limiting rod penetrating the first fixing plate, and the limiting rod being U-shaped.

[0011] Furthermore, the reset assembly includes a fixing plate two fixedly connected to the top of the limiting rod, and a spring one sleeved on the outer wall of the limiting rod. The bottom of the spring one is fixedly connected to the fixing plate one, and the top of the spring one is fixedly connected to the fixing plate two. The initial state of the spring one is a compressed state.

[0012] The present invention has the following beneficial effects: 1. This invention uses an extrusion section to drive a bidirectional threaded rod to rotate synchronously by rotating the handle. The transmission characteristics of the bidirectional thread drive the two extrusion rings to move closer to each other along the axial direction of the threaded rod. During the approach process, the extrusion rings apply a radial inward thrust to the extrusion blocks, causing the slide bar to slide directionally along the slide groove. This, in turn, drives multiple extrusion blocks to converge synchronously towards the center in the circumferential direction, ultimately making close contact with the cable surface. This achieves mechanical fixation between the fixing ring and the cable, and can be adapted to cables of different diameters. It can also prevent excessive local pressure from damaging the cable insulation layer.

[0013] 2. This invention utilizes a fixing mechanism. During installation, the segmented fixing rings one and two are first fitted onto the corresponding positions on the cable. Then, the two fixing rings are spliced ​​and fixed through the cooperation of the pin and the hollow rod. Squeezing the fixing plate two drives the limiting component to move, causing the two limiting rods to move away from each other. During this process, the limiting rods squeeze the spring one and disengage from the limiting holes of the hollow rod and the pin. Subsequently, the pin is inserted into the hollow rod to complete the splicing and positioning. After releasing the fixing plate two, the spring one releases its elastic potential energy to push the limiting rods back to their original position and re-engage into the corresponding limiting structure of the hollow rod and the pin, achieving locking and fixing of both. Finally, the installation of fixing ring two on the cable is completed without having to thread it through the cable end. This invention is suitable for fixing cable joints in already laid or intermediate sections, greatly improving installation flexibility.

[0014] 3. In this invention, when installing the connecting pipe and the fixing ring three, the sliding ring on the outside of the limiting ring is first pulled down. During the downward movement of the sliding ring, the spring two is compressed and deformed, while the lateral compression on the limiting ball is released. The limiting ball slides out from the inner limiting hole of the limiting ring. Then, the connecting end of the fixing ring three and the connecting pipe is aligned with the installation interface of the limiting ring and inserted into place. After the sliding ring is released, the spring two releases its elastic potential energy, pushing the sliding ring to reset axially upward. The inner inclined surface of the reset sliding ring re-compresses the limiting ball, pushing it back into the inner limiting hole of the limiting ring. The limiting ball engages with the limiting groove or stepped structure on the surface of the fixing ring three, realizing the axial limiting of the fixing ring three and the connecting pipe, and completing the overall installation. Installation and disassembly can be completed by simply pulling and releasing the sliding ring. The operation steps are extremely simple, requiring no bolt tightening or additional tools, greatly improving assembly efficiency.

[0015] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial cross-sectional view of the fixing part of the present invention; Figure 3 This is a partial cross-sectional view of the connector of the present invention; Figure 4 This is a partial structural diagram of the present invention near the component; Figure 5 This is a partial cross-sectional view of the slide groove of the present invention; Figure 6 This is a partial cross-sectional view of the limiting rod of the present invention; Figure 7 For the present invention Figure 2 A magnified structural diagram of A in the middle; Figure 8 For the present invention Figure 3 A magnified structural diagram of B in the diagram.

[0018] The attached diagram lists the components represented by each number as follows: In the diagram: 1. Main body; 111. Cable; 112. Degassing device; 113. Connector; 114. Fixing ring one; 2. Extrusion part; 21. Sliding assembly; 211. Fixing ring two; 212. Slide groove; 213. Slide rod; 214. Extrusion block; 22. Proximity assembly; 221. Extrusion ring; 222. Bidirectional threaded rod; 223. Handle; 3. Fixing part; 31. Limiting assembly; 311. Hollow rod; 312. Pin; 313. Limiting rod; 314. Fixing plate one; 32. Reset assembly; 321. Fixing plate two; 322. Spring one; 4. Mounting part; 411. Fixing ring three; 412. Limiting ring; 413. Sliding ring; 414. Limiting ball; 415. Spring two; 416. Connecting pipe. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1 - Figure 8 As shown, the present invention is a degassing device and method for using a cable intermediate joint, including a cable 111, and further including: a body part 1, which is installed on the rear side of the cable 111; two extrusion parts 2, both of which are provided on the cable 111; two fixing parts 3, both of which are installed on the extrusion parts 2; and a mounting part 4, which is provided on the body part 1; the body part 1 includes a degassing device 112 provided on the rear side of the cable 111, a joint 113 provided on the outer wall of the cable 111, and a fixing ring 114 sleeved on the outer wall of the cable 111; The extrusion section 2 includes a sliding assembly 21, which is mounted on the cable 111; and a proximity assembly 22, which is also mounted on the cable 111. The sliding assembly 21 includes a second fixing ring 211 disposed on the outer wall of the cable 111. The second fixing ring 211 has several grooves 212, and each groove 212 has a sliding rod 213 slidably connected to its inner wall. Each sliding rod 213 has an extrusion block 214 fixedly connected to one side of its proximity to the cable 111. Both the first fixing ring 114 and the second fixing ring 211 are in two segments, with their bottoms hinged to one segment via a hinge block. Starting from the fixed ring 211, the fixed ring 114 is fixedly connected to the fixed ring 22. Near the component 22, there is a compression ring 221 set on the outer wall of the cable 111. Several bidirectional threaded rods 222 are threadedly connected to the compression ring 221. A handle 223 is fixedly connected to the right side of the several bidirectional threaded rods 222. There are three bidirectional threaded rods 222, which are arranged in a circumferential array. By setting the compression part 2, the fixed ring 211 and the cable 111 are mechanically fixed. It can adapt to cables 111 of different diameters and can avoid damage to the cable insulation layer due to excessive local pressure.

[0021] The fixing part 3 includes a limiting component 31, which is disposed on the extrusion part 2; and a resetting component 32, which is mounted on the limiting component 31. The extrusion part 2 is mounted together through the fixing part 3. The limiting component 31 includes a hollow rod 311 fixedly connected to the left side of the fixing ring 211, and a pin 312 fixedly connected to the right side of the fixing ring 211. The pin 312 extends to the hollow rod 311, and a limiting rod 313 passes through both the hollow rod 311 and the pin 312. A fixing plate 314 is fixedly connected to the right side of the hollow rod 311, and the limiting rod 313 passes through the fixing plate 314. The U-shaped reset assembly 32 includes a fixing plate 321 fixedly connected to the top of the limiting rod 313. A spring 322 is sleeved on the outer wall of the limiting rod 313. The bottom of the spring 322 is fixedly connected to the fixing plate 314, and the top of the spring 322 is fixedly connected to the fixing plate 321. The initial state of the spring 322 is a compressed state. By setting the fixing part 3, the two are locked and fixed, and finally the installation of the fixing ring 211 on the cable 111 is completed. The installation can be completed without passing it through the cable end. It is suitable for fixing scenarios of cable joints that have been laid or are in the middle, and the installation flexibility is greatly improved.

[0022] Mounting part 4 includes a third fixing ring 411 disposed on a first fixing ring 114. The third fixing ring 411 extends into the first fixing ring 114. A limiting ring 412 is fixedly connected to the outer wall of the first fixing ring 114. A sliding ring 413 is slidably connected to the outer wall of the limiting ring 412. A plurality of limiting balls 414 are disposed inside the sliding ring 413. The limiting balls 414 extend outside the limiting ring 412 and are adapted to the third fixing ring 411. A second spring 415 is disposed on the outer wall of the limiting ring 412. The bottom of the second spring 415 is fixedly connected to the first fixing ring 114, and the top of the second spring 415 is connected to the sliding ring 413. The fixed connection includes a connecting member on the fixed ring 411 and a limiting groove on the fixed ring 411. The limiting ball 414 extends into the limiting groove. The connecting member includes a connecting pipe 416 fixedly connected to the inner wall of the fixed ring 411. The connecting pipe 416 is connected to the degassing device 112 and the connector 113. By setting the mounting part 4, the axial positioning of the fixed ring 411 and the connecting pipe 416 is achieved, and the overall installation is completed. Installation and disassembly can be completed by simply pulling and releasing the sliding ring. The operation steps are extremely simple, and no bolt tightening or additional tools are required, which greatly improves the assembly efficiency.

[0023] It should be noted that the degassing device 112 in this application can be controlled by using a program set in the control panel, and inputting relevant parameters as needed for automated control. This control method can be achieved using existing technologies, such as PLC.

[0024] In use, first install the compression part 2 onto the cable 111. During installation, separate the first fixing ring 114 and the second fixing ring 211 into two sections. Then, fit the first fixing ring 114 and the second fixing ring 211 onto the cable 111. Next, insert the pin 312 into the hollow rod 311. When inserting, pinch the second fixing plate 321. At this time, the limiting component 31 will move the two limiting rods 313 away from each other. When the limiting rods 313 move, they will compress the two springs 322. As the movement progresses, the limiting rods 313 will... After disengaging the hollow rod 311 and pin 312, the pin 312 can be inserted into the hollow rod 311. Then, the fixing plate 221 is released, and the spring 1 322 will return to its original position along with the limiting rod 313. After returning to its original position, the hollow rod 311 and pin 312 can be fixed together, thus achieving the installation of the fixing ring 211. After installation, turning the handle 223 will cause the bidirectional threaded rod 222 to bring the two compression rings 221 closer together. As they approach each other... The compression block 214 will be pushed inward. As the compression block 214 moves, the slide bar 213 will slide within the slide groove 212. As it slides, the compression blocks 214 will move closer together and come into contact with the cable 111. This achieves the effect of fixing the second fixing ring 211 to the cable 111. Then, the connecting pipe 416 is installed on the limiting ring 412. During installation, first pull down the sliding ring 413. At this time, the sliding ring 413 will compress the second spring 4. 15. As the sliding ring 413 moves, the limiting ball 414 will slide out from the limiting ring 412. Then, the fixing ring 411 and the connecting tube 416 are inserted into the limiting ring 412. Then, the sliding ring 413 is released. At this time, the spring 415 will push the sliding ring 413 upward to reset. When the sliding ring 413 resets, it will squeeze the limiting ball 414 back into the limiting ring 412 and limit the fixing ring 411. Thus, the installation effect of the fixing ring 411 and the connecting tube 416 can be achieved.

[0025] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention 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 invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A cable joint degassing device and its usage method, comprising a cable (111), characterized in that, Also includes: Body part (1), said body part (1) is installed on the rear side of cable (111); Extrusion section (2), two extrusion sections (2) are provided, and both extrusion sections (2) are provided on the cable (111); Two fixing parts (3) are provided, and both fixing parts (3) are installed on the extrusion part (2); Mounting part (4), which is provided on the main body part (1); The extrusion section (2) includes a sliding assembly (21) mounted on the cable (111); as well as Proximity component (22), which is disposed on cable (111); The sliding assembly (21) includes a fixing ring two (211) disposed on the outer wall of the cable (111), the fixing ring two (211) having a plurality of sliding grooves (212), the inner walls of the plurality of sliding grooves (212) being slidably connected to sliding rods (213), and the sides of the plurality of sliding rods (213) near the cable (111) being fixedly connected to pressing blocks (214). Among them, the first fixed ring (114) and the second fixed ring (211) are both in two segments, and their bottoms are hinged together by a hinge block. The second fixed ring (211) is fixedly connected to the first fixed ring (114).

2. The cable intermediate joint degassing device and its usage method according to claim 1, characterized in that, The main body (1) includes a degassing device (112) disposed on the rear side of the cable (111), a connector (113) is provided on the outer wall of the cable (111), and a fixing ring (114) is sleeved on the outer wall of the cable (111).

3. The cable intermediate joint degassing device and its usage method according to claim 2, characterized in that, The fixing part (3) includes a limiting component (31), which is disposed on the extrusion part (2); and A reset assembly (32) is mounted on a limiting assembly (31); The extrusion part (2) is installed together with the fixing part (3).

4. The cable intermediate joint degassing device and its usage method according to claim 3, characterized in that, The mounting part (4) includes a fixing ring three (411) disposed on a fixing ring one (114). The fixing ring three (411) extends into the fixing ring one (114). A limiting ring (412) is fixedly connected to the outer wall of the fixing ring one (114). A sliding ring (413) is slidably connected to the outer wall of the limiting ring (412). A plurality of limiting balls (414) are disposed in the sliding ring (413). The limiting balls (414) extend outside the limiting ring (412). The limiting balls (414) are adapted to the fixing ring three (411). A spring two (415) is disposed on the outer wall of the limiting ring (412). The bottom of the spring two (415) is fixedly connected to the fixing ring one (114). The top of the spring two (415) is fixedly connected to the sliding ring (413). A connecting member is disposed on the fixing ring three (411). Among them, a limiting groove is provided on the fixed ring three (411), and the limiting ball (414) extends into the limiting groove.

5. The cable intermediate joint degassing device and its method of use according to claim 4, characterized in that, The proximity component (22) includes a compression ring (221) disposed on the outer wall of the cable (111), and a plurality of bidirectional threaded rods (222) are threadedly connected to the compression ring (221), and a handle (223) is fixedly connected to the right side of the plurality of bidirectional threaded rods (222). Among them, three bidirectional threaded rods (222) are provided and are distributed in a circumferential array.

6. The cable intermediate joint degassing device and its method of use according to claim 5, characterized in that, The limiting component (31) includes a hollow rod (311) fixedly connected to the left side of the second fixing ring (211), a pin (312) fixedly connected to the right side of the second fixing ring (211), the pin (312) extending to the hollow rod (311), a limiting rod (313) passing through both the hollow rod (311) and the pin (312), a fixing plate (314) fixedly connected to the right side of the hollow rod (311), and the limiting rod (313) passing through the fixing plate (314). The limiting rod (313) is U-shaped.

7. The cable intermediate joint degassing device and its method of use according to claim 6, characterized in that, The reset assembly (32) includes a fixing plate two (321) fixedly connected to the top of the limiting rod (313), and a spring one (322) is sleeved on the outer wall of the limiting rod (313). The bottom of the spring one (322) is fixedly connected to the fixing plate one (314), and the top of the spring one (322) is fixedly connected to the fixing plate two (321). Among them, the initial state of spring 1 (322) is the compressed state.

8. The cable intermediate joint degassing device and its method of use according to claim 7, characterized in that, The connecting component includes a connecting pipe (416) fixedly connected to the inner wall of the fixed ring three (411), and the connecting pipe (416) is connected to the degassing device (112); The connecting pipe (416) is connected to the connector (113).

9. A method of using a cable joint degassing device, applicable to a cable joint degassing device as described in claim 8, characterized in that, Includes the following steps: S1: First, install the extrusion part (2) on the cable (111). During installation, divide the first fixing ring (114) and the second fixing ring (211) into two sections. Then, put the first fixing ring (114) and the second fixing ring (211) on the cable (111). Then, insert the pin (312) into the hollow rod (311). When inserting, pinch the second fixing plate (321). At this time, the limiting component (31) will move the two limiting rods (313) away from each other. When the limiting rods (313) move, they will... When the two springs (322) are compressed, the moving limit rod (313) will disengage from the hollow rod (311) and the pin (312). At this time, the pin (312) can be inserted into the hollow rod (311). Then the fixing plate (321) is released. At this time, the spring (322) will reset with the limit rod (313). After the reset, the hollow rod (311) and the pin (312) can be fixed together, thereby achieving the effect of installing the fixing ring (211). S2: After installation, turn the handle (223). At this time, the double-threaded rod (222) will bring the two compression rings (221) closer to each other. As they get closer, they will push the compression block (214) inward. As the compression block (214) moves, the slide bar (213) will slide in the groove (212). As it slides, the compression blocks (214) will get closer to each other. As they get closer, the compression blocks (214) will come into contact with the cable (111). This will achieve the effect of fixing the second fixing ring (211) to the cable (111). S3: Then install the connecting pipe (416) on the limiting ring (412). During installation, first pull down the sliding ring (413). At this time, the sliding ring (413) will press down on the second spring (415). As the sliding ring (413) moves, the limiting ball (414) will slide out from the limiting ring (412). Then insert the third fixing ring (411) and the connecting pipe (416) into the limiting ring (412). Then release the sliding ring (413). At this time, the second spring (415) will push the sliding ring (413) back up. When the sliding ring (413) returns to its original position, it will press the limiting ball (414) back into the limiting ring (412) and limit the third fixing ring (411). This achieves the effect of installing the third fixing ring (411) and the connecting pipe (416).

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