A tensile high temperature resistant crosslinked polyethylene cable

Abstract

The application relates to the technical field of crosslinked polyethylene cables, and discloses a tensile and high-temperature-resistant crosslinked polyethylene cable, which comprises a conductor, the outer part of the conductor is wrapped with a crosslinked polyethylene insulation layer, the outer part of the crosslinked polyethylene insulation layer is provided with an inner protective layer, an armored layer and an outer sheath, and the cable further comprises cooling rings, a communication pipe and hanging rings; the cooling rings are detachably arranged on the outer side of the outer sheath, the inner part of each cooling ring is provided with an annular cooling cavity, the annular cooling cavity is filled with a cooling medium, cooling fins are fixedly arranged on the cooling ring, the two ends of each cooling ring are communicated with communication seats, the communication pipe is detachably connected with the communication seats through quick-connection communication pieces, the quick-connection communication pieces can block the communication seats, the hanging rings are fixedly arranged on the outer part of the cooling rings, and the two hanging rings corresponding in position on two adjacent cooling rings are detachably provided with a chain. Through the technical scheme, the problem that the tensile and high-temperature-resistant performance of the cable is limited in the prior art is solved.

Description

Technical Field

[0001] This invention relates to the field of cross-linked polyethylene cable technology, and more specifically, to a high-temperature resistant, tensile-strength cross-linked polyethylene cable. Background Technology

[0002] Cross-linked polyethylene (XLPE) cables are widely used in power transmission due to their excellent electrical insulation, heat resistance, and mechanical strength. Their long-term operating temperature can reach 90℃, and their short-circuit transient temperature can reach 250℃. With the surge in power load and the increasing complexity of application environments, such as in dense laying, cable trenches, or other high-temperature environments, the thermal aging of the XLPE insulation layer is accelerated. In some cases, insulation breakdown may even occur due to thermo-oxidative aging or thermo-mechanical stress. In laying environments such as areas with terrain subsidence, the cable is also subjected to axial tensile force for a long time. Tensile force can cause conductor deformation, local thinning of the insulation layer, or even conductor breakage. Although ordinary XLPE cables have a certain tensile strength, they mainly rely on the conductor itself and are difficult to cope with continuous high tension. Traditional cable cooling solutions, such as increasing the cross-sectional area of ​​the cable to improve the heat exchange effect between the cable and the outside, have limited effectiveness and are difficult to achieve long-term stable operation under complex working conditions. Summary of the Invention

[0003] This invention proposes a high-tensile and high-temperature resistant cross-linked polyethylene cable to solve the problem that the tensile strength and high-temperature resistance of cables in the prior art are relatively limited.

[0004] The technical solution of the present invention is as follows:

[0005] A high-temperature resistant, tensile-strength cross-linked polyethylene cable includes a conductor, an outer layer of cross-linked polyethylene insulation, an inner sheath surrounding the cross-linked polyethylene insulation, an armor layer surrounding the inner sheath, and an outer sheath surrounding the armor layer. The cable also includes:

[0006] A cooling ring is detachably mounted on the outside of the outer sheath. An annular cooling cavity is formed inside the cooling ring, and the annular cooling cavity is filled with a cooling medium. Heat sinks are fixedly mounted on the cooling ring.

[0007] The connecting pipe has connecting seats at both ends of the cooling ring. The connecting pipe and the connecting seats are detachably connected by quick-connect fittings for the circulation of cooling medium. The quick-connect fittings can seal the connecting seats.

[0008] The hanging ring is fixedly installed on the outside of the cooling ring, and a chain can be detachably installed between two hanging rings at corresponding positions on two adjacent cooling rings.

[0009] Preferably, the quick-connector includes:

[0010] A plug, one end of which is fixedly connected to the connecting tube, and the other end of which is inserted into the interior of the connecting socket; the end of the plug has a through hole.

[0011] A blocking block is slidably disposed inside the connecting seat by means of an elastic element. The blocking block blocks the connecting seat under the action of the elastic element. When the plug is inserted into the connecting seat, the blocking block is pushed open, and the cooling medium can flow.

[0012] An installation component, disposed on the plug, is used to install the plug onto the communication socket. The installation component includes:

[0013] A retaining plate, wherein the retaining plate is mounted on the plug via a spring-loaded component, and a retaining block is fixedly connected to the retaining plate;

[0014] A retaining ring is fixedly disposed on the outside of the connecting seat. When the plug is inserted into the inside of the connecting seat, the locking block is pressed against the end of the retaining ring by the action of the spring-loaded member to fix the plug.

[0015] A locking element, disposed on the plug, for auxiliary locking of the locking plate, the locking element comprising:

[0016] A locking ring is slidably disposed outside the plug. The locking ring moves axially along the plug. The inner wall of the locking ring fits against the outer side of the retaining plate to restrict the position of the retaining plate.

[0017] To enable the cooling ring to be detachable, the cooling ring includes:

[0018] The cooling half-ring is provided in two parts, and the two cooling half-rings can be spliced ​​together to form a complete ring;

[0019] A connecting block is fixedly installed at one end of the cooling half-ring, and a connecting groove matching the connecting block is opened at the other end of the cooling half-ring. The connecting block is detachably installed inside the connecting groove by connecting bolts.

[0020] Preferably, the elastic element includes:

[0021] A fixing plate is fixedly disposed inside the connecting seat;

[0022] A sliding rod is fixedly connected to the sealing block, and the sliding rod and the fixing plate are in sliding fit.

[0023] A compression spring is disposed between the sealing block and the fixing plate.

[0024] Preferably, the springback element includes:

[0025] A fixing cylinder is fixedly disposed on the outside of the plug;

[0026] The movable rod has a movable groove on the fixed cylinder that matches the movable rod, and a rebound spring is provided between the inner wall of the movable rod and the movable groove.

[0027] To ensure stability between the locking ring and the clamping plate, an anti-slip pad is fixedly provided on the outer side of the clamping plate, and the anti-slip pad is in contact with the inner sidewall of the locking ring.

[0028] To improve the cooling effect on the cable, an auxiliary cooling component is also included. This auxiliary cooling component is detachably mounted on the connecting pipe and contacts the outer sheath to provide auxiliary cooling to the outer sheath. The auxiliary cooling component includes:

[0029] A retaining ring, which is snapped onto the outside of the connecting pipe, and has an opening on it;

[0030] A heat-conducting sheet is fixedly connected to the retaining ring, and the heat-conducting sheet is in contact with the outer side of the outer sheath.

[0031] The working principle and beneficial effects of this invention are as follows:

[0032] 1. In this invention, a cooling ring is detachably installed on the outside of the outer sheath, and a circulating cooling medium is formed by using a connecting pipe. The cooling medium can absorb the heat generated by the cable operation and quickly dissipate it to the external environment through the heat sink, thereby reducing the working temperature of the cable and reducing insulation breakdown caused by high temperature. This greatly improves the high temperature resistance and long-term operational stability of the cable in dense laying or high temperature environments.

[0033] 2. In this invention, by fixing hanging rings on the outside of the cooling rings and detachably connecting chains between corresponding hanging rings of adjacent cooling rings, auxiliary force is provided to the outside of the cable. When the cable is subjected to axial tension, the chains can preferentially bear and share most of the tension, effectively protecting the internal conductor, insulation layer and armor layer, reducing problems such as conductor deformation, local thinning of the insulation layer or breakage of the shielding layer. The chains can be bent and the connecting pipe is a flexible tube, which not only ensures the flexibility of cable laying, but also significantly improves the overall tensile strength of the cable when laid in complex terrain.

[0034] 3. In this invention, the cooling ring adopts a structure of two interlocking cooling half-rings, and quick disassembly and assembly are achieved through connecting bolts, which facilitates the replacement of a single damaged cooling ring. Through the cooperation of components such as plug, sealing block and locking block, quick disassembly and assembly between the connecting pipe and the cooling ring are realized. When the plug is inserted, the cooling medium passage is automatically opened. When it is pulled out, the sealing block automatically seals the connecting seat, reducing the leakage of cooling medium and reducing the difficulty and cost of installation and maintenance. Attached Figure Description

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0036] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0037] Figure 2 This is a side view of the planar structure of the present invention;

[0038] Figure 3 This is a schematic diagram of the structure of the connecting seat, connecting pipe, cooling ring and auxiliary cooling component of the present invention;

[0039] Figure 4 This is a schematic diagram of the cooling ring, chain, auxiliary cooling component, and quick-connect connector of the present invention;

[0040] Figure 5 This is a schematic diagram of the structure of the connecting seat, sealing block, fixing ring and elastic element of the present invention;

[0041] Figure 6 This is a schematic diagram of the structure of the plug, sealing ring, retaining plate and locking element of the present invention;

[0042] Figure 7 This is a schematic diagram of the structure of the connecting seat, connecting pipe and quick-connecting component of the present invention;

[0043] Figure 8 For the present invention Figure 3 A magnified schematic diagram of the partial structure at point A in the middle;

[0044] Figure 9 For the present invention Figure 6 A magnified schematic diagram of the structure at point A in the middle.

[0045] In the picture:

[0046] 1. Conductor; 2. Cross-linked polyethylene insulation layer; 3. Inner sheath; 4. Armor layer; 5. Outer sheath; 6. Heat sink; 7. Connecting seat; 8. Connecting pipe; 9. Hanging ring; 10. Chain; 11. Spring buckle;

[0047] 101. Cooling semi-ring; 102. Connecting block;

[0048] 201. Plug; 202. Sealing block; 203. Sealing ring; 204. Retaining ring;

[0049] 301. Fixing plate; 302. Slide rod; 303. Compression spring;

[0050] 401. Clamping plate; 402. Retaining ring; 403. Clamping block; 404. Anti-slip mat;

[0051] 501. Fixed cylinder; 502. Moving rod; 503. Rebound spring;

[0052] 601. Locking ring; 602. Limiting rod;

[0053] 701, retaining ring; 702, heat-conducting plate. Detailed Implementation

[0054] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0055] like Figures 1 to 2 As shown, this embodiment proposes a tensile-resistant and high-temperature-resistant cross-linked polyethylene cable, including a conductor 1, a cross-linked polyethylene insulation layer 2 wrapped around the conductor 1, an inner sheath 3 disposed outside the cross-linked polyethylene insulation layer 2, a filler disposed between the inner sheath 3 and the cross-linked polyethylene insulation layer 2, an armor layer 4 wrapped around the inner sheath 3, an outer sheath 5 wrapped around the armor layer 4, and also includes a cooling ring, a connecting pipe 8, and a hanging ring 9.

[0056] Cross-linked polyethylene insulation layer 2 uses 100 parts of low-density polyethylene as the base material, providing basic insulation and processing performance. 1.8-2.0 parts of dicumyl peroxide are the main cross-linking agent, forming a three-dimensional network structure to improve heat resistance and tensile strength. 0.2-1.0 parts of triallyl isocyanurate or composite peroxide are used as auxiliary cross-linking agents to improve cross-linking density and thermal elongation qualification rate. 0.3-0.5 parts of antioxidant inhibit high-temperature aging and extend service life. 0.5 parts of NAPM grafted antioxidant provide melt grafting modification, improving heat and oxygen aging resistance. 0.1-0.3 parts of... Polar oxidized polyethylene wax acts as a space charge inhibitor, suppressing space charge accumulation and improving breakdown strength. 0.7-0.8 parts of 2,2,6,6-tetramethylpiperidine oxide acts as a light stabilizer, improving weather resistance and heat aging resistance. 0.2-0.4 parts of thioamide compounds act as anti-scorching agents, preventing early crosslinking during processing and ensuring long-term extrusion stability. 3.5-4.5 parts of nanofiller masterbatch acts as a nano-reinforced filler, improving tensile strength and breakdown field strength. 0.5-1.5 parts of lubricant are used to improve processing fluidity and enhance surface quality.

[0057] The cooling ring is detachably mounted on the outside of the outer sheath 5. An annular cooling cavity is formed inside the cooling ring, and the cavity is filled with a cooling medium, such as... Figures 3 to 4 As shown, a heat sink 6 is fixedly installed on the cooling ring. The cooling ring includes a cooling half-ring 101 and a connecting block 102. There are two cooling half-rings 101, which can be spliced ​​together to form a complete ring. The connecting block 102 is fixedly installed at one end of the cooling half-ring 101, and a connecting groove matching the connecting block 102 is opened at the other end of the cooling half-ring 101. The connecting block 102 is detachably installed inside the connecting groove by connecting bolts. The connecting block 102 is inserted into the connecting groove and fixed by connecting bolts. The cooling half-rings 101 are fixed inside the connecting groove to achieve a fixed connection. The two cooling half-rings 101 are spliced ​​into a whole ring and fitted on the outside of the outer sheath 5. Cooling medium can be pre-filled into the cooling ring. The cooling medium circulates inside the cooling ring to remove the heat generated by the cable during operation. The heat sink 6 can quickly dissipate the heat to the external environment to ensure the service life of the cable. The cooling half-rings 101 can be quickly disassembled and assembled by connecting bolts, which is convenient for replacing specific cooling rings when they are damaged in the future.

[0058] like Figure 4 As shown, both ends of the cooling ring are connected to connecting seats 7, and the connecting pipe 8 is detachably connected to the connecting seat 7 via a quick-connect fitting, for the circulation of the cooling medium, as shown. Figures 4 to 7As shown, the quick-connect connector can seal the connecting seat 7. The quick-connect connector includes a plug 201, a sealing block 202, and an installation assembly. One end of the plug 201 is fixedly connected to the connecting pipe 8, and the other end of the plug 201 is inserted into the interior of the connecting seat 7. A through hole is provided at the end of the plug 201. The sealing block 202 is slidably disposed inside the connecting seat 7 by means of an elastic element. The sealing block 202 seals the connecting seat 7 under the action of the elastic element. The elastic element includes a fixing plate 301, a sliding rod 302, and a compression spring 303. The fixing plate 301 is fixedly disposed inside the connecting seat 7. The sliding rod 302 and the sealing block 202 are fixedly connected, and the sliding rod 302 and the fixing plate 301 are in sliding fit. A compression spring 303 is disposed between the sealing block 202 and the fixing plate 301. When the plug 201 is inserted into the connecting seat 7, the sealing block 202 is pushed open, allowing the cooling medium to flow. The connecting seat 7 includes a connecting part with a larger diameter and a sealing part with a smaller diameter. Under the action of the compression spring 303, the sealing block 202 blocks the sealing part. When the plug 201 is inserted into the sealing part, the sealing block 202 is pushed into the interior of the connecting part. The diameter of the sealing block 202 is larger than that of the sealing part and smaller than that of the connecting part. The plug 201 and the connecting seat 7 are connected through the through hole, so that the cooling medium can circulate between the connecting pipe 8 and the cooling ring, thereby continuously cooling the cable and extending its service life.

[0059] The mounting component is provided on the plug 201 for mounting the plug 201 onto the connector 7, such as... Figures 4 to 7 , Figure 9As shown, the mounting assembly includes a locking plate 401, a retaining ring 402, and a locking element. The locking plate 401 is mounted on the plug 201 via a spring-loaded mechanism. A locking block 403 is fixedly connected to the locking plate 401. The retaining ring 402 is fixedly mounted on the outside of the connecting seat 7. When the plug 201 is inserted into the connecting seat 7, the locking block 403, under the action of the spring-loaded mechanism, abuts against the end of the retaining ring 402 to secure the plug 201. The spring-loaded mechanism includes a fixing cylinder 501 and a moving rod 502. The fixing cylinder 501 is fixedly mounted on the outside of the plug 201. A moving groove matching the moving rod 502 is formed on the fixing cylinder 501. A spring-loaded spring 503 is provided between the moving rod 502 and the inner wall of the moving groove. The locking element is mounted on the plug 201 and is used to lock the locking plate 401. 1. Auxiliary locking is performed. The locking component includes a locking ring 601, which is slidably disposed outside the plug 201. The locking ring 601 moves axially along the plug 201. A limit rod 602 is fixedly connected to the outside of the plug 201. The locking ring 601 and the limit rod 602 are in sliding engagement. The inner wall of the locking ring 601 fits against the outer side of the clamping plate 401 to limit the position of the clamping plate 401. An anti-slip pad 404 is fixedly disposed on the outer side of the clamping plate 401. The anti-slip pad 404 contacts the inner side wall of the locking ring 601. A sealing ring 203 is fixedly fitted outside the plug 201. The sealing ring 203 fits tightly against the inner wall of the connecting seat 7 to ensure the sealing performance of the plug 201 and the connecting seat 7. A retaining ring 20 is fixedly fitted outside the plug 201. 4. A sealing ring is fixedly connected to the retaining ring 204. The sealing ring and the fixing ring 402 are tightly fitted together, further ensuring the sealing between the plug 201 and the connecting seat 7. When the sealing ring and the fixing ring 402 are tightly fitted together, the plug 201 pushes the sealing block 202 into the interior of the connecting part to achieve the connection between the plug 201 and the connecting seat 7. During the movement of the plug 201 towards the connecting seat 7, the fixing ring 402 pushes the locking block 403 and the locking plate 401 outward, causing the return spring 503 to extend. When the sealing ring and the fixing ring 402 are tightly fitted together, the locking block 403 moves to the side of the fixing ring 402 away from the retaining ring 204. Under the action of the return spring 503, the outer walls of the locking plate 401 and the fixing ring 402 are pressed together, and the locking block 403 and the fixing ring 402 move away from the retaining ring 204. The plug 201 is secured by a clamping ring 601 against one side of the connector 402, thus connecting the plug 201 and the connector 7. During the connection process, the locking ring 601 moves away from the locking plate 401. When the locking block 403 engages with the fixing ring 402 under the action of the return spring 503, the locking ring 601 is pushed to move to the outside of the locking plate 401 to limit the locking plate 401, ensuring that the outer side of the locking plate 401 and the fixing ring 402 are pressed together, thus ensuring the stability of the locking block 403 and locking the plug 201. This ensures the stability of the connection between the plug 201 and the connector 7. The anti-slip pad 404 ensures the stability between the locking plate 401 and the locking ring 601. When it is necessary to disconnect the plug 201 and the connector 7, the locking ring 601 is pushed away from the locking plate 401.Pull the locking plate 401 outward to move the locking block 403 away from the connecting seat 7, thereby releasing the retaining ring 402 from limiting the locking block 403. Then, pull the plug 201 outward.

[0060] like Figure 3 and Figure 8 As shown, the hanging ring 9 is fixedly installed on the outside of the cooling ring. A chain 10 is detachably installed between two hanging rings 9 on two adjacent cooling rings. The end of the chain 10 is provided with a spring buckle 11 for connecting the chain 10 between two adjacent hanging rings 9. The connecting pipe 8 is a flexible tube, which allows the cable to be bent. The chain 10 can be matched with the bending angle of the cable. When the cable is subjected to axial tension, the chain 10 and the connecting pipe 8 can jointly bear the axial tension, thereby improving the tensile strength of the cable.

[0061] To improve the cooling effect on the cable, auxiliary cooling components are also included, such as... Figures 1 to 4 As shown, the auxiliary cooling component is detachably mounted on the connecting pipe 8. The auxiliary cooling component contacts the outer sheath 5 to provide auxiliary cooling for the outer sheath 5. The auxiliary cooling component includes a retaining ring 701 and a heat-conducting plate 702. The retaining ring 701 is snapped onto the outside of the connecting pipe 8. The retaining ring 701 has an opening for snapping into the connecting pipe 8. The heat-conducting plate 702 is fixedly connected to the retaining ring 701. The heat-conducting plate 702 contacts the outside of the outer sheath 5, snapping the retaining ring 701 onto the outside of the connecting pipe 8. The heat-conducting plate 702 is in contact with the outer sheath 5 to conduct heat, so that the cable and the cooling medium in the connecting pipe 8 can exchange heat, thereby improving the cooling efficiency of the cable. The retaining ring 701 is made of elastic material and can be quickly snapped onto the outside of the connecting pipe 8.

[0062] The working principle or usage process of this high-temperature cross-linked polyethylene cable is as follows: Select an appropriate number of cooling rings and connecting pipes 8 according to the cable length requirements. Fasten two cooling half-rings 101 at the predetermined position of the cable outer sheath 5. Insert the connecting block 102 of one half-ring into the connecting groove of the other half-ring. Connect the cooling half-rings 101 with connecting bolts. Insert the plug 201 into the interior of the connecting seat 7 to achieve the connection between the connecting pipe 8 and the connecting seat 7. Drive the locking block 403 to lock the fixing ring 402 through the spring spring 503. Slide the locking ring 601 to the outside of the locking plate 401 to lock it, ensuring the stability of the connection between the plug 201 and the connecting seat 7. The heat-conducting plate 702 is close to the outer sheath 5. The retaining ring 701 is locked to the outside of the connecting pipe 8.

[0063] Cooling medium can be pre-filled into the cooling ring, or after installation, it can be connected to a connecting seat 7 located on the edge via plug 201. Cooling medium is then added to the cooling ring through the pipeline. The cooling medium circulates in each cooling ring through the connecting pipe 8. The heat generated by the cable exchanges heat with the cooling medium in the cooling pipe. Some of the heat is transferred to the retaining ring 701 through the heat-conducting plate 702, and then carried away by the cooling medium in the connecting pipe 8, thereby cooling the cable.

[0064] The chain 10 is connected between two adjacent hanging rings 9 by spring buckles 11. When the cable is subjected to axial tension, the chain 10 and the connecting pipe 8 jointly bear the tension, thus improving the tensile strength of the cable.

[0065] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-temperature resistant cross-linked polyethylene cable, comprising a conductor (1), wherein the conductor (1) is externally wrapped with a cross-linked polyethylene insulation layer (2), an inner sheath (3) is disposed externally on the cross-linked polyethylene insulation layer (2), an armor layer (4) is externally wrapped on the inner sheath (3), and an outer sheath (5) is externally wrapped on the armor layer (4), characterized in that, Also includes: Cooling ring, the cooling ring is detachably disposed on the outside of the outer sheath (5), the cooling ring has an annular cooling cavity inside, the annular cooling cavity is filled with a cooling medium, and a heat sink (6) is fixedly disposed on the cooling ring. The connecting pipe (8) has connecting seats (7) at both ends of the cooling ring. The connecting pipe (8) is detachably connected to the connecting seat (7) via a quick-connect connector for circulating cooling medium. The quick-connect connector can block the connecting seat (7). Hanging ring (9), the hanging ring (9) is fixedly installed on the outside of the cooling ring, and a chain (10) is detachably installed between two hanging rings (9) at corresponding positions on two adjacent cooling rings.

2. The high-temperature resistant, tensile-strength cross-linked polyethylene cable according to claim 1, characterized in that, The quick-connector includes: A plug (201) is provided, one end of which is fixedly connected to the connecting tube (8), and the other end of which is inserted into the interior of the connecting seat (7). A through hole is provided at the end of the plug (201). A blocking block (202) is slidably disposed inside the connecting seat (7) by means of an elastic element. The blocking block (202) blocks the connecting seat (7) under the action of the elastic element. When the plug (201) is inserted into the connecting seat (7), the blocking block (202) is pushed open, and the cooling medium can flow. The mounting component is disposed on the plug (201) for mounting the plug (201) on the connector (7).

3. The high-temperature resistant, tensile-strength cross-linked polyethylene cable according to claim 2, characterized in that, The installation components include: A card plate (401) is mounted on the plug (201) via a spring-loaded component, and a card block (403) is fixedly connected to the card plate (401). A retaining ring (402) is fixedly disposed on the outside of the connecting seat (7). When the plug (201) is inserted into the inside of the connecting seat (7), the locking block (403) is pressed against the end of the retaining ring (402) by the action of the spring-loaded component to fix the plug (201). A locking element is disposed on the plug (201) for auxiliary locking of the card plate (401).

4. The high-temperature resistant, tensile-strength cross-linked polyethylene cable according to claim 3, characterized in that, The locking element includes: A locking ring (601) is slidably disposed outside the plug (201). The locking ring (601) moves axially along the plug (201). The inner wall of the locking ring (601) is fitted with the outer side of the retaining plate (401) to restrict the position of the retaining plate (401).

5. The high-temperature resistant, tensile-strength cross-linked polyethylene cable according to claim 1, characterized in that, The cooling ring includes: Cooling half-ring (101), two cooling half-rings (101) are provided, and the two cooling half-rings (101) can be spliced ​​together to form a whole ring; A connecting block (102) is fixedly disposed at one end of the cooling half ring (101), and a connecting groove matching the connecting block (102) is opened at the other end of the cooling half ring (101). The connecting block (102) is detachably disposed inside the connecting groove by means of connecting bolts.

6. The high-temperature resistant, tensile-strength cross-linked polyethylene cable according to claim 2, characterized in that, The elastic element includes: A fixing plate (301) is fixedly disposed inside the connecting seat (7); A sliding rod (302) is fixedly connected to the sealing block (202), and the sliding rod (302) and the fixing plate (301) are in sliding fit. A compression spring (303) is disposed between the sealing block (202) and the fixing plate (301).

7. A high-temperature resistant, tensile-strength cross-linked polyethylene cable according to claim 3, characterized in that, The springback component includes: A fixing cylinder (501) is fixedly disposed on the outside of the plug (201); The movable rod (502) has a movable groove on the fixed cylinder (501) that matches the movable rod (502), and a rebound spring (503) is provided between the movable rod (502) and the inner wall of the movable groove.

8. A high-temperature resistant, tensile-strength cross-linked polyethylene cable according to claim 4, characterized in that, An anti-slip pad (404) is fixedly provided on the outer side of the card plate (401), and the anti-slip pad (404) is in contact with the inner wall of the locking ring (601).

9. A high-temperature resistant, tensile-strength cross-linked polyethylene cable according to claim 1, characterized in that, It also includes an auxiliary cooling component, which is detachably mounted on the connecting pipe (8). The auxiliary cooling component contacts the outer sheath (5) to provide auxiliary cooling to the outer sheath (5).

10. A high-temperature resistant, tensile-strength cross-linked polyethylene cable according to claim 9, characterized in that, The auxiliary cooling component includes: A retaining ring (701) is engaged with the outside of the connecting pipe (8), and an opening is provided on the retaining ring (701); A heat-conducting sheet (702) is fixedly connected to the retaining ring (701), and the heat-conducting sheet (702) is in contact with the outer side of the outer sheath (5).

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