A high voltage cable with a connector

Abstract

The application discloses a high-voltage cable with a connector and relates to the technical field of cables, wherein a plurality of metal shielding strips are equidistantly laid on the inner side of an outer protective insulating sleeve; an inner fixed insulating sleeve is installed on the inner side of the plurality of metal shielding strips; a plurality of embedded insulating strips are equidistantly clamped on the outer side of a transmission wire core; a guide supporting strip is clamped on the inner side of the embedded insulating strips; a fixed clamping strip is installed on the outer side of the embedded insulating strips; a plurality of gas-liquid storage cavities are equidistantly formed on the inner side of the fixed clamping strip; and an elastic extrusion plate is installed on the inner side of the middle part of the gas-liquid storage cavity. The application effectively solves the problem that the internal insulating structure and the electric field balance structure of the cable are dislocated and have gaps due to the twisting of the cable, which leads to the abnormality of insulation and electric field protection. The application uses multi-section filling treatment to improve the internal sealing and isolation effect, reduce the probability of discharge ionization between the internal wire core and the protection structure, and improve the operation stability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cables, in particular to a high-voltage cable with a connector. BACKGROUND

[0002] High-voltage cables generally refer to power cables with a voltage level of 110 kV and above, which can withstand extremely high voltage and current and are used for main power transmission from power plants to load centers. The components of high-voltage cables include conductors, conductor shielding layers, insulation layers, insulation shielding layers, metal sheaths, and outer sheaths. High-voltage cables are mainly used in power main network transmission, cross-sea or cross-river power transmission, urban underground power transmission, large industrial parks, and new energy power stations.

[0003] However, the existing cables have the problem that when in use, the insulation structure and electric field balancing structure inside the cable are affected by cable twisting, resulting in structural misalignment, causing gaps in the insulation and electric field balancing structure, and causing discharge ionization between the internal wire core and the protective structure, affecting the stability of the cable internal insulation. SUMMARY

[0004] The present application provides a high-voltage cable with a connector, which can effectively solve the problem of the existing cables in the background art, that is, when in use, the insulation structure and electric field balancing structure inside the cable are affected by cable twisting, resulting in structural misalignment, causing gaps in the insulation and electric field balancing structure, and causing discharge ionization between the internal wire core and the protective structure, affecting the stability of the cable internal insulation.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a high-voltage cable with a connector, comprising an outer insulation sheath, the inner side of the outer insulation sheath is provided with a conveying wire core, and the side end of the outer insulation sheath is provided with a multi-division fixed connection assembly.

[0006] The multi-division fixed connection assembly comprises a metal shielding strip.

[0007] The inner side of the outer insulation sheath is equally spaced with a plurality of metal shielding strips, and the inner side of the plurality of metal shielding strips is provided with an inner fixed insulation sheath.

[0008] The outer side of the conveying wire core is equally spaced with a plurality of embedded insulation strips, and the inner side of the embedded insulation strip is provided with a guide support strip.

[0009] The outer side of the embedded insulation strip is provided with a fixed clamping strip, and the inner side of the fixed clamping strip is equally spaced with a plurality of gas-liquid storage cavities.

[0010] The middle part of the inner side of the gas-liquid storage cavity is provided with an elastic extrusion plate, and the one end of the gas-liquid storage cavity is equidistantly bonded with a plurality of extrusion crushing membranes.

[0011] The outer side of the fixed clamping strip is equidistantly laid with a plurality of inner arc half-conductive sheets, and the outer side of the inner arc half-conductive sheet is provided with a double-concave arc-shaped strip.

[0012] The one end of the double-concave arc-shaped strip is equidistantly provided with a plurality of outer row filling holes.

[0013] According to the above technical scheme, the longitudinal section of the metal shielding strip and the elastic extrusion plate is arc-shaped, the guide supporting strip and the embedded insulation strip are placed in the inner side of the outer protective insulation sleeve, and the inner diameter of the double-concave arc-shaped strip is equal to the outer diameter of the inner arc half-conductive sheet.

[0014] According to the above technical scheme, the one end of the double-concave arc-shaped strip is bonded with an elastic internal pressure pipe.

[0015] The outer side end of the elastic internal pressure pipe is equidistantly sleeved with a plurality of one-way compression bags, and the outer side end of the one-way compression bag is sleeved with an integrated insulation pipe.

[0016] The outer side of the integrated insulation pipe is equidistantly laid with a plurality of protective half-conductive sheets.

[0017] The outer side end of the outer protective insulation sleeve is sleeved with a cold shrink compression pipe, and the inner side of the cold shrink compression pipe is symmetrically provided with a threaded compression sleeve.

[0018] The side end of the threaded compression sleeve is sleeved with a compression adapter, and the compression adapter is equidistantly sleeved with a plurality of abutting insulation sheets on the outer side end of the threaded compression sleeve.

[0019] The outer side end of the abutting insulation sheet is laid with a plurality of processing half-conductive sheets.

[0020] The outer side end of the threaded compression sleeve is provided with an outer clamping combined sleeve through a fixing bolt, and the outer side end of the threaded compression sleeve is sleeved with an abutting insulation pad.

[0021] The inner side of the cold shrink compression pipe is provided with a compression sealing pad at a position corresponding to the outer clamping combined sleeve.

[0022] According to the above technical scheme, the double-concave arc-shaped strip has four, the outer side end of the protective half-conductive sheet abuts against the inner side end of the inner fixed insulation sleeve, and the inner side end of the threaded compression sleeve is connected with the outer protective insulation sleeve.

[0023] According to the above technical scheme, the one end of the two compression adapters is connected with each other, the longitudinal section of the one end of the threaded compression sleeve and the compression adapter is hexagonal, and the abutting insulation sheet has three layers.

[0024] According to the technical scheme, the longitudinal section of the processing semi-conductive sheet is arc-shaped, two outer clamps are combined at one end, and the side end of the compression sealing gasket is attached to the side end of the outer clamp combination sleeve.

[0025] According to the technical scheme, the side end of the delivery wire core is provided with an external connecting component.

[0026] The external connecting component comprises an electricity connecting combination head.

[0027] One end of the delivery wire core is sleeved with an electricity connecting combination head, and the side end of the electricity connecting combination head is provided with a combined cold shrink tube.

[0028] Symmetrical support closed sleeves are arranged inside the combined cold shrink tube, and elastic insulation rings are clamped at the side end of the support closed sleeves.

[0029] A compression fixed tube is installed between the two elastic insulation rings, and outer protective insulation pads are symmetrically clamped outside the compression fixed tube.

[0030] A plurality of linkage shielding strips are equidistantly laid outside the outer protective insulation pad, and inner clamping fixed sleeves are installed at the outer side end of the linkage shielding strips.

[0031] A plurality of perforated injection tubes are symmetrically and penetratively connected inside the inner clamping fixed sleeves, and isolation limiting films are installed at one end inside the perforated injection tubes.

[0032] Rising springs are symmetrically installed inside the inner clamping fixed sleeves, and impact crushing frames are installed at one end of the rising springs.

[0033] According to the technical scheme, one end of one of the support closed sleeves is connected with one end of the outer protective insulation sleeve, the side end of the elastic insulation ring is connected with the side end of the delivery wire core, and the longitudinal section of the inner clamping fixed sleeve is arc-shaped.

[0034] According to the technical scheme, a closed shielding strip is bonded to the inner wall of the combined cold shrink tube, an inner pressure fixed block is installed inside the closed shielding strip, and a plurality of isolation insulation blocks are equidistantly sleeved inside one of the support closed sleeves.

[0035] The impact crushing frame is slidingly installed inside the inner clamping fixed sleeve, there are two inner clamping fixed sleeves, and the longitudinal section of the impact crushing frame is a work type.

[0036] According to the technical scheme, the inner pressure fixed block is attached to the side end of the impact crushing frame, the inner pressure fixed block is slidingly placed between the two support closed sleeves, and the side end of the isolation insulation block is attached to the outer side end of the electricity connecting combination head.

[0037] Compared with the prior art, the present application has the following beneficial effects:

[0038] 1、Set up with multiple fixed components, through the delivery of the core power supply processing, using the heat generated by the power supply to heat the fixed clamping strip and one-way compression bag, using the air in the gas-liquid storage cavity to pressurize the elastic extrusion plate, push the insulating filling liquid in the gas-liquid storage cavity to flow between the embedded insulating strip and the fixed clamping strip, cooperate with the one-way compression bag to push the elastic internal pressure pipe to extrude the insulating mixed filling liquid in the double concave arc strip, the insulating filling liquid flows along the outer discharge filling hole to the inner arc semiconductive sheet and the double concave arc strip, through multiple thermal expansion extrusion, realize insulation supplement and electric field sealing treatment, reduce the insulation caused by cable twisting, cause the structure to separate, make the electric field inside appear small range crack, improve the effect of internal insulation protection and electric field balanced isolation effect, reduce the discharge ionization caused by high voltage power supply, so as to improve the stability and safety of the cable after actual laying, prolong the service life of the cable;

[0039] Through the direct insertion and connection of two groups of threaded pressure fixing sleeves and pressure combined adapters, the combination of prefabricated cable joints and cables, the combination of external clamping sleeve and threaded pressure fixing sleeve by fixed bolts, the sealing and isolation treatment of the joint by cold shrink pressure pipe and pressure sealing pad, realize the tightness of two groups of cables, through cold shrink pressure pipe, adhering insulating sheet, adhering insulating pad and pressure sealing pad, insulating sealing treatment is carried out on the interface, cooperate with the processing of semiconductive sheet to carry out electric field balance treatment, use multiple insulation and electric field balance, and use prefabricated horizontal interface and quick connection interface to cooperate with each other, reduce the gap between the core and the core and the core and the joint, avoid the electric field ionization aging caused by the gap at the joint position, improve the stability of the connection power supply and the service life of the cable;

[0040] Through the internal heat self-compression filling, internal torsion self-adaptive filling, insulation closing and electric field closing treatment, cooperate with horizontal pressure joint, sealing isolation joint and straight insertion card joint, effectively solve the problem that the internal insulation structure and electric field balance structure of the cable are dislocated due to cable twisting, which causes the insulation and electric field protection to be abnormal, use multiple filling treatment to improve the effect of internal sealing and isolation, reduce the probability of discharge ionization between the internal core and the protection structure, improve the stability of operation, cooperate with joint sealing and tight fitting treatment, reduce the occurrence of interface ionization enhancement caused by interface gap, slow down the speed of cable aging, improve the stability and actual service life of long-term use of cable.

[0041] 2、Set up with external components, through the support of closed set, elastic insulation ring and compression fixed tube and the delivery line core sleeve connection, with compression fixed tube and electric combination head and delivery line core compression sealing connection, using support closed set to the outer protective insulation sleeve compression sealing treatment, through the support of closed set and isolation insulation block to the insulation shielding treatment of electric combination head, through the combination of cold shrink tube to drive closed shielding strip and internal pressure fixed block movement, using the internal pressure fixed block to push the impact crushing frame movement, to the isolation of limit film stamping broken, using the internal card fixed sleeve and the porous injection tube to seal between the internal card fixed sleeve and the linkage shielding strip, realize the internal gap sealing treatment, so as to reduce the gap generated in the interface when manual connection;

[0042] Through the combination of cold shrink tube, support closed set, elastic insulation ring, outer protective insulation pad, internal card fixed sleeve and internal pressure fixed block, the internal delivery line core and the interface position are subjected to multi-layer step-by-step homogenization insulation treatment, and the linkage shielding strip and the closed shielding strip are subjected to electric field equalization step-by-step treatment, so as to reduce the occurrence of ionization, avoid the damage of ionization caused by cable joint, and avoid the occurrence of accelerated aging of cable, effectively improve the stability of power transmission.

[0043] In summary, through the cooperation of multi-segment fixed connection components and external components, through multi-segment connection and multi-segment filling treatment, the connection between the joint and the cable, the joint and the joint, and the internal filling sealing of the cable are realized, and the multi-segment insulation treatment and semi-conductive electric field equalization treatment are cooperated, so as to reduce the occurrence of accelerated aging of cable caused by internal ionization of cable, improve the stability of operation and the service life. BRIEF DESCRIPTION OF DRAWINGS

[0044] The accompanying drawings are used to provide further understanding of the present application, and constitute a part of the specification. Together with embodiments of the present application, they are used to explain the present application, and do not constitute a limitation of the present application.

[0045] In the drawings:

[0046] Figure 1 is a perspective structural schematic diagram of the present application;

[0047] Figure 2 is a structural schematic diagram of the multi-segment fixed connection component of the present application;

[0048] Figure 3 is a mounting structure schematic diagram of the outer protective insulation sleeve of the present application;

[0049] Figure 4 is a mounting structure schematic diagram of the delivery line core of the present application;

[0050] Figure 5 is a mounting structure schematic diagram of the internal arc semi-conductive sheet of the present application;

[0051] Figure 6 is a schematic diagram of the installation structure of the cold shrink compression joint of the present application; Figure 5

[0052] Figure 7 is a schematic diagram of the installation structure of the cold shrink compression joint of the present application;

[0053] Figure 8 is a schematic diagram of the installation structure of the compression adapter of the present application;

[0054] Figure 9 is a schematic diagram of the installation structure of the compression sealing gasket of the present application;

[0055] Figure 10 is a schematic diagram of the structure of the external assembly of the present application;

[0056] Figure 11 is a schematic diagram of the installation structure of the elastic insulation ring of the present application;

[0057] Figure 12 is a schematic diagram of the installation structure of the external protective insulation gasket of the present application;

[0058] Figure label: 1, external protective insulation sleeve; 2, transmission line core;

[0059] 3, multi-divisional assembly; 301, metal shielding strip; 302, internal solid insulation sleeve; 303, internally embedded insulation strip; 304, guiding support strip; 305, fixed clamping strip; 306, gas-liquid storage cavity; 307, elastic extrusion plate; 308, extrusion breaking film; 309, inner arc semi-conductive sheet; 310, double concave arc-shaped strip; 311, outer row filling hole; 312, elastic internal pressure tube; 313, one-way compression bag; 314, integrated insulation tube; 315, protective semi-conductive sheet; 316, cold shrink compression joint; 317, threaded compression fixing sleeve; 318, compression adapter; 319, attached insulation sheet; 320, processing semi-conductive sheet; 321, fixed bolt; 322, external clamping assembly sleeve; 323, attached insulation gasket; 324, compression sealing gasket;

[0060] 4, external assembly; 401, power connection assembly head; 402, assembly cold shrink tube; 403, support closing sleeve; 404, elastic insulation ring; 405, compression fixing tube; 406, external protective insulation gasket; 407, linkage shielding strip; 408, internal clamping fixing sleeve; 409, multi-hole injection tube; 410, isolation limiting film; 411, ascending spring; 412, impact breaking frame; 413, closing shielding strip; 414, internal pressure fixing block; 415, isolation insulation block. DETAILED DESCRIPTION

[0061] The preferred embodiments of the present application will be described below in conjunction with the accompanying drawings, and it should be understood that the preferred embodiments described herein are only used to explain and illustrate the present application, and are not used to limit the present application.​

[0062] Example: Figures 1-12 As shown, the present invention provides a technical solution: a high-voltage cable with a connector, including an outer sheath 1, a transmission core 2 disposed inside the outer sheath 1, and a multi-junction assembly 3 disposed on the side end of the outer sheath 1.

[0063] The multi-component fixed junction assembly 3 includes a metal shielding strip 301, an inner solid insulating sleeve 302, an embedded insulating strip 303, a guide support strip 304, a fixing clip strip 305, a gas-liquid storage cavity 306, an elastic extrusion plate 307, an extrusion crushing membrane 308, an inner arc semi-conductive sheet 309, a double concave arc strip 310, an outer discharge filling hole 311, an elastic inner pressure tube 312, a unidirectional compression bag 313, an integrated insulating tube 314, a protective semi-conductive sheet 315, a cold shrink compression tube 316, a threaded compression sleeve 317, a compression adapter 318, a bonding insulating sheet 319, a processed semi-conductive sheet 320, a fixing bolt 321, an outer clamping combination sleeve 322, a bonding insulating pad 323, and a compression sealing pad 324;

[0064] A number of metal shielding strips 301 are laid at equal intervals on the inner side of the outer insulating sleeve 1, and an inner solid insulating sleeve 302 is installed on the inner side of the multiple metal shielding strips 301.

[0065] Several embedded insulating strips 303 are equidistantly snapped onto the outer side of the conveyor core 2. A guide support strip 304 is snapped onto the inner side of the embedded insulating strip 303. Both the guide support strip 304 and the embedded insulating strip 303 are placed inside the outer insulating sleeve 1 to achieve arc positioning and sealed insulation treatment.

[0066] A fixing strip 305 is installed on the outside of the embedded insulating strip 303, and a number of gas-liquid storage cavities 306 are equally spaced on the inner side of the fixing strip 305.

[0067] An elastic extrusion plate 307 is installed in the middle of the inner side of the gas-liquid storage cavity 306. The longitudinal section of the metal shielding strip 301 and the elastic extrusion plate 307 is arc-shaped to achieve arc-shaped support and limit snap-fit, ensuring the stability of the connection. Several extrusion and crushing membranes 308 are equidistantly bonded to one end of the gas-liquid storage cavity 306.

[0068] Several inner arc semi-conductive sheets 309 are laid at equal intervals on the outer side of the fixing strip 305. Double concave arc strips 310 are installed on the outer side of the inner arc semi-conductive sheets 309. There are four double concave arc strips 310 to achieve external positioning and protection treatment, and ensure the stability of sealing isolation and limiting clamping. The inner diameter of the double concave arc strips 310 is equal to the outer diameter of the inner arc semi-conductive sheets 309, so as to achieve arc-shaped pressing alignment and sealing fit restriction, and ensure the stability of insulation fit and internal sealing restriction.

[0069] The double concave arc-shaped strip 310 is provided with a plurality of outer filling holes 311 equidistantly at one end, and the double concave arc-shaped strip 310 is bonded with an elastic inner pressure pipe 312 at one end;

[0070] The elastic inner pressure pipe 312 is provided with a plurality of one-way compression bags 313 equidistantly at the outer side end, and the one-way compression bags 313 are provided with an integrated insulation pipe 314 at the outer side end;

[0071] The integrated insulation pipe 314 is provided with a plurality of protective semi-conductive pieces 315 equidistantly at the outer side, and the protective semi-conductive pieces 315 are attached to the inner side end of the inner fixed insulation sleeve 302, so as to realize insulation protection and semi-conductive balanced electric field processing;

[0072] The outer protective insulation sleeve 1 is provided with a cold shrink compression pipe 316 at the outer side end, and the cold shrink compression pipe 316 is provided with a threaded compression sleeve 317 symmetrically at the inner side;

[0073] The threaded compression sleeve 317 is provided with a compression adapter 318 at the side end, the threaded compression sleeve 317 is connected with the outer protective insulation sleeve 1 in a sleeved manner at the inner side end, the two compression adapters 318 are connected with each other at one end, the longitudinal section of the threaded compression sleeve 317 and the compression adapter 318 at one end is hexagonal, so as to realize multi-section connection processing, ensure the stability of joint attachment and sealing, reduce the electric field ionization caused by joint gap, and the compression adapter 318 is provided with a plurality of attached insulation pieces 319 equidistantly at the outer side end of the threaded compression sleeve 317, the attached insulation pieces 319 have three layers, so as to realize attached sealing processing;

[0074] The attached insulation pieces 319 are provided with a plurality of processing semi-conductive pieces 320 at the outer side end, the longitudinal section of the processing semi-conductive pieces 320 is arc-shaped, so as to realize stable attachment and ensure the stability of electric field balanced processing;

[0075] The threaded compression sleeve 317 is provided with an outer clamping combined sleeve 322 at the outer side end through a fixing bolt 321, and the threaded compression sleeve 317 is provided with an attached insulation pad 323 at one end of the outer side;

[0076] The cold shrink compression pipe 316 is provided with a compression sealing pad 324 at the inner side corresponding to the position of the outer clamping combined sleeve 322, the two outer clamping combined sleeves 322 are attached at one end, the compression sealing pad 324 is attached to the outer clamping combined sleeve 322 at the side end, so as to ensure the stability of sealing insulation and alignment clamping restriction.

[0077] The delivery wire core 2 is provided with an external component 4 at the side end;

[0078] The external component 4 includes a power connection assembly head 401, a combination cold shrink tubing 402, a support closing sleeve 403, an elastic insulating ring 404, a pressing and fixing tube 405, an outer protective insulating pad 406, a linkage shielding strip 407, an inner clamping fixing sleeve 408, a multi-hole injection tube 409, an isolation limiting membrane 410, a rising spring 411, an impact crushing frame 412, a closing shielding strip 413, an inner pressure fixing block 414, and an isolation insulating block 415;

[0079] One end of the transmission core 2 is fitted with a power connection assembly head 401, and a combined cold shrink tube 402 is provided on the side end of the power connection assembly head 401.

[0080] The inner side of the combined cold shrink tubing 402 is symmetrically provided with support closing sleeves 403. One end of one of the support closing sleeves 403 is fitted and connected to one end of the outer protective insulating sleeve 1 to achieve insulation connection and closure. An elastic insulating ring 404 is snapped into the side end of the support closing sleeve 403. The side end of the elastic insulating ring 404 is fitted and connected to the side end of the conveying core 2 to achieve elastic compression insulation at the connection point, ensuring the insulation effect and stability.

[0081] A pressing and fixing tube 405 is installed between two elastic insulating rings 404, and an outer insulating pad 406 is symmetrically snapped onto the outside of the pressing and fixing tube 405.

[0082] Several linkage shielding strips 407 are laid at equal intervals on the outer end of the outer insulating pad 406. An inner clamping fixing sleeve 408 is installed on the outer end of the linkage shielding strip 407. The longitudinal section of the inner clamping fixing sleeve 408 is arc-shaped. The impact crushing frame 412 is slidably installed inside the inner clamping fixing sleeve 408. There are two inner clamping fixing sleeves 408. The longitudinal section of the impact crushing frame 412 is I-shaped, which ensures the alignment and impact crushing stability during sealing and filling, and improves the stability of the internal sealing and filling.

[0083] A porous injection tube 409 is symmetrically connected through the inner side of the inner clamping sleeve 408, and an isolation limiting membrane 410 is installed at one end of the inner side of the porous injection tube 409.

[0084] A rising spring 411 is symmetrically installed inside the inner clamping sleeve 408, and an impact crusher 412 is installed at one end of the rising spring 411.

[0085] A closed shielding strip 413 is bonded to the inner wall of the combined cold shrink tubing 402. An internal pressure fixing block 414 is installed inside the closed shielding strip 413. The internal pressure fixing block 414 is attached to the side end of the impact crusher 412. The internal pressure fixing block 414 is slidably placed between two support closed sleeves 403 to achieve internal pressure guidance and internal pressure closure. Several isolation insulating blocks 415 are equidistantly sleeved on the inner side of one of the support closed sleeves 403. The side end of the isolation insulating block 415 is attached to the outer end of the electrical connection assembly head 401 to ensure electrical connection isolation and electrical connection insulation.

[0086] The working principle and use process of the present application: when the cable is laid and the two groups of cables are combined, the worker puts the cold shrink compression pipe 316 into the side end of the outer protective insulation sleeve 1, inserts and connects the two groups of compression adapter 318, after the insertion and connection, the outer clamp combination sleeve 322 is sleeved between the two groups of threaded compression sleeves 317, so that the side end of the threaded compression sleeve 317 is attached to the side end of the outer clamp combination sleeve 322, at this time, the outer clamp combination sleeve 322 and the threaded compression sleeve 317 are combined and connected by the fixing bolt 321, realizing the quick power connection closing treatment, at this time, the cold shrink compression pipe 316 is cold shrunk to make the side end of the compression sealing gasket 324 attached to the side end of the outer clamp combination sleeve 322, realizing the insulation isolation treatment of the cold shrink compression pipe 316 to the joint;

[0087] When the cable is combined with the power transmission equipment and the transformer equipment, the worker peels the cable by hand, strips the cable transmission core 2 according to the required length, sleeves the support closing sleeve 403, the elastic insulation ring 404 and the compression fixing pipe 405 to the side end of the cable transmission core 2, uses the compression equipment to compress the compression fixing pipe 405 to the side end of the cable transmission core 2, and makes the side end of the support closing sleeve 403 attached to the outer side end of the outer protective insulation sleeve 1, uses the support closing sleeve 403 to compress and seal the outer protective insulation sleeve 1, then sleeves the power combination head 401 to the side end of the cable transmission core 2, uses the compression equipment to make the power combination head 401 combined with the cable transmission core 2, after the combination is completed, inserts the isolation insulation block 415 into the inner side of the support closing sleeve 403, insulates and shields the power combination head 401 by the support closing sleeve 403 and the isolation insulation block 415, at this time, the outer protective insulation gasket 406 with the linkage shielding strip 407 is compressed to the side end of the compression fixing pipe 405, realizing the insulation closing of the compression fixing pipe 405 and the cable transmission core 2;

[0088] After the closure is completed, the inner card fixing sleeve 408 is clamped to the outer side end of the linkage shielding strip 407. At this time, the combined cold shrink tube 402 is sleeved into the side end of the two supporting closure sleeves 403, and one end is attached to the outer protective insulation sleeve 1. The combined cold shrink tube 402 is used to drive the closure shielding strip 413 and the inner pressure fixing block 414 to move along the two supporting closure sleeves 403 to the position of the transmission line core 2. The inner pressure fixing block 414 is pushed to move the impact crushing frame 412 along the inner card fixing sleeve 408 to the position of the porous injection pipe 409. The impact crushing frame 412 moves to the position of the porous injection pipe 409 and finally attaches to the side end of the isolation limiting film 410. At this time, the impact crushing frame 412 punctures the isolation limiting film 410. At this time, the porous injection pipe 409 is opened. At this time, the insulation mixed filling liquid in the inner card fixing sleeve 408 flows into the gap between the inner card fixing sleeve 408 and the linkage shielding strip 407 through the porous injection pipe 409, and fills and seals the gap, realizing internal sealing treatment, so that when the cable is connected to the equipment, the stripping position can be isolated.

[0089] The combined cold shrink tube 402, the supporting closure sleeve 403, the elastic insulation ring 404, the outer protective insulation pad 406, the inner card fixing sleeve 408 and the inner pressure fixing block 414 are used to uniformly insulate the internal transmission line core 2 in multiple layers and steps, and the linkage shielding strip 407 and the closure shielding strip 413 are used for electric field equalization step processing. Through the sealing filling between the linkage shielding strip 407 and the inner card fixing sleeve 408, the internal gap is reduced, the ionization condition is reduced, the ionization damage caused by the cable joint is avoided, the aging speed of the cable is accelerated, and the stability of power transmission is effectively improved.

[0090] The power supply process is carried out through the conveying line core 2. In the process of power supply, the conveying line core 2 generates heat, which is transmitted outward along the embedded insulation strip 303. In the process of outward transmission, the heat is first transmitted to the position of the fixed clamping strip 305, and then transmitted to the positions of the double concave arc-shaped strip 310 and the elastic inner pressure pipe 312 through the fixed clamping strip 305. When the fixed clamping strip 305 is heated, the air in the air-liquid storage cavity 306 inside the fixed clamping strip 305 is heated and expands to pressurize the elastic pressing plate 307. The elastic pressing plate 307 pushes the insulation mixed filling liquid in the air-liquid storage cavity 306. When the insulation mixed filling liquid is pressurized, it will pressurize the crushing membrane 308. At this time, the insulation mixed filling liquid will flow along the air-liquid storage cavity 306 between the embedded insulation strip 303 and the fixed clamping strip 305, and can fill the small separated gaps generated by the twisting of the cable. The guiding and supporting and positioning clamping process are carried out in cooperation with the guiding support strip 304, realizing internal insulation protection and internal self-filling treatment, reducing the separation of the structure caused by the twisting of the cable, and reducing the damage to the insulation layer caused by the ionization of the internal insulation caused by the high-voltage power supply. The effect of insulation protection is improved, and the high-voltage insulation caused by high-voltage power supply is reduced.

[0091] When the one-way compression bag 313 is heated, the one-way compression bag 313 is heated and expanded to push the elastic inner pressure pipe 312 to move along the double concave arc-shaped strip 310. The elastic inner pressure pipe 312 pushes the insulation mixed filling liquid located in the double concave arc-shaped strip 310 to flow along the outer filling hole 311 to the position between the inner arc half-conductive sheet 309 and the double concave arc-shaped strip 310, realizing insulation filling treatment. Through the embedded insulation strip 303, the guiding support strip 304, the fixed clamping strip 305, the inner arc half-conductive sheet 309, the double concave arc-shaped strip 310 and the integrated insulation pipe 314, the internal warp insulation isolation treatment is carried out. In cooperation with the inner arc half-conductive sheet 309, the protective half-conductive sheet 315 and the metal shielding strip 301, the electric field of the power transmission environment is balanced. The electric field balancing operation is carried out in cooperation with the internal insulation isolation treatment, realizing multiple insulation and electric field balancing protection treatment. When the cable is twisted and bent, the overall protection can be adjusted according to the actual situation. The outer part is double-insulated and isolated by the outer protective insulation sleeve 1 and the inner fixed insulation sleeve 302, and the metal shielding strip 301 is used for anti-penetration treatment, improving the strength of the cable insulation and protection.

[0092] At this time, the cable joints are insulated and sealed by cold shrink compression tube 316, insulating sheet 319, outer clamping combined sleeve 322, insulating pad 323 and compression sealing pad 324, realizing multi-section insulation treatment, ensuring the effect and stability of the interface insulation, cooperating with semi-conductive sheet 320 to perform electric field balancing treatment, and cooperating with the straight insertion interface to reduce the gap of the connection of the transmission wire core 2, improve the stability of the connection, and reduce the occurrence of electric field ionization caused by the connection gap.

[0093] Finally, it should be noted that: the above only for the preferred examples of the present application, and not for limiting the present application, although the foregoing detailed description of the present application is made with reference to the foregoing examples, for those skilled in the art, it still can be modified to the technical solutions recorded in the foregoing embodiments, or equivalent replacement of some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A high-voltage cable with a connector, comprising an outer insulating sheath (1), characterized in that: The outer insulating sleeve (1) is provided with a transmission core (2) inside, and the outer insulating sleeve (1) is provided with a multi-point fixed assembly (3) on the side end. The multi-segment fixed junction assembly (3) includes a metal shielding strip (301); The outer insulating sleeve (1) has several metal shielding strips (301) laid at equal intervals on its inner side, and an inner solid insulating sleeve (302) is installed on the inner side of the multiple metal shielding strips (301). The outer side of the transmission core (2) is equidistantly fitted with several embedded insulating strips (303), and the inner side of the embedded insulating strips (303) is fitted with a guide support strip (304). A fixing strip (305) is installed on the outside of the embedded insulating strip (303), and a plurality of gas-liquid storage cavities (306) are equidistantly opened on the inside of the fixing strip (305). An elastic extrusion plate (307) is installed in the middle of the inner side of the gas-liquid storage cavity (306), and a number of extrusion and crushing membranes (308) are equidistantly bonded to one end of the gas-liquid storage cavity (306). A plurality of inner arc semiconducting sheets (309) are laid at equal intervals on the outer side of the fixed locking strip (305), and a double concave arc strip (310) is installed on the outer side of the inner arc semiconducting sheet (309). The double concave arc strip (310) has several external filling holes (311) equidistantly opened at one end.

2. A high-voltage cable with a connector according to claim 1, characterized in that, The longitudinal section of the metal shielding strip (301) and the elastic extrusion plate (307) is arc-shaped. The guide support strip (304) and the embedded insulating strip (303) are both placed inside the outer insulating sleeve (1). The inner diameter of the double concave arc strip (310) is equal to the outer diameter of the inner arc semiconducting sheet (309).

3. A high-voltage cable with a connector according to claim 1, characterized in that, One end of the double concave arc strip (310) is bonded with an elastic internal pressure tube (312). The outer end of the elastic internal pressure tube (312) is equidistantly sleeved with a number of one-way compression bags (313), and the outer end of the one-way compression bag (313) is sleeved with an integrated insulating tube (314). Several protective semiconducting sheets (315) are laid at equal intervals on the outer side of the integrated insulating tube (314). The outer insulating sleeve (1) is fitted with a cold shrink compression tube (316) at the outer end, and threaded compression sleeves (317) are symmetrically arranged on the inner side of the cold shrink compression tube (316). The threaded clamping sleeve (317) is fitted with a pressing adapter (318) on its side end. The pressing adapter (318) and the outer end of the threaded clamping sleeve (317) are fitted with a number of insulating sheets (319) at equal intervals. Several processed semiconducting sheets (320) are laid on the outer end of the bonding insulating sheet (319). The outer end of the threaded clamping sleeve (317) is fitted with an outer clamping combination sleeve (322) by a fixing bolt (321), and an insulating pad (323) is sleeved on one side of the threaded clamping sleeve (317). A compression sealing gasket (324) is installed on the inner side of the cold shrink compression tube (316) at the position corresponding to the outer clamping sleeve (322).

4. A high-voltage cable with a connector according to claim 3, characterized in that, There are four double concave arc strips (310), the outer end of the protective semi-conductive sheet (315) is attached to the inner end of the inner solid insulating sleeve (302), and the inner end of the threaded compression sleeve (317) is fitted and connected to the outer protective insulating sleeve (1).

5. A high-voltage cable with a connector according to claim 3, characterized in that, The two press-fit adapters (318) are engaged with each other at one end. The longitudinal section of one end of the threaded clamping sleeve (317) and the press-fit adapter (318) is hexagonal. The bonding insulating sheet (319) has three layers.

6. A high-voltage cable with a connector according to claim 3, characterized in that, The longitudinal section of the processed semiconducting sheet (320) is arc-shaped, and one end of the two outer clamping sleeves (322) are attached together. The side end of the pressing sealing gasket (324) is attached to the side end of the outer clamping sleeve (322).

7. A high-voltage cable with a connector according to claim 1, characterized in that, An external component (4) is provided on the side end of the transmission core (2). The external component (4) includes a power connector (401). One end of the transmission core (2) is fitted with a power connection assembly head (401), and a combined cold shrink tube (402) is provided on the side end of the power connection assembly head (401). The combined cold shrink tubing (402) is symmetrically provided with a support closing sleeve (403) on the inner side, and an elastic insulating ring (404) is snapped into the side end of the support closing sleeve (403). A press-fit fixing tube (405) is installed between the two elastic insulating rings (404), and an outer protective insulating pad (406) is symmetrically snapped onto the outside of the press-fit fixing tube (405). The outer insulating pad (406) has several linkage shielding strips (407) laid at equal intervals on its outer end, and the linkage shielding strips (407) are fitted with inner clamping sleeves (408) on their outer ends. The inner fixing sleeve (408) is symmetrically connected to a porous injection tube (409) through the inner side, and an isolation limiting membrane (410) is installed at one end of the inner side of the porous injection tube (409). The inner clamping sleeve (408) is symmetrically equipped with lifting springs (411), and an impact crusher (412) is installed at one end of the lifting spring (411).

8. A high-voltage cable with a connector according to claim 7, characterized in that, One end of the support closing sleeve (403) is fitted and connected to one end of the outer insulating sleeve (1), the side end of the elastic insulating ring (404) is fitted and connected to the side end of the conveying core (2), and the longitudinal section of the inner clamping fixing sleeve (408) is arc-shaped.

9. A high-voltage cable with a connector according to claim 7, characterized in that, The inner wall of the combined cold shrink tubing (402) is bonded with a closed shielding strip (413), and an internal pressure fixing block (414) is installed on the inner side of the closed shielding strip (413). A number of isolation insulating blocks (415) are equidistantly sleeved on the inner side of one of the supporting closed sleeves (403). The impact crusher (412) is slidably installed inside the inner clamping sleeve (408). There are two inner clamping sleeves (408). The longitudinal section of the impact crusher (412) is I-shaped.

10. A high-voltage cable with a connector according to claim 9, characterized in that, The internal pressure fixing block (414) is attached to the side end of the impact crusher (412), the internal pressure fixing block (414) is slidably placed between the two support closing sleeves (403), and the side end of the isolation insulating block (415) is attached to the outer end of the power connection assembly head (401).

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