A 110kV cross-linked polyethylene insulated power cable

Abstract

The invention discloses a 110kV cross-linked polyethylene insulation material power cable, which relates to the technical field of cables and comprises an electric core, wherein a cross-linked polyethylene insulation layer is sleeved on the outer side of the electric core, an inner temperature-averaging copper foil is sleeved on the outer side of the cross-linked polyethylene insulation layer, an arc-shaped slot plate is bonded to the outer side of the inner temperature-averaging copper foil, a filling slot is provided on the inner side of the arc-shaped slot plate, the inner side of the filling slot is filled with aerogel, a sliding slot plate is clamped on the outer side of the arc-shaped slot plate, and an arc-shaped rod is clamped at the inner middle position of the inner slide slot. The invention has a scientific and reasonable structure and is safe and convenient to use. The cross-linked polyethylene insulation layer is insulated by dissipating heat through the aerogel, and the embrittlement speed of the cross-linked polyethylene insulation layer is effectively slowed down, thereby continuously extending the service life of the cross-linked polyethylene insulation layer, and a large amount of heat is also generated by the continuous sliding of the friction plate at night, and at this time, the heat is continuously conducted to the cross-linked polyethylene insulation layer, thereby performing heat insulation.

Description

Technical Field

[0001] The invention relates to the technical field of cables, in particular to a 110kV cross-linked polyethylene insulation material power cable. Background Art

[0002] Cross-linked polyethylene insulated cable is a cable suitable for distribution network and high-voltage transmission and other fields. It has advantages that PVC insulated cable cannot match. It has simple structure, light weight, good heat resistance, strong load capacity, no melting, chemical corrosion resistance, and high mechanical strength. However, in extremely cold weather, under extremely low temperature conditions, the insulation material of the cable may become brittle, resulting in a decrease in insulation performance. Especially for some conventional insulation materials, low temperature may make them more fragile, thereby reducing the voltage resistance of the cable;

[0003] The thermal insulation performance of existing power transmission cables is mostly weak, which leads to the brittleness of the insulation material of the cables in some extremely cold weather. In some high-cold areas, the cables will shake with strong winds. At this time, the brittle insulation layer will be in danger of breaking, causing cable damage and affecting power transmission. In order to avoid the above technical problems, it is indeed necessary to provide a 110kV cross-linked polyethylene insulation material power cable to overcome the above defects in the prior art. Summary of the invention

[0004] The present invention provides a 110kV cross-linked polyethylene insulated power cable, which can effectively solve the problem that the thermal insulation performance of the existing power transmission cables mentioned in the above background technology is mostly weak, which leads to the brittleness of the insulation material of the cable in some extremely cold weather. In some high-cold areas, the cable will shake with strong winds. At this time, the brittle insulation layer will be in danger of rupture, thereby causing cable damage and affecting power transmission.

[0005] To achieve the above object, the present invention provides the following technical solution: a kV cross-linked polyethylene insulation material power cable, comprising a battery core, the outer side of the battery core is sleeved with a constant temperature component;

[0006] The thermostatic assembly includes a cross-linked polyethylene insulation layer;

[0007] The outer side of the battery core is sleeved with a cross-linked polyethylene insulation layer, the outer side of the cross-linked polyethylene insulation layer is sleeved with an inner temperature-averaging copper foil, the outer side of the inner temperature-averaging copper foil is bonded with an arc-shaped slot plate, the inner side of the arc-shaped slot plate is provided with a filling slot, the inner top of the filling slot is bonded with an arc-shaped mounting plate, and the inner side of the filling slot is filled with air gel;

[0008] A temperature conducting hole is provided on the inner side of the arc-shaped mounting plate, a supporting groove plate is welded to the bottom end of the arc-shaped mounting plate, a clamping groove is provided on the top end of the arc-shaped mounting plate, a sliding hole is provided through the top end of the arc-shaped mounting plate at a position corresponding to the clamping groove, and a heat expansion strip is embedded in the inner side of the clamping groove;

[0009] An opening and closing plate is slidably connected to the inner side of the filling groove at the top of the arc-shaped mounting plate, a sliding rod is installed at the bottom end of the opening and closing plate, a return spring is sleeved on the outer side of the sliding rod, and a connecting piece is welded to the bottom end of the sliding rod;

[0010] The outer side of the arc-shaped groove plate is clamped with a sliding groove plate, the inner side of the sliding groove plate is provided with an inner sliding groove, an arc-shaped rod is clamped at the inner middle position of the inner side of the inner sliding groove, a pulling spring is sleeved on the outer side of the arc-shaped rod, a friction plate is slidably sleeved at the outer middle position of the outer side of the arc-shaped rod, a heat-expanding rod is embedded at the inner side of the sliding groove plate corresponding to the friction plate, a positioning groove is provided at the outer side of the friction plate corresponding to the heat-expanding rod, an outer insulating layer is sleeved on the outer side of the sliding groove plate, and a temperature-averaging block is installed on the inner side of the filling groove.

[0011] According to the above technical solution, the diameter of the battery core is equal to the inner diameter of the cross-linked polyethylene insulation layer;

[0012] The diameter of the cross-linked polyethylene insulation layer is equal to the inner diameter of the inner temperature-averaging copper foil;

[0013] The outer side of the inner temperature-averaging copper foil is evenly coated with insulating heat-dissipating oil.

[0014] .According to the above technical solution, there are several arc-shaped slot plates, which are clamped at equal angles on the outside of the inner temperature-averaging copper foil; there are several groups of arc-shaped slot plates, which are installed at equal distances on the outside of the inner temperature-averaging copper foil.

[0015] According to the above technical solution, there are several temperature-averaging blocks, and the temperature-averaging blocks are installed at the inner bottom of the arc-shaped trough plate at equal angles;

[0016] The aerogel is in full contact with the temperature-isolating block.

[0017] .According to the above technical solution, there are a plurality of the thermal conduction holes, which are evenly penetrated and opened on the inner side of the arc-shaped mounting plate, and there are two clamping grooves, which are symmetrically opened at the outer side of the arc-shaped mounting plate.

[0018] According to the above technical solution, two sliding rods are provided, and the two sliding rods are symmetrically installed at the bottom end of the opening and closing plate and at the corresponding positions of the sliding hole;

[0019] One end of the return spring is spot welded to the bottom end of the arc-shaped mounting plate, and the other end of the return spring is spot welded to the connecting piece.

[0020] According to the above technical solution, the inner side of the friction plate and the corresponding position of the arc rod are coated with insulating oil, and the sliding slot plates are grouped in pairs;

[0021] The two sliding slot plates are symmetrically installed on the outer side of the arc slot plate. The sliding slot plates are arranged in a plurality of groups, and the plurality of groups are equidistantly installed on the outer side of the arc slot plate.

[0022] According to the above technical solution, a protective component is sleeved on the outer side of the outer insulating layer;

[0023] The protection assembly includes a bottom clamping ring;

[0024] The outer side of the outer insulating layer is clamped with a bottom clamping ring, the outer side of the bottom clamping ring is welded with a mounting threaded plate, and the outer side of the outer insulating layer is clamped with a top clamping ring at a position symmetrical to the bottom clamping ring;

[0025] The outer side of the bottom clamping ring is clamped with a bottom guard plate, one end face of the bottom guard plate is welded with a limit strip, a limit groove is provided at the inner top position of the limit strip, the top end of the top clamping ring is clamped with a top guard plate, one end face of the top guard plate is welded with a limit column at a position corresponding to the limit groove, the other end face of the top guard plate is welded with a threaded connection plate, and the inner side of the threaded connection plate is threadedly connected with a fixing nut;

[0026] A bottom box is welded to the bottom end of the bottom guard plate, an inertia spring is spot-welded on the inner side of the bottom box, a return counterweight is sleeved on the outer side of the inertia spring, and a shaking cavity is opened on the inner side of the bottom box.

[0027] . According to the above technical solution, there are two limit bars, which are symmetrically welded on one end surface of the bottom guard plate, and there are two threaded connecting plates, which are symmetrically installed on one end surface of the top guard plate.

[0028] .According to the above technical solution, one end of the inertia spring is spot welded to the bottom guard plate, and the other end of the inertia spring is spot welded to the inner bottom end of the bottom box.

[0029] Compared with the prior art, the present invention has the following beneficial effects: the present invention has a scientific and reasonable structure and is safe and convenient to use:

[0030] 1. A constant temperature component is provided. When the thermal expansion strip expands on the inner side of the clamping groove, the opening and closing plate is propped up. After the opening and closing plate is raised, a large amount of heat will be transferred to the inside of the aerogel through the temperature equalizing block, thereby continuously and effectively heating the aerogel evenly, allowing the aerogel to store heat, accelerating the rapid dissipation of heat while storing heat, preventing the increase in the resistance of the battery cell caused by high temperature, reducing power transmission losses, and improving energy utilization efficiency. When the power consumption is low, the thermal conductive hole is closed to reduce the heat loss channel, and then the heat is dissipated through the aerogel to insulate the cross-linked polyethylene insulation layer, effectively slowing down the embrittlement rate of the cross-linked polyethylene insulation layer, thereby continuously extending the life of the cross-linked polyethylene insulation layer;

[0031] At night, the constant sliding of the friction plate will also generate a lot of heat. At this time, this heat will continue to be transmitted to the cross-linked polyethylene insulation layer, thereby keeping warm. When the friction plate shakes, it will offset part of the cable shaking due to inertia, thereby reducing the amplitude of the cable shaking, preventing the cable from breaking and poor terminal contact due to large shaking, effectively protecting the cable and ensuring power transmission efficiency.

[0032] 2. A protection component is provided. By inserting the limit column on one side of the top guard plate into the inner position of the limit groove, and then tightening the threaded connecting plate to the other end face of the bottom guard plate through the fixing nut, the operator only needs to tighten the two fixing nuts to complete the cable laying, and the operator does not need to extend the installation tool to the side close to the wall, which is convenient for the operator to install, thereby improving the cable laying and installation efficiency. The top guard plate and the bottom guard plate drive the bottom box to swing on the outside of the bottom clamping ring, thereby offsetting the shaking of the cable, and under the action of inertia, the inertia spring and the return counterweight block can reduce the shaking amplitude of the bottom box, thereby preventing the cable from being deformed or even displaced due to the large shaking amplitude of the cable, preventing the cable from being damaged or broken, and ensuring the continuous and effective operation of power transmission.

[0033] To sum up, when the friction plate shakes, inertia will offset part of the cable shaking, thereby reducing the amplitude of the cable shaking, preventing the cable from breaking and poor terminal contact due to large shaking, and effectively protecting the cable. The top guard plate and the bottom guard plate drive the bottom box to shake on the outside of the bottom clamping ring, thereby offsetting the cable shaking, and under the action of inertia, the inertia spring and the return counterweight can reduce the shaking amplitude of the bottom box, thereby ensuring the stability of the cable installation in a variety of usage environments and preventing the cable from breaking and damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0035] In the attached picture:

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

[0037] Figure 2 It is a schematic diagram of the installation structure of the present invention;

[0038] Figure 3 It is a schematic diagram of the installation structure of the present invention;

[0039] Figure 4 It is a schematic diagram of the installation structure of the present invention;

[0040] Figure 5 It is a schematic diagram of the installation structure of the present invention;

[0041] Figure 6 It is a schematic diagram of the installation structure of the present invention;

[0042] Figure 7 It is a schematic diagram of the installation structure of the present invention;

[0043] Figure 8 It is a schematic diagram of the installation structure of the present invention;

[0044] Fig. 9 It is a schematic diagram of the installation structure of the present invention;

[0045] Fig.10 It is a schematic diagram of the installation structure of the present invention;

[0046] Numbers in the figure: 1, battery cell;

[0047] 2. Constant temperature assembly; 201. Cross-linked polyethylene insulation layer; 202. Inner temperature-averaging copper foil; 203. Arc-shaped slot plate; 204. Filling slot; 205. Arc-shaped mounting plate; 206. Air gel; 207. Temperature conducting hole; 208. Support slot plate; 209. Snap-in slot; 210. Sliding hole; 211. Thermal expansion strip; 212. Opening and closing plate; 213. Sliding rod; 214. Reset spring; 215. Connecting piece; 216. Sliding slot plate; 217. Inner slide; 218. Arc-shaped rod; 219. Pull spring; 220. Friction plate; 221. Thermal expansion rod; 222. Positioning slot; 223. Outer insulation layer; 224. Temperature-averaging block;

[0048] 3. Protection assembly; 301. Bottom clamping ring; 302. Mounting threaded plate; 303. Top clamping ring; 304. Bottom guard plate; 305. Limiting strip; 306. Limiting groove; 307. Top guard plate; 308. Limiting column; 309. Threaded connecting plate; 310. Fixing nut; 311. Bottom box; 312. Inertia spring; 313. Return weight block; 314. Shaking cavity. DETAILED DESCRIPTION

[0049] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0050] Example: Figure 1-10 As shown, the present invention provides a technical solution, a 110kV cross-linked polyethylene insulation material power cable, comprising a battery core 1, and a constant temperature component 2 is sleeved on the outer side of the battery core 1;

[0051] The constant temperature component 2 includes a cross-linked polyethylene insulation layer 201, an inner temperature-averaging copper foil 202, an arc-shaped slot plate 203, a filling slot 204, an arc-shaped mounting plate 205, an air gel 206, a temperature-conducting hole 207, a supporting slot plate 208, a snap-in slot 209, a sliding hole 210, a thermal expansion strip 211, an opening and closing plate 212, a sliding rod 213, a reset spring 214, a connecting piece 215, a sliding slot plate 216, an inner sliding slot 217, an arc-shaped rod 218, a pulling spring 219, a friction plate 220, a thermal expansion rod 221, an outer insulation layer 223 and a temperature-averaging block 224;

[0052] The outer side of the battery core 1 is sleeved with a cross-linked polyethylene insulation layer 201, and the outer side of the cross-linked polyethylene insulation layer 201 is sleeved with an inner temperature-averaging copper foil 202. The diameter of the battery core 1 is equal to the inner diameter of the cross-linked polyethylene insulation layer 201, and the diameter of the cross-linked polyethylene insulation layer 201 is equal to the inner diameter of the inner temperature-averaging copper foil 202. The outer side of the inner temperature-averaging copper foil 202 is evenly coated with insulating heat dissipation oil to facilitate uniform heat transfer. The outer side of the inner temperature-averaging copper foil 202 is bonded with an arc groove plate 203, and a plurality of arc groove plates 203 are provided. The plurality of arc groove plates 203 are clamped at equal angles on the inner temperature-averaging copper foil 20 2, a plurality of groups of arc-shaped slot plates 203 are arranged, and a plurality of groups of arc-shaped slot plates 203 are equidistantly installed on the outer side of the inner temperature-averaging copper foil 202, which is conducive to heat preservation. A filling slot 204 is opened on the inner side of the arc-shaped slot plate 203, and an arc-shaped mounting plate 205 is bonded to the inner top of the filling slot 204. The inner side of the filling slot 204 is filled with air gel 206. A plurality of temperature-averaging blocks 224 are arranged, and a plurality of temperature-averaging blocks 224 are installed at the inner bottom of the arc-shaped slot plate 203 at equal angles. The air gel 206 is fully in contact with the temperature-averaging block 224, which is convenient for rapid heat transfer.

[0053] A heat conducting hole 207 is provided on the inner side of the arc-shaped mounting plate 205, a supporting groove plate 208 is welded to the bottom end of the arc-shaped mounting plate 205, a snap-in groove 209 is provided on the top end of the arc-shaped mounting plate 205, a sliding hole 210 is provided through the top end of the arc-shaped mounting plate 205 and the corresponding position of the snap-in groove 209, a heat expansion strip 211 is embedded in the inner side of the snap-in groove 209, and an opening and closing plate 212 is slidably connected to the inner side of the filling groove 204 at the top position of the arc-shaped mounting plate 205, a plurality of heat conducting holes 207 are provided, and a plurality of heat conducting holes 207 are evenly provided on the inner side of the arc-shaped mounting plate 205, and the snap-in groove 209 is provided. There are two, two snap-in grooves 209 are symmetrically arranged at the outer side of the arc-shaped mounting plate 205, which is conducive to the movement of the opening and closing plate 212. A sliding rod 213 is installed at the bottom end of the opening and closing plate 212, and a return spring 214 is sleeved on the outer side of the sliding rod 213. A connecting piece 215 is welded to the bottom end of the sliding rod 213. Two sliding rods 213 are provided, and the two sliding rods 213 are symmetrically installed at the bottom end of the opening and closing plate 212 and the corresponding position of the sliding hole 210. One end of the return spring 214 is spot welded to the bottom end of the arc-shaped mounting plate 205, and the other end of the return spring 214 is spot welded to the connecting piece 215 to prevent heat loss;

[0054] The outer side of the arc groove plate 203 is clamped with a sliding groove plate 216, and the inner side of the sliding groove plate 216 is provided with an inner groove 217. The inner middle position of the inner groove 217 is clamped with an arc rod 218, and the outer side of the arc rod 218 is sleeved with a pull spring 219. The outer middle position of the arc rod 218 is slidably sleeved with a friction plate 220. The inner side of the friction plate 220 and the corresponding position of the arc rod 218 are coated with insulating oil. The sliding groove plates 216 are grouped in pairs, and the two sliding groove plates 216 Symmetrically installed on the outer side of the arc groove plate 203, the sliding groove plate 216 is provided with several groups, and the several groups are equidistantly installed on the outer side of the arc groove plate 203 to facilitate friction heat insulation. A heat expansion rod 221 is embedded in the inner side of the sliding groove plate 216 at the position corresponding to the friction plate 220, and a positioning groove 222 is opened at the outer side of the friction plate 220 at the position corresponding to the heat expansion rod 221. The outer side of the sliding groove plate 216 is sleeved with an outer insulating layer 223, and a temperature equalizing block 224 is installed on the inner side of the filling groove 204.

[0055] The outer side of the outer insulating layer 223 is sleeved with a protection component 3;

[0056] The protection assembly 3 includes a bottom clamping ring 301, a mounting threaded plate 302, a top clamping ring 303, a bottom guard plate 304, a limiting strip 305, a limiting groove 306, a top guard plate 307, a limiting column 308, a threaded connecting plate 309, a fixing nut 310, a bottom box 311, an inertia spring 312, a return weight block 313 and a shaking chamber 314;

[0057] A bottom clamping ring 301 is clamped on the outer side of the outer insulating layer 223, and a mounting threaded plate 302 is welded on the outer side of the bottom clamping ring 301. A top clamping ring 303 is clamped on the outer side of the outer insulating layer 223 at a symmetrical position to the bottom clamping ring 301, and a bottom guard plate 304 is clamped on the outer side of the bottom clamping ring 301. A limiting strip 305 is welded on one end face of the bottom guard plate 304, and a limiting groove 306 is provided at the inner top position of the limiting strip 305. A top guard plate 307 is clamped on the top of the top clamping ring 303, and a limiting column 308 is welded at a position corresponding to the limiting groove 306 on one end face of the top guard plate 307, and a threaded connecting plate 309 is welded on the other end face of the top guard plate 307. Two limiting strips 305 are provided, and the two limiting strips 305 have two limiting strips. The strip 305 is symmetrically welded on one side end face of the bottom guard plate 304, and two threaded connecting plates 309 are provided. The two threaded connecting plates 309 are symmetrically installed on one side end face of the top guard plate 307, which is conducive to fixing the bottom guard plate 304 and the top guard plate 307. The inner side of the threaded connecting plate 309 is threadedly connected with a fixing nut 310, and a bottom box 311 is welded to the bottom end of the bottom guard plate 304. An inertia spring 312 is spot welded on the inner side of the bottom box 311, and a return counterweight 313 is sleeved on the outer side of the inertia spring 312. A shaking cavity 314 is opened on the inner side of the bottom box 311, one end of the inertia spring 312 is spot welded to the bottom guard plate 304, and the other end of the inertia spring 312 is spot welded to the inner bottom end of the bottom box 311 to reduce shaking.

[0058] The working principle and use process of the present invention are as follows: First, after the cross-linked polyethylene insulation material power cable is installed, it will transmit electricity according to demand. During the peak period of electricity consumption in the daytime, electricity will be continuously transmitted, so that the cable will be continuously used for power transmission. At this time, the battery core 1 will generate a large amount of heat when used during the day, and the external sunlight will continue to irradiate the outer insulation layer 223 for a long time, so that the entire cable will absorb a large amount of heat. This heat will continue to be transmitted to the position of the heat-expandable rod 221 and the heat-expandable strip 211. After being heated, the heat-expandable rod 221 and the heat-expandable strip 211 will expand due to the heat. When the heat-expandable strip 211 expands on the inner side of the clamping groove 209, the heat-expandable strip 211 will prop up the opening and closing plate 212. At this time, the opening and closing plate 212 will overcome the reset spring 21 4, and thus rises upward. After the opening and closing plate 212 rises, a large amount of heat will be transferred to the inside of the air gel 206 through the temperature-averaging block 224, and then the heat will be transferred to the inside of the arc-shaped slot plate 203 through the air gel 206. Finally, the heat will be dissipated to the outside through the thermal conductive hole 207. At this time, the purpose of heat dissipation is achieved, and the air gel 206 is always heated continuously and evenly during the continuous heat dissipation process. At this time, the inside of the air gel 206 will absorb and accumulate a large amount of heat, and the heat-expanding rod 221 will also expand after being heated. At this time, a part of the heat-expanding rod 221 will be clamped to the inside of the positioning groove 222, so that the friction plates 220 on both sides are fixed, so that the friction plates 220 will not slide on the inside of the inner slide groove 217;

[0059] When the high-cold area enters night, the external temperature will drop sharply. At this time, the heat generated by the battery cell 1 will continue to dissipate quickly, thereby keeping the cross-linked polyethylene insulation layer 201 warm. When the electricity consumption enters the low period, the heat generated by the battery cell 1 will decrease. At this time, the external cold environment will first cause the heat expansion strip 211 to shrink due to the cold, thereby shrinking back into the inner side of the clamping groove 209. Then, under the action of the return spring 214 on the inner side of the support groove plate 208, the return spring 214 will pull the sliding rod 213 downward through the connecting piece 215. At this time, the sliding rod 213 will slide to the bottom on the inner side of the sliding hole 210, thereby re-clamping the opening and closing plate 212 to the top of the arc-shaped mounting plate 205, thereby reducing the heat dissipation from the thermal conduction hole 207. Then the air condenses. The heat stored in the glue 206 will be transferred to the outside of the inner temperature-averaging copper foil 202 through the temperature-averaging block 224, so as to continuously keep the cross-linked polyethylene insulation layer 201 warm. At the same time, the heat-expanding rod 221 will also shrink after being cooled. At this time, the friction plate 220 will not be clamped. Then, the cable will shake due to the wind at high altitude. Then, the friction plates 220 on both sides will slide and rub back and forth on the outside of the inner arc rod 218 of the inner slide groove 217, and reset by pulling the spring 219. After reset, they will rub again, which will generate a certain amount of heat, which will be continuously conducted inward. Then, this heat will protect the cross-linked polyethylene insulation layer 201. The heat-expanding strip 211 and the heat-expanding rod 221 are both made of aluminum-nickel alloy.

[0060] When the thermal expansion strip 211 expands on the inner side of the clamping groove 209, the opening and closing plate 212 is propped up. After the opening and closing plate 212 rises, a large amount of heat will be transferred to the inside of the air gel 206 through the temperature equalizing block 224, so as to continuously and effectively heat the air gel 206 evenly, so that the air gel 206 can store heat, accelerate the rapid dissipation of heat, and store heat at the same time, thereby preventing the increase of the resistance of the battery cell 1 caused by high temperature, reducing power transmission losses, and improving energy utilization efficiency. In addition, when the power consumption is low, the temperature conducting hole 207 is closed to reduce the heat loss channel, and then the heat is dissipated through the air gel 206. The cross-linked polyethylene insulation layer 201 is insulated, and the embrittlement speed of the cross-linked polyethylene insulation layer 201 is effectively slowed down, thereby continuously extending the life of the cross-linked polyethylene insulation layer 201. At night, the friction plate 220 continuously slides and generates a large amount of heat. At this time, the heat is continuously transferred to the cross-linked polyethylene insulation layer 201, thereby maintaining heat. When the friction plate 220 shakes, the inertia will offset part of the shaking of the cable, thereby reducing the amplitude of the cable shaking, preventing the cable from breaking and poor terminal contact due to large-scale shaking, effectively protecting the cable, and thus ensuring the power transmission efficiency;

[0061] Next, when using cables in some subway tunnels, first fix the installation threaded plate 302 on the inner wall of the tunnel where it needs to be installed, then place the cable on the top of the bottom clamping ring 301, then buckle the top clamping ring 303 at the top position of the cable, and then place the bottom guard plate 304 against the bottom end of the bottom clamping ring 301. The operator inserts the limiting column 308 on one side of the top guard plate 307 into the inner position of the limiting groove 306, and then tightens the threaded connecting plate 309 to the other side end face of the bottom guard plate 304 through the fixing nut 310. At this time, the operator only needs to tighten the two fixing nuts 310 to complete the clamping installation of the top guard plate 307 and the bottom guard plate 304 without the operator having to When the installation tool is extended to the side close to the wall, it is convenient for operators to install, thereby improving the laying and installation efficiency of the cable. Later, when the subway train is running, a lot of shaking will occur when passing through the cable. At this time, because the top guard plate 307 and the bottom guard plate 304 form a whole, the bottom box 311 can be driven by the top guard plate 307 and the bottom guard plate 304 to shake on the outside of the bottom clamping ring 301, thereby offsetting the shaking of the cable, and under the action of inertia, the inertia spring 312 and the return counterweight block 313 can reduce the shaking amplitude of the bottom box 311, thereby preventing the cable from being deformed or even displaced due to a large shaking amplitude of the cable, preventing the cable from being damaged or broken, and ensuring the continuous and effective operation of power transmission;

[0062] By inserting the limiting column 308 on one side of the top guard plate 307 into the inner position of the limiting groove 306, and then tightening the threaded connecting plate 309 to the other side end face of the bottom guard plate 304 through the fixing nut 310, the operator only needs to tighten the two fixing nuts 310 to complete the cable laying, and the operator does not need to extend the installation tool to the side close to the wall, which is convenient for the operator to install, thereby improving the cable laying and installation efficiency. The top guard plate 307 and the bottom guard plate 304 drive the bottom box 311 to swing on the outside of the bottom clamping ring 301, thereby offsetting the shaking of the cable, and under the action of inertia, the inertia spring 312 and the return counterweight block 313 can reduce the shaking amplitude of the bottom box 311, thereby preventing the cable from being deformed or even displaced due to the large shaking amplitude of the cable, preventing the cable from being damaged or broken, and ensuring the continuous and effective operation of power transmission.

[0063] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A 110 kV cross-linked polyethylene insulated power cable, comprising a core (1), characterized in that: The outer side of the battery core (1) is sleeved with a constant temperature component (2); The constant temperature component (2) comprises a cross-linked polyethylene insulation layer (201); The outer side of the battery core (1) is sleeved with a cross-linked polyethylene insulation layer (201), the outer side of the cross-linked polyethylene insulation layer (201) is sleeved with an inner temperature-averaging copper foil (202), the outer side of the inner temperature-averaging copper foil (202) is bonded with an arc-shaped slot plate (203), the inner side of the arc-shaped slot plate (203) is provided with a filling slot (204), the inner top of the filling slot (204) is bonded with an arc-shaped mounting plate (205), and the inner side of the filling slot (204) is filled with air gel (206); A heat conducting hole (207) is provided on the inner side of the arc-shaped mounting plate (205); a supporting groove plate (208) is welded to the bottom end of the arc-shaped mounting plate (205); a clamping groove (209) is provided on the top end of the arc-shaped mounting plate (205); a sliding hole (210) is provided through the top end of the arc-shaped mounting plate (205) at a position corresponding to the clamping groove (209); and a heat expansion strip (211) is embedded on the inner side of the clamping groove (209); An opening and closing plate (212) is slidably connected to the inner side of the filling groove (204) at the top position of the arc-shaped mounting plate (205), a sliding rod (213) is installed at the bottom end of the opening and closing plate (212), a return spring (214) is sleeved on the outer side of the sliding rod (213), and a connecting piece (215) is welded to the bottom end of the sliding rod (213); The outer side of the arc-shaped slot plate (203) is clamped with a sliding slot plate (216), the inner side of the sliding slot plate (216) is provided with an inner sliding slot (217), an arc-shaped rod (218) is clamped at the middle position of the inner side of the inner sliding slot (217), a pulling spring (219) is sleeved on the outer side of the arc-shaped rod (218), a friction plate (220) is slidably sleeved at the middle position of the outer side of the arc-shaped rod (218), a heat-expandable rod (221) is embedded at a position on the inner side of the sliding slot plate (216) corresponding to the friction plate (220), a positioning slot (222) is provided on the outer side of the friction plate (220) corresponding to the heat-expandable rod (221), an outer insulating layer (223) is sleeved on the outer side of the sliding slot plate (216), and a temperature-averaging block (224) is installed on the inner side of the filling slot (204).

2. A 110 kV cross-linked polyethylene insulated power cable according to claim 1, characterized in that: The diameter of the battery core (1) is equal to the inner diameter of the cross-linked polyethylene insulation layer (201); The diameter of the cross-linked polyethylene insulation layer (201) is equal to the inner diameter of the inner temperature-averaging copper foil (202); The outer side of the internal temperature-averaging copper foil (202) is evenly coated with insulating heat dissipation oil.

3. A 110 kV cross-linked polyethylene insulated power cable according to claim 1, characterized in that: A plurality of the arc-shaped slot plates (203) are provided, and the plurality of arc-shaped slot plates (203) are clamped at equal angles on the outside of the inner temperature-averaging copper foil (202); a plurality of groups of the arc-shaped slot plates (203) are provided, and the plurality of groups of arc-shaped slot plates (203) are installed at equal distances on the outside of the inner temperature-averaging copper foil (202).

4. A 110 kV cross-linked polyethylene insulated power cable according to claim 1, characterized in that: A plurality of the temperature-averaging blocks (224) are provided, and the plurality of temperature-averaging blocks (224) are installed at equal angles at the inner bottom of the arc-shaped slot plate (203); The aerogel (206) is in full contact with the temperature-isolating block (224).

5. A 110 kV cross-linked polyethylene insulated power cable according to claim 1, characterized in that: A plurality of the thermal conduction holes (207) are provided, and the plurality of thermal conduction holes (207) are evenly penetrated and provided on the inner side of the arc-shaped mounting plate (205). Two clamping grooves (209) are provided, and the two clamping grooves (209) are symmetrically provided at the outer side of the arc-shaped mounting plate (205).

6. A 110 kV cross-linked polyethylene insulated power cable according to claim 1, characterized in that: Two sliding rods (213) are provided, and the two sliding rods (213) are symmetrically installed at positions corresponding to the bottom end of the opening and closing plate (212) and the sliding hole (210); One end of the return spring (214) is spot welded to the bottom end of the arc-shaped mounting plate (205), and the other end of the return spring (214) is spot welded to the connecting plate (215).

7. A 110 kV cross-linked polyethylene insulated power cable according to claim 1, characterized in that: Insulating oil is applied to the inner side of the friction plate (220) and the corresponding position of the arc rod (218), and the sliding slot plates (216) are grouped in pairs. The two sliding slot plates (216) are symmetrically mounted on the outer side of the arc-shaped slot plate (203), and the sliding slot plates (216) are provided in a plurality of groups, which are equidistantly mounted on the outer side of the arc-shaped slot plate (203).

8. The 110 kV cross-linked polyethylene insulated power cable according to claim 1, characterized in that: The outer side of the outer insulating layer (223) is sleeved with a protective component (3); The protection component (3) comprises a bottom clamping ring (301); A bottom clamping ring (301) is clamped on the outer side of the outer insulating layer (223), a mounting threaded plate (302) is welded on the outer side of the bottom clamping ring (301), and a top clamping ring (303) is clamped on the outer side of the outer insulating layer (223) at a position symmetrical to the bottom clamping ring (301); The bottom guard plate (304) is clamped on the outer side of the bottom clamping ring (301), a limiting strip (305) is welded on one end face of the bottom guard plate (304), a limiting groove (306) is provided at the inner top position of the limiting strip (305), a top guard plate (307) is clamped on the top end of the top clamping ring (303), a limiting column (308) is welded at a position corresponding to the limiting groove (306) on one end face of the top guard plate (307), a threaded connecting plate (309) is welded on the other end face of the top guard plate (307), and a fixing nut (310) is threadedly connected to the inner side of the threaded connecting plate (309); A bottom box (311) is welded to the bottom end of the bottom guard plate (304), an inertia spring (312) is spot-welded on the inner side of the bottom box (311), a return counterweight (313) is sleeved on the outer side of the inertia spring (312), and a shaking cavity (314) is provided on the inner side of the bottom box (311).

9. A 110 kV cross-linked polyethylene insulated power cable according to claim 8, characterized in that: Two limit bars (305) are provided, and the two limit bars (305) are symmetrically welded to one end surface of the bottom guard plate (304). Two threaded connection plates (309) are provided, and the two threaded connection plates (309) are symmetrically installed on one end surface of the top guard plate (307).

10. A 110 kV cross-linked polyethylene insulated power cable according to claim 8, characterized in that: One end of the inertia spring (312) is spot welded to the bottom guard plate (304), and the other end of the inertia spring (312) is spot welded to the inner bottom end of the bottom box (311).

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