Ice melting type overhead line for high-voltage power

Abstract

The invention discloses a high-voltage power ice-melting overhead line, and relates to the technical field of cables, a protective ice-melting assembly is mounted on the outer side of an inner wire, air outlet pipes uniformly penetrate through the outer side of an outer heating box, a silicon rubber ring is adhered to the interior of the outer heating box, a spiral heat conduction layer wraps the outer side of a middle insulating layer, and air holes are uniformly formed in the outer side of the spiral heat conduction layer. A spiral heat conduction layer is arranged on the outer side of the outer heating box, a heating wire is wound in a gap of the spiral heat conduction layer, the outer side of the spiral heat conduction layer is coated with an outer insulation layer, the outer side of the outer insulation layer is coated with a protective film, and an auxiliary deicing assembly is installed on the outer side of the protective film. When the internal air pressure is increased, the deformation grooves are pushed to bulge towards the outer side, under the dual effects of heating melting and inner side extrusion, an ice layer on the outer side of the cable is easier to crack and break away from the outer side of the overhead line, deicing is accelerated, the deicing efficiency is higher, and the mode needs less heat and consumes less energy.

Description

Technical Field

[0001] This invention relates to the field of cable technology, specifically to a high-voltage power de-icing type overhead line. Background Technology

[0002] Overhead lines mainly refer to exposed overhead lines, which are erected above the ground. They are power transmission lines that use insulators to fix the transmission conductors to towers that stand upright on the ground to transmit electrical energy. They are relatively easy to install and maintain, and have low costs, so overhead lines are widely used.

[0003] However, overhead lines are susceptible to weather and environmental factors that can cause malfunctions. For example, in cold weather, when it snows or rains, a thick layer of ice will condense on the outside of the cable, increasing the weight of the cable and putting a great burden on the cable and electrical fittings. This can easily lead to cable or electrical fitting breakage and cause safety accidents. However, de-icing is difficult, especially when the ice layer is thick. Using heating to de-ic, the energy consumption is high and the efficiency is low. Physical de-icing is difficult to operate and has low de-icing efficiency. Summary of the Invention

[0004] This invention provides a de-icing type overhead line for high-voltage power, which can effectively solve the problems of de-icing difficulties mentioned in the background art, especially when the ice layer is thick, the use of heating to de-ic, which consumes a lot of energy and is inefficient, and the physical de-icing operation is difficult and inefficient.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-voltage power de-icing type overhead line, comprising an inner conductor, wherein a protective de-icing assembly is installed on the outer side of the inner conductor, and the protective de-icing assembly includes an outer heat box; An external heating box is uniformly sleeved on the outside of the inner conductor, and an air outlet pipe is uniformly installed through the outside of the external heating box. A silicone rubber ring is bonded inside the external heating box. The outer sides of several of the external heating boxes are covered with a middle insulating layer, and a spiral heat-conducting layer is wrapped around the middle insulating layer. Ventilation holes are evenly opened on the outer side of the spiral heat-conducting layer. Heating wires are wound around the gaps in the spiral heat-conducting layer. An outer insulating layer is covered on the outer side of the spiral heat-conducting layer. Deformation grooves are evenly opened on the outer side of the outer insulating layer. A protective film is covered on the outer side of the outer insulating layer.

[0006] According to the above technical solution, the end face of the outer heat box is circular, a heat-conducting inner ring is embedded in the inner side of the outer heat box, the inner side of the heat-conducting inner ring is attached to the outer side of the inner wire, a heat-conducting outer ring is embedded in the inner side of the outer heat box, and an insulating layer is attached to the outer side of the heat-conducting outer ring.

[0007] According to the above technical solution, the middle insulating layer is provided with a breathable hole at the corresponding air outlet, and an insulating film is glued to one end of the air outlet.

[0008] According to the technical scheme, the inner conductor is uniformly filled with a filling layer outside the outer heat box, and the filling layer is internally provided with a reinforcing rod.

[0009] According to the technical scheme, the filling layer outside and the outer heat conduction ring outside are aligned, and the gas outlet pipe end and the outer insulation layer outside are in the same curved surface.

[0010] According to the technical scheme, the protective film outside is provided with an auxiliary deicing assembly, which comprises a left clamping ring; The left clamping ring is connected to one side of the protective film, and the top end of the left clamping ring is hingedly connected to a right clamping ring, and the top end and one side of the left clamping ring and the right clamping ring are welded with support protrusions, the inside of the support protrusions is slidably connected with a broken ice box, one end of the broken ice box is connected through a compression spring between one end of the inside of the support protrusion, the inside of the broken ice box is symmetrically rotatably installed with a broken ice wheel, and an ice melting groove is formed in the middle of the broken ice wheel. The bottom end of the left clamping ring and the right clamping ring is welded with a butt plate, the middle of the butt plate is provided with a plug-in hole, the plug-in hole is connected with a plug-in rod, and the plug-in rod is connected with a connecting nut through a thread.

[0011] According to the technical scheme, the left clamping ring and the right clamping ring are the same in shape and size, the plug-in rod is composed of a hexagonal prism and a screw rod, the plug-in hole is a regular hexagon, and the hexagonal prism end of the plug-in rod is attached to the inside of the plug-in hole.

[0012] According to the technical scheme, the plug-in rod is welded with a balance frame at the end away from the connecting nut, the balance frame is welded with a connecting frame at both ends, the top surface of the connecting frame is provided with a guide hole, the guide hole is slidably installed with a guide rod, the top end of the guide rod is fixedly installed with a damping block, the opposite surfaces between the damping block and the connecting frame are connected through a buffer spring, and the damping block is connected with a compression trolley on one side.

[0013] According to the technical scheme, the damping block is connected with a limiting plate on both sides, and the limiting plate is attached to the outside of the top end of the connecting frame.

[0014] According to the technical scheme, the compression trolley is installed with a contact wheel close to the side of the protective film, and the contact wheel is attached to the protective film.

[0015] Compared with the prior art, the beneficial effects of the present application are: 1. Equipped with a protective de-icing component, if ice forms on the outside of the cable, the power supply to the heating wire is turned on, and the heating wire begins to heat up and melt the ice layer near the protective film. Since the inner conductor also heats up during normal use, the heat from both is transferred to the outer heating box through the inner and outer heat-conducting rings. The air inside the silicone rubber ring and the outer heating box will expand due to the heat. Because the thermal expansion rate of the silicone rubber ring is higher than that of air, the air inside the outer heating box will be discharged from the vent pipe to the space between the middle and outer insulation layers due to the increased internal air pressure. Because the deformation groove is thinner, the increased internal air pressure will push the deformation groove to bulge outward. Under the dual action of heating and melting and inner compression, the ice layer on the outside of the cable is more likely to break and detach from the outside of the overhead line, accelerating de-icing and increasing de-icing efficiency. This method requires less heat and consumes less electricity.

[0016] 2. An auxiliary de-icing assembly is installed, with left and right retaining rings fitted onto the outside of the overhead line and the cable. The ice-crushing wheel contacts the ice layer. A compression trolley is installed, pulling the auxiliary de-icing assembly along the overhead line. During the movement, the rollers of the compression trolley always contact the outside of the overhead line and move up and down according to the thickness of the cable's outer side. The buffer spring deforms in coordination. During the movement, the ice-melting groove of the ice-crushing wheel compresses the outside of the ice layer, accelerating the breaking of the outer ice layer. When it moves to the deformation groove, the compression spring causes the ice-crushing wheel to impact the outside of the ice layer, accelerating the breaking of the ice layer and making the de-icing effect better. Different de-icing structures can be selected according to the thickness of the ice layer to further improve the de-icing effect and efficiency.

[0017] In summary, during the de-icing process, the deformation of the outer insulation layer at the deformation groove of the protective de-icing component accelerates the cracking of the ice layer at that location when it encounters the ice crushing wheel, due to the combined effect of internal and external factors. The two components can operate independently, and when used together, they will achieve a better de-icing and ice removal effect. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0019] In the attached diagram: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the protective de-icing component of the present invention; Figure 3 This is a schematic diagram of the installation structure of the insulating layer in this invention; Figure 4 This is a schematic diagram of the installation structure of the heat-conducting outer ring of the present invention; Figure 5 This is a schematic diagram of the structure of the auxiliary de-icing component of the present invention; Figure 6 This is a schematic diagram of the installation structure of the plug-in rod of the present invention; Figure 7 This is a schematic diagram of the installation structure of the damping block of the present invention; Diagram label: 1. Inner conductor; 2. Protective de-icing assembly; 201. External heating box; 202. Vent pipe; 203. Silicone rubber ring; 204. Middle insulation layer; 205. Spiral heat-conducting layer; 206. Vent hole; 207. Heating wire; 208. Outer insulation layer; 209. Deformation groove; 210. Protective film; 211. Inner heat-conducting ring; 212. Outer heat-conducting ring; 213. Vent hole; 214. Insulating film; 215. Filler layer; 216. Reinforcing rod; 3. Auxiliary de-icing components; 301. Left retaining ring; 302. Right retaining ring; 303. Support bracket; 304. Ice crushing box; 305. Compression spring; 306. Ice crushing wheel; 307. Ice melting tank; 308. Connecting plate; 309. Insertion hole; 310. Insertion rod; 311. Connecting nut; 312. Balance frame; 313. Connecting frame; 314. Guide hole; 315. Guide rod; 316. Damping block; 317. Buffer spring; 318. Compression trolley. Detailed Implementation

[0020] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0021] Example: Figures 1-7 As shown, the present invention provides a high-voltage power de-icing overhead line technical solution, including an inner conductor 1, and a protective de-icing assembly 2 installed on the outside of the inner conductor 1. The protective de-icing assembly 2 includes an outer heat box 201, an vent pipe 202, a silicone rubber ring 203, a middle insulation layer 204, a spiral heat-conducting layer 205, a vent hole 206, a heating wire 207, an outer insulation layer 208, a deformation groove 209, a protective film 210, a heat-conducting inner ring 211, a heat-conducting outer ring 212, a vent hole 213, an insulating film 214, a filling layer 215, and a reinforcing rod 216. An outer heat box 201 is uniformly sleeved on the outside of the inner conductor 1. A filling layer 215 is uniformly filled on the outside of the inner conductor 1 between the outer heat boxes 201. A reinforcing rod 216 is provided inside the filling layer 215 to improve the internal strength of the cable and make it more resistant to pressure and bending. An air outlet pipe 202 is uniformly installed through the outside of the outer heat box 201. A silicone rubber ring 203 is bonded inside the outer heat box 201. Several external heating boxes 201 are covered with a middle insulating layer 204. Each middle insulating layer 204 has a vent hole 213 corresponding to the vent pipe 202. An insulating film 214 is glued to one end of the vent pipe 202 to allow air to pass through the vent hole 213. The outer insulating layer 208 is compressed, and a spiral heat-conducting layer 205 is wrapped around the outside of the middle insulating layer 204. Vent holes 206 are evenly distributed on the outer side of the spiral heat-conducting layer 205. Heating wires 207 are wound around the gaps in the spiral heat-conducting layer 205. The outer insulating layer 208 is then covered around the spiral heat-conducting layer 205. Vent holes 206 are evenly distributed on the outer side of the outer insulating layer 208. The cable has a deformation groove 209, and a protective film 210 is wrapped around the outer side of the outer insulation layer 208. The end face of the outer heat box 201 is circular. A heat-conducting inner ring 211 is embedded inside the outer heat box 201. The inner side of the heat-conducting inner ring 211 is attached to the outer side of the inner conductor 1. A heat-conducting outer ring 212 is embedded inside the outer heat box 201. The outer side of the heat-conducting outer ring 212 is attached to the middle insulation layer 204 to improve the heat transfer effect. The outer edge of the filling layer 215 is aligned with the outer edge of the heat-conducting outer ring 212. The end of the vent pipe 202 and the outer side of the outer insulation layer 208 are in the same curved surface to ensure that the inside of the cable is tight and reduce internal gaps.

[0022] An auxiliary de-icing assembly 3 is installed on the outside of the protective film 210. The auxiliary de-icing assembly 3 includes a left retaining ring 301, a right retaining ring 302, a support protrusion 303, an ice crushing box 304, a compression spring 305, an ice crushing wheel 306, an ice melting tank 307, a docking plate 308, a plug-in hole 309, a plug-in rod 310, a connecting nut 311, a balance frame 312, a connecting frame 313, a guide hole 314, a guide rod 315, a damping block 316, a buffer spring 317, and a compression trolley 318. A left retaining ring 301 is snapped onto one side of the protective film 210. A right retaining ring 302 is hinged to the top of the left retaining ring 301. Supporting brackets 303 are welded to the top and one side of both the left and right retaining rings 301 and 302. An ice crushing box 304 is slidably snapped into the inside of the supporting bracket 303. One end of the ice crushing box 304 is connected to the inside of the supporting bracket 303 by a compression spring 305. An ice crushing wheel 306 is symmetrically rotated and installed inside the ice crushing box 304. An ice melting groove 307 is opened in the middle of the ice crushing wheel 306. Both the left retaining ring 301 and the right retaining ring 302 have a butt plate 308 welded to their bottom ends. A insertion hole 309 is formed in the middle of the butt plate 308, and an insertion rod 310 is fitted inside the insertion hole 309. The left retaining ring 301 and the right retaining ring 302 are identical in shape and size. The insertion rod 310 is composed of a hexagonal prism and a screw. The insertion hole 309 is a regular hexagon. The outer side of the hexagonal end of the insertion rod 310 fits against the inner side of the insertion hole 309, facilitating the connection of the insertion rod 310 to the insertion hole 309. One end of the insertion rod 310 is threaded to a connecting nut 311. A balance frame 312 is welded to the end of the insertion rod 310 away from the connecting nut 311. Both ends of the balance frame 312 are welded to connecting... The frame 313 has a guide hole 314 on its top surface. A guide rod 315 is slidably installed inside the guide hole 314. A damping block 316 is fixedly installed at the top of the guide rod 315. Limiting plates are glued to both sides of the damping block 316. The inner side of the limiting plate is attached to the outer side of the top of the connecting frame 313, so that the damping block 316 and the guide hole 314 can always be kept parallel. The opposing surfaces of the damping block 316 and the connecting frame 313 are connected by a buffer spring 317. A squeezing trolley 318 is connected to one side of the damping block 316. A contact wheel is installed on the side of the squeezing trolley 318 near the protective film 210, and the contact wheel is attached to the protective film 210 to facilitate the removal of ice layer on the outside of the cable.

[0023] The working principle and usage process of this invention: The outer heating box 201 is sequentially sleeved on the outside of the inner conductor 1. A reinforcing rod 216 is placed in front of the outer heating box 201. The filling layer 215 is added through an extruder. The middle insulation layer 204 is wrapped on the outside of the outer heating box 201 and the filling layer 215 through an extruder. At this time, it is important to ensure that the materials of the filling layer 215 and the middle insulation layer 204 do not block the air outlet pipe 202. Then, a spiral heat-conducting layer 205 and a spiral heating wire 207 are wrapped on the outside of the middle insulation layer 204. Then, an outer insulation layer 208 is wrapped on the outside of the spiral heat-conducting layer 205 through an extruder. A protective film 210 made of polytetrafluoroethylene is wrapped on the outside of the outer insulation layer 208 to complete the production of the cable. After the cable is laid, if ice forms on the outside of the cable, the power supply to the heating wire 207 is turned on. The heating wire 207 starts to heat up and melt the ice layer near the protective film 210. Since the inner conductor 1 also heats up during normal use, the heat from both is transferred to the outer heat box 201 through the inner heat-conducting ring 211 and the outer heat-conducting ring 212. The air in the silicone rubber ring 203 and the outer heat box 201 will expand due to the heat. Since the thermal expansion rate of the silicone rubber ring 203 is higher than that of air, the air in the outer heat box 201 will be discharged from the air outlet 202 to the space between the middle insulation layer 204 and the outer insulation layer 208 due to the increase in internal air pressure. Since the deformation groove 209 is thinner, the increased internal air pressure will push the deformation groove 209 to bulge outward. Under the dual action of heating and melting and inner squeezing, the ice layer on the outside of the cable is more likely to break and detach from the outside of the overhead line, accelerating de-icing and improving de-icing efficiency. This method requires less heat and consumes less energy. If the ice layer outside the overhead line is too thick, it is difficult to remove the ice by the protective de-icing component 2 alone, and the de-icing effect is poor. A left retaining ring 301 and a right retaining ring 302 can be sleeved on the outside of the overhead line and sleeved on the outside of the cable. The ring structure formed by the left retaining ring 301 and the right retaining ring 302 is perpendicular to the cable axis. The ice crushing box 304 is pushed by the compression spring 305, the ice crushing wheel 306 contacts the ice layer, the two docking plates 308 are in contact with each other, the plug rod 310 passes through the plug hole 309, the connecting nut 311 rotates and fixes the balance frame 312, the guide rod 315 passes through the guide hole 314 on both sides of the balance frame 312, and the compression trolley 318 is installed. The bottom ends of the left retaining ring 301 and the right retaining ring 302 are connected to insulated traction ropes, which pull the auxiliary de-icing assembly 3 to move along the overhead line. During the movement, the rollers of the squeezing trolley 318 always contact the outside of the overhead line and move up and down according to the different thicknesses of the outer side of the cable. The buffer spring 317 deforms in coordination. During the movement, the ice melting groove 307 of the ice crushing wheel 306 squeezes the outside of the ice layer, accelerating the breaking of the outer ice layer. When it moves to the deformation groove 209, the squeezing spring 305 will cause the ice crushing wheel 306 to impact the outside of the ice layer, accelerating the breaking of the ice layer and making the de-icing effect better. Different de-icing structures are selected according to the thickness of the ice layer to further improve the de-icing effect and efficiency.

[0024] Furthermore, during the ice melting process, the deformation of the deformation groove 209 of the outer insulation layer 208 when it encounters the ice crushing wheel 306 accelerates the cracking of the ice layer at that location under the dual action of the inside and outside. The two components can work independently, and when they work together, they will have a better ice melting and de-icing effect.

[0025] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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-voltage ice-melting overhead line comprising an inner conductor (1), characterized in that: The inner wire (1) is externally provided with a protection ice melting assembly (2), which comprises an outer heating box (201); The inner wire (1) is externally provided with an outer heating box (201), which is externally provided with an air outlet pipe (202), and the inner part of the outer heating box (201) is bonded with a silica rubber ring (203); The outer part of the outer heating box (201) is externally coated with a middle insulation layer (204), the outer part of the middle insulation layer (204) is wrapped with a spiral heat conduction layer (205), the outer part of the spiral heat conduction layer (205) is externally provided with a ventilation hole (206), the gap of the spiral heat conduction layer (205) is wound with a heating wire (207), the outer part of the spiral heat conduction layer (205) is coated with an outer insulation layer (208), the outer part of the outer insulation layer (208) is externally provided with a deformation slot (209), and the outer part of the outer insulation layer (208) is coated with a protective film (210).

2. The ice-melting overhead line of high-voltage electric power according to claim 1, characterized in that, The end face of the outer heating box (201) is a circular ring, the inner part of the outer heating box (201) is inlaid with a heat conduction inner ring (211), the inner part of the heat conduction inner ring (211) is attached to the outer part of the inner wire (1), the inner part of the outer heating box (201) is inlaid with a heat conduction outer ring (212), and the outer part of the heat conduction outer ring (212) is attached to the middle insulation layer (204).

3. The ice-melting overhead line of high-voltage electric power according to claim 1, characterized in that, The middle insulation layer (204) is externally provided with a ventilation clamping hole (213) corresponding to the air outlet pipe (202), and the inner part of the air outlet pipe (202) is bonded with an isolation rubber sheet (214).

4. The ice-melting overhead line of high-voltage electric power according to claim 2, characterized in that, The outer part of the inner wire (1) is externally filled with a filling layer (215) between the outer heating boxes (201), and the inner part of the filling layer (215) is provided with a reinforcing rod (216).

5. The de-icing overhead line of high-voltage electric power according to claim 4, characterized in that, The outer part of the filling layer (215) is aligned with the outer part of the heat conduction outer ring (212), and the end part of the air outlet pipe (202) and the outer part of the outer insulation layer (208) are in the same curved surface.

6. The ice-melting overhead line of high-voltage electric power according to claim 1, characterized in that, The outer part of the protective film (210) is externally provided with an auxiliary ice melting assembly (3), and the auxiliary ice melting assembly (3) comprises a left clamping ring (301); The outer part of the protective film (210) is externally provided with an auxiliary ice melting assembly (3), and the auxiliary ice melting assembly (3) comprises a left clamping ring (301); The top end of the left clamping ring (301) is hingedly connected with a right clamping ring (302), the top end and one side of the left clamping ring (301) and the right clamping ring (302) are welded with a supporting protruding frame (303), the inner part of the supporting protruding frame (303) is slidably clamped with a broken ice box (304), the inner part of the broken ice box (304) is connected between one end of the supporting protruding frame (303) and one end through a compression spring (305), the inner part of the broken ice box (304) is symmetrically rotatably installed with a broken ice wheel (306), and the middle part of the broken ice wheel (306) is provided with a melting ice groove (307); The bottom end of the left clamping ring (301) and the right clamping ring (302) is welded with a butt joint plate (308), the middle part of the butt joint plate (308) is provided with a plug-in hole (309), the inner part of the plug-in hole (309) is clamped and installed with a plug-in rod (310), and one end of the plug-in rod (310) is threadedly connected with a connecting nut (311).

7. The ice-melting overhead line of high-voltage electric power according to claim 6, characterized in that, The left clamping ring (301) and the right clamping ring (302) are the same in shape and size, the insertion rod (310) is combined by a hexagonal prism and a screw rod, the insertion hole (309) is a regular hexagon, and the outer side of the hexagonal prism end of the insertion rod (310) is attached to the inner side of the insertion hole (309).

8. The ice-melting overhead line of high-voltage electric power according to claim 6, characterized in that, The insertion rod (310) is welded with a balance frame (312) away from one end of the connecting nut (311), both ends of the balance frame (312) are welded with connecting frames (313), the top surface of the connecting frame (313) is provided with a guide hole (314), the guide hole (314) is internally and slidably provided with a guide rod (315), the top end of the guide rod (315) is fixedly provided with a damping block (316), the opposite surfaces between the damping block (316) and the connecting frame (313) are connected through a buffer spring (317), and one side of the damping block (316) is connected with an extrusion trolley (318).

9. The ice-melting overhead line of high-voltage electric power according to claim 8, characterized in that, The damping block (316) is attached with limiting plates on both sides, and the inner side of the limiting plate is attached to the outer side of the top end of the connecting frame (313).

10. The ice-melting overhead line of high-voltage electric power according to claim 8, characterized in that, The extrusion trolley (318) is installed with a contact wheel close to one side of the protective film (210), and the contact wheel is attached to the protective film (210).

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