High-temperature-resistant insulating power cable conduit

Abstract

The utility model relates to the field of power cable conduits, in particular to a high-temperature-resistant insulating power cable conduit, which comprises an inner fitting pipe body, a main body used for fitting a power cable, an inner spiral groove, an insulating layer arranged inside the inner fitting pipe body and used for assisting heat dissipation, and an outer spiral groove arranged inside the inner fitting pipe body and wrapping the insulating layer outside the inner fitting pipe body. The external surface of the insulating layer is covered with an insulating coating. The power cable conduit is provided with the inner fitting pipe body, the insulating layer, the insulating coating, the middle heat conduction layer, the boron nitride particles, the silicon rubber particles and the outer protection pipe, when the power cable conduit is used, the power cable conduit is divided into four layers through the inner fitting pipe body, the insulating layer, the middle heat conduction layer and the outer protection pipe, and the inner fitting pipe body is fitted with a power cable; and the internal spiral groove arranged inside can also form a heat dissipation channel, and then the insulating layer and the insulating coating are attached to the outside of the inside pipe body, so that the good insulating capability of the power cable conduit is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of power cable conduit, concretely relates to a high temperature resistant insulated power cable conduit. BACKGROUND

[0002] The power cable conduit is also called cable protection pipe and power pipe, and is a special pipe for wrapping and supporting power cable, and mainly bears several functions, physical protection: preventing the cable from being mechanically damaged, such as extrusion, impact, chemical corrosion, such as soil acid and alkali corrosion, and environmental factors, such as ultraviolet rays and moisture; path planning: providing a standardized laying channel for the cable, facilitating subsequent maintenance and replacement; safety isolation: isolating electromagnetic interference in complex environments, such as the intersection area of power lines and communication lines, to avoid short circuit risk.

[0003] Through the search, the power cable protection pipe of a pressure-resistant type with the announcement number CN211018208U is specifically disclosed, and the power cable protection pipe of a pressure-resistant type includes: an outer protection pipe and a core pipe located in the outer protection pipe, further includes a plurality of Z-shaped buffer connecting assemblies, the Z-shaped buffer connecting assemblies are arranged in an annular array and are connected with the inner wall of the outer protection pipe at the outer end, and are connected with the outer wall of the core pipe at the inner end, the Z-shaped buffer connecting assembly includes an outer strip-shaped arc plate, an inner strip-shaped arc plate and a strip-shaped connecting plate, the strip-shaped connecting plate is inclinedly arranged and connected with the outer strip-shaped arc plate at the outer side and with the inner strip-shaped arc plate at the inner side, and the Z-shaped buffer connecting assemblies are filled with elastic particles between adjacent Z-shaped buffer connecting assemblies, in the manner, the power cable protection pipe of a pressure-resistant type has the advantages that the Z-shaped buffer connecting assembly can produce recoverable deformation, the buffer and protection effects of the power cable protection pipe are enhanced, and the service life of the cable is prolonged.

[0004] The existing power cable conduit lacks the ability of high-temperature insulation when used with power cables, which can cause insufficient heat resistance of the cable pipe, easy overheating and accelerated aging, and shortens the service life, and the single-layer insulation is difficult to cope with complex environments, the risk of electric leakage and short circuit rises, and the power cable conduit in the above comparative case also lacks the ability of high-temperature insulation, which can cause internal power cable damage due to low external mechanical strength during long-term use, and increase the maintenance cost.

[0005] Therefore, it is necessary to invent a high-temperature resistant insulated power cable conduit to solve the above problems. UTILITY MODEL CONTENTS

[0006] The utility model discloses a kind of high-temperature-resistant insulation power cable conduits, by inner adhering pipe body, insulating layer, insulating coating, intermediate heat conduction layer, boron nitride particle, silicone rubber particle and outer protective pipe realize let the power cable conduit have the ability of high-temperature-resistant insulation, such high-temperature-resistant insulation design is significantly improved by multilayer synergistic effect Performance, adhering pipe body disperses cable stress, inner spiral groove enhances heat dissipation, insulating layer and insulating coating provide double electric protection barrier, intermediate heat conduction layer efficiently conducts heat, avoid cable overheating, outer protective pipe enhances corrosion resistance and mechanical strength, resist external force damage, overall design prolongs cable life, improve system safety and stability, let the power cable conduit be applicable to high-temperature, high-load environment effect, to solve the power cable conduit in prior art in use process, since power cable conduit is used when matching power cable, lack the ability of high-temperature-resistant insulation, can lead to cable pipe insufficient heat resistance, easy to overheat and accelerate aging, shorten service life, moreover single-layer insulation is difficult to deal with complex environment, and the risk of electric leakage and short circuit rises, and the power cable conduit in the above comparative case also lacks the ability of high-temperature-resistant insulation, so long-term use will also cause internal power cable to be damaged due to low external mechanical strength, increase maintenance cost problem.

[0007] In order to achieve the above object, the utility model provides the following technical scheme: a kind of high-temperature-resistant insulation power cable conduit, including inner adhering pipe body, for adhering the main body of power cable;

[0008] Inner spiral groove is set in the inside of inner adhering pipe body, for auxiliary heat dissipation, and the outside of inner adhering pipe body is wrapped with insulating layer, the outside surface of the insulating layer is covered with insulating coating, the outside of the insulating layer is wrapped with intermediate heat conduction layer;

[0009] Boron nitride particle is fixedly arranged on the outside of intermediate heat conduction layer, to improve the high-temperature-resistant performance of power cable conduit, and silicon rubber particle is fixedly installed in the inside of intermediate heat conduction layer, the outside of the intermediate heat conduction layer is wrapped with outer protective pipe, the outside surface of the outer protective pipe is covered with outer strength coating, and butt joint pipe ring is fixedly installed at the front and back ends of the outer protective pipe.

[0010] Preferably, the insulating layer and the insulating coating are tightly adhered, and the material of the insulating coating is polyimide.

[0011] Preferably, the number of boron nitride particles is set to multiple, and the multiple boron nitride particles are arranged in a ring array on the intermediate heat conduction layer.

[0012] Preferably, the outer strength coating and the outer protective pipe are tightly adhered, and the material of the outer strength coating is aluminum oxide ceramic.

[0013] Preferably, the outer sleeve of the adapter pipe ring is provided with an upper adapter pipe clamp, and the outer thread of the upper adapter pipe clamp is penetrated by a stud bolt.

[0014] Preferably, the lower end of the stud bolt is threadedly connected with a lower adapter pipe clamp, and the inner movable sleeve of the lower adapter pipe clamp is sleeved with a cable extension pipe.

[0015] In the above technical solution, the technical effects and advantages of the utility model are provided:

[0016] 1. The utility model discloses an inner adhering pipe body, an insulation layer, an insulation coating, an intermediate heat conducting layer, boron nitride particles, silicon rubber particles and an outer protective pipe are arranged, when the power cable conduit is used, the power cable conduit is divided into four layers through the inner adhering pipe body, the insulation layer, the intermediate heat conducting layer and the outer protective pipe, the inner adhering pipe body is adhered with the power cable, and local stress is dispersed, the inner spiral groove arranged in the inner adhering pipe body can also form a heat dissipation channel, then the insulation layer and the insulation coating are outside the inner adhering pipe body, the power cable conduit is improved with good insulation capacity, then the intermediate heat conducting layer, boron nitride particles and silicon rubber particles utilize the high thermal conductivity of boron nitride and silicon rubber to quickly conduct heat, so that the power cable conduit has good heat resistance, boron nitride and silicon rubber also provide certain flexibility and adhesion, finally, the outer protective pipe and the outer strength coating are matched to make the power cable conduit have excellent corrosion resistance and mechanical strength, and physical damage under high temperature environment can be resisted, so that the power cable conduit has the ability of high temperature insulation, the high temperature insulation design improves performance through the synergistic effect of multiple layers, the adhering pipe body disperses cable stress, the inner spiral groove enhances heat dissipation, the insulation layer and the insulation coating provide a double electric protection barrier, the intermediate heat conducting layer efficiently conducts heat, cable overheating is avoided, the outer protective pipe enhances corrosion resistance and mechanical strength, and external force damage is resisted, the overall design prolongs the service life of the cable, improves system safety and stability, and makes the power cable conduit applicable to high temperature and high load environments.

[0017] 2. The utility model discloses an outer protective pipe, an outer strength coating, an adapter pipe ring, an upper adapter pipe clamp, a stud bolt, a lower adapter pipe clamp and a cable extension pipe are arranged, when the power cable conduit is used, since the power cable wrapped for protection is different in length, the upper adapter pipe clamp and the lower adapter pipe clamp can be sleeved on the adapter pipe ring outside the two ends of the outer protective pipe, so that the cable extension pipe and the outer protective pipe are lengthened, modular extension power cable conduits can be adapted to cables of different lengths, the problem that pipes need to be customized due to cable specification differences is solved, and the power cable conduit is applicable to cable length variable scenes in complex terrains. ACCURACY

[0018] In order to make the technical scheme of the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments will be briefly introduced as follows. Obviously, the accompanying drawings in the following description only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0019] Figure 1 It is an overall structure schematic view of the utility model;

[0020] Figure 2 It is an insulation layer structure schematic view of the utility model;

[0021] Figure 3 It is an outer protective tube structure schematic view of the utility model;

[0022] Figure 4 It is a butt joint pipe ring structure schematic view of the utility model;

[0023] Figure 5 It is a lower butt joint pipe hoop structure schematic view of the utility model.

[0024] Mark explanation:

[0025] 1, inner adhering pipe body;2, inner spiral groove;3, insulation layer;4, insulation coating;5, intermediate heat conduction layer;6, boron nitride particle;7, silicone rubber particle;8, outer protective tube;9, outer strength coating;10, butt joint pipe ring;11, upper butt joint pipe hoop;12, stud;13, lower butt joint pipe hoop;14, cable extension tube. Specific implementation

[0026] In order to make those skilled in the art better understand the technical scheme of the utility model, the utility model will be further introduced in detail in conjunction with the drawings.

[0027] The utility model provides a kind of high-temperature-resistant insulation power cable conduit as shown in Figures 1-5 It includes inner adhering pipe body 1, for adhering the main body of power cable;

[0028] Inner spiral groove 2 is opened in the inside of inner adhering pipe body 1, for assisting heat dissipation, and the outside of inner adhering pipe body 1 is wrapped with insulation layer 3, the outside surface of insulation layer 3 is covered with insulation coating 4, and the outside of insulation layer 3 is wrapped with intermediate heat conduction layer 5;

[0029] Nitrogen boride particles 6, evenly fixed on the outside of the intermediate heat conduction layer 5, improve the high temperature resistance of the power cable conduit, and the inside of the intermediate heat conduction layer 5 is fixedly installed with silicone rubber particles 7, the outside of the intermediate heat conduction layer 5 is wrapped with an outer protective tube 8, the outer surface of the outer protective tube 8 is covered with an outer strength coating 9, and the front and rear ends of the outer protective tube 8 are fixedly installed with butt joint tube rings 10. The power cable conduit is divided into four layers through the inner fitting tube body 1, the insulation layer 3, the intermediate heat conduction layer 5 and the outer protective tube 8. The inner fitting tube body 1 is fitted with the power cable to disperse local stress. The inner spiral groove 2 arranged inside can also form a heat dissipation channel. Then the insulation layer 3 and the insulation coating 4 are outside the inner fitting tube body 1, which improves the good insulation capacity of the power cable conduit. Then the intermediate heat conduction layer 5, the nitrogen boride particles 6 and the silicone rubber particles 7 quickly conduct heat by using the high thermal conductivity of boron nitride and silicone rubber.

[0030] As shown in Figure 1 , Figure 2 and Figure 3 , the insulation layer 3 and the insulation coating 4 are tightly fitted, the material of the insulation coating 4 is polyimide, the insulation layer 3 and the insulation coating 4 are outside the inner fitting tube body 1, which improves the good insulation capacity of the power cable conduit, the number of nitrogen boride particles 6 is set to multiple, and multiple nitrogen boride particles 6 are arranged in a ring array on the intermediate heat conduction layer 5. Nitrogen boride particles 6 and silicone rubber particles 7 also make the power cable conduit have good heat resistance, and boron nitride and silicone rubber also provide certain flexibility and adhesion.

[0031] As shown in Figure 1 , Figure 3 , Figure 4 and Figure 5 , the outer strength coating 9 and the outer protective tube 8 are tightly fitted, the material of the outer strength coating 9 is aluminum oxide ceramic, and the outer protective tube 8 and the outer strength coating 9 make the power cable conduit have excellent corrosion resistance and mechanical strength, and can resist physical damage in high temperature environment. The outer surface of the butt joint tube ring 10 is sleeved with an upper butt joint tube hoop 11, and the outer threads of the upper butt joint tube hoop 11 are penetrated by a double-headed bolt 12. Since the length of the power cable wrapped for protection is different, the upper butt joint tube hoop 11 and the lower butt joint tube hoop 13 can be sleeved on the butt joint tube ring 10 outside the two ends of the outer protective tube 8, so that the cable extension pipe 14 and the outer protective tube 8 itself are lengthened. The lower end of the double-headed bolt 12 is threadedly connected with the lower butt joint tube hoop 13, and the cable extension pipe 14 is movably sleeved in the inside of the lower butt joint tube hoop 13. In this way, the upper butt joint tube hoop 11 and the lower butt joint tube hoop 13 modularly extend the power cable conduit, which can adapt to cables of different lengths, solve the problem of customizing the pipeline due to the difference in cable specifications, and make the power cable conduit suitable for cable length variable scenes in complex terrain.

[0032] The utility model discloses a kind of high-temperature-resistant insulation power cable conduits, which comprises power cable conduit, inner fitting pipe body 1, insulating layer 3, intermediate heat-conducting layer 5, outer protective tube 8 and outer strength coating 9, and the power cable conduit is connected with power cable.

[0033] The above only describes some exemplary embodiments of the utility model in a manner of illustration, without doubt, for ordinary skilled person in the art, under the condition of not deviating from the spirit and scope of the utility model, the described embodiment can be modified in various different ways. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the utility model claims.

Claims

1. A high temperature resistant insulated power cable conduit, characterized by: The utility model provides an electric power cable conduit, which comprises an inner fitting pipe body (1) for fitting the main body of the electric power cable; an inner spiral groove (2) is arranged in the inner fitting pipe body (1) to assist heat dissipation, and the outer part of the inner fitting pipe body (1) is wrapped with an insulating layer (3), the outer surface of the insulating layer (3) is covered with an insulating coating (4), the outer part of the insulating layer (3) is wrapped with an intermediate heat conduction layer (5); boron nitride particles (6) are fixedly arranged on the outer part of the intermediate heat conduction layer (5) to improve the high-temperature resistance of the electric power cable conduit, and the inner part of the intermediate heat conduction layer (5) is fixedly installed with silicon rubber particles (7); the outer part of the intermediate heat conduction layer (5) is wrapped with an outer protective pipe (8), the outer surface of the outer protective pipe (8) is covered with an outer strength coating (9), and the front and rear ends of the outer protective pipe (8) are fixedly installed with butt joint pipe rings (10). The insulating layer (3) and the insulating coating (4) are tightly fitted, and the material of the insulating coating (4) is polyimide. The number of the boron nitride particles (6) is multiple, and the multiple boron nitride particles (6) are arranged in a ring array on the intermediate heat conduction layer (5). The outer strength coating (9) and the outer protective pipe (8) are tightly fitted, and the material of the outer strength coating (9) is aluminum oxide ceramic.

2. A high temperature resistant insulated power cable conduit according to claim 1, characterized in that: The outer part of the butt joint pipe ring (10) is sleeved with an upper butt joint pipe hoop (11), and the outer part of the upper butt joint pipe hoop (11) is screwed through with a stud bolt (12).

3. A high temperature resistant insulated power cable conduit according to claim 1, characterized in that: The lower end of the stud bolt (12) is screw-connected with a lower butt joint pipe hoop (13), and the inner part of the lower butt joint pipe hoop (13) movably sleeves an electric cable extension pipe (14).

4. A high temperature resistant insulated power cable conduit according to claim 1, characterized in that: ​ 5. A high temperature resistant insulated power cable conduit according to claim 1, characterized in that: ​ 6. A high temperature resistant insulated electrical power cable conduit according to claim 5, characterized in that: ​

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