CN112002482B

CN112002482B - Overhead insulated cable

Info

Publication number: CN112002482B
Application number: CN202010907164.8A
Authority: CN
Inventors: 陈利
Original assignee: Jintai Cable Co ltd
Current assignee: JINTAI CABLE Co.,Ltd.
Priority date: 2020-09-02
Filing date: 2020-09-02
Publication date: 2021-10-19
Anticipated expiration: 2040-09-02
Also published as: CN112002482A

Abstract

The invention discloses an overhead insulated cable, which comprises a first cable and a second cable, wherein the first cable and the second cable are connected through a sleeve, a plurality of embedded pipes and a built-in triangular pipe are arranged in the first cable and the second cable, the embedded pipes in the first cable and the embedded pipes in the second cable are communicated with each other through a communicating pipe, a plurality of cable bodies penetrate through the two built-in triangular pipes, a device column is arranged on the side wall of the sleeve and fixedly connected with the side wall of the sleeve through a fixing device, a movable cavity penetrates through the device column, a warning mechanism is arranged in the movable cavity in a sliding mode, and the surface layer of the built-in triangular pipe is composed of an anti-collision glue layer, a moisture absorption layer, a buffer layer and a heat transfer layer. The cable fault warning device is reasonable in structural design and has the advantages of warning patrolmen and finding cable faults in time.

Description

Overhead insulated cable

Technical Field

The invention relates to the technical field of cables, in particular to an overhead insulated cable.

Background

The overhead cable is an overhead conductor with an insulating layer and a protective sheath, is a special cable manufactured by a production process similar to a crosslinked cable, and is a new power transmission mode between the overhead conductor and an underground cable.

When the overhead cable in the prior art is used, if the overhead cable is in a fault condition, the local area of the cable leaks electricity, a large amount of heat can be accumulated at a damaged part, if the cable is not processed in time, the cable can be damaged, the electricity leakage condition of the local area is generally very difficult to see, inspection personnel can ignore the electricity leakage condition, and the overhead insulated cable is provided for warning the inspection personnel.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides an overhead insulated cable.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an overhead insulated cable, includes first cable and second cable, be connected through the sleeve pipe between first cable and the second cable, all be provided with a plurality of embedded pipes and a built-in triangular tube in first cable and the second cable, be located a plurality of in first cable be linked together each other through communicating pipe between embedded pipe and the a plurality of embedded pipes that are located the second cable, two all run through in the built-in triangular tube and be provided with many cable bodies, sheathed tube lateral wall department is provided with the device post, the device post passes through fixing device and sheathed tube lateral wall fixed connection, it is provided with movable chamber to run through in the device post, the slip is provided with warning mechanism in the movable chamber, the top layer of built-in triangular tube comprises crashproof colloid layer, moisture absorption layer, buffer layer and heat transfer layer.

Preferably, fixing device includes two fixed lantern rings of fixed connection on the device post lateral wall, two through dead lever fixed connection between the fixed lantern ring, two bracing pieces of fixedly connected with on the lateral wall of the fixed lantern ring that is located the below, two the equal fixed connection of lower extreme of bracing piece is on sheathed tube lateral wall, two the bracing piece all with the sleeve pipe on keep the sixty degree angle between the lateral wall of corresponding position department.

Preferably, the warning mechanism comprises a moving piston arranged in the moving cavity in a sliding manner, the lower end of the device column is fixedly communicated with a gas pipe, the lower end of the gas pipe is fixedly communicated with the side wall of the communicating pipe, the upper end of the moving piston is fixedly connected with a connecting rod, the upper end of the connecting rod is fixedly connected with a movable plate, the side wall of the movable plate is fixedly connected with a connecting column, a sliding groove is arranged on the outer side wall of the device column in a penetrating manner, the connecting column slides in the sliding groove, the end of the connecting column, which is positioned outside the sliding groove, is fixedly connected with a warning flashing lamp, two conductive columns are fixedly connected on the side wall of the movable plate, the two conductive columns are connected with the warning flashing lamp through electric wires, the inner wall of the moving cavity is fixedly connected with a power-on socket, and conductive grooves corresponding to the positions of the two conductive columns are arranged in the power-on socket, the solar photovoltaic power generation device is characterized in that a storage battery is arranged in the power-on socket, a solar panel is fixedly connected to the upper end of the device column, and the solar panel is electrically connected with the storage battery.

Preferably, the anti-collision colloid layer is composed of crosslinked polyethylene, the moisture absorption layer is composed of water absorption resin, the buffer layer is composed of natural rubber, and the heat transfer layer is composed of graphene separation net.

Preferably, the maximum movement position of the moving piston does not reach the lowest point of the chute.

Preferably, a plurality of the inner embedded pipes are filled with a low boiling point solution, and the low boiling point solution is a tetrahydrofuran solvent.

Preferably, each end point of the built-in triangular pipe abuts against the inner wall of the first cable or the second cable at the corresponding position, and the built-in triangular pipes are respectively located at the gaps between the built-in triangular pipe and the inner wall of the cable at the corresponding positions.

Preferably, the device column is vertically up on the casing.

The invention has the following beneficial effects;

1. through the mutual matching of the fixing device and the warning mechanism, when the local electric leakage of the cable generates high temperature, the low boiling point solution in each embedded pipe can be quickly evaporated, the pressure intensity in each embedded pipe is increased, the low boiling point solution can be input into the device column through the gas transmission pipe in the section area, the moving piston is pushed upwards to drive the two conductive columns to enter the corresponding conductive grooves to supply power to the warning flashing lamp, so that the warning flashing lamp in the section area flashes, and patrolmen are reminded of taking trouble;

2. when the low-boiling-point solution in each embedded pipe is boiled, the heat is absorbed, and when the local cable leaks electricity to generate high temperature, part of heat can be absorbed to a certain extent, so that heat accumulation is reduced;

3. the cable is protected to inside each embedded pipe and the built-in triangular pipe that sets up of cable can play, improves the benefit of radiating effect, and when the cable received external force striking, can prevent that the cable body from directly receiving the impact through each apex angle buffering in the built-in triangular pipe.

Drawings

Fig. 1 is a schematic structural diagram of an overhead insulated cable according to the present invention;

fig. 2 is a schematic view of an outer side wall of a column portion of an overhead insulated cable according to the present invention;

fig. 3 is a cable transverse cross-sectional view of an overhead insulated cable according to the present invention;

fig. 4 is an enlarged view of a structure shown in fig. 3.

In the figure: 1 first cable, 2 embedded pipes, 3 sleeve pipes, 4 bracing pieces, 5 dead levers, 6 fixed lantern rings, 7 solar panel, 8 circular telegram sockets, 9 lead electrical pillar, 10 movable plates, 11 spliced poles, 12 connecting rods, 13 motion pistons, 14 gas-supply pipes, 15 communicating pipes, 16 second cables, 17 device posts, 18 spouts, 19 warning flashing lights, 20 built-in triangular tubes, 21 cable bodies, 22 crashproof colloidal layer, 23 hygroscopic layer, 24 buffer layers, 25 heat transfer layers.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-4, an overhead insulated cable comprises a first cable 1 and a second cable 16, the first cable 1 is connected with the second cable 16 through a sleeve 3, a plurality of embedded pipes 2 and a built-in triangular pipe 20 are arranged in the first cable 1 and the second cable 16, the embedded pipes 2 in the first cable 1 are communicated with the embedded pipes 2 in the second cable 16 through a communicating pipe 15, a plurality of cable bodies 21 are arranged in the two built-in triangular pipes 20 in a penetrating manner, a device column 17 is arranged on the side wall of the sleeve 3, the device column 17 is vertically upward on the sleeve 3, the device column 17 is fixedly connected with the side wall of the sleeve 3 through a fixing device, the fixing device comprises two fixing sleeve rings 6 fixedly connected on the side wall of the device column 17, the two fixing sleeve rings 6 are fixedly connected through a fixing rod 5, two support rods 4 are fixedly connected on the side wall of the fixing sleeve ring 6 below, the equal fixed connection of lower extreme of two bracing pieces 4 is on sleeve pipe 3's lateral wall, and two bracing pieces 4 all keep sixty degrees angles with sleeve pipe 3 on between the lateral wall of corresponding position department, guarantee fixed fastness, can not drop easily.

Wherein, a movable cavity is arranged in the device column 17 in a penetrating way, a warning mechanism is arranged in the movable cavity in a sliding way, the warning mechanism comprises a moving piston 13 arranged in the movable cavity in a sliding way, the lower end of the device column 17 is fixedly communicated with a gas pipe 14, the lower end of the gas pipe 14 is fixedly communicated with the side wall of a communicating pipe 15, the gas pipe 14 is used for communicating the communicating pipe 15 with the movable cavity, the upper end of the moving piston 13 is fixedly connected with a connecting rod 12, the upper end of the connecting rod 12 is fixedly connected with a movable plate 10, the side wall of the movable plate 10 is fixedly connected with a connecting column 11, the outer side wall of the device column 17 is provided with a sliding groove 18 in a penetrating way, the connecting column 11 slides in the sliding groove 18, one end of the connecting column 11, which is positioned outside the sliding groove 18, is fixedly connected with a warning flashing lamp 19, the side wall of the movable plate 10 is fixedly connected with two conductive columns 9, and the two conductive columns 9 are connected with the warning flashing lamp 19 through wires, the inner wall department fixedly connected with circular telegram socket 8 in activity chamber is provided with in the circular telegram socket 8 and leads the corresponding electrically conductive groove in electrical pillar 9 position with two, is provided with the battery in the circular telegram socket 8, installs the upper end fixedly connected with solar panel 7 of post 17, and solar panel 7 is connected with the battery electricity, and solar panel 7 can be with the electric energy of absorptive solar energy conversion battery, can charge for the battery.

The surface layer of the built-in triangular pipe 20 is composed of an anti-collision colloid layer 22, a moisture absorption layer 23, a buffer layer 24 and a heat transfer layer 25, the anti-collision colloid layer 22 is composed of crosslinked polyethylene, the moisture absorption layer 23 is composed of water absorbent resin, the buffer layer 24 is composed of natural rubber, the heat transfer layer 25 is composed of a graphene separation net, the built-in triangular pipe 20 is a main body for protecting the cable body 21, and the effects of heat transfer, buffering, moisture absorption and collision prevention can be achieved by arranging different interlayers.

Specifically, the maximum movement position of the moving piston 13 does not reach the lowest point of the sliding groove 18, and the air leakage phenomenon does not occur, and the plurality of embedded pipes 2 are filled with a low-boiling-point solution, which is a tetrahydrofuran solvent and boils when the temperature reaches 66 ℃.

Each end point of the built-in triangular tube 20 is abutted against the inner wall of the first cable 1 or the second cable 16 at the corresponding position, the built-in triangular tubes 2 are respectively located at the gap between the built-in triangular tube 20 at the corresponding position and the inner wall of the cable, and the built-in triangular tube 20 is located at the center of the first cable 1 or the second cable 16, so that the safety is improved.

In the invention, when a certain part of the first cable 1 and the second cable 16 has a fault and electric leakage, a high accumulative temperature is generated in the region, which can cause the tetrahydrofuran low-boiling-point liquid in the embedded tube 2 at the corresponding position to slowly boil, generate a large amount of gas, cause the pressure in the embedded tube 2 to increase, move into a movable cavity in the device column 17 through the gas pipe 14, push the moving piston 13 to move upwards, drive the moving plate 10 to move upwards through the connecting rod 12, finally enable the two conductive columns 9 to be completely inserted into the conductive grooves on the electrified socket 8 to form a channel, supply power to the warning flashing lamp 19, enable the warning flashing lamp 19 to flash, remind inspectors of paying attention, the circuit has a fault, and when the temperature drops after the problem is processed, the moving piston 13 returns to the original position, and the warning flashing lamp 19 does not flash.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. An overhead insulated cable comprises a first cable (1) and a second cable (16), and is characterized in that the first cable (1) and the second cable (16) are connected through a sleeve (3), a plurality of embedded pipes (2) and a built-in triangular pipe (20) are arranged in the first cable (1) and the second cable (16), the embedded pipes (2) in the first cable (1) and the embedded pipes (2) in the second cable (16) are communicated with each other through a communication pipe (15), a plurality of cable bodies (21) are arranged in the two built-in triangular pipes (20) in a penetrating manner, a device column (17) is arranged at the side wall of the sleeve (3), the device column (17) is fixedly connected with the side wall of the sleeve (3) through a fixing device, and a movable cavity is arranged in the device column (17) in a penetrating manner, a warning mechanism is arranged in the movable cavity in a sliding mode, and the surface layer of the built-in triangular tube (20) consists of an anti-collision colloid layer (22), a moisture absorption layer (23), a buffer layer (24) and a heat transfer layer (25);

the warning mechanism comprises a moving piston (13) which is arranged in a movable cavity in a sliding mode, the lower end of the device column (17) is fixedly communicated with a gas pipe (14), the lower end of the gas pipe (14) is fixedly communicated with the side wall of a communicating pipe (15), the upper end of the moving piston (13) is fixedly connected with a connecting rod (12), the upper end of the connecting rod (12) is fixedly connected with a movable plate (10), the side wall of the movable plate (10) is fixedly connected with a connecting column (11), the outer side wall of the device column (17) is provided with a sliding groove (18) in a penetrating mode, the connecting column (11) slides in the sliding groove (18), the connecting column (11) is located at one end outside the sliding groove (18) and is fixedly connected with a warning flashing lamp (19), the side wall of the movable plate (10) is fixedly connected with two conductive columns (9), and the conductive columns (9) and the warning flashing lamp (19) are connected through electric wires, the solar charging device is characterized in that a power-on socket (8) is fixedly connected to the inner wall of the movable cavity, conductive grooves corresponding to the positions of the two conductive columns (9) are formed in the power-on socket (8), a storage battery is arranged in the power-on socket (8), a solar panel (7) is fixedly connected to the upper end of the device column (17), and the solar panel (7) is electrically connected with the storage battery.

2. An overhead insulated cable according to claim 1, characterized in that the fixing device comprises two fixing rings (6) fixedly connected to the side wall of the device post (17), the two fixing rings (6) are fixedly connected with each other through a fixing rod (5), the side wall of the fixing ring (6) located below is fixedly connected with two support rods (4), the lower ends of the two support rods (4) are fixedly connected to the side wall of the sleeve (3), and the two support rods (4) are arranged at sixty-degree angles with the side wall of the sleeve (3) at the corresponding positions.

3. An overhead insulated cable according to claim 1, wherein the anti-collision colloid layer (22) is composed of crosslinked polyethylene, the moisture absorption layer (23) is composed of water absorbent resin, the buffer layer (24) is composed of natural rubber, and the heat transfer layer (25) is composed of graphene spacer mesh.

4. An overhead insulated cable according to claim 3, characterized in that the maximum movement position of the moving piston (13) does not reach the lowest point of the chute (18).

5. An overhead insulated cable according to claim 1, wherein a plurality of the embedded tubes (2) are filled with a low boiling point solution, and the low boiling point solution is a tetrahydrofuran solvent.

6. An overhead insulated cable according to claim 1, wherein each end of the triangular inner pipe (20) abuts against the inner wall of the first cable (1) or the second cable (16) at the corresponding position, and the plurality of the triangular inner pipes (2) are respectively located at the gap between the triangular inner pipe (20) and the inner wall of the cable at the corresponding position.

7. An overhead insulated cable according to claim 1, characterized in that the device post (17) is vertically upward on the sleeve (3).