Insulation protection device for intermediate joint of high-voltage cable

Abstract

The utility model provides a high-voltage cable intermediate joint insulation protection device, and relates to the technical field of cable protection. The high-voltage cable intermediate joint insulation protection device comprises an upper housing, the lower end of the upper housing is provided with a lower housing, the lower end of the upper housing is connected with a vertical baffle, the upper housing and the lower housing are both of a multi-layer structure and comprise outer shells, insulation layers are arranged in the outer shells, and inner layers are arranged in the insulation layers. According to the insulation protection device for the intermediate joint of the high-voltage cable, the upper housing and the lower housing are arranged in a multi-layer structure, so that the upper housing and the lower housing have physical protection, insulation, waterproof, dustproof and anti-interference effects, the protection effect is comprehensive, the protection performance is good, various threats in a complex environment can be effectively resisted, safe and stable operation of a power system is ensured, and the service life is prolonged. And by arranging the alarm box, when serious electric leakage of the connector occurs, the signal transmitter can transmit the information to a remote data terminal to prompt maintenance personnel to check and process in time.

Description

TECHNICAL FIELD

[0001] The utility model relates to a high -tension cable joint protection device, concretely is a high -tension cable intermediate joint insulation protection device belongs to cable protection technical field. BACKGROUND

[0002] In high -tension cable construction, often need to connect two high -tension cables together, after using insulation tape to be wound together to the joint of two cables, still need to use insulation protection cover to carry out protection to the connecting part.

[0003] However, the traditional high -tension cable intermediate joint protection, it is usually using ordinary rubber or plastic sheath, its protection performance is single limited, can not very good resist under complex environment various threats, and, it lacks the monitoring function of internal insulation state, when cable joint produces serious leakage, can not handle in time, thereby possibly cause serious accident.

[0004] Therefore, we provide a kind of high -tension cable intermediate joint insulation protection device to solve above problems. INVENTION CONTENTS

[0005] To solve the above problems, the utility model provides a kind of high -tension cable intermediate joint insulation protection device to solve the above problems, specific technical scheme is as follows:

[0006] A kind of high -tension cable intermediate joint insulation protection device, including upper cover shell, the lower end of the upper cover shell is provided with lower cover shell, the lower end of the upper cover shell is connected with vertical baffle, the upper cover shell, lower cover shell both are multilayer structure, including shell, the shell is provided with insulation layer in, the insulation layer is provided with inner layer in, shielding mesh cover is arranged between the shell and insulation layer, the lower end of the lower cover shell is connected with alarm box, the alarm box is provided with resistance rod, signal transmitter in, the both sides of the upper cover shell, lower cover shell both ends are provided with sealing gasket, the sealing gasket side end is connected with plastic pad.

[0007] Preferably, the lower cover shell is slidably connected between the vertical baffle, the vertical baffle is the extension of the shell of the upper cover shell, the shell is a high-strength, corrosion-resistant metal alloy material, such as: aluminum alloy.

[0008] Preferably, the insulation layer is a ceramic fiber with excellent insulation performance, the inner layer is a flexible silica gel layer with anti-slip texture on its surface, and the inner layers of the upper cover shell and the lower cover shell combine to form a circular hole with a radius slightly smaller than the radius of the cable.

[0009] Preferably, the shielding mesh cover is woven from metal wires to form a mesh structure, and is made of a non-magnetic material such as copper or aluminum, and each layer structure in the upper cover shell and the lower cover shell is fixed by adhesive.

[0010] Preferably, a guide rod is connected between the alarm box and the shielding mesh cover, the guide rod is made of metal material capable of conducting electricity, the side end of the guide rod is connected with the resistance rod, and the signal transmitter can send a set signal to the remote data end after being powered.

[0011] Preferably, the sealing pad is connected with the inner wall of the shell, the plastic pad is made of soft plastic resistant to corrosion, recesses are formed in the upper cover and the lower cover, the recesses of the upper cover and the lower cover are just staggered and can be spliced with each other, and a sealing strip is arranged in the recess.

[0012] Preferably, a connecting frame is connected in the vertical baffle, a connecting block is connected to the outer end of the lower cover, the connecting block is located in the connecting frame, connecting holes are formed in the connecting frame and the connecting block, and the connecting frame and the connecting block are made of the same material as the shell.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The high-voltage cable intermediate joint insulation protection device has a multi-layer structure of the upper cover and the lower cover, the shell can resist external mechanical impact, chemical corrosion and the like, the insulation layer can effectively prevent the penetration of the electric field, the overall insulation level is improved, the inner layer is closely attached to the cable intermediate joint to prevent the invasion of moisture and dust, the shielding mesh cover can effectively shield electromagnetic interference, and the stability and reliability of cable transmission are ensured. The upper cover and the lower cover have the effects of physical protection, insulation, waterproof and dustproof, and anti-interference, the protection effect is comprehensive, the protection performance is good, various threats in complex environments can be effectively resisted, and the safe and stable operation of the power system is ensured.

[0015] 2. The high-voltage cable intermediate joint insulation protection device is provided with an alarm box, when serious leakage occurs at the cable joint and the insulation layer is broken, causing serious damage, the leakage in the cable will be conducted to the shielding mesh cover, the shielding mesh cover will conduct the current to the alarm box through the guide rod, so that the alarm box is powered, and the signal transmitter is started, which will transmit the information to the remote data end, prompting the maintenance personnel to check and handle the problem of the intermediate joint in time. The resistance rod is used to weaken the strength of the current to avoid that the signal transmitter is burned out by high-strength current in an instant.

[0016] 3. The high-voltage cable intermediate joint insulation protection device is provided with vertical baffles located on both sides of the lower cover, which can effectively block rainwater from entering the connecting gap between the upper cover and the lower cover. The sealing pad can seal the two ends of the upper cover and the lower cover, and the plastic pad can protect the sealing pad from being damaged due to hardening caused by long-term wind blowing and sunlight irradiation, so as to ensure the service life of the sealing pad. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the lower structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the side cross-sectional structure of this utility model;

[0020] Figure 4 For the present utility model Figure 3 Schematic diagram of Area A;

[0021] Figure 5 This is a schematic diagram of the structure of each layer of the upper cover of this utility model;

[0022] Figure 6 This is a schematic diagram showing the connection between the alarm box and the shielding mesh cover of this utility model.

[0023] Figure descriptions: 1. Upper cover; 2. Lower cover; 3. Vertical baffle; 4. Outer shell; 5. Insulation layer; 6. Inner layer; 7. Shielding mesh cover; 8. Alarm box; 801. Resistor rod; 802. Signal transmitter; 9. Sealing gasket; 10. Plastic gasket; 11. Guide rod; 12. Sealing strip; 13. Connecting frame; 14. Connecting block. Detailed Implementation

[0024] The present invention will now be further described with reference to the accompanying drawings.

[0025] Please see Figure 1 — Figure 6 The device includes an upper cover 1, a lower cover 2 at the lower end of the upper cover 1, a vertical baffle 3 at the lower end of the upper cover 1, and the lower cover 2 slidably connected between the vertical baffles 3. The vertical baffles 3 can effectively prevent rainwater from entering the connection gap between the upper cover 1 and the lower cover 2, thereby enhancing the sealing and stability of the device.

[0026] Both the upper cover 1 and the lower cover 2 are multi-layered structures, with each layer bonded and fixed with insulating adhesive to ensure that there is no loosening between the layers. This includes the outer shell 4, and the vertical baffle 3, which is an extension of the outer shell 4 of the upper cover 1. The outer shell 4 and the vertical baffle 3 are integrated to ensure the structural strength of both and facilitate processing and production. The outer shell 4 is made of a high-strength, corrosion-resistant metal alloy material, such as aluminum alloy, which can resist external mechanical impacts and chemical corrosion, thus providing physical protection for the cable. A connecting frame 13 is connected inside the vertical baffle 3, and a connecting block 14 is connected to the outer end of the lower cover 2. The connecting block 14 is located inside the connecting frame 13, and the two have corresponding connecting holes. The connecting block 14 and the connecting frame 13 are connected by bolts to fix the lower cover 2 to the lower end of the upper cover 1. The connecting frame 13 and the connecting block 14 are made of the same material as the outer shell 4.

[0027] An insulating layer 5 is provided inside the outer shell 4. The insulating layer 5 is made of ceramic fiber with excellent insulation properties, which can effectively prevent electric field penetration and improve the overall insulation level. An inner layer 6 is provided inside the insulating layer 5. The inner layer 6 is a flexible silicone layer with anti-slip texture on its surface to increase friction with the cable surface, thereby improving the stability of the device after it is installed on the outer end of the cable and preventing relative movement between the cable and the device. The inner layers 6 of the upper cover 1 and the lower cover 2 are combined to form a circular hole. The radius of the circular hole is slightly smaller than the radius of the cable by 1 to 3 mm. This allows the inner layer 6 to be squeezed during device installation, so that the inner layer 6 fits tightly against the cable surface and prevents the intrusion of moisture and dust.

[0028] A shielding mesh 7 is provided between the outer shell 4 and the insulation layer 5. The shielding mesh 7 is woven from metal wires to form a mesh structure. Its material is a non-magnetic material, such as copper or aluminum. The shielding mesh 7 can prevent the electromagnetic energy inside the cable from radiating outward, reduce electromagnetic pollution to the surrounding environment, and effectively shield the interference of external electromagnetic waves to the inside of the cable, thereby improving the safety and reliability of the power system.

[0029] The lower end of the lower cover 2 is connected to an alarm box 8. Inside the alarm box 8, there is a resistor rod 801 and a signal transmitter 802. The resistor rod 801 is used to reduce the intensity of the current and prevent the high-intensity current from burning out the signal transmitter 802 instantly. A guide rod 11 is connected between the alarm box 8 and the shielding mesh cover 7. The guide rod 11 is made of conductive metal. The side end of the guide rod 11 is connected to the resistor rod 801. When there is current inside the shielding mesh cover 7, the current can be transmitted to the alarm box 8 through the guide rod 11, so that the signal transmitter 802 can be powered and started. After being powered on, the signal transmitter 802 can send a setting signal to the remote data terminal, thereby prompting maintenance personnel to check and deal with the problem of the intermediate connector in time.

[0030] Both the upper cover 1 and the lower cover 2 are provided with sealing gaskets 9 on both sides. The sealing gaskets 9 are used to seal both ends of the upper cover 1 and the lower cover 2. The sealing gaskets 9 are connected to the side ends of the sealing gaskets 9 and are connected to the inner wall of the outer shell 4. The plastic gaskets 10 are made of corrosion-resistant soft plastic, which can protect the sealing gaskets 9 and prevent them from hardening and being damaged by long-term wind and sunlight exposure. The upper cover 1 and the lower cover 2 are both provided with grooves. The grooves of the two are just staggered and can be spliced ​​together. The grooves are provided with sealing strips 12 to enhance the sealing of the connection between the upper cover 1 and the lower cover 2.

[0031] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these embodiments will all fall within the protection scope of the claims of this utility model.

Claims

1. An insulation protection device for high voltage cable joints, comprising an upper housing (1), characterised in that: The lower end of the upper cover (1) is provided with a lower cover (2), the lower end of the upper cover (1) is connected with a vertical baffle (3), the upper cover (1) and the lower cover (2) are both multi-layer structures, comprising an outer shell (4), the inner shell (4) is provided with an insulating layer (5), the insulating layer (5) is provided with an inner layer (6), the outer shell (4) and the insulating layer (5) are provided with a shielding mesh cover (7), the lower end of the lower cover (2) is connected with an alarm box (8), the alarm box (8) is provided with a resistance rod (801), a signal transmitter (802), both sides of the upper cover (1) and the lower cover (2) are provided with a sealing gasket (9), the side end of the sealing gasket (9) is connected with a plastic pad (10).

2. An insulation shield for a high voltage cable joint according to claim 1, characterised in that: The lower cover (2) is slidingly connected between the vertical baffles (3), the vertical baffles (3) are extensions of the outer shell (4) of the upper cover (1), the outer shell (4) is a high-strength, corrosion-resistant metal alloy material, such as aluminum alloy.

3. An insulation shield for a high voltage cable joint according to claim 1, characterized in that: The insulating layer (5) is a ceramic fiber with excellent insulating properties, the inner layer (6) is a flexible silica gel layer with anti-slip texture on its surface, and the inner layers (6) of the upper cover (1) and the lower cover (2) are combined to form a circular hole with a radius that is slightly smaller than the radius of the cable by 1-3 mm.

4. An insulation shield for a high voltage cable joint according to claim 1, characterised in that: The shielding mesh cover (7) is woven from metal wires to form a mesh structure, and is made of non-magnetic material such as copper and aluminum, and each layer structure in the upper cover (1) and the lower cover (2) is fixed by insulating glue.

5. An insulation shield for a high voltage cable joint according to claim 1, characterized in that: The alarm box (8) is connected with the shielding mesh cover (7) through a guide rod (11), the guide rod (11) is a metal material that can conduct electricity, the side end of the guide rod (11) is connected with the resistance rod (801), and the signal transmitter (802) can send a set signal to a remote data terminal after being powered on.

6. An insulation shield for a high voltage cable joint according to claim 1, characterized in that: The sealing gasket (9) is connected with the inner wall of the outer shell (4), the plastic pad (10) is made of corrosion-resistant soft plastic, recesses are formed in the upper cover (1) and the lower cover (2), the recesses of the two are just staggered and can be spliced with each other, and a sealing strip (12) is arranged in the recess.

7. An insulation shield for a high voltage cable joint according to claim 1, characterized in that: The vertical baffle (3) is connected with a connecting frame (13), the lower cover (2) is connected with a connecting block (14), the connecting block (14) is located in the connecting frame (13), and connecting holes are formed in the interiors of the two, and the materials of the connecting frame (13) and the connecting block (14) are the same as those of the outer shell (4).

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