Insulating moisture-proof device for buried cable joint

Abstract

The application discloses a kind of buried cable joint insulation damp-proof protection device of cable protection technical field, including protection roll, sealing block and portable air pump, protection roll is the multilayer reel with elasticity, the free end of the both ends of protection roll is respectively provided with outer adhesion rod and inner adhesion rod, inner adhesion rod is in the inside of protection roll, and outer adhesion rod is at the outside of protection roll, adjacent protection roll is connected by connecting piece, and multiple groups of protection roll spliced at head and tail form cable protection piece, connecting piece includes: air cavity, air cavity is opened in connecting piece, and the inner wall of connecting piece has elasticity, air cavity can be fixed and clamped in connecting piece after gas injection and expansion;Elastic limit piece, elastic limit piece is provided with two groups and symmetrically installed in the inner wall of connecting piece, the outer layer of protection roll both ends is provided with limit groove, and elastic limit piece can be connected into limit groove, the present application increases the protection thickness of cable surface by the multilayer winding of protection roll, and the adaptability of equipment to cable thickness is strong, and space utilization is high.

Description

Technical Field

[0001] This invention relates to the field of cable protection technology, specifically to an insulation and moisture-proof protection device for buried cable joints. Background Technology

[0002] A protective layer needs to be installed on the surface of buried cables to prevent moisture and protect the cable surface, thereby increasing the service life of the cable.

[0003] To increase the protective strength of existing cable protection equipment, the only option is to increase the thickness of the protective layer. However, the thicker the protective layer, the larger the size of the equipment. Moreover, the internal installation space of the equipment is generally fixed, and the range of adjustment is limited, making it unsuitable for protecting cables of different thicknesses. Due to the limited underground space, most protective equipment cannot increase its thickness while ensuring sufficient installation space, thus limiting the strength of the protective equipment.

[0004] Based on this, the present invention designs an insulation and moisture-proof protection device for underground cable joints to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an insulation and moisture-proof protection device for buried cable joints, which increases the protective thickness of the cable surface by wrapping the protective roll in multiple layers, and the device has strong adaptability to cable thickness and high space utilization.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An insulating and moisture-proof protection device for buried cable joints includes a protective roll, a sealing block, and a portable air pump. The protective roll is a multi-layered, elastic roll. An outer adhesive rod and an inner adhesive rod are respectively provided at the two free ends of the protective roll. The inner adhesive rod is located inside the protective roll, while the outer adhesive rod is located on the outside of the protective roll. Adjacent protective rolls are connected by connectors. Multiple sets of end-to-end protective rolls form a cable protection component. The connectors include:

[0008] An air cavity is provided inside the connector. The inner wall of the connector is elastic. After the air cavity is injected with gas and expands, it can fix and clamp the protective roll inside the connector.

[0009] The elastic limiting member is provided in two sets and symmetrically installed on the inner wall of the connector. The outer layer of the protective roll is provided with limiting grooves at both ends, and the elastic limiting member can be snapped into the limiting groove.

[0010] Preferably, both ends of the inner wall of the connector are fixedly installed with adhesive layers, which can be adhered to the surface of the protective roll. The two sets of elastic limiting members are located between the two sets of adhesive layers, and a telescopic end is provided at the middle position of the outer side of the connector.

[0011] Preferably, the elastic limiting member includes an inner mounting ring, a telescopic rod, and an embedding block. The inner mounting ring is fixedly connected to the connecting member. The telescopic rod is equidistantly connected to the inner wall of the inner mounting ring. An embedding block is fixedly installed at the end of the telescopic rod away from the inner mounting ring. The embedding block can be embedded into the limiting groove. The telescopic rod is a spring rod.

[0012] Preferably, a one-way valve is fixedly installed at one end of the outer side of the connector, and the portable air pump can inject gas into the air chamber through the one-way valve. A vent valve is provided on the connector, and when the vent valve is opened, the gas in the air chamber can be quickly discharged.

[0013] Preferably, the sealing block can be completely embedded into the protective roll, and after the sealing block is inserted, it can block the limiting groove. After the sealing block is inserted into the protective roll, it can seal both ends of the protective roll. The sealing block has multiple sets of injection nozzles on one end surface near the inside of the protective roll.

[0014] Preferably, the portable air pump is capable of injecting gas into the compartment of the protective roll through the injection nozzle.

[0015] Preferably, both the outer and inner adhesive rods have a protective film on their outer surfaces. After the protective film is removed from the outer adhesive rod, it can be fixedly adhered to the outer surface of the protective roll, and after the protective film is removed from the inner adhesive rod, it can be fixedly adhered to the cable surface.

[0016] Preferably, the protective roll has a multi-layer winding structure with ≥3 winding layers; the outer surface of the connector is made of rigid plastic.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. In this invention, a protective roll is wound around the surface of the cable, forming multiple protective layers on the cable surface. The multi-layered protective roll forms a high-thickness protective layer on the cable surface. The cable is inside the protective roll, and no installation space needs to be reserved inside the protective roll. The protective roll itself is elastic and can adaptively conform to the cable surface according to the cable thickness, so that the protective roll can be tightly attached to the cable surface, avoiding the waste of installation space. Therefore, the thickness of the protective layer does not need to be reduced due to reserving installation space for the cable.

[0019] 2. In this invention, the protective device consists of multiple sets of protective rolls that form a retaining layer by their ends. The protective rolls themselves are relatively short and wrap around the outside of the long cable. This makes the protective device easier to transport. On the other hand, the shorter length of the protective rolls reduces the probability of breakage compared to the previous integrated long strip protective devices. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the splicing structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the protective roll structure in this invention;

[0023] Figure 3 This is a schematic diagram of the protective roll structure from a side view in this invention;

[0024] Figure 4 This is a schematic diagram of the sealing block in this invention;

[0025] Figure 5 This is a cross-sectional view of the connector in this invention;

[0026] Figure 6 This is a schematic diagram of the connector structure in this invention.

[0027] Figure 7 This is a cross-sectional view of the structure in its assembled state in this invention.

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 1. Protective roll; 101. Limiting groove; 102. Outer adhesive rod; 103. Inner adhesive rod; 2. Connector; 3. Sealing block; 301. Injection nozzle; 4. Inner mounting ring; 5. Embedded block; 6. Telescopic rod; 7. Air cavity; 8. Adhesive layer; 9. One-way valve; 10. Vent valve; 11. Telescopic section. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figures 1-7 The present invention provides a technical solution:

[0032] An insulating and moisture-proof protection device for buried cable joints includes a protective roll 1, a sealing block 3, and a portable air pump. The protective roll 1 is a flexible multi-layered roll. Outer adhesion rods 102 and inner adhesion rods 103 are respectively provided at the free ends of both ends of the protective roll 1. The inner adhesion rods 103 are located inside the protective roll 1, while the outer adhesion rods 102 are located on the outside of the protective roll 1. Adjacent protective rolls 1 are connected by connectors 2. Multiple sets of end-to-end spliced ​​protective rolls 1 form a cable protection device. The connectors 2 include:

[0033] The air chamber 7 is provided inside the connector 2. The inner wall of the connector 2 is elastic. After the air chamber 7 is injected with gas and expands, it can fix and clamp the protective roll 1 inside the connector 2.

[0034] The elastic limiting component is provided in two sets and is symmetrically installed on the inner wall of the connector 2. The outer ends of the protective roll 1 are provided with limiting grooves 101, and the elastic limiting component can be snapped into the limiting grooves 101.

[0035] In this invention, a protective roll 1 is wound around the surface of the cable, forming multiple protective layers. The multiple layers of the protective roll 1 create a thick protective layer on the cable surface. The cable is located inside the protective roll 1, and no installation space needs to be reserved inside the protective roll 1. The protective roll 1 itself is elastic and can adaptively conform to the cable surface according to the cable thickness, allowing the protective roll 1 to fit tightly against the cable surface, avoiding wasted installation space and eliminating the need to reduce the thickness of the protective layer due to reserving installation space for the cable. In this invention, the protective device consists of multiple sets of protective rolls 1 forming a retaining layer end-to-end. The protective roll 1 itself is relatively short and wraps around the outside of a long cable. This facilitates the transportation of the protective device. Furthermore, the shorter length of the protective roll 1, compared to previous integrated long strip protective devices, reduces the probability of breakage and allows for cable-assisted routing. Adjacent protective rolls 1 are connected by connectors 2. Elastic limiting elements within the connectors 2 ensure that the ends of the two sets of protective rolls 1 are tightly abutted, while the expansion of the air cavity 7 clamps and positions the protective roll 1 within the connectors 2.

[0036] In this invention, adhesive layers 8 are fixedly installed at both ends of the inner wall of the connector 2. The adhesive layers 8 can be adhered to the surface of the protective roll 1. Two sets of elastic limiting members are located between the two sets of adhesive layers 8. A telescopic end 11 is provided at the middle position of the outer side of the connector 2. The protective roll 1 is inserted from both ends of the connector 2. After insertion, the ends of the two sets of protective rolls 1 abut against each other. At this time, the elastic limiting members abut against the limiting groove 101 to ensure that the ends of the protective rolls 1 abut against each other more tightly. After abutting, gas is injected into the air chamber 7 by a portable air pump. The gas causes the inner layer of the connector to expand. After expansion, the adhesive layers 8 of the connector 2 adhere to the surface of the protective roll 1, thereby fixing the connector 2 and the protective roll 1. Furthermore, the air pressure in the air chamber 7 is used to fix and clamp the protective roll 1.

[0037] The elastic limiting component includes an inner mounting ring 4, a telescopic rod 6, and an insert block 5. The inner mounting ring 4 is fixedly connected to the connector 2. The telescopic rod 6 is equidistantly connected to the inner wall of the inner mounting ring 4. An insert block 5 is fixedly installed at the end of the telescopic rod 6 away from the inner mounting ring 4. The insert block 5 can be embedded into the limiting groove 101. The telescopic rod 6 is a spring rod. In this invention, after one end of the protective roll 1 is inserted into the connector 2, it compresses the telescopic rod 6. When the limiting groove 101 moves to the position of the insert block 5, the insert block 5 can be embedded into the limiting groove 101 under the action of the telescopic rod 6. Through the interaction between the insert block 5 and the limiting groove 101, the axial movement of the protective roll 1 within the connector 2 is restricted.

[0038] One-way valve 9 is fixedly installed at one end of the outer side of connector 2. The portable air pump can inject gas into the air chamber 7 through the one-way valve 9. A vent valve 10 is provided on connector 2. When the vent valve 10 is opened, the gas in the air chamber 7 can be quickly discharged. In this invention, the portable air pump inputs gas into the air chamber 7 through the one-way valve, thereby causing the inner wall of connector 2 to expand and clamp the protective roll 1. When it is necessary to disassemble the protective roll 1, the gas in connector 2 can be discharged through the vent valve 10, thereby allowing the protective roll 1 to be pulled out from connector 2.

[0039] The sealing block 3 can be fully embedded into the protective roll 1. After insertion, the sealing block 3 can block the limiting groove 101 and seal both ends of the protective roll 1. The surface of the sealing block 3 near the inside of the protective roll 1 is provided with multiple sets of injection nozzles 301. In this invention, after multiple sets of protective rolls 1 are spliced ​​on the cable surface, the sealing block 3 seals the protective roll 1 at the cable end. The sealing block 3 is embedded into the protective roll 1 and blocks the limiting groove 101. At this time, gas can be injected into the gaps between the multiple layers of the protective roll 1 through the injection nozzles 301. The gas fills the gaps between the multiple layers of the protective roll 1, forming another protective layer and increasing the protective strength.

[0040] The portable air pump can inject gas into the compartment of the protective roll 1 through the injection nozzle 301.

[0041] Both the outer adhesion rod 102 and the inner adhesion rod 103 have protective films on their outer surfaces. After the protective film is removed from the outer adhesion rod 102, it can be fixedly adhered to the outer surface of the protective roll 1. Similarly, after the protective film is removed from the inner adhesion rod 103, it can be fixedly adhered to the cable surface. In this invention, when winding the protective roll 1, the inner adhesion rod 103 is adhered to the cable surface, and after multiple layers are wound, the outer adhesion rod 102 is adhered to the outer layer of the protective roll 1. The outer adhesion rod 102 and its edges form a seal with the protective roll 1.

[0042] Among them, the protective roll 1 has a multi-layer winding structure with ≥3 winding layers; the outer surface of the connector 2 is made of hard plastic.

Claims

1. An insulating and moisture-proof protection device for an underground cable joint, comprising a protective roll (1), a sealing block (3), and a portable air pump, characterized in that: The protective roll (1) is a flexible multi-layered roll. The two free ends of the protective roll (1) are respectively provided with an outer adhesive rod (102) and an inner adhesive rod (103). The inner adhesive rod (103) is located inside the protective roll (1), while the outer adhesive rod (102) is located outside the protective roll (1). Adjacent protective rolls (1) are connected by connectors (2). Multiple sets of end-to-end protective rolls (1) form a cable protection component. The connectors (2) include: Air cavity (7), the connector (2) has an air cavity (7) inside, the inner wall of the connector (2) is elastic, the air cavity (7) is injected with gas and expands to fix the protective roll (1) in the connector (2); The elastic limiting member is provided in two sets and is symmetrically installed on the inner wall of the connector (2). The outer ends of the protective roll (1) are provided with limiting grooves (101). The elastic limiting member can be snapped into the limiting grooves (101).

2. The insulation and moisture-proof protection device for a buried cable joint according to claim 1, characterized in that: The connector (2) has adhesive layers (8) fixedly installed at both ends of its inner wall. The adhesive layers (8) can be adhered to the surface of the protective roll (1). The two sets of elastic limiting members are located between the two sets of adhesive layers (8). The connector (2) has a telescopic end (11) at the middle position of its outer side.

3. The insulation and moisture-proof protection device for a buried cable joint according to claim 1, characterized in that: The elastic limiting component includes an inner mounting ring (4), a telescopic rod (6), and an embedding block (5). The inner mounting ring (4) is fixedly connected to the connector (2). The telescopic rod (6) is equidistantly connected to the inner wall of the inner mounting ring (4). An embedding block (5) is fixedly installed at one end of the telescopic rod (6) away from the inner mounting ring (4). The embedding block (5) can be embedded into the limiting groove (101). The telescopic rod (6) is a spring rod.

4. The insulation and moisture-proof protection device for a buried cable joint according to claim 3, characterized in that: One-way valve (9) is fixedly installed on one end of the outer side of the connector (2). The portable air pump can inject gas into the air chamber (7) through the one-way valve (9). A vent valve (10) is provided on the connector (2). When the vent valve (10) is opened, the gas in the air chamber (7) can be quickly discharged.

5. The insulation and moisture-proof protection device for a buried cable joint according to claim 1, characterized in that: The sealing block (3) can be fully embedded into the protective roll (1). After the sealing block (3) is inserted, it can block the limiting groove (101). After the sealing block (3) is inserted into the protective roll (1), it can seal both ends of the protective roll (1). The sealing block (3) has multiple sets of injection nozzles (301) on one end surface near the inside of the protective roll (1).

6. The insulation and moisture-proof protection device for a buried cable joint according to claim 5, characterized in that: The portable air pump can inject gas into the compartment of the protective roll (1) through the injection nozzle (301).

7. The insulation and moisture-proof protection device for a buried cable joint according to claim 1, characterized in that: The outer surface of both the outer adhesive rod (102) and the inner adhesive rod (103) is provided with a protective film. After the outer adhesive rod (102) is peeled off the protective film, it can be fixedly adhered to the outer surface of the protective roll (1). After the inner adhesive rod (103) is peeled off the protective film, it can be fixedly adhered to the surface of the cable.

8. The insulation and moisture-proof protection device for a buried cable joint according to claim 1, characterized in that: The protective roll (1) has a multi-layer winding structure with ≥3 winding layers; the outer surface of the connector (2) is made of hard plastic.

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