High-temperature-resistant cable cold shrinkage pipe with protection structure

Abstract

The utility model discloses a high temperature resistant cable cold shrink tube with a protection structure, comprising a plastic support ring structure arranged in a cold shrink tube main body, the plastic support ring structure is attached to the cold shrink tube main body, the cold shrink tube main body comprises a silicone rubber composite layer, a shielding layer and an anticorrosion coating, the anti-corrosion coating is arranged outside the silicone rubber composite layer, the shielding layer is arranged inside the silicone rubber composite layer, the silicone rubber composite layer, the shielding layer and the anti-corrosion coating are arranged into a whole, and ceramic silicone rubber is arranged inside the silicone rubber of the cable cold shrinkage pipe, so that the high temperature resistance of the cold shrinkage pipe can be greatly improved; a compact and hard ceramic body can be formed at a high temperature, and the outer part of the cold shrink pipe is coated with the SKF synthetic polymer anti-corrosion waterproof coating, so that the anti-corrosion performance of the cold shrink pipe is improved, and the service life of the cold shrink pipe is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of cable cold shrink tubes, in particular to a high-temperature resistant cable cold shrink tube with a protective structure. Background Art

[0002] Cold shrink tubing generally refers to cold-shrink cable accessories. They retract at room temperature using elastic force, rather than requiring heat like heat-shrink cable accessories. Cold-shrink cable accessories are factory-injected and vulcanized from elastomeric materials, then expanded and lined with plastic spiral supports to form various cable accessory components. During on-site installation, these pre-expanded pieces are placed over the treated cable ends or connectors, and the internal supporting plastic spiral strips are removed and pressed against the cable insulation to form the cable accessory.

[0003] The Chinese patent publication number is CN212784719U, and the authorization announcement date is March 23, 2021. A communication cable cold shrink tube, specifically in the field of cold shrink tube technology, includes a plastic spiral support and a first silicone, the outside of the plastic spiral support is provided with a first silicone, the outside of the first silicone is fixedly connected to a second silicone, the outside of the second silicone is provided with an anti-corrosion structure, one end of the plastic spiral support is provided with a splicing structure, one end of the splicing structure is fixedly connected to a support tube, and an anti-electric structure is provided between the plastic spiral support and the first silicone. The utility model is provided with epoxy resin, an anti-corrosion layer, a placement layer, high-temperature resistant particles and a high-temperature resistant layer. When the cold shrink tube is used for too long, rainwater and high temperature will corrode the surface of the second silicone. In order to prevent this from happening, the epoxy resin inside the anti-corrosion layer will protect the second silicone to prevent rainwater from damaging the surface of the second silicone, and the high-temperature resistant particles inside the high-temperature resistant layer can prevent the high temperature from melting the second silicone.

[0004] The main body of the existing cable cold shrink tube is made of silicone rubber, which has poor high temperature resistance. In the event of a fire or a fire, it cannot protect the internal cables well, and cannot effectively prevent corrosion on the surface of the cold shrink tube. The rubber is easily corroded, which reduces the service life of the cold shrink tube and cannot meet the use requirements. Utility Model Content

[0005] The purpose of the utility model is to provide a high-temperature resistant cable cold shrink tube with a protective structure to solve the problem in the above background technology that the main body of the existing cable cold shrink tube is made of silicone rubber, which has poor high-temperature resistance, cannot protect the internal cables well in the event of fire or fire, cannot effectively prevent corrosion on the surface of the cold shrink tube, and the rubber is easily corroded, which reduces the service life of the cold shrink tube and cannot meet the use requirements.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a high-temperature resistant cable cold shrink tube with a protective structure, comprising a cold shrink tube main body, and further comprising:

[0007] A plastic support ring structure is arranged inside the cold shrink tube body, and the plastic support ring structure is fitted with the cold shrink tube body. The cold shrink tube body includes a silicone rubber composite layer, a shielding layer and an anti-corrosion coating. The anti-corrosion coating is arranged on the outside of the silicone rubber composite layer, and the shielding layer is arranged on the inside of the silicone rubber composite layer. The silicone rubber composite layer, the shielding layer and the anti-corrosion coating are arranged as a whole.

[0008] Preferably, the plastic support ring structure is arranged in a spiral shape.

[0009] Preferably, the silicone rubber composite layer includes a first silicone rubber layer, a ceramic silicone rubber layer and a second silicone rubber layer, the ceramic silicone rubber layer is arranged between the first silicone rubber layer and the second silicone rubber layer, and the first silicone rubber layer, the ceramic silicone rubber layer and the second silicone rubber layer are extrusion-molded.

[0010] Preferably, an annular groove is provided on the outer wall of the cold shrink tube body, there are at least five annular grooves, and the annular grooves are equidistantly arranged on the outer wall of the cold shrink tube body, and the depth of the annular groove is set to two millimeters.

[0011] Preferably, plugs are provided inside both ends of the plastic support ring structure, and the plugs are plugged into the plastic support ring structure.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The utility model device is provided with a silicone rubber composite layer, a shielding layer and an anti-corrosion coating. The silicone rubber matrix has good insulation performance, aging resistance and arc resistance. The ceramic silicone rubber layer improves the heat resistance of the cold shrink tube and can form a dense and hard ceramic body at high temperature, effectively preventing the spread of flames. The ceramic silicone rubber can quickly stop smoking and no longer produces smoke during the subsequent ablation process. The main residue produced during the combustion process is non-toxic silicon dioxide, which will not cause secondary pollution to the environment. The foam layer plays a shielding role to prevent accidents caused by leakage, block the transmission of current, and prevent the current from being transmitted to the outside and causing harm to people. The anti-corrosion coating uses SKF synthetic polymer anti-corrosion and waterproof coating, which is a two-component elastic coating with high elongation and high tensile strength. It can adapt to slight changes in the base layer, maintain the integrity and anti-corrosion effect of the coating, effectively avoid rain corrosion, protect the cable, and increase the service life of the cable.

[0014] 2. The utility model device is provided with an annular groove, which forms a deformation groove on the outside of the cold shrink tube. It plays a protective role when the cold shrink tube is bent. When foreign objects hit the cold shrink tube, the impact force is prevented from directly affecting the inside of the cold shrink tube. The annular groove facilitates the use of a buckle for fastening.

[0015] 3. The utility model device is provided with a plug, which is connected to the two ends of the plastic support ring structure to support the two ends of the plastic support ring structure, thereby preventing the two ends of the plastic support ring structure from being squeezed and loosened, and indirectly protecting the unused cold shrink tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a cross-sectional view of the utility model;

[0018] Figure 3 This is a main structural diagram of the cold shrink tube of the utility model;

[0019] Figure 4 This is a structural diagram of the silicone rubber composite layer of the present utility model.

[0020] In the figure: 1. Cold shrink tube body; 2. Plastic support ring structure; 3. Annular groove; 4. Plug; 5. Silicone rubber composite layer; 6. Shielding layer; 7. Anti-corrosion coating; 8. First silicone rubber layer; 9. Ceramic silicone rubber layer; 10. Second silicone rubber layer. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] See also Figure 1-4 The utility model provides an embodiment of a high-temperature resistant cable cold shrink tube with a protective structure, comprising a cold shrink tube body 1, and further comprising:

[0023] A plastic support ring structure 2 is arranged inside the cold shrink tube body 1, and the plastic support ring structure 2 is fitted with the cold shrink tube body 1. The cold shrink tube body 1 includes a silicone rubber composite layer 5, a shielding layer 6 and an anti-corrosion coating 7. The anti-corrosion coating 7 is arranged on the outside of the silicone rubber composite layer 5, and the shielding layer 6 is arranged on the inside of the silicone rubber composite layer 5. The silicone rubber composite layer 5, the shielding layer 6 and the anti-corrosion coating 7 are arranged as a whole.

[0024] During use: the cold shrink tube is put on the outside of the cable, one end of the plastic support ring structure 2 is untied and pulled, and the plastic support ring structure 2 is removed. The cold shrink tube lacks support and generates a force close to the cable, which firmly fixes the cold shrink tube on the cable and provides good protection for the cable; the anti-corrosion coating 7 adopts SKF synthetic polymer anti-corrosion and waterproof coating, which is a two-component elastic coating with high elongation and high tensile strength. It can adapt to slight changes in the base layer, maintain the integrity and anti-corrosion effect of the coating, effectively avoid rain corrosion, protect the cable, and increase the service life of the cable. The shielding layer 6 is made of a foam layer, which plays a shielding role, can prevent the transmission of current, prevent the current from being transmitted to the outside to cause harm to people, prevent accidents caused by leakage, and can also protect the cable and increase the service life of the cable.

[0025] See also Figure 1 and Figure 2 , the plastic support ring structure 2 is arranged in a spiral shape.

[0026] See also Figure 3 and Figure 4 The silicone rubber composite layer 5 includes a first silicone rubber layer 8, a ceramic silicone rubber layer 9 and a second silicone rubber layer 10. The ceramic silicone rubber layer 9 is arranged between the first silicone rubber layer 8 and the second silicone rubber layer 10, and the first silicone rubber layer 8, the ceramic silicone rubber layer 9 and the second silicone rubber layer 10 are extrusion-molded. The silicone rubber matrix has good insulation performance, aging resistance and arc resistance. The ceramic silicone rubber layer 9 improves the heat resistance of the cold shrink tube and can form a dense and hard ceramic body at high temperature, effectively preventing the spread of flames. The ceramic silicone rubber can quickly stop smoking and no longer produces smoke during the subsequent ablation process. The main residue produced during the combustion process is non-toxic silicon dioxide, which will not cause secondary pollution to the environment.

[0027] See also Figure 1 and Figure 2 An annular groove 3 is provided on the outer wall of the cold shrink tube body 1. There are at least five annular grooves 3, and the annular grooves 3 are equidistantly arranged on the outer wall of the cold shrink tube body 1. The depth of the annular groove 3 is set to two millimeters. The annular groove 3 forms a deformation groove on the outside of the cold shrink tube, which plays a protective role when the cold shrink tube is bent. When foreign objects hit the cold shrink tube, the impact force is prevented from directly affecting the inside of the cold shrink tube. With the help of the annular groove 3, it is convenient to use a buckle for clamping and fixing.

[0028] See also Figure 1 and Figure 2 Plugs 4 are provided inside both ends of the plastic support ring structure 2, and the plugs 4 are plugged into the plastic support ring structure 2. The plugs 4 are connected to the two ends of the plastic support ring structure 2 to support the two ends of the plastic support ring structure 2, preventing the two ends of the plastic support ring structure 2 from being squeezed and loosened, thereby indirectly protecting the unused cold shrink tube.

[0029] Working principle: The cold shrink tube is put on the outside of the cable, one end of the plastic support ring structure 2 is untied and pulled, and the plastic support ring structure 2 is removed. The cold shrink tube lacks support and generates a force close to the cable, which firmly fixes the cold shrink tube on the cable and provides good protection for the cable; Anti-corrosion coating 7SKF synthetic polymer anti-corrosion and waterproof coating is a two-component elastic coating with high elongation and high tensile strength. It can adapt to slight changes in the base layer, maintain the integrity and anti-corrosion effect of the coating, effectively avoid rain corrosion, protect the cable, and increase the service life of the cable. The silicone rubber matrix has good insulation performance, aging resistance and arc resistance. The ceramic silicone rubber layer 9 improves the heat resistance of the cold shrink tube and can form a dense and hard ceramic body at high temperature, which is effective To prevent the spread of flames, the ceramic silicone rubber can quickly stop smoking and no longer produce smoke during the subsequent ablation process. The main residue produced during the combustion process is non-toxic silicon dioxide, which will not cause secondary pollution to the environment. The foam layer plays a shielding role, which can prevent the transmission of current, prevent the current from being transmitted outward and causing harm to people, prevent accidents caused by leakage, and protect the cables; the annular groove 3 forms a deformation groove on the outside of the cold shrink tube, which plays a protective role when bending the cold shrink tube, and avoids the impact force from directly affecting the inside of the cold shrink tube when foreign objects hit the cold shrink tube. The plug 4 is connected to the two ends of the plastic support ring structure 2 to support the two ends of the plastic support ring structure 2 to prevent the two ends of the plastic support ring structure 2 from being squeezed and loose, thereby indirectly protecting the unused cold shrink tubes.

[0030] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-temperature resistant cable shrink tube with a protective structure, comprising a shrink tube body (1), characterized in that: Also includes: A plastic support ring structure (2) is arranged inside the cold shrink tube body (1), and the plastic support ring structure (2) is in contact with the cold shrink tube body (1); the cold shrink tube body (1) comprises a silicone rubber composite layer (5), a shielding layer (6) and an anti-corrosion coating (7); the anti-corrosion coating (7) is arranged outside the silicone rubber composite layer (5), the shielding layer (6) is arranged inside the silicone rubber composite layer (5), and the silicone rubber composite layer (5), the shielding layer (6) and the anti-corrosion coating (7) are arranged as a whole.

2. The high-temperature resistant cable cold shrink tube with a protective structure according to claim 1, characterized in that: The plastic support ring structure (2) is arranged in a spiral shape.

3. The high-temperature resistant cable cold shrink tube with a protective structure according to claim 1, characterized in that: The silicone rubber composite layer (5) comprises a first silicone rubber layer (8), a ceramic silicone rubber layer (9) and a second silicone rubber layer (10); the ceramic silicone rubber layer (9) is arranged between the first silicone rubber layer (8) and the second silicone rubber layer (10); and the first silicone rubber layer (8), the ceramic silicone rubber layer (9) and the second silicone rubber layer (10) are formed by extrusion.

4. The high-temperature resistant cable cold shrink tube with a protective structure according to claim 1, characterized in that: An annular groove (3) is provided on the outer wall of the cold shrink tube body (1), at least five annular grooves (3) are provided, and the annular grooves (3) are equidistantly arranged on the outer wall of the cold shrink tube body (1), and the depth of the annular grooves (3) is set to two millimeters.

5. The high-temperature resistant cable cold shrink tube with a protective structure according to claim 1, characterized in that: Plugs (4) are provided inside both ends of the plastic support ring structure (2), and the plugs (4) are plugged into the plastic support ring structure (2).

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