Cold contraction joint for insulating tube bus

Abstract

The utility model discloses a cold shrink joint for an insulating tube bus, which relates to the technical field of electric power engineering, and comprises a cold shrink sleeve, the outer surface of the cold shrink sleeve is connected with a self-adhesive layer, and two sides of the back of the self-adhesive layer are provided with anti-adhesive layers; the outer surface of the self-adhesive layer is connected with a protection strip, and a cutting opening is formed in the outer surface of the protection strip. A mounting plug penetrates through the upper portion of the outer surface of the protection strip, and an anti-biting cone penetrates through the outer surface of the mounting plug. Through the arrangement of the protective strip, the anti-biting cone, the self-adhesion layer and the anti-adhesion layer, the self-adhesion layer is prevented from being adhered to a product package, dust and other foreign objects in the transportation process through the anti-adhesion layer; after the cold shrink casing pipe is installed, the anti-sticking layer is torn off from the self-sticking layer, and then the self-sticking layer and the outer ring of the cold shrink casing pipe are bonded together, so that the installation work of the protective strip and the anti-biting cone is completed. The combination of the protective strip and the anti-bite cone can effectively prevent animals from climbing, biting and scratching the cold shrink sleeve, and the safety protection performance is improved.

Description

Technical Field

[0001] This utility model relates to the field of power engineering technology, specifically to a cold shrink joint for insulated busbars. Background Technology

[0002] Cold shrink joints are components made by injection vulcanization of elastomer materials in the factory, followed by diameter expansion and lining with plastic spiral supports. During on-site installation, the cold shrink joint is placed on the treated cable end or joint, and the internal supporting plastic spiral strip is pulled out. At room temperature, it relies on elastic recoil force to wrap around the cable end or joint, thereby forming a seal or insulation and providing a protective effect.

[0003] Existing cold shrink joints for insulated busbars are usually made of highly elastic rubber materials, such as silicone and EPDM. These types of rubber have good elasticity and can achieve the cold shrink effect, but their tear resistance and puncture resistance are weak. When used outdoors or indoors, rodents such as rats and squirrels or other animals can easily gnaw on the cold shrink joints, causing structural damage. This can easily lead to the exposure of cable ends or joints, increasing the probability of electrical faults such as leakage and short circuits. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a cold shrink joint for insulated busbars to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cold shrink connector for insulated busbars, comprising a cold shrink sleeve, wherein a self-adhesive layer is connected to the outer surface of the cold shrink sleeve, and anti-adhesive layers are provided on both sides of the back of the self-adhesive layer; a protective strip is connected to the outer surface of the self-adhesive layer, and a cutting opening is provided on the outer surface of the protective strip; an installation plug is penetrated above the outer surface of the protective strip, and an anti-biting cone is penetrated on the outer surface of the installation plug.

[0006] By adopting the above technical solution, during construction, the anti-adhesive layer prevents the self-adhesive layer from sticking to product packaging, dust, and other foreign objects during transportation. Workers first prepare the cable connector, then place the cold-shrink tubing over the connector and remove the support strip. After installing the cold-shrink connector, workers peel the anti-adhesive layer off the self-adhesive layer and then adhere the self-adhesive layer to the outer ring of the cold-shrink tubing, thus completing the installation of the protective strip and anti-bite cone. The presence of the cutting notch guides the cutting tool, facilitating the cutting of the protective strip and reducing blade deviation during cutting. The cut protective strip fits the reduced diameter of the cold-shrink tubing, preventing the protective strip width from exceeding the reduced diameter of the cold-shrink tubing, which could lead to problems. If installation fails, the cut-off protective strips and other protective strips can still be adhered together with other cold shrink tubing using the self-adhesive layer, allowing for reuse and reducing waste. The protective strips are made of TPU material, which has good weather resistance, flexibility, and elasticity, adapting to the bending of the cold shrink tubing. TPU material is also strong, tear-resistant, and abrasion-resistant, resisting animal bites and scratches. Multiple bite cones are densely distributed on the surface of the protective strip. These bite cones are hard and raised, forming a physical barrier or generating a pain deterrent, significantly reducing climbing and biting. The bite cones can be removed from the mounting plug by rotating them, allowing for replacement if a bite cone is damaged or worn, thus ensuring the protective effect.

[0007] Furthermore, the cold shrink tubing is provided with support bars inside.

[0008] By adopting the above technical solution, it is convenient to support the expanded diameter cold shrink tubing and avoid the cold shrink tubing shrinking inward before installation, which would affect the installation operation.

[0009] Furthermore, the protective strip is made of TPU material.

[0010] By adopting the above technical solution, the protective strip is made of TPU material, which has good weather resistance and is flexible and elastic, and can adapt to the bending of cold shrink tubing. In addition, TPU material has high strength, is tear-resistant and wear-resistant, and can resist animal bites and scratches.

[0011] Furthermore, the cut opening has a "V" shaped cross-section.

[0012] By adopting the above technical solution, the presence of the cutting opening can guide the cutting tool, thereby facilitating the cutting of the protective strip by the staff and reducing the occurrence of blade deviation during cutting. The cut protective strip can be adapted to the reduced diameter of the cold shrink tubing, avoiding the phenomenon that the protective strip width is greater than the reduced diameter of the cold shrink tubing, which would prevent the protective strip from being installed normally. The cut protective strip and other protective strips can still be glued together with other cold shrink tubing through the self-adhesive layer, which can be reused to reduce waste.

[0013] Furthermore, the anti-bite cone is detachably connected to the mounting plug via threads, and the mounting plug is fixedly connected to the protective strip via polyurethane adhesive.

[0014] By adopting the above technical solution, the anti-bite cone can be removed from the mounting plug by rotation, and can be replaced after a certain anti-bite cone is damaged or worn, thereby ensuring the protective effect.

[0015] Furthermore, multiple anti-bite cones and mounting plugs are provided, and the multiple anti-bite cones and mounting plugs are distributed in a rectangular array.

[0016] By adopting the above technical solution, multiple anti-bite cones are densely distributed on the surface of the protective strip. The anti-bite cones have high hardness and a raised shape, which can form a physical barrier or generate pain deterrence, significantly reducing the occurrence of climbing and biting.

[0017] Furthermore, the self-adhesive layer is made of UV-cured acrylic pressure-sensitive adhesive using a coating process, and the anti-adhesive layer is made of PET release paper material.

[0018] By adopting the above technical solution, the anti-adhesive layer is used to prevent the self-adhesive layer from sticking to the product packaging, dust and other foreign objects during transportation. The workers peel off the anti-adhesive layer from the self-adhesive layer and then stick the self-adhesive layer to the outer ring of the cold shrink tubing, thereby completing the installation of the protective strip and anti-bite cone.

[0019] Furthermore, both the anti-bite cone and the mounting plug are made of PC material modified with UV stabilizer or 304 stainless steel.

[0020] By adopting the above technical solutions, the anti-bite cones and mounting plugs made of PC material have high hardness, low cost, and impact resistance, while the anti-bite cones and mounting plugs made of 304 stainless steel material have corrosion resistance, high hardness, and better mechanical properties than PC, but the cost is higher than PC.

[0021] Furthermore, the tip of the anti-bite cone is round or pointed.

[0022] By adopting the above technical solutions, round-headed anti-bite cones can avoid harming the animal's mouth and body, and are suitable for public places and meet animal protection ethics requirements. However, their protective effect is not as good as that of pointed cones. Pointed anti-bite cones can penetrate the animal's mouth or body to cause pain and have a deterrent effect, providing better protection. However, they are more likely to cause harm to people and protected animals. The specific use depends on the surrounding situation. If there are many people and protected animals nearby, round-headed cones should be used. If there are no people or protected animals nearby, and only animals such as rats are affected, pointed cones can be used.

[0023] In summary, the present invention has the following main advantages:

[0024] 1. This utility model, through the setting of a protective strip, anti-bite cones, a self-adhesive layer, and an anti-adhesive layer, prevents the self-adhesive layer from sticking to product packaging, dust, or other foreign objects during transportation. After the cold shrink tubing is installed, the anti-adhesive layer is peeled off from the self-adhesive layer, and then the self-adhesive layer is adhered to the outer ring of the cold shrink tubing, thus completing the installation of the protective strip and anti-bite cones. The protective strip is made of TPU material, which has good weather resistance, flexibility, and elasticity, and can adapt to the bending of the cold shrink tubing. The TPU material is also high in strength, tear-resistant, and wear-resistant, resisting animal bites and scratches. Multiple anti-bite cones are densely distributed on the surface of the protective strip. The anti-bite cones have high hardness and a raised shape, which can form a physical barrier or generate pain deterrence, significantly reducing the occurrence of climbing and biting. The combination of the protective strip and anti-bite cones can effectively prevent animals from climbing, biting, and scratching the cold shrink tubing, improving safety protection.

[0025] 2. This utility model features a cutting notch that guides the cutting tool, facilitating the cutting of the protective strip and reducing blade deviation during cutting. The cut protective strip is compatible with the reduced diameter of the cold shrink tubing, preventing the strip from being unable to be installed properly due to its width exceeding the reduced diameter. The cut protective strip and other protective strips can still be adhered together with other cold shrink tubing using a self-adhesive layer, allowing for reuse and reducing waste; it also facilitates installation.

[0026] 3. This utility model, through the setting of anti-bite cone and mounting plug, allows the anti-bite cone to be removed from the mounting plug by rotation, so that it can be replaced after a certain anti-bite cone is damaged or worn, thereby ensuring the protective effect; and it is convenient to replace. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 For the present utility model Figure 1 Enlarged view of the structure at point A in the image;

[0029] Figure 3 This is a schematic diagram of the protective strip structure before installation of this utility model;

[0030] Figure 4 For the present utility model Figure 3 Enlarged view of the structure at point B in the image;

[0031] Figure 5 This is a schematic diagram of the cold shrink tubing structure before installation of this utility model.

[0032] In the diagram: 1. Cold shrink tubing; 2. Support strip; 3. Protective strip; 4. Anti-bite cone; 5. Mounting plug; 6. Cutting end; 7. Self-adhesive layer; 8. Anti-stick layer. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0034] The embodiments of this utility model will be described below based on its overall structure.

[0035] Example 1:

[0036] A cold shrink connector for insulated busbars, such as Figures 1-4 As shown, the device includes a cold shrink tubing 1, with a self-adhesive layer 7 attached to its outer surface. The self-adhesive layer 7 is made of UV-cured acrylic pressure-sensitive adhesive using a coating process. Anti-adhesive layers 8 are located on both sides of the back of the self-adhesive layer 7, made of PET release paper. A protective strip 3 is attached to the outer surface of the self-adhesive layer 7. The protective strip 3 is made of TPU material and has a cutting opening 6 on its outer surface, with a "V"-shaped cross-section. A mounting plug 5 penetrates the outer surface of the protective strip 3 and is fixedly connected to it using polyurethane adhesive. An anti-bite cone 4 penetrates the outer surface of the mounting plug 5 and is detachably connected to the mounting plug 5 via threads. Multiple bite cones 4 and mounting plugs 5 are provided, and the multiple bite cones 4 and mounting plugs 5 are distributed in a rectangular array. The protective strip 3 is made of TPU material, which has good weather resistance and is flexible and elastic, and can adapt to the bending of the cold shrink tubing 1. The TPU material is also strong, tear-resistant, and wear-resistant, and can resist animal biting and scratching. Multiple bite cones 4 are densely distributed on the surface of the protective strip 3. The bite cones 4 have high hardness and are raised in shape, which can form a physical barrier or generate pain deterrence, significantly reducing the occurrence of climbing and biting. The bite cones 4 can be removed from the mounting plugs 5 by rotating them, and can be replaced after a bite cone 4 is damaged or worn, thus ensuring the protective effect.

[0037] See Figure 5 In the above embodiment, a support bar 2 is provided inside the cold shrink tubing 1 to facilitate support of the expanded diameter cold shrink tubing 1 and prevent the cold shrink tubing 1 from shrinking inward before installation, thus affecting the installation operation.

[0038] Example 2:

[0039] Based on the above embodiment one, the following settings are made to make it applicable to more scenarios.

[0040] See Figures 1-4In the above embodiments, both the anti-bite cone 4 and the mounting plug 5 are made of PC material modified with UV stabilizer or 304 stainless steel. The anti-bite cone 4 and mounting plug 5 made of PC material have high hardness, low cost, and impact resistance, while the anti-bite cone 4 and mounting plug 5 made of 304 stainless steel are corrosion resistant, have high hardness, and have better mechanical properties than PC. The tip of the anti-bite cone 4 is either round or pointed. The round-tipped anti-bite cone 4 can avoid injuring the animal's mouth and body, is suitable for public places and meets animal protection ethics requirements, but its protective effect is not as good as that of the pointed tip. The pointed anti-bite cone 4 can pierce the animal's mouth or body to cause pain and have a deterrent effect, providing better protection, but it is easy to cause harm to people and protected animals. The specific use depends on the surrounding situation. If there are dense people and protected animals nearby, the round tip is used. If there are no people or protected animals nearby, and only animals such as rats are affected, the pointed tip can be used.

[0041] The implementation principle of this utility model is as follows: First, the protective strip 3 is formed by injection molding. One mold has a V-shaped core and a rod-shaped core, and the other mold also has a rod-shaped core. After TPU injection molding, a protective strip 3 with a cutting opening 6 and a through hole is formed on the surface. After the surface of the mounting plug 5 is roughened, the mounting plug 5 with the anti-bite cone 4 is fixed in the through hole on the surface of the protective strip 3 with polyurethane adhesive. After the polyurethane adhesive cures, the fixing of the mounting plug 5 is completed. UV-cured acrylic is coated on the back of the protective strip 3 and the mounting plug 5. The acid-pressure sensitive adhesive is then cured by UV, and the release layer 8 is then applied; thus completing the production of the protective strip 3, anti-bite cone 4, mounting plug 5, cutting notch 6, self-adhesive layer 7, and release layer 8. It should be noted that the mounting plug 5 can be interference-fitted with the through hole to increase adhesion, and the back of the protective strip 3 and mounting plug 5 can be roughened to increase the adhesive strength between the self-adhesive layer 7 and the protective strip 3 and mounting plug 5; and the back of the protective strip 3 can be cleaned to prevent dirt and residual adhesive from affecting the adhesive strength between the self-adhesive layer 7 and the protective strip 3.

[0042] During construction, the anti-adhesive layer 8 prevents the self-adhesive layer 7 from sticking to product packaging, dust, and other foreign objects during transportation. Workers first prepare the cable connector and then place the cold-shrink tubing 1 over the connector, removing the support strip 2. After completing the installation of the cold-shrink connector, workers peel the anti-adhesive layer 8 off the self-adhesive layer 7 and then adhere the self-adhesive layer 7 to the outer ring of the cold-shrink tubing 1, thus completing the installation of the protective strip 3 and the anti-bite cone 4. The presence of the cutting opening 6 guides the cutting tool, facilitating the cutting of the protective strip 3 and reducing blade deviation during cutting. The cut protective strip 3 can fit the reduced diameter of the cold-shrink tubing 1, preventing the protective strip 3 from being unable to install properly due to its width being greater than the reduced diameter of the cold-shrink tubing 1. The cut protective strip 3 and other protective strips 3 can still be glued together with the self-adhesive layer 7 onto other cold-shrink tubing 1, allowing for reuse and reducing waste.

[0043] The protective strip 3 is made of TPU material, which has good weather resistance and is flexible and elastic, and can adapt to the bending of the cold shrink tubing 1. The TPU material is also strong, tear-resistant, and wear-resistant, and can resist animal bites and scratches. Multiple anti-bite cones 4 are densely distributed on the surface of the protective strip 3. The anti-bite cones 4 have high hardness and raised shape, which can form a physical barrier or generate pain deterrence, significantly reducing the occurrence of climbing and biting. The anti-bite cones 4 can be removed from the mounting plug 5 by rotating, and can be replaced after a certain anti-bite cone 4 is damaged or worn, thus ensuring the protective effect.

[0044] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A cold shrink joint for an insulated tubular busbar comprising a cold shrink sleeve (1), characterised in that: The outer surface of the cold shrink tubing (1) is connected to a self-adhesive layer (7), and anti-adhesive layers (8) are provided on both sides of the back of the self-adhesive layer (7); a protective strip (3) is connected to the outer surface of the self-adhesive layer (7), and a cutting opening (6) is provided on the outer surface of the protective strip (3); an installation plug (5) is passed through the upper part of the outer surface of the protective strip (3), and an anti-bite cone (4) is passed through the outer surface of the installation plug (5).

2. The cold shrink joint for insulated tubular busbars according to claim 1, characterized in that: The cold shrink tubing (1) has a support strip (2) inside.

3. The cold shrink joint for insulated tubular busbars according to claim 1, characterized in that: The protective strip (3) is made of TPU material.

4. The cold shrink joint for insulated tubular busbars according to claim 1, characterized in that: The cut opening (6) has a "V" shaped cross section.

5. The cold shrink joint for insulated tubular busbars according to claim 3, characterized in that: The anti-bite cone (4) is detachably connected to the mounting plug (5) by means of threads, and the mounting plug (5) is fixedly connected to the protective strip (3) by polyurethane adhesive.

6. The cold shrink joint for insulated tubular busbars according to claim 5, characterized in that: Multiple anti-bite cones (4) and mounting plugs (5) are provided, and the multiple anti-bite cones (4) and mounting plugs (5) are distributed in a rectangular array.

7. The cold shrink joint for insulated tubular busbars according to claim 1, characterized in that: The self-adhesive layer (7) is made of UV-cured acrylic pressure-sensitive adhesive using a coating process, and the anti-adhesive layer (8) is made of PET release paper material.

8. The cold shrink joint for insulated tubular busbars according to claim 6, characterized in that: The anti-bite cone (4) and the mounting plug (5) are both made of PC material modified with UV stabilizer or 304 stainless steel material.

9. The cold shrink joint for insulated busbars according to claim 8, characterized in that: The tip of the anti-bite cone (4) is round or pointed.

Images