A multi-layer composite structure heat-insulating anticorrosive wear-resistant heat-shrinkable tube

Abstract

The utility model relates to heat shrink tube technical field especially a kind of multilayer composite structure's heat insulation anticorrosive wear-resistant heat shrink tube, including main pipe sleeve body, the inner wall surface of main pipe sleeve body is provided with anti-wear puncture inner sleeve, the outer wall surface of main pipe sleeve body is separately provided with first solid ring, second solid ring, intermediate solid ring, the outer portion of main pipe sleeve body is equipped with heat insulation sheath, first solid ring, second solid ring, intermediate solid ring are all set with viscose filling groove, viscose filling groove is provided with viscose body, the end face of heat insulation sheath away from main pipe sleeve body is provided with anticorrosive outer coating. The inner wall surface abrasion resistance of heat shrink tube for electrical cabinet body wire terminal is improved, avoid the more heat generated by electrical cabinet body electrical components long time use to cause PO polyolefin material main pipe sleeve body itself melt deformation condition, avoid these acidic gases directly adhering on the outer wall surface of main pipe sleeve body of heat shrink tube and cause corrosion condition.

Description

Technical Field

[0001] This utility model relates to the field of heat shrink tubing technology, and in particular to a multi-layer composite structure heat-insulating, corrosion-resistant, and wear-resistant heat shrink tubing. Background Technology

[0002] Heat shrink tubing is a type of plastic tubular material that shrinks when heated. It is widely used in electronics, electrical engineering, communications, automotive, aerospace and other fields. Among them, single-wall PO polyolefin heat shrink tubing is commonly used in electrical cabinets.

[0003] In practice, first select a PO polyolefin heat shrink tubing with a suitable inner diameter as the main tube, then place the main tube onto the terminals on the electrical cabinet wires. Next, use a heat gun to blow heat onto the main tube, causing it to shrink and completely insulate the terminals on the electrical cabinet wires.

[0004] Currently, the heat shrink tubing used for wiring terminals in existing electrical cabinets has uneven surfaces due to the use of copper as the wiring terminal material. These surfaces may contain microscopic spikes that are invisible to the naked eye. When the main sleeve is fitted onto the wiring terminal, these microscopic spikes can cause wear or even punctures on the inner wall of the PO polyolefin main sleeve, greatly reducing the wear and puncture resistance of the inner wall of the heat shrink tubing used for wiring terminals in electrical cabinets.

[0005] Furthermore, when the main pipe sleeve is fitted onto the terminal block and shrunk by a hot air blower, the electrical cabinet contains many electrical components. These components generate a lot of heat during long-term use. This heat can cause the PO polyolefin material main pipe sleeve to melt and deform, which in turn affects the insulation effect of the main pipe sleeve on the terminal block.

[0006] In addition, some electrical components made of plastic inside electrical cabinets need to be fixed with adhesives. These adhesives will produce acidic gases when they are in the high-temperature environment inside the cabinet for a long time. These acidic gases will adhere to the outer wall of the main sleeve of the heat shrink tubing and cause corrosion.

[0007] Therefore, we designed a heat shrink tubing to meet the needs of practical applications. Utility Model Content

[0008] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a multi-layer composite structure for heat insulation, corrosion resistance, and wear-resistant heat shrink tubing.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] Design a multi-layer composite structure heat-insulating, corrosion-resistant, and wear-resistant heat shrink tubing, including a main tube sleeve. The inner wall of the main tube sleeve is provided with a wear-resistant and puncture-resistant inner sleeve. The outer wall of the main tube sleeve is provided with a first fixed ring, a second fixed ring, and an intermediate fixed ring. The outside of the main tube sleeve is covered with a heat-insulating sleeve. Adhesive filling grooves are opened on the first fixed ring, the second fixed ring, and the intermediate fixed ring.

[0011] The adhesive filling groove is provided with an adhesive body, and the end face of the heat insulation sleeve away from the main tube sleeve is provided with an anti-corrosion outer coating.

[0012] The opening of the heat insulation sleeve is provided with a rounded corner, and a smooth coating is provided on the rounded corner.

[0013] In detail, the wear-resistant and puncture-resistant inner sleeve has an overall cylindrical structure and is made of FVMQ fluorosilicone elastic rubber.

[0014] In detail, the intermediate fixing ring is located at the center of the outer wall of the main tube sleeve, the first fixing ring is located on the right outer wall of the main tube sleeve, and the second fixing ring is located on the left outer wall of the main tube sleeve. The first fixing ring, the second fixing ring, and the intermediate fixing ring are all made of TPEE polyester elastomer material.

[0015] In detail, the heat insulation sleeve has an overall cylindrical structure and is made of TPU polyurethane material.

[0016] In detail, the adhesive filling groove is an arc-shaped groove structure with thirty-six grooves arranged in a circle, and the adhesive body is an organic silicone adhesive applied to each adhesive filling groove.

[0017] In detail, the anti-corrosion outer coating is uniformly applied along the outer wall of the heat insulation sleeve, and the anti-corrosion outer coating is a PVDF polyvinylidene fluoride coating.

[0018] In detail, the rounded corners are provided at the corner openings at both ends of the heat insulation sleeve, and the smooth coating is a PEEK polyether ether ketone coating.

[0019] The design scheme proposed in this utility model has the following beneficial effects in application:

[0020] 1. This utility model, by setting an anti-wear and puncture-resistant inner sleeve structure on the inner wall of the main tube sleeve, effectively avoids the wear or even puncture of the inner wall surface of the PO polyolefin material main tube sleeve caused by the micro-sharp protrusions on the upper surface of the terminal block when the main tube sleeve is fitted on the terminal block. This effectively improves the wear and puncture resistance of the inner wall surface of the heat shrink tubing used for the terminal block on the electrical cabinet wires.

[0021] 2. This utility model achieves a stable bond between the heat insulation sleeve and the main pipe sleeve by installing a heat insulation sleeve structure on the outside of the main pipe sleeve and setting three fixing rings with adhesive filling grooves. When the main pipe sleeve is fitted onto the terminal block and is shrunk by hot air, it effectively avoids the melting and deformation of the PO polyolefin main pipe sleeve itself caused by the excessive heat generated by the electrical components in the electrical cabinet during long-term use, thereby ensuring the insulation effect of the main pipe sleeve on the terminal block.

[0022] 3. Some electrical components made of plastic inside electrical cabinets require adhesives for fixing. These adhesives can generate acidic gases when exposed to the high temperature inside the cabinet for a long time. The anti-corrosion outer coating can prevent these acidic gases from directly adhering to the outer wall of the heat shrink tubing and causing corrosion. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of the heat insulation sleeve of this utility model in its unattached and glued state.

[0024] Figure 2 This is a three-dimensional schematic diagram of the heat insulation sleeve of this utility model in a fitted and adhered state.

[0025] Figure 3 For the present utility model Figure 1 A three-dimensional schematic diagram of the main tube sleeve with a wear-resistant and puncture-resistant inner sheath;

[0026] Figure 4 For the present utility model Figure 1 A three-dimensional schematic diagram of a heat-insulating sheath with an anti-corrosion outer coating;

[0027] Figure 5 For the present utility model Figure 2 YY cross-sectional view of the overall structure.

[0028] In the figure: 1. Abrasion-resistant and puncture-resistant inner sleeve; 2. Main tube sleeve; 3. First retaining ring; 4. Second retaining ring; 5. Intermediate retaining ring; 6. Heat insulation sleeve; 61. Rounded corner; 62. Smooth coating; 7. Anti-corrosion outer coating; 8. Adhesive filling groove; 81. Adhesive body. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0030] Reference Figures 1-5A multi-layer composite structure of heat-insulating, corrosion-resistant, and wear-resistant heat shrink tubing includes a main tube sleeve 2, an wear-resistant and puncture-resistant inner sleeve 1 on the inner wall of the main tube sleeve 2, a first fixed ring 3, a second fixed ring 4, and an intermediate fixed ring 5 respectively on the outer wall of the main tube sleeve 2, and a heat-insulating sheath 6 on the outside of the main tube sleeve 2. Adhesive filling grooves 8 are opened on the first fixed ring 3, the second fixed ring 4, and the intermediate fixed ring 5.

[0031] An adhesive body 81 is provided in the adhesive filling groove 8, and an anti-corrosion outer coating 7 is provided on the end face of the heat insulation sleeve 6 away from the main sleeve 2.

[0032] The opening of the heat insulation sleeve 6 is provided with a rounded corner 61, and a smooth coating 62 is provided on the rounded corner 61. The main sleeve 2 is a single-walled PO polyolefin heat shrink tubing, which is the existing technology.

[0033] It should be further noted that the wear-resistant and puncture-resistant inner sleeve 1 has an overall cylindrical structure. The wear-resistant and puncture-resistant inner sleeve 1 is made of FVMQ fluorosilicone elastic rubber, which is resistant to high temperature, has good flexibility and elasticity, and has excellent wear-resistant and puncture-resistant performance, without affecting the heat shrinking effect of the main tube sleeve 2.

[0034] It should be further noted that the intermediate retaining ring 5 is located at the center of the outer wall of the main pipe sleeve 2, the first retaining ring 3 is located on the right outer wall of the main pipe sleeve 2, and the second retaining ring 4 is located on the left outer wall of the main pipe sleeve 2. The first retaining ring 3, the second retaining ring 4, and the intermediate retaining ring 5 are all made of TPEE polyester elastomer material, which is resistant to high temperature and has good flexibility and elasticity. They are bonded to the main pipe sleeve 2 by organic silicone adhesive and do not affect the heat shrink effect of the main pipe sleeve 2.

[0035] It should be further noted that the heat insulation sleeve 6 has an overall cylindrical structure and is made of TPU polyurethane material, which is resistant to high temperature, has good flexibility and elasticity, and does not affect the heat shrink effect of the main sleeve 2.

[0036] It should be further explained that the adhesive filling groove 8 is an arc-shaped groove structure with thirty-six grooves arranged in a circle. The adhesive body 81 is an organic silicone adhesive and is applied to each adhesive filling groove 8. The organic silicone adhesive is resistant to high temperature, has good flexibility, and excellent insulation performance, and does not affect the heat shrink effect of the main tube sleeve 2.

[0037] It should be further noted that the anti-corrosion outer coating 7 is uniformly applied along the outer wall of the heat insulation sleeve 6. The anti-corrosion outer coating 7 is a PVDF polyvinylidene fluoride coating, which has excellent acid corrosion resistance, high temperature resistance, and does not affect the heat shrinkage effect of the main tube sleeve 2.

[0038] It should be further noted that the rounded corners 61 are provided at the corner openings at both ends of the heat insulation sleeve 6, and the smooth coating 62 is a PEEK polyether ether ketone coating, which has excellent mechanical strength, is oil-resistant, hydrolysis-resistant and has a smooth surface, which improves the smoothness of the heat insulation sleeve 6 being fitted onto the main pipe sleeve 2, is resistant to high temperature and does not affect the heat shrink effect of the main pipe sleeve 2.

[0039] Working principle: When the main sleeve 2 is fitted onto the terminal block, the wear-resistant and puncture-resistant inner sleeve 1 structure is set on the inner wall of the main sleeve 2, which effectively prevents the inner wall surface of the PO polyolefin material main sleeve 2 from being worn or even punctured by the micro-sharp protrusions on the upper surface of the terminal block. This effectively improves the wear-resistant and puncture-resistant properties of the inner wall surface of the heat shrink tubing used for the terminal block on the electrical cabinet wires.

[0040] Furthermore, after the main pipe sleeve 2 is fitted onto the terminal block and shrunk by a hot air blower, adhesive body 81 is applied to each adhesive filling groove 8, and then the heat insulation sleeve 6 is fitted onto the main pipe sleeve 2. The heat insulation sleeve 6 is firmly bonded to the main pipe sleeve 2 through the adhesive body 81. During use, due to the heat insulation effect of the heat insulation sleeve 6, it can effectively prevent the main pipe sleeve 2 made of PO polyolefin material from melting and deforming due to the large amount of heat generated by the electrical components in the electrical cabinet during long-term use, thereby ensuring the insulation effect of the main pipe sleeve 2 on the terminal block.

[0041] In addition, some electrical components made of plastic inside the electrical cabinet need to be fixed with adhesives. These adhesives will produce acidic gases when they are in the high temperature environment inside the cabinet for a long time. The anti-corrosion outer coating 7 can prevent these acidic gases from directly adhering to the outer wall of the main sleeve 2 of the heat shrink tubing and causing corrosion.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multi-layer composite structure heat-insulating, corrosion-resistant, and wear-resistant heat-shrink tubing, comprising a main pipe sleeve (2), characterized in that: The inner wall of the main tube sleeve (2) is provided with a wear-resistant and puncture-resistant inner sleeve (1), and the outer wall of the main tube sleeve (2) is provided with a first solid ring (3), a second solid ring (4) and an intermediate solid ring (5). The outer side of the main tube sleeve (2) is provided with a heat insulation sleeve (6). Adhesive filling grooves (8) are opened on the first solid ring (3), the second solid ring (4) and the intermediate solid ring (5). The adhesive filling groove (8) is provided with an adhesive body (81), and the heat insulation sleeve (6) is provided with an anti-corrosion outer coating (7) on the end face away from the main sleeve (2). The opening of the heat insulation sleeve (6) is provided with a rounded corner (61), and a smooth coating (62) is provided on the rounded corner (61).

2. The multi-layer composite structure heat-insulating, corrosion-resistant, and wear-resistant heat-shrink tubing according to claim 1, characterized in that: The wear-resistant and puncture-resistant inner sleeve (1) is a cylindrical structure and is made of FVMQ fluorosilicone elastic rubber.

3. The multi-layer composite structure heat-insulating, corrosion-resistant, and wear-resistant heat-shrink tubing according to claim 1, characterized in that: The intermediate fixing ring (5) is located at the center of the outer wall of the main tube sleeve (2), the first fixing ring (3) is located on the right outer wall of the main tube sleeve (2), and the second fixing ring (4) is located on the left outer wall of the main tube sleeve (2). The first fixing ring (3), the second fixing ring (4), and the intermediate fixing ring (5) are all made of TPEE polyester elastomer material.

4. The multi-layer composite structure heat-insulating, corrosion-resistant, and wear-resistant heat-shrink tubing according to claim 1, characterized in that: The heat insulation sleeve (6) is a cylindrical structure and is made of TPU polyurethane.

5. The multi-layer composite structure heat-insulating, corrosion-resistant, and wear-resistant heat-shrink tubing according to claim 1, characterized in that: The adhesive filling groove (8) is an arc-shaped groove structure with thirty-six grooves arranged in a circle. The adhesive body (81) is an organic silicone adhesive and is applied to each adhesive filling groove (8).

6. The multi-layer composite structure heat-insulating, corrosion-resistant, and wear-resistant heat-shrink tubing according to claim 1, characterized in that: The anti-corrosion outer coating (7) is uniformly applied along the outer wall of the heat insulation sleeve (6), and the anti-corrosion outer coating (7) is a PVDF polyvinylidene fluoride coating.

7. The multi-layer composite structure heat-insulating, corrosion-resistant, and wear-resistant heat-shrink tubing according to claim 1, characterized in that: The rounded corners (61) are provided at the corner openings at both ends of the heat insulation sleeve (6), and the smooth coating (62) is a PEEK polyether ether ketone coating.

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