High-temperature-resistant electric hot melting sleeve

Abstract

The utility model provides a high temperature resistant electric hot melting sleeve, which comprises an electric hot melting sleeve main body, two ends of the electric hot melting sleeve main body are symmetrically connected with reinforcing strips, two sides of the outer surface of the electric hot melting sleeve main body are symmetrically connected with positioning rings, and the electric hot melting sleeve main body is composed of a hot melting layer, an electric hot melting net, a heat resistant layer and a heat insulation layer. The outer surface of the hot melting layer is fixedly connected with an electric hot melting net through a heat conduction layer, the outer surface of the electric hot melting net is fixedly connected with a heat-resisting layer, the end face of the electric hot melting net is fixedly connected with a copper wire, the outer surface of the heat-resisting layer is fixedly connected with a heat-insulating layer, and the outer surface of the heat-insulating layer is fixedly connected with a wear-resisting layer through a reinforcing layer. Through cooperation of the heat conduction layer, the heat-resisting layer and the heat insulation layer, the electric hot melting sleeve body has a good high-temperature-resisting structure, then the fault tolerance rate during operation can be effectively improved, and the probability that the electric hot melting sleeve body is damaged is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electric heat-melting sleeves, in particular to a high-temperature resistant electric heat-melting sleeve. Background Art

[0002] The electric heat-melting sleeve utilizes the hot-melt principle of polyethylene to pre-bury the electric heating wire in the inner surface of the edge of the polyethylene plate. The electric heating wire is evenly arranged and generates high heat per unit time. It can be perfectly integrated with the PE pipeline, with obvious sealing effect and good welding effect. However, the existing electric heat-melting sleeve has weak pressure resistance. After being buried underground, it is easy to crack and be damaged due to long-term pressure, resulting in poor sealing between pipelines and causing pipeline leakage and other problems.

[0003] After searching, the prior art disclosed a pressure-resistant electric hot melt sleeve (Announcement No. CN207421614U), which records "including a polyethylene layer, a reinforcing mesh layer, a connector, a rubber layer and a protective layer, the reinforcing mesh layer is arranged on the outer surface of the polyethylene layer, the rubber layer is arranged on the outer surface of the reinforcing mesh layer, the connector is arranged between the reinforcing mesh layer and the rubber layer, the connector includes a first connecting part, a second connecting part and a third connecting part, one end of the first connecting part is connected to the reinforcing mesh layer, and the other end is respectively connected to the second connecting part and the third connecting part, the second and third connecting parts are arranged in the rubber layer, the rubber layer has a groove part, the groove part is arranged around the outer surface of the rubber layer, the protective layer has a protrusion, and the protrusion is stuck in the groove part"; the electric hot melt sleeve can It can effectively improve the compressive resistance of the electric hot melt sleeve, thereby avoiding its cracking under pressure, and can also enhance the connection firmness between the layers of the electric hot melt sleeve, avoid separation between different material layers, and enhance the thermal insulation performance of the electric hot melt sleeve. However, the electric hot melt sleeve needs to pay attention to controlling the time and temperature during actual heating. Generally, the heating time is about 10-20 seconds, and the heating temperature is between 200-300 degrees. Workers cannot accurately grasp the heating time during operation, which makes the heating temperature appear high. However, the electric hot melt sleeve does not have a high temperature resistant structure, and then the electric hot melt sleeve is damaged due to excessive temperature, which is not conducive to the connection of the pipeline. In addition, when the common electric hot melt mesh in the electric hot melt sleeve is heated, the inside of the electric hot melt sleeve is prone to uneven heating. Utility Model Content

[0004] In order to overcome the defects of the prior art, a high temperature resistant electric heat-melting sleeve is provided to solve the problems raised in the above background technology.

[0005] To achieve the above object, a high-temperature resistant electric heating fusion sleeve is provided, including: an electric heating fusion sleeve main body, reinforcing strips are symmetrically connected to both ends of the electric heating fusion sleeve main body, positioning rings are symmetrically connected to both sides of the outer surface of the electric heating fusion sleeve main body, and the electric heating fusion sleeve main body is composed of a heat-melting layer, an electric heating fusion mesh, a heat-resistant layer and a heat-insulating layer. The outer surface of the heat-melting layer is fixedly connected to the electric heating fusion mesh through a heat-conducting layer. The outer surface of the electric heating fusion mesh is fixedly connected to the heat-resistant layer. The end face of the electric heating fusion mesh is fixedly connected to a copper wire. At the same time, the outer surface of the heat-resistant layer is fixedly connected to the heat-insulating layer, and the outer surface of the heat-insulating layer is fixedly connected to the wear-resistant layer through a strengthening layer.

[0006] Preferably, the electric heating fusion sleeve main body is integrally in a cylindrical structure, and the two groups of reinforcing strips fixedly connected to both ends of the electric heating fusion sleeve main body are both in a C-shaped structure. At the same time, through holes are correspondingly opened on the surface of the reinforcing strip at positions corresponding to the copper wire.

[0007] Preferably, multiple groups of positioning rings are fixedly connected to both sides of the outer surface of the electric heating fusion sleeve main body respectively in parallel and at equal intervals, and the multiple groups of positioning rings are all in a 冂-shaped structure.

[0008] Preferably, the heat-conducting layer fixedly connected to the outer surface of the heat-melting layer is made of aluminum alloy material, and the electric heating fusion mesh fixedly connected to the outer surface of the heat-conducting layer is in a mesh structure.

[0009] Preferably, the heat-resistant layer is made of polyimide material. The electric heating fusion mesh is fixedly connected to the inner surface of the heat-resistant layer, and the heat-conducting layer is fixedly connected to the inner surface of the heat-resistant layer through the holes of the electric heating fusion mesh.

[0010] Preferably, the heat-insulating layer is made of aerogel material. The fitting grooves opened on the outer surface of the heat-insulating layer are in a mesh structure, and the strengthening layer is composed of polyester fibers in a mesh structure. At the same time, the structural distribution of the strengthening layer and the structural distribution of the fitting grooves correspond one by one.

[0011] Preferably, the inner surface of the wear-resistant layer is fixedly connected to the strengthening layer and the heat-insulating layer respectively, and multiple groups of wear-resistant blocks are evenly fixedly connected to the outer surface of the wear-resistant layer. The wear-resistant blocks are in a frustum-shaped structure, and the wear-resistant layer and the wear-resistant blocks are integrally formed.

[0012] Compared with the prior art, the beneficial effects of the present utility model are: through the cooperation of the heat-resistant layer and the heat-insulating layer, the electric heating fusion sleeve main body has good heat preservation and high-temperature resistance effects, can effectively improve the error tolerance rate of the electric heating fusion sleeve main body in the actual operation process, reduce the probability of accidental damage of the electric heating fusion sleeve main body due to short-term high temperature, enhance the practicability and safety of the electric heating fusion sleeve main body. At the same time, through the cooperation of the heat-conducting layer and the electric heating fusion mesh, the heat-melting layer can be evenly heated, thereby improving the fixing effect and connection quality of the electric heating fusion sleeve main body to the pipeline, and through the cooperation of the strengthening layer, the wear-resistant layer and the wear-resistant blocks, the wear-resistant effect of the outer surface of the electric heating fusion sleeve main body and the overall structural strength can be enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a partial structural schematic diagram of the appearance of an embodiment of the utility model.

[0014] Figure 2 It is a top view schematic diagram of an embodiment of the utility model.

[0015] Figure 3 The figure is a schematic diagram of the internal structure of the electric hot melt sleeve body according to an embodiment of the utility model.

[0016] Figure 4 For the utility model embodiment Figure 2 An enlarged schematic diagram of point A.

[0017] In the figure: 1. Electric hot melt sleeve body; 2. Positioning ring; 3. Reinforcement strip; 4. Copper wire; 5. Wear-resistant block; 6. Hot melt layer; 7. Heat conductive layer; 8. Electric hot melt mesh; 9. Heat-resistant layer; 10. Heat insulation layer; 11. Reinforcement layer; 12. Wear-resistant layer. DETAILED DESCRIPTION

[0018] Reference Figures 1 to 4 As shown, the utility model provides a high-temperature resistant electric hot melt sleeve, comprising: an electric hot melt sleeve body 1, wherein the two ends of the electric hot melt sleeve body 1 are symmetrically connected to reinforcement strips 3, and the two sides of the outer surface of the electric hot melt sleeve body 1 are symmetrically connected to positioning rings 2, and the electric hot melt sleeve body 1 is composed of a hot melt layer 6, an electric hot melt mesh 8, a heat-resistant layer 9 and a heat-insulating layer 10, and the outer surface of the hot melt layer 6 is fixedly connected to the electric hot melt mesh 8 through a heat-conducting layer 7, the outer surface of the electric hot melt mesh 8 is fixedly connected to the heat-resistant layer 9, the end surface of the electric hot melt mesh 8 is fixedly connected to the copper wire 4, and at the same time, the outer surface of the heat-resistant layer 9 is fixedly connected to the heat-insulating layer 10, and the outer surface of the heat-insulating layer 10 is fixedly connected to the wear-resistant layer 12 through a reinforcing layer 11.

[0019] In this embodiment, when the pipe connection end needs to be fixed, the electric hot melt sleeve body 1 is first installed in a suitable position, and the high temperature resistant fixing rope is passed through the positioning ring 2 in sequence, so as to complete the fixing of the electric hot melt sleeve body 1 and ensure the fixing effect of the electric hot melt sleeve body 1 on the pipe. Then, the copper wire 4 is energized so that the electric hot melt mesh 8 can heat the heat conductive layer 7, and the heat conductive layer 7 can evenly transfer the heat to the hot melt layer 6, so that the hot melt layer 6 can evenly melt, thereby improving the fixing quality between the electric hot melt sleeve body 1 and the pipe. When workers make mistakes in operation and the power-on time of the copper wire 4 is prolonged, the heating temperature of the electric hot melt mesh 8 will be too high. The setting of the heat-resistant layer 9 can not only improve the high-temperature resistance of the outer surface structure of the electric hot melt mesh 8, but also effectively reduce the heat transfer efficiency, thereby preventing the high heat of the electric hot melt mesh 8 from directly damaging the outer surface of the electric hot melt sleeve body 1. In addition, the setting of the heat insulation layer 10 can further reduce the heat transfer efficiency, thereby ensuring the integrity of the outer surface of the electric hot melt sleeve body 1 and its safety during use, and reducing the probability of safety accidents among workers.

[0020] As a preferred embodiment, the electrothermal fusion sleeve body 1 is integrally in a cylindrical structure, and the two groups of reinforcing strips 3 fixedly connected to both ends of the electrothermal fusion sleeve body 1 are both in a C-shaped structure. At the same time, through holes are correspondingly formed on the surface of the reinforcing strip 3 at positions opposite to the copper wires 4.

[0021] In this embodiment, as shown in Figure 1 and Figure 2 , the arrangement of the reinforcing strip 3 can perform corresponding shaping on the electrothermal fusion sleeve body 1, and can assist in enhancing the fixing effect of the positioning ring 2 on both ends of the electrothermal fusion sleeve body 1.

[0022] As a preferred embodiment, multiple groups of positioning rings 2 are fixedly connected to both sides of the outer surface of the electrothermal fusion sleeve body 1 in parallel and at equal intervals, and the multiple groups of positioning rings 2 are all in a 冂-shaped structure.

[0023] In this embodiment, as shown in Figure 1 and Figure 2 , the arrangement of the positioning ring 2 enables both ends of the electrothermal fusion sleeve body 1 to be precisely abutted together, and then can assist in enhancing the fixing effect between the electrothermal fusion sleeve body 1 and the pipe connection end.

[0024] As a preferred embodiment, the heat-conducting layer 7 fixedly connected to the outer surface of the hot-melt layer 6 is made of aluminum alloy material, and the electrothermal fusion mesh 8 fixedly connected to the outer surface of the heat-conducting layer 7 is in a mesh structure.

[0025] In this embodiment, as shown in Figure 3 , the arrangement of the heat-conducting layer 7 enables the heat generated by the mesh-shaped electrothermal fusion mesh 8 to be evenly transmitted into the hot-melt layer 6, ensuring that the hot-melt layer 6 can be evenly melted, improving the quality of the fixed connection between the electrothermal fusion sleeve body 1 and the pipe, and at the same time can also reduce the material consumption of the electrothermal fusion mesh 8.

[0026] As a preferred embodiment, the heat-resistant layer 9 is made of polyimide material, the electrothermal fusion mesh 8 is fixedly connected to the inner surface of the heat-resistant layer 9, and the heat-conducting layer 7 is fixedly connected to the inner surface of the heat-resistant layer 9 through the holes of the electrothermal fusion mesh 8.

[0027] In this embodiment, as shown in Figure 3 , the polyimide-based heat-resistant layer 9 can withstand high temperatures above 400°C, and the long-term use temperature range is -200 to 300°C, with high insulation performance and low heat transfer efficiency. Therefore, it can effectively reduce the probability that the electrothermal fusion mesh 8 burns through the outer surface of the electrothermal fusion sleeve body 1 due to short-term excessive temperature.

[0028] As a preferred embodiment, the heat-insulating layer 10 is made of aerogel material, the fitting grooves formed on the outer surface of the heat-insulating layer 10 are in a mesh structure, and the reinforcing layer 11 is composed of polyester fibers to form a mesh structure. At the same time, the structural distribution of the reinforcing layer 11 corresponds one-to-one with the structural distribution of the fitting grooves.

[0029] In this embodiment, if Figure 3 The aerogel insulation layer 10 can not only enhance the thermal insulation effect of the electric hot melt sleeve body 1, but also enhance the impact resistance of the outer surface of the electric hot melt sleeve body 1. The setting of the reinforcement layer 11 can also assist in enhancing the structural strength of the outer surface of the electric hot melt sleeve body 1.

[0030] As a preferred embodiment, the inner surfaces of the wear-resistant layer 12 are fixedly connected to the reinforcing layer 11 and the thermal insulation layer 10 respectively, and the outer surface of the wear-resistant layer 12 is evenly fixedly connected to multiple groups of wear-resistant blocks 5, and the wear-resistant blocks 5 are in a prism-shaped structure, and the wear-resistant layer 12 and the wear-resistant blocks 5 are integrally formed.

[0031] In this embodiment, if Figure 2 , Figure 3 and Figure 4 The arrangement of the wear-resistant layer 12 and the wear-resistant block 5 can effectively enhance the wear-resistant effect of the outer surface of the electric hot melt sleeve body 1 and reduce the probability of damage to the outer surface of the electric hot melt sleeve body 1 due to wear.

[0032] The high temperature resistant electric hot melt sleeve of the utility model has a good high temperature resistant structure through the cooperation of the heat conductive layer 7, the heat resistant layer 9 and the heat insulating layer 10, which can effectively improve the fault tolerance during operation and reduce the probability of damage to the electric hot melt sleeve body 1, so that workers can have sufficient reaction time during operation, thereby helping to improve the efficiency of pipeline fixed connection.

Claims

1. A high temperature resistant electric hot melt sleeve, comprising: The electric hot melt sleeve body (1) is characterized in that: the two ends of the electric hot melt sleeve body (1) are symmetrically connected to the reinforcement strips (3), and the two sides of the outer surface of the electric hot melt sleeve body (1) are symmetrically connected to the positioning rings (2), and the electric hot melt sleeve body (1) is composed of a hot melt layer (6), an electric hot melt mesh (8), a heat-resistant layer (9) and a heat insulation layer (10), and the outer surface of the hot melt layer (6) is fixedly connected to the electric hot melt mesh (8) through a heat conductive layer (7), the outer surface of the electric hot melt mesh (8) is fixedly connected to the heat-resistant layer (9), the end surface of the electric hot melt mesh (8) is fixedly connected to the copper wire (4), and at the same time, the outer surface of the heat-resistant layer (9) is fixedly connected to the heat insulation layer (10), and the outer surface of the heat insulation layer (10) is fixedly connected to the wear-resistant layer (12) through a reinforcement layer (11).

2. A high temperature resistant electric hot melt sleeve according to claim 1, characterized in that: The electric hot melt sleeve body (1) is an overall cylindrical structure, and the two groups of reinforcement strips (3) fixedly connected at both ends of the electric hot melt sleeve body (1) are both C-shaped structures, and through holes are provided on the surfaces of the reinforcement strips (3) corresponding to the positions of the copper wires (4).

3. The high temperature resistant electric heat-melting sleeve according to claim 1, characterized in that: Multiple sets of positioning rings (2) are fixedly connected in parallel and at equal intervals on both sides of the outer surface of the electric hot melt sleeve body (1), and the multiple sets of positioning rings (2) are all in a convex shape.

4. The high temperature resistant electric heat-melting sleeve according to claim 1, characterized in that: The heat-conducting layer (7) fixedly connected to the outer surface of the hot-melt layer (6) is made of aluminum alloy, and the electric hot-melt mesh (8) fixedly connected to the outer surface of the heat-conducting layer (7) has a mesh structure.

5. The high temperature resistant electric heat-melting sleeve according to claim 1, characterized in that: The heat-resistant layer (9) is made of polyimide material, the inner surface of the heat-resistant layer (9) is fixedly connected to the electric hot melt mesh (8), and the inner surface of the heat-resistant layer (9) is fixedly connected to the heat-conducting layer (7) through the holes of the electric hot melt mesh (8).

6. The high temperature resistant electric heat-melting sleeve according to claim 1, characterized in that: The heat insulating layer (10) is made of aerogel material, and the engaging grooves provided on the outer surface of the heat insulating layer (10) are in a mesh structure, and the reinforcing layer (11) is in a mesh structure formed of polyester fibers, and the structural distribution of the reinforcing layer (11) corresponds one to one with the structural distribution of the engaging grooves.

7. The high temperature resistant electric heat-melting sleeve according to claim 1, characterized in that: The inner surface of the wear-resistant layer (12) is fixedly connected to the reinforcing layer (11) and the heat-insulating layer (10), respectively, and the outer surface of the wear-resistant layer (12) is evenly fixedly connected to multiple groups of wear-resistant blocks (5), and the wear-resistant blocks (5) are in a prism-shaped structure. At the same time, the wear-resistant layer (12) and the wear-resistant blocks (5) are integrally formed.

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