Thermal shrinkage sealing device

Abstract

The utility model relates to the technical field of sealing devices, in particular to a thermal shrinkage sealing device. According to the technical scheme, the silica gel stress tube comprises a silica gel stress tube and further comprises an integral insulating tube, the integral insulating tube is sleeved on the silica gel stress tube, an insulating tube is sleeved on the integral insulating tube, an outer conductive tube is sleeved on the insulating tube, and an outer layer, a middle layer and an inner layer are arranged in the integral insulating tube. A guide mechanism for assisting air flow to be discharged during heating is arranged in the integral insulating tube, the guide mechanism comprises anti-skid pads which are fixedly mounted in the inner layer at equal intervals, and a plurality of convex blocks are fixedly mounted on the anti-skid pads. According to the utility model, the discharge of air when the integral insulation tube is heated and shrunk is promoted, the bulge is avoided, and the sealing performance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sealing device technical field especially relates to a heat shrinkage sealing device. BACKGROUND

[0002] Heat shrinkage technology is a kind of technology that utilizes the heat shrinkage characteristics of high polymer materials to realize sealing and insulation. With the continuous progress of high polymer material science, the performance of heat shrinkage materials has been significantly improved, such as good insulation performance, corrosion resistance, waterproofness, flame resistance, etc. The application of heat shrinkage technology in the field of power cable accessories provides a new solution to solve the shortcomings of traditional intermediate joints.

[0003] When using heat shrinkage technology to connect and seal the cable, a heat shrink tube is often used. The principle is that the material will shrink when heated, making it tightly attached to the cable. However, during the heating process, if the heating is uneven, the heat shrink tube may not shrink uniformly, and the internal air may not be able to be discharged in time, causing bulging and affecting the sealing performance. Therefore, the present application proposes a heat shrinkage sealing device. SUMMARY

[0004] The utility model aims at the problem of uneven shrinkage of heat shrink tube in the background art causing bulging, and proposes a heat shrinkage sealing device.

[0005] The technical scheme of the utility model is a heat shrinkage sealing device, which comprises a silica gel stress tube and further comprises:

[0006] A monolithic insulating tube is provided on the silica gel stress tube, an insulating tube is provided on the monolithic insulating tube, an outer conductive tube is provided on the insulating tube, an outer layer, an intermediate layer and an inner layer are provided in the monolithic insulating tube, and a guide mechanism for assisting air discharge during heating is provided in the monolithic insulating tube.

[0007] Optionally, the guide mechanism comprises anti-slip pads fixedly installed at equal distances in the inner layer, a plurality of protrusions are fixedly installed on the anti-slip pads, a plurality of grooves arranged at equal distances in the circumferences are formed in the inner layer, and the grooves are located between adjacent two anti-slip pads.

[0008] Optionally, the material of the outer layer is polytetrafluoroethylene, and the thickness of the outer layer is 2-3 mm.

[0009] Optionally, the material of the intermediate layer is ceramic fiber material, and the thickness of the intermediate layer is 2-3 mm.

[0010] Optionally, the material of the inner layer is rubber material, and the thickness of the inner layer is 2-3 mm.

[0011] Optionally, an anti-slip block is fixedly installed on the monolithic insulating tube, and an anti-slip pattern is provided on the anti-slip block 2.

[0012] Optionally, the protruding block is arc-shaped, and the thickness of the protruding block is 1-2mm.

[0013] In summary, the present application includes at least one of the following beneficial technical effects:

[0014] 1. By setting the groove on the inner layer, the contact time of the groove and the silica gel stress tube is prolonged when the integral insulation tube is heated and shrunk, so that the air can be discharged outward at the groove, avoiding the air discharge not clean causing the bulge, and improving the sealing performance.

[0015] 2. The anti-skid block provided on the outer layer provides friction, facilitating the installation of workers, and the anti-skid pad provided on the inner layer avoids the sliding of the silica gel stress tube.

[0016] The present application realizes the promotion of the air discharge of the integral insulation tube when heated and shrunk, avoids the bulge, and improves the sealing performance. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The structure schematic diagram of the silica gel stress tube, the integral insulation tube and the outer conductive tube of one embodiment of the present application is given;

[0018] Figure 2 The cross-sectional structure schematic diagram of the integral insulation tube of one embodiment of the present application is given;

[0019] Figure 3 The cross-sectional structure schematic diagram of the inner layer of one embodiment of the present application is given.

[0020] The reference signs are as follows: 1, outer layer; 2, anti-skid block; 3, middle layer; 4, inner layer; 5, anti-skid pad; 6, protruding block; 7, groove; 8, integral insulation tube; 9, silica gel stress tube; 10, outer conductive tube; 11, insulation tube. DETAILED DESCRIPTION

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

[0022] The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application.

[0023] Based on the embodiments in the present application, all other embodiments obtained by the ordinary skilled in the art without making creative efforts belong to the scope of protection of the present application.

[0024] In the description of the utility model, it is explained that, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0025] It should be noted that the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. In this specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0026] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0027] Embodiment

[0028] As Figure 1 shown, the utility model provides a kind of heat shrinkage sealing device, including silica gel stress pipe 9, still including integral type insulating tube 8, integral type insulating tube 8 is sleeved on silica gel stress pipe 9, integral type insulating tube 8 is sleeved with insulating tube 11, insulating tube 11 is sleeved with outer conductive tube 10, outer layer 1, middle layer 3 and inner layer 4 are provided in integral type insulating tube 8, guiding mechanism for assisting airflow discharge when heating is provided in integral type insulating tube 8.

[0029] As Figures 2-3As shown, the embodiment also includes a guide mechanism, which includes anti-skid pads 5 fixedly installed at equal distances in the inner layer 4 to avoid the silicone stress tube 9 from sliding on the anti-skid pads 5, a plurality of protrusions 6 are fixedly installed on the anti-skid pads 5, a plurality of recesses 7 arranged at equal distances in a circle are formed in the inner layer 4, the recesses 7 are located between two adjacent anti-skid pads 5, when the integral insulation tube 11 starts to shrink when heated, due to the recesses 7 on the inner layer 4 having a certain depth, the speed of the recesses 7 contacting the silicone stress tube 9 is less than other parts when the inner layer 4 shrinks, so that air can be discharged outward from the recesses 7, avoiding the air inside the integral insulation tube 11 from being discharged and causing bulging due to the non-sticky glue when the integral insulation tube 11 shrinks.

[0030] As Figures 2-3 shown, the outer layer 1 is made of polytetrafluoroethylene, has good wear resistance, corrosion resistance and ultraviolet resistance, protects the various layers of the heat shrink tube, has excellent weather resistance and chemical stability, can effectively resist the erosion of external factors such as ultraviolet rays, rainwater and dust, the thickness of the outer layer 1 is 2-3mm, the material of the middle layer 3 is ceramic fiber material, has high mechanical strength and heat resistance, to enhance the overall performance of the heat shrink tube, can improve the electromagnetic shielding performance of the heat shrink tube, the thickness of the middle layer 3 is 2-3mm, the material of the inner layer 4 is rubber, can tightly wrap the wire and cable after heating and shrinking, provides reliable sealing protection, the thickness of the inner layer 4 is 2-3mm.

[0031] As Figures 2-3 shown, the integral insulation tube 8 is fixedly installed with anti-skid blocks 2, the anti-skid blocks 2 are provided with anti-skid patterns to provide friction and facilitate installation, the protrusions 6 are arc-shaped, and the thickness of the protrusions 6 is 1-2mm.

[0032] Working principle: the cable is stripped and cut, the silicone stress tube 9 is sleeved, the silicone stress tube 9 is inserted into the integral insulation tube 8 and heated, when the integral insulation tube 11 starts to shrink when heated, due to the recesses 7 on the inner layer 4 having a certain depth, the speed of the recesses 7 contacting the silicone stress tube 9 is less than other parts when the inner layer 4 shrinks, so that air can be discharged outward from the recesses 7, avoiding the air inside the integral insulation tube 11 from being discharged and causing bulging due to the non-sticky glue when the integral insulation tube 11 shrinks, achieving the air discharge when the integral insulation tube shrinks, avoiding bulging and improving the sealing performance.

[0033] The above specific embodiments are only several optional embodiments of the present application, based on the technical scheme of the present application and the related inspiration of the above embodiments, those skilled in the art can make various alternative improvements and combinations on the above specific embodiments.

Claims

1. A heat-shrink sealing device, comprising a silicone stress tube (9), characterized in that, Also includes: An integral insulating tube (8) is sleeved on a silicone stress tube (9). An insulating tube (11) is sleeved on the integral insulating tube (8). An outer conductive tube (10) is sleeved on the insulating tube (11). An outer layer (1), a middle layer (3), and an inner layer (4) are provided inside the integral insulating tube (8). A guide mechanism for auxiliary airflow discharge during heating is provided inside the integral insulating tube (8).

2. The heat-shrink sealing device according to claim 1, characterized in that, The guiding mechanism includes anti-slip pads (5) that are fixedly installed at equal intervals in the inner layer (4). Multiple protrusions (6) are fixedly installed on the anti-slip pads (5). Multiple grooves (7) arranged in a circular pattern at equal intervals are opened in the inner layer (4). The grooves (7) are located between two adjacent anti-slip pads (5).

3. The heat-shrink sealing device according to claim 1, characterized in that, The outer layer (1) is made of polytetrafluoroethylene and has a thickness of 2-3 mm.

4. The heat-shrink sealing device according to claim 1, characterized in that, The intermediate layer (3) is made of ceramic fiber material and has a thickness of 2-3 mm.

5. A heat-shrink sealing device according to claim 1, characterized in that, The inner layer (4) is made of rubber and has a thickness of 2-3 mm.

6. A heat-shrink sealing device according to claim 1, characterized in that, An anti-slip block (2) is fixedly installed on the integral insulating tube (8), and the anti-slip block (2) is provided with anti-slip texture.

7. A heat-shrink sealing device according to claim 2, characterized in that, The protrusion (6) is arc-shaped and has a thickness of 1-2 mm.

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