Single-core indoor and outdoor cold shrinkage terminal

Abstract

The utility model relates to the technical field of cable installation and arrangement, and discloses a single-core indoor and outdoor cold shrinkage terminal head, which comprises an insulating tube, a supporting core rope is arranged in the middle of the insulating tube, a sealing ring is fixedly connected to the periphery of the insulating tube, a rubber sleeve is fixedly connected to the middle of the sealing ring, a sleeve is fixedly connected to the middle of the insulating tube, and the rubber sleeve is fixedly connected to the middle of the sleeve. A sealing film is fixedly connected to the middle of the sleeve, a sliding pipe is connected to the middle of the sleeve in a sliding mode, a clamping assembly is installed in the middle of the sleeve and comprises a supporting clamping ring, and the supporting clamping ring is fixedly connected to the middle of the sleeve. According to the utility model, firstly, the insulating tube is sleeved on the cable joint, and after the supporting core rope is pulled and drawn away, the rubber sleeve is pressed, so that the supporting ring is pushed, the sliding tube on the supporting ring can be inserted into the sleeve and the sealing film is punctured, and then the stability and the service life of the cold shrink terminal after installation are ensured under the filling and adhesion of glue.

Description

Technical Field

[0001] This utility model relates to the field of cable installation technology, and in particular to a single-core indoor / outdoor cold shrink terminal head. Background Technology

[0002] In outdoor environments, substations, underground cable systems, industrial facilities, and other locations, a large number of high-voltage cables are typically laid. In order to provide effective protection for the conductor joints of power cables and avoid the influence of the external environment on the cables, cold-shrink terminations are usually used to cover the cable joints to ensure the stable operation of the system.

[0003] Existing single-core indoor and outdoor cold shrink terminal heads typically employ cold shrink technology. By placing pre-made cold shrink material onto the cable joint, stretching and loosening the material, it automatically shrinks to form a tight and stable seal and protective layer. However, in actual use, over time, the elasticity of the cold shrink terminal head material weakens, making it unable to fit tightly against the cable joint and affecting the protective effect. Therefore, a single-core indoor and outdoor cold shrink terminal head is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a single-core indoor / outdoor cold shrink terminal head, which aims to improve the problem that in the prior art, the cold shrink terminal head cannot ensure a tight fit with the cable after long-term use.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A single-core indoor / outdoor cold shrink terminal head includes an insulating tube, a supporting core rope installed in the middle of the insulating tube, a sealing ring fixedly connected to the outer periphery of the insulating tube, a rubber sleeve fixedly connected to the middle of the sealing ring, a sleeve fixedly connected to the middle of the insulating tube, a sealing membrane fixedly connected to the middle of the sleeve, a sliding tube slidably connected to the middle of the sleeve, and a locking assembly installed in the middle of the sleeve.

[0007] The engaging assembly includes a support retaining ring, which is fixedly connected to the middle part of the sleeve, and a rubber retaining ring is fixedly connected to the outer periphery of the sliding tube;

[0008] As a further description of the above technical solution:

[0009] A sealing ring is fixedly connected to the outer periphery of the insulating tube;

[0010] As a further description of the above technical solution:

[0011] The inner wall of the insulating tube is provided with threaded grooves;

[0012] As a further description of the above technical solution:

[0013] The insulating tube has a through hole in the middle, and the sleeve is fixedly connected to the middle of the through hole;

[0014] As a further description of the above technical solution:

[0015] A support ring is fixedly connected to the outer periphery of the slide tube;

[0016] As a further description of the above technical solution:

[0017] A cavity is provided between the insulating tube and the rubber sleeve;

[0018] As a further description of the above technical solution:

[0019] The outer diameter of the support retaining ring is larger than the outer diameter of the rubber retaining ring.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the insulating tube is first put on the cable joint, the support core rope is pulled out, and the rubber sleeve is pressed to push the support ring, so that the sliding tube on the support ring can be inserted into the inside of the sleeve and the sealing film is punctured, so that the waterproof glue in the chamber can be inserted into the space between the insulating tube and the cable through the sliding tube and the sleeve. In this way, the stability and service life of the cold shrink terminal head are ensured after installation by the glue filling and bonding. Attached Figure Description

[0022] Figure 1 A three-dimensional schematic diagram of a single-core indoor / outdoor cold shrink terminal head proposed in this utility model;

[0023] Figure 2 This is a schematic diagram of the threaded groove structure of a single-core indoor / outdoor cold shrink terminal head proposed in this utility model;

[0024] Figure 3 This is a schematic diagram of the sliding tube structure of a single-core indoor / outdoor cold shrink terminal head proposed in this utility model;

[0025] Figure 4 This is a schematic diagram of the through hole structure of a single-core indoor / outdoor cold shrink terminal head proposed in this utility model.

[0026] Legend:

[0027] 1. Insulating tube; 2. Supporting core rope; 3. Rubber sleeve; 4. Sealing ring; 5. Sealing ring; 6. Chamber; 7. Threaded groove; 8. Sliding tube; 9. Supporting ring; 10. Sleeve; 11. Rubber retaining ring; 12. Supporting retaining ring; 13. Sealing membrane; 14. Through hole. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Reference Figures 1-4 This utility model provides an embodiment of a single-core indoor / outdoor cold shrink terminal head, comprising an insulating tube 1, a supporting core rope 2 installed in the middle of the insulating tube 1, a sealing ring 4 fixedly connected to the outer periphery of the insulating tube 1, a rubber sleeve 3 fixedly connected to the middle of the sealing ring 4, a sleeve 10 fixedly connected to the middle of the insulating tube 1, a sealing membrane 13 fixedly connected to the middle of the sleeve 10, a sliding tube 8 slidably connected to the middle of the sleeve 10, and a locking assembly installed in the middle of the sleeve 10, the locking assembly including a support clip. Ring 12 and support ring 12 are fixedly connected to the middle of sleeve 10. Rubber ring 11 is fixedly connected to the outer periphery of slide tube 8. Sealing ring 5 is fixedly connected to the outer periphery of insulating tube 1. Threaded groove 7 is opened on the inner wall of insulating tube 1. Through hole 14 is opened in the middle of insulating tube 1. Sleeve 10 is fixedly connected to the middle of through hole 14. Support ring 9 is fixedly connected to the outer periphery of slide tube 8. Chamber 6 is provided between insulating tube 1 and rubber sleeve 3. The outer diameter of support ring 12 is larger than the outer diameter of rubber ring 11. First, the insulating tube 1 is fitted onto the cable joint. After pulling away the support core rope 2, the insulating tube 1 can contract and fit against the cable. Simultaneously, the rubber sleeve 3 is pressed down, causing the inner wall of the rubber sleeve 3 to compress the support ring 9. This allows the sliding tube 8 in the middle of the support ring 9 to slide in the middle of the sleeve 10. The rubber retaining ring 11 on the outer periphery of the support ring 9 can be squeezed off the support retaining ring 12 and puncture the sealing film 13, thus connecting the space in the middle of the insulating tube 1 with the chamber 6. This allows the waterproof adhesive in the chamber 6 to flow into the insulating tube 1 and the cable through the sliding tube 8 and the sleeve 10. Between the cables, the adhesive fills and bonds the cold shrink terminal head, ensuring its stability and service life after installation. At the same time, the threaded groove 7 guides the waterproof adhesive to flow evenly between the insulating tube 1 and the cable. The sealing ring 5 further enhances the waterproofness of the cold shrink terminal head and prevents the waterproof adhesive from overflowing from the edge of the insulating tube 1. The upper and lower contacting support rings 12 and rubber rings 11 prevent the slide tube 8 from detaching from the middle of the sleeve 10 when the cold shrink terminal head is placed and stored. The support ring 9 prevents the bottom of the slide tube 8 from damaging the cable surface when pressed.

[0030] Working principle: First, the insulating tube 1 is placed on the cable joint. After pulling and removing the support core rope 2, the rubber sleeve 3 is pressed while the insulating tube 1 shrinks, thereby pushing the support ring 9. This allows the sliding tube 8 in the middle of the support ring 9 to be inserted into the inside of the sleeve 10 and puncture the sealing membrane 13. This allows the waterproof adhesive in the chamber 6 to flow between the insulating tube 1 and the cable through the sliding tube 8 and the sleeve 10. The adhesive fills and bonds the cable, ensuring the stability and service life of the cold shrink terminal after installation. At the same time, the threaded groove 7 guides the waterproof adhesive to flow evenly between the insulating tube 1 and the cable.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A single-core indoor / outdoor cold shrink terminal, comprising an insulating tube (1), characterized in that: A support core rope (2) is installed in the middle of the insulating tube (1), a sealing ring (4) is fixedly connected to the outer periphery of the insulating tube (1), a rubber sleeve (3) is fixedly connected in the middle of the sealing ring (4), a sleeve (10) is fixedly connected in the middle of the insulating tube (1), a sealing membrane (13) is fixedly connected in the middle of the sleeve (10), a sliding tube (8) is slidably connected in the middle of the sleeve (10), and a locking assembly is installed in the middle of the sleeve (10). The engaging assembly includes a support retaining ring (12), which is fixedly connected to the middle part of the sleeve (10), and a rubber retaining ring (11) is fixedly connected to the outer periphery of the slide tube (8).

2. The single-core indoor / outdoor cold shrink terminal head according to claim 1, characterized in that: A sealing ring (5) is fixedly connected to the outer periphery of the insulating tube (1).

3. A single-core indoor / outdoor cold shrink terminal head according to claim 1, characterized in that: The inner wall of the insulating tube (1) is provided with a threaded groove (7).

4. A single-core indoor / outdoor cold shrink terminal head according to claim 1, characterized in that: The insulating tube (1) has a through hole (14) in the middle, and the sleeve (10) is fixedly connected to the middle of the through hole (14).

5. A single-core indoor / outdoor cold shrink terminal head according to claim 1, characterized in that: A support ring (9) is fixedly connected to the outer periphery of the slide tube (8).

6. A single-core indoor / outdoor cold shrink terminal head according to claim 1, characterized in that: A chamber (6) is provided between the insulating tube (1) and the rubber sleeve (3).

7. A single-core indoor / outdoor cold shrink terminal head according to claim 1, characterized in that: The outer diameter of the support ring (12) is larger than the outer diameter of the rubber ring (11).

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