Cold contraction type cable outdoor terminal

Abstract

The utility model relates to a cold shrink type cable outdoor terminal in the outdoor terminal field, comprising an insulation tube and a stress cone arranged in the insulation tube, the insulation tube is a hollow tube body structure, a sleeve joint hole is arranged in the insulation tube, a support tube which can be pulled out and detached is sleeved in the sleeve joint hole, an umbrella skirt is arranged on the outer surface of the insulation tube, and the stress cone is arranged in the insulation tube. Protruding reinforcing ribs are formed on the outer surface of the insulating tube, one end of the insulating tube is provided with a connecting end used for being connected with an external terminal, the other end of the insulating tube is provided with an installing end used for being connected with a cable, a sealing protrusion is formed on the outer surface of the connecting end, and a reinforcing protrusion is formed on the outer surface of the installing end. According to the utility model, the raised reinforcing ribs on the outer surface of the insulating tube can enhance the strength of the insulating tube, improve the effect of resisting external force and extrusion, further enhance the stability and reliability of the overall structure of the insulating tube, the sealing protrusions and the reinforcing protrusions, enhance the sealing performance when the insulating tube is connected with the outside, and ensure the stability and safety of connection; and the practicability is improved.

Description

Technical Field

[0001] The utility model relates to the field of outdoor terminals, in particular to the field of cable connections, and specifically to a cold-shrinkable cable outdoor terminal. Background Art

[0002] As the demand for new energy and electricity gradually increases, and wind power generation and photovoltaic power generation are deployed in areas with high altitudes and abundant land resources, the technical requirements for outdoor terminals of power cables will become very important.

[0003] Cable outdoor terminals are essential components in fields such as power, communications, transportation, and construction. Their performance is directly linked to the safe and stable operation of the entire system. In power systems, cable outdoor terminals are widely used at the terminal connections of high-voltage, medium-voltage, and low-voltage cables. They fulfill the crucial role of protecting cable terminals, improving insulation performance, and ensuring safe power transmission. Furthermore, in communications networks, cable outdoor terminals are used to connect optical and electrical cables, ensuring the stable transmission of communication signals. Furthermore, transportation facilities such as traffic lights, streetlights, subways, and railways, as well as the electrical systems of buildings, all rely on cable outdoor terminals.

[0004] However, although the existing cable outdoor terminals have met the use requirements to a certain extent, their structures still have the following major defects. Among them, the stability of the installation connection structure of some existing cable outdoor terminals when connecting cables is poor, resulting in insufficient installation insulation strength and easy loosening after long-term use, which makes it difficult to meet the requirements and increases the operation risk of the cable system. The cable outdoor terminals cannot effectively prevent and isolate the intrusion of external pollutants such as moisture and dust, resulting in a decrease in the internal insulation performance of the cable and even causing failures, thereby affecting use. Utility Model Content

[0005] The purpose of the present utility model is to solve the above defects and provide a cold shrink type cable outdoor terminal to solve the technical problems of insufficient structural connection strength of the outdoor terminal in the above background technology, affecting the stability of the connection, and poor sealing effect, which leads to external foreign matter easily contaminating and invading the outdoor terminal, thereby affecting stable and safe use.

[0006] The purpose of this utility model is achieved by the following methods:

[0007] A cold-shrink cable outdoor terminal includes an insulating tube and a stress cone arranged in the insulating tube. The insulating tube is a hollow tube structure. A sleeve hole is provided inside the insulating tube. The stress cone is installed in the sleeve hole in pairs. A detachable support tube is sleeved in the sleeve hole. The outer surface of the insulating tube is provided with an umbrella skirt. The upper surface of the umbrella skirt is inclined and forms an inclined angle with the outer surface of the insulating tube. The outer surface of the insulating tube is formed with raised reinforcement ribs, and the reinforcement ribs are correspondingly distributed between the two umbrella skirts. One end of the insulating tube is provided with a connecting end for connecting an external terminal, and the other end of the insulating tube is provided with an installation end for connecting a cable. A sealing protrusion is formed on the outer surface of the connecting end, and the sealing protrusion is distributed around the outer surface of the connecting end. A reinforcement protrusion is formed on the outer surface of the installation end, and the reinforcement protrusion is distributed around the outer surface of the installation end.

[0008] Further in the above description, a mounting groove for embedding the stress cone is formed inside the sleeve hole near the mounting end, the stress cone is embedded in the mounting groove, and a conductive through hole is opened inside the stress cone, and the inner diameter of the through hole is matched with the inner diameter of the sleeve hole.

[0009] The matching setting of through holes and socket holes makes it easy to connect cables.

[0010] Further in the above description, nine sheds are provided, and the nine sheds are axially spaced and distributed along the outer surface of the insulating tube.

[0011] Further to the above description, the reinforcing ribs are distributed around the outer surface of the insulating tube. There are eight reinforcing ribs, spaced axially along the outer surface of the insulating tube, and each rib is positioned between two corresponding sheds. The provision of the reinforcing ribs improves the stability and reliability of the insulating tube connection. When the socket hole is expanded and connected, the reinforcing ribs enhance the tensioning and sealing effect, improving the sealing and secureness of the connection.

[0012] Further in the above description, the sealing protrusion is formed on the outer surface of the connecting end, and there are three sealing protrusions, which are evenly spaced along the axial direction of the connecting end. A first sealing groove is opened on the inner wall of the sleeve hole near the connecting end, and a first sealing ring is sleeved in the first sealing groove.

[0013] The provided sealing protrusion increases the contact area when connecting to the external terminal sealing tube, improves the stability of the connection, and prevents the outer surface of the connection end from falling off easily due to being flat.

[0014] The provided first sealing end further improves the sealing performance of the sleeve hole, thereby reducing the intrusion of external dust or liquid and improving the sealing insulation performance of the interior of the sleeve hole.

[0015] Further to the above description, three reinforcing protrusions are formed on the outer surface of the mounting end, evenly spaced along the axial direction of the mounting end. A second sealing groove is formed on the inner wall of the sleeve hole near the mounting end, and a second sealing ring is inserted into the second sealing groove. The reinforcing protrusions improve the retraction of the insulating tube after expansion, thereby further enhancing the wrapping strength and sealing performance of the cable. The second sealing ring also improves the sealing and insulation performance of the sleeve hole.

[0016] Furthermore, in the above description, the insulating tube, umbrella skirt, reinforcing ribs, sealing protrusions and reinforcing protrusions are integrally molded by liquid silicone injection molding.

[0017] It enhances the waterproof and dustproof effects, ensures the airtightness of the product, and effectively guarantees the stability and reliability of physical and electrical properties.

[0018] The beneficial effects of the present invention are as follows: the strength of the insulating tube can be enhanced by the raised reinforcement ribs on the outer surface of the insulating tube, and the effect of resisting external force and extrusion can be improved. At the same time, the reinforcement ribs are distributed between the two umbrella skirts, which further enhances the stability and reliability of the overall structure of the insulating tube, and improves the installation tension strength when the socket hole is connected to the external original. The sealing protrusion design on the outer surface of the connecting end provides a good sealing effect for the terminal sealing tube connected to the outside, reduces the intrusion of moisture and dust into the socket hole, ensures the stability and safety of the connection, and can improve the sealing insulation effect. The reinforced protrusion on the outer surface of the installation end enhances the firmness of the connection with the cable, reduces the risk of loosening or falling off due to cable tension or external force, and enhances the sealing when connected to the outside, improves the stability and reliability of the installation, and improves its practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional diagram from a top-down perspective of this embodiment;

[0020] Figure 2 This is a three-dimensional diagram of the embodiment from a bottom-up perspective;

[0021] Figure 3 This is the main view of the present embodiment;

[0022] Figure 4 for Figure 3 Cross-sectional view of AA;

[0023] The reference numerals in the figure are: 1-insulating tube, 2-stress cone, 3-sleeve hole, 4-umbrella skirt, 5-angle, 6-reinforcement rib, 7-connecting end, 8-mounting end, 9-sealing protrusion, 10-reinforcement protrusion, 11-mounting groove, 12-through hole, 13-first sealing groove, 14-first sealing ring, 15-second sealing groove, 16-second sealing ring, 17-support tube. DETAILED DESCRIPTION

[0024] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementations.

[0025] In this embodiment, refer to Figures 1-4 The specifically implemented cold-shrink cable outdoor terminal includes an insulating tube 1 and a stress cone 2 arranged in the insulating tube 1. The insulating tube 1 is a hollow tube structure. A sleeve hole 3 is provided inside the insulating tube 1. The stress cone 2 is installed in the sleeve hole 3 in pair. A detachable support tube 17 is sleeved in the sleeve hole 3. The outer surface of the insulating tube 1 is provided with nine umbrella skirts 4. The upper surface of the umbrella skirt 4 is inclined and forms an inclined angle 5 with the outer surface of the insulating tube 1. The outer surface of the insulating tube 1 is formed with eight raised reinforcement ribs 6, and the reinforcement ribs 6 are correspondingly distributed between the two umbrella skirts 4. One end of the insulating tube 1 is provided with a connecting end 7 for connecting an external terminal, and the other end of the insulating tube 1 is provided with a mounting end 8 for connecting a cable. The outer surface of the connecting end 7 is formed with a sealing protrusion 9, which is distributed around the outer surface of the connecting end 7. The outer surface of the mounting end 8 is formed with a reinforcement protrusion 10, which is distributed around the outer surface of the mounting end 8.

[0026] A mounting groove 11 for receiving the stress cone 2 is formed inside the sleeve hole 3 near the mounting end 8. The stress cone 2 is embedded in the mounting groove 11. A conductive through hole 12 is formed inside the stress cone 2. The inner diameter of the through hole 12 matches the inner diameter of the sleeve hole 3. The matching arrangement of the through hole 12 and the sleeve hole 3 facilitates the connection of the cable.

[0027] Nine sheds 4 are provided, spaced axially along the outer surface of the insulating tube 1. This increases the effective creepage distance and improves anti-fouling performance. Eight reinforcing ribs 6 are arranged circumferentially along the outer surface of the insulating tube 1, spaced axially along the outer surface, and positioned between corresponding sheds 4. These ribs improve the stability and reliability of the insulating tube 1 connection. When the socket hole 3 is expanded and connected, the ribs enhance the tensioning seal, improving the sealing and secureness of the connection.

[0028] The sheds 4 are primarily divided into two sections. The six sheds 4 in the first section, located near the connection end 7, form an angle 5 of 98 degrees between their upper surfaces and the outer surface of the insulating tube 1. The three sheds 4 in the second section, located near the mounting end 8, form an angle 5 of 107 degrees between their upper surfaces and the outer surface of the insulating tube 1. This angle 5 effectively improves resistance to ice and snow adhesion, reduces dust adhesion, and facilitates cleaning.

[0029] Three sealing protrusions 9 are formed on the outer surface of the connection end 7, spaced evenly apart along the axial direction of the connection end 7. A first sealing groove 13 is formed on the inner wall of the sleeve hole 3 near the connection end 7, and a first sealing ring 14 is sleeved within the first sealing groove 13. The provision of these sealing protrusions 9 increases the contact area when connecting to the external terminal gland and improves the stability of the connection, preventing the connection end 7 from falling off due to its flat outer surface. The provision of the first sealing end further enhances the sealing of the sleeve hole 3, reducing the intrusion of external dust or liquids and improving the sealing and insulation performance of the interior of the sleeve hole 3.

[0030] Three reinforcement protrusions 10 are formed on the outer surface of the mounting end 8, spaced evenly apart along the axial direction of the mounting end 8. A second sealing groove 15 is formed on the inner wall of the sleeve hole 3 near the mounting end 8, and a second sealing ring 16 is inserted into the second sealing groove 15. The reinforcement protrusions 10 improve the retraction of the insulating tube 1 after expansion, thereby further enhancing the cable wrapping strength and sealing performance. The second sealing ring 16 also improves the sealing and insulation performance of the sleeve hole 3.

[0031] The insulating tube 1, shed 4, reinforcing ribs 6, sealing protrusions 9, and reinforcing protrusions 10 are integrally molded using liquid silicone injection molding. This integrated molding enhances waterproofing and dustproofing, ensures product airtightness, and effectively guarantees the stability and reliability of physical and electrical properties.

[0032] The outdoor terminal in this embodiment is mainly suitable for connecting the insulation shield of 35KV high-voltage power cables. Specifically, it is suitable for improving the pollution resistance, plateau weather resistance and strength in extreme environments such as plateaus and high altitudes, and effectively improving the safety and stability of power transmission.

[0033] Specific installation implementation process: the insulating tube 1 is expanded through the socket hole 3 and is socketed on the support tube 17, so that when its outdoor terminal is connected to the cable, the hollow support tube 17 is socketed with the external cable. At this time, the support tube 17 is pulled out and disassembled from the installation end 8 of the insulating tube 1, so that the insulating tube 1 rebounds and resets, so that its socket hole 3 is socketed on the corresponding cable and wrapped with the outer surface of the cable, so that it completes the insulation protection of the cable connection, makes the support tube 17 easy to disassemble and withdraw, and is convenient for construction.

[0034] The specific structure of this embodiment is as follows: the raised reinforcing ribs 6 on the outer surface of the insulating tube 1 can enhance the strength of the insulating tube 1 and improve its resistance to external forces and extrusion. At the same time, each reinforcing rib 6 is distributed between the two sheds 4, further enhancing the stability and reliability of the overall structure of the insulating tube 1, and improving the installation tension strength when the socket hole 3 is connected to an external component. The sealing protrusion 9 on the outer surface of the connecting end 7 provides a good sealing effect for the terminal sealing tube connected to the external terminal, reducing the intrusion of moisture and dust into the socket hole 3, ensuring the stability and security of the connection. The inclined design of the upper surface of the shed 4 enhances its anti-adhesion and anti-fouling capabilities, making it easier for dirt to slide off, reducing moisture accumulation and dirt accumulation, improving the weather resistance and self-cleaning properties of the outdoor terminal, and ensuring long-term stable electrical performance. The reinforcing protrusion 10 on the outer surface of the mounting end 8 strengthens the connection with the external cable when connected, reduces the risk of loosening or falling off due to cable tension or external forces, and enhances the sealing when connected to the external terminal, improving the stability and reliability of the installation, and improving its practicality.

[0035] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention is disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of the above-disclosed technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technology of the present invention, which do not depart from the content of the technical solution of the present invention, are within the scope of the technical solution of the present invention.

Claims

1. A cold-shrink cable outdoor terminal, comprising an insulating tube and a stress cone disposed within the insulating tube. The insulating tube is a hollow tube structure with a socket hole disposed therein. The stress cone is mounted in a pair within the socket hole. A detachable support tube is socketed within the socket hole. The terminal is characterized by: The outer surface of the insulating tube is provided with a plurality of umbrella skirts, the upper surfaces of the umbrella skirts are inclined and form an inclined angle with the outer surface of the insulating tube, the outer surface of the insulating tube is formed with a plurality of raised reinforcing ribs, and the reinforcing ribs are correspondingly distributed between the two umbrella skirts, one end of the insulating tube is provided with a connecting end for connecting an external terminal, and the other end of the insulating tube is provided with a mounting end for connecting a cable, the outer surface of the connecting end is formed with a sealing protrusion, and the sealing protrusion is distributed around the outer surface of the connecting end, and the outer surface of the mounting end is formed with a reinforcing protrusion, and the reinforcing protrusion is distributed around the outer surface of the mounting end.

2. The cold shrinkable cable outdoor terminal according to claim 1, characterized in that: The sleeve hole is formed with a mounting groove for embedding the stress cone near the mounting end. The stress cone is embedded in the mounting groove. A conductive through hole is opened inside the stress cone. The inner diameter of the through hole matches the inner diameter of the sleeve hole.

3. The cold shrinkable cable outdoor terminal according to claim 1, characterized in that: There are nine umbrella skirts provided, and the nine umbrella skirts are axially spaced and distributed along the outer surface of the insulating tube.

4. The cold shrinkable cable outdoor terminal according to claim 3, characterized in that: The reinforcing ribs are distributed around the outer surface of the insulating tube. There are eight reinforcing ribs, and the eight reinforcing ribs are distributed axially at intervals along the outer surface of the insulating tube. The reinforcing ribs are respectively arranged between the corresponding two umbrella skirts.

5. The cold shrinkable cable outdoor terminal according to any one of claims 1 to 4, characterized in that: The sealing protrusion is formed on the outer surface of the connecting end, and there are three sealing protrusions. The three sealing protrusions are evenly spaced along the axial direction of the connecting end. A first sealing groove is opened on the inner wall of the sleeve hole near the connecting end, and a first sealing ring is sleeved in the first sealing groove.

6. The cold shrinkable cable outdoor terminal according to any one of claims 1 to 4, characterized in that: The reinforcing protrusion is formed on the outer surface of the mounting end, and there are three reinforcing protrusions. The three reinforcing protrusions are evenly spaced along the axial direction of the mounting end. A second sealing groove is opened on the inner wall of the sleeve hole near the mounting end, and a second sealing ring is sleeved in the second sealing groove.

7. The cold shrinkable cable outdoor terminal according to claim 6, characterized in that: The insulating tube, umbrella skirt, reinforcing rib, sealing protrusion and reinforcing protrusion are integrally formed by liquid silicone injection.

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