Leak-tight cold shrink intermediate joint

Abstract

The utility model discloses a sealed leak -proof cold shrink intermediate joint, it includes intermediate joint main part, and the both ends of intermediate joint main part are fixedly connected with sealing mechanism respectively, and the bottom fixedly connected with bandage of sealing mechanism, sealing mechanism is composed of rubber cover, sealing washer and support mechanism, and one end of rubber cover is fixedly connected with intermediate joint main part, sealing washer is fixedly connected in the inner wall of rubber cover, and support mechanism is located in rubber cover and opens up rubber cover, and bandage is fixedly connected in the bottom of rubber cover, and bandage is located in the side of sealing washer away from intermediate joint main part. Through support mechanism to open up rubber cover, and rubber cover drives sealing washer to open, and it is convenient for cable to pass, and after taking out support mechanism, and rubber cover and sealing washer elastic reset to be wrapped on the surface of cable, and avoid the water vapor through cable insulation layer and the connecting place of cold shrink intermediate joint.

Description

Technical Field

[0001] This utility model relates to the field of intermediate joint technology, and in particular to a cold shrink intermediate joint that is sealed and leak-proof. Background Technology

[0002] Cable shrink joints are crucial components in power systems, primarily serving to connect two cable segments and ensure the continuity and safety of power transmission. The working principle of cable shrink joints is mainly based on the properties of shrinkable materials. These materials are pre-stretched during manufacturing to create internal stress. When the joint is fitted onto the cable, the shrinkable material gradually contracts with temperature changes, tightly encasing the cable's insulation layer. This contraction not only ensures a tight connection between the joint and the cable but also forms a high-strength seal, effectively preventing moisture, impurities, and other external factors from entering the cable.

[0003] However, the distance between the port of the cold shrink joint and the cable joint is relatively short. When the cable surface comes into contact with water, interface creep can easily occur at the connection between the cable insulation layer and the cold shrink joint, affecting the normal use of the cable. Utility Model Content

[0004] The purpose of this invention is to provide a sealed and leak-proof cold shrink joint that can further seal the surface of the cable and prevent moisture from passing through the cable insulation layer and the connection point of the cold shrink joint.

[0005] To achieve the above objectives, a leak-proof cold-shrink joint is provided, comprising a joint body, with sealing mechanisms fixedly connected to both ends of the joint body, and a binding strap fixedly connected to the bottom of each sealing mechanism. The sealing mechanism consists of a rubber sleeve, a sealing ring, and a support mechanism. One end of the rubber sleeve is fixedly connected to the joint body and communicates with it. The sealing ring is fixedly connected to the inner wall of the rubber sleeve. The support mechanism is located within the rubber sleeve and expands it, positioned on the side of the sealing ring away from the joint body. The binding strap is fixedly connected to the bottom of the rubber sleeve, located on the side of the sealing ring away from the joint body. This design further seals the surface of the cable, preventing moisture from penetrating the cable insulation layer and reaching the cold-shrink joint.

[0006] According to the aforementioned leak-proof cold-shrink intermediate joint, the main body of the intermediate joint consists of an outer shielding layer, an insulating layer, a connecting tube, a stress cone, and a shielding tube. The connecting tube is fixedly connected to the shielding tube. The insulating layer wraps around the outside of the shielding tube, and the shielding tube is located in the middle of the insulating layer. The outer shielding layer covers the outside of the insulating layer. The stress cones are respectively installed at the middle of both ends of the insulating layer. A channel for cable connection begins in the middle of the main body of the intermediate joint, and the channel sequentially passes through the middle of the outer shielding layer, the insulating layer, the connecting tube, the stress cone, and the shielding tube. The rubber sleeve is fixedly connected to the insulating layer. The outer shielding layer, the insulating layer, the connecting tube, the stress cone, and the shielding tube constitute the cold-shrink intermediate joint, sealing the connection point of the two connected cables.

[0007] According to the aforementioned leak-proof cold-shrink joint, the outer shielding layer and the outer surface of the rubber sheath behind the sealed cable are wrapped with armor tape. The armor tape improves the wear resistance of the outer shielding layer and the surface of the rubber sheath, preventing the rubber sheath from being damaged by friction and affecting its sealing performance.

[0008] According to the aforementioned leak-proof cold-shrink intermediate joint, the support mechanism consists of two first support plates and two second support plates. Two first support plates and two second support plates are provided, and both can be combined to form a complete circular ring. The two first support plates are symmetrically arranged vertically, and the two second support plates are arranged horizontally. The second support plate is located at the end of the first support plate furthest from the sealing ring. A screw is fixedly connected to the end of the first support plate furthest from the sealing ring, and one end of the screw passes through the second support plate. A nut is installed on the surface of the screw, and the nut cooperates with the screw to connect the second support plate to the first support plate. The first and second support plates are fixed by the screw, allowing the support mechanism to be disassembled, facilitating the removal of the support mechanism from the stretched rubber sleeve by the operator.

[0009] According to the aforementioned leak-proof cold-shrink intermediate joint, the end of the first support plate facing the sealing ring has a smooth bevel. The bevel facilitates the insertion of the support mechanism into the rubber sleeve during the production of the cold-shrink intermediate joint, allowing the support sleeve to be gradually expanded.

[0010] According to the aforementioned leak-proof cold-shrink intermediate joint, the first support plate, the second support plate, and the screw are all made of plastic. The plastic material supports the weight of the support mechanism and improves its corrosion resistance.

[0011] According to the aforementioned leak-proof cold-shrink joint, one end of the strap away from the joint body is fixedly connected to a hook and loop fastener, which is located at the upper end of the strap. The other end of the strap is fixedly connected to a hook and loop fastener, which is located at the bottom of the strap. The hook and loop fastener fasteners allow the strap to be connected end-to-end, securing the strap to the cable surface and further reducing the gap between the rubber sleeve and the cable surface.

[0012] According to the aforementioned leak-proof cold-shrink intermediate joint, the sealing ring and the rubber sleeve are made of the same elastic rubber material. This ensures that the sealing ring and rubber sleeve have good resilience, guaranteeing the sealing effect of the sealing ring on the cable after the support mechanism is removed from the rubber sleeve.

[0013] The above solution has the following advantages: the rubber sleeve is opened by the support mechanism, and the rubber sleeve drives the sealing ring to open, which facilitates the passage of the cable. After the support mechanism is removed, the rubber sleeve and sealing ring elastically reset and wrap around the cable surface, preventing moisture from passing through the cable insulation layer and the connection between the cold shrink intermediate joint.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is a perspective view of the leak-proof cold shrink intermediate joint of this utility model.

[0017] Figure 2 This is a cross-sectional view of the intermediate joint body of the cold shrink intermediate joint of the present invention, which is designed to be sealed and leak-proof.

[0018] Figure 3 This is a cross-sectional view of the sealing mechanism of the leak-proof cold shrink intermediate joint of this utility model.

[0019] Figure 4 An exploded view of the support mechanism of the leak-proof cold shrink intermediate joint of this utility model;

[0020] Figure 5 This is a perspective view of the strap of the cold shrink intermediate joint for sealing and preventing leakage according to this utility model.

[0021] Legend:

[0022] 1. Intermediate joint body; 2. Strap; 3. Sealing mechanism; 4. Outer shielding layer; 5. Insulation layer; 6. Connecting pipe; 7. Stress cone; 8. Shielding pipe; 9. Rubber sleeve; 10. Sealing ring; 11. Support mechanism; 12. First support plate; 13. Screw; 14. Second support plate; 15. Nut; 16. Hook and loop fastener face; 17. Hook and loop fastener side. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0024] Reference Figure 1-5 The present invention relates to a leak-proof cold shrink intermediate joint, comprising an intermediate joint body 1, with sealing mechanisms 3 fixedly connected to both ends of the intermediate joint body 1, and a strap 2 fixedly connected to the bottom of the sealing mechanism 3; the sealing mechanism 3 consists of a rubber sleeve 9, a sealing ring 10, and a support mechanism 11; one end of the rubber sleeve 9 is fixedly connected to the intermediate joint body 1 and communicates with the intermediate joint body 1; the sealing ring 10 is fixedly connected to the inner wall of the rubber sleeve 9; the support mechanism 11 is disposed in the rubber sleeve 9 and expands the rubber sleeve 9, and the support mechanism 11 is disposed on the side of the sealing ring 10 away from the intermediate joint body 1; the strap 2 is fixedly connected to the bottom of the rubber sleeve 9, and the strap 2 is located on the side of the sealing ring 10 away from the intermediate joint body 1.

[0025] The intermediate joint body 1 consists of an outer shielding layer 4, an insulation layer 5, a connecting tube 6, a stress cone 7, and a shielding tube 8. The connecting tube 6 is fixedly connected to the shielding tube 8. The insulation layer 5 wraps around the outside of the shielding tube 8, and the shielding tube 8 is located in the middle of the insulation layer 5. The outer shielding layer 4 covers the outside of the insulation layer 5. The stress cones 7 are respectively installed at the middle of both ends of the insulation layer 5. The intermediate joint body 1 has a channel for cable connection starting from the middle, and the channel passes through the middle of the outer shielding layer 4, the insulation layer 5, the connecting tube 6, the stress cone 7, and the shielding tube 8 in sequence. The rubber sleeve 9 is fixedly connected to the insulation layer 5. The outer shielding layer 4, the insulation layer 5, the connecting tube 6, the stress cone 7, and the shielding tube 8 form a cold-shrink intermediate joint to seal the connection of the two cables.

[0026] The outer shielding layer 4 and the outer surface of the rubber sleeve 9 after sealing the cable are wrapped with armor tape. The armor tape improves the wear resistance of the outer shielding layer 4 and the rubber sleeve 9, and prevents the rubber sleeve 9 from being damaged by friction, thus affecting the sealing performance of the rubber sleeve 9.

[0027] The support mechanism 11 consists of a first support plate 12 and a second support plate 14. There are two of each of the first support plate 12 and the second support plate 14, and the two first support plates 12 and the two second support plates 14 can be combined to form a complete circular plate. The two first support plates 12 are symmetrically arranged vertically, and the two second support plates 14 are arranged horizontally. The second support plate 14 is located at the end of the first support plate 12 away from the sealing ring 10. The end of the first support plate 12 away from the sealing ring 10 is fixedly connected to a screw 13, and one end of the screw 13 passes through the second support plate 14. A nut 15 is installed on the surface of the screw 13, and the nut 15 cooperates with the screw 13 to connect the second support plate 14 to the first support plate 12. The first support plate 12 and the second support plate 14 are fixed by the screw 13 so that the support mechanism 11 can be disassembled, making it convenient for workers to remove the support mechanism 11 from the opened rubber sleeve 9.

[0028] The end of the first support plate 12 facing the sealing ring 10 has a smooth bevel. The bevel facilitates the placement of the support mechanism 11 into the rubber sleeve 9 during the production of the cold shrink intermediate joint, and the support sleeve is gradually stretched open.

[0029] The first support plate 12, the second support plate 14, and the screw 13 are all made of plastic. The plastic material will support the weight of the support mechanism 11 and improve the corrosion resistance of the support mechanism 11.

[0030] The end of the strap 2 away from the main body 1 of the intermediate connector is fixedly connected to a hook and loop fastener 16, and the hook and loop fastener 16 is located at the upper end of the strap 2. The other end of the strap 2 is fixedly connected to a hook and loop fastener 17, and the hook and loop fastener 17 is located at the bottom of the strap 2. The hook and loop fastener 16 and the hook and loop fastener 17 enable the strap 2 to be connected end to end, so that the strap 2 is tied to the surface of the rubber sleeve 9, further reducing the gap between the rubber sleeve 9 and the surface of the cable.

[0031] The sealing ring 10 and the rubber sleeve 9 are made of the same elastic rubber material, which gives the sealing ring 10 and the rubber sleeve 9 good recovery ability, so that after the support mechanism 11 is removed from the rubber sleeve 9, the sealing effect of the sealing ring 10 on the cable is guaranteed.

[0032] Working principle: When in use, insert the two cables to be connected into the intermediate connector body 1 through the sealing mechanisms 3 at both ends of the intermediate connector body 1. After the intermediate connector body 1 shrinks, remove the nut 15 on the screw 13. Then, take out the second support plate 14 and the first support plate 12 in the support mechanism 11 in sequence. The rubber sleeve 9 and the sealing ring 10 elastically reset. The rubber sleeve 9 wraps around the cable, and the sealing ring 10 reduces the gap between the cable surface and the rubber sleeve 9. Finally, pull the strap 2 and wrap it around the rubber sleeve 9. The strap 2 is fixed by the adhesion of the hook side 16 and the hook side 17.

[0033] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A leak-proof, sealed cold-shrink joint, including: The intermediate connector body (1) is characterized in that a sealing mechanism (3) is fixedly connected to both ends of the intermediate connector body (1), and a strap (2) is fixedly connected to the bottom of the sealing mechanism (3); the sealing mechanism (3) is composed of a rubber sleeve (9), a sealing ring (10) and a support mechanism (11), one end of the rubber sleeve (9) is fixedly connected to the intermediate connector body (1), and the rubber sleeve (9) communicates with the intermediate connector body (1), the sealing ring (10) is fixedly connected to the inner wall of the rubber sleeve (9), the support mechanism (11) is located in the rubber sleeve (9) and expands the rubber sleeve (9), and the support mechanism (11) is located on the side of the sealing ring (10) away from the intermediate connector body (1), and the strap (2) is fixedly connected to the bottom of the rubber sleeve (9), and the strap (2) is located on the side of the sealing ring (10) away from the intermediate connector body (1).

2. The leak-proof cold shrink joint according to claim 1, characterized in that, The intermediate connector body (1) is composed of an outer shielding layer (4), an insulating layer (5), a connecting pipe (6), a stress cone (7), and a shielding pipe (8). The connecting pipe (6) is fixedly connected to the shielding pipe (8). The insulating layer (5) wraps around the outside of the shielding pipe (8), and the shielding pipe (8) is located in the middle of the insulating layer (5). The outer shielding layer (4) covers the outside of the insulating layer (5). The stress cone (7) is installed at the middle of both ends of the insulating layer (5). The intermediate connector body (1) has a channel for cable connection starting from the middle, and the channel passes through the middle of the outer shielding layer (4), the insulating layer (5), the connecting pipe (6), the stress cone (7), and the shielding pipe (8) in sequence. The rubber sleeve (9) is fixedly connected to the insulating layer (5).

3. The leak-proof cold-shrink intermediate joint according to claim 2, characterized in that, The outer surface of the outer shielding layer (4) is wrapped with armor tape.

4. The leak-proof cold-shrink intermediate joint according to claim 1, characterized in that, The support mechanism (11) consists of a first support plate (12) and a second support plate (14). There are two of each of the first support plate (12) and the second support plate (14), and the two first support plates (12) and the two second support plates (14) can be combined to form a complete circular plate. The two first support plates (12) are symmetrically combined vertically, and the two second support plates (14) are combined horizontally. The second support plate (14) is located at the end of the first support plate (12) away from the sealing ring (10). The end of the first support plate (12) away from the sealing ring (10) is fixedly connected to a screw (13), and one end of the screw (13) passes through the second support plate (14). A nut (15) is installed on the surface of the screw (13), and the nut (15) cooperates with the screw (13) to connect the second support plate (14) with the first support plate (12).

5. The leak-proof cold-shrink intermediate joint according to claim 4, characterized in that, The end of the first support plate (12) facing the sealing ring (10) is a smooth slope.

6. The leak-proof cold-shrink intermediate joint according to claim 4, characterized in that, The first support plate (12), the second support plate (14) and the screw (13) are all made of plastic.

7. The leak-proof cold shrink joint according to claim 1, characterized in that, The end of the strap (2) away from the middle connector body (1) is fixedly connected to a hook and loop fastener (16), and the hook and loop fastener (16) is located at the upper end of the strap (2). The other end of the strap (2) is fixedly connected to a hook and loop fastener (17), and the hook and loop fastener (17) is located at the bottom of the strap (2).

8. The leak-proof cold shrink joint according to claim 1, characterized in that, The sealing ring (10) and the rubber sleeve (9) are made of the same elastic rubber material.

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