Cold contraction intermediate joint with flame-retardant structure
By setting a reinforcement cavity and reinforcement assembly inside the cold shrinkage intermediate joint, setting a support ring on the outside, and fixing the flame retardant layer and flame retardant isolation belt inside and outside, the problem of insufficient flame retardant effect of the cold shrinkage intermediate joint is solved, and higher flame retardant capacity and safety are achieved.
Patent Information
- Application Number
- CN202422137139.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-09-02
AI Technical Summary
The existing cold shrinkage intermediate joints are not flame retardant when the cable catches fire, which can easily lead to the spread of the fire and pose safety hazards.
A reinforcement cavity and reinforcement assembly are installed inside the cold shrinkage intermediate joint, a support ring is installed outside, and a flame retardant layer and flame retardant isolation belt are fixed inside and outside, combining the design of the insulation and wear-resistant layer to improve flame retardant and protection capabilities.
It enhances the flame retardant capability of the cold-shrinkage intermediate joint, improves the safety and docking capability of cable connections, and provides good insulation and protection effects.
Smart Images
Figure CN223218817U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cold shrinkage intermediate joints, in particular to a cold shrinkage intermediate joint with a flame retardant structure. Background Art
[0002] A cold shrink joint is a cable connection component primarily used in power lines. This joint utilizes cold shrink technology, meaning it seals and secures cables through the shrinkage of elastic materials without heating or melting the material. Because cold shrink joints offer excellent insulation, they are often wrapped around cable ends to protect them.
[0003] The main purpose of using cold shrink intermediate joints is to ensure the insulation and service life of cables. It is a common type of electrical equipment. Since it is used to protect cables, if the flame retardant effect is poor during use, when the cable catches fire and the flame spreads along the cable, it is easy to form a larger fire spread phenomenon, which may easily lead to safety hazards. Utility Model Content
[0004] The purpose of the present invention is to provide a cold shrink intermediate joint with a flame retardant structure to solve the problem proposed in the above background technology that, since the joint itself is intended to protect the cable, if the flame retardant effect is poor during use, when the cable catches fire and the open flame spreads along the cable, it is easy to form a larger fire spread phenomenon, which is easy to cause safety hazards.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cold-shrink intermediate joint with a flame-retardant structure, comprising a cold-shrink intermediate joint and a side joint, a reinforcement cavity being formed in the shell of the cold-shrink intermediate joint, a reinforcement component being fixed inside the reinforcement cavity, a flame-retardant isolation belt being fixed outside the reinforcement cavity, and a flame-retardant layer being fixed outside the flame-retardant isolation belt.
[0006] Preferably, the reinforcement components are evenly distributed inside the reinforcement cavity, and the reinforcement components are formed into an "X" shape by two rods.
[0007] Preferably, the flame retardant isolation tapes are distributed in two groups inside the cold shrinkage middle joint, and the flame retardant layers are distributed in two groups inside the cold shrinkage middle joint.
[0008] Preferably, a support ring is fixed to the outside of the cold shrink intermediate joint, and the support rings are evenly distributed on the outside of the cold shrink intermediate joint.
[0009] Preferably, thread grooves are provided inside both sides of the cold shrinkage intermediate joint, thread heads are connected inside the thread grooves, and a sealing ring is fixed on one side of the side joint at a position around the thread head.
[0010] Preferably, a threaded connection is formed between the thread groove and the thread head, and the side joints are symmetrically distributed about the central axis of the shrinkage middle joint.
[0011] Preferably, the outer side wall of the cold shrinkage intermediate joint is coated with an insulation layer, and the outer side wall of the insulation layer is fixed with a wear-resistant layer.
[0012] Preferably, the insulating layer and the wear-resistant layer have the same coating surface area, and the insulating layer and the wear-resistant layer are distributed on the same cross section.
[0013] Compared with the prior art, the beneficial effects of the present invention are: the cold shrink intermediate joint with a flame retardant structure not only improves the flame retardant ability, but also improves the docking ability and protection ability of the cold shrink intermediate joint;
[0014] (1) By distributing the support ring on the outside of the cold shrink intermediate joint to form an external support, then forming the reinforcement cavity inside the cold shrink intermediate joint, and then evenly distributing the reinforcement components inside the reinforcement cavity, a certain support protection is formed by the reinforcement components, which reduces the problem of deformation of the cold shrink intermediate joint. At the same time, the flame retardant layer is fixed inside the cold shrink intermediate joint. Therefore, under the design of the flame retardant layer close to the inside and outside, a certain flame retardant effect is improved. The flame retardant isolation tape is used to isolate the flame retardant layer and the reinforcement cavity. Therefore, during the working process, the cold shrink intermediate joint has a certain flame retardant ability, which improves the overall safety.
[0015] (2) By opening the thread grooves on both sides of the cold shrink middle joint, the cable passes through the cold shrink middle joint and then leads out from the side joint. The side of the side joint is fixed with a thread head. Therefore, when assembling, the thread head is rotated to complete the thread connection with the thread groove. Then, under the setting of the sealing ring, a certain sealing protection is formed after the cold shrink middle joint and the side joint are assembled, thereby better improving the overall docking ability during the working process.
[0016] (3) By coating the insulating layer on the outer wall of the cold shrink intermediate joint, the insulating layer is in direct contact with the cold shrink intermediate joint to form a certain insulation protection, and the wear-resistant layer is fixed on the outside of the insulating layer. The wear-resistant layer is located on the outermost side, so the wear-resistant layer forms an external wear-resistant effect, thereby better improving the overall protection capability during the working process. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;
[0018] Figure 2 This is a side structural diagram of the cold shrinkage intermediate joint of the present invention;
[0019] Figure 3 This is a partial front view structural diagram of the side joint of the present invention;
[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the cold shrinkage intermediate joint of the present invention.
[0021] In the figure: 1. Cold shrinkage intermediate joint; 2. Support ring; 3. Side joint; 4. Flame retardant layer; 5. Flame retardant isolation belt; 6. Reinforcement cavity; 7. Reinforcement component; 8. Sealing ring; 9. Threaded head; 10. Threaded groove; 11. Insulation layer; 12. Wear-resistant layer. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0023] See also Figure 1-4 The utility model provides an embodiment: a cold shrinkage intermediate joint with a flame retardant structure, including a cold shrinkage intermediate joint 1 and a side joint 3. A reinforcement cavity 6 is formed in the shell of the cold shrinkage intermediate joint 1, a reinforcement component 7 is fixed inside the reinforcement cavity 6, a flame retardant isolation belt 5 is fixed outside the reinforcement cavity 6, and a flame retardant layer 4 is fixed outside the flame retardant isolation belt 5.
[0024] The reinforcement components 7 are evenly distributed inside the reinforcement cavity 6 , and the reinforcement components 7 are formed into an “X” shape by two rods.
[0025] There are two groups of flame-retardant isolation tapes 5 distributed inside the cold-shrink intermediate joint 1 , and there are two groups of flame-retardant layers 4 distributed inside the cold-shrink intermediate joint 1 .
[0026] Support rings 2 are fixed to the outside of the cold shrink intermediate joint 1 , and the support rings 2 are evenly distributed on the outside of the cold shrink intermediate joint 1 .
[0027] Thread grooves 10 are provided inside both sides of the cold shrink intermediate joint 1 , and thread heads 9 are connected inside the thread grooves 10 . A sealing ring 8 is fixed at a position around the thread head 9 on one side of the side joint 3 .
[0028] A threaded connection is formed between the thread groove 10 and the thread head 9 , and the side joints 3 are symmetrically distributed about the central axis of the shrinkage intermediate joint 1 .
[0029] The outer wall of the cold shrinkage intermediate joint 1 is coated with an insulation layer 11 , and the outer wall of the insulation layer 11 is fixed with a wear-resistant layer 12 .
[0030] The insulating layer 11 and the wear-resistant layer 12 have the same coating surface area, and the insulating layer 11 and the wear-resistant layer 12 are distributed on the same cross section;
[0031] Furthermore, the reinforcement assembly 7 is formed by two rods, which are crossed to form an "X" shape;
[0032] Furthermore, the insulating layer 11 can be made of materials such as silicone rubber, polyvinyl chloride, etc., and the wear-resistant layer 12 can be formed by spraying a wear-resistant agent to form a coating;
[0033] Furthermore, an insulating layer 11 and a wear-resistant layer 12 may also be coated on the outside of the side joint 3 as required;
[0034] Furthermore, the sealing ring 8 can be made of rubber.
[0035] Working principle: First, the thread groove 10 is opened on both sides of the cold shrink intermediate joint 1, so the cable passes through the cold shrink intermediate joint 1 and then leads out from the position of the side joint 3. The thread head 9 is fixed on the side of the side joint 3. Therefore, the thread head 9 is rotated during assembly to allow the thread head 9 to complete the threaded connection with the thread groove 10. Then, under the setting of the sealing ring 8, the cold shrink intermediate joint 1 and the side joint 3 are assembled to form a certain sealing protection, and the reinforcement cavity 6 is formed inside the cold shrink intermediate joint 1, and then the reinforcement component 7 is evenly distributed inside the reinforcement cavity 6. The reinforcement component 7 is used to form a certain support protection, and the support ring 2 is distributed on the outside of the cold shrink intermediate joint 1 to form external support, thereby completing the protection of the cable, and the flame retardant layer 4, the flame retardant isolation belt 5, etc. are used to complete the flame retardant work.
[0036] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.
Claims
1. A cold shrinkage intermediate joint with a flame retardant structure, comprising a cold shrinkage intermediate joint (1) and a side joint (3), characterized in that: A reinforcement cavity (6) is formed in the shell of the cold shrinkage intermediate joint (1), a reinforcement component (7) is fixed inside the reinforcement cavity (6), a flame retardant isolation belt (5) is fixed outside the reinforcement cavity (6), and a flame retardant layer (4) is fixed outside the flame retardant isolation belt (5).
2. The cold shrink intermediate joint with a flame retardant structure according to claim 1, characterized in that: The reinforcement components (7) are evenly distributed inside the reinforcement cavity (6), and the reinforcement components (7) are formed into an "X" shape by two rods.
3. The cold shrink intermediate joint with a flame retardant structure according to claim 1, characterized in that: The flame retardant isolation belts (5) are distributed in two groups inside the cold shrinkage middle joint (1), and the flame retardant layers (4) are distributed in two groups inside the cold shrinkage middle joint (1).
4. The cold shrinkage intermediate joint with a flame retardant structure according to claim 1, characterized in that: A support ring (2) is fixed to the outside of the cold shrink intermediate joint (1), and the support rings (2) are evenly distributed on the outside of the cold shrink intermediate joint (1).
5. The cold shrink intermediate joint with a flame retardant structure according to claim 1, characterized in that: Thread grooves (10) are provided inside both sides of the shrinkage intermediate joint (1), thread heads (9) are connected inside the thread grooves (10), and a sealing ring (8) is fixed at a position around the thread head (9) on one side of the side joint (3).
6. The cold shrink intermediate joint with a flame retardant structure according to claim 5, characterized in that: A threaded connection is formed between the thread groove (10) and the thread head (9), and the side joints (3) are symmetrically distributed about the central axis of the shrinkage intermediate joint (1).
7. The cold shrink intermediate joint with a flame retardant structure according to claim 1, characterized in that: The outer side wall of the cold shrinkage intermediate joint (1) is coated with an insulation layer (11), and the outer side wall of the insulation layer (11) is fixed with a wear-resistant layer (12).
8. The cold shrinkage intermediate joint with a flame retardant structure according to claim 7, characterized in that: The insulating layer (11) and the wear-resistant layer (12) have the same coating surface area, and the insulating layer (11) and the wear-resistant layer (12) are distributed on the same cross section.