A high flame retardant cable having a chlorinated polyethylene outer jacket

Abstract

The utility model belongs to high flame -retardant cable technical field, concretely is a kind of high flame -retardant cable with chlorinated polyethylene outer sheath, including filler layer, the inside fixedly connected with wire core of filler layer, the outside fixedly connected with impact resistance layer of filler layer, the outside fixedly connected with temperature insulation layer of impact resistance layer, the outside fixedly connected with tensile layer of temperature insulation layer, the outside fixedly connected with outer sheath of tensile layer.The utility model is provided with impact resistance layer, it is favorable to improve the impact resistance of cable, when cable is impacted, outer cover can extrude bellows, by extrusion, bellows is shrunk, when shrinking, the gas in bellows is extruded, the gas is extruded and generates reverse force, to prevent external force continue to intrude into the inside of cable, ensure cable inside intact, prolong the service life of cable.

Description

Technical Field

[0001] This utility model belongs to the field of high flame retardant cable technology, specifically a high flame retardant cable with a chlorinated polyethylene outer sheath. Background Technology

[0002] High flame-retardant cables are special cables that effectively suppress flame spread under fire conditions and possess extremely strong fire resistance. They are widely used in locations with high fire safety requirements. Chlorinated polyethylene (CPE) is a modified polymer material produced through the chlorination reaction of polyethylene. It has good weather resistance, chemical stability, and flexibility. When the chlorine content of CPE is high, it exhibits self-extinguishing properties and can be used as a flame-retardant material for the outer sheath of cables.

[0003] Existing high flame-retardant cables with chlorinated polyethylene outer sheaths have poor impact resistance. When subjected to impacts from external objects, the internal cores are easily damaged, causing the cable to malfunction, shortening its service life, and posing safety hazards. Summary of the Invention

[0004] The purpose of this invention is to provide a high flame-retardant cable with a chlorinated polyethylene outer sheath and good impact resistance, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A high flame-retardant cable with a chlorinated polyethylene outer sheath is provided, comprising a filling layer, a wire core fixedly connected inside the filling layer, an impact-resistant layer fixedly connected to the outside of the filling layer, a thermal insulation layer fixedly connected to the outside of the impact-resistant layer, a tensile layer fixedly connected to the outside of the thermal insulation layer, and an outer sheath fixedly connected to the outside of the tensile layer. The impact-resistant layer includes an inner sleeve fixedly connected to the outside of the filling layer, a support ring fixedly connected to the outside of the inner sleeve, an outer sleeve fixedly connected to the outside of the support ring, and fixing blocks fixedly connected to the outside of both the inner sleeve and the inner side of the outer sleeve. A corrugated pipe is fixedly connected between the fixing blocks.

[0006] Optionally, the filling layer includes a filling body, wherein an aramid fiber strip is fixedly connected inside the filling body, and the filling body has fixing holes inside.

[0007] Optionally, the wire core includes a glass fiber layer fixedly connected inside the filler layer, an insulation layer fixedly connected inside the glass fiber layer, and a conductor fixedly connected inside the insulation layer.

[0008] Optionally, the tensile layer includes a silicone rubber sleeve fixedly connected to the outside of the insulation layer, and a stainless steel wire is fixedly connected inside the silicone rubber sleeve.

[0009] Optionally, the outer sheath is made of chlorinated polyethylene.

[0010] Optionally, the bellows has a hollow interior and is filled with nitrogen gas.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This invention improves the impact resistance of cables by incorporating an impact-resistant layer. When the cable's outer surface dents inward due to an impact from a foreign object, the outer jacket compresses the corrugated tube, causing it to contract. This contraction compresses the gas inside the corrugated tube, generating a counterforce that prevents further penetration and ensures the cable's internal integrity. The rubber impact-resistant layer further buffers impacts, protecting the cable's internal structure and extending its lifespan. Furthermore, the nitrogen gas filling the corrugated tube allows it to escape when the external flame-retardant material is damaged by a fire. This reduces the oxygen concentration in the fire environment, preventing further combustion and demonstrating a flame-retardant effect. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the filling layer of this utility model;

[0016] Figure 3 This is a cross-sectional structural diagram of the impact-resistant layer of this utility model;

[0017] Figure 4 This utility model Figure 3 A magnified structural diagram of point A in the middle.

[0018] In the diagram: 1. Filler layer; 101. Filler body; 102. Aramid fiber strip; 103. Fixing hole; 2. Core wire; 201. Conductor core; 202. Insulation layer; 203. Fiberglass layer; 3. Impact-resistant layer; 301. Inner sleeve; 302. Support ring; 303. Outer sleeve; 304. Fixing block; 305. Corrugated pipe; 4. Thermal insulation layer; 5. Tensile layer; 501. Silicone rubber sleeve; 502. Stainless steel wire; 6. Outer sheath. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0021] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] Reference Figures 1 to 4The present invention will now be described. A high flame-retardant cable with a chlorinated polyethylene outer sheath includes a filling layer 1, a wire core 2 fixedly connected inside the filling layer 1, an impact-resistant layer 3 fixedly connected outside the filling layer 1, and a heat insulation layer 4 fixedly connected outside the impact-resistant layer 3. The heat insulation layer 4 is made of ceramic fiber material and has excellent flame-retardant and heat insulation properties, ensuring that the inside of the cable is not affected by the external temperature. A tensile layer 5 is fixedly connected outside the heat insulation layer 4, and an outer sheath 6 is fixedly connected outside the tensile layer 5. The impact-resistant layer 3 includes an inner sleeve 301 fixedly connected outside the filling layer 1, a support ring 302 fixedly connected outside the inner sleeve 301, the support ring 302 being used to support the inner sleeve 301 and the outer sleeve 303, and an outer sleeve 303 fixedly connected outside the support ring 302. Fixing blocks 304 are fixedly connected to both the outer side of sleeve 301 and the inner side of outer sleeve 303. Corrugated pipes 305 are fixedly connected between fixing blocks 304. Inner sleeve 301, support ring 302, outer sleeve 303, fixing blocks 304 and corrugated pipes 305 are all made of rubber. When the cable is impacted by a foreign object and the outside of the cable is dented inward, the outer sleeve 303 will squeeze the corrugated pipe 305. The compression causes the corrugated pipe 305 to contract. When it contracts, it will compress the gas inside the corrugated pipe 305. The gas being compressed will generate a reverse force, thereby preventing the external force from continuing to penetrate into the inside of the cable, ensuring the integrity of the cable's interior. In addition, the rubber impact-resistant layer 3 can buffer the impact, further ensuring the integrity of the cable's interior and extending the cable's service life.

[0024] In another embodiment of the present invention, the filling layer 1 includes a filling body 101, and an aramid fiber strip 102 is fixedly connected inside the filling body 101. The aramid fiber strip 102 has good tensile strength and can enhance the tensile performance of the cable. The filling body 101 is provided with a fixing hole 103 inside, which is used to fix the wire core 2.

[0025] In another embodiment of the present invention, the wire core 2 includes a glass fiber layer 203 fixedly connected inside the filling layer 1, an insulating layer 202 fixedly connected inside the glass fiber layer 203, and a conductor core 201 fixedly connected inside the insulating layer 202. The glass fiber layer 203 has good flame retardant properties and can still ensure the integrity of the conductor core 201 when the external flame retardant material is damaged.

[0026] In another embodiment of this utility model, the tensile layer 5 includes a silicone rubber sleeve 501 fixedly connected to the outside of the insulation layer 4. A stainless steel wire 502 is fixedly connected inside the silicone rubber sleeve 501. The silicone rubber sleeve 501 has good tensile strength, and the tensile strength is further improved under the action of the stainless steel wire 502, making the cable stronger.

[0027] In another embodiment of this utility model, the outer sheath 6 is made of chlorinated polyethylene, and the chlorine content of the chlorinated polyethylene is greater than 40%, which has high flame retardancy and self-extinguishing properties, and can better protect the cable in the event of a fire.

[0028] In another embodiment of this utility model, the corrugated pipe 305 has a hollow structure inside and is filled with nitrogen. When the flame-retardant material on the outside of the cable is destroyed by fire, the nitrogen inside the corrugated pipe 305 can escape due to the high temperature melting, which reduces the oxygen concentration in the fire environment and makes it impossible for combustion to continue, thus having a certain flame-retardant effect.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 high flame-retardant cable with a chlorinated polyethylene outer sheath, comprising a filler layer (1), characterized in that: The inner core (2) of the filling layer (1) is fixedly connected, the outer side of the filling layer (1) is fixedly connected to the impact-resistant layer (3), the outer side of the impact-resistant layer (3) is fixedly connected to the heat insulation layer (4), the outer side of the heat insulation layer (4) is fixedly connected to the tensile layer (5), the outer side of the tensile layer (5) is fixedly connected to the outer sheath (6), the impact-resistant layer (3) includes an inner sleeve (301) fixedly connected to the outer side of the filling layer (1), the outer side of the inner sleeve (301) is fixedly connected to the outer side of the inner sleeve (301), the outer side of the support ring (302) is fixedly connected to the outer side of the support ring (302), the outer side of the support ring (302) is fixedly connected to the outer side of the outer sleeve (303), the outer side of the inner sleeve (301) and the inner side of the outer sleeve (303) are both fixedly connected to the fixing blocks (304), and the corrugated pipe (305) is fixedly connected between the fixing blocks (304).

2. The high flame retardant cable with a chlorinated polyethylene outer jacket of claim 1, characterized in that: The filling layer (1) includes a filling body (101), an aramid fiber strip (102) is fixedly connected inside the filling body (101), and a fixing hole (103) is provided inside the filling body (101).

3. The high flame retardant cable with a chlorinated polyethylene outer jacket of claim 1, wherein: The core (2) includes a glass fiber layer (203) fixedly connected inside the filling layer (1), an insulation layer (202) fixedly connected inside the glass fiber layer (203), and a conductor (201) fixedly connected inside the insulation layer (202).

4. The high flame retardant cable with a chlorinated polyethylene outer jacket of claim 1, wherein: The tensile layer (5) includes a silicone rubber sleeve (501) fixedly connected to the outside of the thermal insulation layer (4), and a stainless steel wire (502) is fixedly connected inside the silicone rubber sleeve (501).

5. The high flame retardant cable with a chlorinated polyethylene outer jacket of claim 1, wherein: The outer sheath (6) is made of chlorinated polyethylene.

6. The high flame retardant cable with a chlorinated polyethylene outer jacket of claim 1, wherein: The interior of the corrugated pipe (305) is hollow and filled with nitrogen gas.

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