CN215345120U

CN215345120U - Mineral insulation heating cable

Info

Publication number: CN215345120U
Application number: CN202121342602.7U
Authority: CN
Inventors: 朱家玲
Original assignee: Zhejiang Zhongce Cable Co ltd
Current assignee: Zhejiang Zhongce Cable Co ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2021-12-28
Anticipated expiration: 2031-06-10

Abstract

The utility model discloses a mineral insulation heating cable which comprises heating core bodies, insulating layers, sheaths, PVC outer sheaths and waterproof layers, wherein the waterproof layers are arranged on the outermost layers of the cable, the heating core bodies are arranged on the inner layers of the cable, the number of the heating core bodies is four, the four heating core bodies are wrapped with the insulating layers, the insulating layers are matched with the shape and the size of the heating core bodies, the four heating core bodies are arranged in the sheaths, the PVC outer sheaths are wrapped with the PVC outer sheaths, the waterproof layers are wrapped outside the PVC outer sheaths, a plurality of cavities are formed between the PVC outer sheaths and the sheaths, a plurality of rubber pads are attached to the inner sides of the PVC outer sheaths, one sides of the rubber pads are matched with the shape and the size of the PVC outer sheaths, through grooves are reserved on the peripheries of the sheaths, two ends of one sides of the rubber pads are connected with springs, the other ends of the springs are led into the through grooves, and the other ends of the springs are connected to the inner walls of the sides of the through grooves. Has the advantages that: when the PVC outer sheath is extruded and bent in a small range, the PVC outer sheath can be pushed to reset through the elasticity of the spring, and the PVC outer sheath has good compression resistance and bending resistance.

Description

Mineral insulation heating cable

Technical Field

The utility model relates to the field of heating cables, in particular to a mineral insulation heating cable.

Background

The heating cable is mainly a wire cable for living heating, plant cultivation, pipeline heat preservation and the like. The heating cable is manufactured by adopting a single or a plurality of alloy electric heating wires as a heating source, adopting high-purity, high-temperature and electric melting crystallized magnesium oxide as a heat conduction insulator, adopting seamless continuous stainless steel or copper pipes as a sheath and adopting a special production process. The place with strong corrosion can be additionally provided with a PE or low-smoke halogen-free jacket.

When the existing heating cable is extruded by external force, the common cable has weaker pressure resistance, cannot bear continuous extrusion of the external force, is easy to break to influence the transmission of electric power, and has potential safety hazard in the use process.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to provide a mineral insulated heating cable, which solves the problems mentioned in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: a mineral insulation heating cable comprises heating core bodies, four insulating layers, a sheath, a PVC outer sheath and a waterproof layer, wherein the waterproof layer is arranged on the outermost layer of the cable, the heating core bodies are arranged on the inner layer of the cable, the four heating core bodies are wrapped with the insulating layers, the insulating layers are matched with the heating core bodies in shape and size, the four heating core bodies are arranged in the sheath, the PVC outer sheath is wrapped with the sheath, the waterproof layer is wrapped with the PVC outer sheath, a plurality of cavities are formed between the PVC outer sheath and the sheath, a plurality of rubber pads are attached to the inner side of the PVC outer sheath, one side of each rubber pad is matched with the PVC outer sheath in shape and size, through grooves are reserved on the periphery of the sheath, the number of the through grooves is multiple, two ends of one side of each rubber pad are connected with springs, and the other ends of the springs are led into the through grooves, the other end of the spring is connected to the inner wall of one side of the through groove.

Further, the insulating layer is made of a magnesium oxide material.

Further, the sheath is made of copper material.

Further, the waterproof layer is made of water-absorbing rubber materials.

Compared with the prior art, the utility model has the following beneficial effects: according to the utility model, when the PVC outer sheath is extruded and bent in a small range, the rubber pad is attached to the inner wall of the PVC outer sheath and is extruded inwards, so that the spring is in a compressed state, when an external object is removed, the PVC outer sheath can be pushed to reset through the elasticity of the spring, the PVC outer sheath has good compression resistance and bending resistance functions, the insulating layer is arranged to play a good insulating role, and the waterproof layer is used for keeping the cable continuously dry.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of a mineral insulated heating cable according to an embodiment of the present invention.

Reference numerals:

1. a heating core; 2. an insulating layer; 3. a sheath; 4. a PVC protective sleeve 5 and a waterproof layer; 6. a rubber pad; 7. a through groove; 8. a spring.

Detailed Description

The following, with reference to the drawings and the detailed description, further description of the present invention is made:

referring to fig. 1, the mineral insulated heating cable according to the embodiment of the present invention includes a heating core 1, an insulating layer 2, a sheath 3, a PVC outer sheath 4 and a waterproof layer 5, the waterproof layer 5 is disposed on the outermost layer of the cable, the heating core 1 is disposed on the inner layer of the cable, the number of the heating cores 1 is four, the insulating layer 2 is wrapped around the four heating cores 1, the insulating layer 2 is adapted to the shape and size of the heating core 1, the four heating cores 1 are disposed in the sheath 3, the PVC outer sheath 4 is wrapped around the sheath 3, the waterproof layer 5 is wrapped around the PVC outer sheath 4, a plurality of cavities are formed between the PVC outer sheath 4 and the sheath 3, a plurality of rubber pads 6 are attached to the inner side of the PVC outer sheath 4, one side of the rubber pads 6 is adapted to the shape and size of the PVC outer sheath 4, through grooves 7 are left around the sheath 3, the through groove 7 is a plurality of, 6 one side both ends of rubber pad are connected with spring 8, the spring 8 other end lets in through groove 7 in, the other end of spring 8 is connected in through groove 7 one side inner wall department.

According to the scheme of the utility model, the insulating layer 2 is made of magnesium oxide material, the heat conduction and insulation effects are good, the sheath 3 is made of copper material, the use efficiency of the device is improved, and the waterproof layer 5 is made of water-absorbing rubber material and is used for keeping the cable dry continuously.

In conclusion, when the PVC outer sheath 4 is extruded and bent in a small range, the rubber pad 6 is attached to the inner wall of the PVC outer sheath 4, the rubber pad 6 is extruded inwards, the spring 8 is in a compressed state, when an external object is removed, the PVC outer sheath 4 can be pushed to reset through the elastic force of the spring 8, the compression resistance and bending resistance functions are good, the insulating layer 2 is arranged to achieve a good insulating effect, and the waterproof layer 5 is used for keeping the cable continuously dry.

In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the utility model as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The mineral insulation heating cable is characterized by comprising heating core bodies (1), insulating layers (2), sheaths (3), PVC outer sheaths (4) and waterproof layers (5), wherein the waterproof layers (5) are arranged on the outermost layers of the cable, the heating core bodies (1) are arranged on the inner layers of the cable, the number of the heating core bodies (1) is four, the insulating layers (2) are wrapped outside the heating core bodies (1), the insulating layers (2) are matched with the heating core bodies (1) in shape and size, the four heating core bodies (1) are arranged in the sheaths (3), the PVC outer sheaths (4) are wrapped outside the sheaths (3), the waterproof layers (5) are wrapped outside the PVC outer sheaths (4), a plurality of cavities are formed between the PVC outer sheaths (4) and the sheaths (3), and a plurality of rubber pads (6) are attached to the inner sides of the PVC outer sheaths (4), rubber pad (6) one side and PVC oversheath (4) shape size looks adaptation, it leads to groove (7) to leave all around on sheath (3), it is a plurality of to lead to groove (7), rubber pad (6) one side both ends are connected with spring (8), spring (8) other end lets in to lead to in groove (7), the other end of spring (8) is connected and is being led to groove (7) one side inner wall department.

2. A mineral-insulated heating cable according to claim 1, characterized in that the insulating layer (2) is made of magnesium oxide material.

3. A mineral-insulated heating cable according to claim 1, characterized in that the sheath (3) is made of copper material.

4. A mineral-insulated heating cable according to claim 1, characterized in that the water-repellent layer (5) is made of a water-absorbent rubber material.