CN215988133U

CN215988133U - Sensing type composite cable for elevator fault alarm

Info

Publication number: CN215988133U
Application number: CN202121973415.9U
Authority: CN
Inventors: 王桂琴; 朱海棠; 蒋洪全; 俞国峰; 黄琳; 李高霞
Original assignee: JIANGSU JIANGYANG CABLE CO Ltd
Current assignee: JIANGSU JIANGYANG CABLE CO Ltd
Priority date: 2021-08-22
Filing date: 2021-08-22
Publication date: 2022-03-08
Anticipated expiration: 2031-08-22

Abstract

The utility model relates to a sensing type composite cable for elevator fault alarm. The core comprises a plurality of cores, wherein each core comprises a conductor (1), a ceramic silicon rubber belt fireproof inner isolation layer (2) is wrapped outside the conductor (1), an insulating layer (3) is arranged outside the ceramic silicon rubber belt fireproof inner isolation layer (2), and a tinned copper wire partial shield (41) or a tinned copper wire braided partial shield (41) is arranged outside the insulating layer (3); the core bodies are externally provided with an annealing tinned copper wire total shield (42), the annealing tinned copper wire total shield (42) is externally provided with a PET outer isolation layer (5), and the PET outer isolation layer (5) is provided with an outer protection layer (6). The sensing type composite cable for the elevator fault alarm is developed by meeting the high temperature resistance and environmental protection requirements of the environment-friendly wire cable for the fire protection system, increasing the high temperature resistance and fire resistance of the cable and prolonging the rescue time.

Description

Sensing type composite cable for elevator fault alarm

Technical Field

The utility model relates to a sensing type composite cable for elevator fault alarm, and belongs to the technical field of industrial wires and cables.

Background

The elevator is in a severe service environment, and the cable is required to have excellent oxidation resistance, corrosion resistance and bending resistance so as to meet the use requirement of a laying environment; moreover, the elevator needs to reciprocate up and down, so that the flexibility and the bending performance of the cable are required to be good, and the bending radius of the cable during dynamic and static laying is required to be small; meanwhile, the cable is required to have good shielding and anti-interference performance, and the existing cable cannot well meet the requirements, so that further improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects and provides the sensing type composite cable for the elevator fault alarm, which is developed by meeting the high temperature resistance and environmental protection requirements of the environment-friendly wire cable for the fire protection system, increasing the high temperature resistance and fire resistance of the cable and prolonging the rescue time.

The technical scheme adopted by the utility model is as follows: a sensing type composite cable for elevator fault warning comprises a plurality of cores, wherein each core comprises a conductor (1), the conductor (1) is wrapped by a ceramic silicon rubber tape fireproof inner separation layer (2), an insulating layer (3) is arranged outside the ceramic silicon rubber tape fireproof inner separation layer (2), and a tinned copper wire separate shield (41) or a tinned copper wire braided separate shield (41) is arranged outside the insulating layer (3);

the core bodies are externally provided with an annealing tinned copper wire total shield (42), the annealing tinned copper wire total shield (42) is externally provided with a PET outer isolation layer (5), and the PET outer isolation layer (5) is provided with an outer protection layer (6).

Further, the conductor (1) comprises a plurality of tinned copper wire stranded structures, and the adjacent layers are oppositely and regularly stranded according to a bundle stranding pitch ratio of 10-14 times.

Further, the insulating layer (3) is directly coated by adopting a flame-retardant environment-friendly polypropylene material in a heating extrusion manner.

Furthermore, two layers of environment-friendly, high-temperature-resistant and anti-interference PET isolation belts are arranged outside the annealing tinned copper wire total shielding (42) in a spiral winding mode to form an outer isolation layer (5), and the winding lap joint rate is larger than 30%.

Furthermore, the outer protective layer (6) is extruded outside the isolating layer (5) by adopting an extrusion mode of direct heating and plasticizing of an environment-friendly polyolefin material which has small smoke amount, low toxicity, high temperature resistance after irradiation and excellent flame retardant property.

Furthermore, the thickness of the insulating layer (3) is 0.40-2.0mm, the monofilament diameter of the partial shield (41) and the total shield (42) is 0.12-0.40mm, and the thickness of the outer protective layer (6) is 0.60-2.0 mm.

The utility model has the advantages that: the conductor is made of copper wires with high tensile strength, the thickness of the insulating layer is 0.40-2.0mm, the diameter of a single wire of the shielding layer is 0.12-0.40mm, and the thickness of the sheath layer is 0.60-2.0mm, so that the low-carbon and environment-friendly requirements of environmental protection and energy conservation at present are met. The ceramic silicon rubber tape wrapped outside the conductor can meet the requirement of continuous work of electric power supply for a fire-fighting system, a firm ceramic protective layer is formed after the wrapped refractory isolation layer is burnt at high temperature after the fire is caught, the oxygen insulation and high temperature resistance reach 1000 ℃, the fire resistance is realized, the rescue time is prolonged, and the circuit integrity after the electrical fire is guaranteed. The adopted single tinned copper wire with better elongation after annealing has the advantages of oxidation resistance and corrosion resistance, meets the use requirement of a laying environment in an elevator shaft, and is twisted into a whole conductor by a small pitch bundle, so that the flexibility and the bending property of a cable can be better ensured, the bending radius is smaller during dynamic and static laying, and the tinned copper wire is suitable for the working condition of up-and-down reciprocating motion of an elevator; the better tinned copper wire of percentage elongation after the shielding layer adopts annealing possesses anti-oxidant, corrosion-resistant excellence, satisfies the environment of laying in the elevator shaft and uses, and the structural design who weaves the shielding guarantees that shielding performance is superior, and the interference killing feature is strong, accords with ROHS environmental protection instruction. The flame-retardant environment-friendly polypropylene and polyolefin material with small smoke amount, low toxicity, high temperature resistance and excellent dielectric and flame retardant properties adopted by the insulating and outer protective layers enables the cable to have better flexibility and high temperature resistant environmental performance, and also has the characteristics of low toxicity, low smoke, high light transmittance, water resistance, oil resistance and flame retardance, thereby conforming to ROHS environmental protection instructions.

Drawings

Fig. 1 is a schematic structural diagram of a sensing type composite cable for elevator fault alarm according to the present invention.

Fig. 2 is a schematic structural diagram of an isolation layer of the sensing type composite cable for elevator fault alarm of the present invention.

Fig. 3 is a schematic diagram of a total shielding layer structure of the sensing type composite cable for elevator fault alarm according to the present invention.

Fig. 4 is a schematic view of a shielding layer structure of the sensing type composite cable for elevator fault alarm according to the present invention.

Fig. 5 is a schematic view of an insulation layer structure of the sensing type composite cable for elevator fault alarm of the present invention.

Fig. 6 is a schematic structural view of an outer-conductor fire-resistant isolation layer of the sensing type composite cable for elevator fault alarm according to the utility model.

Fig. 7 is a schematic view of a conductor structure of a sensing type composite cable for elevator fault alarm according to the present invention.

In the figure, 1 is a conductor, 2 is an inner isolation layer, 3 is an insulation layer, 41 is a partial shield, 42 is a total shield, 5 is an outer isolation layer, and 6 is an outer protection layer.

Detailed Description

A sensing type composite cable for elevator fault alarm comprises a plurality of cores, wherein each core comprises a conductor 1, the conductor 1 is wrapped by a ceramic silicon rubber tape fire-resistant inner isolation layer 2, an insulating layer 3 is arranged outside the ceramic silicon rubber tape fire-resistant inner isolation layer 2, and a tinned copper wire sub-shield 41 or a tinned copper wire braided sub-shield 41 is arranged outside the insulating layer 3;

an annealing tinned copper wire total shielding 42 is arranged outside the cores, a PET outer isolation layer 5 is arranged outside the annealing tinned copper wire total shielding 42, and an outer protection layer 6 is arranged on the PET outer isolation layer 5.

Further, the conductor 1 comprises a plurality of tinned copper wire stranded structures, and the adjacent layers are oppositely and regularly stranded according to a bundle stranding pitch ratio of 10-14 times.

Further, the insulating layer 3 is directly coated by a flame-retardant environment-friendly polypropylene material in a heating extrusion manner.

Further, two layers of environment-friendly, high-temperature-resistant and anti-interference PET isolation belts are arranged outside the annealing tinned copper wire total shielding 42 and spirally wound to form an outer isolation layer 5, and the winding lap joint rate is larger than 30%.

Furthermore, the outer protective layer 6 is extruded and coated outside the isolation layer 5 by adopting an extrusion mode of direct heating and plasticizing of an environment-friendly polyolefin material which has small smoke amount, low toxicity, high temperature resistance after irradiation and excellent flame retardant property.

Furthermore, the thickness of the insulating layer 3 is 0.40-2.0mm, the monofilament diameter of the partial shield 41 and the total shield 42 is 0.12-0.40mm, and the thickness of the outer protective layer 6 is 0.60-2.0 mm.

The utility model will be better understood by reference to the following description taken in conjunction with the accompanying drawings:

the conductor 1 of the utility model is composed of a plurality of single annealed tinned copper wires stranded together in small pitch.

Two layers of ceramic silicon rubber belting fireproof inner isolating layers 2 are lapped outside the conductor 1 in an overlapping mode.

The insulating layer 3 is made of flame-retardant environment-friendly polypropylene material with small smoke amount, low toxicity, high temperature resistance and excellent insulating dielectric property.

A shielding layer is arranged outside the insulating layer 3 and is divided into a mode of adding the partial shielding 41 and the total shielding 42; the sub-shielding 41 adopts two modes of aluminum foil + deplating tin-copper wire sub-shielding or tinning copper wire weaving shielding; the total shielding 42 is an annealing tinned copper wire braided shielding mode, and the sub-shielding 41 and the total shielding 42 are spirally wound by two layers of environment-friendly high-temperature-resistant anti-interference PET isolation belts.

The outer protective layer 6 outside the outer isolation layer 5 is made of environment-friendly polyolefin material with small smoke amount, low toxicity, high temperature resistance after irradiation and excellent flame retardant property.

FIG. 7 is a schematic diagram of a conductor structure of the sensing type composite cable for elevator fault alarm, the adopted annealed tinned copper wires are untwisted and twisted according to a rule that the bundle twisting pitch ratio is 10-14 times that of adjacent layers, and the sensing type composite cable has excellent conductor flexibility and bending performance and meets the requirements of the cable conductor standard. The adopted single tinned copper wire with better elongation after annealing has the advantages of oxidation resistance and corrosion resistance, meets the use requirement of a laying environment in an elevator shaft, and is twisted into a whole conductor by a small pitch bundle, so that the flexibility and the bending property of a cable can be better ensured, the bending radius is smaller during dynamic and static laying, and the tinned copper wire is suitable for the working condition of up-and-down reciprocating motion of an elevator;

FIG. 2 is a schematic diagram of the structure of the isolation layer of the sensing type composite cable for elevator fault alarm, two layers of high temperature resistant anti-interference PET isolation belts are spirally wound outside the shielding layer to form an outer isolation layer 5, the winding lap joint rate is more than 30%, the insulation and the prevention of external heat after being heated are realized, and simultaneously the excellent insulation dielectric capacity of PET improves the anti-interference capacity.

Fig. 3 and 4 are schematic structural diagrams of a total shielding layer and a sub-shielding layer of the sensing type composite cable for elevator fault alarm, respectively, the shielding layer is arranged outside the insulating layer 3, the shielding layer is divided into a sub-shielding 41 and a total shielding 42, and the sub-shielding 41 adopts an aluminum foil + annealing tinned copper wire sub-shielding mode; the overall shield 42 is a braided shield of annealed tinned copper wire. The better tinned copper wire of percentage elongation after the shielding layer adopts annealing possesses anti-oxidant, corrosion-resistant excellence, satisfies the environment of laying in the elevator shaft and uses, and the structural design who weaves the shielding guarantees that shielding performance is superior, and the interference killing feature is strong, accords with ROHS environmental protection instruction.

FIG. 5 is a schematic diagram of an insulation layer structure of the sensing type composite cable for elevator fault alarm, a process method of coating the insulation layer 3 with extrusion molding outside the fireproof inner insulation layer 2 is adopted, and the insulation layer 3 is made of flame-retardant environment-friendly polypropylene materials with small smoke generation amount, low toxicity, high temperature resistance and excellent insulation dielectric property. The cable has better flexibility and high-temperature environment resistance, has the characteristics of low toxicity, low smoke, high light transmittance, water resistance, oil resistance and flame retardance, accords with ROHS environmental protection instructions, and is directly heated and extruded for coating.

Fig. 6 is a schematic structural diagram of a fire-resistant isolation layer outside a conductor of the sensing type composite cable for elevator fault alarm, two layers of overlapped wrapped ceramic silicon rubber tape fire-resistant inner isolation layers 2 outside the conductor 1 can meet the requirement of continuous work of electric power supply for a fire-fighting system, a firm ceramic protection layer is formed after the wrapped ceramic inner isolation layers 2 are burnt at high temperature after ignition, oxygen insulation and high temperature resistance reach 1000 ℃, fire resistance is realized, rescue time is prolonged, and circuit integrity after electric ignition is guaranteed.

Fig. 1 is a schematic structural view of a sensing type composite cable for elevator fault alarm of the present invention, wherein an outer protective layer 6 outside an outer isolation layer 5 is made of an environment-friendly polyolefin material having small smoke generation amount, low toxicity, high temperature resistance after irradiation, and excellent flame retardant property. The cable has better flexibility and high-temperature environment resistance, has the characteristics of low toxicity, low smoke, high light transmittance, water resistance, oil resistance and flame retardance, accords with ROHS environmental protection instructions, and is directly heated and extruded to coat the outer protective layer 6.

Claims

1. The sensing type composite cable for the elevator fault alarm is characterized by comprising a plurality of cores, wherein each core comprises a conductor (1), the conductor (1) is wrapped by a ceramic silicon rubber tape fireproof inner insulating layer (2), an insulating layer (3) is arranged outside the ceramic silicon rubber tape fireproof inner insulating layer (2), and a tinned copper wire separate shield (41) or a tinned copper wire woven separate shield (41) is arranged outside the insulating layer (3);

2. The sensing type composite cable for the elevator fault alarm is characterized in that the conductor (1) comprises a structure of twisting a plurality of tinned copper wires, and the regular twisting of the adjacent layers is opposite according to a bundle twisting pitch ratio of 10-14 times.

3. The sensing type composite cable for elevator fault alarm according to claim 1, wherein the insulating layer (3) is coated by direct heating extrusion of flame-retardant environment-friendly polypropylene material.

4. The sensing type composite cable for elevator fault alarm according to claim 1, characterized in that two layers of environment-friendly, high temperature resistant and anti-interference PET isolation belts are spirally wound outside the annealed tinned copper wire total shield (42) to form an outer isolation layer (5), and the winding lap joint rate is greater than 30%.

5. The sensing type composite cable for the elevator fault alarm according to claim 1, characterized in that the outer protective layer (6) is extruded outside the isolation layer (5) by an extrusion method of direct heating and plasticizing, wherein the extrusion method is applied to environment-friendly polyolefin materials which have small smoke amount, low toxicity, high temperature resistance after irradiation and excellent flame retardant property.

6. The sensing type composite cable for elevator malfunction alerting according to claim 1, wherein the thickness of the insulating layer (3) is 0.40-2.0mm, the monofilament diameter of the partial shield (41) and the total shield (42) is 0.12-0.40mm, and the thickness of the outer sheath (6) is 0.60-2.0 mm.