CN215265681U

CN215265681U - Flame-retardant fireproof low-voltage environment-friendly power cable

Info

Publication number: CN215265681U
Application number: CN202121505982.1U
Authority: CN
Inventors: 杨冠鹏
Original assignee: Shenzhen Hongyan Wire Industry Co ltd
Current assignee: Shenzhen Hongyan Wire Industry Co ltd
Priority date: 2021-07-05
Filing date: 2021-07-05
Publication date: 2021-12-21
Anticipated expiration: 2031-07-05

Abstract

The utility model provides a fire-retardant fire prevention type low pressure environmental protection power cable relates to power cable technical field, including live wire and zero line, the equal cladding in live wire and zero line surface has the internal insulation, the twin-wire surface cladding that live wire and zero line formed has the external insulation, the external insulation inner wall has inlayed the fire-retardant area of spiral, and the fire-retardant area of spiral coils along the length direction spiral of this product. Under prior art, when the conflagration breaing out, the cable surface produces the naked light, and the intensity of a fire can stretch along the cable, causes the further diffusion of intensity of a fire, and this product has the fire-retardant area of spiral at the external insulation is embedded, and when the external insulation burning, the fire-retardant area of incombustible spiral can be followed the cable surface and relaxed and drop, drives the external insulation of near burning and drops to the further stretching of the intensity of a fire has been suppressed.

Description

Flame-retardant fireproof low-voltage environment-friendly power cable

Technical Field

The utility model relates to a power cable technical field especially relates to a fire-retardant fire prevention type low pressure environmental protection power cable.

Background

The wire and cable industry, although only a complete set of industries, occupies the value of 1/4, which is the chinese electrical industry. The product has various types and wide application range, relates to the industries of electric power, construction, communication, manufacturing and the like, and is closely related to each department of national economy. The electric wire and cable is also called as artery and nerve of national economy, is a basic device which is indispensable for transmitting electric energy, transmitting information, manufacturing various motors, instruments and meters and realizing electromagnetic energy conversion, and is a necessary basic product in future electrification and information-based society.

At present, domestic power supply cables are used more and more, the cables are electrically connected and signal transmission is carried out between devices, assemblies and assemblies, and systems, the cables are necessary basic elements for forming a complete system, resin, plastics, pvc materials, silicon rubber and the like can be used as non-conductive materials of electric wires at present, the materials are made into insulating layers of the electric wires, electric conductors can be prevented from contacting with the outside, and therefore the situations of electric leakage, short circuit and the like of the electric wires are avoided.

In the cables, low-voltage cables are more applied to civil cables, wherein most of the low-voltage cables are formed by twin wires and comprise a live wire and a zero wire, and the voltage is generally 220V.

In the prior art, the insulation part of the civil low-voltage cable adopts a large amount of flammable plastics, and after open fire is generated due to circuit faults, the fire easily spreads along the electric wire, so that greater harm is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a flame-retardant fireproof low-voltage environment-friendly power cable.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a fire-retardant fire prevention type low pressure environmental protection power cable, includes live wire and zero line, the equal cladding in live wire and zero line surface has the internal insulation, the surface cladding of twin line that live wire and zero line formed has the external insulation, the fire-retardant area of spiral is inlayed to the external insulation inner wall, and the fire-retardant area of spiral coils along the length direction spiral of this product.

Preferably, ammonium carbonate salt dry powder bags are arrayed on the inner side of the outer insulation layer, the ammonium carbonate salt dry powder bags cover the surfaces of the live line and the zero line, ammonium carbonate salt mixed dry powder is filled in the ammonium carbonate salt dry powder bags, and the surfaces of the ammonium carbonate salt dry powder bags are air-permeable bag bodies. When circuit failure happens, the cable generates heat and even generates open fire, the ammonium carbonate salt dry powder bag on the inner side of the external insulation is heated to release carbon dioxide to obstruct oxygen, the further expansion of the fire is prevented, meanwhile, the reaction is endothermic reaction, the cable is timely and effectively cooled, the fire is prevented from being expanded, and therefore the prevention and the suppression of the fire are realized.

Preferably, gaps between the live wire and the zero wire and between the live wire and the external insulation are filled with halogen-free filling, and the halogen-free filling is tightly attached to the inner wall of the external insulation. When a fire disaster happens, the halogen-free filling in the fire disaster can not generate a large amount of toxic gas after being heated or combusted, and the fire disaster prevention device is environment-friendly and healthy.

Preferably, the end part of the product is detachably connected with a connecting pipe, a wiring end is arranged in the connecting pipe, the top end of the wiring end is electrically connected with a live wire, the side wall of the wiring end is electrically connected with a zero line, and the top end of the wiring end is insulated from the side wall. Under the traditional technology, generally adopt two terminal connections to connect electric, one connects the live wire, one connects the zero line, consequently, the condition that contact failure more probably appears exists, in this product, with the terminal combination design of live wire, zero line, the tip is the anode end, and the lateral wall is the cathode end, and adopts insulating part mutual insulation between anode end and the cathode end for the connection of cable and joint is more simple and efficient.

Preferably, the wiring end includes the negative pole end that connects the electricity with the zero line, and the inside cavity of negative pole end, negative pole end inner wall is the insulating part, the inside positive pole end that has inlayed of insulating part, and positive pole end and live wire connect the electricity.

Preferably, the surface of the connecting pipe is sleeved with a sleeve, the sleeve is in threaded connection with the connecting pipe, a joint is fixed at the end of the sleeve, and the joint is electrically connected with the wiring end. To low tension cable, the joint type is various, therefore when carrying out the connection of cable and different joints, comparatively complicated inconvenience, and this product when carrying out the connection of cable and joint, different joints all can adopt similar connected mode, simple swift, only need with the connecting pipe of cable tip and the sleeve pipe threaded connection of joint tip can, screw the joint, until wiring end and joint connect the electricity completely can, realized the swift installation of joint.

Preferably, a cathode seat is embedded in the bottom surface of the interior of the joint, a cathode compression spring is arranged on the bottom surface of the cathode seat, the cathode seat is connected with the cathode of the joint in an electric mode, an anode seat is embedded in the surface of the cathode seat, an anode compression spring is arranged on the bottom surface of the anode seat, and the anode seat is connected with the anode of the joint in an electric mode. When the cable and the connector are installed, after the connector is completely connected with the terminal, the end part of the terminal is abutted against the anode seat, and the anode seat is tightly attached to the anode end under the action of the anode compression spring; in a similar way, the side wall of the wiring terminal is abutted against the inner wall of the cathode seat, and the cathode seat is tightly attached to the cathode end under the action of the cathode compression spring, so that poor contact is prevented.

Preferably, the outer insulating surface is embedded with a stretch-resistant strip, and the stretch-resistant strip is made of PVC material. The design of the anti-stretching strip ensures the anti-stretching strength of the cable, and the cable fault can not be easily caused due to the stretching of the cable.

Advantageous effects

1. Under prior art, when the conflagration breaing out, the cable surface produces the naked light, and the intensity of a fire can stretch along the cable, causes the further diffusion of intensity of a fire, and this product has the fire-retardant area of spiral at the external insulation is embedded, and when the external insulation burning, the fire-retardant area of incombustible spiral can be followed the cable surface and relaxed and drop, drives the external insulation of near burning and drops to the further stretching of the intensity of a fire has been suppressed. And when circuit trouble takes place, the cable generates heat and even produces the naked light, and the inside ammonium carbonate salt dry powder bag of external insulation is heated and releases carbon dioxide separation oxygen, prevents the further expansion of the intensity of a fire, and simultaneously, this reaction is endothermic reaction, carries out timely effectual cooling to the cable, prevents the condition of a fire to expand to the prevention and the suppression to the condition of a fire have been realized.

2. Under the traditional technology, generally adopt two terminal connections to connect electric, one connects the live wire, one connects the zero line, consequently, the condition that contact failure more probably appears exists, in this product, with the terminal combination design of live wire, zero line, the tip is the anode end, and the lateral wall is the cathode end, and adopts insulating part mutual insulation between anode end and the cathode end for the connection of cable and joint is more simple and efficient.

3. To low tension cable, the joint type is various, therefore when carrying out the connection of cable and different joints, comparatively complicated inconvenience, and this product when carrying out the connection of cable and joint, different joints all can adopt similar connected mode, simple swift, only need with the connecting pipe of cable tip and the sleeve pipe threaded connection of joint tip can, screw the joint, until wiring end and joint connect the electricity completely can, realized the swift installation of joint.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a cross-sectional view of the middle joint of the present invention;

fig. 3 is a cross-sectional view of the terminal of the present invention;

fig. 4 is the internal structure diagram of the product of the present invention.

Illustration of the drawings:

1. a service desk; 2. a bottom bracket; 3. a female bracket; 4. a male bracket; 5. an auxiliary table-board; 6. a service desk; 7. a queuing chopping board; 8. a side fixing plate; 9. a screw rod; 10. a male nut; 11. turning over the handle; 12. a force-receiving through hole; 13. positioning the pin column; 14. a female nut.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand, the present invention will be further explained below with reference to the following embodiments and the accompanying drawings, but the following embodiments are only the preferred embodiments of the present invention, and not all embodiments are included. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.

Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

The specific embodiment is as follows:

referring to fig. 1-4, a fire-retardant fire prevention type low pressure environmental protection power cable, includes live wire 1 and zero line 2, and live wire 1 and zero line 2 all coats on the surface have internal insulation 3, and the twinned yarn surface cladding that live wire 1 and zero line 2 formed has external insulation 5, and the 5 inner walls of external insulation have inlayed the fire-retardant area of spiral 6, and the fire-retardant area of spiral 6 spirals along the length direction of this product. Under prior art, when the conflagration breaing out, the cable surface produces the naked light, and the intensity of a fire can stretch along the cable, causes the further diffusion of intensity of a fire, and this product has spiral fire-retardant area 6 at external insulation 5 embedded, and when external insulation 5 burns, incombustible spiral fire-retardant area 6 can be followed the cable surface and relaxed and drop, drives the external insulation 5 of near burning and drops to the further stretching of the intensity of a fire has been suppressed.

Specifically, ammonium carbonate salt dry powder bags 7 are arrayed on the inner side of the outer insulation 5, the ammonium carbonate salt dry powder bags 7 are wrapped on the surfaces of the live wire 1 and the zero wire 2, ammonium carbonate salt mixed dry powder is filled in the ammonium carbonate salt dry powder bags 7, and the surfaces of the ammonium carbonate salt dry powder bags 7 are breathable bag bodies. When circuit failure happens, the cable generates heat and even generates open fire, the ammonium carbonate salt dry powder bag 7 on the inner side of the outer insulation 5 is heated to release carbon dioxide to obstruct oxygen, further expansion of fire is prevented, meanwhile, the reaction is endothermic reaction, timely and effective cooling is carried out on the cable, the expansion of fire is prevented, and therefore prevention and suppression of fire are achieved.

Specifically, the gaps between the live wire 1 and the zero wire 2 and the external insulation 5 are filled with halogen-free filler 4, and the halogen-free filler 4 is tightly attached to the inner wall of the external insulation 5. When a fire disaster happens, the halogen-free filling 4 inside does not generate a large amount of toxic gas after being heated or combusted, and is environment-friendly and healthy.

Specifically, the tip detachably of this product is connected with connecting pipe 8, is equipped with wiring end 9 in the connecting pipe 8, and the top and the live wire 1 of wiring end 9 connect the electricity, and its lateral wall connects the electricity with zero line 2, and the top and the lateral wall of wiring end 9 are insulating. Under the traditional technology, two terminal 9 are generally adopted for power connection, one terminal is connected with a live wire 1, and the other terminal is connected with a zero wire 2, therefore, the condition that poor contact is more likely to occur exists, in the product, the terminal 9 of the live wire 1 and the zero wire 2 is combined, the end part is an anode end 91, the side wall is a cathode end 92, and the anode end 91 and the cathode end 92 are mutually insulated by adopting an insulating part 93, so that the connection between a cable and a joint 10 is simpler, more convenient and faster.

Specifically, the terminal 9 includes a cathode end 92 electrically connected to the neutral line 2, the cathode end 92 is hollow inside, the inner wall of the cathode end 92 is an insulating portion 93, an anode end 91 is embedded inside the insulating portion 93, and the anode end 91 is electrically connected to the live line 1.

Specifically, the surface of the connecting pipe 8 is sleeved with a sleeve 11, the sleeve 11 is in threaded connection with the connecting pipe 8, a connector 10 is fixed at the end of the sleeve 11, and the connector 10 is electrically connected with the wiring end 9. For the low-voltage cable, the connector 10 has various types, so when the cable is connected with different connectors 10, the connection is complex and inconvenient, and when the cable is connected with the connector 10, different connectors 10 can adopt similar connection modes, the connection is simple and rapid, only the connecting pipe 8 at the end part of the cable is connected with the sleeve 11 at the end part of the connector 10 in a threaded manner, the connector 10 is screwed until the wiring terminal 9 and the connector 10 are completely electrified, and the rapid installation of the connector 10 is realized.

Specifically, a cathode seat 14 is embedded in the bottom surface of the interior of the connector 10, a cathode compression spring 15 is arranged on the bottom surface of the cathode seat 14, the cathode seat 14 is electrically connected with the cathode of the connector 10, an anode seat 12 is embedded on the surface of the cathode seat 14, an anode compression spring 13 is arranged on the bottom surface of the anode seat 12, and the anode seat 12 is electrically connected with the anode of the connector 10. When the cable and the connector 10 are installed, after the connector 10 is completely connected with the terminal 9, the end part of the terminal 9 is abutted against the anode holder 12, and the anode holder 12 is tightly attached to the anode end 91 under the action of the anode compression spring 13; similarly, the side wall of the terminal 9 abuts against the inner wall of the cathode holder 14, and the cathode holder 14 and the cathode terminal 92 are tightly attached under the action of the cathode compression spring 15, thereby preventing poor contact.

Specifically, the surface of the external insulation 5 is embedded with a stretch-proof strip 16, and the stretch-proof strip 16 is made of a PVC material. The design of the anti-stretching strips 16 ensures the anti-stretching strength of the cable, and the cable fault cannot be easily caused by stretching of the cable.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a fire-retardant fire prevention type low pressure environmental protection power cable, includes live wire (1) and zero line (2), live wire (1) and zero line (2) surface all the cladding have interior insulation (3), the twin-wire surface cladding that live wire (1) and zero line (2) formed has external insulation (5), its characterized in that: the spiral flame-retardant belt (6) is embedded in the inner wall of the outer insulation (5), and the spiral flame-retardant belt (6) is spirally wound along the length direction of the product.

2. The flame-retardant fireproof low-voltage environment-friendly power cable according to claim 1, characterized in that: ammonium carbonate salt dry powder bags (7) are arrayed on the inner side of the outer insulation (5), the surfaces of the live wire (1) and the zero wire (2) are coated with the ammonium carbonate salt dry powder bags (7), ammonium carbonate salt mixed dry powder is filled in the ammonium carbonate salt dry powder bags (7), and the surfaces of the ammonium carbonate salt dry powder bags (7) are breathable bag bodies.

3. The flame-retardant fireproof low-voltage environment-friendly power cable according to claim 1, characterized in that: gaps between the live wire (1) and the zero wire (2) and the external insulation (5) are filled with halogen-free filling (4), and the halogen-free filling (4) is tightly attached to the inner wall of the external insulation (5).

4. The flame-retardant fireproof low-voltage environment-friendly power cable according to claim 1, characterized in that: the tip detachably of this product is connected with connecting pipe (8), be equipped with wiring end (9) in connecting pipe (8), the top and live wire (1) of wiring end (9) connect the electricity, and its lateral wall connects the electricity with zero line (2), and the top and the lateral wall of wiring end (9) are insulating.

5. The flame-retardant fireproof low-voltage environment-friendly power cable according to claim 4, characterized in that: terminal (9) include with zero line (2) the negative pole end (92) that connect the electricity, and the inside cavity of negative pole end (92), negative pole end (92) inner wall is insulating part (93), insulating part (93) are inside to be inlayed and are held (91) by the positive pole, and hold (91) and live wire (1) electricity.

6. The flame-retardant fireproof low-voltage environment-friendly power cable according to claim 4, characterized in that: the surface of the connecting pipe (8) is sleeved with a sleeve (11), the sleeve (11) is in threaded connection with the connecting pipe (8), a connector (10) is fixed at the end part of the sleeve (11), and the connector (10) is electrically connected with the wiring end (9).

7. The flame-retardant fireproof low-voltage environment-friendly power cable according to claim 6, characterized in that: the cathode seat (14) is embedded in the bottom surface of the interior of the connector (10), a cathode compression spring (15) is arranged on the bottom surface of the cathode seat (14), the cathode seat (14) is connected with the cathode of the connector (10) in an electric mode, an anode seat (12) is embedded in the surface of the cathode seat (14), an anode compression spring (13) is arranged on the bottom surface of the anode seat (12), and the anode seat (12) is connected with the anode of the connector (10) in an electric mode.

8. The flame-retardant fireproof low-voltage environment-friendly power cable according to claim 1, characterized in that: the surface of the external insulation (5) is embedded with a stretch-resistant strip (16), and the stretch-resistant strip (16) is made of PVC material.