CN217280171U

CN217280171U - Halogen-free flame-retardant welding slag-proof cable

Info

Publication number: CN217280171U
Application number: CN202123455799.8U
Authority: CN
Inventors: 陆新华
Original assignee: Zhejiang Jixin Cable Co Ltd
Current assignee: Zhejiang Jixin Cable Co Ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-08-23
Anticipated expiration: 2031-12-31

Abstract

The utility model discloses a halogen-free flame-retardant welding slag prevention cable, which is internally provided with a conductor, the outer side of the conductor is wrapped with a first insulating layer, and the outer side of the first insulating layer is provided with a shielding layer; the outer side of the shielding layer is provided with a high-temperature resistant layer, the high-temperature resistant layer is made of ceramic fibers, the outer side of the high-temperature resistant layer is provided with a flame retardant layer, and a flame retardant is filled in the flame retardant layer; the outer side of the flame-retardant layer is sleeved with an elastic tube, the tube wall of the elastic tube is of a corrugated structure, and the elastic tube is made of flame-retardant nylon; the elastic tube outside is equipped with outer protective sheath, and outer protective sheath adopts the polyurethane material, outer protective sheath is inside to be equipped with many antitorque bent reinforcing bars. The utility model can effectively improve the flame retardant property of the cable, and the flame retardant layer can limit the combustion in a local range and does not spread; meanwhile, the cable has small smoke amount during combustion, does not generate toxic and corrosive gas and is very environment-friendly.

Description

Halogen-free flame-retardant welding slag-proof cable

Technical Field

The utility model relates to a cable wire technical field, in particular to there is not steamed fire-retardant solder slag cable of preventing.

Background

The cable is a tool for telecommunication or electric power transmission, and generally consists of a cable core formed by stranding a plurality of conductor wire cores and a functional protective sleeve wrapped outside the cable core. The cable insulation layer is wrapped outside various power cables widely applied to buildings, most of cable insulation materials contain halogen, the power cables are extremely dangerous materials for transmitting flames and expanding fire ranges, and after the insulation materials are ignited, a large amount of dense smoke and highly corrosive hydrogen halide gas can be generated, so that the life of people is endangered, and equipment and the environment are harmed.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a there is not steamed fire-retardant welding slag prevention cable can prevent stretching of intensity of a fire, does not produce poisonous, corrosive gas when burning, reduces the harm that the conflagration produced.

Therefore, the technical scheme of the utility model is that: a halogen-free flame-retardant welding slag preventing cable is provided with a conductor inside, a first insulating layer wraps the outer side of the conductor, and a shielding layer is arranged on the outer side of the first insulating layer; the outer side of the shielding layer is provided with a high-temperature resistant layer, the high-temperature resistant layer is made of ceramic fibers, the outer side of the high-temperature resistant layer is provided with a flame retardant layer, and a flame retardant is filled in the flame retardant layer; the outer side of the flame-retardant layer is sleeved with an elastic tube, the tube wall of the elastic tube is of a corrugated structure, and the elastic tube is made of flame-retardant nylon; the elastic tube outside is equipped with outer protective sheath, and outer protective sheath adopts the polyurethane material, outer protective sheath is inside to be equipped with many antitorque bent reinforcing bars.

The high-temperature resistant layer, the flame retardant layer and the elastic tube are arranged in the cable, the flame retardant layer can prevent flame from spreading, and residual flame or residual burning can be automatically extinguished within a limited time, so that the fire is prevented from being enlarged, and the influence of fire is reduced; the ceramic fiber is a fibrous light refractory material and has the advantages of light weight, high temperature resistance, good thermal stability, low thermal conductivity, small specific heat, mechanical shock resistance and the like, so that the high-temperature resistant layer can effectively isolate heat generated during combustion of the flame-retardant layer; when the outside atress of cable, the ripple structure on the elastic tube can effectively reduce pressure to the influence of inner conductor, avoids inner conductor to be twisted, buckles, guarantees cable normal use. The outer protective sleeve is made of PUR polyurethane, so that the cable has the advantages of high wear resistance, hydrolysis resistance, bending resistance, wear resistance, flame retardance, welding slag resistance and the like, and is long in service life; the torsion-resistant reinforcing steel bars on the outer protective sleeve can prevent the cable from being stressed and distorted, and the normal use of the inner conductor of the cable is ensured.

Preferably, the flame retardant is aluminum hydroxide or magnesium hydroxide. When the cable burns, the flame retardant can react to release crystal water and reduce the flame temperature of the cable, thereby preventing the heat caused by the continuous combustion of the flame.

Preferably, the conductor is formed by twisting a plurality of copper wires, a first insulating layer is tightly wrapped on the outer side of the conductor, the first insulating layer is made of cross-linked polyethylene, and the shielding layer is formed by weaving copper wires or tinned copper wires.

Preferably, the corrugations on the elastic tube are arranged along the axial direction, and a plurality of through holes are formed in the elastic tube. The through hole on the elastic tube ensures that the air pressure inside and outside the elastic tube is kept consistent, and after the elastic tube is stressed and deformed, if the pressure disappears, the elastic tube can reset automatically, and cannot be in a shriveled state of negative pressure, thereby ensuring the normal use of the elastic tube.

Preferably, the outer side of the outer protective sleeve is provided with a convex reinforcing rib, and the outer protective sleeve is provided with a plurality of air holes. When the cable is dragged, the reinforcing ribs can prevent the outer protective sleeve from directly rubbing the ground, so that the service life of the outer protective sleeve is prolonged; the air holes in the outer protective sleeve can play a role in heat dissipation, so that the temperature of the cable is prevented from being too high.

Preferably, the inner wall and the outer wall of the elastic tube are respectively connected with the flame retardant layer and the outer protective sleeve and are fixed by an adhesive. The inner wall and the outer wall of the elastic tube are both of corrugated structures and are fixed together with the flame-retardant layer and the outer protective sleeve through the adhesive, so that the elastic tube is prevented from moving and dislocating.

Preferably, the outer protective sleeve is sleeved with a plurality of fixing pieces, one end of each fixing piece is sleeved on the outer protective sleeve, and the other end of each fixing piece is of a sucker structure. The sucking disc structure on the mounting can be fast with the cable fixed ground, wall or inside the equipment, need not to punch the operation, can easily fix the cable, prevents that the cable dislocation from removing.

Compared with the prior art, the beneficial effects of the utility model are that: the high-temperature resistant layer, the flame-retardant layer and the elastic tube are arranged in the cable, so that the flame-retardant performance of the cable can be effectively improved, the flame-retardant layer can limit combustion in a local range, spreading is avoided, other various devices are protected, and larger loss is avoided; meanwhile, the cable has small smoke amount during combustion, does not generate toxic and corrosive gases, and is very environment-friendly; the high-temperature resistant layer can effectively isolate heat generated during combustion of the flame-retardant layer; the elastic tube can protect the inner conductor from being damaged by external pressure, and prevent the inner conductor from being twisted and bent, so that the normal use of the cable is influenced.

Drawings

The following detailed description is made with reference to the accompanying drawings and embodiments of the present invention

FIG. 1 is a cross-sectional view of the structure of the present invention;

FIG. 2 is a schematic structural view of the present invention;

fig. 3 is an installation diagram of the present invention.

Labeled as: the cable comprises a conductor 1, a first insulating layer 2, a shielding layer 3, a high-temperature resistant layer 4, a flame-retardant layer 5, an elastic tube 6, a corrugated structure 61, a through hole 62, an outer protective sleeve 7, a reinforcing rib 71, an air hole 72, a torsion-resistant steel bar 8, a fixing piece 9 and a sucker structure 91.

Detailed Description

In the description of the present invention, it should be noted that, for the orientation words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and the positional relationship are indicated based on the orientation or the positional relationship shown in the drawings, and the description is only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or the element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present invention.

Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and as used in the description of the invention, the definition of "a plurality" or "a plurality" means two or more unless otherwise explicitly specified.

See the drawings. The halogen-free flame-retardant welding slag prevention cable is characterized in that a conductor 1 is arranged inside the cable, the conductor is formed by stranding a plurality of copper wires, a first insulating layer 2 is tightly wrapped outside the conductor, and the first insulating layer is made of cross-linked polyethylene; the 2 outsides on first insulating layer are equipped with shielding layer 3, and shielding layer 3 is woven by copper wire or tinned copper wire and is formed, can guarantee that the communication of cable is not influenced by external signal.

The high-temperature resistant layer 4 is arranged on the outer side of the shielding layer 3 and is made of ceramic fibers, so that heat generated during combustion of the flame-retardant layer can be effectively isolated; the outer side of the high temperature resistant layer 4 is provided with a flame retardant layer 5, the flame retardant layer is internally filled with a flame retardant, and the flame retardant can be aluminum hydroxide or magnesium hydroxide. When the cable burns, the flame retardant can react to release crystal water and reduce the flame temperature of the cable, thereby preventing the heat caused by the continuous combustion of the flame.

The outer side of the flame-retardant layer 5 is sleeved with an elastic tube 6, and the elastic tube is made of flame-retardant nylon, so that the flame retardant property of the cable is further improved. The pipe wall of the elastic pipe 6 is of a corrugated structure 61, the corrugations are arranged along the axial direction, and a plurality of through holes 62 are formed in the elastic pipe. The through hole on the elastic tube ensures that the air pressure inside and outside the elastic tube is kept consistent, and after the elastic tube is stressed and deformed, if the pressure disappears, the elastic tube can reset automatically, and cannot be in a shriveled state of negative pressure, thereby ensuring the normal use of the elastic tube. The corrugated structure on the elastic tube can effectively reduce the influence of pressure on the inner conductor, avoid the inner conductor from being distorted and bent, and ensure the normal use of the cable.

The inner wall and the outer wall of the elastic tube 6 are respectively connected with the flame-retardant layer 5 and the outer protective sleeve 7 and are fixed by adhesive. The inner wall and the outer wall of the elastic tube are both of corrugated structures and are fixed together with the flame-retardant layer and the outer protective sleeve through the adhesive, so that the elastic tube is prevented from moving and dislocating.

Outer protective sheath 7 adopts the polyurethane material, outer protective sheath is inside to be equipped with many resistance to torsion reinforcing bar 8, and resistance to torsion reinforcing bar can prevent the distortion of cable atress, guarantees the normal use of cable inner conductor. The outer side of the outer protective sleeve is provided with a convex reinforcing rib 71, and the outer protective sleeve is provided with a plurality of air holes 72. When the cable is dragged, the reinforcing ribs can prevent the outer protective sleeve from directly rubbing the ground, so that the service life of the outer protective sleeve is prolonged; the air holes in the outer protective sleeve can play a role in heat dissipation, so that the temperature of the cable is prevented from being too high.

For convenience of installation, the outer protective sleeve 7 can be sleeved with a plurality of fixing pieces 9, the fixing pieces are of detachable structures, one end of each fixing piece is sleeved on the outer protective sleeve, a rolled belt made of a nylon material can be adopted, and the other end of each fixing piece is of a sucker structure 91. The fixing part is installed at the proper position of the cable, namely the rolling belt is fixed on the outer protective sleeve, the cable can be quickly fixed on the ground, the wall surface or the inside of equipment by the aid of the sucker structure, punching operation is not needed, the cable can be easily fixed, and dislocation movement of the cable is prevented.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the fan belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that modifications and embellishments within the scope of the present disclosure may be made by those skilled in the art without departing from the principles of the present disclosure.

Claims

1. A halogen-free flame-retardant welding slag preventing cable is provided with a conductor inside, a first insulating layer wraps the outer side of the conductor, and a shielding layer is arranged on the outer side of the first insulating layer; the method is characterized in that: the outer side of the shielding layer is provided with a high-temperature resistant layer, the high-temperature resistant layer is made of ceramic fibers, the outer side of the high-temperature resistant layer is provided with a flame retardant layer, and a flame retardant is filled in the flame retardant layer; the outer side of the flame-retardant layer is sleeved with an elastic tube, the tube wall of the elastic tube is of a corrugated structure, and the elastic tube is made of flame-retardant nylon; the elastic tube outside is equipped with outer protective sheath, and outer protective sheath adopts the polyurethane material, outer protective sheath is inside to be equipped with many antitorque bent reinforcing bars.

2. The halogen-free flame-retardant slag-resistant cable according to claim 1, wherein: the flame retardant is aluminum hydroxide or magnesium hydroxide.

3. The halogen-free flame-retardant slag-resistant cable according to claim 1, wherein: the conductor is formed by stranding a plurality of copper wires, a first insulating layer is tightly wrapped on the outer side of the conductor, the first insulating layer is made of cross-linked polyethylene, and the shielding layer is formed by weaving copper wires or tinned copper wires.

4. The halogen-free flame-retardant welding slag-proof cable as claimed in claim 1, wherein: the ripples on the elastic tube are arranged along the axial direction, and a plurality of through holes are arranged on the elastic tube.

5. The halogen-free flame-retardant welding slag-proof cable as claimed in claim 1, wherein: the outer side of the outer protective sleeve is provided with a convex reinforcing rib, and the outer protective sleeve is provided with a plurality of air holes.

6. The halogen-free flame-retardant slag-resistant cable according to claim 1, wherein: the inner wall and the outer wall of the elastic tube are respectively connected with the flame-retardant layer and the outer protective sleeve and are fixed through an adhesive.

7. The halogen-free flame-retardant slag-resistant cable according to claim 1, wherein: the outer protective sleeve is sleeved with a plurality of fixing pieces, one end of each fixing piece is sleeved on the outer protective sleeve, and the other end of each fixing piece is of a sucker structure.