阅读说明：本技术 一种交联聚乙烯绝缘聚烯烃护套无卤低烟阻燃电力电缆 (Crosslinked polyethylene insulation polyolefin sheath halogen-free low-smoke flame-retardant power cable ) 是由 范鑫 范家铭 于 2020-05-21 设计创作，主要内容包括：本发明涉及电力电缆技术领域,尤其是一种交联聚乙烯绝缘聚烯烃护套无卤低烟阻燃电力电缆,包括支撑柱,所述支撑柱固定设有填充层,所述填充层固定设有多个缆芯,所述填充层等角度固定设有加强条,所述填充层固定设有第一防水层,多个所述支撑四棱台固定设有第二防水层,所述第二防水层固定设有编织屏蔽层,所述编织屏蔽层固定设有加强层,所述加强层固定设有无卤低烟内护套层,所述无卤低烟内护套层固定设有隔热层,所述隔热层固定设有无卤低烟阻燃护套层。本发明在普通电力电缆的基础上,设置了水冷装置和无卤低烟等材料,提高了散热效果和强度,具有广阔的市场前景,适合推广。(The invention relates to the technical field of power cables, in particular to a cross-linked polyethylene insulation polyolefin sheath halogen-free low-smoke flame-retardant power cable which comprises a support column, wherein a filling layer is fixedly arranged on the support column, a plurality of cable cores are fixedly arranged on the filling layer, reinforcing strips are fixedly arranged on the filling layer at equal angles, a first waterproof layer is fixedly arranged on the filling layer, a second waterproof layer is fixedly arranged on a plurality of support quadrangular frustum pillars, a braided shielding layer is fixedly arranged on the second waterproof layer, a reinforcing layer is fixedly arranged on the braided shielding layer, a halogen-free low-smoke inner sheath layer is fixedly arranged on the reinforcing layer, a heat insulation layer is fixedly arranged on the low-smoke halogen-free inner sheath layer, and a low-smoke halogen-. On the basis of a common power cable, the water cooling device and halogen-free low-smoke materials are arranged, so that the heat dissipation effect and strength are improved, the cable has a wide market prospect, and is suitable for popularization.)

1. The utility model provides a there is not steamed low fire-retardant power cable of cigarette of crosslinked polyethylene insulation polyolefin sheath, includes support column (1), its characterized in that, the fixed surface of support column (1) is equipped with filling layer (2), angular fixings such as filling layer (2) are equipped with a plurality of cable cores (3), cable core (3) are including wire (301), the fixed surface of wire (301) is equipped with crosslinked polyethylene insulating layer (302), the fixed surface of crosslinked polyethylene insulating layer (302) is equipped with inner shield layer (303), the surface and filling layer (2) fixed connection of inner shield layer (303), angular fixings such as filling layer (2) are equipped with enhancement strip (4), the fixed surface of filling layer (2) is equipped with first waterproof layer (5), angular fixings such as surface of first waterproof layer (5) are equipped with four prismatic table (6) of a plurality of supports, it is a plurality of support four arriss platforms (6) and keep away from one side of first waterproof layer (5) and fix and be equipped with second waterproof layer (7), the fixed surface of second waterproof layer (7) is equipped with and weaves shielding layer (8), the fixed surface of weaving shielding layer (8) is equipped with enhancement layer (9), the fixed surface of enhancement layer (9) is equipped with halogen-free low smoke inner sheath layer (11), the fixed surface of halogen-free low smoke inner sheath layer (11) is equipped with insulating layer (13), the fixed surface of insulating layer (13) is equipped with halogen-free low smoke flame retardant sheath layer (14).

2. The halogen-free low-smoke flame-retardant power cable with the cross-linked polyethylene insulating polyolefin sheath as claimed in claim 1, wherein the supporting quadrangular frustum (6) is made of rubber material with higher hardness, and cavities are formed inside the supporting quadrangular frustum (6).

3. The halogen-free low-smoke flame-retardant power cable with the cross-linked polyethylene insulating polyolefin sheath as claimed in claim 1, wherein the reinforcing layer (9) is provided with a plurality of reinforcing steel wires (10) at equal angles, and the reinforcing steel wires (10) are galvanized steel wires with the diameter and the length of 2 mm.

4. The cross-linked polyethylene insulation polyolefin sheath halogen-free low-smoke flame-retardant power cable according to claim 1, characterized in that the contact surface of the halogen-free low-smoke inner sheath layer (11) and the heat insulation layer (13) is provided with a plurality of tooth grooves (12).

5. The halogen-free low-smoke flame-retardant power cable with the cross-linked polyethylene insulating polyolefin sheath according to claim 1, characterized in that a water cooling channel is formed among the first waterproof layer (5), the plurality of supporting quadrangular frustum pyramid (6) and the second waterproof layer (7).

6. A cross-linked polyethylene insulated polyolefin sheathed halogen-free low-smoke flame retardant power cable according to claim 1, characterized in that the filler layer (2) is made of alkali-free glass fiber material.

7. A cross-linked polyethylene insulated polyolefin sheathed halogen-free low-smoke flame retardant power cable according to claim 1, characterized in that the thermal insulation layer (13) is made of halogen-free polyolefin material.

8. The halogen-free low-smoke flame-retardant power cable with the cross-linked polyethylene insulating polyolefin sheath as claimed in claim 1, wherein the first waterproof layer (5) and the second waterproof layer (7) are both made of waterproof rubber materials, and epoxy resin with hydrophobic property is coated on the surfaces of the first waterproof layer (5) and the second waterproof layer (7).

9. The cross-linked polyethylene insulation polyolefin sheath halogen-free low-smoke flame-retardant power cable according to claim 1, characterized in that the braided shielding layer (8) is braided by tinned copper wire and aramid yarn.

Technical Field

The invention relates to the technical field of power cables, in particular to a cross-linked polyethylene insulated polyolefin sheath halogen-free low-smoke flame-retardant power cable.

Background

With the development and progress of the society in China, buildings such as high-rise buildings, large shopping malls and the like are continuously increased, the power consumption is continuously improved, and if low-voltage power supply is adopted, great investment is needed in the cable consumption, the laying and installation workload, the laying space consumption and the like, so that the gradual adoption of medium-voltage power supply to reduce the cost is a necessary trend in the development of the power industry. In recent years, in order to improve the safety level of an electric circuit and reduce the occurrence and loss of electric fire accidents, the national ministry of construction, the ministry of public security and some local governments have successively provided some electric design specifications, and low-smoke halogen-free cables have the advantages of small smoke density during combustion, high light transmittance, emission of halogen-free acid gas, no harmful by-products and the like, so the low-smoke halogen-free cables are widely applied.

Disclosure of Invention

The invention aims to solve the defects of poor heat dissipation effect and low strength in the prior art, and provides a cross-linked polyethylene insulated polyolefin sheath halogen-free low-smoke flame-retardant power cable.

In order to achieve the purpose, the invention adopts the following technical scheme:

design a there is not steamed low fire-retardant power cable of cigarette of crosslinked polyethylene insulating polyolefin sheath, including the support column, the fixed surface of support column is equipped with the filling layer, angular fixity such as filling layer is equipped with a plurality of cable cores, the cable core includes the wire, the fixed surface of wire is equipped with the crosslinked polyethylene insulating layer, the fixed surface of crosslinked polyethylene insulating layer is equipped with the internal shield layer, the surface and the filling layer fixed connection of internal shield layer, angular fixity such as filling layer are equipped with the reinforcing bar, the fixed surface of filling layer is equipped with the first waterproof layer, the fixed surface such as surface of first waterproof layer is equipped with a plurality of support four prismatic tables, and a plurality of one side that the first waterproof layer was kept away from to the support four prismatic tables is fixed and is equipped with the second waterproof layer, the fixed surface of second waterproof layer is equipped with weaves the shielding layer, the fixed surface that weaves the, the fixed surface of enhancement layer is equipped with there is not steamed low cigarette inner sheath layer, there is not steamed low cigarette inner sheath layer's fixed surface is equipped with the insulating layer, the fixed surface of insulating layer is equipped with steamed low cigarette fire-retardant restrictive coating.

Preferably, the supporting quadrangular frustum pyramid is made of a rubber material with higher hardness, and cavities are formed in the supporting quadrangular frustum pyramid.

Preferably, the reinforcing layer is fixedly provided with a plurality of reinforcing steel wires at equal angles, and the reinforcing steel wires are galvanized steel wires with the diameter and the length of 2 mm.

Preferably, the surface that does not have steamed low smoke inner sheath layer and insulating layer and contact is equipped with a plurality of tooth's sockets.

Preferably, a water cooling channel is formed among the first waterproof layer, the plurality of supporting quadrangular frustum pyramid and the second waterproof layer.

Preferably, the filling layer is made of an alkali-free glass fiber material.

Preferably, the heat insulation layer is made of a halogen-free polyolefin material.

Preferably, the first waterproof layer and the second waterproof layer are both made of waterproof rubber materials, and epoxy resin with hydrophobic property is coated on the surfaces of the first waterproof layer and the second waterproof layer.

Preferably, the braided shielding layer is formed by braiding tinned copper wires and aramid yarns.

The invention provides a cross-linked polyethylene insulated polyolefin sheath halogen-free low-smoke flame-retardant power cable which has the beneficial effects that: the invention can effectively improve the strength of the invention by arranging the reinforcing strips, the reinforcing layers and the reinforcing steel wires, can effectively reduce the temperature and prolong the service life of the invention by arranging the first waterproof layer and the second waterproof layer which are made of waterproof rubber materials and coating epoxy resin with hydrophobic property on the surfaces of the first waterproof layer and the second waterproof layer, can effectively prevent the water leakage phenomenon during the water cooling work, and simultaneously is matched with the supporting quadrangular frustum with cavities arranged inside to prevent the invention from blocking the circulation of cooling water when being extruded, improves the heat insulation, shock resistance and fire resistance of the invention by arranging the heat insulation layer made of halogen-free polyolefin material, and forms a plurality of cavities between the halogen-free low-smoke inner sheath layer and the heat insulation layer by arranging a plurality of tooth sockets on the surface of the halogen-free low-smoke inner sheath layer, the invention further reduces the introduction of heat, avoids the generation of a large amount of smoke and toxic and harmful gases due to combustion when a fire accident happens by adopting various halogen-free low-smoke flame-retardant materials, and improves the safety.

Drawings

FIG. 1 is a partial front view of a cross-linked polyethylene insulated polyolefin sheathed halogen-free low-smoke flame-retardant power cable according to the present invention;

fig. 2 is a cross-sectional view of a cross-linked polyethylene insulated polyolefin sheath halogen-free low-smoke flame-retardant power cable provided by the invention.

In the figure: the cable comprises a support column 1, a filling layer 2, a cable core 3, a reinforcing strip 4, a first waterproof layer 5, a support rectangular frustum 6, a second waterproof layer 7, a woven shielding layer 8, a reinforcing layer 9, a reinforcing steel wire 10, a halogen-free low-smoke inner sheath layer 11, a tooth socket 12, a heat insulation layer 13, a halogen-free low-smoke flame-retardant sheath layer 14, a wire 301, a crosslinked polyethylene insulating layer 302 and an inner shield layer 303.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-2, a cross-linked polyethylene insulation polyolefin sheath halogen-free low-smoke flame-retardant power cable comprises a support column 1, a filler layer 2 is fixedly arranged on the surface of the support column 1, a plurality of cable cores 3 are fixedly arranged at equal angles on the filler layer 2, each cable core 3 comprises a wire 301, a cross-linked polyethylene insulation layer 302 is fixedly arranged on the surface of the wire 301, an inner shielding layer 303 is fixedly arranged on the surface of the cross-linked polyethylene insulation layer 302, the surface of the inner shielding layer 303 is fixedly connected with the filler layer 2, reinforcing strips 4 are fixedly arranged at equal angles on the filler layer 2, a first waterproof layer 5 is fixedly arranged on the surface of the filler layer 2, a plurality of supporting quadrangular frustum frames 6 are fixedly arranged at equal angles on the surface of the first waterproof layer 5, a second waterproof layer 7 is fixedly arranged on one side of the plurality of supporting quadrangular frustum frames 6 away from the first waterproof layer 5, a braided shielding layer 8 is fixedly arranged on the, the fixed surface of enhancement layer 9 is equipped with zero halogen low smoke inner sheath layer 11, and the fixed surface of zero halogen low smoke inner sheath layer 11 is equipped with insulating layer 13, and the fixed surface of insulating layer 13 is equipped with zero halogen low smoke flame retardant sheath layer 14.

Referring to fig. 1-2, a cross-linked polyethylene insulation polyolefin sheath halogen-free low-smoke flame-retardant power cable, a supporting rectangular table 6 is made of rubber materials with higher hardness, cavities are arranged inside the supporting rectangular table 6, the circulation of cooling water can be prevented from being blocked when the power cable is extruded, a plurality of reinforcing steel wires 10 are fixedly arranged on a reinforcing layer 9 at equal angles, the reinforcing steel wires 10 are galvanized steel wires with the diameter and the length of 2mm, the strength of the power cable is effectively improved, a plurality of tooth grooves 12 are arranged on the surface of a halogen-free low-smoke inner sheath layer 11, which is in contact with a heat insulation layer 13, so that a plurality of cavities are formed between the halogen-free low-smoke inner sheath layer 11 and the heat insulation layer 13, and the heat.

Referring to fig. 1-2, a cross-linked polyethylene insulation polyolefin sheath halogen-free low-smoke flame-retardant power cable, a first waterproof layer 5, a plurality of supporting quadrangular frustum pyramid 6 and a second waterproof layer 7 form a water cooling channel, a filling layer 2 is made of alkali-free glass fiber material, a heat insulation layer 13 is made of halogen-free polyolefin material, so that the heat insulation, shock-proof buffering and fire resistance of the power cable are improved, the first waterproof layer 5 and the second waterproof layer 7 are both made of waterproof rubber material, epoxy resin with hydrophobic property is coated on the surfaces of the first waterproof layer 5 and the second waterproof layer 7, the power cable can effectively reduce temperature, prolong the service life and effectively prevent water leakage during water cooling work, a braided shielding layer 8 is braided by tinned copper wire and aramid yarn, the power cable adopts a plurality of halogen-free low-smoke flame-retardant materials, when a fire accident happens, a large amount of smoke and toxic and harmful gases generated by combustion are avoided, and the safety is improved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.