CN209343809U - Crosslinked polyetylene insulated frequency-changing cable - Google Patents

Abstract

The utility model relates to a kind of crosslinked polyetylene insulated frequency-changing cables, it includes conductor, inner insulating layer is equipped with outside the conductor, insulation screen is equipped with outside the inner insulating layer, external insulation layer is equipped with outside the insulation screen, polyurethane foam is equipped with outside the external insulation layer, shielding layer of copper wires is equipped with outside the polyurethane foam, they form conductive body, it is tangent outside the conductive body to be equipped with middle core ontology, filled layer is equipped with outside the conductive body, Ceramic silicon rubber belt is equipped with outside the filled layer, wear-resistant layer is equipped with outside the Ceramic silicon rubber belt, restrictive coating is equipped with outside the wear-resistant layer.The utility model insulating properties and electromagnetic shielding performance are good, and high mechanical strength is wear-resistant, environmental protection.

Description

Crosslinked polyetylene insulated frequency-changing cable

Technical field

The utility model relates to a kind of cables, and in particular to a kind of insulated cable.

Background technique

With the rapid development of the national economy, the wire and cable as national economy aorta, dosage and use scope It is increasing.In recent years, the industries such as power plant, substation, smelting and petrochemical industry, it is very big to the demand of cable.Existing For industrial circle, electrical control uses a large amount of vulnerabilities scan.And the power supply changed due to the provision of frequency, the electric field of variation Changing magnetic field will be generated in transmission process, alternately the electromagnetic field of variation will cause shadow to peripheral weak current equipment in this way It rings, the referred to as environmental pollution of electromagnetic wave.This requires medium voltage converter cables to have good electromagnetic shielding performance.

Summary of the invention

Goal of the invention: the purpose of this utility model is to overcome deficiency in the prior art, provide a kind of insulating properties and Electromagnetic shielding performance is good, and high mechanical strength is wear-resistant, environmentally friendly crosslinked polyetylene insulated frequency-changing cable.

Technical solution: in order to solve the above-mentioned technical problem, crosslinked polyetylene insulated frequency-changing cable described in the utility model, It includes conductor, and inner insulating layer is equipped with outside the conductor, insulation screen is equipped with outside the inner insulating layer, described It is equipped with external insulation layer outside insulation screen, polyurethane foam is equipped with outside the external insulation layer, in the polyurethane foam Shielding layer of copper wires is equipped with outside foam layer, they form conductive body, and it is tangent outside the conductive body to be equipped with middle core ontology, It is equipped with filled layer outside the conductive body, Ceramic silicon rubber belt is equipped with outside the filled layer, in the ceramics It is equipped with wear-resistant layer outside SiClx rubber belt, restrictive coating is equipped with outside the wear-resistant layer, the middle core ontology is bare copper wire Conductor.

The inner insulating layer and external insulation layer are all cross-linked polyethylene layers.

The wear-resistant layer is mixed by the polyolefin that mass ratio is 1:5 and methyl trialkoxysilane.

The utility model has the advantages that the utility model is compared with prior art, remarkable advantage is: the utility model structure setting is closed Reason, Integral sealing are insulated using inside and outside two layers, make good insulation preformance, middle core ontology is in contact with shielding layer of copper wires, into one Step improves insulation performance, while having excellent electromagnetic shielding performance, can be effectively improved the accumulation multiple for inhibiting operating voltage, Prevent the environmental pollution of electromagnetic wave, can safely, effectively, energy-efficient transmission variable-frequency power sources, use by mass ratio as the polyene of 1:5 The wear-resistant layer that hydrocarbon and methyl trialkoxysilane are mixed, effectively improves overall wear resistance, and the utility model passes through each layer It is used cooperatively, runs smoothly reliable, flame-proof environmental protection meets actual operation requirements.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model.

Specific embodiment

The utility model is further described with reference to the accompanying drawings and examples.

As shown in Figure 1, crosslinked polyetylene insulated frequency-changing cable described in the utility model, it includes conductor 1, is led described It is equipped with inner insulating layer 2 outside body 1, insulation screen 3 is equipped with outside the inner insulating layer 2, outside the insulation screen 3 Equipped with external insulation layer 4, the inner insulating layer 2 and external insulation layer 4 are all cross-linked polyethylene layers, are set outside the external insulation layer 4 There is polyurethane foam 5, shielding layer of copper wires 6 is equipped with outside the polyurethane foam 5, they form conductive body, in institute It is tangent equipped with middle core ontology 7 to state conductive body outside, filled layer 8 is equipped with outside the conductive body, in the filled layer 8 Outside is equipped with Ceramic silicon rubber belt 9, and wear-resistant layer 10, the wear-resistant layer are equipped with outside the Ceramic silicon rubber belt 9 10 are mixed by the polyolefin that mass ratio is 1:5 and methyl trialkoxysilane, and sheath is equipped with outside the wear-resistant layer 10 Layer 11, the middle core ontology 7 are bare copper wire conductor.The utility model structure setting is reasonable, Integral sealing, using inside and outside two Layer insulation, makes good insulation preformance, middle core ontology is in contact with shielding layer of copper wires, further increases insulation performance, have simultaneously Excellent electromagnetic shielding performance can be effectively improved the accumulation multiple for inhibiting operating voltage, prevent the environmental pollution of electromagnetic wave, energy Enough safely, effectively, energy-efficient transmission variable-frequency power sources, uses and is mixed by mass ratio for the polyolefin of 1:5 and methyl trialkoxysilane Wear-resistant layer made of closing effectively improves overall wear resistance, and the utility model is used cooperatively by each layer, runs smoothly reliable, Flame-proof environmental protection meets actual operation requirements.

The utility model provides a kind of thinking and method, and there are many method and the approach for implementing the technical solution, with It is only preferred embodiments of the present invention described in upper, it is noted that for those skilled in the art, Without departing from the principle of this utility model, several improvements and modifications can also be made, these improvements and modifications should also regard For the protection scope of the utility model, all undefined components in this embodiment can be implemented in the prior art.

Claims (3)

1. crosslinked polyetylene insulated frequency-changing cable, it is characterised in that: it includes conductor (1), is equipped with outside the conductor (1) interior Insulating layer (2) is equipped with insulation screen (3) outside the inner insulating layer (2), is equipped with outside the insulation screen (3) External insulation layer (4) is equipped with polyurethane foam (5) outside the external insulation layer (4), the polyurethane foam (5) outside Portion is equipped with shielding layer of copper wires (6), they form conductive body, tangent outside the conductive body to be equipped with middle core ontology (7), Filled layer (8) are equipped with outside the conductive body, are equipped with Ceramic silicon rubber belt (9) outside the filled layer (8), Wear-resistant layer (10) are equipped with outside the Ceramic silicon rubber belt (9), are equipped with restrictive coating (11) outside the wear-resistant layer (10), The middle core ontology (7) is bare copper wire conductor.

2. crosslinked polyetylene insulated frequency-changing cable according to claim 1, it is characterised in that: the inner insulating layer (2) and External insulation layer (4) is all cross-linked polyethylene layer.

3. crosslinked polyetylene insulated frequency-changing cable according to claim 1, it is characterised in that: the wear-resistant layer (10) is by matter Amount is mixed than the polyolefin and methyl trialkoxysilane for being 1:5.