CN201238402Y

CN201238402Y - Carbon fiber geothermal cable

Info

Publication number: CN201238402Y
Application number: CNU2008201875570U
Authority: CN
Inventors: 陈允瑞
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-08-08
Filing date: 2008-08-08
Publication date: 2009-05-13
Anticipated expiration: 2018-08-08

Abstract

The utility model provides a carbon fiber geothermal cable which comprises an inner core and an insulating sheath; the inner core consists of a carbon fiber bundle, conductive insulating layers, a conductive fireproof layer and a metal mesh which are connected together; the conductive insulating layers are arranged on the periphery of the carbon fiber bundle; the conductive fireproof layer is arranged on the periphery of the conducting insulating layer; the metal mesh is arranged on the periphery of the conductive fireproof layer; the insulating sheath is arranged on the periphery of the metal mesh. Carbon fiber serves as the heating material, so the heat efficiency is quite high; a plurality of conductive insulating layers are subsequently arranged on the periphery of the carbon fiber, so that the cable is characterized by high electric heat conversion rate, low energy consumption, good insulativity, strong extensibility, uniform radiating, fireproof, waterproof, corrosion resistance and the like; in addition, the cable also has the advantage of no electromagnetic interference, and is more environment-friendly.

Description

The carbon fiber Geothermal electric cable

Technical field

The utility model relates to a kind of heating installation, exactly is a kind of carbon fiber Geothermal electric cable.

Background technology

Along with science and technology development, the continuous progress of society, buildings such as increasing gymnasium, arenas appear among people's the life, and heating systems such as traditional heating installation, air-conditioning are because consumes energy is more and heating effect is inhomogeneous, therefore, can't satisfy the heating requirement of building.For addressing the above problem, people have designed geothermal system, bury in advance at below ground and put Geothermal electric cable, and be that surface temperature raise by the Geothermal electric cable liberated heat winter, reaches the purpose of heating.Initial Geothermal electric cable is to adopt the metal inner core, and the electric heating conversion ratio is lower, and energy consumption is bigger, and stronger to the electromagnetic interference of surrounding environment.At present, carbon fibre material has been widely used among the various Geothermal electric cables as the substitute of metal inner core.

Summary of the invention

The purpose of this utility model provides a kind of carbon fiber Geothermal electric cable, it adopts carbon fibre material to do exothermic material, the heat efficiency is higher, set gradually the multilayered thermally-conductive insulating barrier in the carbon fiber periphery again, can make that it has that electric heating conversion ratio height, energy consumption are low, good insulating, ductility are strong, heat radiation evenly, characteristics such as fire-proof and water-proof anticorrosion, and it also has the advantage of no electromagnetic interference, environmental protection more.

The utility model for achieving the above object, be achieved through the following technical solutions: the carbon fiber Geothermal electric cable comprises inner core and insulating sleeve, inner core is connected and composed by carbon fiber bundle, heat conductive insulating layer, heat conduction fireprotection layer and wire netting, the periphery of carbon fiber bundle is installed the heat conductive insulating layer, the periphery of heat conductive insulating layer is installed the heat conduction fireprotection layer, the periphery of heat conduction fireprotection layer is installed wire netting, and the periphery of wire netting is installed insulating sleeve.

In order further to realize the purpose of this utility model, can also be by the following technical solutions: the heat conductive insulating layer be made by poly-PTFE, and the thickness d 1 of heat conductive insulating layer is 0.1 to 0.8mm.The heat conduction fireprotection layer is by mica layer, and the thickness d 4 of heat conduction fireprotection layer is 0.08 to 0.2mm.Wire netting is made of copper, and the thickness d 2 of wire netting is 0.2 to 0.4mm.Insulating sleeve is made by the PVC plastics, and the thickness d 3 of insulating sleeve is 1.1 to 1.5mm.Between insulating sleeve and the wire netting cavity is set.

Advantage of the present utility model is: its reasonable in design, cheap for manufacturing cost, compared with similar products, have advantages such as caloric value is big, energy consumption is low, good insulating, ductility is strong, heat radiation is even, fire-proof and water-proof anticorrosion, can satisfy the heating demand in the various buildings.

Description of drawings

Fig. 1 is the utility model structural representation; Fig. 2 is that the A-A of Fig. 1 analyses and observe the structure for amplifying schematic diagram; Fig. 3 is that the A-A of Fig. 1 analyses and observe the structure for amplifying schematic diagram.

Number in the figure: 1 carbon fiber bundle, 2 heat conductive insulating layers, 3 insulating sleeve, 4 heat conduction fireprotection layers, 5 wire nettings, 6 gaps, 7 cavitys.

Embodiment

As shown in Figure 1, carbon fiber Geothermal electric cable described in the utility model comprises inner core and insulating sleeve 3, inner core is connected and composed by carbon fiber bundle 1, heat conductive insulating layer 2, heat conduction fireprotection layer 4 and wire netting 5, the periphery of carbon fiber bundle 1 is installed heat conductive insulating layer 2, the periphery of heat conductive insulating layer 2 is installed heat conduction fireprotection layer 4, the periphery of heat conduction fireprotection layer 4 is installed wire netting 5, and the periphery of wire netting 5 is installed insulating sleeve 3.Carbon fiber bundle 1 is made up of several carbon fibers, has stronger electric heating conversion capability, and the light weight volume is little, and has stronger ductility, makes the performance of Geothermal electric cable more superior.

As shown in Figure 2, heat conductive insulating layer 2 can be made by poly-PTFE, the heat conductivility of poly-tetrafluoro is better, and insulation property are superior, and the thermal conductivity of heat conductive insulating layer 2 reduces along with the increase of thickness, and its insulating properties rises along with the increase of thickness, learn that through experiment when the thickness d 1 of heat conductive insulating layer 2 was 0.1 to 0.8mm, the heat conductivility of heat conductive insulating layer 2 and insulation property all reached optimum value.

Heat conduction fireprotection layer 4 can be by mica layer, mica material has higher fire protecting performance, can prevent effectively that Geothermal electric cable from taking place because of the phenomenon of the too high initiation fire of internal temperature, the heat conductivility of mica is relatively low, and the manufacturing cost of mica layer is higher, the experiment proved that, when the thickness d 4 of heat conduction fireprotection layer 4 was 0.08 to 0.2mm, fire prevention and heat conductivility were best.Heat conduction fireprotection layer 4 can be the structure of closure as shown in Figure 2, it also can be non-as shown in Figure 3 closing structure, non-closing structure compare with closing structure insulation property slightly a little less than, but, because existing processing technology, the mica layer processing cost of making structure is too high, therefore, all adopts the mica layer of non-closed structure usually.6 is gaps that lap place, mica layer two ends exists among the figure, and gap 6 is the most weak positions of insulating properties on the mica layer.

Wire netting 5 can be made of copper, and wire netting 5 made of copper has good electromagnetic shielding action, but because the costing an arm and a leg of copper, and therefore, when the thickness d 2 of wire netting 5 is controlled at 0.2 to 0.4mm, can both reduce cost, and can reach effectiveness preferably again.

Insulating sleeve 3 can be made by the PVC plastics, make insulating sleeve 3 have heat conduction preferably, insulation, waterproof and anti-wear performance, for insulating sleeve 3 is being possessed under the prerequisite of above-mentioned performance, reduce the quality and the volume of insulating sleeve 3, the thickness d 3 of insulating sleeve 3 can be 1.1 to 1.5mm.

As shown in Figure 3, between insulating sleeve 3 and the wire netting 5 cavity 7 can be set, be insulating sleeve 3 with wire netting 5 between generally do not contact, can make the leeway of leaving relative motion between the inner core that connects and composes by carbon fiber bundle 1, heat conductive insulating layer 2, heat conduction fireprotection layer 4 and wire netting 5 and the insulating sleeve 3, when Geothermal electric cable bends, can prevent to take place between insulating sleeve 3 and the inner core friction effectively and cause inner core to damage.

The utility model not technology contents of detailed description is known technology.

Claims

1, carbon fiber Geothermal electric cable, it is characterized in that: comprise inner core and insulating sleeve (3), inner core is connected and composed by carbon fiber bundle (1), heat conductive insulating layer (2), heat conduction fireprotection layer (4) and wire netting (5), the periphery of carbon fiber bundle (1) is installed heat conductive insulating layer (2), the periphery of heat conductive insulating layer (2) is installed heat conduction fireprotection layer (4), the periphery of heat conduction fireprotection layer (4) is installed wire netting (5), and the periphery of wire netting (5) is installed insulating sleeve (3).

2, carbon fiber Geothermal electric cable according to claim 1 is characterized in that: heat conductive insulating layer (2) is made by poly-PTFE, and the thickness d 1 of heat conductive insulating layer (2) is 0.1 to 0.8mm.

3, carbon fiber Geothermal electric cable according to claim 1 is characterized in that: heat conduction fireprotection layer (4) is by mica layer, and the thickness d 4 of heat conduction fireprotection layer (4) is 0.08 to 0.2mm.

4, carbon fiber Geothermal electric cable according to claim 1 is characterized in that: wire netting (5) is made of copper, and the thickness d 2 of wire netting (5) is 0.2 to 0.4mm.

5, carbon fiber Geothermal electric cable according to claim 1 is characterized in that: insulating sleeve (3) is made by the PVC plastics, and the thickness d 3 of insulating sleeve (3) is 1.1 to 1.5mm.

6, according to each described carbon fiber Geothermal electric cable in the claim 1 to 5, it is characterized in that: between insulating sleeve (3) and the wire netting (5) cavity (7) is set.