CN201229052Y

CN201229052Y - Multi-core skin-effect heat tracing device

Info

Publication number: CN201229052Y
Application number: CNU2008201145262U
Authority: CN
Inventors: 蔡锡荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-22
Filing date: 2008-05-22
Publication date: 2009-04-29
Anticipated expiration: 2018-05-22

Abstract

The utility model relates to a multichip skin effect heat tracing device, belonging to the field of skin effect heat tracing pipes, which solves the problems that a traditional heat tracing pipe is difficult to detect faults, and can not be suitable for weather and temperature changes. The multichip skin effect heat tracing device comprises a closed electric circuit formed by a power supply, a control cabinet and a heat tracing pipe, wherein the tracing pipe is formed by a steel pipe [2] and a plurality of cables [1] with insulating outer sleeves, wherein a plurality of cables [1] are penetrated into the steel pipe [2], and are electrically connected on one end, and the other ends of the cables [1] are used as an input electrode, and the other end of the steel pipe [2] is used as an output electrode. The utility model can easily detect faults, and can be suitable for the environment requirements with different weather or temperature changes.

Description

Multicore kelvin effect companion thermic devices

Technical field

The utility model relates to a kind of kelvin effect companion thermic devices, and especially a kind of center of heat tracing pipe is installed with the kelvin effect companion thermic devices of cable.

Background technology

Pipeline kelvin effect companion thermal technology is a kind of new metallic conduit heating means, its basic principle is: when alternating current through cable when the heat tracing pipe wall, under the effect of kelvin effect and kindred effect, electric current is not evenly to flow along tube wall, pass through but concentrate on the heat tracing pipe endosexine, under the effect of tube wall resistance, generate heat by electric current, through conduction the woven hose temperature is raise, and heat tracing pipe outer surface voltage, electric current are zero, self forms insulation system, and liquid is carried in pipeline safely and reliably.Because woven hose is accompanied heat, so this technology is widely used in the conveying of heat insulation liquid in pipeline.At present, widely used companion's thermic devices comprises the common closed-loop path of forming of the steel pipe of power supply, switch board and hollow, goes up electric current when the loop is logical, the electric current steel pipe of flowing through, since the kelvin effect of electric current, the steel pipe heating, outer surface insulation comes woven hose is heated as heat tracing pipe.The shortcoming of above-mentioned companion's thermic devices is: when companion's heater circuit breaks down, be difficult to detect.Because heat tracing pipe is directly switched on, the loop is simple, can not adjust power easily, is difficult to adapt to the needs of woven hose because of weather or variations in temperature simultaneously.

The utility model content

The utility model just provide a kind of easy to detect, power is easy to adjust, can adapt to the kelvin effect companion thermic devices of different weathers or variations in temperature needs.

The technical solution adopted in the utility model is: multicore kelvin effect companion thermic devices, it comprises the common closed electric loop that constitutes of power supply, switch board and heat tracing pipe, described heat tracing pipe is made of steel pipe and the some cables that have insulating coating, some cables penetrate in the steel pipe, and at one end be electrically connected, the cable other end is as input electrode, and the steel pipe other end is as output electrode.

Adopt technique scheme, electric current flows into from cable, flow out from steel pipe again, because the kelvin effect and the kindred effect of electric current, thereby make it possible to be the woven hose heating.When pipeline is very long or crooked, can adopt some joint heat tracing pipes to be serially connected according to the length or the crooked situation of pipeline, make the corresponding electrical connection mutually of inner lead, the outer surface of the some joint steel pipe serial connections and the woven hose that is laid in can reach the companion's heat to long or crooked woven hose.

For increasing electric conductivity, the heart yearn of described cable is the coating that copper cash is coated with nickel or tin or silver outward.

Detect for convenient, the heart yearn coating of described cable is coated with fiberglass braided layer, and the glass fibre textle layers is outward the fluoroplastic insulation layer, covers the copper wire braid outward, coats the insulating coating of fluoroplastic insulation layer again.Like this by the copper wire braid being detected the trouble point of finding cable.

Described cable can be 1-9, can reach optimum efficiency.

The cross-sectional area of described cable core can be: 3 square millimeters to 90 square millimeters, also make companion's heat reach optimum efficiency.

In sum, the beneficial effects of the utility model are: because the utility model adopts some cables are set in heat tracing pipe, can be according to actual needs when therefore using, adjust the size of power by switching the radical that uses cable in the pipe, can interiorly in a big way change thereby reach the current's intensity that heat tracing pipe is passed through, therefore can adapt to the needs of different weathers or variations in temperature.Simultaneously, when companion's heater circuit cable breaks down, can be by the copper wire braid being detected the trouble point of finding cable.

Description of drawings

Fig. 1 is the new heat tracing pipe schematic diagram of this practicality.

Fig. 2 is that the some joint serial connections of the utility model heat tracing pipe are used schematic diagram.

Fig. 3 is that A-A of Fig. 2 is to cutaway view.

Among the figure, 1, cable, 2, steel pipe, 3, the terminal connection box, 4, heat-insulation layer, 5, halfway junction box, 6, woven hose, 7, electric source connecting box.

The specific embodiment

The utility model multicore kelvin effect companion thermic devices, it comprises the common closed electric loop that constitutes of power supply, switch board and heat tracing pipe, heat tracing pipe is made of steel pipe 2 and the some cables 1 that have insulating coating, some cables 1 penetrate in the steel pipe 2, and at one end be electrically connected, cable 1 other end is as input electrode, and steel pipe 2 other ends are as output electrode.

The single-unit heat tracing pipe as shown in Figure 1, it comprises steel pipe 2, it also comprises the some cables 1 that have insulating coating, some cables 1 penetrate in the steel pipe 2.The cable of present embodiment is 3, and the heart yearn of cable 1 is made of the outer plating silver of copper core, and heart yearn outsourcing glass layer is surrounded by the fluoroplastic insulation layer in the outside of glass layer, and the coated copper wire textle layers coats the fluoroplastic insulation layer more again.

Fig. 2 is that the utility model more piece heat tracing pipe uses schematic diagram.It is made of three joint heat tracing pipe serial connections, is provided with halfway junction box 5 between every joint, and cable 1 can be electrically connected by the halfway junction box serial connection.Final section is electrically connected cable 1 and the hot steel pipe 2 of companion with terminal connection box 3.Be provided with electric source connecting box 7 at the first segment front end, make it to be electrically connected with power supply.Accompany the be laid in lateral surface of woven hose 6 of hot steel pipe 2 roads, as shown in Figure 3, outside the outside of woven hose 6, be covered with heat-insulation layer 4.When constituting the loop with power supply wiring, make electric current flow into from cable 1, flow out from steel pipe 2.

The utility model is kelvin effect and a kindred effect of utilizing electric current, can be widely used in the ramp on highway and airport, the deicing or snow melting in tunnel, is used for the deicing or snow melting of building end face.The field that also can be widely used in fields such as oil, metallurgy, chemical industry, fire-fighting needs on the overlength pipeline of tracing thermal-insulating.

Claims

1, multicore kelvin effect companion thermic devices, it comprises the common closed electric loop that constitutes of power supply, switch board and heat tracing pipe, it is characterized in that described heat tracing pipe is made of steel pipe [2] and the some cables [1] that have insulating coating, some cables [1] penetrate in the steel pipe [2], and at one end be electrically connected, cable [1] other end is as input electrode, and steel pipe [2] other end is as output electrode.

2, companion's thermic devices according to claim 1, the heart yearn that it is characterized in that described cable [1] are the coating that copper cash is coated with nickel or tin or silver outward.

3, companion's thermic devices according to claim 2 is characterized in that the heart yearn coating of described cable [1] is coated with fiberglass braided layer, and fiberglass braided layer is outer to be the fluoroplastic insulation layer, covers the copper wire braid outward, coats the insulating coating of fluoroplastic insulation layer again.

4, companion's thermic devices according to claim 3 is characterized in that described cable [1] is 1-9.

5,, it is characterized in that the cross-sectional area of described cable [1] heart yearn is: 3 square millimeters to 90 square millimeters according to claim 1 or 2 or 3 or 4 described companion's thermic devices.