CN2571110Y

CN2571110Y - Abruption-proof temperature self-limiting heating cable

Info

Publication number: CN2571110Y
Application number: CN 02267117
Authority: CN
Inventors: 尹宝信
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-09-13
Filing date: 2002-09-13
Publication date: 2003-09-03
Anticipated expiration: 2012-09-13

Abstract

The utility model relates to an abruption-proof temperature self-limiting heating cable. The heating power of the cable is in direct proportion to the length of the cable, and the length is arbitrarily intercepted. The utility model has the characteristics that the heating power of any section is reduced to follow the increase of the temperature, the heating power of the section tends to zero when the temperature achieves a definite value, and a broken circuit which results from the crack of a concrete body is effectively prevented. The cable is on a center line body and enwinds two conducting core lines according to the same thread interval and a spiral direction, and two conducting core lines are kept at definite interval. Semiconductor high polymer which is coated as a resistor heating body is full between the conducting core lines and the outer part of the center line body which enwinds the conducting core lines. The outer part of the resistor heating body is coated by insulation, and the outer part of the insulation is coated by a metal screen protection net. The outer part of the metal screen protection net is coated by an insulating sheath to be made. The abruption-proof temperature self-limiting heating cable can be used for each field of heating for a building, ice removal for a road surface place, heating for a car seat, etc.

Description

Anti-breaking from limitting warm heating cable

Under technical field the utility model relate to a kind of heating power be directly proportional with length and can intercept random length anti-ly break oneself and limit warm heating cable.The heating power that this cable not only has an any section reduces with the rising of temperature, and when temperature reaches a certain numerical value, the heating power of this section will trend towards zero characteristics, and can prevent because of opening circuit that concrete body crack causes.Should anti-break, can be widely used in numerous areas such as building and heating, the deicing of place, road surface, automotive seat heating and plantation heating from limitting warm heating cable to be particularly suitable for being arranged in ceiling, body of wall and the ground concrete body.

Background technology is present, and the common temperature of limit certainly heating cable is to be made of straight conductive core line, semiconductor high molecular polymer, insulation, shielding and sheath mostly.These heating cable often are laid in the concrete body, and concrete is known from experience the generation crack sometimes, and cable is broken.Because heating cable is laid in the concrete, repairs difficulty, often cause the tremendous economic loss.

Summary of the invention the utility model provides a kind of anti-breaking from limitting warm heating cable, and this cable adopts the semiconductor high molecular polymer as resistance heating body, utilizes the heating of infrared ray low-temp radiating principle, can shielding electromagnetic wave.Particularly this cable heating power of not only having an any section reduces with the rising of temperature, when temperature reaches a certain numerical value, the heating power of this section will trend towards zero characteristics, and this heating cable adopts spiral conductive core line, can effectively prevent because of opening circuit that concrete body crack causes.

The technical solution adopted in the utility model is: on a center line body, twine two conductive core lines according to same pitch and the hand of spiral, two conductive core lines should be half of pitch along the distance of center line body axis direction; Between conductive core line and twine the external filling of center line of conductive core line and parcel semiconductor high molecular polymer with ptc characteristics as resistance heater; Insulate in the resistance heater outsourcing; Insulation kalamein shielding protection net; Metallic shield catch net outsourcing insulating sleeve.In the utility model, the center line body can be cylinder, oval cylinder, rectangular fillet cylinder or other cylinder; The center line body can adopt insulating material or have the semiconductor high molecular polymer manufacturing of ptc characteristics; Conductive core line can be circle line or lenticular wire, sub-thread, two strands or multiply; When the center line body adopted the semiconductor high molecular polymer with ptc characteristics to make, the center line body can doublely be done resistance heater, and can omit with the external filling of center line of twining conductive core line and the semiconductor high molecular polymer of parcel this moment between conductive core line.

During use, anti-the breaking from two conductive core lines limitting warm heating cable one end to carry out insulation, the cable other end of the utility model connect power supply, constitute the resistance heating loop.When anti-breaking from limitting warm heating cable to be laid in the concrete body with the utility model, the crack takes place and during the stretching heating cable in the concrete body, since this is anti-break from the conductive core line of limitting warm heating cable in the shape of a spiral shape, enough big elongation surplus is arranged, so can prevent from effectively to break.

Description of drawings further specifies the utility model below in conjunction with drawings and Examples.

Fig. 1 is a perspective view of the present utility model.

Fig. 2 is a circuit theory schematic diagram of the present utility model.Among the figure: 1. center line body, 2. conductive core line, 3. resistance heater, 4. insulation, 5. metallic shield catch net, 6. insulating sleeve.R among Fig. 2 represents the anti-resistance of limitting a micro unit section of warm heating cable certainly of breaking of the utility model.

It is the perspective view of the utility model embodiment that embodiment illustrates shown in Figure 1, and when the resistance of its conductive core line was ignored, whole cable can be regarded the parallel connection of numerous micro unit section as, and Fig. 2 is its circuit theory schematic diagram.Present embodiment adopts insulating material such as resistant to elevated temperatures crosslinked polyethylene, silicon rubber, polyamide or fluoroplastics to manufacture center line body (1) and insulation (4); Adopt sub-thread or multiply tinned wird etc. as conductive core line (2); Adopting switch temperature is that the semiconductor high molecular polymer of 150 ℃, 105 ℃ and 55 ℃ is made resistance heater (3), this semiconductor high molecular polymer with ptc characteristics is made through fully stirring, fusion by inclined to one side difluoro vinyon, polyamide and vinyon adding an amount of carbon black or short carbon fiber, the performance of its performance decision resistance heater (3); Adopt braided metal shielding protection nets (5) such as tinned copper wire, chromium plating steel wire or stainless steel wire; Adopt igelite or electro-insulating rubber etc. to manufacture insulating sleeve (6).

Claims

1. anti-breaking limit warm heating cable certainly; with semiconductor high molecular polymer with ptc characteristics as resistance heater; insulate in the resistance heater outsourcing; insulation kalamein shielding protection net; metallic shield catch net outsourcing insulating sleeve, it is characterized in that: conductive core line is present in the cable in a spiral manner.

2. anti-breaking according to claim 1 from limitting warm heating cable, it is characterized in that: two conductive core lines are wrapped on the same center line body, two conductive core lines should be half of pitch along the distance of center line body axis direction, between conductive core line and twine the external filling of center line of conductive core line and the parcel semiconductor high molecular polymer with ptc characteristics as resistance heater.

3. according to claim 1 and 2 described anti-breaking from limitting warm heating cable, it is characterized in that: the center line body can adopt insulating material or have the semiconductor high molecular polymer manufacturing of ptc characteristics.

4. according to claim 1 and 2 described anti-breaking, it is characterized in that: adopt the center line body of semiconductor high molecular polymer manufacturing can doublely do resistance heater with ptc characteristics from limitting warm heating cable.

5. according to claim 1 and 2 described anti-breaking from limitting warm heating cable, it is characterized in that: the center line body can be cylinder, oval cylinder or other cylinder.

6. according to claim 1 and 2 described anti-breaking from limitting warm heating cable, it is characterized in that: conductive core line can be circle line or lenticular wire, sub-thread, two strands or multiply.

7. according to claim 1 and 2 described anti-breaking from limitting warm heating cable, it is characterized in that: two conductive core lines are wrapped on the insulated wire body according to the same pitch and the hand of spiral.