CN112351531A

CN112351531A - Combined self-temperature-limiting electric tracing band

Info

Publication number: CN112351531A
Application number: CN202011242508.4A
Authority: CN
Inventors: 李贻连; 卜基峰; 姚月凤
Original assignee: Anbang Electric Group Co ltd
Current assignee: Anbang Electric Group Co ltd
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2021-02-09
Anticipated expiration: 2040-11-09
Also published as: CN112351531B

Abstract

The invention relates to a combined self-temperature-limiting electric tracing band, which belongs to the technical field of electric tracing band products and comprises a tracing band body, wherein the tracing band body comprises a plurality of core wires arranged along the width direction, the length direction of the core wires is parallel to the length direction of the tracing band body, and the outer sides of the core wires are wrapped with external insulating layers; a shielding layer is arranged on the outer side of the external insulating layer, and a protective layer is arranged on the outer side of the shielding layer; the core wire comprises two copper core buses arranged inside and a PCT heating layer positioned outside the copper core buses, and an internal insulating layer is wrapped outside the PCT heating layer; and the outer side of the internal insulating layer is wrapped with a pressure-resistant layer. By adopting the technical scheme, the electric tracing band can be protected, and meanwhile, the heat tracing effect is enhanced.

Description

Combined self-temperature-limiting electric tracing band

Technical Field

The invention belongs to the technical field of electric tracing band products, and particularly relates to a combined self-temperature-limiting electric tracing band.

Background

The electric tracing band is widely applied to the transportation of liquid objects in pipelines, the freezing prevention and heat preservation of tank bodies, the maintenance of process temperature, the heating of roads, ramps, pedestrian crossings, eave, floors and the like. Wherein, inside the basic self-limiting electric tracing band, PTC high polymer material with heating function is distributed between the two conductive cores, and the outside is composed of high polymer insulating layer. When the power supply is switched on, the PTC polymer material inside is heated to expand, the resistance is increased, the heating power is reduced, and the temperature is reduced; when the temperature is reduced, the PTC polymer material inside shrinks when cooled, the resistance is reduced, the heating power is increased, and the temperature is increased, so that the effect of automatically adjusting the temperature is achieved. When the electric tracing band works, the electric tracing band heats a certain system, and if the heat transferred to the system by the electric tracing band in unit time is equal to the heat transferred to the external environment by the system, the temperature of the system is kept unchanged. The maximum temperature that can be reached by the system is called the maximum maintenance temperature.

In the prior art, the electric tracing band is operated to wrap the outer side of the pipeline in the use process, and the electric tracing band is easily collided by foreign objects in the use process, so that the heat tracing effect is reduced.

Disclosure of Invention

In view of the problems in the prior art, an object of the present invention is to provide a combined self-limiting electric tracing band, which can protect the electric tracing band and enhance the heat tracing effect.

In order to achieve the above object, the present invention provides a technical solution as follows:

a combined self-temperature-limiting electric tracing band comprises a tracing band body, wherein the tracing band body comprises a plurality of core wires arranged along the width direction, the length direction of the core wires is parallel to the length direction of the tracing band body, and the outer sides of the core wires are wrapped with external insulating layers; a shielding layer is arranged on the outer side of the external insulating layer, and a protective layer is arranged on the outer side of the shielding layer; the core wire comprises two copper core buses arranged inside and a PCT heating layer positioned outside the copper core buses, and an internal insulating layer is wrapped outside the PCT heating layer; and the outer side of the internal insulating layer is wrapped with a pressure-resistant layer.

Preferably, a plurality of plane one side that the heart yearn is constituteed is the heating surface, and the opposite side is the face that keeps warm, the resistance to compression layer is including being close to the heat conduction plane of a side of heating surface and being close to a side cross-sectional shape of face that keeps warm is curved resistance to compression cambered surface, the resistance to compression layer is made for the resistance to compression material.

Preferably, the external insulation layer is including the parcel the first insulation layer of heart yearn and with the second insulation layer of shielding layer laminating be provided with heat preservation and heat-conducting layer between first insulation layer and the second insulation layer, heat preservation and heat-conducting layer are located the both sides of heart yearn, the heat preservation is located and is close to heat preservation face one side, the heat-conducting layer is located and is close to heating face one side.

Preferably, the two sides of the heat tracing band body along the width direction are provided with splicing structures, and two adjacent turns of the heat tracing band body can be spliced through the splicing structures when being wound.

Preferably, the splicing structure comprises an arc-shaped protrusion positioned on one side of the heat tracing band body in the width direction and an arc-shaped groove positioned on the other side of the heat tracing band body in the width direction, and the arc-shaped protrusion and the arc-shaped groove of two adjacent circles of heat tracing bands can be mutually embedded.

Preferably, heat conducting wires are arranged in the first insulating layer, are annular and are connected with the heat conducting side and the heat preservation surface.

Preferably, a first decorative layer is arranged on the outer side of the protective layer and on one side close to the heat conducting layer, and a second decorative layer is arranged on one side close to the heat insulating layer.

Preferably, the outer insulation layer and/or the inner insulation layer are made of composite fluoroplastic.

According to the combined self-temperature-limiting electric tracing band provided by the invention, the compression-resistant layer arranged on the outer side of the core wire can be used for performing compression-resistant protection on the core wire to a certain extent, and meanwhile, the heat exchange with a pipeline to be insulated can be enhanced through the heat-insulating layer and the heat-conducting layer arranged between the first insulating layer and the second insulating layer, and meanwhile, the heat-insulating treatment can be performed on the electric tracing band, so that the heat loss is reduced. Meanwhile, through the arranged splicing structure, the electric tracing band can be spliced on the outer side of the pipeline to be insulated, so that an electric heating protective film is formed on the outer side, and the pipeline to be insulated is heated and protected in a heat insulation mode.

Drawings

FIG. 1 is a cross-sectional view of a combined self-limiting electric tracing band of the present invention;

FIG. 2 is a cross-sectional view of a protruded core wire in a combined self-limiting temperature electric tracing band of the present invention;

FIG. 3 is a schematic view of a protruding splicing structure in a combined self-limiting temperature electric tracing band according to the present invention.

Reference numbers in the figures:

100. a core wire; 110. a copper core bus; 120. a PCT heating layer; 130. an internal insulating layer; 140. a pressure resistant layer; 141. a heat conducting plane; 142. a compression-resistant arc surface; 150. heating the surface; 160. keeping warm; 200. an outer insulating layer; 210. a first insulating layer; 220. a second insulating layer; 300. a shielding layer; 400. a protective layer; 500. a heat-insulating layer; 600. a heat conductive layer; 610. heat conducting wires; 700. splicing structures; 710. an arc-shaped protrusion; 720. an arc-shaped groove; 800. a first decorative layer; 900. and a second decorative layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

The invention provides a combined self-temperature-limiting electric tracing band, which comprises a tracing band body, wherein the tracing band body comprises a plurality of core wires 100 arranged at intervals along the width direction of the tracing band body, the length direction of the core wires 100 is parallel to the length direction of the tracing band body, the core wires 100 are electrified and heated in the using process, and the outer sides of the core wires 100 are wrapped with external insulating layers 200; the shielding layer 300 is disposed outside the external insulation layer 200, and the protection layer 400 is disposed outside the shielding layer 300. In the use process, the core wire 100 is electrified to generate heat, and the heat exchanges with a pipeline to be insulated after passing through the external insulating layer 200, the shielding layer 300 and the protective layer 400. The width direction refers to a cross section perpendicular to the length of the heat tracing band, and the longer side is the width direction and the shorter side is the thickness direction.

The core wire 100 comprises two copper core buses 110 arranged inside and a PCT heating layer 120 positioned outside the copper core buses 110, wherein an internal insulating layer 130 is wrapped outside the PCT heating layer 120; the inner insulating layer 130 is wrapped with a pressure resistant layer 140. Through the arranged compression-resistant layer 140, the internal PCT heating layer 120 and the copper core bus 110 can be prevented from being damaged in the using process.

Specifically, the plurality of core wires 100 form a plane, and a heating surface 150 is disposed on one side of the plane, and a heat preservation surface 160 is disposed on the other side of the plane, wherein, in use, the heating surface 150 is a side surface close to the pipeline, and the heat preservation surface 160 is a side surface far from the pipeline. The heating surface 150 serves to exchange heat with the pipe, and the insulation surface 160 insulates heat generated from the core wire 100 and also insulates low temperature from the outside.

The anti-pressure layer 140 wraps the PCT exothermic layer 120 and includes a heat conducting plane 141 adjacent to the heating surface 150 and an anti-pressure curved surface 142 adjacent to one side of the insulating surface 160. The heat conducting plane 141 is a horizontal plane, the cross section of the pressure-resistant arc surface 142 is an arc-shaped cross section, and the pressure-resistant layer 140 is made of a pressure-resistant material. In the use, when suffering external force extrusion, because resistance to compression cambered surface 142 is the arc cross-section, can reduce the extrusion intensity to the inside of heart yearn 100 to a certain extent, guarantee that heart yearn 100 inner structure is good.

Further, in the using process, in order to further enhance the heat tracing heat preservation effect, the external insulation layer 200 includes a first insulation layer 210 wrapping the core wire 100 and a second insulation layer 220 attached to the shielding layer 300, a heat preservation layer 500 and a heat conduction layer 600 are disposed between the first insulation layer 210 and the second insulation layer 220, the heat preservation layer 500 and the heat conduction layer 600 are located at two sides of the core wire 100, the heat preservation layer 500 is located at one side close to the heat preservation surface 160, and the heat conduction layer 600 is located at one side close to the heating surface 150. In the use, through the heat preservation 500 that sets up, can reduce the heat exchange between external low temperature and the companion tropical, and heat-conducting layer 600 can strengthen and treat the heat exchange of heat preservation pipeline, and then improve heat preservation heat transfer effect.

Preferably, the first insulating layer 210 is provided with heat conducting wires 610, and the heat conducting wires 610 are annular and connect the heat conducting side and the heat insulating surface 160. Through the heat conduction silk 610 that sets up, in the use, can equilibrate the temperature of heat preservation face 160 and heat conduction face both sides, and then improve the utilization ratio of the produced temperature of electric tracing band, the better pipeline that treats the heat preservation keeps warm.

In the area with relatively low temperature, after the heat tracing band is wound on the outer side, the temperature of the pipeline is still relatively low, in order to achieve a better temperature increasing effect, splicing structures 700 are arranged on two sides of the heat tracing band body in the width direction, and the two adjacent heat tracing band bodies can be spliced through the splicing structures 700 when being wound.

Specifically, the splicing structure 700 includes an arc-shaped protrusion 710 located at one side of the heat trace band body in the width direction and an arc-shaped groove 720 located at the other side of the heat trace band body in the width direction, and the arc-shaped protrusion 710 and the arc-shaped groove 720 of two adjacent turns of heat trace bands can be mutually embedded. Through the mosaic structure 700 who sets up, when using, can wholly twine in the pipeline outside, and then keep apart pipeline and external low temperature air, cooperate the heat preservation 500 and the heat-conducting layer 600 in electric tracing area simultaneously, better play the thermal-insulated effect that keeps warm. The pipeline has better antifreezing effect in low temperature environment.

A first decorative layer 800 is disposed on the outer side of the protective layer 400 and on the side close to the heat conductive layer 600, and a second decorative layer 900 is disposed on the side close to the heat insulating layer 500. The first decoration layer 800 and the second decoration layer 900 are different decoration layers, and prompt slogans can be arranged on the decoration layers, so that construction is facilitated.

The outer insulation layer 200 and/or the inner insulation layer 130 are made of a composite fluoroplastic.

According to the combined self-temperature-limiting electric tracing band provided by the invention, the compression-resistant layer 140 arranged on the outer side of the core wire 100 can protect the core wire 100 to a certain extent against compression, and meanwhile, the heat exchange with a pipeline to be insulated can be enhanced, and the heat preservation treatment can be carried out on the electric tracing band to reduce the heat loss through the heat preservation layer 500 and the heat conduction layer 600 arranged between the first insulation layer 210 and the second insulation layer 220. Meanwhile, through the arranged splicing structure, the electric tracing band can be spliced on the outer side of the pipeline to be insulated, so that an electric heating protective film is formed on the outer side, and the pipeline to be insulated is heated and protected in a heat insulation mode.

The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A combined self-temperature-limiting electric tracing band comprises a tracing band body and is characterized in that: the heat tracing band body comprises a plurality of core wires (100) arranged along the width direction, the length direction of the core wires (100) is parallel to the length direction of the heat tracing band body, and an external insulating layer (200) is wrapped on the outer side of each core wire (100); a shielding layer (300) is arranged on the outer side of the external insulating layer (200), and a protective layer (400) is arranged on the outer side of the shielding layer (300);

the core wire (100) comprises two copper core buses (110) arranged inside, a PCT heating layer (120) located on the outer side of each copper core bus (110), and an internal insulating layer (130) is wrapped on the outer side of each PCT heating layer (120); and the outer side of the inner insulating layer (130) is wrapped with a pressure resistant layer (140).

2. The combined self-limiting temperature electric tracing band of claim 1, wherein: a plurality of plane one side that heart yearn (100) are constituteed is heating surface (150), and the opposite side is heat preservation face (160), anti pressure layer (140) are including being close to heat conduction plane (141) of heating surface (150) a side and being close to heat preservation face (160) a side cross-sectional shape is curved resistance to compression cambered surface (142), anti pressure layer (140) are made for the resistance to compression material.

3. The combined self-limiting temperature electric tracing band of claim 2, wherein: the external insulation layer (200) is including the parcel first insulation layer (210) of heart yearn (100) and with second insulation layer (220) of shielding layer (300) laminating be provided with heat preservation (500) and heat-conducting layer (600) between first insulation layer (210) and second insulation layer (220), heat preservation (500) and heat-conducting layer (600) are located the both sides of heart yearn (100), heat preservation (500) are located and are close to heat preservation face (160) one side, heat-conducting layer (600) are located and are close to heating face (150) one side.

4. The combined self-limiting temperature electric tracing band of claim 1, wherein: splicing structures (700) are arranged on two side edges of the heat tracing band body along the width direction, and two adjacent circles of heat tracing band bodies can be spliced through the splicing structures (700) when being wound.

5. The combined self-limiting temperature electric tracing band of claim 1, wherein: the splicing structure (700) comprises an arc-shaped protrusion (710) positioned on one side of the heat tracing band body in the width direction and an arc-shaped groove (720) positioned on the other side of the heat tracing band body in the width direction, and the arc-shaped protrusion (710) and the arc-shaped groove (720) of two adjacent circles of heat tracing bands can be mutually embedded.

6. The combined self-limiting temperature electric tracing band of claim 3, wherein: be provided with heat conduction silk (610) in first insulating layer (210), heat conduction silk (610) are the annular, and connect heat conduction side and heat preservation face (160).

7. The combined self-limiting temperature electric tracing band of claim 1, wherein: the protective layer (400) is provided with a first decorative layer (800) on one side close to the heat conducting layer (600) and a second decorative layer (900) on one side close to the heat insulating layer (500).

8. The combined self-limiting temperature electric tracing band of claim 1, wherein: the outer insulation layer (200) and/or the inner insulation layer (130) are made of composite fluoroplastic.