CN212851077U

CN212851077U - Improved carbon fiber electric heating wire

Info

Publication number: CN212851077U
Application number: CN202022137498.XU
Authority: CN
Inventors: 姚秋平; 何健
Original assignee: Suzhou Jianjincheng Electrical Accessories Co ltd
Current assignee: Suzhou Jianjincheng Electrical Accessories Co ltd
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2021-03-30
Anticipated expiration: 2030-09-25

Abstract

The utility model relates to an electric heat line field specifically is an improved generation carbon fiber electric heat line, including the copper conductor, thermal-insulated insulating layer and stranded carbon fiber silk, the copper conductor cover is equipped with thermal-insulated insulating layer, carbon fiber silk overcoat is equipped with the first insulation layer, stranded carbon fiber silk is spiral winding on thermal-insulated insulating layer's outer wall, and it has the heat-conducting layer to fill between the stranded carbon fiber silk, the heat-conducting layer overcoat is equipped with fire-retardant layer, the caulking groove that is annular evenly distributed is seted up to fire-retardant layer's inner wall, heat-conducting layer embedding caulking groove, fire-retardant layer overcoat is equipped with the second insulating layer, fire-retardant layer's outer wall integrated into one piece has the abaculus that is annular evenly distributed. The utility model discloses a set up caulking groove and abaculus at fire-retardant layer, improve fire-retardant layer and heat-conducting layer and the tight degree of being connected of second insulating layer, effectively protect the carbon fiber silk, solved the easy fracture of original carbon fiber electric heat line and inside crooked problem.

Description

Improved carbon fiber electric heating wire

Technical Field

The utility model relates to an electric heat line field specifically is an improved generation carbon fiber electric heat line.

Background

At present, carbon fiber is gradually applied to the field of electric heating as a new material, and its good frequency spectrum characteristic and heat conversion rate are gradually recognized, so that many electric heating elements and products using carbon fiber as an electric heating material, such as carbon fiber electric heating wires, are produced. Compared with the traditional metal electric heating wire, the carbon fiber electric heating wire has the characteristics of rapid temperature rise, stable resistance value, uniform heating, light weight and the like, thereby being widely applied.

The existing carbon fiber electric heating wire is easy to break and bend inside carbon fiber wires due to the high modulus of the carbon fiber, so that the heating effect is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides an improved generation carbon fiber electric heat line can make fixed connection between every layer cladding, has improved the bending resistance and the tensile strength of carbon fiber electric heat line, has solved the problem of original carbon fiber electric heat line easy fracture and inside bending.

In order to realize the above-mentioned purpose that can improve carbon fiber electric heat line bending resistance and tensile strength, the utility model provides a following technical scheme: the utility model provides an improved generation carbon fiber electric heat wire, includes copper conductor, thermal insulation layer and stranded carbon fiber silk, the copper conductor cover is equipped with thermal insulation layer, the carbon fiber silk overcoat is equipped with the first insulation layer, the stranded carbon fiber silk be spiral winding in on thermal insulation layer's the outer wall, and the stranded fill between the carbon fiber silk has the heat-conducting layer, the heat-conducting layer overcoat is equipped with fire-retardant layer, the caulking groove that is annular evenly distributed is seted up to fire-retardant layer's inner wall, the heat-conducting layer embedding the caulking groove, fire-retardant layer overcoat is equipped with the second insulating layer, the outer wall integrated into one piece on fire-retardant layer has the abaculus that is annular evenly distributed, the abaculus imbeds completely in the inner wall of second insulating layer just, the outer cover of second insulating layer is equipped with electromagnetic shield.

Optionally, the longitudinal section of the caulking groove is triangular; the longitudinal section of the embedded block is triangular.

Optionally, the heat insulation layer comprises a PVC insulation pipe; the heat conducting layer comprises an inorganic insulating heat conducting filler.

Optionally, the first insulating layer and the second insulating layer both include mica tapes; the flame retardant layer comprises a low smoke low halogen polyvinyl chloride flame retardant tube.

Optionally, the electromagnetic shielding layer includes a tubular cage-like structure woven by a ribbon metal; the outer protective layer comprises a fluoroplastic pipe.

Compared with the prior art, the utility model provides an improved generation carbon fiber electric heat line possesses following beneficial effect: the utility model discloses a set up caulking groove and abaculus at fire-retardant layer, improve fire-retardant layer and heat-conducting layer and the tight degree of being connected of second insulating layer, effectively protect the carbon fiber silk, solved the easy fracture of original carbon fiber electric heat line and inside crooked problem.

Drawings

Fig. 1 is a schematic overall structure diagram of the present invention;

fig. 2 is a cross-sectional view of the present invention.

In the figure: 1. a copper conductor; 2. a heat insulating layer; 3. a heat conductive layer; 4. a first insulating layer; 5. carbon fiber filaments; 6. a flame retardant layer; 7. a second insulating layer; 8. an electromagnetic shielding layer; 9. an outer protective layer; 10. caulking grooves; 11. and (5) an embedded block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b): referring to fig. 1 and fig. 2, the present invention provides a technical solution: the utility model provides an improved generation carbon fiber electric heat wire, includes copper conductor 1, thermal insulation layer 2 and stranded carbon fiber silk 5, and 1 cover of copper conductor is equipped with

thermal insulation layer

2, and 5 overcoat of carbon fiber silk are equipped with first insulation layer 4, and stranded carbon fiber silk 5 is spiral winding on thermal insulation layer 2's outer wall, and packs between the stranded carbon fiber silk 5 and have heat-conducting

layer

3, and 3 overcoat of heat-conducting layer is equipped with fire-retardant layer 6.

Since the carbon fiber filaments 5 are spirally wound on the heat insulating layer 2 outside the copper conductor 1, the carbon fiber filaments 5 are less likely to be broken when the carbon fiber filaments 5 are pulled. Wherein, the PVC insulating tube is selected for use to thermal insulation layer 2, and mica tape is all selected for use to first insulating layer 4 and second insulating layer 7, and fire-retardant layer 6 selects for use the fire-retardant pipe of low smoke low halogen polyvinyl chloride.

The inner wall of the flame-retardant layer 6 is provided with an embedded groove 10 which is uniformly distributed in an annular shape, the heat conduction layer 3 is made of inorganic insulating heat conduction filler nano alumina particles, before the nano alumina particles are filled, the carbon fiber wire 5 is wound on the heat insulation layer 2, the flame-retardant layer 6 is sleeved on the periphery of the carbon fiber wire 5, and finally the heat conduction layer 3 is filled between the heat insulation layer 2 and the flame-retardant layer 6. The second insulating layer 7 is sleeved outside the flame-retardant layer 6, the embedded blocks 11 which are uniformly distributed in an annular shape are integrally formed on the outer wall of the flame-retardant layer 6, and the embedded blocks 11 are just completely embedded into the inner wall of the second insulating layer 7. Wherein, the longitudinal section of caulking groove 10 and abaculus 11 is triangle-shaped, because the existence of caulking groove 10, make the fire-retardant layer 6 of heat-conducting layer 3 embedding, caulking groove 10 improves the connection compactness of fire-retardant layer 6 and heat-conducting layer 3, in addition, can improve the connection compactness of fire-retardant layer 6 and second insulating layer 7 through abaculus 11, fire-retardant layer 6 has certain resistance to the power of turning round of external again, can not lead to carbon fiber 5 to take place serious bending, effectual protection is located the inboard carbon fiber 5 of fire-retardant layer 6.

An electromagnetic shielding layer 8 is sleeved outside the second insulating layer 7, and an outer protective layer 9 is sleeved outside the electromagnetic shielding layer 8. The electromagnetic shielding layer 8 is of a pipe cage-shaped structure formed by weaving ribbon-shaped metal, and the outer protective layer 9 is made of fluoroplastic pipes.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an improved generation carbon fiber electric heat line, includes copper conductor (1), thermal-insulated insulating layer (2) and stranded carbon fiber silk (5), its characterized in that: the copper conductor (1) is sleeved with the heat insulation layer (2), a first insulation layer (4) is sleeved outside the carbon fiber wires (5), the carbon fiber wires (5) are spirally wound on the outer wall of the heat insulation layer (2) and are stranded, a heat conduction layer (3) is filled between the carbon fiber wires (5), a flame retardant layer (6) is sleeved outside the heat conduction layer (3), an embedded groove (10) which is annularly and uniformly distributed is formed in the inner wall of the flame retardant layer (6), the heat conduction layer (3) is embedded into the embedded groove (10), a second insulation layer (7) is sleeved outside the flame retardant layer (6), embedded blocks (11) which are annularly and uniformly distributed are integrally formed on the outer wall of the flame retardant layer (6), the embedded blocks (11) are just completely embedded into the inner wall of the second insulation layer (7), an electromagnetic shielding layer (8) is sleeved outside the second insulation layer (7), an outer protective layer (9) is sleeved outside the electromagnetic shielding layer (8).

2. The improved carbon fiber electric heating wire of claim 1, wherein: the longitudinal section of the caulking groove (10) is triangular; the longitudinal section of the embedded block (11) is triangular.

3. The improved carbon fiber electric heating wire of claim 1, wherein: the heat insulation layer (2) comprises a PVC insulation pipe; the heat conducting layer (3) comprises inorganic insulating heat conducting filler.

4. The improved carbon fiber electric heating wire of claim 1, wherein: the first insulating layer (4) and the second insulating layer (7) each comprise a mica tape; the flame-retardant layer (6) comprises a low-smoke low-halogen polyvinyl chloride flame-retardant tube.

5. The improved carbon fiber electric heating wire of claim 1, wherein: the electromagnetic shielding layer (8) comprises a pipe cage-shaped structure formed by weaving ribbon-shaped metal; the outer protective layer (9) comprises a fluoroplastic pipe.