CN210777987U

CN210777987U - High-temperature-resistant control cable

Info

Publication number: CN210777987U
Application number: CN201922144496.0U
Authority: CN
Inventors: 徐延华; 李书银
Original assignee: Jinhu Botong Technology Co ltd
Current assignee: Jinhu Botong Technology Co ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-06-16
Anticipated expiration: 2029-12-04

Abstract

The utility model relates to the technical field of cables, and discloses a high-temperature-resistant control cable, which comprises cable cores, wherein the outer part of each cable core is wrapped with an insulating layer, the outer part of the insulating layer is provided with a flame-retardant material layer, the outer side of the flame-retardant material layer is fixedly provided with a heat insulating layer, the heat insulating layer is a vacuum heat insulating layer, the heat insulating layer is in the shape of a circular arc, the two heat insulating layers are vertically symmetrical, through the arrangement of the heat insulating layer, a supporting block is arranged in the heat insulating layer, the supporting block protects the heat insulating layer from deformation and damage due to external extrusion, the vacuum heat insulating layer is based on the principles of vacuum heat insulation and micropore heat insulation, the vacuum heat insulating plate is formed by compounding a filling core material and a vacuum protection surface layer, the heat transfer caused by air convection is effectively, the insulating layer isolates external heat, prevents that external high temperature from damaging the cable.

Description

High-temperature-resistant control cable

Technical Field

The invention relates to the technical field of cables, in particular to a high-temperature-resistant control cable.

Background

Cables are generally rope-like cables made by stranding several or groups of conductors (at least two in each group), each group being insulated from each other and often twisted around a center, the entire outer surface being coated with a highly insulating coating. The control cable is a polyvinyl chloride insulation and polyvinyl chloride sheath control cable which is suitable for industrial and mining enterprises, energy traffic departments, occasions of controlling and protecting circuits with the alternating current rated voltage below 450/750V, and the like, and the control cable directly transmits electric energy to power supply connecting circuits of various electric equipment appliances from a power distribution point of a power system. The control cable can produce the heat in the course of the work and lead to inside high temperature, and present some control cable only defends outside high temperature, has neglected the heat that cable core self produced, can't volatilize the heat discharge of cable inside, leads to the inside temperature of cable to be higher and higher to make cable damage from inside.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the high-temperature-resistant control cable which has the advantages of fast heat dissipation and the like and solves the problem of overhigh internal temperature.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a high temperature resistant control cable, includes the cable core, and the outside parcel of every cable core has the insulating layer, and the insulating layer prevents the electric leakage of cable core, and the outside of insulating layer is provided with flame retardant material layer, and flame retardant material layer wraps up all insulating layers in inside, and flame retardant material layer's outside fixed mounting has the insulating layer, and the insulating layer is the vacuum insulation layer, and the insulating layer is the shape of circular arc, and the insulating layer has two, and two insulating layer longitudinal symmetries.

Preferably, the inside of insulating layer is provided with the supporting shoe, and the supporting shoe is square piece, leaves the space in the middle of two insulating layers, and the space has two, and two space bilateral symmetry, and the inside fixed mounting in space has the heat conduction strip, and the heat conduction strip is square strip, and the quantity of heat conduction strip sets up according to the size in space.

Preferably, the carbon fiber layers are fixedly arranged on the outer portions of the two heat insulation layers, square holes are formed in the carbon fiber layers, the heat conduction layers are fixedly arranged on the outer side wall surfaces of the carbon fiber layers, the heat conduction strips penetrate through the square holes to be fixedly connected with the heat conduction layers, and the number of the square holes is equal to that of the heat conduction strips.

Preferably, the heat-resistant layer is installed on the outer side of the heat-conducting layer, heat dissipation holes are formed in the heat-resistant layer and are square holes, heat dissipation fins are arranged inside the heat dissipation holes and are square pieces, and the heat dissipation fins penetrate through the heat dissipation holes and are fixedly connected with the heat-conducting layer.

(III) advantageous effects

Compared with the prior art, the invention provides a high-temperature-resistant control cable which has the following beneficial effects:

1. this high temperature resistant control cable, through having set up the insulating layer, the insulating layer is vacuum insulation layer, the insulating layer is convex shape, and insulating layer internally mounted has the supporting shoe, the supporting shoe protection insulating layer can not warp the damage because of external extrusion, vacuum insulation layer is based on vacuum insulation and the adiabatic principle of micropore, vacuum insulation board is formed by filling core and vacuum protection top layer complex, it avoids the heat transfer that the air convection arouses effectively, therefore the coefficient of heat conductivity can reduce by a wide margin, and do not contain any ODS material, have environmental protection and energy-efficient characteristic, the isolated external heat of insulating layer, prevent external high temperature damage cable.

2. This high temperature resistant control cable, through having set up the heat-conducting layer, the heat-conducting layer sets up the outside at the insulating layer, because space internally mounted between two insulating layers has the heat conduction strip, when the temperature of inside cable core is too high, the heat gives off the flame retardant material layer, derive the heat by the heat conduction strip, the heat conduction strip is in the same place with heat conduction strip fixed connection, the heat conduction strip can be with the quick transmission of heat inside the heat-conducting layer, make the temperature of cable core reduce, the outside of heat-conducting layer is provided with the fin, the fin passes the outside of louvre intercommunication cable, fin and louvre discharge the heat of heat-conducting layer, let the temperature of heat-conducting layer reduce, because set up the heat conduction strip, the heat-conducting layer, louvre and fin make the temperature reduction of cable core.

3. This high temperature resistant control cable, through having set up the carbon fiber layer, the carbon fiber is a high strength that the carbon content is more than 95%, the fibrous novel fiber material of high modulus, and the carbon fiber layer quality is lighter than metallic aluminum, but intensity is higher than steel, and have high hardness, high strength, light in weight, high chemical resistance, high temperature resistance's characteristic, current cable can appear ageing rupture after the time is permanent, lead to the naked hourglass of cable core, be provided with the carbon fiber layer in the insulating layer outside, can protect inside insulating layer can not break because of external force, also can protect inside cable core can not damage because of external force, and the carbon fiber layer has high temperature resistance's characteristic, can further prevent high temperature damage cable core.

Drawings

FIG. 1 is a schematic sectional elevation view of the structure of the present invention;

FIG. 2 is a schematic side cross-sectional view of the inventive structure.

In the figure: the cable comprises a cable core 1, an insulating layer 2, a flame-retardant material layer 3, a heat insulation layer 4, a supporting block 5, a gap 6, a heat conduction strip 7, a carbon fiber layer 8, a heat conduction layer 9, a heat-resistant layer 10, a square hole 11, heat dissipation holes 12 and heat dissipation fins 13.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Referring to fig. 1-2, a high temperature resistant control cable includes a cable core 1, the cable core 1 is a conductor for transmitting current, the cable core 1 is of a conventional structure, which is not described herein, the cable is generally in a rope-like shape formed by twisting several or several groups of cable cores 1 (each group includes at least two), an insulating layer 2 is wrapped outside each cable core 1, the insulating layer 2 prevents electric leakage of the cable core, the insulating layer 2 is made of insulating and high temperature resistant materials, a flame retardant material layer 3 is disposed outside the insulating layer 2, the flame retardant material layer 3 wraps all the insulating layers 2 inside, the flame retardant material layer 3 is for preventing spontaneous combustion caused by high temperature of the cable core 1, a heat insulation layer 4 is fixedly installed outside the flame retardant material layer 3, the heat insulation layer 4 is a vacuum heat insulation layer, the heat insulation layer 4 is in an arc shape, the heat insulation layers 4 are two, and the two heat insulation layers 4 are, the heat insulation layer 4 is internally provided with supporting blocks 5, the supporting blocks 5 are square blocks, the supporting blocks 5 are used for protecting the heat insulation layer from being deformed due to external extrusion, gaps 6 are reserved between the two heat insulation layers 4, the number of the gaps 6 is two, the two gaps 6 are bilaterally symmetrical, heat conduction strips 7 are fixedly installed in the gaps 6, the heat conduction strips 7 are square strips, the number of the heat conduction strips 7 is set according to the size of the gaps 6, carbon fiber layers 8 are fixedly installed on the outer portions of the two heat insulation layers 4, each carbon fiber layer 8 is a novel high-strength and high-modulus fiber material with the carbon content of more than 95%, square holes 11 are formed in the carbon fiber layers 8, heat conduction layers 9 are fixedly installed on the outer side wall surfaces of the carbon fiber layers 8, the heat conduction strips 7 penetrate through the square holes 11 to be fixedly connected with the heat conduction layers 9, and the number of, the heat-resistant layer 10 is installed on the outer side of the heat-conducting layer 9, the heat-resistant layer 10 is made of a high-temperature-resistant material, the heat-resistant layer 10 can prevent external heat from entering the inside of the cable, heat dissipation holes 12 are formed in the heat-resistant layer 10, the heat dissipation holes 12 are square holes, heat dissipation fins 13 are arranged inside the heat dissipation holes 12, the heat dissipation fins 13 are square pieces, the heat dissipation fins 12 penetrate through the heat dissipation holes 12 to be fixedly connected with the heat-conducting layer 9, and the heat dissipation fins 12 dissipate heat on the heat-conducting layer.

When in use, the utility model is used,

in the first step, the heat-resistant layer 10 blocks external high temperature from damaging the inside of the cable, so that most of heat is blocked outside the heat-resistant layer 10, and part of heat entering the cable is also blocked by the heat-insulating layer 4.

The second step, when control cable during operation, inside cable core 1 can produce the heat, make inside temperature rise, the outside of cable core 1 is provided with flame retardant material layer 3, flame retardant material layer 3 is in order to prevent to take place because the condition of the too high inside spontaneous combustion that leads to of temperature, the heat is conducted the inside of heat-conducting layer 9 by heat conduction strip 7 when flame retardant material layer 3 is inside, heat-conducting layer 9 sets up the outside at insulating layer 4, insulating layer 4 can be isolated with the heat, the outside of control cable is volatilized with the heat to fin 12 that sets up on the heat-conducting layer 9, the inside temperature of cable has been reduced.

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. A high temperature resistant control cable, includes cable core (1), its characterized in that: every the outside parcel of cable core (1) has insulating layer (2), the outside of insulating layer (2) is provided with flame retardant material layer (3), flame retardant material layer (3) wraps up all insulating layer (2) in inside, the outside fixed mounting of flame retardant material layer (3) has insulating layer (4), insulating layer (4) have two, leave space (6) in the middle of two insulating layer (4), space (6) have two, and two space (6) bilateral symmetry, the inside fixed mounting of space (6) has heat conduction strip (7), the outside fixed mounting of two insulating layer (4) has carbon fiber layer (8), the outside wall of carbon fiber layer (8) is provided with heat-conducting layer (9), heat-resistant layer (10) is installed in the outside of heat-conducting layer (9), be provided with louvre (12) and fin (13) on heat-resistant layer (10).

2. A high temperature resistant control cable according to claim 1, wherein: the two heat insulation layers (4) are vertically symmetrical, and supporting blocks (5) are arranged inside the heat insulation layers (4).

3. A high temperature resistant control cable according to claim 1, wherein: square holes (11) are formed in the carbon fiber layer (8), the outer side wall face of the carbon fiber layer (8) is fixedly provided with a heat conduction layer (9), and the heat conduction strip (7) penetrates through the square holes (11) to be fixedly connected with the heat conduction layer (9).

4. A high temperature resistant control cable according to claim 1, wherein: the heat-resistant layer (10) is provided with heat dissipation holes (12), heat dissipation fins (13) are arranged inside the heat dissipation holes (12), and the heat dissipation fins (13) penetrate through the heat dissipation holes (12) and are fixedly connected with the heat conduction layer (9).