CN214588100U - High-temperature-resistant anti-cracking power cable - Google Patents

Abstract

The utility model relates to a cable composition structure correlation technique field just discloses a high temperature resistant crack control type power cable, including cable body and enhancement heart yearn, strengthen the heart yearn and install the central point at the cable body and put, strengthen the annular outside symmetry of heart yearn and be provided with the toper protrudingly, strengthen the outside of heart yearn and be provided with semicircle embedding circle, the annular inboard of semicircle embedding circle is provided with the taper groove with the protruding looks adaptation of toper, the protruding corresponding taper groove inboard of embedding of toper, the semicircular groove annular embedding that semicircle embedding circled has four wires, the parcel has the inner sheath on the wire. This high temperature resistant crack control type power cable, when the wire is heated the inflation, the flexible flexibility that semicircle embedding circle insulating rubber itself has for the half slot inside wall of semicircle embedding circle presss from both sides tight location to the better embedding of wire, and when the wire is cooled down and contracts, the half slot inside wall of semicircle embedding circle itself presss from both sides tightly with wire interference fit, effectively ensures the cooled shrink location nature of wire.

Description

High-temperature-resistant anti-cracking power cable

Technical Field

The utility model relates to a cable composition structure correlation technique field specifically is a high temperature resistant crack control type power cable.

Background

With the development of science and technology, the fields of industry and the like are also rapidly improved, and the use amount of the cable is increased, the cable is generally a cable which is similar to a rope and is formed by twisting at least two stranded wires in each group of a plurality of or a plurality of groups of wires, the wires in each group are mutually insulated and are usually twisted around a center, the whole outer surface is coated with a high-insulation covering layer, the types of the cable are various, the cable can be applied to different fields, and the use environments of the different fields are different, so that different requirements are also made on the cable.

When the cable is used under load in a high-temperature environment for a long time, the internal matching structure of the cable expands with heat and contracts with cold, so that the cable is easy to crack and damage, the cable is easy to damage, an electrical fire is easy to cause, and more loss is brought to people.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a high temperature resistant crack control type power cable has solved power cable expend with heat and contract with cold and has easily caused the cable fracture damage to influence the problem of cable normal use.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high temperature resistant crack control type power cable, includes the cable body and strengthens the heart yearn, strengthen the heart yearn and install the central point at the cable body and put, the annular outside symmetry of strengthening the heart yearn is provided with the toper protrudingly, and the outside of strengthening the heart yearn is provided with semicircle embedding circle, and the annular inboard of semicircle embedding circle is provided with the taper groove with the protruding looks adaptation of toper, and the protruding corresponding taper groove inboard of embedding of toper, the annular embedding of semicircle embedding circle has four wires, the parcel has the inner sheath on the wire, and the outside of semicircle embedding circle is provided with the heat dissipation buffer layer, and the gap packing between heat dissipation buffer layer and the semicircle embedding circle has the heat dissipation insulation stopping, and the outside parcel of heat dissipation buffer layer has fire-retardant heat-conducting layer, and the outside parcel of fire-retardant heat-conducting layer has the oversheath.

Preferably, the annular side surface annular array of the outer sheath is provided with inner grooves, the arranging direction of the inner grooves is parallel to the length direction of the cable body, and the arrangement of the inner grooves effectively increases the contact area between the outer sheath and the external environment, so that heat generated by the wires can be quickly dissipated.

Preferably, the matching relationship between the conical protrusions and the inner side walls of the corresponding conical grooves is interference fit, so that the reinforcing core wires can be tightly matched and connected with the semicircular embedded rings through the conical protrusions.

Preferably, the semicircle embedding ring is made of an insulating rubber material, and a shielding layer is attached to a contact part of the semicircle embedding ring and the inner sheath, so that the electromagnetic interference of a close-distance part of two adjacent wires is reduced to the maximum extent.

Preferably, the outside of heat dissipation buffer layer is provided with the embedding protrudingly, and the embedded groove with the protruding looks adaptation of embedding is seted up to the inboard of fire-retardant heat-conducting layer, and the corresponding embedded groove inboard of the protruding embedding of embedding for the cooperation is connected inseparabler between heat dissipation buffer layer and the fire-retardant heat-conducting layer, the stability of cooperation connection between the guarantee structure.

Preferably, the inner sheath and the outer sheath are both made of insulating rubber materials, and the use safety of the cable is guaranteed.

(III) advantageous effects

The utility model provides a high temperature resistant crack control type power cable. The method has the following beneficial effects:

(1) this high temperature resistant crack control type power cable, carry out the embedding installation to the wire through the half slot that sets up on the semicircle embedding circle, be different from the tradition and carry out doubling or transposition connected mode to the wire, when the wire thermal expansion, the flexible flexibility that semicircle embedding circle insulating rubber itself has, make the half slot inside wall of semicircle embedding circle press from both sides tight location to the better embedding of wire, ensure the positional stability of wire, when the wire receives the cold shrink, the half slot inside wall itself of semicircle embedding circle is tight with wire interference fit, effectively ensure the cold shrink location nature of wire, effectively avoid the cable fracture condition that cable expend with heat and contract with cold and lead to, shielding layer on the semicircle embedding circle can the effectual electromagnetic field that shields two adjacent wire distances, guarantee structure is close complex stability between the head.

(2) This high temperature resistant crack control type power cable, through setting up heat dissipation insulation filler, make the heat that the wire produced at load current can in time distribute away through insulation filler, the heat dissipation buffer layer can effectually distribute the heat, and imbed prominent setting on the heat dissipation buffer layer, the effectual cable heat dissipation heat conduction area that has increased, increase the connection stability between heat dissipation buffer layer and the fire-retardant heat-conducting layer simultaneously, make the produced heat of wire load current can in time distribute away, avoid thermal piling up to heat up.

(3) This high temperature resistant crack control type power cable, the inner circle through setting up enhancement heart yearn and semicircle embedding circle passes through the toper protruding to be connected that mutually supports, and effectual enhancement power cable's arrangement joint strength ensures the cooperation compactness between the structure.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: the cable comprises a cable body 1, a semicircular embedding ring 2, a conical groove 3, a conical protrusion 4, a lead 5, an inner sheath 6, a heat dissipation buffer layer 7, a heat dissipation insulating filler 8, an outer sheath 9, a flame-retardant heat conduction layer 10, an inner groove 11 and a reinforced core wire 12.

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.

As shown in fig. 1, the utility model provides a technical solution: a high-temperature-resistant anti-cracking power cable comprises a cable body 1 and a reinforcing core wire 12, wherein the reinforcing core wire 12 is installed at the central position of the cable body 1, conical protrusions 4 are symmetrically arranged on the annular outer side of the reinforcing core wire 12, a semicircular embedded ring 2 is arranged on the outer side of the reinforcing core wire 12, a conical groove 3 matched with the conical protrusions 4 is arranged on the annular inner side of the semicircular embedded ring 2, the conical protrusions 4 are embedded into the corresponding conical grooves 3, four wires 5 are annularly embedded into the semicircular grooves on the semicircular embedded ring 2, an inner sheath 6 wraps the wires 5, a heat dissipation buffer layer 7 is arranged on the outer side of the semicircular embedded ring 2, a gap between the heat dissipation buffer layer 7 and the semicircular embedded ring 2 is filled with heat dissipation insulating fillers 8, a flame-retardant heat-conducting layer 10 wraps the outer side of the flame-retardant heat-conducting layer 10, an outer sheath 9 wraps the outer sheath 9, and an annular array on the annular side of the outer sheath 9 is provided with an inner groove 11, the arranging direction of the inner groove 11 is the parallel arrangement of the length direction of the cable body 1, the arrangement of the inner groove 11 effectively increases the contact area between the outer sheath 9 and the external environment, so that the heat generated by the wires 5 can be quickly dissipated, the fit relation between the conical protrusions 4 and the inner side wall of the corresponding conical groove 3 is interference fit, so that the reinforcing core wire 12 can be tightly matched and connected with the semicircular embedding ring 2 through the conical protrusions 4, the semicircular embedding ring 2 is made of insulating rubber materials, the shielding layer is attached to the contact part of the semicircular embedding ring 2 and the inner sheath 6, the electromagnetic interference of the close distance parts of two adjacent wires 5 is reduced to the maximum extent, the embedding protrusions are arranged on the outer side of the heat dissipation buffer layer 7, the embedding grooves matched with the embedding protrusions are formed in the inner side of the flame-retardant heat conduction layer 10, the embedding protrusions are embedded into the inner sides of the corresponding embedding grooves, so that the fit and connection between the heat dissipation buffer layer 7 and the flame-retardant heat conduction layer 10 is tighter, the stability of cooperation connection between the guarantee structure, inner sheath 6 and oversheath 9 all adopt insulating rubber material to make, the security of guarantee cable use.

To sum up, can obtain when wire 5 is heated the inflation, the flexible flexibility that semicircle embedding circle 2 insulating rubber itself has, make semicircle embedding circle 2's semi-circular groove inside wall press from both sides tight location to the better embedding of wire 5, guarantee wire 5's positional stability, when wire 5 is cooled and contracts, semicircle embedding circle 2's semi-circular groove inside wall itself presss from both sides tightly with wire 5 interference fit, effectively guarantee wire 5's the cold shrink location nature of receiving, heat dissipation buffer layer 7 can effectually give off the heat, and the protruding setting of embedding on the heat dissipation buffer layer 7, the effectual cable heat dissipation heat conduction area that has increased, increase the stability of being connected between heat dissipation buffer layer 7 and the fire-retardant heat-conducting layer 10 simultaneously, make the produced heat of 5 load current of wire can in time distribute away.

The utility model discloses a control mode comes automatic control through the controller, and the control circuit of controller can realize through the simple programming of technical staff in this field, and the supply also belongs to the common general knowledge in this field, and the utility model discloses mainly used protects mechanical device, so the utility model discloses no longer explain control mode and circuit connection in detail.

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 a reference structure" 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 (6)

1. The utility model provides a high temperature resistant crack control type power cable, includes cable body and enhancement heart yearn, its characterized in that: strengthen the heart yearn and install the central point at the cable body and put, the annular outside symmetry of strengthening the heart yearn is provided with the toper protrudingly, and the outside of strengthening the heart yearn is provided with semicircle embedding circle, and the annular inboard of semicircle embedding circle is provided with the taper groove with the protruding looks adaptation of toper, and the protruding corresponding taper groove inboard of embedding of toper, the annular embedding of semicircle embedding circle have four wires, the parcel has the inner sheath on the wire, and the outside of semicircle embedding circle is provided with the heat dissipation buffer layer, and the gap packing between heat dissipation buffer layer and the semicircle embedding circle has heat dissipation insulating filler, and the outside parcel of heat dissipation buffer layer has fire-retardant heat-conducting layer, and the outside parcel of fire-retardant heat-conducting layer has the oversheath.

2. The high temperature resistant and crack resistant power cable according to claim 1, characterized in that: the annular side surface of the outer sheath is provided with inner grooves in an annular array, and the inner grooves are arranged in parallel along the length direction of the cable body.

3. The high temperature resistant and crack resistant power cable according to claim 1, characterized in that: the matching relationship between the conical protrusions (4) and the inner side walls of the corresponding conical grooves (3) is interference fit.

4. The high temperature resistant and crack resistant power cable according to claim 1, characterized in that: the semi-circle embedding ring is made of an insulating rubber material, and a shielding layer is attached to a contact part of the semi-circle embedding ring and the inner sheath.

5. The high temperature resistant and crack resistant power cable according to claim 1, characterized in that: the outside of heat dissipation buffer layer is provided with the embedding and swells, and the inboard of fire-retardant heat-conducting layer is seted up the embedded groove with the protruding looks adaptation of embedding, and the embedding is protruding to be embedded corresponding embedded groove inboard.

6. The high temperature resistant and crack resistant power cable according to claim 1, characterized in that: the inner sheath and the outer sheath are both made of insulating rubber materials.

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