CN211016619U

CN211016619U - Double-coaxial cable with better torsion resistance for nuclear power detection equipment

Info

Publication number: CN211016619U
Application number: CN201921887901.1U
Authority: CN
Inventors: 潘荣圣
Original assignee: Shanghai Youchuang Electronic Engineering Co ltd
Current assignee: Shanghai Youchuang Electronic Engineering Co ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-07-14
Anticipated expiration: 2029-11-05

Abstract

The utility model discloses a double coaxial cable with better torsion resistance for nuclear power detection equipment, which belongs to the technical field of double coaxial cables for nuclear power detection equipment, a flame-retardant wrapping insulating shielding layer is fixedly wrapped on the inner side wall of a wrapping tape, a reinforcing layer is fixedly wrapped on the inner side wall of the wrapping insulating shielding layer, a steel strip shielding sleeve is fixedly bonded on the inner wall of the reinforcing layer, an outer conductor is fixedly arranged on the inner side wall of the steel strip shielding sleeve, an inner conductor is arranged at the center of the inner cavity of the outer conductor, an insulating filling layer is filled between the outer conductor and the inner conductor, torsion-resistant limiting convex strips are uniformly and fixedly assembled between the steel strip shielding sleeve and the reinforcing layer, reinforcing ribs are uniformly arranged in the inner cavity of the wrapping insulating shielding layer, outer sheaths are wrapped on the outer walls of the reinforcing ribs, and two adjacent groups of the torsion-resistant supporting ribs are fixedly connected between the outer sheaths, thereby promoting better insulation shielding performance and torsion strength of the cable.

Description

Double-coaxial cable with better torsion resistance for nuclear power detection equipment

Technical Field

The utility model relates to a nuclear power detection equipment is with two coaxial cable technical field, specifically is a nuclear power detection equipment is with better two coaxial cable of anti torsional properties.

Background

Along with the national demand for clean energy is higher and higher, nuclear power generation has been promoted gradually in the domestic power generation proportion, the domestic realization of nuclear power is steady, the mineral insulated cable that is adopting at present is mostly double coaxial cable, the insulating nature between its wire needs to be considered to double coaxial cable simultaneously, consider the environment that the cable was located simultaneously, if when using under the adverse circumstances, the back and forth dragging of cable can make the inside distortion of cable so that cut off, arouse the insulating layer to break simultaneously easily and cause the cable short circuit, make the operational environment of control cable restricted great, for this reason, we propose a double coaxial cable that nuclear power detection equipment used anti-torsion performance is better.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a better two coaxial cable of anti torsional properties for nuclear power detecting equipment to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a double coaxial cable with better torsion resistance for nuclear power detection equipment comprises a flame-retardant polyolefin sheath, the inner side wall of the flame-retardant polyolefin sheath is fixedly extruded with a flame-retardant wrapping tape, the inner side wall of the flame-retardant wrapping tape is fixedly extruded with a wrapping insulating shielding layer, a reinforcing layer is fixedly extruded on the inner side wall of the lapping insulating shielding layer, a steel strip shielding sleeve is fixedly bonded on the inner wall of the reinforcing layer, an outer conductor is fixedly arranged on the inner side wall of the steel belt shielding sleeve, an inner conductor is arranged at the center of the inner cavity of the outer conductor, an insulation filling layer is filled between the outer conductor and the inner conductor, anti-torsion limit convex strips are uniformly and fixedly assembled between the steel belt shielding sleeve and the reinforcing layer, reinforcing ribs are uniformly arranged in the inner cavity of the wrapping insulating shielding layer, outer sheaths wrap the outer walls of the reinforcing ribs, and anti-torsion supporting ribs are fixedly connected between every two adjacent groups of the outer sheaths.

Preferably, the reinforcing rib strips are arranged to be high-strength aramid yarn bundle synthetic reinforcing cores, the reinforcing rib strips are uniformly arranged along the circumferential direction of the wrapping insulating and shielding layer, and single group of the reinforcing rib strips are arranged along the length direction of the cable.

Preferably, the anti-torsion support rib is arranged along the length direction of the cable in an intermittent manner, the outer sheath is a rubber sleeve, and the outer sheath is fixedly bonded on the outer wall of the reinforcing rib through a PU (polyurethane) adhesive layer.

Preferably, evenly set up the arc spacing groove with the spacing sand grip looks adaptation of antitorque commentaries on classics along the circumferencial direction on the inside wall of enhancement layer, and the arc spacing groove is seted up along the length direction of cable, just the spacing sand grip of antitorque commentaries on classics passes through the PU glue film and fixes the bonding at the spacing inslot.

Preferably, the wrapping insulating and shielding layer is a cross-linked polyethylene insulating layer, a flame-retardant fireproof asbestos filling rope is nested in an inner cavity of the cross-linked polyethylene insulating layer, and the flame-retardant fireproof asbestos filling rope is arranged along the length direction of the cable.

Preferably, the surface of the flame-retardant polyolefin sheath is uniformly provided with uneven patterns, and the outer wall of the flame-retardant polyolefin sheath is sprayed with a wear-resistant layer.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the advantages of reasonable design, can greatly improve the insulating fire-retardant fire resistance of cable through fire-retardant polyolefin sheath, fire-retardant wrapping band can increase the compactness of cable, improve tensile strength simultaneously, realize the insulation shielding effect to the cable through wrapping the insulating shielding layer, can greatly increase the shielding property of inner conductor and outer conductor, realize the isolation of inner conductor and outer conductor through the insulating filling layer simultaneously, prevent both from generating signal interference, can reduce the cable attenuation component that the cable arouses, reduce the cable loss, can guarantee that outer conductor and inner conductor have good insulating electrical property through the steel band shield cover, can prevent current from leaking, reduce the loss, and the steel band shield cover can homogenize the electric field, can also do ground protection, can guarantee the anti-torsion performance of cable through the fixed assembly of anti-torsion spacing sand grip and enhancement layer simultaneously, in addition, the tensile resistance of the cable is improved through the reinforcing ribs, the outer sheath is sleeved on the outer wall of the reinforcing ribs and connected through the anti-torsion supporting ribs, the torsion resistance of the cable is improved, and therefore the cable is enabled to have good insulation shielding performance and torsion resistance.

Drawings

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

In the figure: 1 flame-retardant polyolefin jacket, 2 flame-retardant wrapping tapes, 3 wrapping insulating shielding layers, 4 reinforcing layers, 5 steel belt shielding sleeves, 6 outer conductors, 7 inner conductors, 8 insulating filling layers, 9 anti-torsion limiting convex strips, 10 reinforcing ribs, 11 outer sheaths and 12 anti-torsion supporting ribs.

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.

Referring to fig. 1, the present invention provides a technical solution: a double coaxial cable with good torsion resistance for nuclear power detection equipment comprises a flame-retardant polyolefin sheath 1, a flame-retardant wrapping tape 2 is fixedly extruded on the inner side wall of the flame-retardant polyolefin sheath 1, a wrapping insulating and shielding layer 3 is fixedly extruded on the inner side wall of the flame-retardant wrapping tape 2, a reinforcing layer 4 is fixedly extruded on the inner side wall of the wrapping insulating and shielding layer 3, a steel strip shielding sleeve 5 is fixedly bonded on the inner wall of the reinforcing layer 4, an outer conductor 6 is fixedly arranged on the inner side wall of the steel strip shielding sleeve 5, an inner conductor 7 is arranged at the center of an inner cavity of the outer conductor 6, an insulating and filling layer 8 is filled between the outer conductor 6 and the inner conductor 7, torsion-resistant limiting convex strips 9 are uniformly and fixedly assembled between the steel strip shielding sleeve 5 and the reinforcing layer 4, reinforcing ribs 10 are uniformly arranged in the inner cavity of the wrapping insulating and shielding layer 3, outer sheaths 11 are wrapped on the outer walls of the reinforcing ribs 10, and torsion-resistant supporting ribs 12 are fixedly connected, the flame-retardant cable has the advantages that the flame-retardant insulating performance and the fire resistance of the cable can be greatly improved through the flame-retardant polyolefin sheath 1, the compactness of the cable can be improved through the flame-retardant wrapping tape 2, the tensile strength is improved, the insulating shielding effect on the cable is realized through the wrapping insulating shielding layer 3, the shielding performance of the inner conductor 7 and the outer conductor 6 can be greatly improved, the isolation of the inner conductor 7 and the outer conductor 6 is realized through the insulating filling layer 8, the signal interference between the inner conductor and the outer conductor can be prevented, the cable attenuation component caused by the cable can be reduced, the cable loss is reduced, the outer conductor 6 and the inner conductor 7 can be ensured to have good insulating electrical performance through the steel belt shielding sleeve 5, the current leakage can be prevented, the loss is reduced, the steel belt shielding sleeve 5 can homogenize an electric field, the grounding protection can also be performed, and the torsion resistance of the cable can be ensured through the, in addition, the tensile resistance of the cable is improved through the reinforcing ribs 10, the outer sheath 11 is sleeved on the outer wall of the reinforcing ribs 10, and the outer sheath 11 is connected through the anti-torsion supporting ribs 12, so that the torsion resistance of the cable is improved, and the cable is enabled to have better insulation shielding performance and torsion resistance strength.

Referring to fig. 1, the reinforcing ribs 10 are arranged to be high-strength aramid yarn bundles to form a reinforcing core, the reinforcing ribs 10 are uniformly arranged along the circumferential direction of the wrapped insulating and shielding layer 3, and a single group of reinforcing ribs 10 are arranged along the length direction of the cable, so that the cable can be protected in the circumferential direction, and the reinforcing ribs 10 arranged intermittently can protect the cable in the length direction;

the anti-torsion support ribs 12 are arranged discontinuously along the length direction of the cable, the outer sheath 11 is a rubber sleeve, and the outer sheath 11 is fixedly bonded on the outer wall of the reinforcing rib 10 through a PU (polyurethane) adhesive layer;

referring to fig. 1, arc-shaped limiting grooves matched with the anti-torsion limiting convex strips 9 are uniformly formed in the inner side wall of the reinforcing layer 4 along the circumferential direction, the arc-shaped limiting grooves are formed in the length direction of the cable, and the anti-torsion limiting convex strips 9 are fixedly bonded in the limiting grooves through a PU glue layer, so that the fixing and limiting in the circumferential direction between the reinforcing layer 4 and the steel belt shielding sleeve 5 can be realized through the anti-torsion limiting convex strips 9, and the anti-torsion performance of the cable is improved;

the wrapping insulating and shielding layer 3 is a cross-linked polyethylene insulating layer, a flame-retardant and fireproof asbestos filling rope is nested in an inner cavity of the cross-linked polyethylene insulating layer and arranged along the length direction of the cable, so that the shielding property of the cable is improved, and meanwhile, the cable has better fire resistance and flame retardance;

uneven patterns are uniformly formed on the surface of the flame-retardant polyolefin sheath 1, and a wear-resistant layer is sprayed on the outer wall of the flame-retardant polyolefin sheath 1, so that the wear resistance of the cable is improved.

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 a better two coaxial cable of anti torsional property for nuclear power detecting equipment which characterized in that: comprises a flame-retardant polyolefin jacket (1), wherein the inner side wall of the flame-retardant polyolefin jacket (1) is fixedly extruded with a flame-retardant winding belt (2), the inner side wall of the flame-retardant winding belt (2) is fixedly extruded with a winding insulating and shielding layer (3), the inner side wall of the winding insulating and shielding layer (3) is fixedly extruded with a reinforcing layer (4), the inner wall of the reinforcing layer (4) is fixedly bonded with a steel belt shielding sleeve (5), the inner side wall of the steel belt shielding sleeve (5) is fixedly provided with an outer conductor (6), the center of the inner cavity of the outer conductor (6) is provided with an inner conductor (7), an insulating filling layer (8) is filled between the outer conductor (6) and the inner conductor (7), an anti-torsion limit convex strip (9) is uniformly fixedly assembled between the steel belt shielding sleeve (5) and the reinforcing layer (4), and reinforcing ribs (10) are uniformly arranged in the inner cavity of the winding insulating and shielding layer (3), the outer walls of the reinforcing ribs (10) are wrapped with outer sheaths (11), and anti-torsion supporting ribs (12) are fixedly connected between every two adjacent outer sheaths (11).

2. The double coaxial cable with better torsion resistance for the nuclear power detection equipment according to claim 1, is characterized in that: the reinforcing rib strips (10) are arranged to be high-strength aramid yarn bundle synthetic reinforcing cores, the reinforcing rib strips (10) are evenly arranged along the circumferential direction of the wrapping insulating shielding layer (3), and single groups of the reinforcing rib strips (10) are arranged along the length direction of the cable.

3. The double coaxial cable with better torsion resistance for the nuclear power detection equipment according to claim 2, is characterized in that: the anti-torsion support rib (12) is arranged along the length direction of the cable in an intermittent mode, the outer sheath (11) is a rubber sleeve, and the outer sheath (11) is fixedly bonded to the outer wall of the reinforcing rib (10) through a PU (polyurethane) adhesive layer.

4. The double coaxial cable with better torsion resistance for the nuclear power detection equipment according to claim 1, is characterized in that: the arc-shaped limiting groove matched with the anti-torsion limiting convex strip (9) is evenly formed in the inner side wall of the reinforcing layer (4) along the circumferential direction, the arc-shaped limiting groove is formed in the length direction of the cable, and the anti-torsion limiting convex strip (9) is fixedly bonded in the limiting groove through the PU adhesive layer.

5. The double coaxial cable with better torsion resistance for the nuclear power detection equipment according to claim 1, is characterized in that: the wrapping insulating shielding layer (3) is a cross-linked polyethylene insulating layer, a flame-retardant fireproof asbestos filling rope is arranged in an inner cavity of the cross-linked polyethylene insulating layer in a nested mode, and the flame-retardant fireproof asbestos filling rope is arranged along the length direction of the cable.

6. The double coaxial cable with better torsion resistance for the nuclear power detection equipment according to claim 1, is characterized in that: uneven patterns are uniformly arranged on the surface of the flame-retardant polyolefin sheath (1), and a wear-resistant layer is sprayed on the outer wall of the flame-retardant polyolefin sheath (1).