WO2018059434A1

WO2018059434A1 - Electric cable for use in searching and imaging

Info

Publication number: WO2018059434A1
Application number: PCT/CN2017/103649
Authority: WO
Inventors: 黄冬莲; 韩英健; 吴新友; 吴怀喜
Original assignee: 深圳市联嘉祥科技股份有限公司
Priority date: 2016-09-27
Filing date: 2017-09-27
Publication date: 2018-04-05
Also published as: CN107871551A

Abstract

Disclosed in the present invention is a cable for use in searching and imaging, which comprises, sequentially from inside to outside, a cable core, a filling cotton cord, an internal protective layer wrapping over outer portions of the core and the filling cotton cord, a fiber-reinforced composite plastic strip, a polyester band, a fiber braid layer, and a jacket layer wrapping over an outer portion of the fiber-reinforced composite plastic strip. The use of the fiber-reinforced composite plastic strip may give a finished cable product stronger ductility, which solves the problems such as twisting and knotting when using regular cables; moreover, the fiber-reinforced composite plastic strip itself is light-weight, has excellent insulation and strong environmental resistance, thus capable of strengthening the environmental resistance of the cable; furthermore, the number of the fiber-reinforced composite plastic strips may be used to make adaptive adjustments to the structure of the cable for use in searching and imaging, thereby maintaining the overall structural stability thereof and enhancing the adaptive ability of the searching cable; at the same time, by using thermoplastic polyurethane (TPU) as the external jacket, the cable has characteristics such as wear resistance, oil resistance, and desirable elasticity, and is suitable for use in complicated situations such as underground networks, and the service life of the cable is increased.

Description

Search imaging cable

Technical field

The present invention relates to a wire and cable, and more particularly to a wire and cable for toughness and environmental resistance for imaging.

Background technique

With the continuous expansion of the underground pipe network, in the daily maintenance and abnormal handling, the visual control inside the pipe network is particularly important, and the performance of the cable as the transmission nerve is very high, especially when the cable is facing a complex environment. Environmental resistance and toughness in the face of complex pipe network channels.

technical problem

Existing cables are generally armored and PVC jacketed. The armored structure increases the weight of the wire and increases the hardness, which leads to inconvenient movement, difficult manual work, and is not easy to bend. The PVC sheath has poor environmental resistance, especially in harsh environments such as oil, acid, alkali and rodents. In the pipe network, it is easy to crack and age. Therefore, the above-mentioned existing cables are difficult to meet the performance requirements of searching for wire and cable for imaging in a complicated and harsh environment.

Therefore, it is necessary to provide a wire and cable for searching and imaging which can be used in a complicated and harsh environment and has high toughness and high environmental resistance.

Problem solution

Technical solution

The technical problem to be solved by the present invention is to provide a toughness and environment-resistant search imaging cable for the above-mentioned drawbacks of the prior art.

The technical solution adopted by the present invention to solve the technical problem thereof is:

Providing a cable for searching imaging, including a cable core, a filled cotton rope, and a package from the inside out

An inner sheath covering the outer portion of the cable core and the filled cotton cord, a fiber reinforced composite plastic strip, a polyester tape, a fiber woven layer, and a sheath layer coated on the outer side of the fiber reinforced composite plastic strip.

Preferably, the cable core comprises a braided insulated core wire and a first insulated core;

The braided insulated core comprises, in order from the inside to the outside, an insulating core group, and an aluminum sheathed on the outside of the insulating core group a foil and a braid layer coated on the outside of the aluminum foil; the insulating core group is twisted from the second insulated core;

The first insulated wire core is composed of a plurality of first stranded conductors and a first insulating layer coated on the outside of the first stranded conductor; the first stranded conductor is stranded by a plurality of fine tinned copper wires to make;

The second insulated core is composed of a plurality of second stranded conductors and a second insulating layer coated on the outside of the second stranded conductor; the second stranded conductor is stranded by a plurality of fine tinned copper wires to make;

The braid layer is woven from a plurality of fine tinned copper wires;

The first insulating layer and the second insulating layer are each composed of a high density polyethylene material.

Preferably, the tinned copper monofilaments of the first stranded conductor and the second stranded conductor are each less than 0.2 mm in diameter, and the elongation of the monofilaments is greater than 20%.

Preferably, the tinned copper monofilament of the first stranded conductor has a diameter of 0.18 mm; and the tinned copper monofilament of the second stranded conductor has a diameter of 0.16 mm.

Preferably, the plurality of the first stranded conductors and the plurality of the second stranded conductor bundle twisting pitches are each less than or equal to 14 times the outer diameter of the stranded strands.

Preferably, the plurality of the first stranded conductors and the plurality of the second stranded conductors have a strand twist pitch of 12 times the stranded outer diameter.

Preferably, the tinned copper monofilament of the plurality of braided layers in the woven insulating core has a diameter of not less than 0.1 mm.

Preferably, the tinned copper monofilament of the plurality of braided layers in the woven insulating core has a diameter of 0.12 mm.

Preferably, the inner sheath layer and the sheath layer are each composed of a black TPU material having an average thickness of not less than 0.5 mm; the fiber reinforced composite plastic strip has a diameter of not more than 1.5 mm; and the fiber woven layer is woven by fiber filaments. The number of braided strands is 96 mesh; the weaving pitch is 36.0 mm; and the cable further comprises a filled cotton cord and a polyester tape auxiliary material.

Preferably, the fiber reinforced composite plastic strip has a diameter of 1.3 mm.

Advantageous effects of the invention

Beneficial effect

The beneficial effects of the technical solution of the present invention are as follows:

(1) The existing mature process structure and production mode are adopted for the conductor, insulation and weaving in the cable core to ensure the reliability and stability of the transmission parts;

(2) The cable is wrapped around the cable core by fiber reinforced composite plastic strip, using fiber reinforced composite The toughness of the plastic strip itself makes the finished cable have strong toughness, which effectively solves the defects such as twisting and knotting of the ordinary cable in use; and the fiber reinforced composite plastic strip itself has light weight, good insulation and strong environmental resistance, and increases The environmental resistance of the cable;

(3) The cable adopts TPU as the outer sheath. The TPU has the characteristics of wear resistance, oil resistance and good elasticity. It is suitable for complex occasions such as underground pipe network and increases the service life of the cable.

(4) Adding cotton rope and polyester tape auxiliary material to the cable core to make the cable core structure stable, effectively avoiding the risk of abnormality caused by cable movement caused by cable movement.

Brief description of the drawing

DRAWINGS

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, in which:

1 is a schematic cross-sectional structural view of a cable for searching for imaging in a first embodiment of the present invention;

Fig. 2 is a cross-sectional structural view showing a cable for searching for imaging in a second embodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional structural view showing a search imaging cable according to a first embodiment of the present invention. The search imaging cable includes a cable core, a filled cotton cord 3, an inner sheath 4 coated on the outer side of the cable core and the filled cotton cord 3, a fiber reinforced composite plastic strip 5, a polyester strip 6, and a fiber braid 7 And a sheath layer 8 coated on the outside of the fiber reinforced composite plastic strip 5;

Wherein the cable core comprises a braided insulated core 1 and a first insulated core 2;

The braided insulated core 1 includes, in order from the inside to the outside, an insulating core group, an aluminum foil 12 coated on the outside of the insulating core group, and a braid layer 13 coated on the outside of the aluminum foil 12; the insulating core group is insulated by a second insulation The core 11 is twisted together;

The first insulated core 2 is composed of a plurality of first stranded conductors 21 and a first insulating layer 22 coated on the outside of the first stranded conductors 21;

The second insulated core 11 is composed of a plurality of second stranded conductors 111 and coated on the outside of the second stranded conductor 111 The second insulating layer 112 is configured;

The first stranded conductor 21 and the second stranded conductor 111 are each formed by stranding a plurality of fine tinned copper wires, and the tinned copper monofilaments are each less than 0.2 mm in diameter, and the elongation of the monofilaments is greater than 20%. Preferably, the tinned copper monofilament of the first stranded conductor 21 has a diameter of 0.16 mm; and the tinned copper monofilament of the second stranded conductor 111 has a diameter of 0.18 mm.

The braided layer 13 of the plurality of the woven insulating cores 1 is woven from a plurality of fine tinned copper wires having a diameter of not less than 0.1 mm, preferably 0.12 mm.

The bundle twisting pitch of the plurality of the first stranded conductors 21 and the plurality of the second stranded conductors 111 is less than or equal to 14 times, preferably 12 times, the outer diameter of the strands.

The first insulating layer 22 and the second insulating layer 112 are each composed of a high density polyethylene material.

The inner sheath 4 and the sheath layer 8 are each made of a black TPU material, and the average thickness is not less than 0.5 mm.

The fiber reinforced composite plastic strip 5 has a diameter of not more than 1.5 mm, preferably 1.3 mm.

The fiber woven layer 7 is woven from filaments, and the number of woven strands is 96 mesh; the weaving pitch is 36.0 mm.

In addition, the cable further includes a filled cotton cord, a polyester tape auxiliary material.

It should be noted that, in practical applications, the requirements for searching for imaging cables are different. If the structure of the braided insulated core 1 changes, the number of the first insulated cores 2 changes, etc., the search imaging cable provided by the present invention is provided. It can be adjusted by increasing or decreasing the number of fiber-reinforced composite plastic strips 5, so that adaptive adjustment can be made according to different requirements, thereby maintaining the overall structural stability of the cable.

Fig. 2 shows a second embodiment of the present invention, in which the electric wire core of the search imaging cable is twisted by the braided insulated core wire 1 and the seven first insulated core wires 2, and the outer portion of the cable core is also the same The inner sheath 4, the fiber reinforced composite plastic strip 5, the fiber woven layer 7, and the sheath layer 8 are coated, and the specific structure and parameter setting thereof are the same as those in the first embodiment.

The overall structure of the image forming cable of the present invention can be ensured by adjusting the number of the fiber-reinforced composite plastic strips 5 as needed. This adaptable adjustment is simple and easy, and does not affect the performance of the production and wire and cable itself, and has strong applicability.

According to the analysis of the above two embodiments, in the search imaging cable of the present invention, the fiber reinforced composite plastic strip is wrapped around the cable core, and the toughness of the fiber reinforced composite plastic strip itself is used to make the finished cable have strong toughness. Effectively solve the problems of distortion, knotting, etc. caused by ordinary cables in use; The fiber reinforced composite plastic strip itself has the advantages of light weight, good insulation and environmental resistance, and increases the environmental resistance of the cable; the cable adopts TPU as the outer sheath, and the TPU has the characteristics of wear resistance, oil resistance and elasticity, and is suitable for In complex occasions such as underground pipe network, the service life of the cable is increased; in order to meet the needs of practical applications, the search imaging cable of the present invention utilizes the number of fiber reinforced composite plastic strips to adaptively adjust the cable structure for searching and imaging, thereby maintaining The overall structure is stable, and the adaptive adjustment is simple and greatly enhances the adaptability of the search imaging cable.

A person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium. The storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Claims

The utility model relates to a cable for searching imaging, which comprises, in order from the inside to the outside, a cable core, a filled cotton rope (3), an inner sheath (4) coated on the outer side of the cable core and the filled cotton rope, and a fiber. A reinforced composite plastic strip (5), a polyester tape (6), a fiber woven layer (7), and a sheath layer (8) coated on the outside of the fiber reinforced composite plastic strip.
The cable for searching and imaging according to claim 1, wherein the cable core comprises a braided insulated core wire (1) and a first insulated core (2);

The braided insulated core (1) includes, in order from the inside to the outside, an insulating core group, an aluminum foil (12) coated on the outside of the insulating core group, and a braid layer (13) coated on the outside of the aluminum foil (12); The insulating core group is twisted by the second insulated core (11);

The first insulated core (2) is composed of a plurality of first stranded conductors (21) and a first insulating layer (22) coated on the outside of the first stranded conductor (21); the first stranded The conductor (21) is formed by stranding a plurality of fine tinned copper wires;

The second insulated core (11) is composed of a plurality of second stranded conductors (111) and a second insulating layer (112) coated on the outside of the second stranded conductors (111); the second stranded The conductor (111) is formed by stranding a plurality of fine tinned copper wires;

The braid layer (13) is woven from a plurality of fine tinned copper wires;

The first insulating layer (22) and the second insulating layer (112) are each composed of a high density polyethylene material.
The search imaging cable according to claim 2, wherein the first stranded conductor (21) and the second stranded conductor (111) and the tinned copper monofilament are both smaller than 0.2 mm in diameter, monofilament The elongation is greater than 20%.
The search imaging cable according to claim 3, wherein the tinned copper monofilament of the first stranded conductor (21) has a diameter of 0.18 mm; and the second stranded conductor (111) is tinned. The copper monofilament has a diameter of 0.16 mm.
The search imaging cable according to claim 2, wherein a plurality of said first stranded conductors (21) and said plurality of said second stranded conductors (111) have a twisted pitch of less than or Equal to 14 times the outer diameter of the strand.
The search imaging cable according to claim 5, wherein the plurality of the first stranded conductors (21) and the plurality of the second stranded conductors (111) are twisted and twisted by a twist 12 times the outer diameter.
The search imaging cable according to claim 2, wherein the tinned copper monofilament of the braided layer (13) in the plurality of braided insulating cores (1) has a diameter of not less than 0.1 mm.
The search imaging cable according to claim 7, wherein the tinned copper monofilament of the braided layer (13) of the plurality of the woven insulating cores (1) has a diameter of 0.12 mm.
The search imaging cable according to claim 1, wherein the inner sheath (4) and the sheath layer (8) are each made of a black TPU material, and the average thickness is not less than 0.5 mm; The composite plastic strip (5) has a diameter of not more than 1.5 mm; the fiber woven layer (7) is woven from a fiber strand, the number of braided strands is 96 mesh, and the weaving pitch is 36.0 mm; and the cable further includes a filled cotton Rope and polyester tape aids.
The search imaging cable according to claim 9, wherein the fiber reinforced composite plastic strip (5) has a diameter of 1.3 mm.