CN215220331U

CN215220331U - High-strength flexible mineral insulated cable

Info

Publication number: CN215220331U
Application number: CN202121751412.0U
Authority: CN
Inventors: 孟子义; 王月超; 赵守峰
Original assignee: Hebei Yalong Cable Co ltd
Current assignee: Hebei Yalong Cable Co ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2021-12-17
Anticipated expiration: 2031-07-30

Abstract

The utility model discloses a high-strength flexible mineral substance insulated cable, which relates to the related technical field of cables and comprises a cable body, a copper conductor, an outer sheath, a copper sheath and a mica layer, wherein the copper conductor is arranged inside the cable body, the outer sheath is arranged on the outer surface of the cable body, the surface of the copper conductor is provided with the mica layer, the copper sheath is arranged on the lower surface of the outer sheath, the surface of the mica layer is provided with a mineral composite insulating layer, the utility model is provided with an inorganic fiber filling layer and a toughening layer, the toughening layer enhances the toughness and the anti-cracking effect of the cable, the tensile property is improved, the inorganic fiber filling layer is formed by cross weaving a plurality of fiber strips, the overall structural strength of the cable is effectively improved, the phenomena that the insulating layer is easily worn out and the electric leakage is caused, even the conductor is pulled off and the like are avoided, and the normal use of the cable is ensured, the cable can meet the special emergency in some high-voltage circuits, meet the existing use requirements and improve the practicability of the cable.

Description

High-strength flexible mineral insulated cable

Technical Field

The utility model relates to a relevant technical field of cable specifically is to relate to a flexible mineral substance insulated cable of high strength.

Background

Cables are generally rope-like cables made by stranding several or groups of at least two conductors, each group insulated from each other and often twisted around a center, with a highly insulated covering over the entire outside. The cable has the characteristics of internal electrification and external insulation. The manufacture of wire and cable is quite different from the way most electromechanical products are produced. Electromechanical products typically employ the assembly of parts into components, and the reassembly of multiple parts into a single product, with the product being metered in units or pieces. The wire and cable are in basic unit of measurement of length. All the electric wires and cables are made by processing conductors, and adding insulation, shielding, cabling, sheath and the like layer by layer on the periphery of the conductors to form electric wire and cable products. The more complex the product structure, the more levels are superimposed. With the rapid development of power cable buried laying engineering and the higher requirements for cable protection, the cable protection sleeve is made of Polyethylene (PE) and high-quality steel pipes through sand blasting and shot blasting pretreatment, plastic dipping or coating, and heating and curing processes. It is one of the most commonly used electrically insulating tubes for protecting wires and cables. It is widely used because of its good insulating property, high chemical stability, no rusting, no aging, and adaptability to harsh environment.

The prior art has the following problems: the inside structure of current insulated cable can only accomplish insulation protection's effect generally, and its structural strength is low, appears the insulating layer easily and grinds brokenly and the electric leakage, breaks the condition such as conductor even, can not guarantee the normal use of cable, can't deal with in some high-voltage circuit comparatively special emergency, can not satisfy current user demand, is unfavorable for the use.

SUMMERY OF THE UTILITY MODEL

For solving above-mentioned technical problem, provide a flexible mineral substance insulated cable of high strength, this technical scheme has solved the inside structure of current insulated cable that proposes in the above-mentioned background art and can only accomplish insulation protection's effect generally, and its structural strength is low, appears easily that the insulating layer grinds brokenly and the electric leakage, breaks the condition such as conductor even, can not guarantee the normal use of cable, can't deal with in some high-voltage circuit comparatively special emergency, can not satisfy current user demand, be unfavorable for the problem of use.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

the utility model provides a flexible mineral substance insulated cable of high strength, includes cable body, copper conductor, oversheath, copper sheath and mica layer, the copper conductor sets up the inside at the cable body, the oversheath sets up the surface at the cable body, the surface of copper conductor is provided with the mica layer, the copper sheath sets up the lower surface at the oversheath, the surface on mica layer is provided with mineral composite insulation layer, the upper surface and the oversheath of copper sheath pass through the viscose agent and are connected, the lower surface of copper sheath is provided with fire-retardant layer.

Preferably, the upper surface of mineral composite insulation layer is provided with the layer of toughening, the upper surface on layer of toughening is provided with the inorganic fiber filling layer, the lower surface on fire-retardant layer is provided with separates the oxygen inner liner, the lower surface that separates the oxygen inner liner is provided with fire-resistant isolation layer, the lower surface and the inorganic fiber filling layer of fire-resistant isolation layer are pasted, it passes through the inorganic fiber filling layer with fire-resistant isolation layer and pastes.

Preferably, the copper conductor is a multi-stranded conductor.

Compared with the prior art, the utility model provides a flexible mineral substance insulated cable of high strength possesses following beneficial effect:

the utility model is provided with an inorganic fiber filling layer and a toughening layer, the toughening layer enhances the toughness and the anti-cracking effect of the cable, the tensile property is improved, the inorganic fiber filling layer is formed by cross weaving of a plurality of fiber strips, the overall structural strength of the cable is effectively improved, the situations that the insulating layer is easy to break and the electric leakage is avoided, even the conductor is broken are avoided, through the arrangement of the mineral composite insulating layer, no additional measures are added in the laying process, the oxygen-isolating inner liner layer adopts the substances such as aluminum hydroxide and manganese hydroxide, and the crystal water is released under the high temperature situation, so that the ignition point is reduced to achieve the purpose of fire isolation and even fire prevention, the conductor inside the cable is prevented from being damaged due to overhigh temperature, the utility model ensures the normal use of the cable, can deal with the special emergency situations in some high-voltage circuits, and meets the existing use requirements, the utility model provides the practicality of cable is improved, just the utility model discloses simple structure, convenient to use.

Drawings

Fig. 1 is a schematic view of an internal structure of a high-strength flexible mineral insulated cable according to the present invention;

the reference numbers in the figures are:

1. a copper conductor; 2. a mineral composite insulating layer; 3. a toughening layer; 4. an inorganic fiber filler layer; 5. a refractory barrier layer; 6. an outer sheath; 7. a copper sheath; 8. a flame retardant layer; 9. an oxygen barrier liner layer; 10. a mica layer; 11. a cable body.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

Referring to fig. 1, a flexible mineral substance insulated cable of high strength, including cable body 11, copper conductor 1, oversheath 6, copper sheath 7 and mica layer 10, copper conductor 1 sets up the inside at cable body 11, oversheath 6 sets up the surface at cable body 11, the surface of copper conductor 1 is provided with mica layer 10, copper sheath 7 sets up the lower surface at oversheath 6, the surface of mica layer 10 is provided with mineral composite insulation layer 2, the upper surface of copper sheath 7 passes through the adhesive with oversheath 6 and is connected, the lower surface of copper sheath 7 is provided with fire-retardant layer 8, the setting of fire-retardant layer 8 prevents to damage the inside conductor of cable because of the high temperature.

The upper surface of mineral composite insulation layer 2 is provided with and adds tough layer 3, add tough layer 3 and strengthened the toughness and the crack control effect of cable, the pull resistance has been improved, the upper surface that adds tough layer 3 is provided with inorganic fiber filling layer 4, fire-retardant layer 8's lower surface is provided with separates oxygen inner liner 9, the lower surface that separates oxygen inner liner 9 is provided with fire-resistant isolation layer 5, fire-resistant isolation layer 5's lower surface is pasted with inorganic fiber filling layer 4, add tough layer 3 and paste through inorganic fiber filling layer 4 with fire-resistant isolation layer 5, inorganic fiber filling layer 4 is through many fiber strip cross-weave shaping, the overall structure intensity of cable has effectively been improved, copper conductor 1 is the conductor of many heels.

When the utility model is used, the toughening layer 3 and the inorganic fiber filling layer 4 are arranged in the cable body 11, the toughening layer 3 enhances the toughness and the anti-cracking effect of the cable, the tensile property is improved, the inorganic fiber filling layer 4 is formed by cross weaving of a plurality of fiber strips, the overall structural strength of the cable is effectively improved, no additional measures can be added in the laying process by arranging the mineral composite insulating layer, the oxygen-isolating inner liner layer adopts the substances such as aluminum hydroxide, manganese hydroxide and the like, and releases crystal water under the high temperature condition, so that the ignition point is reduced to achieve the purpose of fire isolation and even fire prevention, the conductor in the cable is prevented from being damaged due to overhigh temperature by arranging the flame-retardant layer 8,

the foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a flexible mineral substance insulated cable of high strength, its characterized in that, includes cable body (11), copper conductor (1), oversheath (6), copper sheath (7) and mica layer (10), copper conductor (1) sets up the inside at cable body (11), oversheath (6) set up the surface at cable body (11), the surface of copper conductor (1) is provided with mica layer (10), copper sheath (7) set up the lower surface at oversheath (6), the surface of mica layer (10) is provided with mineral composite insulation layer (2), the upper surface and the oversheath (6) of copper sheath (7) pass through the viscose and are connected, the lower surface of copper sheath (7) is provided with fire-retardant layer (8).

2. A high strength flexible mineral insulated cable according to claim 1, characterized in that: the upper surface of mineral composite insulation layer (2) is provided with and adds tough layer (3), the upper surface that adds tough layer (3) is provided with inorganic fiber filling layer (4), the lower surface on fire-retardant layer (8) is provided with separates oxygen inner liner (9), the lower surface that separates oxygen inner liner (9) is provided with fire-resistant isolation layer (5), the lower surface and inorganic fiber filling layer (4) of fire-resistant isolation layer (5) are pasted, it pastes through inorganic fiber filling layer (4) with tough layer (3) and fire-resistant isolation layer (5).

3. A high strength flexible mineral insulated cable according to claim 1, characterized in that: the copper conductor (1) is a plurality of stranded conductors.