CN218159748U

CN218159748U - Flame-retardant tensile instrument signal cable

Info

Publication number: CN218159748U
Application number: CN202222421359.9U
Authority: CN
Inventors: 陈玉超; 柏晶
Original assignee: Anhui Ji'an Special Wire And Cable Manufacturing Co ltd
Current assignee: Anhui Ji'an Special Wire And Cable Manufacturing Co ltd
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2022-12-27
Anticipated expiration: 2032-09-09

Abstract

The utility model discloses a fire-retardant tensile type instrument signal cable belongs to cable technical field, the cable core comprises a cable core, the cable core outer wall is fixed with the insulating layer, insulating layer outer wall is fixed with the inner protective layer, the inner protective layer outer wall is fixed with the shielding layer, the shielding layer outer wall is fixed with the supporting layer, the supporting layer external fixation has the filling layer, the filling layer outer wall is fixed with fire-retardant layer, fire-retardant layer outer wall is fixed with the outer protective layer. According to the flame-retardant tensile type instrument signal cable, the supporting layer and the inner protective layer are arranged and matched with each other, so that the deformation resistance of each other can be effectively enhanced, and a cable core is effectively protected from deformation; meanwhile, the flame-retardant layer is arranged and can effectively prevent the cable from being burnt by external open fire, so that the cable core is prevented from being burnt and signals cannot be transmitted.

Description

Flame-retardant tensile instrument signal cable

Technical Field

The utility model belongs to the technical field of the cable, especially, relate to a fire-retardant tensile type instrument signal cable.

Background

In the use process of modern machines, in order to facilitate users to observe the running state of the machines in real time, users often install a plurality of meters in the machines, and the meters are electrically connected with the machines through cables.

Because the instrument is connected with the machine through the cable, the use safety of the cable is directly related to the stability of the instrument for receiving signals, particularly the cable can bear certain high temperature and even needs to be flame-retardant, and meanwhile, the cable also needs to effectively resist certain deformation; the conventional signal cable has certain elasticity, but is difficult to resist burning and pulling, which can block the signal cable from transmitting signals.

Therefore, the flame-retardant tensile instrument signal cable is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the prior art, the fire-retardant and the anti-tensile problem of dragging the performance not enough of current signal cable, and the fire-retardant tensile type instrument signal cable who provides.

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

the utility model provides a fire-retardant tensile type instrument signal cable, includes the cable core, the cable core outer wall is fixed with the insulating layer, insulating layer outer wall is fixed with the inner protective layer, the inner protective layer outer wall is fixed with the shielding layer, the shielding layer outer wall is fixed with the supporting layer, the supporting layer external fixation has the filling layer, the filling layer outer wall is fixed with fire-retardant layer, fire-retardant layer outer wall is fixed with the outer protective layer.

The supporting layer and the inner protective layer are arranged and matched with each other to effectively enhance the deformation resistance of each other, so that the cable core is effectively protected from deformation; set up fire-retardant layer simultaneously, fire-retardant layer can prevent effectively that external naked light from burning out the cable to prevent that the cable core from being burnt out and unable transmission signal.

Preferably, the insulating layer is a fiberglass layer.

Through setting up glass fiber layer insulating layer, glass fiber has fabulous insulating properties, and glass fiber also has certain adiabatic ability simultaneously, can block inside external heat transfer to the cable core to a certain extent.

Preferably, the inner protection layer is an XLPE layer, and the thickness of the inner protection layer is 0.2-0.25 mm.

Through setting up XLPE internal protection layer, the PE through crosslinking modification has good performance, not only can effectively increase the tensile ability of cable, also can effectively increase the fire behaviour of whole cable simultaneously.

Preferably, the shielding layer is a lead sheath shielding layer, and the thickness of the shielding layer is 1mm.

Through setting up lead sheath shielding layer to 1 millimeter, can effectively reduce the whole weight of cable when guaranteeing lead sheath shielding layer efficiency.

Preferably, the supporting layer is a steel wire mesh sleeve layer, and the cross section of the steel wire is arranged in a triangular shape.

Through setting up the cross section of steel wire into triangle-shaped, triangle-shaped can effectively bear the pressure that the external world applyed to the cable to this deformation appears effectively avoiding the cable.

Preferably, the filling layer is a flame-retardant viscose fiber layer, and the thickness of the filling layer is larger than that of the support layer.

Through setting up fire-retardant viscose fibrous layer, fire-retardant viscose fibre can be absorbed into between the steel wire netting of supporting layer, can prevent effectively that the axial deformation from appearing in the steel wire netting to this anti deformability who further increases the cable.

Preferably, the flame retardant layer is a PBI fiber layer.

Through setting up the fire-retardant layer of PBI fibre, PBI has good mechanical property and electrical insulation nature, and PBI also has fabulous flame resistance nature and puts out nature certainly simultaneously, can effectively increase the fire behaviour of cable.

Preferably, the outer protection layer is a polyvinyl chloride layer, and the thickness of the outer protection layer is 1-1.2mm.

By arranging the polyvinyl chloride outer protective layer, the polyvinyl chloride has good tensile strength and impact strength, so that the tensile capacity of the whole cable is improved.

To sum up, the utility model discloses a technological effect and advantage: according to the flame-retardant tensile type instrument signal cable, the steel wire sleeve supporting layer and the flame-retardant viscose fiber filling layer are arranged and matched, so that the deformation resistance of each other can be effectively enhanced, and the cable core is effectively protected from deformation; set up fire-retardant layer simultaneously, fire-retardant layer can prevent effectively that external naked light from burning out the cable to prevent that the cable core from being burnt out and unable transmission signal.

Drawings

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

FIG. 2 is a schematic cross-sectional structure of the present invention;

FIG. 3 is a schematic view of the overall structure of the supporting layer of the present invention;

fig. 4 is a partial sectional view of the support layer of the present invention.

In the figure: 1. a cable core; 2. an insulating layer; 3. an inner protective layer; 4. a shielding layer; 5. a support layer; 6. a filling layer; 7. a flame retardant layer; 8. and an outer protective layer.

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.

Referring to fig. 1-3, the flame-retardant tensile instrument signal cable comprises a cable core 1, wherein an insulating layer 2 is fixed on the outer wall of the cable core 1, an inner protective layer 3 is fixed on the outer wall of the insulating layer 2, a shielding layer 4 is fixed on the outer wall of the inner protective layer 3, a supporting layer 5 is fixed on the outer wall of the shielding layer 4, and the supporting layer 5 and the inner protective layer 3 are matched with each other to effectively increase the compression resistance and the tensile resistance of the cable; the outside of supporting layer 5 is fixed with filling layer 6, and the outer wall of filling layer 6 is fixed with fire-retardant layer 7, and the outer wall of fire-retardant layer 7 is fixed with outer protective layer 8.

The insulating layer 2 is a glass fiber layer, the glass fiber has good insulativity, strong heat resistance, good corrosion resistance and high mechanical strength, and when the glass fiber is used in the cable, the insulativity of the cable and the heat insulation performance of the cable can be effectively improved, and external heat can be effectively prevented from being transferred to the inside of the cable to influence the signal transfer of the cable.

The inner protection layer 3 is an XLPE layer, the thickness of the inner protection layer 3 is 0.2-0.25 mm, the XLPE is PE modified through crosslinking, the PE performance can be greatly improved, the comprehensive performances of the PE, such as mechanical property, environmental stress cracking resistance, chemical corrosion resistance, creep resistance, electrical performance and the like, are remarkably improved, the temperature resistance grade is remarkably improved, the heat-resistant temperature of the PE can be improved to more than 100 ℃ from 70 ℃, and therefore the high-temperature resistance of the cable can be improved while the tensile property of the cable is effectively improved through the XLPE inner protection layer 3.

Shielding layer 4 is the lead sheath shielding layer, and shielding layer 4 thickness is 1mm, because lead sheath density is great, the thickness of lead sheath can set up to be thinner, can effectively reduce the whole weight of cable.

Referring to fig. 2-4, supporting layer 5 is wire net jacket layer, and the cross section of steel wire is triangle-shaped setting, filling layer 6 is fire-retardant viscose fiber layer, and filling layer 6 thickness is greater than supporting layer 5, inside fire-retardant viscose fiber layer can be absorbed into the wire net cover, when the cable modification drives the wire net cover modification, the wire net cover can drive fire-retardant viscose fiber layer modification, fire-retardant viscose fiber layer can hinder the wire net modification this moment, thereby block whole cable modification, with this tensile strength who increases whole cable.

The flame-retardant layer 7 is a PBI fiber layer, the thermal stability of the PBI fiber is more than 500 ℃, and the heat resistance of the whole cable can be effectively improved.

The outer protective layer 8 is a polyvinyl chloride layer, the thickness of the outer protective layer 8 is 1-1.2mm, the polyvinyl chloride has better mechanical property, the tensile strength is about 60MPa, and the impact strength is 5-10 kJ/m < 2 >; and meanwhile, the cable also has excellent dielectric property, and the polyvinyl chloride can protect other internal layers outside the cable and increase the tensile property of the cable to a certain extent.

The working principle is as follows: when the cable is stretched and deformed, the filling layer 6 is deformed along with the supporting layer 5, the steel wire mesh of the supporting layer 5 clamps the flame-retardant viscose fibers in the filling layer 6 to deform, and the flame-retardant viscose fibers block the deformation of the steel wire mesh so as to block the stretching and deformation of the cable; meanwhile, when open fire occurs outside or the temperature rises, the flame-retardant layer 7 consisting of the PBI can effectively improve the heat resistance of the whole cable, and the cable signal transmission is prevented from being blocked after the temperature rises; meanwhile, the flame-retardant viscose fibers are arranged inside the flame-retardant layer 7, so that the flame-retardant performance of the cable can be further improved, the tensile strength and the flame-retardant performance of the whole cable can be effectively guaranteed, and the signals inside the cable can be effectively transmitted completely.

The above, only be the embodiment of the preferred of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, which are designed to be replaced or changed equally, all should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a fire-retardant tensile type instrument signal cable, includes cable core (1), its characterized in that, cable core (1) outer wall is fixed with insulating layer (2), insulating layer (2) outer wall is fixed with inner protective layer (3), inner protective layer (3) outer wall is fixed with shielding layer (4), shielding layer (4) outer wall is fixed with supporting layer (5), supporting layer (5) external fixation has filling layer (6), filling layer (6) outer wall is fixed with fire-retardant layer (7), fire-retardant layer (7) outer wall is fixed with outer protective layer (8).

2. A flame-retardant tensile type instrument signal cable according to claim 1, wherein the insulating layer (2) is a glass fiber layer.

3. The flame-retardant tensile instrument signal cable according to claim 1, wherein the inner protective layer (3) is an XLPE layer, and the thickness of the inner protective layer (3) is 0.2-0.25 mm.

4. The flame-retardant tensile instrument signal cable according to claim 1, wherein the shielding layer (4) is a lead sheath shielding layer, and the thickness of the shielding layer (4) is 1mm.

5. The flame-retardant tensile instrument signal cable according to claim 1, wherein the supporting layer (5) is a steel wire mesh layer, and the cross section of the steel wire is triangular.

6. A fire-retardant tension-type instrument signal cable according to claim 1, wherein the filling layer (6) is a fire-retardant viscose fiber layer, and the thickness of the filling layer (6) is larger than that of the support layer (5).

7. A flame retardant tensile type instrument signal cable according to claim 1, wherein the flame retardant layer (7) is a PBI fiber layer.

8. The flame-retardant tensile instrument signal cable according to claim 1, wherein the outer protective layer (8) is a polyvinyl chloride layer, and the thickness of the outer protective layer (8) is 1-1.2mm.