Thermosetting insulating flame-retardant control cable with low smoke and low corrosive gas emission
By adopting low-voltage halogen-free flame-retardant sheath and multi-layer insulating structure in the control cable, the problem of smoke and corrosive gases generated by the control cable in fire is solved, and the effect of reducing smoke and gas emissions is achieved, improving personnel safety and equipment protection is achieved.
Patent Information
- Application Number
- CN202411951527.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-03-28
AI Technical Summary
Existing control cables can generate a large amount of smoke and corrosive gases in the event of fire, threatening personnel safety and equipment.
A thermoset insulated flame retardant control cable with a low-voltage halogen-free flame retardant sheath is made of twisted multiple core wires, each core wire includes a multi-stranded soft copper wire conductor, mica belt layer and thermoset insulation layer.
In the event of fire, it can reduce the emission of smoke and corrosive gases, protect personnel safety and reduce equipment damage.
Smart Images
Figure CN119724720A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of control cables, and in particular to a thermosetting insulated flame-retardant control cable with low smoke and low corrosive gas emission. Background Art
[0002] Control cables are mainly used to transmit control signals and low-power signals, and are widely used in industrial control systems, automation equipment, instrumentation, and building automation. They usually have a smaller wire diameter and a multi-core structure to facilitate flexible wiring and connection of multiple control points. Control cables are characterized by short transmission distances, but fast signal transmission speeds and short response times, and are key components for achieving precise control.
[0003] However, existing control cables often generate a lot of smoke and corrosive gases in the event of a fire, posing a threat to personnel safety and equipment.
[0004] Therefore, the applicant has found a solution to the above-mentioned problem through beneficial exploration and research, and the technical solution to be introduced below is produced in this context. Summary of the invention
[0005] The technical problem to be solved by the present invention is: to provide a thermosetting insulated flame retardant control cable with low smoke and low corrosive gas emission in view of the deficiencies of the prior art, which can reduce the emission of low smoke and low corrosive gas in the event of a fire to improve personnel safety and reduce equipment damage.
[0006] The technical problem to be solved by the present invention can be achieved by adopting the following technical solutions:
[0007] A low-smoke, low-corrosive gas emission thermosetting insulated flame-retardant control cable, comprising a cable line and a low-voltage halogen-free flame-retardant sheath extruded on the outer peripheral surface of the cable line, the cable line is formed by twisting a plurality of core wires, each core wire comprises a plurality of stranded soft copper wire conductors, a mica tape layer wrapped on the outer peripheral surface of the plurality of stranded soft copper wire conductors, and a thermosetting insulation layer extruded on the outer peripheral surface of the mica tape layer.
[0008] In a preferred embodiment of the present invention, among the plurality of twisted core wires, one of the core wires is a ground core wire.
[0009] In a preferred embodiment of the present invention, the mica tape layer is made of mica mineral.
[0010] In a preferred embodiment of the present invention, the thermosetting insulation layer is a cross-linked polyethylene insulation layer.
[0011] In a preferred embodiment of the present invention, the low-pressure halogen-free flame-retardant sheath is made of thermoplastic polyurethane or thermoplastic polyolefin.
[0012] Due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows: each core wire of the present invention is coated with a multi-strand twisted soft copper wire conductor by a mica tape layer and a thermosetting insulation layer, the thermosetting insulation layer is made of a low-smoke halogen-free material, and the low-voltage halogen-free flame-retardant sheath has excellent chemical corrosion resistance. The control cable of the present invention can reduce the emission of smoke and corrosive gases in the event of a fire, protect personnel safety and reduce equipment damage. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0014] Figure 1 It is a schematic cross-sectional view of the present invention. DETAILED DESCRIPTION
[0015] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific diagrams.
[0016] See also Figure 1 , the figure shows a low-smoke and low-corrosive gas emission thermosetting insulated flame-retardant control cable, comprising a cable 100 and a low-voltage halogen-free flame-retardant sheath 200 extruded on the outer peripheral surface of the cable 100. In this embodiment, the low-voltage halogen-free flame-retardant sheath 200 is preferably made of thermoplastic polyurethane (TPU) or thermoplastic polyolefin (TPO).
[0017] The cable 100 is formed by twisting a plurality of core wires 110. Among the twisted core wires, one core wire 110a is a ground core wire. Each core wire 110 includes a plurality of stranded soft copper wire conductors 111, a mica tape layer 112, and a thermosetting insulation layer 113. The mica tape layer 112 is wrapped around the outer circumference of the plurality of stranded soft copper wire conductors 111, and the thermosetting insulation layer 113 is extruded on the outer circumference of the mica tape layer 112. In this embodiment, the mica tape layer 112 is preferably made of mica mineral, and the thermosetting insulation layer 113 is a cross-linked polyethylene (XLPE) insulation layer.
[0018] The control cable of the present invention can reduce the emission of smoke and corrosive gas in the event of fire, thereby protecting personnel safety and reducing equipment damage.
[0019] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.
Claims
1. A thermosetting insulated flame retardant control cable with low smoke and low corrosive gas emission, characterized in that: The invention comprises a cable and a low-voltage halogen-free flame-retardant sheath extruded on the outer peripheral surface of the cable. The cable is formed by twisting a plurality of core wires. Each core wire comprises a plurality of strands of twisted soft copper wire conductors, a mica tape layer wrapped on the outer peripheral surface of the plurality of strands of twisted soft copper wire conductors, and a thermosetting insulation layer extruded on the outer peripheral surface of the mica tape layer.
2. The low smoke and low corrosive gas emission thermosetting insulated flame retardant control cable according to claim 1, characterized in that: Among the multiple twisted core wires, one of the core wires is a grounding core wire.
3. The thermosetting insulated flame-retardant control cable with low smoke and low corrosive gas emission as claimed in claim 1, characterized in that: The mica tape layer is made of mica mineral.
4. The low smoke and low corrosive gas emission thermosetting insulated flame retardant control cable according to claim 1, characterized in that: The thermosetting insulating layer is a cross-linked polyethylene insulating layer.
5. The low smoke and low corrosive gas emission thermosetting insulated flame retardant control cable according to claim 1, characterized in that: The low-voltage halogen-free flame-retardant sheath is made of thermoplastic polyurethane or thermoplastic polyolefin.