CN209880210U - Compression-resistant fire-resistant control cable - Google Patents
Compression-resistant fire-resistant control cable Download PDFInfo
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- CN209880210U CN209880210U CN201920757480.4U CN201920757480U CN209880210U CN 209880210 U CN209880210 U CN 209880210U CN 201920757480 U CN201920757480 U CN 201920757480U CN 209880210 U CN209880210 U CN 209880210U
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- control cable
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Abstract
The utility model discloses a resistance to compression fire-resistant control cable, including insulation core, filling layer, water blocking layer, shielding layer, inner sheath layer, resistance to compression protective layer and the oversheath layer that from interior to exterior set gradually, the resistance to compression protective layer is welding steel pipe layer, inner sheath layer and oversheath layer adopt copolyether ester elastomer to make. The steel belt is adopted in the control cable to form the welded steel pipe layer through the straight seam welding technology, compared with an armor layer formed by steel wire wrapping or steel belt wrapping adopted in the traditional cable, the defect of material overlapping in the wrapping technology can be avoided, the weight of the cable is reduced, the thickness of the compression-resistant protective layer is reduced, and meanwhile, the extrusion deformation of external pressure to the internal structure of the cable is avoided; the control cable adopts the sheath layer made of copolyether ester elastomer with flame retardant property, has more excellent flame retardant and fireproof properties compared with the sheath layer made of polyvinyl chloride in the traditional cable, and can avoid the situation that the surface layer of the traditional cable is easily subjected to high temperature or flame to cause spontaneous combustion.
Description
Technical Field
The utility model relates to a control cable technical field, concretely relates to is a resistance to compression fire-resistant control cable.
Background
With the rapid development of national economy, electrical control equipment and control cables thereof are widely applied to various fields and places, in particular to control cable products with higher and more performances required in petroleum, chemical engineering, power generation, metallurgy, tunnels, hotels and entertainment places. The existing control cable is made of a conventional polyvinyl chloride insulating sheath material, has no characteristics of corrosion resistance, water resistance, oil resistance, pressure resistance and the like, and is easily extruded and deformed by external pressure during use. In addition, the polyvinyl chloride sheath layer has poor stability to light and heat, is automatically catalyzed and decomposed after being exposed to sunlight for a long time, and has rapidly reduced physical and mechanical properties, and under the condition that the cable is short-circuited to cause high temperature or sudden fire, the insulating sheath layer of the control cable is easily burnt and damaged, so that conductors in the cable are exposed or burnt, and the control cable interrupts the transmission of electric power.
SUMMERY OF THE UTILITY MODEL
In order to overcome above-mentioned present control cable receives the technical defect that external force extrusion deformation and insulating restrictive coating burn out easily, the utility model provides a resistance to compression fire-resistant control cable has higher compressive capacity and outstanding fire-resistant flame retardant ability.
In order to solve the above problem, the utility model discloses realize according to following technical scheme:
a resistance to compression fire-resistant control cable, including insulation core, filling layer, water blocking layer, shielding layer, inner sheath layer, resistance to compression protective layer and the oversheath layer that from interior to exterior set gradually, the resistance to compression protective layer is the welding steel pipe layer, inner sheath layer and oversheath layer adopt copolyether ester elastomer to make.
Furthermore, the filling layer is filled between the insulating wire core and the water-blocking layer by adopting water-blocking yarns.
Furthermore, the water-blocking layer is formed by wrapping a water-blocking tape.
Furthermore, the shielding layer is formed by wrapping a double-sided aluminum-plastic composite tape.
Furthermore, the insulating wire core is sequentially wrapped with a wire core conductor, a fire-resistant layer and an insulating layer from inside to outside.
Furthermore, the core conductor is formed by twisting tinned soft copper wires.
Furthermore, the fire-resistant layer is formed by wrapping calcined mica tapes.
Further, the insulating layer is a TPEE layer.
Compared with the prior art, the beneficial effects of the utility model are that:
1. this control cable is inside to be provided with the resistance to compression protective layer, the resistance to compression protective layer is for adopting the steel band to form the welded steel pipe layer through the transversal joint welding technique, compares in traditional cable and adopts the steel wire to wind the package or the armor that the steel band formed around the package, can avoid wrapping up the defect that the technique exists with the material overlapping around the package, when lightening the weight of cable and reducing the thickness of resistance to compression protective layer, can wrap up other structural layers of cable inside completely, avoids external pressure to cable inner structure's extrusion deformation.
2. The control cable adopts the sheath layer made of copolyether ester elastomer with flame retardant property, has more excellent flame retardant and fireproof properties compared with the sheath layer made of polyvinyl chloride in the traditional cable, and can avoid the situation that the surface layer of the traditional cable is easily subjected to high temperature or flame to cause spontaneous combustion.
Drawings
The following detailed description of embodiments of the invention is provided with reference to the accompanying drawings, in which:
fig. 1 is a pressure-resistant fire-resistant control cable of the present invention;
in the figure: 11-core conductor; 12-a refractory layer; 13-an insulating layer; 2-a filling layer; 3-a water-resistant layer; 4-a shielding layer; 5-inner jacket layer; 6-compression-resistant protective layer; 7-outer sheath layer.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
As shown in FIG. 1, a resistance to compression fire-resistant control cable, include insulating core, filling layer 2, water blocking layer 3, shielding layer 4, inner sheath layer 5, resistance to compression protective layer 6 and oversheath layer 7 that from interior to exterior set gradually.
Specifically, resistance to compression protective layer 6 is for adopting the steel band to form the welded steel pipe layer through the transversal joint welding technique, wraps up in the outer wall of inner sheath layer 5 closely knit, and the welded steel pipe has great impact toughness and hardness, can keep the cable to receive external force extrusion back shape unchangeable, compares in traditional cable and adopts the steel band to wrap around package or steel wire to wrap around the package, and it overcomes to have the defect of overlapping with the material around the package technique, can alleviate the weight of cable and reduce resistance to compression protective layer 6's thickness, and provides very strong compressive capacity for control cable.
The inner sheath layer 5 and the outer sheath layer 7 are made of copolyether ester elastomers, specifically, the copolyether ester elastomers are copolymers formed by adding graphite processed by concentrated sulfuric acid, ammonium polyphosphate fire retardant, plasticizer, lubricant and antioxidant into a thermoplastic polyester elastomer (TPEE) reaction kettle, the TPEE has rubber elasticity and engineering plastic strength, the control cable can be kept in a round bar shape, and meanwhile, the TPEE has strong corrosion resistance and wear resistance, so that the surface layer of the cable is not easy to wear. The TPEE is added with graphite and ammonium polyphosphate with high heat resistance and flame retardant property and mixed with auxiliary materials such as plasticizer, lubricant and antioxidant, so that the TPEE is perfectly bonded with the graphite and the ammonium polyphosphate, the heat resistance and the flame retardant property of the inner sheath layer 5 and the outer sheath layer 7 are enhanced, and the surface layer of the control cable is protected from being burnt by spontaneous combustion in a high-temperature environment.
Further, filling layer 2 is for adopting the yarn that blocks water to closely knit the packing between insulated wire core and water blocking layer 3, can avoid the displacement between the insulated wire core, makes in the firm waterproof layer of insulated wire core. The waterproof layer 3 is formed by wrapping a waterproof tape, the waterproof yarns and the water-assembling tape can expand rapidly after meeting water, the filling layer 2 can prevent water from flowing into the cable longitudinally, the waterproof layer can prevent water from flowing into the cable radially, longitudinal and transverse bidirectional water blocking of the control cable is achieved, and the service life of the control cable in a humid environment can be prolonged.
The shielding layer 4 is formed by wrapping a double-sided aluminum-plastic composite tape, two surfaces of the double-sided aluminum-plastic composite tape are coated with metal aluminum, an insulating wire core in the control cable is separated from electromagnetic waves outside the shielding layer 4, a shielding effect is generated, and the insulating wire core is protected from being interfered by external electromagnetic waves.
Furthermore, the insulated wire core is sequentially wrapped with a wire core conductor 11, a fire-resistant layer 12 and an insulating layer 13 from inside to outside. The core conductor 11 is formed by twisting tinned soft copper wires and has excellent conductive transmission capacity. The fire-resistant layer 12 is formed by wrapping calcined mica tapes, the calcined mica tapes can be preferably Firwo-CMG type calcined mica tapes, through the calcination treatment of the high-temperature-resistant muscovite, crystal water and impurities which damage voltage resistance and temperature resistance are removed, and the fire-resistant stability is greatly enhanced. The content of organic silicon resin in the calcined mica tape is higher than that of the conventional tape by more than 50 percent, mica and the highly crosslinked silica polymer are sintered into a compact ceramic-like protective shell at high temperature, and the conductor 11 of the wire core is protected from being burnt in big fire. The insulating layer 13 is a TPEE layer, which has strong electrical insulation and wear resistance, and can protect the refractory layer 12 from being worn.
Other constructions of a pressure resistant fire resistant control cable as described in this embodiment are known in the art.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments do not depart from the technical solution of the present invention, and still fall within the scope of the technical solution of the present invention.
Claims (8)
1. The utility model provides a fire-resistant control cable of resistance to compression, its characterized in that includes insulating core, filling layer (2), water blocking layer (3), shielding layer (4), inner sheath layer (5), resistance to compression protective layer (6) and oversheath layer (7) that from interior to exterior set gradually, resistance to compression protective layer (6) are the welding steel pipe layer, inner sheath layer (5) and oversheath layer (7) adopt the copolyether ester elastomer to make.
2. The pressure-resistant and fire-resistant control cable according to claim 1, wherein the filling layer (2) is filled between the insulated wire core and the water-resistant layer (3) with water-resistant yarn.
3. The pressure-resistant fire-resistant control cable according to claim 1, wherein the water-resistant layer (3) is wrapped by a water-resistant tape.
4. The pressure-resistant fire-resistant control cable according to claim 1, wherein the shielding layer (4) is wrapped by a double-sided aluminum-plastic composite tape.
5. The pressure-resistant and fire-resistant control cable according to claim 1, wherein the insulated wire core is wrapped with a wire core conductor (11), a fire-resistant layer (12) and an insulating layer (13) in sequence from inside to outside.
6. The pressure-resistant and fire-resistant control cable according to claim 5, wherein the core conductor (11) is stranded with tin-plated soft copper wires.
7. The compression-resistant fire-resistant control cable according to claim 6, wherein the fire-resistant layer (12) is wrapped with calcined mica tape.
8. The pressure resistant fire resistant control cable of claim 7 wherein the insulation layer (13) is a TPEE layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920757480.4U CN209880210U (en) | 2019-05-23 | 2019-05-23 | Compression-resistant fire-resistant control cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920757480.4U CN209880210U (en) | 2019-05-23 | 2019-05-23 | Compression-resistant fire-resistant control cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209880210U true CN209880210U (en) | 2019-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920757480.4U Active CN209880210U (en) | 2019-05-23 | 2019-05-23 | Compression-resistant fire-resistant control cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209880210U (en) |
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2019
- 2019-05-23 CN CN201920757480.4U patent/CN209880210U/en active Active
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