CN216671253U - Polyvinyl chloride insulation and flame-retardant polyvinyl chloride sheath shielding control cable - Google Patents
Polyvinyl chloride insulation and flame-retardant polyvinyl chloride sheath shielding control cable Download PDFInfo
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- CN216671253U CN216671253U CN202123433633.6U CN202123433633U CN216671253U CN 216671253 U CN216671253 U CN 216671253U CN 202123433633 U CN202123433633 U CN 202123433633U CN 216671253 U CN216671253 U CN 216671253U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model discloses a polyvinyl chloride insulation and flame-retardant polyvinyl chloride sheath shielding control cable, which comprises a cable core and a pressure-resistant core arranged outside the cable core, wherein the cable core consists of seven insulation wire cores, each insulation wire core consists of a conductor and a polyvinyl chloride insulation layer coated outside the conductor, the conductor adopts a plurality of strands of soft conductors, the pressure-resistant core is extruded outside the cable core, and a wrapping layer is wrapped outside the pressure-resistant core; the outer layer of the wrapping layer is provided with a shielding layer and an outer sheath which are coaxially and sequentially extruded; the compression-resistant core comprises an outer ring core and a polygonal inner ring core arranged on the inner wall of the outer ring core, and a supporting core is embedded at the connecting position of the outer ring core and the polygonal inner ring core. The utility model improves the problems of defects, easy damage and fracture of cables and the like in the aspect of control cable protection in the prior art, and has the advantages of torsion and compression resistance, prevention of aging of control cables, reduction of maintenance cost and the like.
Description
Technical Field
The utility model relates to the technical field of control cables, in particular to a polyvinyl chloride insulation and flame-retardant polyvinyl chloride sheath shielding control cable.
Background
The control cable is suitable for industrial and mining enterprises, energy traffic departments, occasions of controlling and protecting circuits with alternating current rated voltage below 450/750V, and the like. Common faults of control cable lines include mechanical damage, insulation moisture, insulation aging deterioration, overvoltage, cable overheating faults and the like. The selection of the metal shielding type of the control cable should include measures for comprehensively suppressing interference according to the strength of the possible electric interference influence so as to meet the requirements of reducing interference and overvoltage. When the control cable used in the weak current signal control loop is in an environment with interference influence and does not have effective anti-interference measures, the control cable with a metal shield is preferably selected to prevent the influence of electric interference, such as misoperation on a low-level signal loop or insulation breakdown, and the like.
The control cable is used for transmitting control signals, and mainly solves the problems of weak transmission signals, signal interference, signal distortion and the like. The cable of the prior art mainly comprises a core wire, an insulating layer, a shielding layer and a sheath, wherein the sheath wraps the outermost side of the cable, and the sheath is used for avoiding the influence of the external environment on signal transmission. Therefore, the sheath layer plays an important role in the cable, and the control cable in the prior art has a defect problem in the arrangement related to protection, so that the cable is damaged and broken, and signals are unstable or are interrupted when the signals are transmitted subsequently.
Aiming at the technical problems, the utility model discloses a polyvinyl chloride insulation and flame-retardant polyvinyl chloride sheath shielding control cable which has the advantages of torsion and compression resistance, prevention of aging of the control cable, reduction of maintenance cost and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides a polyvinyl chloride insulation and flame-retardant polyvinyl chloride sheath shielding control cable so as to solve the problems that the control cable in the prior art has defects in the arrangement of the related protection, the cable is damaged and broken, and signals are unstable or interrupted in the subsequent signal transmission process. The utility model has the advantages of torsion and compression resistance, prevention of aging of the control cable, reduction of maintenance cost and the like.
The utility model is realized by the following technical scheme: the utility model discloses a polyvinyl chloride insulation and flame-retardant polyvinyl chloride sheath shielding control cable, which comprises a cable core and a pressure-resistant core arranged outside the cable core, wherein the cable core consists of seven insulation wire cores, each insulation wire core consists of a conductor and a polyvinyl chloride insulation layer coated outside the conductor, the conductor adopts a plurality of strands of soft conductors, the pressure-resistant core is extruded outside the cable core, and a wrapping layer is wrapped outside the pressure-resistant core; the outer layer of the wrapping layer is provided with a shielding layer and an outer sheath which are coaxially and sequentially extruded; the compression-resistant core comprises an outer ring core and a polygonal inner ring core arranged on the inner wall of the outer ring core, and a resisting core is embedded in the connecting position of the outer ring core and the polygonal inner ring core; the outer sheath comprises an inner sheath layer and a fiber mesh wrapping layer, a fireproof layer and a flame-retardant polyvinyl chloride sheath layer which are coaxially and sequentially extruded outside the inner sheath layer.
Furthermore, in order to enable the cable to have an excellent impact resistance effect, a buffer cavity is formed between the outer ring core and the polygonal inner ring core, the inner wall of the polygonal inner ring core is attached to the adjacent surface of the insulated wire core of the cable core, and a through hole is formed in the inner wall of the polygonal inner ring core in a penetrating mode.
Furthermore, in order to ensure that the cable has outstanding mechanical strength and excellent weather resistance, the outer ring core and the polygonal inner ring core are both made of polyester elastomer materials.
Furthermore, in order to enhance the coordination among the components and disperse and reduce pressure when encountering external force impact, the anchorage core consists of an arc-shaped anti-torsion core and an angle core fixed at the center of an arc surface in the arc-shaped anti-torsion core, and is made of steel bars.
Furthermore, in order to enable the cable to have good shielding performance and electromagnetic interference prevention performance, the wrapping layer is a polyester tape, and the shielding layer is made of copper wires in a weaving mode.
Furthermore, in order to protect the cable inner core comprehensively, the inner sleeve layer is made of silicon rubber materials.
Furthermore, in order to enhance the fire resistance and high temperature resistance of the cable, the fireproof layer adopts mica tapes.
The utility model has the following advantages:
(1) according to the cable core, the inner conductor of the insulated wire of the cable core is extruded by the polyvinyl chloride insulating layer, the outermost layer of the outer sheath is made of flame-retardant polyvinyl chloride, the polyvinyl chloride is used as the outer layer protection of the conductor, so that the conductor is well protected, and the cable core has excellent dielectric property and mechanical property; the inner sleeve layer of the outer sheath is made of silicon rubber materials, the silicon rubber has remarkable high-temperature stability, even in a high-temperature environment above the temperature, the silicon rubber can still keep certain flexibility, rebound resilience and surface hardness, the mechanical property is not obviously changed, the internal cable core can be comprehensively protected, the fiber mesh wrapping layer is arranged between the fireproof layer and the inner sleeve layer, and the fiber mesh wrapping layer is embedded into the outer wall of the inner sleeve layer due to extrusion and compression, so that the whole cable has tear-resistant and fracture-resistant performance, the fireproof layer is wrapped by mica tapes, and the fireproof and flame-retardant performance of the cable is enhanced;
(2) the compression-resistant core is arranged outside the cable core and consists of an outer ring core and a polygonal inner ring core, a pressure-resistant and impact-resistant buffer cavity is formed between the outer ring core and the polygonal inner ring core, the inner wall of the polygonal inner ring core is attached to the adjacent surface of the insulated wire core of the cable core, a through hole is formed in the inner wall of the polygonal inner ring core in a penetrating manner, the cable core can have heat dissipation performance through the through hole, and the branch resistance core made of PA material is embedded in the connecting position of the outer ring core and the polygonal inner ring core and can be matched with the outer ring core and the polygonal inner ring core, so that the compression-resistant core has excellent torsion-resistant and compression-resistant effects, and the cost required by maintenance is reduced.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic view of the compression resistant core structure of the present invention;
fig. 3 is a schematic structural view of the outer sheath of the present invention.
In the figure: 1. a cable core; 2. a polyvinyl chloride insulating layer; 3. a conductor; 4. a compression resistant core; 401. an outer ring core; 402. a polygonal inner ring core; 403. a buffer chamber; 404. a through hole; 405. an anchorage core; 5. wrapping a covering; 6. a shielding layer; 7. an outer sheath; 701. an inner jacket layer; 702. a web wrap layer; 703. a fire barrier layer; 704. a flame-retardant polyvinyl chloride sheath layer.
Detailed Description
In the description of the present invention, words similar to "front", "rear", "left", "right", etc. indicating directions or positional relationships are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present invention.
The utility model provides a technical scheme that: a polyvinyl chloride insulation and flame-retardant polyvinyl chloride sheath shielding control cable comprises a cable core 1 and a compression-resistant core 4 arranged outside the cable core 1, wherein the cable core 1 consists of seven insulation wire cores, each insulation wire core consists of a conductor 3 and a polyvinyl chloride insulation layer 2 coated outside the conductor 3, the conductor 3 adopts a plurality of strands of flexible conductors, the compression-resistant core 4 is extruded outside the cable core 1, and a wrapping layer 5 is wound outside the compression-resistant core 4; the outer layer of the wrapping layer 5 is provided with a shielding layer 6 and an outer sheath 7 which are coaxially and sequentially extruded; the compression-resistant core 4 comprises an outer ring core 401 and a polygonal inner ring core 402 arranged on the inner wall of the outer ring core 401, and a anchorage core 405 is embedded at the connecting position of the outer ring core 401 and the polygonal inner ring core 402; the outer sheath 7 comprises an inner sheath layer 701, a fiber mesh wrapping layer 702, a fire-proof layer 703 and a flame-retardant polyvinyl chloride sheath layer 704, wherein the outer side of the inner sheath layer 701 is coaxially and sequentially extruded.
As shown in fig. 2, a buffer cavity 403 is formed between the outer ring core 401 and the polygonal inner ring core 402, the inner wall of the polygonal inner ring core 402 and the adjacent surface of the insulated wire core of the cable core 1 are attached to each other, and a through hole 404 is further formed in the inner wall of the polygonal inner ring core 402, so that the cable has an excellent impact resistance effect through the combined structure of the outer ring core 401 and the polygonal inner ring core 402.
As shown in fig. 2, the outer ring core 401 and the polygonal inner ring core 402 are both made of a polyester elastomer material, and the outer ring core 401 and the polygonal inner ring core 402 made of the polyester elastomer material have excellent bending fatigue resistance, impact resistance, weather resistance and tear resistance, have excellent points and bearing capacity, and have comprehensive properties such as outstanding mechanical strength, excellent resilience, wide use temperature and the like.
As shown in fig. 2, the anchorage core 405 is composed of an arc-shaped anti-torsion core and an angle core fixed at the center of the inner arc surface of the arc-shaped anti-torsion core, and the anchorage core 405 is made of steel bars, so that the use of the outer ring core 401 and the polygonal inner ring core 402 can be assisted, the coordination among components is enhanced, and the pressure can be dispersed and reduced when being impacted by external force.
As shown in fig. 1, the wrapping layer 5 is a polyester tape, the shielding layer 6 is made of copper wires in a weaving mode, the polyester tape is designed around the wrapping layer 5, the mechanical strength and the insulating property of the cable are improved, the high-temperature resistance and the low-temperature resistance of the cable can protect the cable internally, the shielding layer 6 made of the copper wires in a weaving mode can prevent electromagnetic interference, and the inside of the shielding layer can be bound and induced electricity can be eliminated.
As shown in fig. 3, the inner jacket layer 701 is made of a silicone rubber material, the silicone rubber has significant high-temperature stability, even in a high-temperature environment of more than 200 ℃, the silicone rubber can still maintain certain flexibility, resilience and surface hardness, and the mechanical properties of the silicone rubber are not changed obviously, so that the inner cable core 1 can be protected comprehensively.
As shown in fig. 3, the fire-retardant layer 703 is made of mica tape, which enhances the fire-retardant property of the control cable.
The principle of the utility model is as follows: the anti-compression core 4 is arranged outside the cable core 1, the anti-compression core 4 is composed of an outer ring core 401 and a polygonal inner ring core 402, a pressure-resistant and impact-resistant buffer cavity 403 is formed between the outer ring core 401 and the polygonal inner ring core 402, the inner wall of the polygonal inner ring core 402 is attached to the adjacent surface of the insulated wire core of the cable core 1, a through hole 404 is further formed in the inner wall of the polygonal inner ring core 402 in a penetrating mode, the cable core 1 can have heat dissipation performance due to the through hole 404, a supporting and anti-compression core 405 made of PA66 material is embedded in the connecting position of the outer ring core 401 and the polygonal inner ring core 402 and can be matched with the outer ring core 401 and the polygonal inner ring core 402, the anti-compression core 4 has an excellent anti-compression effect, and the cost required by maintenance is reduced; an inner conductor 3 of an insulated wire of the cable core 1 is extruded by a polyvinyl chloride insulating layer 2, flame-retardant polyvinyl chloride 704 is used as the outermost layer of the outer sheath 7, and polyvinyl chloride is used as the outer layer protection of the conductor 3, so that the conductor is well protected, and the cable has excellent dielectric property and mechanical property; the inner sleeve 701 of the outer sheath 7 is made of silicon rubber material, the silicon rubber has remarkable high-temperature stability, even in a high-temperature environment above 200 ℃, the silicon rubber can still keep certain flexibility, rebound resilience and surface hardness, the mechanical property is not changed obviously, the inner cable core 1 can be protected comprehensively, the fiber mesh wrapping layer 702 is arranged between the fireproof layer 703 and the inner sleeve 701, the fiber mesh wrapping layer 702 is embedded into the outer wall of the inner sleeve 701 due to extrusion and compression, the cable can integrally have tear-resistant and fracture-resistant performance, the fireproof layer 703 is wrapped by mica tapes, and the fireproof and flame-retardant performance of the cable is enhanced.
Claims (7)
1. The polyvinyl chloride insulation and flame-retardant polyvinyl chloride sheath shielding control cable is characterized by comprising a cable core and a compression-resistant core arranged outside the cable core, wherein the cable core consists of seven insulation wire cores, each insulation wire core consists of a conductor and a polyvinyl chloride insulation layer coated outside the conductor, the conductor adopts a plurality of strands of flexible conductors, the compression-resistant core is extruded outside the cable core, and a wrapping layer is wrapped outside the compression-resistant core; the outer layer of the wrapping layer is provided with a shielding layer and an outer sheath which are coaxially and sequentially extruded; the compression-resistant core comprises an outer ring core and a polygonal inner ring core arranged on the inner wall of the outer ring core, and an anchorage core is embedded in the connecting position of the outer ring core and the polygonal inner ring core; the outer sheath comprises an inner sheath layer and a fiber mesh wrapping layer, a fireproof layer and a flame-retardant polyvinyl chloride sheath layer which are coaxially and sequentially extruded outside the inner sheath layer.
2. The polyvinyl chloride insulation and flame-retardant polyvinyl chloride sheath shielding control cable of claim 1, wherein a buffer cavity is formed between the outer ring core and the polygonal inner ring core, the inner wall of the polygonal inner ring core is attached to the adjacent surface of the insulated wire core of the cable core, and a through hole is formed in the inner wall of the polygonal inner ring core.
3. The polyvinyl chloride insulated and flame retardant polyvinyl chloride sheathed shielding control cable according to claim 1, wherein the outer ring core and the polygonal inner ring core are made of polyester elastomer material.
4. The polyvinyl chloride insulated and flame retardant polyvinyl chloride jacketed shielded control cable according to claim 1, wherein the anchorage core is composed of an arc-shaped torsion-resistant core and an angle core fixed at the center of the arc-shaped torsion-resistant core, and the anchorage core is made of steel bars.
5. The polyvinyl chloride insulated and flame-retardant polyvinyl chloride sheathed shielding control cable according to claim 1, wherein the wrapping layer is a polyester tape, and the shielding layer is made of copper wires by weaving.
6. The polyvinyl chloride insulated and flame retardant polyvinyl chloride sheathed shielding control cable according to claim 1, wherein the inner sheath layer is made of silicon rubber material.
7. The polyvinyl chloride insulated and flame retardant polyvinyl chloride jacketed shielded control cable of claim 1, wherein said fire resistant layer is mica tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123433633.6U CN216671253U (en) | 2021-12-31 | 2021-12-31 | Polyvinyl chloride insulation and flame-retardant polyvinyl chloride sheath shielding control cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123433633.6U CN216671253U (en) | 2021-12-31 | 2021-12-31 | Polyvinyl chloride insulation and flame-retardant polyvinyl chloride sheath shielding control cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216671253U true CN216671253U (en) | 2022-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123433633.6U Active CN216671253U (en) | 2021-12-31 | 2021-12-31 | Polyvinyl chloride insulation and flame-retardant polyvinyl chloride sheath shielding control cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216671253U (en) |
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2021
- 2021-12-31 CN CN202123433633.6U patent/CN216671253U/en active Active
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