CN213123885U - Crosslinked polyethylene insulation halogen-free low-smoke flame-retardant instrument cable - Google Patents
Crosslinked polyethylene insulation halogen-free low-smoke flame-retardant instrument cable Download PDFInfo
- Publication number
- CN213123885U CN213123885U CN202022458024.5U CN202022458024U CN213123885U CN 213123885 U CN213123885 U CN 213123885U CN 202022458024 U CN202022458024 U CN 202022458024U CN 213123885 U CN213123885 U CN 213123885U
- Authority
- CN
- China
- Prior art keywords
- layer
- retardant
- cable
- cross
- torsion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model discloses a low cigarette flame retardant instrument cable of insulating nothing of crosslinked polyethylene belongs to cable technical field, including multiunit cable core and around the band layer, the outside of around the band layer is wrapped up in proper order and is taken total shielding layer, compressive layer, fire prevention fire-retardant layer and oversheath in the plastic-aluminum complex, is equipped with anti-torsion subassembly between compressive layer and the fire prevention fire-retardant layer, and anti-torsion subassembly includes a plurality of elasticity strips that reset, and the center department of each elasticity strip that resets all is equipped with the anti wire drawing of galvanized steel wire; the outer side of the outer sheath is provided with a plurality of groups of convex edge groups, each group of convex edge group comprises a plurality of anti-torsion convex edges, and the center of each anti-torsion convex edge is provided with a copper wire anti-drawing wire. The utility model discloses a plurality of elasticity strips that reset can improve the resilience and the antitorque commentaries on classics performance of this cable, make the cable receive the torsional force and take place to twist reverse the back and can resume rapidly, the outside of oversheath is equipped with the multiunit and follows circumferencial direction align to grid's bead group, can further improve the antitorque commentaries on classics performance and the compressive property of cable.
Description
Technical Field
The utility model relates to the technical field of cables, a crosslinked polyethylene insulation does not have steamed low fire-retardant instrument cable of cigarette specifically says.
Background
A cable is a conductor made of one or more conductors insulated from each other and an outer insulating sheath that carries power or information from one location to another. The cable is of various types, including power cables, control cables, high-temperature cables, computer cables, signal cables, aluminum alloy cables and the like. They are composed of single or multi-strand wires and insulating layers, and are used for connecting circuits, electric appliances and the like. In some applications, the cable is required to be frequently moved, bent and twisted, such as a cable for wind power generation, and therefore, the cable is required to have high flexibility and torsion resistance.
The conventional cable has defects in torsion resistance, and after the cable is frequently twisted and bent along with machine equipment, the cable is easily damaged and broken, so that a wire core and a conductor in the cable are exposed, electric shock and fire accidents are easily caused, and the service life of the cable is short; meanwhile, the cable also needs to bear pressure, bending, tension, cross tensile load and strong impact, and if the compression resistance of the cable is not enough, the normal use of the cable is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a low fire-retardant instrument cable of insulating nothing halogen of crosslinked polyethylene to solve the cable among the prior art resistant torsional properties poor and the weak technical problem of compressive property.
The technical scheme of the utility model is that: including multiunit cable core and parcel at the winding band layer in the multiunit cable core outside, every cable core of group is formed by two conductor pair twists, every the conductor has set gradually insulating layer, typewriter ribbon and aluminium-plastic composite tape branch shielding layer from inside to outside, wherein: the outer side of the wrapping tape layer is sequentially coated with an aluminum-plastic composite tape main shielding layer, a compression resistant layer, a fireproof flame-retardant layer and an outer sheath, an anti-torsion assembly is arranged between the compression resistant layer and the fireproof flame-retardant layer, the compression resistant layer is a tubular elastic body, polyurethane foam plastic is filled in a gap between the inner part of the wrapping tape layer and the outer side of a cable core, the anti-torsion assembly comprises a plurality of elastic resetting strips which are uniformly distributed on the circumference, the cross section of each elastic resetting strip is of an oval structure, and the outer side of the compression resistant layer and the inner side of the fireproof flame-retardant layer are respectively provided with a limiting groove for storing each elastic resetting strip;
the center of each elastic reset strip is provided with a galvanized steel wire anti-wiredrawing wire arranged along the length direction of the elastic reset strip;
the outer side of oversheath is equipped with the bead group of multiunit along circumferencial direction align to grid, and every group bead group all includes the antitorque commentaries on classics bead of a plurality of linear arrangement, every the cross section of antitorque commentaries on classics bead is "T" type structure, the antitorque commentaries on classics bead is made for the elastic material, every the center department of antitorque commentaries on classics bead all is equipped with the anti wire drawing of copper wire that sets up along its length direction.
Furthermore, one side of the anti-torsion convex rib close to the outer sheath is provided with a plurality of arc-shaped grooves which are arranged at equal intervals along the length direction of the anti-torsion convex rib.
Furthermore, the sub-shielding layer and the total shielding layer of the aluminum-plastic composite belt are respectively provided with a drainage wire, and the cross section of the drainage wire is not less than 0.2mm2。
Furthermore, the wrapping band layer is formed by wrapping non-hygroscopic wrapping bands.
Furthermore, the insulating layer is made of a cross-linked polyethylene insulating material.
Furthermore, the outer sheath is made of halogen-free low-smoke flame-retardant polyolefin material.
Furthermore, the fireproof flame-retardant layer is made of flame-retardant polyvinyl chloride resin.
The utility model discloses an improvement provides a low fire-retardant instrument cable of insulating nothing halogen of crosslinked polyethylene here, compares with prior art, has following improvement and advantage:
firstly, the utility model can improve the resilience and torsion resistance of the cable through a plurality of elastic resetting strips, so that the cable can be quickly restored after being twisted by the twisting force, and further the cable is prevented from being continuously twisted to damage the internal structure of the cable; the spacing groove is used for installing and spacing the elastic reset strip, and the elastic reset strip can enable the cable to recover rapidly under the restoring force of the elastic reset strip when the cable deforms.
Secondly, in order to further improve the torsion resistance and the compression resistance of the cable, a plurality of groups of rib groups which are uniformly arranged along the circumferential direction are arranged on the outer side of the outer sheath, each group of rib groups comprises a plurality of torsion-resistant ribs which are linearly arranged, the cross section of each torsion-resistant rib is of a T-shaped structure, each torsion-resistant rib is made of an elastic material, and a copper wire drawing-resistant wire arranged along the length direction of each torsion-resistant rib is arranged at the center of each torsion-resistant rib; and antitorque commentaries on classics bead is made for the elastic material, can make the cable receive external force and play certain cushioning effect, avoids the cable to receive to press and receive the damage, improves the compressive property of cable, and can make the cable receive torsional force and take place to resume rapidly after twisting, and the anti wire drawing of copper wire has the pull resistance, further improves the tensile property of cable.
Thirdly, when the elastic reset strip extrudes the anti-compression layer, the anti-compression layer can play a role of buffering for the tubular elastomer, so that the compression resistance of the cable is further improved.
Fourthly, a plurality of arc-shaped grooves which are arranged at equal intervals along the length direction of the anti-torsion convex ribs are arranged on one side of the anti-torsion convex ribs, which is close to the outer sheath; the arc-shaped groove is used for allowing rainwater to pass through, so that the rainwater is prevented from staying on the surface of the outer sheath for a long time, and the use safety of the cable is improved.
Drawings
The invention is further explained below with reference to the figures and examples:
fig. 1 is a schematic perspective view of the present invention;
FIG. 2 is a sectional view of the structure of the present invention;
fig. 3 is an enlarged view of a portion a in fig. 2.
Description of reference numerals:
1. a cable core; 11. a conductor; 12. an insulating layer; 13. the aluminum-plastic composite belt is provided with a shielding layer; 2. wrapping a belt layer; 3. the aluminum-plastic composite belt total shielding layer; 4. a pressure resistant layer; 5. a fire resistant and flame retardant layer; 6. an outer sheath; 61. a rib group; 62. an anti-torsion rib; 63. drawing resistance of the copper wire; 64. an arc-shaped slot; 7. a torsion resistant assembly; 71. an elastic reset bar; 72. a limiting groove; 73. the galvanized steel wire resists wire drawing; 8. and (4) a drainage wire.
Detailed Description
The present invention will be described in detail with reference to fig. 1 to 3, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model discloses an improve and provide a low fire-retardant instrument cable of insulating nothing halogen of crosslinked polyethylene here, as shown in fig. 1-fig. 3, including multiunit cable core 1 and parcel in the winding band layer 2 in the 1 outside of multiunit cable core, every group cable core 1 is formed by 11 pairs of twists of two conductors, every conductor 11 has set gradually insulating layer 12, typewriter ribbon and compound area branch shielding layer 13 of aluminium-plastic from inside to outside, wherein: the outer side of the wrapping band layer 2 is sequentially wrapped with an aluminum-plastic composite band main shielding layer 3, a compression resistant layer 4, a fireproof flame-retardant layer 5 and an outer sheath 6, an anti-torsion assembly 7 is arranged between the compression resistant layer 4 and the fireproof flame-retardant layer 5, the compression resistant layer 4 is a tubular elastic body, polyurethane foam plastic is filled in a gap between the inner side of the wrapping band layer 2 and the outer side of the cable core 1, the anti-torsion assembly 7 comprises a plurality of elastic reset strips 71 which are uniformly distributed in the circumferential direction, the cross section of each elastic reset strip 71 is of an oval structure, and the outer side of the compression resistant layer 4 and the inner side of the fireproof flame-retardant layer 5 are respectively provided with a limiting groove 72 for storing each elastic reset strip 71; can improve the resilience and the antitorque commentaries on classics performance of this cable through a plurality of elasticity strips 71 that resets, make the cable receive the torsional force and take place to twist reverse the back and can resume rapidly, and then avoid the cable to continuously keep twisting reverse the structure inside the cable and cause the damage, polyurethane foam plays the effect of filling, it is light to have a quality, thermal-insulated and fire-retardant effect, spacing groove 72 is used for installing and spacing elasticity strips 71 that resets, elasticity strips 71 that resets can make the cable resume rapidly under the restoring force of self when the cable takes place to deform, when elasticity strips 71 extrudees to the compressive layer 4, compressive layer 4 can play the effect of buffering for pipy elastomer, come the compressive property of further improvement cable.
In order to further improve the tensile property of the cable, a galvanized steel wire anti-drawing wire 73 arranged along the length direction of each elastic reset strip 71 is arranged at the center of each elastic reset strip; so as to improve the tensile property of the cable as a whole.
In order to further improve the torsion resistance and the pressure resistance of the cable, a plurality of groups of rib groups 61 uniformly arranged along the circumferential direction are arranged on the outer side of the outer sheath 6, each group of rib groups 61 comprises a plurality of torsion-resistant ribs 62 linearly arranged, the cross section of each torsion-resistant rib 62 is of a T-shaped structure, the torsion-resistant ribs 62 are made of elastic materials, and a copper wire anti-drawing wire 63 arranged along the length direction of each torsion-resistant rib 62 is arranged at the center of each torsion-resistant rib 62; and antitorque commentaries on classics bead 62 is made for the elastic material, can make the cable receive external force and play certain cushioning effect, avoids the cable to receive to press and receive the damage, improves the compressive property of cable, and can make the cable receive torsional force and take place to resume rapidly after twisting, and the anti wire drawing 63 of copper wire has the pull resistance, further improves the tensile property of cable.
Specifically, one side of the anti-torsion convex rib 62 close to the outer sheath 6 is provided with a plurality of arc-shaped grooves 64 which are arranged at equal intervals along the length direction; the arc-shaped groove 64 is used for rainwater to pass through, so that rainwater is prevented from staying on the surface of the outer sheath 6 for a long time, and the use safety of the cable is improved.
Specifically, the sub-shielding layer 13 of the aluminum-plastic composite belt and the main shielding layer 3 of the aluminum-plastic composite belt are both provided with a drainage wire 8, and the cross section of the drainage wire 8 is not less than 0.2mm2。
Specifically, the wrapping band layer 2 is formed by wrapping a non-hygroscopic wrapping band; the winding band layer 2 is used for tightly winding and binding the outer surfaces of the multiple groups of cable cores 1.
Specifically, the insulating layer 12 is made of a cross-linked polyethylene insulating material; to provide insulation for the conductor 11.
Specifically, the outer sheath 6 is made of a halogen-free low-smoke flame-retardant polyolefin material; the outer sheath 6 made of halogen-free low-smoke flame-retardant polyolefin material has excellent flame-retardant performance, less smoke during combustion and no overflow of corrosive gas.
In order to further improve the flame retardant effect of the cable, specifically, the fireproof flame retardant layer 5 is made of a flame retardant polyvinyl chloride resin material; the fireproof flame-retardant layer 5 made of the flame-retardant polyvinyl chloride resin material can play a certain flame-retardant effect.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The utility model provides a low fire-retardant instrument cable of insulating nothing of crosslinked polyethylene, includes multiunit cable core (1) and parcel in the winding band layer (2) in multiunit cable core (1) outside, every group cable core (1) is formed by two conductor (11) pair twist, every conductor (11) have set gradually insulating layer (12), typewriter ribbon and aluminum-plastic composite tape branch shielding layer (13), its characterized in that from inside to outside: the outer side of the winding band layer (2) is sequentially coated with an aluminum-plastic composite band total shielding layer (3), a compression resistant layer (4), a fireproof flame-retardant layer (5) and an outer sheath (6), an anti-torsion assembly (7) is arranged between the compression resistant layer (4) and the fireproof flame-retardant layer (5), the compression resistant layer (4) is a tubular elastomer, polyurethane foam plastic is filled in a gap between the inner part of the winding band layer (2) and the outer side of the cable core (1), the anti-torsion assembly (7) comprises a plurality of elastic reset strips (71) which are uniformly distributed in the circumferential direction, the cross section of each elastic reset strip (71) is of an oval structure, and the outer side of the compression resistant layer (4) and the inner side of the fireproof flame-retardant layer (5) are respectively provided with a limiting groove (72) for storing each elastic reset strip (71);
the center of each elastic reset strip (71) is provided with a galvanized steel wire anti-drawing wire (73) arranged along the length direction of the elastic reset strip;
the outside of oversheath (6) is equipped with the bead group (61) that the multiunit was evenly arranged along the circumferencial direction, and every group bead group (61) all includes the antitorque commentaries on classics bead (62) of a plurality of linear arrangement, every the cross section of antitorque commentaries on classics bead (62) is "T" type structure, antitorque commentaries on classics bead (62) are made for the elastic material, every the center department of antitorque commentaries on classics bead (62) all is equipped with along the anti wire drawing (63) of copper wire that its length direction set up.
2. The cross-linked polyethylene insulated halogen-free low-smoke flame-retardant instrument cable according to claim 1, characterized in that: one side of the anti-torsion convex rib (62) close to the outer sheath (6) is provided with a plurality of arc-shaped grooves (64) which are arranged at equal intervals along the length direction of the anti-torsion convex rib.
3. The cross-linked polyethylene insulated halogen-free low-smoke flame-retardant instrument cable according to claim 2, characterized in that: the aluminum-plastic composite belt sub-shielding layer (13) and the aluminum-plastic composite belt main shielding layer (3) are both provided with drainage wires (8), and the cross section of each drainage wire (8) is not less than 0.2mm2。
4. The cross-linked polyethylene insulated halogen-free low-smoke flame-retardant instrument cable according to claim 1, characterized in that: the wrapping band layer (2) is formed by wrapping non-hygroscopic wrapping bands.
5. The cross-linked polyethylene insulated halogen-free low-smoke flame-retardant instrument cable according to claim 1, characterized in that: the insulating layer (12) is made of a cross-linked polyethylene insulating material.
6. The cross-linked polyethylene insulated halogen-free low-smoke flame-retardant instrument cable according to claim 1, characterized in that: the outer sheath (6) is made of halogen-free low-smoke flame-retardant polyolefin material.
7. The cross-linked polyethylene insulated halogen-free low-smoke flame-retardant instrument cable according to claim 1, characterized in that: the fireproof flame-retardant layer (5) is made of flame-retardant polyvinyl chloride resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022458024.5U CN213123885U (en) | 2020-10-28 | 2020-10-28 | Crosslinked polyethylene insulation halogen-free low-smoke flame-retardant instrument cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022458024.5U CN213123885U (en) | 2020-10-28 | 2020-10-28 | Crosslinked polyethylene insulation halogen-free low-smoke flame-retardant instrument cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213123885U true CN213123885U (en) | 2021-05-04 |
Family
ID=75667319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022458024.5U Active CN213123885U (en) | 2020-10-28 | 2020-10-28 | Crosslinked polyethylene insulation halogen-free low-smoke flame-retardant instrument cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213123885U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113963847A (en) * | 2021-09-08 | 2022-01-21 | 国网山东省电力公司武城县供电公司 | Aluminum alloy composite cable with strength releasing and torsion resisting functions |
-
2020
- 2020-10-28 CN CN202022458024.5U patent/CN213123885U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113963847A (en) * | 2021-09-08 | 2022-01-21 | 国网山东省电力公司武城县供电公司 | Aluminum alloy composite cable with strength releasing and torsion resisting functions |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8088997B2 (en) | Metal sheathed cable assembly | |
| JP3725823B2 (en) | High performance data cable and UL910 plenum non-fluorine protection layer high performance data cable | |
| CN211265084U (en) | Heat dissipation cable and heat dissipation optical cable | |
| CN213123885U (en) | Crosslinked polyethylene insulation halogen-free low-smoke flame-retardant instrument cable | |
| CN111009342A (en) | Temperature-resistant cable | |
| JP7316775B2 (en) | cable | |
| CN217361187U (en) | Polyethylene insulation low-voltage multi-core shielding control cable | |
| CN218069390U (en) | Tensile 4-core low-voltage fire-resistant cable | |
| CN210896707U (en) | Stretch-proof flame-retardant water-blocking cable | |
| CN211628747U (en) | Waterproof fireproof cable of high elasticity | |
| CN211578455U (en) | High-performance transmission cable | |
| CN219658416U (en) | Tensile bending-resistant medical equipment cable | |
| CN213660033U (en) | Multi-strand type separation cable | |
| CN219610073U (en) | Double-sheath flame-retardant local area network cable | |
| CN215118360U (en) | Super-flexible fireproof cable | |
| CN210896653U (en) | Flexible direct current cable | |
| CN218512683U (en) | Signal transmission cable for rail transit | |
| CN215577899U (en) | Novel special analog signal cable | |
| CN212907146U (en) | Electric pile cable is filled in withstand voltage and fire prevention of tensile | |
| CN214476474U (en) | High-voltage shielding flexible cable | |
| CN220569441U (en) | High-strength steel wire reel cable | |
| CN220232774U (en) | Novel cable with good insulation effect | |
| CN216487369U (en) | Compound insulating flexible fireproof cable | |
| CN212624835U (en) | High temperature resistant and cable of being convenient for deposit | |
| CN212934216U (en) | Intrinsically safe computer cable with polyethylene insulation flame-retardant polyvinyl chloride sheath |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |