CN216133689U - Water-wading cable for rail-mounted RRU power supply - Google Patents
Water-wading cable for rail-mounted RRU power supply Download PDFInfo
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- CN216133689U CN216133689U CN202122059484.5U CN202122059484U CN216133689U CN 216133689 U CN216133689 U CN 216133689U CN 202122059484 U CN202122059484 U CN 202122059484U CN 216133689 U CN216133689 U CN 216133689U
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Abstract
The utility model discloses a wading cable for a rail-mounted RRU power supply, which adopts the technical scheme that: the core comprises a core body, wherein a belting layer is fixedly connected to the outer wall of the core body, a first shielding layer is fixedly connected to the outer wall of the belting layer, an inner protective sleeve layer is fixedly connected to the outer wall of the first shielding layer, a second shielding layer is fixedly connected to the outer wall of the inner protective sleeve layer, an outer protective sleeve layer is fixedly connected to the outer wall of the second shielding layer, and wear-resistant convex particles are arranged on the outer wall of the outer protective sleeve layer; the core body comprises a plurality of conductor wire cores, an insulating filling layer, a plurality of first tensile ribs and second tensile ribs, and insulating belts are arranged on the outer walls of the conductor wire cores; the problems that in the prior art, the flame retardant performance and the fire resistance of the wading cable are poor, the wading cable cannot be immersed in water for a long time, cannot adapt to different geographic environments, and is poor in practicability are effectively solved.
Description
Technical Field
The utility model relates to the field of cables, in particular to a water-wading cable for a rail-mounted RRU power supply.
Background
The cable is an electric energy or signal transmission device and generally consists of a plurality of wires or groups of wires; with the increasing investment of the country on rail transit, most of domestic cities have their own subways, and the requirements on application and subway environment cables are higher and higher. However, the existing cable for rail transit is poor in flame retardant property and fire resistance, cannot be soaked in water for a long time, cannot adapt to different geographical environments, and is poor in practicability.
SUMMERY OF THE UTILITY MODEL
In view of the problems mentioned in the background art, an object of the present invention is to provide a water-involved cable for rail-mounted RRU power supply, so as to solve the problems mentioned in the background art.
The technical purpose of the utility model is realized by the following technical scheme:
a wading cable for a rail transit RRU power supply comprises a core body, wherein a wrapping belt layer is fixedly connected to the outer wall of the core body, a first shielding layer is fixedly connected to the outer wall of the wrapping belt layer, an inner protective sleeve layer is fixedly connected to the outer wall of the first shielding layer, a second shielding layer is fixedly connected to the outer wall of the inner protective sleeve layer, an outer protective sleeve layer is fixedly connected to the outer wall of the second shielding layer, and wear-resistant convex particles are arranged on the outer wall of the outer protective sleeve layer;
the core includes a plurality of conductor sinle silks, insulating filling layer, a plurality of first tensile rib and second tensile rib, the outer wall of conductor sinle silk is provided with the insulating band, and is a plurality of first tensile rib evenly distributed is in a plurality of between the conductor sinle silk, second tensile rib sets up in a plurality of the center department of conductor sinle silk.
The wading cable for the RRU power supply on the rail is characterized in that through the arrangement of the inner protective sleeve layer and the outer protective sleeve layer, the waterproof performance and the flame retardance of the wading cable can be effectively improved, and through the arrangement of the first shielding layer and the second shielding layer, can effectively improve the shielding effect of the wading cable, prevent the interference of external electric signals, improve the wear-resisting property of the wading cable through the arrangement of the wear-resisting convex particles, the outer protective sheath layer can be protected when being dragged, the outer protective sheath layer is prevented from being damaged, and the utility model has excellent waterproof, flame retardant, fire resistant, wear resistant and shielding performances in conclusion, the waterproof cable can be suitable for different geographic environments, can be soaked for a long time, and effectively solves the problems that in the prior art, a waterproof cable is poor in flame retardant property and fire resistance, cannot be soaked for a long time, cannot adapt to different geographic environments, and is poor in practicability;
this rail is handed over RRU power and is used paddle cable, through the setting on insulating filling layer, insulating tape and band layer, can effectively improve paddle cable's insulating properties, improve the safety in utilization, through the setting of first tensile rib and second tensile rib, can fully improve paddle cable's tensile property, can protect the conductor sinle silk when the construction is dragged.
Preferably, the belting layer comprises a polyester belt and an aluminum-plastic composite belt, and the aluminum-plastic composite belt is arranged on the outer side of the polyester belt; the polyester tape has high mechanical strength, excellent insulating property, high temperature resistance and low temperature resistance, is a good wrapping material, has good viscosity, can facilitate coating, has high structural strength, and can improve the structural stability of the wading cable.
Preferably, the first shielding layer and the second shielding layer are both copper strip shielding layers; the copper strip shielding layer mainly plays a role in resisting external electromagnetic interference and preventing interference of an electromagnetic field generated by the copper strip shielding layer to the surrounding environment and fault current passing in the use process.
Preferably, the insulating tape is a synthetic mica insulating tape; synthetic mica is an excellent fire-resistant insulating material, and can improve the fire resistance and the insulating property of the wading cable.
Preferably, the inner protective cover layer comprises a polyethylene sleeve, a water blocking tape and a synthetic mica tape, the polyethylene sleeve is arranged on the outer side of the first shielding layer, the water blocking tape is arranged on the outer wall of the polyethylene sleeve, and the synthetic mica tape is arranged on the outer wall of the water blocking tape; the polyethylene sleeve has excellent toughness, the bending resistance of the wading cable can be improved, the water blocking tape can effectively prevent water flow from permeating, the synthetic mica is an excellent fireproof insulating material, and the fireproof property and the insulating property of the wading cable can be improved.
Preferably, the outer protective cover layer comprises a longitudinally-covered copper strip and a halogen-free flame-retardant polyolefin protective cover; the longitudinally-wrapped copper strip has good shielding resistance and support property, the halogen-free flame-retardant polyolefin only generates little smoke under the condition of flame combustion, the flame retardance of the longitudinally-wrapped copper strip is good, meanwhile, the gas released by combustion does not contain halogen elements, and the longitudinally-wrapped copper strip is non-toxic and harmless and can greatly reduce the harm of harmful smoke to human bodies.
Preferably, the insulating filling layer is a flame-retardant glass fiber filling layer; the flame-retardant glass fiber has excellent high-temperature resistance and fire resistance, and can improve the fire resistance.
In summary, the utility model mainly has the following beneficial effects:
firstly, the wading cable for the RRU power supply is arranged through an inner protective sleeve layer and an outer protective sleeve layer, the waterproof performance and the flame retardance of the wading cable can be effectively improved, and through the arrangement of the first shielding layer and the second shielding layer, can effectively improve the shielding effect of the wading cable, prevent the interference of external electric signals, improve the wear-resisting property of the wading cable through the arrangement of the wear-resisting convex particles, the outer protective sheath layer can be protected when being dragged, the outer protective sheath layer is prevented from being damaged, and the utility model has excellent waterproof, flame retardant, fire resistant, wear resistant and shielding performances in conclusion, the waterproof cable can be suitable for different geographic environments, can be soaked for a long time, and effectively solves the problems that in the prior art, a waterproof cable is poor in flame retardant property and fire resistance, cannot be soaked for a long time, cannot adapt to different geographic environments, and is poor in practicability;
second, this rail is handed over RRU power and is used wading cable, through the setting on insulating filling layer, insulating tape and band layer, can effectively improve this wading cable's insulating properties, improves the safety in utilization, through the setting of first tensile rib and second tensile rib, can fully improve this wading cable's tensile properties, can protect the conductor sinle silk when the construction is dragged.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a belting layer structure according to the present invention;
FIG. 3 is a schematic structural view of an inner protective sheath layer according to the present invention;
fig. 4 is a schematic structural view of an outer protective sheath layer according to the present invention.
Reference numerals: 1. a core body; 11. a conductor core; 12. an insulating filling layer; 13. a first tensile rib; 14. a second tensile rib; 15. an insulating tape; 2. a belting layer; 21. a polyester tape; 22. an aluminum-plastic composite tape; 3. a first shielding layer; 4. an inner protective sheath layer; 41. a polyethylene sheath; 42. a water blocking tape; 43. synthesizing a mica tape; 5. a second shielding layer; 6. an outer protective sheath layer; 61. longitudinally wrapping a copper strip; 62. a halogen-free flame-retardant polyolefin sheath; 7. wear-resistant convex particles.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1-4, a wading cable for rail transit RRU power supply comprises a core body 1, wherein the outer wall of the core body 1 is fixedly connected with a belting layer 2, the outer wall of the belting layer 2 is fixedly connected with a first shielding layer 3, the outer wall of the first shielding layer 3 is fixedly connected with an inner protective sleeve layer 4, the outer wall of the inner protective sleeve layer 4 is fixedly connected with a second shielding layer 5, the outer wall of the second shielding layer 5 is fixedly connected with an outer protective sleeve layer 6, the outer wall of the outer protective sleeve layer 6 is provided with wear-resistant convex particles 7, and the wear-resistant convex particles 7 are integrally formed on the outer wall of the outer protective sleeve layer 6;
Referring to fig. 2, the belting layer 2 includes a polyester belt 21 and an aluminum-plastic composite belt 22, the aluminum-plastic composite belt 22 is disposed outside the polyester belt 21; the polyester tape 21 has high mechanical strength, excellent insulating property, high temperature resistance and low temperature resistance, is a good wrapping material, and the aluminum-plastic composite tape 22 has good viscosity, can facilitate coating, has high structural strength and can improve the structural stability of the wading cable.
Referring to fig. 1, the first shielding layer 3 and the second shielding layer 5 are both copper tape shielding layers; the copper strip shielding layer mainly plays a role in resisting external electromagnetic interference and preventing interference of an electromagnetic field generated by the copper strip shielding layer to the surrounding environment and fault current passing in the use process.
Referring to fig. 1, the insulating tape 15 is a synthetic mica insulating tape; synthetic mica is an excellent fire-resistant insulating material, and can improve the fire resistance and the insulating property of the wading cable.
Referring to fig. 3, the inner protective sheath layer 4 includes a polyethylene sheath 41, a water blocking tape 42, and a synthetic mica tape 43, the polyethylene sheath 41 is disposed outside the first shielding layer 3, the water blocking tape 42 is disposed on the outer wall of the polyethylene sheath 41, and the synthetic mica tape 43 is disposed on the outer wall of the water blocking tape 42; the polyethylene sleeve 41 has excellent toughness, the bending resistance of the wading cable can be improved, the water blocking tape 42 can effectively prevent water flow from permeating, the waterproof performance is excellent, and the synthetic mica tape 43 is an excellent fireproof insulating material and can improve the fire resistance and the insulativity of the wading cable.
Referring to fig. 4, the outer protective sheath layer 6 comprises a longitudinally wrapped copper tape 61 and a halogen-free flame retardant polyolefin sheath 62; the longitudinally wrapped copper strip 61 has good shielding resistance and support performance, the halogen-free flame-retardant polyolefin only generates little smoke under the condition of flame combustion, the flame retardance is good, meanwhile, the gas released by combustion does not contain halogen elements, and the halogen-free flame-retardant polyolefin is non-toxic and harmless, and can greatly reduce the harm of harmful smoke to human bodies.
Referring to fig. 1, the insulating filling layer 12 is a flame-retardant glass fiber filling layer; the flame-retardant glass fiber has excellent high-temperature resistance and fire resistance, and can improve the fire resistance.
The use principle and the advantages are as follows:
the water-wading cable for the RRU power supply is arranged on the rail through the inner protective sleeve layer 4 and the outer protective sleeve layer 6, the waterproof performance and the flame retardance of the wading cable can be effectively improved, and through the arrangement of the first shielding layer 3 and the second shielding layer 5, can effectively improve the shielding effect of the wading cable, prevent the interference of external electric signals, can improve the wear-resisting property of the wading cable through the arrangement of the wear-resisting convex particles 7, the outer protective sheath layer 6 can be protected during towing, and the outer protective sheath layer 6 is prevented from being damaged, so that the utility model has excellent waterproof, flame-retardant, fire-resistant, wear-resistant and shielding performances, the waterproof cable can be suitable for different geographic environments, can be soaked for a long time, and effectively solves the problems that in the prior art, a waterproof cable is poor in flame retardant property and fire resistance, cannot be soaked for a long time, cannot adapt to different geographic environments, and is poor in practicability;
this rail is handed over RRU power and is used paddle cable, through insulating filling layer 12, insulating tape 15 and band layer 2's setting, can effectively improve this paddle cable's insulating properties, improve the safety in utilization, through the setting of first tensile rib 13 with the anti lacing wire strip 14 of second, can fully improve this paddle cable's tensile property, can protect conductor sinle silk 11 when the construction is dragged.
The conductor wire core 11 is formed by combining an annealed soft copper wire and a lapping layer into a mica tape.
The insulating filling layer 12 is made of cross-linked polyethylene.
The insulating tape 15 is made of environment-friendly high-flame-retardant glass fiber rope.
The conductor wire core 11 ensures the roundness and the flexibility of the soft conductor by controlling the elongation of the annealed copper wire.
The cross-linked polyethylene insulating extrusion process is controlled, the cross section of the conductor is tightly extruded and wrapped on the conductor, bubbles and impurities are not visible, the appearance is round and neat, the cross-linking is sufficient, and the conductor is easy to peel off.
The cabling process is controlled, and environment-friendly high-flame-retardant glass fiber ropes are filled, so that the insulation tension of each cable is consistent. During cabling, two layers of synthetic mica tapes are wrapped. And simultaneously wrapping two layers of polyester tapes and one layer of aluminum-plastic composite tape.
The overlapping rate of the copper strip shielding layer is 25 percent.
The extrusion process of the inner protective sleeve layer 4 high-density polyethylene material adopts a semi-extrusion type die to directly extrude and wrap the cable core with the wrapping tape, so that the gap filling of the cable core is ensured to be tight. The surface should be smooth and round, the color should be basically consistent, and the cross section should have no visible bubbles and impurities. Then wrapping two layers of water-blocking tapes, and wrapping two layers of mica tapes.
The extrusion process of the high-flame-retardant low-smoke halogen-free polyolefin material of the outer protective sleeve layer 6 adopts a semi-extrusion type die to directly extrude and wrap the cable core with the longitudinally wrapped copper strip, so that the gap filling of the cable core is ensured to be tight. The surface should be smooth and round, the color should be basically consistent, and the cross section should have no visible bubbles and impurities.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a rail is handed over RRU power and is used cable of wading with which characterized in that: the anti-abrasion core comprises a core body (1), wherein a wrapping belt layer (2) is fixedly connected to the outer wall of the core body (1), a first shielding layer (3) is fixedly connected to the outer wall of the wrapping belt layer (2), an inner protective sleeve layer (4) is fixedly connected to the outer wall of the first shielding layer (3), a second shielding layer (5) is fixedly connected to the outer wall of the inner protective sleeve layer (4), an outer protective sleeve layer (6) is fixedly connected to the outer wall of the second shielding layer (5), and abrasion-resistant convex particles (7) are arranged on the outer wall of the outer protective sleeve layer (6);
the core (1) includes a plurality of conductor sinle silks (11), insulating filling layer (12), a plurality of first tensile rib (13) and second tensile rib (14), the outer wall of conductor sinle silk (11) is provided with insulating tape (15), and is a plurality of first tensile rib (13) evenly distributed is a plurality of between conductor sinle silk (11), second tensile rib (14) set up a plurality of the center department of conductor sinle silk (11).
2. The paddle cable of claim 1, wherein the paddle cable is configured to be used in a rail-mounted RRU power supply: the belting layer (2) comprises a polyester belt (21) and an aluminum-plastic composite belt (22), and the aluminum-plastic composite belt (22) is arranged on the outer side of the polyester belt (21).
3. The paddle cable of claim 1, wherein the paddle cable is configured to be used in a rail-mounted RRU power supply: the first shielding layer (3) and the second shielding layer (5) are both copper strip shielding layers.
4. The paddle cable of claim 1, wherein the paddle cable is configured to be used in a rail-mounted RRU power supply: the insulating tape (15) is a synthetic mica insulating tape.
5. The paddle cable of claim 1, wherein the paddle cable is configured to be used in a rail-mounted RRU power supply: the inner waterproof jacket layer (4) comprises a polyethylene jacket (41), a water blocking tape (42) and a synthetic mica tape (43), the polyethylene jacket (41) is arranged on the outer side of the first shielding layer (3), the water blocking tape (42) is arranged on the outer wall of the polyethylene jacket (41), and the synthetic mica tape (43) is arranged on the outer wall of the water blocking tape (42).
6. The paddle cable of claim 1, wherein the paddle cable is configured to be used in a rail-mounted RRU power supply: the outer protective sleeve layer (6) comprises a longitudinally wrapped copper strip (61) and a halogen-free flame-retardant polyolefin sheath (62).
7. The paddle cable of claim 1, wherein the paddle cable is configured to be used in a rail-mounted RRU power supply: the insulating filling layer (12) is a flame-retardant glass fiber filling layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122059484.5U CN216133689U (en) | 2021-08-30 | 2021-08-30 | Water-wading cable for rail-mounted RRU power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122059484.5U CN216133689U (en) | 2021-08-30 | 2021-08-30 | Water-wading cable for rail-mounted RRU power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216133689U true CN216133689U (en) | 2022-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122059484.5U Active CN216133689U (en) | 2021-08-30 | 2021-08-30 | Water-wading cable for rail-mounted RRU power supply |
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| Country | Link |
|---|---|
| CN (1) | CN216133689U (en) |
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2021
- 2021-08-30 CN CN202122059484.5U patent/CN216133689U/en active Active
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