CN215342085U - Flame-retardant cable for rail transit - Google Patents
Flame-retardant cable for rail transit Download PDFInfo
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- CN215342085U CN215342085U CN202120713881.7U CN202120713881U CN215342085U CN 215342085 U CN215342085 U CN 215342085U CN 202120713881 U CN202120713881 U CN 202120713881U CN 215342085 U CN215342085 U CN 215342085U
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Abstract
The utility model discloses a flame-retardant cable for rail transit, which comprises a cable main body, wherein the interior of the cable main body is formed by a fireproof wrapping, a flame-retardant sleeve and a flame-retardant inner core, the fireproof wrapping is wrapped on the outer surface of the flame-retardant sleeve, a PVC flame-retardant sleeve, a flame-retardant covering layer, a high-temperature-resistant layer and a heat-insulating surface layer are arranged in the fireproof wrapping respectively, the PVC flame-retardant sleeve is wrapped on the outer surface of the flame-retardant covering layer, the high-temperature-resistant layer is wrapped on the inner surface of the flame-retardant covering layer, the interior of the flame-retardant sleeve is formed by a flame-retardant fiber covering layer, a PP flame-retardant layer and flame-retardant rubber, and the interior of the flame-retardant inner core is formed by a cable core body, a flame-retardant coating layer, a flame-retardant filling layer and a sealing wrapping. According to the utility model, the inner cable core is wrapped and protected layer by the multi-layer fireproof flame-retardant structure, so that the cable has good structural toughness and flame retardant property, the cable core is not damaged in case of fire, and a good safety protection effect is achieved.
Description
Technical Field
The utility model relates to the technical field of cables, in particular to a flame-retardant cable for track traffic.
Background
The power cable is used for transmitting and distributing electric energy, and is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and power transmission lines under river-crossing seawater. In the power lines, the cable is increasing in specific gravity. Power cables are cable products used in the trunk lines of power systems to transmit and distribute high power electrical energy, including various voltage classes, 1-500KV and above, and various insulated power cables. The China economy continues to grow rapidly, a huge market space is provided for cable products, strong attraction is brought to the China market, the world focuses on the China market, and the huge production capacity formed by the China cable manufacturing industry makes the world look at after the short decades of reform are opened.
The flame-retardant cable for the current track traffic has poor fireproof flame-retardant performance, does not have good safety protection effect, and is easy to cause damage to an inner core of the cable, so that the market urgently needs to develop a novel flame-retardant cable for the track traffic.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a flame-retardant cable for rail transit, which aims to solve the problems that the conventional flame-retardant cable for rail transit in the background art is poor in fireproof flame-retardant performance, does not have a good safety protection effect and is easy to cause damage to an inner core of the cable.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a flame retardant cable for track traffic, includes the cable main part, the inside of cable main part comprises fire prevention foreskin, fire-retardant sleeve pipe and fire-retardant inner core jointly, and the fire prevention foreskin cladding is at fire-retardant sheathed tube surface, and fire-retardant sleeve pipe cladding is at the surface of fire-retardant inner core, the inside of fire-retardant foreskin is provided with the fire-retardant cover of PVC, fire-resistant covering, high temperature resistant layer and thermal-insulated surface course respectively, and the fire-retardant cover cladding of PVC is at the surface of fire-resistant covering, and high temperature resistant layer cladding is at the internal surface of fire-resistant covering, the inside of fire-retardant sleeve pipe comprises fire-retardant fiber cladding, PP fire retardant layer and flame retardant rubber jointly, the inside of fire-retardant inner core comprises cable core, fire prevention coating layer, fire retardant filling layer and sealed canning jointly.
Preferably, the heat insulation surface layer is coated in the middle of the high temperature resistant layer and the flame retardant sleeve.
Preferably, the flame-retardant fiber cladding is coated on the outer surface of the PP flame retardant layer, and the PP flame retardant layer is coated on the outer surface of the flame-retardant rubber.
Preferably, the fireproof coating layer is coated on the outer surface of the flame retardant filling layer, and the fireproof coating layer is coated on the outer surface of the flame retardant filling layer.
Preferably, the sealing sheath is wrapped on the outer surface of the cable core body, and the sealing sheath is tightly attached to the cable core body.
Preferably, the flame-retardant sleeve is provided with seven, and the flame-retardant inner core is provided with three.
Compared with the prior art, the utility model has the beneficial effects that:
(1) the inner part of the cable main body is composed of a fireproof wrapping, a flame-retardant sleeve and a flame-retardant inner core, a PVC flame-retardant sleeve, a fireproof covering, a high-temperature-resistant layer and a heat-insulating surface layer are arranged in the fireproof wrapping respectively, the PVC flame-retardant sleeve has good flame-retardant environment-friendly effect and is nontoxic and tasteless by being provided with the PVC flame-retardant sleeve, the inside of the fireproof covering is pressed by adopting a fireproof flame-retardant material, the high-temperature-resistant layer can effectively resist external high temperature and prevent high temperature from entering the cable, and the heat-insulating surface layer further plays a good heat-insulating protection role;
(2) the flame-retardant sleeve is internally composed of a flame-retardant fiber cladding, a PP flame retardant layer and flame-retardant rubber, the flame-retardant fiber cladding is formed by pressing a PVC/nitrile rubber blend, the flame-retardant sleeve is good in flame-retardant property and can not be combusted, and the flame retardant is filled in the PP flame retardant layer, so that the fire spread can be further prevented;
(3) the inside of fire-retardant inner core comprises cable core, fire prevention coating layer, fire retardant filling layer and sealed canning jointly, and fire prevention coating layer possesses high temperature resistant fire behavior, and the fire retardant filling layer plays fire-retardant fire extinguishing effect, and sealed canning adopts the relatively poor alloy structure suppression of high temperature resistant heat conductivity, closely laminates the parcel with the cable core, plays sealed protection effect.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is a schematic view of the internal structure of the fire-retardant covering of the present invention;
FIG. 4 is a schematic view of the internal structure of the flame retardant sleeve of the present invention;
fig. 5 is a schematic view of the internal structure of the flame retardant core of the present invention.
In the figure: 1. a cable body; 2. a fire-proof wrapper; 3. a flame-retardant sleeve; 4. a flame retardant inner core; 5. a PVC flame-retardant sleeve; 6. a refractory cladding; 7. a high temperature resistant layer; 8. a thermally insulating facing; 9. a flame retardant fiber cladding; 10. a PP flame retardant layer; 11. a flame retardant rubber; 12. a fire retardant coating layer; 13. a flame retardant filler layer; 14. sealing the sheath; 15. a cable core.
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.
Referring to fig. 1-5, an embodiment of the present invention is shown: the utility model provides a flame retarded cable for track traffic, including cable main body 1, the inside of cable main body 1 is by fire prevention foreskin 2, fire-retardant sleeve pipe 3 and fire-retardant inner core 4 constitute jointly, fire prevention foreskin 2 cladding is at the surface of fire-retardant sleeve pipe 3, fire-retardant sleeve pipe 3 cladding is at the surface of fire-retardant inner core 4, the inside of fire prevention foreskin 2 is provided with PVC fire-retardant cover 5 respectively, fire-resistant covering 6, high temperature resistant layer 7 and thermal-insulated surface course 8, the surface of fire-resistant covering 6 of PVC cladding 5 cladding, high temperature resistant layer 7 cladding is at the internal surface of fire-resistant covering 6, the inside of fire-retardant sleeve pipe 3 is by fire-retardant fiber cladding 9, PP fire retardant layer 10 and fire-retardant rubber 11 constitute jointly, the inside of fire-retardant inner core 4 is by cable core 15, fire-retardant coating layer 12, fire-retardant filling layer 13 and sealed canning 14 constitute jointly.
Further, the heat insulation surface layer 8 is coated in the middle of the high temperature resistant layer 7 and the flame retardant sleeve 3.
Further, the flame retardant fiber cladding 9 is coated on the outer surface of the PP flame retardant layer 10, and the PP flame retardant layer 10 is coated on the outer surface of the flame retardant rubber 11.
Further, the fireproof coating layer 12 is coated on the outer surface of the flame retardant filling layer 13, and the fireproof coating layer 12 is coated on the outer surface of the flame retardant filling layer 13.
Further, the sealing sheath 14 covers the outer surface of the cable core 15, and the sealing sheath 14 is tightly attached to the cable core 15.
Further, seven flame-retardant sleeves 3 are arranged, and three flame-retardant inner cores 4 are arranged.
The working principle is as follows: when the cable is used, the interior of the cable main body 1 is formed by a fireproof wrapping 2, a flame-retardant sleeve 3 and a flame-retardant inner core 4 together, the fireproof wrapping 2 is wrapped on the outer surface of the flame-retardant sleeve 3, the flame-retardant sleeve 3 is wrapped on the outer surface of the flame-retardant inner core 4, the interior of the fireproof wrapping 2 is respectively provided with a PVC flame-retardant sleeve 5, a fire-resistant covering 6, a high-temperature-resistant layer 7 and a heat-insulating surface layer 8, the PVC flame-retardant sleeve 5 has good flame-retardant and environment-friendly effects and is non-toxic and tasteless, the interior of the fire-resistant covering 6 is pressed by a flame-retardant material, the high-temperature-resistant layer 7 can effectively resist external high temperature and prevent high temperature from entering the interior of the cable, the heat-insulating surface layer 8 further plays a good heat-insulating and protecting role, the interior of the flame-retardant sleeve 3 is formed by a flame-retardant fiber covering 9, a PP flame-retardant layer 10 and flame-retardant rubber 11 together, and the flame-retardant fiber covering 9 is pressed by a PVC/nitrile-butadiene-acrylonitrile rubber blend, the flame retardant PP cable core has good flame retardant property and cannot be combusted, the flame retardant is filled in the PP flame retardant layer 10, the fire spread can be further prevented, the flame retardant inner core 4 is composed of the cable core body 15, the fireproof coating layer 12, the flame retardant filling layer 13 and the sealing sheath 14, the fireproof coating layer 12 has high-temperature resistance and fireproof performance, the flame retardant filling layer 13 plays a role in flame retardant and fire extinguishing, the sealing sheath 14 is pressed by adopting an alloy structure with poor high-temperature resistance and thermal conductivity and is tightly attached and wrapped with the cable core body 15 to play a role in sealing protection.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides a flame retardant cable for track traffic, includes cable main part (1), its characterized in that, the inside of cable main part (1) comprises fire prevention foreskin (2), fire-retardant sleeve pipe (3) and fire-retardant inner core (4) jointly, and fire prevention foreskin (2) cladding is at the surface of fire-retardant sleeve pipe (3), and fire-retardant sleeve pipe (3) cladding is at the surface of fire-retardant inner core (4), the inside of fire prevention foreskin (2) is provided with PVC fire-retardant cover (5) respectively, fire-resistant covering (6), high temperature resistant layer (7) and thermal-insulated surface course (8), and PVC fire-retardant cover (5) cladding is at the surface of fire-resistant covering (6), and high temperature resistant layer (7) cladding is at the internal surface of fire-resistant covering (6), the inside of fire-retardant sleeve pipe (3) comprises fire-retardant fibre covering (9), PP fire retardant layer (10) and fire-retardant rubber (11) jointly, the inside of fire-retardant inner core (4) is by cable core (15), The fireproof coating layer (12), the flame retardant filling layer (13) and the sealing sheath (14).
2. The flame retardant cable for rail transit according to claim 1, wherein: the heat insulation surface layer (8) is coated in the middle of the high temperature resistant layer (7) and the flame retardant sleeve (3).
3. The flame retardant cable for rail transit according to claim 1, wherein: the flame-retardant fiber cladding (9) is coated on the outer surface of the PP flame retardant layer (10), and the PP flame retardant layer (10) is coated on the outer surface of the flame-retardant rubber (11).
4. The flame retardant cable for rail transit according to claim 1, wherein: the fireproof coating layer (12) is coated on the outer surface of the flame retardant filling layer (13), and the fireproof coating layer (12) is coated on the outer surface of the flame retardant filling layer (13).
5. The flame retardant cable for rail transit according to claim 1, wherein: the sealing sheath (14) is coated on the outer surface of the cable core body (15), and the sealing sheath (14) is tightly attached to the cable core body (15).
6. The flame retardant cable for rail transit according to claim 1, wherein: seven flame-retardant sleeves (3) are arranged, and three flame-retardant inner cores (4) are arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120713881.7U CN215342085U (en) | 2021-04-08 | 2021-04-08 | Flame-retardant cable for rail transit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120713881.7U CN215342085U (en) | 2021-04-08 | 2021-04-08 | Flame-retardant cable for rail transit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215342085U true CN215342085U (en) | 2021-12-28 |
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ID=79593051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120713881.7U Active CN215342085U (en) | 2021-04-08 | 2021-04-08 | Flame-retardant cable for rail transit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215342085U (en) |
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2021
- 2021-04-08 CN CN202120713881.7U patent/CN215342085U/en active Active
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