CN217822169U - Fireproof cable for low-temperature-resistant transmission signals - Google Patents
Fireproof cable for low-temperature-resistant transmission signals Download PDFInfo
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- CN217822169U CN217822169U CN202221242400.XU CN202221242400U CN217822169U CN 217822169 U CN217822169 U CN 217822169U CN 202221242400 U CN202221242400 U CN 202221242400U CN 217822169 U CN217822169 U CN 217822169U
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- field shielding
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- shielding layer
- electric field
- cable
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
Abstract
The utility model relates to a low temperature resistant fireproof cable for transmission signal, including electric field shielding layer and cladding in a plurality of cable cores of electric field shielding in situ, the packing is fixed with high temperature resistant filling layer between cable core and the electric field shielding layer, the electric field shielding layer outside cladding has high temperature resistant inner sheath, magnetic field shielding layer and resistant oily low temperature resistant oversheath in proper order. The utility model discloses simple structure has excellent low temperature resistance and fire behavior, and processing is simple low price, can use under the comparatively strict condition of bending property requirement.
Description
Technical Field
The utility model relates to a wire and cable technical field especially relates to a low temperature resistant fireproof cable for transmission signal.
Background
The wire and cable is used for transmitting electric (magnetic) energy, information and wire products for realizing electromagnetic energy conversion. A broad range of wire and cable, also referred to as simply cable, and a narrow range of cable refers to insulated cable, which can be defined as: an aggregate consisting of; one or more insulated wire cores, and their respective possible coatings, total protective layers and outer protective layers. In recent years, along with the increase of high-rise buildings and the frequent occurrence of fire accidents, a lot of warnings are brought to people. Under the fire state, the circuit normally operates, the transmission of electric energy and signals is guaranteed, and conditions can be created for escape of personnel and rescue of wounded personnel by firefighters. The fireproof cables in the market at present are respectively rigid BTTQ, BTTYZ and the like and flexible BTLY, BTTRZ and the like. BTTQ, RTTYZ, BTLY class product processing are complicated, and have the copper sheath, and the price is higher relatively, and BTTRZ class product does not have the copper sheath, though the cost is lower, but fire behavior also inevitably is reduced, and can't tolerate the low temperature of 40 degrees centigrade below zero.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that overcome exist among the prior art not enough, provide a low temperature resistant fireproof cable for transmission signal.
The utility model discloses a realize through following technical scheme:
the utility model provides a low temperature resistant fireproof cable for transmission signal, includes electric field shielding layer and a plurality of cable cores of cladding in the electric field shielding layer, and the packing is fixed with high temperature resistant filling layer between cable core and the electric field shielding layer, the electric field shielding layer outside cladding has high temperature resistant inner sheath, magnetic field shielding layer and resistant oily low temperature resistant oversheath in proper order.
Preferably, the cable core includes the conductor, winds the mica tape of wrapping to the conductor outside and wraps the insulating layer to the mica tape outside.
Preferably, the insulating layer is made of a ceramic polyolefin insulating material, and the high-temperature-resistant filling layer and the high-temperature-resistant inner sheath are both made of a ceramic polyolefin sheath material.
Preferably, the electric field shielding layer is a copper braided shielding net.
Preferably, the magnetic field shielding layer is a steel braided shielding net.
Preferably, the oil-resistant low-temperature-resistant outer sheath is made of a nitrile rubber material.
The utility model has the advantages that:
the utility model discloses simple structure, excellent low temperature resistance has, can tolerate the low temperature of 40 degrees centigrade below zero, high temperature resistant filling layer and high temperature resistant inner sheath structure closely and guarantee the cable core at crooked in-process stable in structure, when the conflagration takes place, the flame of high temperature makes the pottery form fire-resistant ceramic layer that crust formation after the polyolefin burning, this fire-resistant ceramic layer can completely cut off flame and heat to the inside transmission of cable and spread, the electrical property of the inside insulation sinle silk of powerful protection ceramic layer, guarantee circuit still normally works and transmission signal under the conflagration condition, fire behavior is superior to BBTRZ class cable on the existing market, relative BTTQ, RTTYZ, processing simple low price is said to BTLY class product, can use under the comparatively strict condition of bending property requirement, can effectively shield external electric field and magnetic field to conductor transmission signal's influence simultaneously, guarantee signal safety, stable and undisturbed transmission.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a conductor; 2. mica tapes; 3. an insulating layer; 4. a high temperature resistant filler layer; 5. an electric field shielding layer; 6. a high temperature resistant inner sheath; 7. a magnetic field shielding layer; 8. an oil-resistant low-temperature-resistant outer sheath.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
As shown in the figure, the utility model discloses an electric field shielding layer and cladding are in the intraformational a plurality of cable cores of electric field shielding, the electric field shielding layer is copper woven shielding net for prevent the interference of external electric field, the packing is fixed with high temperature resistant filling layer between cable core and the electric field shielding layer, and high temperature resistant filling layer is made by the crowded package of porcelainizing polyolefin sheath material, and this material viscosity is big, and mobility is poor, must use the special screw rod of low compression ratio during production, in order to reach the effect of outward appearance rounding, uses extrusion formula mould extrusion one time during the production of high temperature resistant filling layer, makes it fill in the cable core clearance, guarantees that it combines closely with the cable core, the electric field shielding layer outside cladding has high temperature resistant inner sheath, magnetic field shielding layer and resistant low temperature resistant oversheath of resistant oil in proper order, high temperature resistant inner sheath is made by porcelainizing polyolefin sheath material, prevents that electric field shielding layer and magnetic field shielding layer from contacting while can be heated crust high temperature resistant, the shielding layer is woven shielding net for the steel for prevent the interference of external magnetic field, resistant oil low temperature resistant is made by the butadiene acrylonitrile rubber material, has resistant oil resistance performance, guarantees that oil cable still can normally work and low temperature transmission signal.
The cable core includes the conductor, winds the mica tape of package to the conductor outside and the insulating layer of cladding to the mica tape outside, should level and smoothly not corrugate and the mica tape should laminate closely with the conductor around package mica tape surface, and the mica tape can make the cable have good high temperature resistance, the insulating layer is made by ceramic polyolefin insulating material, thereby can prevent that the mica tape from absorbing moisture and having guaranteed the insulating electrical property of mica tape, also has good high temperature resistance simultaneously.
The utility model discloses a principle is, the composite bed that mica tape and insulating layer constitute jointly compares insulating electrical property superiorly with the insulating RTTYZ class product of mica tape, the composite bed insulation has superior high temperature resistance simultaneously, high temperature resistant filling layer and high temperature resistant inner sheath structure closely and guarantee the cable core at crooked in-process stable in structure, when the conflagration takes place, the flame of high temperature makes the crust form fire-resistant ceramic layer after the burning of pottery polyolefin, this ceramic layer can isolate flame and heat to the inside transmission of cable and stretch, the electrical property of powerful inside insulation core of protection ceramic layer, guarantee circuit still normally works and transmission signal under the conflagration condition, the double-shielded structure that electric field shielding layer and magnetic field shielding layer constitute jointly can effectively shield external electric field and magnetic field to the influence of conductor transmission signal, guarantee signal safety, stable and the transmission that does not receive the interference, resistant oily low temperature outer sheath has resistant low temperature resistance, can guarantee that the cable still can normally work and transmission signal at the low temperature of 40 degrees below zero.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. The utility model provides a low temperature resistant fireproof cable for transmission signal which characterized in that, includes electric field shielding layer and a plurality of cable cores of cladding in electric field shielding layer, and the packing is fixed with high temperature resistant filling layer between cable core and the electric field shielding layer, the electric field shielding layer outside cladding has high temperature resistant inner sheath, magnetic field shielding layer and resistant oily low temperature outer sheath in proper order.
2. The fireproof cable for low-temperature-resistant signal transmission according to claim 1, wherein the cable core comprises a conductor, a mica tape wrapped to the outside of the conductor, and an insulating layer wrapped to the outside of the mica tape.
3. The fireproof cable for low temperature-resistant signal transmission according to claim 2, wherein the insulating layer is made of a ceramic polyolefin insulating material, and the high temperature-resistant filling layer and the high temperature-resistant inner sheath are both made of a ceramic polyolefin sheath material.
4. The fireproof cable for transmitting signals with low temperature resistance according to claim 1, wherein the electric field shielding layer is a copper braided shielding net.
5. The fireproof cable for low-temperature-resistant signal transmission according to claim 1, wherein the magnetic field shielding layer is a steel braided shielding mesh.
6. The fireproof cable for transmitting signals at low temperature according to claim 1, wherein the outer sheath is made of nitrile rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221242400.XU CN217822169U (en) | 2022-05-23 | 2022-05-23 | Fireproof cable for low-temperature-resistant transmission signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221242400.XU CN217822169U (en) | 2022-05-23 | 2022-05-23 | Fireproof cable for low-temperature-resistant transmission signals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217822169U true CN217822169U (en) | 2022-11-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221242400.XU Active CN217822169U (en) | 2022-05-23 | 2022-05-23 | Fireproof cable for low-temperature-resistant transmission signals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217822169U (en) |
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2022
- 2022-05-23 CN CN202221242400.XU patent/CN217822169U/en active Active
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