CN214377761U - Fire-resistant super explosion-proof three-core cable for petroleum and petrochemical industry - Google Patents
Fire-resistant super explosion-proof three-core cable for petroleum and petrochemical industry Download PDFInfo
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- CN214377761U CN214377761U CN202120442874.8U CN202120442874U CN214377761U CN 214377761 U CN214377761 U CN 214377761U CN 202120442874 U CN202120442874 U CN 202120442874U CN 214377761 U CN214377761 U CN 214377761U
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Abstract
The utility model discloses a fire-resistant super explosion-proof three-core cable for petroleum and petrochemical industry, which comprises an outer protective sleeve, a first explosion-proof shielding layer, an armor layer, an oxygen isolation layer, an inner protective sleeve layer, a second explosion-proof shielding layer, a semi-conducting layer and a plurality of beam cable cores arranged in the semi-conducting layer which are arranged from outside to inside in sequence; a first flame-retardant layer is arranged between the first explosion-proof shielding layer and the armor layer, and a second flame-retardant layer is arranged between the armor layer and the oxygen barrier layer; it is provided with the fire-retardant layer of third between oxygen layer and the inner sheath layer to separate, be provided with the fire-retardant layer of fourth between inner sheath layer and the explosion-proof shielding layer of second, be provided with the fire-retardant layer of fifth between explosion-proof shielding layer of second and the outer protective sheath. The utility model has the advantages that: the structure that this scheme set up can be fine prevent that the sinle silk from taking place in the circuit, catching fire, under the high temperature condition, expend with heat and contract with cold, metal shielding produces the injury to insulation shield.
Description
Technical Field
The invention relates to the technical field of cable manufacturing, in particular to a fire-resistant super explosion-proof three-core cable for petroleum and petrochemical industry.
Background
According to market demands, the safety of the cable in use is widely concerned by people. Particularly, in places where cables are densely laid, fire disasters are easy to cause, and the places all put high requirements on the flame retardant and fire resistant performance of the cables. After a fire disaster occurs to a common cable, normal power supply of a line cannot be guaranteed, so that an elevator, an emergency lighting system, an automatic alarm system, a disaster relief system and the like cannot work normally. The fireproof cable used in the current market has low fireproof performance, can only pass a fireproof test of 90 minutes at the temperature of 800 ℃ plus 750-.
Drawbacks and deficiencies of the background art: after the insulation shielding, the wire core is directly shielded by metal, so that the wire core expands after being heated, the metal wire or the metal belt can damage the insulation, short-circuit current is conducted under the action of the copper belt shielding, the copper belt shielding has small cross section, the copper wire is shielded, and the production speed is low; cabling only adopts common filling materials; only wrapping a ceramic silicon rubber belt or extruding an oxygen-isolating layer can not meet the requirement of a high fire resistance test, and after the fire resistance test, applying pressure breakdown or discharging amount exceeds the standard requirement; the oxygen-isolating layer with the flame-retardant and fire-resistant structure is added only after cabling, so that the transmission of external heat during combustion is difficult to be obstructed, the insulation deformation and yellowing are caused, the discharge is caused, and the requirements of long-time flame and high-temperature environment cannot be met; the cost of the silicon rubber tape wrapping material is high, and the production speed is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects and the insufficiency in the prior art, designing a fire-resistant super explosion-proof three-core cable for petroleum and petrochemical industry.
In order to achieve the technical purpose, the utility model provides a technical scheme is that a fire-resistant super explosion-proof three-core cable for petroleum and petrochemical industry comprises an outer protective sleeve, a first explosion-proof shielding layer, an armor layer, an oxygen isolation layer, an inner protective sleeve layer, a second explosion-proof shielding layer, a semi-conducting layer and a plurality of beam cable cores arranged in the semi-conducting layer which are arranged from outside to inside in sequence; a first flame-retardant layer is arranged between the first explosion-proof shielding layer and the armor layer, and a second flame-retardant layer is arranged between the armor layer and the oxygen barrier layer; it is provided with the fire-retardant layer of third between oxygen layer and the inner sheath layer to separate, be provided with the fire-retardant layer of fourth between inner sheath layer and the explosion-proof shielding layer of second, be provided with the fire-retardant layer of fifth between explosion-proof shielding layer of second and the outer protective sheath.
Preferably, the cable core is provided with a conductor, a conductor shielding layer, a conductor insulating layer, an insulation shielding layer, a semiconductive buffer water-blocking tape and a semiconductive sheath from inside to outside, and the semiconductive layer comprises a semiconductive nylon tape and a semiconductive filling strip arranged in a gap between the cable core and the semiconductive nylon tape.
Preferably, the first flame-retardant layer, the second flame-retardant layer, the third flame-retardant layer, the fourth flame-retardant layer and the fifth flame-retardant layer are all glass fiber tapes with flame-retardant effects.
Preferably, the outer protective sleeve and the inner protective layer are both sheaths made of halogen-free low-smoke flame-retardant polyolefin materials with high flame-retardant property.
Preferably, the first explosion-proof shielding layer and the second explosion-proof shielding layer are both made of copper strips.
Preferably, the oxygen barrier layer is made of ceramic fireproof polyolefin.
In the scheme, the fire-resistant super explosion-proof three-core cable comprises the following technical materials: wrapping a 2.0mm high-temperature buffer tape outside the insulating shielding layer; the wire core is prevented from being damaged by insulation shielding caused by expansion with heat and contraction with cold under the conditions of circuit ignition and high temperature; a ceramic halogen-free low-smoke flame-retardant polyolefin fire-resistant layer is extruded and wrapped in an item manner behind the metal shielding layer, and a mineral paper rope is adopted for filling in cabling and is wrapped with a glass fiber belt; during cabling, three-phase current is combined with a drainage wire together to play a role in conducting short-circuit current, copper wire shielding is avoided, and production efficiency is low; the inner sheath adopts a low-smoke halogen-free flame-retardant polyolefin sheath; then, a ceramic halogen-free low-smoke flame-retardant polyolefin oxygen-insulating layer and a glass fiber tape are extruded and wrapped, and a glass fiber tape is wrapped after steel tape armoring; the outer sheath adopts a low-smoke halogen-free flame-retardant polyolefin sheath.
The working principle and the effect are explained:
a 2.0mm high-temperature buffer belt is wound outside the insulation shield to protect the insulation wire core, so that the metal shield is prevented from damaging the insulation and the insulation shield under the high-temperature condition; the metal shielding layer adopts a copper strip split screen, and a drainage wire is crossed during cabling to play a role in conducting short-circuit current; after the metal shielding, the ceramic halogen-free low-smoke flame-retardant polyolefin fire-resistant layer is extruded in different items, so that the heat-insulating fire-resistant effect is achieved, and the insulated wire core is prevented from being deformed at high temperature; during cabling, mineral paper ropes are used for filling, so that the fireproof and heat-insulating effects are achieved, and the glass fiber belts are wrapped around the cabling, so that the flame-retardant effect is achieved; because the copper strip shielding section is small, the three-phase wire core and the drainage wire are twisted together to form a cable as a grounding wire to conduct short-circuit current; the ceramic halogen-free low-smoke flame-retardant polyolefin oxygen-insulating layer and the glass fiber tape are wrapped before the armor, after the outer protective layer burns, the incrustation speed is high, the incrustation is very hard and compact, the horizontal burning can be self-extinguished without delayed burning, the transmission of external heat to the inside of the cable is powerfully slowed down, the integrity of the oxygen-insulating layer can be better ensured by wrapping the glass fiber tape, and the transmission of heat is better prevented; the inner protective sleeve adopts a halogen-free low-smoke flame-retardant polyolefin sheath to play a role in high flame retardance and heat insulation; the outer protective sleeve adopts an environment-friendly low-smoke halogen-free flame-retardant polyolefin sheath, and plays a role in environment protection and high flame retardance.
The utility model has the advantages that: 1. the utility model relates to a petroleum and petrochemical fire-resistant super explosion-proof three-core cable which is wrapped with a 2.0mm high-temperature buffer belt outside an insulation shielding layer; the wire core is prevented from being damaged by insulation shielding caused by expansion with heat and contraction with cold under the conditions of circuit ignition and high temperature; 2. the metal band is adopted for shielding in terms, so that the production efficiency is improved, and in order to meet the requirement of short-circuit current, a drainage wire is twisted during cabling to conduct the short-circuit current; 3. the extruded ceramic halogen-free low-smoke flame-retardant polyolefin fireproof fire-resistant layer is added on the subentry wire core, so that the transmission of external heat during combustion is blocked, the spread of flame can be better prevented, the transmission of the external heat to the inside of the cable is effectively slowed down, the influence of external high temperature on the insulated wire core is delayed, and the cable can adapt to a severe environment and meet the requirement of super fire resistance and fire resistance compared with a common fireproof cable with a single-layer fire-resistant layer; 4. the ceramic halogen-free low-smoke flame-retardant polyolefin oxygen-insulating layer extruded before the armor has the effects of heat insulation, temperature reduction and incrustation after thermal decomposition, when a large amount of hydrated oxides in the material are heated, water molecules are evaporated, a large amount of heat can be absorbed, the temperature of the cable is reduced, the concentration of oxygen around the cable can be diluted by formed water vapor, flame and heat are prevented from spreading and transferring to the interior of the cable, on-site water pouring can be effectively resisted after the oxygen-insulating layer is incrusted, water is prevented from permeating to an insulating layer, and the normal operation of a circuit is maintained under the condition of fire; 5. the filling structure adopts the mineral paper rope, so that the flame-retardant cable is flame-retardant, has excellent heat-conducting property and is beneficial to heat dissipation of the cable; 6. all the materials are environment-friendly halogen-free low-smoke environment-friendly materials, and have no toxicity after combustion. The heat-insulating fireproof layer of the product has a soft structure and a small bending radius, is easy to install and lay and is convenient to use; 7. the ceramic halogen-free low-smoke flame-retardant polyolefin sheath material has the advantages of mature process, lower unit price compared with a ceramic fireproof fire-resistant composite belt, obvious market advantage, high extrusion molding speed, easy installation and laying and convenient use.
Drawings
Fig. 1 is the utility model discloses a petroleum and petrochemical industry is with fire-resistant super explosion-proof three-core cable's schematic structure.
The notation in the figure is: 1. Conductor, 2, conductor shielding layer, 3, conductor insulating layer, 4, insulating shielding layer, 5, semiconduction buffering water-blocking tape, 6, semiconduction sheath, 7, semiconduction filler strip, 8, semiconduction nylon tape, 9, second explosion-proof shielding layer, 10, first fire-retardant layer, 11, inner protective sleeve, 12, second fire-retardant layer, 13, oxygen barrier, 14, third fire-retardant layer, 15, armor, 16, fourth fire-retardant layer, 17, first explosion-proof shielding layer, 18, fifth fire-retardant layer, 19, outer protective sleeve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is described in detail with reference to the accompanying drawings and examples, it should be understood that the specific embodiment described herein is only a preferred embodiment of the present invention, and is only used for explaining the present invention, and does not limit the protection scope of the present invention, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, a schematic structural diagram of a fire-resistant super explosion-proof three-core cable for petroleum and petrochemical industry includes an outer protective sleeve 19, a first explosion-proof shielding layer 17, an armor layer 15, an oxygen barrier layer 13, an inner protective sleeve layer 11, a second explosion-proof shielding layer 9, a semi-conductive layer and a plurality of cable cores arranged in the semi-conductive layer, which are sequentially arranged from outside to inside; a first flame-retardant layer 10 is arranged between the first explosion-proof shielding layer and the armor layer, and a second flame-retardant layer 12 is arranged between the armor layer and the oxygen barrier layer; a third flame-retardant layer 14 is arranged between the oxygen-isolating layer and the inner sheath layer, a fourth flame-retardant layer 16 is arranged between the inner sheath layer and the second explosion-proof shielding layer, and a fifth flame-retardant layer 18 is arranged between the second explosion-proof shielding layer and the outer sheath; the cable core is provided with a conductor 1, a conductor shielding layer 2, a conductor insulating layer 3, an insulating shielding layer 4, a semi-conductive buffer water-blocking tape 5 and a semi-conductive sheath 6 from inside to outside, and the semi-conductive layer comprises a semi-conductive nylon tape 8 and a semi-conductive filling strip 7 arranged in a gap between the cable core and the semi-conductive nylon tape; the first flame-retardant layer, the second flame-retardant layer, the third flame-retardant layer, the fourth flame-retardant layer and the fifth flame-retardant layer are all glass fiber tapes with flame-retardant effects; the outer protective sleeve and the inner protective layer are both sheaths made of halogen-free low-smoke flame-retardant polyolefin materials with high flame-retardant property; the first explosion-proof shielding layer and the second explosion-proof shielding layer are both explosion-proof shielding layers made of copper strips; the oxygen-isolating layer is made of ceramic fireproof polyolefin.
In this embodiment, the fire-resistant super explosion-proof three-core cable is made of the following technical materials: wrapping a 2.0mm high-temperature buffer tape outside the insulating shielding layer; the wire core is prevented from being damaged by insulation shielding caused by expansion with heat and contraction with cold under the conditions of circuit ignition and high temperature; a ceramic halogen-free low-smoke flame-retardant polyolefin fire-resistant layer is extruded and wrapped in an item manner behind the metal shielding layer, and a mineral paper rope is adopted for filling in cabling and is wrapped with a glass fiber belt; during cabling, three-phase current is combined with a drainage wire together to play a role in conducting short-circuit current, copper wire shielding is avoided, and production efficiency is low; the inner sheath adopts a low-smoke halogen-free flame-retardant polyolefin sheath; then, a ceramic halogen-free low-smoke flame-retardant polyolefin oxygen-insulating layer and a glass fiber tape are extruded and wrapped, and a glass fiber tape is wrapped after steel tape armoring; the outer sheath adopts a low-smoke halogen-free flame-retardant polyolefin sheath.
The working principle and the effect are explained as follows:
in the embodiment, a layer of 2.0mm high-temperature buffer tape is wound outside the insulation shield to protect the insulation wire core, so that the metal shield is prevented from damaging the insulation and the insulation shield under the high-temperature condition; the metal shielding layer adopts a copper strip split screen, and a drainage wire is crossed during cabling to play a role in conducting short-circuit current; after the metal shielding, the ceramic halogen-free low-smoke flame-retardant polyolefin fire-resistant layer is extruded in different items, so that the heat-insulating fire-resistant effect is achieved, and the insulated wire core is prevented from being deformed at high temperature; during cabling, mineral paper ropes are used for filling, so that the fireproof and heat-insulating effects are achieved, and the glass fiber belts are wrapped around the cabling, so that the flame-retardant effect is achieved; because the copper strip shielding section is small, the three-phase wire core and the drainage wire are twisted together to form a cable as a grounding wire to conduct short-circuit current; the ceramic halogen-free low-smoke flame-retardant polyolefin oxygen-insulating layer and the glass fiber tape are wrapped before the armor, after the outer protective layer burns, the incrustation speed is high, the incrustation is very hard and compact, the horizontal burning can be self-extinguished without delayed burning, the transmission of external heat to the inside of the cable is powerfully slowed down, the integrity of the oxygen-insulating layer can be better ensured by wrapping the glass fiber tape, and the transmission of heat is better prevented; the inner protective sleeve adopts a halogen-free low-smoke flame-retardant polyolefin sheath to play a role in high flame retardance and heat insulation; the outer protective sleeve adopts an environment-friendly low-smoke halogen-free flame-retardant polyolefin sheath, and plays a role in environment protection and high flame retardance.
The aforesaid embodiment does the utility model relates to a petroleum and petrochemical industry is with preferred embodiment of fire-resistant super explosion-proof three-core cable, not with this injeciton the utility model discloses a concrete implementation scope, the utility model discloses a scope includes and is not limited to this embodiment, and the all equivalent changes that do according to the utility model discloses a shape, structure are all in the protection scope of the utility model.
Claims (6)
1. The utility model provides a petroleum and petrochemical industry is with fire-resistant super explosion-proof three-core cable which characterized in that: the cable comprises an outer protective sleeve, a first explosion-proof shielding layer, an armor layer, an oxygen barrier layer, an inner protective sleeve layer, a second explosion-proof shielding layer, a semi-conducting layer and a plurality of cable cores arranged in the semi-conducting layer, wherein the outer protective sleeve, the first explosion-proof shielding layer, the armor layer, the oxygen barrier layer, the inner protective sleeve layer, the second explosion-proof shielding layer, the semi-conducting layer and the plurality of cable cores are sequentially arranged from outside to inside; a first flame-retardant layer is arranged between the first explosion-proof shielding layer and the armor layer, and a second flame-retardant layer is arranged between the armor layer and the oxygen barrier layer; it is provided with the fire-retardant layer of third between oxygen layer and the inner sheath layer to separate, be provided with the fire-retardant layer of fourth between inner sheath layer and the explosion-proof shielding layer of second, be provided with the fire-retardant layer of fifth between explosion-proof shielding layer of second and the outer protective sheath.
2. The fire-resistant super explosion-proof three-core cable for petroleum and petrochemical industry according to claim 1, wherein: the cable core is provided with a conductor, a conductor shielding layer, a conductor insulating layer, an insulating shielding layer, a semi-conductive buffer water-blocking tape and a semi-conductive sheath from inside to outside, and the semi-conductive layer comprises a semi-conductive nylon tape and a semi-conductive filling strip arranged in a gap between the cable core and the semi-conductive nylon tape.
3. The fire-resistant super explosion-proof three-core cable for petroleum and petrochemical industry according to claim 1 or 2, wherein: the first flame-retardant layer, the second flame-retardant layer, the third flame-retardant layer, the fourth flame-retardant layer and the fifth flame-retardant layer are all glass fiber belts with flame-retardant effects.
4. The fire-resistant super explosion-proof three-core cable for petroleum and petrochemical industry according to claim 1 or 2, wherein: the outer protective sleeve and the inner protective layer are both sheaths made of halogen-free low-smoke flame-retardant polyolefin materials with high flame-retardant property.
5. The fire-resistant super explosion-proof three-core cable for petroleum and petrochemical industry according to claim 1 or 2, wherein: the first explosion-proof shielding layer and the second explosion-proof shielding layer are both explosion-proof shielding layers made of copper strips.
6. The fire-resistant super explosion-proof three-core cable for petroleum and petrochemical industry according to claim 1 or 2, wherein: the oxygen-isolating layer is made of ceramic fireproof polyolefin.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120442874.8U CN214377761U (en) | 2021-03-01 | 2021-03-01 | Fire-resistant super explosion-proof three-core cable for petroleum and petrochemical industry |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120442874.8U CN214377761U (en) | 2021-03-01 | 2021-03-01 | Fire-resistant super explosion-proof three-core cable for petroleum and petrochemical industry |
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| CN214377761U true CN214377761U (en) | 2021-10-08 |
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| CN202120442874.8U Active CN214377761U (en) | 2021-03-01 | 2021-03-01 | Fire-resistant super explosion-proof three-core cable for petroleum and petrochemical industry |
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| CN (1) | CN214377761U (en) |
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- 2021-03-01 CN CN202120442874.8U patent/CN214377761U/en active Active
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