CN209924174U - Prevent to produce hot wall system of vortex and compound intumescent fire prevention panel thereof - Google Patents
Prevent to produce hot wall system of vortex and compound intumescent fire prevention panel thereof Download PDFInfo
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- CN209924174U CN209924174U CN201822248701.3U CN201822248701U CN209924174U CN 209924174 U CN209924174 U CN 209924174U CN 201822248701 U CN201822248701 U CN 201822248701U CN 209924174 U CN209924174 U CN 209924174U
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Abstract
The utility model discloses a firewall system for preventing vortex and a composite expansion type fireproof plate thereof, which comprises a single-core power cable, a first bracket, a second bracket, a first fireproof wall, a second fireproof wall and a composite expansion type fireproof plate; the first support is arranged on the inner side of the first firewall, the second support is arranged on the inner side of the second firewall, and single-core power cables are arranged on the first support and the second support; the composite expansion type fireproof plate comprises a composite fireproof plate body, wherein the composite fireproof plate body is provided with a cable through hole; the composite fireproof plate body comprises a stainless steel plate and a fireproof plate piece, wherein the stainless steel plate is arranged on the outer side of the fireproof plate piece; on one hand, the integrity of the fire-proof plugging system is kept under a fire-fighting high-pressure water gun, on the other hand, the eddy current loss is reduced, the eddy current loss caused by the fact that a large current of a single-core power cable flows through a common steel plate material and an iron plate material is avoided, and the service life of the single-core power cable is prolonged.
Description
Technical Field
The utility model belongs to the technical field of the fire proof board material and specifically relates to indicate a prevent hot wall system and compound intumescent fire proof board material that prevents to produce the vortex.
Background
Single-core power cables (hereinafter referred to as cables) are usually laid in large numbers as incoming and outgoing cables in substations with a voltage class of 35kV to 110 kV. When alternating current flows through the cable, an alternating magnetic field which is perpendicular to the conducting wire and distributed in a circular shape and takes the conducting wire as a circle center is generated around the cable. When the cable passes through a metal ring made of steel or iron with common magnetic conductivity, the magnetic conductivity of the steel or iron material is far higher than that of air, the distribution of the magnetic field around the metal changes, the magnetic field forming a closed loop along the inside of the fireproof plate taking the magnetic conductive metal material as a support is strongest, namely the magnetic flux density of the fireproof plate is far higher than that in the surrounding air, and a circle of circular flow called eddy current is induced in the metal by the alternating magnetic field.
The magnitude of the generated eddy current is mainly determined by the change rate of the magnetic flux inside the metal plate, and the magnitude of the change rate is also determined by the magnitude of the magnetic flux, namely the magnetic permeability of the metal material. Because the resistance of the cable core copper conductor is very small, the eddy current is very large when the cable passes through a common magnetic conductive metal material. Due to the heat effect of the current, the eddy current can heat the conductor of the cable and consume energy, so that the loss of the cable is caused, the whole cable generates heat, the temperature of the cable body rises, and the insulation material is aged more quickly, so that the service life of the cable is shortened, and even the cable is damaged.
According to national and industrial standards, a fire wall should be arranged in a channel for laying a power cable to prevent the cable from delaying combustion caused by explosion after the cable is in fault, but in the actual application or transportation process, after the existing fire-proof plate is subjected to certain extrusion, damp or accidental collision, the original state cannot be maintained or damage is caused due to insufficient toughness, and the normal use is influenced.
Therefore, in the present application, the applicant has elaborately studied a fire-proof wall system for preventing generation of eddy current and a composite expansion type fire-proof plate thereof to avoid generation of eddy current by a single core power cable and to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a fire-proof wall system and a composite expansion type fire-proof plate thereof, which can prevent the generation of eddy current, and in one aspect, ensure the integrity of the fire-proof blocking system under the fire-fighting high-pressure water gun, and in another aspect, reduce the eddy current loss, thereby avoiding the eddy current loss caused by the flow of the large current of the single-core power cable in the common steel and iron plate materials, and prolonging the service life of the single-core power cable.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a composite expansion type fireproof plate for preventing generation of eddy current comprises a composite fireproof plate body, wherein the composite fireproof plate body is provided with a cable through hole for a single-core power cable to pass through; the composite fireproof plate body comprises a stainless steel plate and a fireproof plate piece, wherein the stainless steel plate is arranged on the outer side of the fireproof plate piece.
Preferably, the stainless steel plate is bonded to the outside of the refractory plate.
Preferably, the fire-resistant plate is an organic or inorganic composite elastic fire-resistant plate.
Preferably, the inner side of the refractory slab is provided with a hexagonal stainless steel wire mesh.
Preferably, the hexagonal stainless steel wire net is covered with aluminum foil on the inner side.
A firewall system for preventing eddy current generation comprises a single-core power cable, a first support, a second support, a first firewall, a second firewall and a composite expansion type fireproof plate, wherein the composite expansion type fireproof plate is the composite expansion type fireproof plate for preventing eddy current generation;
the fireproof wall comprises a first fireproof wall, a second fireproof wall, a first support, a second support, a single-core power cable, a composite expansion type fireproof plate, a first support and a second support, wherein the first support is arranged on the inner side of the first fireproof wall, the second support is arranged on the inner side of the second fireproof wall, the single-core power cable is arranged on the first support and the second support, a cable channel is formed between the first fireproof wall and the second fireproof wall, the single-core power cable penetrates through a cable through hole, and the single-core power cable, the composite expansion type fireproof plate, the first.
As a preferred scheme, after the single-core power cable penetrates through the cable through hole, the periphery of the composite fireproof plate body corresponding to the cable through hole is provided with non-solidified fireproof mud.
As a preferred scheme, still including fixed angle steel, compound fire prevention panel body passes through fixed angle steel respectively with first hot wall and the hot wall fixed connection of second.
Preferably, a fire retardant belt is bound on the periphery of the single-core power cable, and the non-solidified fireproof mud is sealed and arranged on the periphery of the fire retardant belt.
Preferably, the single-core power cable extends through the composite fireproof plate bodies along the axial direction, and the adjacent composite fireproof plate bodies are arranged at equal intervals.
Compared with the prior art, the utility model has obvious advantages and beneficial effects, particularly, it mainly makes the bearing surface through the stainless steel plate that sets up in the fire-resistant slab outside, on the one hand, ensures that the fire prevention plugging system keeps the integrality of system under the fire-fighting high-pressure squirt, on the other hand, reduces the eddy current loss, then avoids flowing the eddy current loss that produces in ordinary steel, iron plate material because of the heavy current of single core power cable, prolongs the life of single core power cable;
secondly, the hexagonal stainless steel wire mesh on the inner side of the fireproof plate is structurally reinforced and the surface of the fireproof plate is covered by the aluminum foil, so that the composite fireproof plate body can obtain good toughness to keep an original state and avoid damage after being extruded or collided accidentally to a certain extent in the actual application or transportation process, and the integral durability and wide applicability are improved;
and, the whole system design is ingenious reasonable, and the back-fire relief performance is better, and especially, single core power cable combines closely with between compound fire prevention panel body, fixed angle steel, non-solidifiability fire prevention mud and the back-fire relief area respectively, and the fastness is better, has certain dampproofing, shock resistance and anti-vibration ability.
To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is a schematic perspective view of a composite fireproof board according to a preferred embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of the composite fireproof board according to the preferred embodiment of the present invention;
FIG. 3 is a first partial cross-sectional view of the firewall system of the preferred embodiment of the invention (primarily showing a single core power cable passing through the composite fire barrier body);
FIG. 4 is an enlarged view of a portion A of FIG. 3;
fig. 5 is a second partial cross-sectional view of the firewall system of the preferred embodiment of the invention (shown primarily as a single core power cable passing through the composite fire panel body).
The attached drawings indicate the following:
10. single core power cable 11, fire retardant belt
12. Non-solidified fireproof mud
20. Composite fireproof plate body 201 and cable through hole
21. Stainless steel plate 22, refractory plate
23. Hexagonal stainless steel wire net 24, aluminium foil
31. First bracket 32, second bracket
33. First firewall 34 and second firewall
35. Fixed angle steel 36, cable channel.
Detailed Description
Referring to fig. 1 to 5, which show a specific structure of a preferred embodiment of the present invention, a composite expansion type single core cable system for preventing generation of eddy current includes a single core power cable 10, a first bracket 31, a second bracket 32, a first firewall 33, a second firewall 34, a fixing angle steel 35, and a composite expansion type fireproof plate, where the composite expansion type fireproof plate is the composite expansion type fireproof plate for preventing generation of eddy current, where:
the first support 31 is installed on the inner side of a first firewall 33, the second support 32 is installed on the inner side of a second firewall 34, single-core power cables 10 are installed on the first support 31 and the second support 32, a cable channel 36 is formed between the first firewall 33 and the second firewall 34, the single-core power cables 10 penetrate through the following cable through holes 201, and the single-core power cables 10, the composite expansion type fireproof plate, the first support 31 and the second support 32 are all fixedly arranged above the cable channel 36.
The composite fireproof plate body 20 is fixedly connected with the first fireproof wall 33 and the second fireproof wall 34 through fixed angle steel 35 respectively, preferably, the fixed angle steel 35 is fixed with the first fireproof wall 33 and the second fireproof wall 34 through expansion bolts, and the fixed angle steel 35 is stainless steel fixed angle steel; fire retardant belts 11 are bound on the peripheries of the single-core power cables 10, and non-solidified fire retardant mud 12 is hermetically arranged on the peripheries of the fire retardant belts 11.
The composite expansion type fireproof plate comprises a composite fireproof plate body 20, wherein the composite fireproof plate body 20 is provided with a cable through hole 201 for the single-core power cable 10 to pass through; the composite fireproof plate body 20 comprises a stainless steel plate 21 and a fireproof plate 22, wherein the stainless steel plate 21 is made of SUS304 stainless steel, the stainless steel plate 21 is arranged on the outer side of the fireproof plate 22, and preferably, the stainless steel plate 21 is bonded on the outer side of the fireproof plate 22; the composite expansion type fireproof plate with the stainless steel plate 21 as the supporting surface can ensure that the fireproof sealing system keeps the integrity of the system under the high-pressure fire-fighting water gun. This is particularly important for the safety of fire fighters.
The eddy current loss can be effectively reduced by using the SUS304 stainless steel plate, the single-core power cable 10 is usually three-phase or single-phase, the magnetic field with the vector sum of zero can be generated only when each item in the three-phase current is in a balanced state, and the total current vector sum of the three-phase current is zero in the condition, when the three-phase alternating current is in a balanced state, the stainless steel plate 21 passes through the stainless steel plate 21, the variable magnetic field can not be generated on the magnetic field, and the eddy current can not be generated. Therefore, the non-magnetic stainless steel plate 21 can avoid eddy current loss caused by the flow of large current of the core of the single-core power cable 10 in common steel and iron plate materials.
The fire-resistant plate 22 is an organic or inorganic composite elastic fire-resistant plate 22. The elastic fire-resistant sheet 22 has a fire-resistant intumescent substance so that the composite intumescent fire-resistant sheet is exposed to a fire, begins to expand in volume up to 8 to 10 times its original size, and forms a high-strength carbonized layer to prevent heat conduction.
The inner side of the refractory slab 22 is provided with a hexagonal stainless steel mesh 23. The hexagonal stainless steel wire mesh 23 is covered with an aluminum foil 24 on the inner side. In the actual application or transportation process, the composite intumescent fireproof plate is often subjected to certain extrusion or accidental collision. The hexagonal stainless steel wire mesh 23 can provide good toughness to keep the original state of the composite expansion type fireproof board and avoid the breakage, and the durability and wide applicability of the composite expansion type fireproof board are improved.
The single core power cable 10 extends through a plurality of composite fireproof sheet bodies 20 along the axial direction, and adjacent composite fireproof sheet bodies 20 are arranged at equal intervals (preferably, at a distance of 100 m). After the single-core power cable 10 passes through the cable through hole 201, the periphery of the composite fireproof plate body 20 corresponding to the cable through hole 201 is provided with non-solidified fireproof mud 12.
The utility model discloses a design focus lies in: the stainless steel plate arranged on the outer side of the fire-resistant plate is used as a supporting surface, so that on one hand, the integrity of a fire-proof plugging system is kept under a fire-fighting high-pressure water gun, on the other hand, the eddy current loss is reduced, the eddy current loss generated by the flow of a large current of a single-core power cable in common steel and iron plate materials is avoided, and the service life of the single-core power cable is prolonged;
secondly, the hexagonal stainless steel wire mesh on the inner side of the fireproof plate is structurally reinforced and the surface of the fireproof plate is covered by the aluminum foil, so that the composite fireproof plate body can obtain good toughness and keep an original state after being extruded to a certain degree or collided unintentionally in the actual application or transportation process. Thereby improving the overall durability and wide applicability;
and, the whole system design is ingenious reasonable, and the back-fire relief performance is better, and especially, single core power cable combines closely with between compound fire prevention panel body, fixed angle steel, non-solidifiability fire prevention mud and the back-fire relief area respectively, and the fastness is better, has certain dampproofing, shock resistance and anti-vibration ability.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a prevent to produce compound intumescent fire prevention panel of vortex which characterized in that: the fireproof composite plate comprises a composite fireproof plate body, wherein the composite fireproof plate body is provided with a cable through hole for a single-core power cable to pass through; the composite fireproof plate body comprises a stainless steel plate and a fireproof plate piece, wherein the stainless steel plate is arranged on the outer side of the fireproof plate piece.
2. The intumescent, vortex-preventing composite sheet material as claimed in claim 1, wherein: the stainless steel plate is bonded to the outer side of the refractory plate.
3. The intumescent, vortex-preventing composite sheet material as claimed in claim 1, wherein: the fire-resistant plate is an organic or inorganic composite elastic fire-resistant plate.
4. The intumescent, vortex-preventing composite sheet material as claimed in claim 1, wherein: and a hexagonal stainless steel wire mesh is arranged on the inner side of the refractory slab.
5. The intumescent, vortex-preventing composite sheet material as claimed in claim 4, wherein: the inner side of the hexagonal stainless steel wire net is covered with an aluminum foil.
6. A fire wall system for preventing generation of eddy current, characterized in that: the composite expansion type fireproof plate comprises a single-core power cable, a first bracket, a second bracket, a first fireproof wall, a second fireproof wall and a composite expansion type fireproof plate, wherein the composite expansion type fireproof plate is the composite expansion type fireproof plate for preventing the generation of eddy current according to any one of claims 1 to 5;
the fireproof wall comprises a first fireproof wall, a second fireproof wall, a first support, a second support, a single-core power cable, a composite expansion type fireproof plate, a first support and a second support, wherein the first support is arranged on the inner side of the first fireproof wall, the second support is arranged on the inner side of the second fireproof wall, the single-core power cable is arranged on the first support and the second support, a cable channel is formed between the first fireproof wall and the second fireproof wall, the single-core power cable penetrates through a cable through hole, and the single-core power cable, the composite expansion type fireproof plate, the.
7. The fire wall system for preventing generation of vortex flow according to claim 6, wherein: after the single-core power cable penetrates through the cable through hole, non-solidified fireproof mud is arranged on the periphery of the composite fireproof plate body corresponding to the cable through hole.
8. The fire wall system for preventing generation of vortex flow according to claim 6, wherein: still including fixed angle steel, compound fire prevention panel body passes through fixed angle steel and prevents hot wall fixed connection with first hot wall and second respectively.
9. The fire wall system for preventing generation of vortex flow according to claim 7, wherein: fire retardant belt is bound on the periphery of the single-core power cable, and the non-solidified fireproof mud is hermetically arranged on the periphery of the fire retardant belt.
10. The fire wall system for preventing generation of vortex flow according to claim 6, wherein: single core power cable extends along the axial and passes a plurality of compound fire proof board bodies, and the equidistance sets up between the adjacent compound fire proof board body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822248701.3U CN209924174U (en) | 2018-12-29 | 2018-12-29 | Prevent to produce hot wall system of vortex and compound intumescent fire prevention panel thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822248701.3U CN209924174U (en) | 2018-12-29 | 2018-12-29 | Prevent to produce hot wall system of vortex and compound intumescent fire prevention panel thereof |
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| CN209924174U true CN209924174U (en) | 2020-01-10 |
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| CN201822248701.3U Active CN209924174U (en) | 2018-12-29 | 2018-12-29 | Prevent to produce hot wall system of vortex and compound intumescent fire prevention panel thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023000250A1 (en) * | 2021-07-22 | 2023-01-26 | 3M创新有限公司 | Fireproof composite board and fireproof structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023000250A1 (en) * | 2021-07-22 | 2023-01-26 | 3M创新有限公司 | Fireproof composite board and fireproof structure |
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