CN220539119U - Prevent fire prevention parcel structure of exhaust pipe - Google Patents
Prevent fire prevention parcel structure of exhaust pipe Download PDFInfo
- Publication number
- CN220539119U CN220539119U CN202321667425.9U CN202321667425U CN220539119U CN 220539119 U CN220539119 U CN 220539119U CN 202321667425 U CN202321667425 U CN 202321667425U CN 220539119 U CN220539119 U CN 220539119U
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- Prior art keywords
- fire
- smoke exhaust
- smoke
- exhaust pipeline
- cavity
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- 230000002265 prevention Effects 0.000 title claims abstract description 19
- 239000000779 smoke Substances 0.000 claims abstract description 91
- 238000009413 insulation Methods 0.000 claims description 24
- 239000000835 fiber Substances 0.000 claims description 17
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 14
- 230000009970 fire resistant effect Effects 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 229920000742 Cotton Polymers 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 8
- OLZDXDPSDUSGIS-UHFFFAOYSA-N sulfinylmagnesium Chemical compound [Mg].S=O OLZDXDPSDUSGIS-UHFFFAOYSA-N 0.000 claims description 5
- 238000001879 gelation Methods 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims 3
- 239000000463 material Substances 0.000 abstract description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 6
- 229910001335 Galvanized steel Inorganic materials 0.000 abstract description 3
- 230000000739 chaotic effect Effects 0.000 abstract description 3
- 239000008397 galvanized steel Substances 0.000 abstract description 3
- 229910052742 iron Inorganic materials 0.000 abstract description 3
- 239000011490 mineral wool Substances 0.000 abstract description 3
- 230000006378 damage Effects 0.000 description 13
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 238000005034 decoration Methods 0.000 description 6
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 5
- 239000003063 flame retardant Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 229910052736 halogen Inorganic materials 0.000 description 4
- 150000002367 halogens Chemical class 0.000 description 4
- 230000002427 irreversible effect Effects 0.000 description 4
- 239000000395 magnesium oxide Substances 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 206010033799 Paralysis Diseases 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003517 fume Substances 0.000 description 3
- 239000002440 industrial waste Substances 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 3
- 235000019341 magnesium sulphate Nutrition 0.000 description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 3
- 239000003607 modifier Substances 0.000 description 3
- 210000002345 respiratory system Anatomy 0.000 description 3
- 241000208125 Nicotiana Species 0.000 description 2
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 231100000956 nontoxicity Toxicity 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000000241 respiratory effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910052845 zircon Inorganic materials 0.000 description 2
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000002742 anti-folding effect Effects 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000703 high-speed centrifugation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
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- Thermal Insulation (AREA)
Abstract
The utility model belongs to the technical field of smoke exhaust pipelines, in particular to a fireproof wrapping structure of a smoke exhaust pipeline, which comprises a smoke exhaust pipeline body; flanges are fixedly connected to the side walls of the two ends of the smoke exhaust pipeline body; a first cavity is formed in the smoke exhaust pipeline body; the side walls around the first cavity are respectively provided with a fire-proof layer, a heat-insulating layer and a fire-proof layer from outside to inside; in order to solve the fire prevention parcel of preventing smoke exhaust duct generally adopts iron sheet or galvanized steel pipe material to add the combination of rock wool and PLASTIC LAMINATED, in concrete use, there is heavy installation time and manpower to and not pleasing to the eye inadequately, and fire behavior subalternation shortcoming, prevent smoke exhaust tuber pipe normal operating in unable guarantee conflagration provides good escape environment for the crowd, and can lead to conflagration environment to be more chaotic because of preventing smoke exhaust tuber pipe dropping in the conflagration, directly causes casualties, also provides the difficult problem for fire rescue.
Description
Technical Field
The utility model belongs to the technical field of smoke exhaust pipelines, and particularly relates to a fireproof wrapping structure of a smoke exhaust pipeline.
Background
The smoke prevention and exhaust air pipe is fire-fighting equipment necessary in building design, plays a role of exhausting indoor smoke dust to the outside through the exhaust fan, plays an important role in fire disaster, and is required to exhaust the dense smoke in the fire disaster out of the outside through the smoke prevention and exhaust air pipe, so that people can be prevented from sucking harmful gas in the dense smoke into the respiratory tract, and the time for people to escape is provided for fire rescue, the possibility of people to escape and be rescued in the fire disaster is improved, the fireproof effect of the smoke prevention and exhaust air pipe is extremely important, and serious loss of lives and properties of people caused by the damage of the smoke prevention and exhaust air pipe in the fire disaster is avoided.
One chinese patent with patent number CN217461324U discloses a fire-proof wrapping device for smoke-proof pipeline, including galvanized air pipe, galvanized air pipe outer wall parcel has fire-proof coiled material, fire-proof coiled material outer wall parcel has corrosion-resistant pad, fire-proof coiled material outer wall nestification has fixed frame, fixed frame transverse distribution is at fire-proof coiled material outer wall, fire-proof coiled material is inside including oxidation-resistant film, thin aluminum plate, heat-proof pad, asbestos cloth and high temperature resistant pad, selects effective simple fire-proof parcel measure, provides a set of reliable, the fire-proof parcel method that has good benefit for large-scale complicated public building, and its research result is directly applied to guide engineering design, construction, for improving system efficiency, reducing to the surrounding environment influence provides technical support.
In the prior art, the fireproof package of the smoke prevention and exhaust pipeline generally adopts iron sheets or galvanized steel pipe materials and rock wool and fireproof plates in combination, and in specific use, the defects of time and labor consumption, poor fireproof performance and the like due to heavy weight installation are overcome, normal operation of the smoke prevention and exhaust pipeline in a fire disaster cannot be guaranteed, a good escape environment is provided for people groups, the fire disaster environment is more chaotic due to falling of the smoke prevention and exhaust pipeline in the fire disaster, casualties are directly caused, and difficulty is provided for fire rescue.
Disclosure of Invention
In order to make up the defects of the prior art, the fireproof package of the smoke prevention and exhaust pipeline is generally made of iron sheets or galvanized steel pipe materials and is combined with rock wool and fireproof plates, in specific use, the defects of time and labor consumption, poor fireproof performance and the like due to heavy installation exist, normal operation of the smoke prevention and exhaust air pipe in a fire disaster cannot be guaranteed, good escape environment is provided for people groups, the fire disaster environment is more chaotic due to the fact that the smoke prevention and exhaust air pipe falls down in the fire disaster, casualties are directly caused, and the problem of difficulty is also provided for fire rescue.
The technical scheme adopted for solving the technical problems is as follows: the utility model relates to a fireproof wrapping structure of a smoke exhaust pipeline, which comprises a smoke exhaust pipeline body; flanges are fixedly connected to the side walls of the two ends of the smoke exhaust pipeline body; a first cavity is formed in the smoke exhaust pipeline body; the side walls around the first cavity are respectively provided with a fire-proof layer, a heat-insulating layer and a fire-proof layer from outside to inside; through setting up of fire barrier, insulating layer and flame retardant coating, can make the smoke exhaust pipeline body of preventing discharging fume can bear for a longer time and not damage in the conflagration, avoid because of the tobacco pipe damages and lead to the system of discharging fume to take place paralysis, and then lead to in the place thick smoke to scatter around, by being inhaled people's respiratory, cause irreversible injury to the human body, provide more powerful condition and time for conflagration rescue, personnel flee for one's life.
Preferably, aluminum silicate ceramic fiber needled silk-throwing cotton is arranged in the fire-resistant layer; by setting up the aluminum silicate ceramic fiber needling silk-throwing cotton, the heat conductivity can be reduced, so that the smoke tube can bear longer time in strong fire, and the time for providing rescue service for people to be evacuated is increased.
Preferably, an aluminum silicate fiber felt is arranged in the heat insulation layer; the aluminum silicate fiber felt can make the smoke tube more resistant to high temperature, has low heat conductivity coefficient, and plays a role in heat insulation and sound insulation for the smoke tube.
Preferably, the refractory layer is filled with magnesium oxysulfide for gelation; the magnesia sulfate cementing material is light in weight, high in strength, green and environment-friendly, has the characteristics of fire resistance, folding resistance, earthquake resistance, heat insulation, sound insulation, no toxicity, light weight, no halogen return, no frosting, water resistance, moisture resistance and the like, and is very in line with the materials of the smoke tube, so that the smoke tube has the practicability and the fire resistance.
Preferably, a second cavity is formed inside the first cavity through the heat insulation layer and the refractory layer; by setting up the second cavity, the interior of the smoke exhaust pipeline can form a hollow structure, and the heat conduction speed is reduced.
Preferably, the smoke exhaust pipeline body is made of color steel; the color steel is used for setting up the smoke exhaust pipe body, so that the weight of the smoke exhaust pipe can be reduced, the color steel has good heat insulation performance, and the surface of the smoke exhaust pipe body has the advantages of corrosion resistance, flexible and quick installation and bright color. The surface of the smoke exhaust pipe is not required to be additionally decorated, the decoration requirement of public places is met, the smoke exhaust pipe is generally exposed, and the decoration cost can be reduced.
The beneficial effects of the utility model are as follows:
1. according to the fireproof wrapping structure of the smoke prevention and exhaust pipeline, through the arrangement of the fire isolation layer, the heat insulation layer and the fireproof layer, the smoke prevention and exhaust pipeline body can bear for a longer time in a fire disaster without damage, and the phenomenon that a smoke exhaust system is paralyzed due to the damage of the smoke pipe is avoided, so that thick smoke in a place is scattered, is sucked into a respiratory system of a person, causes irreversible injury to the human body, and provides more powerful conditions and time for fire rescue and personnel escape.
2. The fireproof wrapping structure of the smoke prevention pipeline is formed by mixing magnesium oxide serving as a main raw material, magnesium sulfate solution, a crystal conversion agent, a modifier, plant fibers, industrial waste residues and the like, and the material is light, high in strength, green and environment-friendly, has the characteristics of being fireproof, fire-resistant, fracture-resistant, shock-resistant, heat-insulating, sound-insulating, nontoxic, light in weight, free of halogen return and frosting, waterproof and dampproof, and the like, is quite in line with the materials of a smoke pipe, and enables the smoke pipe to be more practical and fireproof.
Drawings
The utility model is further described below with reference to the accompanying drawings.
FIG. 1 is a perspective view of the present utility model;
FIG. 2 is a front cross-sectional view of the present utility model;
FIG. 3 is an enlarged view at A in FIG. 2;
FIG. 4 is a top cross-sectional view of the present utility model;
FIG. 5 is an enlarged view at B in FIG. 4;
in the figure: 1. a smoke exhaust duct body; 2. a flange; 3. a first cavity; 4. a fire barrier; 5. a thermal insulation layer; 6. a refractory layer; 7. a second cavity.
Detailed Description
The utility model is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.
As shown in fig. 1 to 5, a fire-proof wrapping structure of a smoke-proof pipe according to an embodiment of the present utility model includes a smoke-proof pipe body 1; flanges 2 are fixedly connected to the side walls of the two ends of the smoke exhaust pipeline body 1; a first cavity 3 is formed in the smoke exhaust pipeline body 1; the side walls around the first cavity 3 are respectively provided with a fire-proof layer 4, a heat-insulating layer 5 and a fire-proof layer 6 from outside to inside; during operation, through setting up of fire barrier 4, insulating layer 5 and flame retardant coating 6, can make prevent smoke exhaust pipeline body 1 can bear for a longer time and not damage in the conflagration, avoid because of the tobacco pipe damages and lead to the system of discharging fume to take place paralysis, and then lead to in the place dense smoke to scatter, is inhaled people's respiratory, causes irreversible injury to the human body, provides more powerful condition and time for fire rescue, personnel flee.
Aluminum silicate ceramic fiber needled silk-throwing cotton is arranged in the fire-resistant layer 4; during operation, the aluminum silicate ceramic fiber needling silk-throwing cotton is formed by taking alumina powder, silicon dioxide, zircon sand and the like as raw materials, melting through resistance and throwing silk in a high-speed centrifugation way, and the setting of the aluminum silicate ceramic fiber needling silk-throwing cotton can reduce the heat conductivity, so that the smoke tube can bear longer time in strong fire, and the time is prolonged for providing rescue service for people who disperse.
An aluminum silicate fiber felt is arranged in the heat insulation layer 5; when the heat insulation smoke tube works, the aluminum silicate fiber felt can enable the smoke tube to be more resistant to high temperature, is low in heat conductivity coefficient, and plays a role in heat insulation and sound insulation for the smoke tube.
The refractory layer 6 is filled with magnesium oxysulfide for gelation; when the fire-resistant and flame-retardant fire-resistant smoke tube is in use, magnesium oxysulfide is gelled, magnesium oxide is used as a main raw material, magnesium sulfate solution, crystal transformation agent, modifier, plant fiber, industrial waste residue and other substances are mixed to form the fire-resistant and flame-retardant smoke tube, and the fire-resistant and flame-retardant smoke tube is light in weight, high in strength, environment-friendly, fireproof, anti-folding, anti-seismic, heat-insulating, soundproof, nontoxic, light in weight, free of halogen return and frosting, waterproof and dampproof, and the like, and is very suitable for smoke tubes, so that the fire tube has practicability and fire resistance.
A second cavity 7 is formed in the first cavity 3 through the heat insulation layer 5 and the refractory layer 6; during operation, through setting up of second cavity 7, can make the inside hollow structure that forms of exhaust pipe, slows down the speed of heat conduction.
The smoke exhaust pipeline body 1 is made of color steel; during operation, the weight of the smoke exhaust pipeline can be reduced by setting the smoke exhaust pipeline body 1 made of color steel, the color steel has good heat insulation performance, and the surface of the smoke exhaust pipeline body is provided with corrosion resistance, flexible and quick installation and bright color. The surface of the smoke exhaust pipe is not required to be additionally decorated, the decoration requirement of public places is met, the smoke exhaust pipe is generally exposed, and the decoration cost can be reduced.
Working principle: through the arrangement of the fire insulation layer 4, the heat insulation layer 5 and the fire resistant layer 6, the smoke prevention and exhaust pipeline body 1 can bear for a longer time without damage, the phenomenon that a smoke exhaust system breaks down due to the damage of a smoke pipe is avoided, thick smoke in a place is scattered, the smoke is sucked into a respiratory system of a person, irreversible damage is caused to the human body, more powerful conditions and time are provided for fire rescue and personnel escape, aluminum silicate ceramic fiber needled silk-fling cotton is formed by taking aluminum oxide powder, silicon dioxide, zircon sand and the like as raw materials through resistance melting and high-speed centrifugal silk-fling, the heat conductivity can be reduced through the arrangement of the aluminum silicate ceramic fiber needled silk-fling cotton, the smoke pipe can bear for a longer time in a big fire, the time is increased for providing rescue service for people, the aluminum silicate fiber felt can enable the smoke pipe to be more resistant to high temperature, and the heat conductivity coefficient is low, the smoke tube has the effects of heat insulation and sound insulation, magnesium oxysulfide is gelled and takes magnesium oxide as a main raw material, magnesium sulfate solution, crystal transformation agent, modifier, plant fiber, industrial waste residue and other substances are mixed to form the smoke tube, the smoke tube is light in weight, high in strength, green and environment-friendly, has the characteristics of fire resistance, folding resistance, shock resistance, heat insulation, sound insulation, nontoxicity, light weight, no halogen return, frosting prevention, water resistance, moisture resistance and the like, is quite in line with the smoke tube material, enables the smoke tube to have practicability and fire resistance, can form a hollow structure inside the smoke tube through the establishment of the second cavity 7, slows down the heat conduction speed, can lighten the weight of the smoke tube through the establishment of the color steel as the smoke tube body 1, and has the advantages of good heat insulation and heat preservation performance of the color steel, flexible and quick installation and bright color. The surface of the smoke exhaust pipe is not required to be additionally decorated, the decoration requirement of public places is met, the smoke exhaust pipe is generally exposed, and the decoration cost can be reduced.
The front, rear, left, right, up and down are all based on fig. 1 in the drawings of the specification, the face of the device facing the observer is defined as front, the left side of the observer is defined as left, and so on, according to the viewing angle of the person.
In the description of the present utility model, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present utility model.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a prevent fire prevention parcel structure of exhaust duct which characterized in that: comprises a smoke exhaust pipeline body (1); flanges (2) are fixedly connected to the side walls of the two ends of the smoke exhaust pipeline body (1); a first cavity (3) is formed in the smoke exhaust pipeline body (1); the side walls around the first cavity (3) are respectively provided with a fire-proof layer (4), a heat-insulating layer (5) and a fire-proof layer (6) from outside to inside.
2. A fire-protection packing structure for a smoke-protection duct according to claim 1, wherein: aluminum silicate ceramic fiber needled silk-throwing cotton is arranged in the fire-resistant layer (4).
3. A fire-protection packing structure for a smoke-protection duct according to claim 2, wherein: an aluminum silicate fiber felt is arranged in the heat insulation layer (5).
4. A fire-protection packing structure for a smoke-protection duct according to claim 3, wherein: the refractory layer (6) is filled with magnesium oxysulfide for gelation.
5. The fire-resistant wrapping structure for a fire-resistant smoke evacuation duct of claim 4, wherein: the first cavity (3) is internally provided with a second cavity (7) through a heat insulation layer (5) and a fire-resistant layer (6).
6. The fire-resistant wrapping structure for a fire-resistant smoke evacuation duct of claim 5, wherein: the smoke exhaust pipeline body (1) is made of color steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321667425.9U CN220539119U (en) | 2023-06-28 | 2023-06-28 | Prevent fire prevention parcel structure of exhaust pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321667425.9U CN220539119U (en) | 2023-06-28 | 2023-06-28 | Prevent fire prevention parcel structure of exhaust pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220539119U true CN220539119U (en) | 2024-02-27 |
Family
ID=89975552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321667425.9U Active CN220539119U (en) | 2023-06-28 | 2023-06-28 | Prevent fire prevention parcel structure of exhaust pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220539119U (en) |
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2023
- 2023-06-28 CN CN202321667425.9U patent/CN220539119U/en active Active
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