CN114849109A - Compressed air foam generating device - Google Patents
Compressed air foam generating device Download PDFInfo
- Publication number
- CN114849109A CN114849109A CN202210457242.8A CN202210457242A CN114849109A CN 114849109 A CN114849109 A CN 114849109A CN 202210457242 A CN202210457242 A CN 202210457242A CN 114849109 A CN114849109 A CN 114849109A
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- foam
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- pipe
- compressed air
- mixing
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C5/00—Making of fire-extinguishing materials immediately before use
- A62C5/02—Making of fire-extinguishing materials immediately before use of foam
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
- A62C31/12—Nozzles specially adapted for fire-extinguishing for delivering foam or atomised foam
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
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Abstract
The invention relates to a foam generating device, in particular to a compressed air foam generating device. The invention aims to provide a compressed air foam generating device which can greatly improve the mixing capability of foam concentrate and high-pressure gas, so that the sprayed foam has the advantages of uniform and stable foam, high fire extinguishing speed, small foam consumption and the like. The technical scheme is as follows: a compressed air foam generating device comprises a first base and is characterized in that a protection cabinet, a control electric box, a metal guard plate and the like are arranged on the first base; the protection cabinet is installed on the upper left portion of the first base, the control electronic box is installed on the rear side of the upper right portion of the first base, and the metal guard plate is installed on the first base. The invention compresses air through the air compressor, so that the compressed air can be discharged into the foam discharge pipe through the air inlet hose and sprayed out from the fire fighting pipe together with the mixed foamed foam, and finally, the fire extinguishing or the covering is implemented through the fire fighting water cannon.
Description
Technical Field
The invention relates to a foam generating device, in particular to a compressed air foam generating device.
Background
The oil-immersed power transformer contains a large amount of insulating oil, and a certain amount of combustible materials such as paper, cotton yarn, cloth, wood and the like, and the organic combustible materials are easy to cause fire and explosion when meeting high temperature, sparks and electric arcs, so that the danger of fire exists in the transformer.
The foam sprayed by the existing foam fire extinguisher is mixed with common air, the generated foam is uneven and stable, the fire extinguishing speed is slow, and the foam consumption is large.
Therefore, a compressed air foam generating device which can greatly increase the mixing capacity of foam concentrate and high-pressure gas and enables the sprayed foam to have the advantages of uniformity and stability of foam, high fire extinguishing speed, small foam consumption and the like needs to be designed.
Disclosure of Invention
In order to overcome the defects that the foam sprayed by the existing foam fire extinguisher is mixed with common air, the generated foam is uneven and stable, the fire extinguishing speed is slow, and the foam dosage is large, the invention aims to provide the compressed air foam generating device which can greatly improve the mixing capability of foam liquid and high-pressure gas, so that the sprayed foam has the advantages of uniformity and stability of the foam, high fire extinguishing speed, small foam dosage and the like.
The technical scheme is as follows: a compressed air foam generating device comprises a first base and is characterized in that a protection cabinet, a control electric box, a metal guard plate, a second base, a main water pump, a standby water pump, a water inlet pipe, a foam discharging pipe, a foam mixing device and a pressurizing device are arranged on the first base; the protection cabinet is arranged on the left part of the first base, the control electric box is arranged on the rear side of the right part of the first base, the metal guard plate is arranged on the first base, and the metal guard plate surrounds the protection cabinet and the control electric box; the foam water pump comprises a first base, a second base, a main water pump, a standby water pump, a foam discharge pipe and a foam discharge pipe, wherein the first base is provided with the second base; the second base is provided with a foam mixing device used for mixing foam, the foam mixing device is communicated with the water inlet pipe and the foam discharge pipe, a pressurizing device is arranged in the protection cabinet and is communicated with the foam discharge pipe.
As further preferred scheme, foam mixing arrangement is including dividing branch pipe, purge valve, liquid feeding pipe, liquid feeding valve, foam liquid pump, shunt tubes and foam discharge pipe, the intercommunication is equipped with the branch pipe that divides on the inlet tube, be equipped with the purge valve on the branch pipe that divides, the intercommunication is equipped with the liquid feeding pipe on the branch pipe that divides, be equipped with the liquid feeding valve on the liquid feeding pipe, install the foam liquid pump on the second base, the foam liquid pump passes through shunt tubes and liquid feeding pipe intercommunication, and the intercommunication is equipped with the foam and discharges into the pipe between foam liquid pump and the foam discharge pipe.
As a further preferable scheme, the pressurizing device comprises an air compressor, an exhaust valve and an air inlet hose, the air compressor is mounted on the first base and is located in the metal guard plate, the exhaust valve is arranged at an exhaust port of the air compressor, and the air inlet hose for air circulation is arranged between the exhaust valve and the foam discharge pipe.
As further preferred scheme, still including secondary mixing apparatus, secondary mixing apparatus is including the tripod mounting bracket, first pivot, driving fan blade, six arris poles, second pivot and mixing rod, the intraductal left side fixed mounting of foam-discharging has two tripod mounting brackets, first pivot is installed to equal rotary type on two tripod mounting brackets, install driving fan blade with the mode of key-type connection in the first pivot on the right, the slidingtype is equipped with six arris poles between two first pivots, the second pivot is installed to six arris pole right-hand members, it has native font cavity to open in the second pivot, the vertical cavity slidingtype of native font cavity is equipped with mixing rod.
As a further preferred scheme, the foam discharging device further comprises a linear driving frame and a horizontal spring, the linear driving frame is fixedly mounted in the middle of the hexagonal rod, the horizontal spring is connected between the linear driving frame and the first rotating shaft on the right side, a driving groove is formed in the middle of the foam discharging pipe, and the tail end of the linear driving frame is located in the driving groove.
As further preferred scheme, still including reset spring, piston rod and cross mounting bracket, be connected with reset spring between the vertical cavity of mixing rod inner and native font cavity, the horizontal intracavity slidingtype of native font cavity is equipped with the piston rod, the native font cavity between piston rod and the mixing rod inner has been full of hydraulic oil, the right part fixed mounting of foam discharging pipe has the cross mounting bracket, cross mounting bracket left side and piston rod right-hand member fixed connection.
As a further preferable scheme, the device also comprises a partition plate, and the middle part of the foam discharge pipe is provided with the partition plate for blocking foam.
The beneficial effects are that: the air compressor compresses air, so that the compressed air is discharged into the foam discharge pipe through the air inlet hose and is sprayed out of the fire fighting pipe together with the mixed foamed foam, finally, the fire fighting or covering is implemented through the fire fighting water cannon, and the foam is sprayed out through the compressed air, so that the sprayed foam has the advantages of high kinetic energy, long spraying distance, uniform and stable foam, high fire fighting speed, small foam consumption and the like; the high-pressure foam can be further mixed under the action of the mixing rod, and the mixing capacity of the foam concentrate and the high-pressure gas can be greatly improved under the action of the mixing rod.
Drawings
Fig. 1 is a schematic perspective view of a first embodiment of the present invention.
Fig. 2 is a schematic perspective view of a second embodiment of the present invention.
Fig. 3 is a schematic cross-sectional view of a first embodiment of the present invention.
Fig. 4 is a schematic cross-sectional view of a second embodiment of the present invention.
Fig. 5 is a schematic perspective view of a first embodiment of the foam mixing device of the present invention.
Fig. 6 is a schematic perspective view of the pressurizing device of the present invention.
Fig. 7 is a schematic perspective view of a second embodiment of the foam mixing device of the present invention.
Fig. 8 is a schematic perspective view of a first embodiment of the secondary mixing apparatus of the present invention.
Fig. 9 is a schematic perspective view of a second embodiment of the secondary mixing apparatus of the present invention.
Fig. 10 is a schematic perspective view of a third embodiment of the secondary mixing apparatus of the present invention.
Fig. 11 is a perspective view of a second rotating shaft and a mixing rod according to the present invention.
Fig. 12 is a schematic perspective view of a first embodiment of the cross mount and drive slot of the present invention.
Fig. 13 is a schematic perspective view of a second embodiment of the cross mount and drive slot of the present invention.
Number designation in the figures: 1-first base, 2-protective cabinet, 3-control electrical box, 31-metal guard plate, 4-second base, 5-main water pump, 6-spare water pump, 7-water inlet pipe, 9-foam discharge pipe, 10-foam mixing device, 101-water diversion branch pipe, 102-cleaning valve, 103-liquid feeding pipe, 104-liquid feeding valve, 105-foam liquid pump, 107-shunt pipe, 108-foam discharge pipe, 11-pressurizing device, 111-air compressor, 112-air discharge valve, 113-air inlet hose, 12-secondary mixing device, 121-three-foot mounting rack, 122-first rotating shaft, 123-driving fan blade, 124-hexagonal rod, 125-second rotating shaft, 126-soil-shaped cavity, 127-mixing rod, 13-linear driving frame, 14-horizontal spring, 15-driving groove, 16-return spring, 17-piston rod, 18-cross mounting frame and 19-clapboard.
Detailed Description
The following further describes the technical solution with reference to specific embodiments, and it should be noted that: the words upper, lower, left, right, and the like used herein to indicate orientation are merely for the location of the illustrated structure in the corresponding figures. The serial numbers of the parts are themselves numbered herein, for example: first, second, etc. are used solely to distinguish one from another as to objects described herein, and do not have any sequential or technical meaning. The application states that: the connection and coupling, unless otherwise indicated, include both direct and indirect connections (couplings).
Example 1
A compressed air foam generating device is shown in figures 1-6 and comprises a first base 1 and is characterized in that a protective cabinet 2, a control electric box 3, a metal guard plate 31, a second base 4, a main water pump 5, a standby water pump 6, a water inlet pipe 7, a foam discharge pipe 9, a foam mixing device 10 and a pressurizing device 11 are arranged on the first base 1; the protection cabinet 2 is mounted on the left portion of the first base 1, the control electric box 3 is mounted on the rear side of the right portion of the first base 1, the metal guard plate 31 is mounted on the first base 1, and the metal guard plate 31 surrounds the protection cabinet 2 and the control electric box 3; the first base 1 is provided with a second base 4, the second base 4 is provided with a main water pump 5 and a standby water pump 6 through bolts, and the rear sides of the main water pump 5 and the standby water pump 6 are communicated with a foam discharge pipe 9; wherein, be equipped with the foam mixing arrangement 10 that is used for mixing the foam on the second base 4, communicate between foam mixing arrangement 10 and inlet tube 7 and the foam discharge pipe 9, be equipped with pressure device 11 in the protection cabinet 2, pressure device 11 and foam discharge pipe 9 intercommunication.
The pressurizing device 11 comprises an air compressor 111, an exhaust valve 112 and an air inlet hose 113, the air compressor 111 is mounted on the first base 1, the air compressor 111 is located in the metal guard plate 31, the exhaust valve 112 is arranged at an exhaust port of the air compressor 111, and the air inlet hose 113 used for air circulation is arranged between the exhaust valve 112 and the foam discharge pipe 9.
When foam needs to be sprayed, an operator firstly connects a water source pipe to a water inlet pipe 7, then connects a foam liquid storage tank to a liquid adding pipe 103, finally connects a fire fighting pipe to a foam discharging pipe 9, starts an air compressor 111 and a main water pump 5 step by step through a control electric box 3 to pump water, when the main water pump 5 fails, can start a standby water pump 6, pumps clear water through the main water pump 5 to enter the water inlet pipe 7, the clear water enters the foam discharging pipe 9 along the water inlet pipe 7, starts a foam liquid pump 105 to pump foam liquid through a liquid adding valve 104, the foam liquid is discharged into the foam discharging pipe 9 through a foam discharging pipe 108 and is primarily mixed with the clear water, meanwhile, the operator can open an exhaust valve 112, compressed air is discharged into the foam discharging pipe 9 through an air inlet hose 113 and is sprayed out of the fire fighting pipe together with the mixed foam, and finally extinguishes or covers through a fire fighting water cannon, after the fire is extinguished, the cleaning valve 102 is automatically opened through a system for controlling the electric box 3, clean water can be injected into the liquid adding pipe 103 through the cleaning valve 102, foam liquid remained in the liquid adding pipe 103 is automatically cleaned, the foam liquid remained in the liquid adding pipe 103 is avoided, the liquid adding pipe 103 can be kept clean all the time, then the main water pump 5, the air compressor 111, the foam liquid pump 105 and the exhaust valve 112 are closed, then an operator unloads the water source pipe and the fire fighting pipe, and separates the liquid adding pipe 103 from the foam liquid storage tank. The air after the compression sprays the foam, can make the foam that sprays have high kinetic energy, and the jet distance is far away, and the foam is even stable, and the speed of putting out a fire is fast, and the foam quantity advantage such as few.
Example 2
Based on embodiment 1, as shown in fig. 6 to 13, the secondary mixing device 12 further includes a three-leg mounting frame 121, a first rotating shaft 122, driving blades 123, a hexagonal rod 124, a second rotating shaft 125 and a mixing rod 127, two three-leg mounting frames 121 are fixedly mounted on the left side in the foam discharging pipe 9, the first rotating shaft 122 is rotatably mounted on the two three-leg mounting frames 121, the driving blades 123 are mounted on the right first rotating shaft 122 in a key connection manner, the hexagonal rod 124 is slidably disposed between the two first rotating shafts 122, the second rotating shaft 125 is mounted on the right end of the hexagonal rod 124, a soil-shaped cavity 126 is formed in the second rotating shaft 125, and the mixing rod 127 is slidably disposed in a vertical cavity of the soil-shaped cavity 126.
The foam discharging pipe is characterized by further comprising a linear driving frame 13 and a horizontal spring 14, the linear driving frame 13 is fixedly mounted in the middle of the hexagonal rod 124, the horizontal spring 14 is connected between the linear driving frame 13 and the right first rotating shaft 122, a driving groove 15 is formed in the middle of the foam discharging pipe 9, and the tail end of the linear driving frame 13 is located in the driving groove 15.
Still including reset spring 16, piston rod 17 and cross mounting bracket 18, be connected with reset spring 16 between the vertical cavity of mixing rod 127 inner and native font cavity 126, the horizontal intracavity slidingtype of native font cavity 126 is equipped with piston rod 17, be full of hydraulic oil in the native font cavity 126 between piston rod 17 and mixing rod 127 the inner, the right part fixed mounting of foam discharging pipe 9 has cross mounting bracket 18, cross mounting bracket 18 left side and piston rod 17 right-hand member fixed connection.
The device also comprises a partition plate 19, and the middle part of the foam discharge pipe 9 is provided with the partition plate 19 for blocking foam.
When the compressed air is sprayed onto the driving fan blade 123, the driving fan blade 123 rotates, the driving fan blade 123 drives the first rotating shaft 122 to rotate, the first rotating shaft 122 drives the hexagonal rod 124 and the second rotating shaft 125 to rotate, and the second rotating shaft 125 drives the mixing rod 127 to rotate in the foam discharging pipe 9, so that the high-pressure foam is further mixed under the action of the mixing rod 127, and the mixing capability of the foam liquid and the high-pressure gas can be greatly improved under the action of the mixing rod 127.
When the hexagonal rod 124 rotates, the linear driving frame 13 is driven to rotate in the driving groove 15, the linear driving frame 13 continuously moves left and right under the action of the driving groove 15, the horizontal spring 14 plays a stabilizing role, and the linear driving frame 13 drives the hexagonal rod 124, the second rotating shaft 125 and the mixing rod 127 to continuously move left and right, so that the mixing capacity of the foam liquid and the high-pressure gas can be further improved.
When the second rotating shaft 125 moves to the right, because the piston rod 17 and the cross mounting rack 18 are fixedly mounted, the hydraulic oil in the soil-shaped cavity 126 is squeezed to drive the mixing rod 127 to expand outwards, the return spring 16 compresses, and when the second rotating shaft 125 moves to the left, the hydraulic oil in the soil-shaped cavity 126 is pumped out, so that no pressure is applied to the mixing rod 127 any more, and the mixing rod 127 is reset inwards under the action of the return spring 16, so that the outer diameter of the mixing rod 127 can be changed, and the mixing capability of the foam concentrate and the high-pressure gas is further improved.
The middle part of the foam discharge pipe 9 is provided with a clapboard 19, the middle part of the clapboard 19 is provided with a through hole, and the clapboard 19 is used for blocking foam.
Although embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.
Claims (7)
1. A compressed air foam generating device is characterized by comprising a first base (1) and is characterized in that a protective cabinet (2), a control electric box (3), a metal guard plate (31), a second base (4), a main water pump (5), a standby water pump (6), a water inlet pipe (7), a foam discharge pipe (9), a foam mixing device (10) and a pressurizing device (11) are mounted on the first base (1);
the protection cabinet (2) is mounted on the left portion of the first base (1), the control electric box (3) is mounted on the rear side of the right portion of the first base (1), the metal guard plate (31) is mounted on the first base (1), and the metal guard plate (31) surrounds the protection cabinet (2) and the control electric box (3);
the foam water pump comprises a first base (1), a second base (4), a main water pump (5) and a standby water pump (6), wherein the first base (1) is provided with the second base (4), the second base (4) is provided with the main water pump (5) and the standby water pump (6) through bolts, and the rear sides of the main water pump (5) and the standby water pump (6) are communicated with each other to be provided with a foam discharge pipe (9);
wherein, be equipped with foam mixing arrangement (10) that is used for mixing the foam on second base (4), communicate between foam mixing arrangement (10) and inlet tube (7) and foam discharge pipe (9), be equipped with pressure device (11) in protection cabinet (2), pressure device (11) and foam discharge pipe (9) intercommunication.
2. The foam generating device for the compressed air as claimed in claim 1, wherein the foam mixing device (10) comprises a water diversion branch pipe (101), a cleaning valve (102), a liquid adding pipe (103), a liquid adding valve (104), a foam liquid pump (105), a shunt pipe (107) and a foam discharging pipe (108), the water inlet pipe (7) is communicated with the water diversion branch pipe (101), the cleaning valve (102) is arranged on the water diversion branch pipe (101), the liquid adding pipe (103) is communicated with the water diversion branch pipe (101), the liquid adding valve (104) is arranged on the liquid adding pipe (103), the foam liquid pump (105) is installed on the second base (4), the foam liquid pump (105) is communicated with the liquid adding pipe (103) through the shunt pipe (107), and the foam discharging pipe (108) is communicated between the foam liquid pump (105) and the foam discharging pipe (9).
3. A compressed air foam generating apparatus according to claim 2, wherein the pressurizing means (11) comprises an air compressor (111), an exhaust valve (112) and an air inlet hose (113), the air compressor (111) is mounted on the first base (1), the air compressor (111) is located in the metal shield (31), the exhaust valve (112) is provided at the exhaust port of the air compressor (111), and the air inlet hose (113) for air circulation is provided between the exhaust valve (112) and the foam discharge pipe (9).
4. The foam generating device for the compressed air as claimed in claim 3, which further comprises a secondary mixing device (12), wherein the secondary mixing device (12) comprises three-leg mounting frames (121), first rotating shafts (122), driving fan blades (123), six-edge rods (124), a second rotating shaft (125) and a mixing rod (127), two three-leg mounting frames (121) are fixedly mounted at the left side in the foam discharging pipe (9), the first rotating shafts (122) are rotatably mounted on the two three-leg mounting frames (121), the driving fan blades (123) are mounted on the first rotating shaft (122) at the right side in a key connection manner, the six-edge rods (124) are slidably arranged between the two first rotating shafts (122), the second rotating shaft (125) is mounted at the right end of the six-edge rods (124), and a soil-shaped cavity (126) is formed in the second rotating shaft (125), a mixing rod (127) is arranged in the vertical cavity of the soil-shaped cavity (126) in a sliding way.
5. A compressed air foam generating device as claimed in claim 4, characterized by further comprising a linear driving frame (13) and a horizontal spring (14), wherein the linear driving frame (13) is fixedly installed in the middle of the hexagonal rod (124), the horizontal spring (14) is connected between the linear driving frame (13) and the right first rotating shaft (122), the middle of the foam discharging pipe (9) is provided with a driving groove (15), and the tail end of the linear driving frame (13) is located in the driving groove (15).
6. A compressed air foam generating device as claimed in claim 5, characterized by further comprising a return spring (16), a piston rod (17) and a cross mounting bracket (18), wherein the return spring (16) is connected between the inner end of the mixing rod (127) and the vertical cavity of the soil-shaped cavity (126), the piston rod (17) is slidably arranged in the horizontal cavity of the soil-shaped cavity (126), the soil-shaped cavity (126) between the piston rod (17) and the inner end of the mixing rod (127) is filled with hydraulic oil, the cross mounting bracket (18) is fixedly mounted at the right part of the foam discharging pipe (9), and the left side of the cross mounting bracket (18) is fixedly connected with the right end of the piston rod (17).
7. A compressed-air foam-generating device as claimed in claim 6, characterized in that it further comprises a partition (19), the foam-discharge duct (9) being provided in its middle with a partition (19) for blocking foam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210457242.8A CN114849109B (en) | 2022-04-27 | 2022-04-27 | Compressed air foam generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210457242.8A CN114849109B (en) | 2022-04-27 | 2022-04-27 | Compressed air foam generating device |
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| Publication Number | Publication Date |
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| CN114849109A true CN114849109A (en) | 2022-08-05 |
| CN114849109B CN114849109B (en) | 2023-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210457242.8A Active CN114849109B (en) | 2022-04-27 | 2022-04-27 | Compressed air foam generating device |
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| CN (1) | CN114849109B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1595579A2 (en) * | 2004-04-30 | 2005-11-16 | Andreas Dipl.-Ing.(FH) Vigh | Device for fire fighting with a foam mixing device |
| CN109821168A (en) * | 2019-03-06 | 2019-05-31 | 王浩 | A kind of variable-flow foams mix feed system and fire fighting truck |
| CN213555025U (en) * | 2020-09-04 | 2021-06-29 | 江西荣和特种消防设备制造有限公司 | Impact through-flow type high-multiple foam generator |
| CN113577625A (en) * | 2021-07-28 | 2021-11-02 | 迪威弗智能装备集团有限公司 | Foam high-altitude fire extinguishing system |
| CN113577609A (en) * | 2021-08-06 | 2021-11-02 | 国网安徽省电力有限公司电力科学研究院 | Mixing device for compressed air foam fire extinguishing system |
| CN114011310A (en) * | 2021-10-29 | 2022-02-08 | 广东永强奥林宝国际消防汽车有限公司 | Compressed air foam fluid mixed structure |
| CN216061797U (en) * | 2021-08-06 | 2022-03-18 | 国网安徽省电力有限公司电力科学研究院 | Mixing device for compressed air foam fire extinguishing system |
-
2022
- 2022-04-27 CN CN202210457242.8A patent/CN114849109B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1595579A2 (en) * | 2004-04-30 | 2005-11-16 | Andreas Dipl.-Ing.(FH) Vigh | Device for fire fighting with a foam mixing device |
| CN109821168A (en) * | 2019-03-06 | 2019-05-31 | 王浩 | A kind of variable-flow foams mix feed system and fire fighting truck |
| CN213555025U (en) * | 2020-09-04 | 2021-06-29 | 江西荣和特种消防设备制造有限公司 | Impact through-flow type high-multiple foam generator |
| CN113577625A (en) * | 2021-07-28 | 2021-11-02 | 迪威弗智能装备集团有限公司 | Foam high-altitude fire extinguishing system |
| CN113577609A (en) * | 2021-08-06 | 2021-11-02 | 国网安徽省电力有限公司电力科学研究院 | Mixing device for compressed air foam fire extinguishing system |
| CN216061797U (en) * | 2021-08-06 | 2022-03-18 | 国网安徽省电力有限公司电力科学研究院 | Mixing device for compressed air foam fire extinguishing system |
| CN114011310A (en) * | 2021-10-29 | 2022-02-08 | 广东永强奥林宝国际消防汽车有限公司 | Compressed air foam fluid mixed structure |
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| CN114849109B (en) | 2023-08-01 |
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