SU956811A1 - Fire-fighting installation - Google Patents
Fire-fighting installation Download PDFInfo
- Publication number
- SU956811A1 SU956811A1 SU813250256A SU3250256A SU956811A1 SU 956811 A1 SU956811 A1 SU 956811A1 SU 813250256 A SU813250256 A SU 813250256A SU 3250256 A SU3250256 A SU 3250256A SU 956811 A1 SU956811 A1 SU 956811A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- foam
- inert
- fire
- generator
- exhaust gas
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C99/00—Subject matter not provided for in other groups of this subclass
- A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
- A62C99/0018—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using gases or vapours that do not support combustion, e.g. steam, carbon dioxide
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C99/00—Subject matter not provided for in other groups of this subclass
- A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
- A62C99/0036—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using foam
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Description
Изобретение относитс к горной промышленности и может быть использовано дл тушени подземных пожаров инертной пеной в изолированных пространствах шахт. Известно устройство д)1 тушени пожаров газомеханической пеной в изолированных пространствах шахт, включающее диффузор с сетками, конфузор, пеногенератор с форсункой, газопровод и коллектор, при этом устройство снабжено рычагом и жалюз ми, соединенными с пенопроводом 1. Недостатком устройство вл етс невозможность его использовани изза низкого напора дл пpe c пpeждeни и тушени эндогенных пожаров при нагнетании инертной пены на основе жидкого азота в изолированное пространство по скважинам и трубопроводам. Кроме того, низка температуры азота ведет к обледенению пеногенераторной сетки, что снижает качество пены и производительность устройства. Наиболее близкой к изобретению по технической сущности и достигаемому результату вл етс устройство, соде жащее емкость дл , воды с насосом и водомером, пеносмеситель емкости с пенообразователем и жидким азотом, генератор инертной пены, расходомеры и трубопровод подачи инертной пены С2. Однако при подаче дкого азота, имеющего низкую температуру (), происходит мгновенное его испарение, при этом не исключаетс обмерзание трубопровода, особенно при повышении производительности подачи азота при транспортировании пены по трубопроводам или скважинам с поверхности. Максимальна производительность известного устройства определ етс по формуле Q q , (1) где q - расход пенообразующей жидкости , м К)р критическа кратность инертной пены. Критическа кратность пены зависит от температуры пенообразующей воды, пены и жидкого азота: РЪ ь() а СДт-Т, где pg -плотность воды; Cg-теплоемкость воды; Tg-температура воды,Т-температура пены;The invention relates to the mining industry and can be used to extinguish underground fires with inert foam in isolated spaces of mines. A device is known to e) 1 extinguishing fires with gas-mechanical foam in isolated spaces of mines, including a diffuser with grids, a confuser, a foam generator with a nozzle, a gas pipeline and a manifold, and the device is equipped with a lever and louvers connected to the foam pipe 1. The disadvantage of the device is the impossibility of its use due to the low head pressure for the front and the extinguishing of endogenous fires during the injection of inert foam based on liquid nitrogen into the isolated space along wells and pipelines. In addition, low nitrogen temperature leads to icing of the foam generator mesh, which reduces the quality of the foam and the performance of the device. Closest to the invention to the technical essence and the achieved result is a device containing a tank for, water with a pump and a water meter, a foam tank mixer with a foaming agent and liquid nitrogen, an inert foam generator, flow meters and an inert foam supply line C2. However, when feeding low-temperature nitrogen (), it instantly evaporates, while the pipeline does not freeze, especially when the nitrogen supply rate increases when the foam is transported through pipelines or wells from the surface. The maximum performance of a known device is determined by the formula Q q, (1) where q is the flow rate of the foaming liquid, m K) is the critical ratio of the inert foam. The critical multiplicity of foam depends on the temperature of foaming water, foam and liquid nitrogen: Pb () and SDt-T, where pg is the density of water; Cg is the heat capacity of water; Tg-water temperature, T-temperature foam;
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU813250256A SU956811A1 (en) | 1981-02-25 | 1981-02-25 | Fire-fighting installation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU813250256A SU956811A1 (en) | 1981-02-25 | 1981-02-25 | Fire-fighting installation |
Publications (1)
Publication Number | Publication Date |
---|---|
SU956811A1 true SU956811A1 (en) | 1982-09-07 |
Family
ID=20943838
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU813250256A SU956811A1 (en) | 1981-02-25 | 1981-02-25 | Fire-fighting installation |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU956811A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006079142A1 (en) * | 2004-10-21 | 2006-08-03 | Technosearch Pty Ltd | Fire fighting foam generating apparatus |
CN104399209B (en) * | 2014-10-24 | 2017-05-10 | 长沙中联消防机械有限公司 | Vehicle-mounted compressed air foam system and vehicle with same |
EP3590580A4 (en) * | 2017-03-01 | 2020-12-30 | China Petroleum & Chemical Corporation | Foam production method, fire extinguishing method, and foam extinguishing appliance |
-
1981
- 1981-02-25 SU SU813250256A patent/SU956811A1/en active
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006079142A1 (en) * | 2004-10-21 | 2006-08-03 | Technosearch Pty Ltd | Fire fighting foam generating apparatus |
CN104399209B (en) * | 2014-10-24 | 2017-05-10 | 长沙中联消防机械有限公司 | Vehicle-mounted compressed air foam system and vehicle with same |
EP3590580A4 (en) * | 2017-03-01 | 2020-12-30 | China Petroleum & Chemical Corporation | Foam production method, fire extinguishing method, and foam extinguishing appliance |
AU2018226928B2 (en) * | 2017-03-01 | 2021-09-30 | China Petroleum & Chemical Corporation | Foam production method, fire extinguishing method, and foam extinguishing appliance |
US11559711B2 (en) | 2017-03-01 | 2023-01-24 | China Petroleum & Chemical Corporation | Foam producing method, fire extinguishing method, and appliance for foam extinguishing |
US11980785B2 (en) | 2017-03-01 | 2024-05-14 | China Petroleum & Chemical Corporation | Foam producing method, fire extinguishing method, and appliance for foam extinguishing |
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