氣體滅火的加壓貯存方式知識介紹
來源：http://m.n3462.cn/ 日期：2022-01-24
氣體滅火劑的臨界溫度,、飽和蒸汽壓等物理特性，決定其加壓貯存方式,，與設(shè)計(jì)應(yīng)用密切相關(guān),！
The critical temperature, saturated vapor pressure and other physical characteristics of gas fire extinguishing agent determine its pressurized storage mode, which is closely related to design and application!
按加壓貯存方式分類，氣體滅火可分為：自壓式氣體滅火系統(tǒng),、內(nèi)貯壓式氣體滅火系統(tǒng),、外貯壓式氣體滅火系統(tǒng),。
According to the classification of pressurized storage mode, gas fire extinguishing can be divided into: self pressure gas fire extinguishing system, internal pressure storage gas fire extinguishing system and external pressure storage gas fire extinguishing system.
一、自壓式氣體滅火系統(tǒng)：
1,、 Self pressure gas fire extinguishing system:
自壓式氣體滅火系統(tǒng)是指滅火劑瓶組中的滅火劑依靠自身壓力進(jìn)行輸送的滅火系統(tǒng),。
Self pressure gas fire extinguishing system refers to the fire extinguishing system in which the fire extinguishing agent in the fire extinguishing agent bottle group is transported by its own pressure.
以下兩種情況，一般都采用自壓式氣體滅火系統(tǒng)：
Self pressure gas fire extinguishing system is generally used in the following two cases:
1,、使用溫度高于臨界溫度的滅火劑,，這類滅火劑在使用溫度范圍內(nèi)永遠(yuǎn)不可能被液化，都是采用高壓貯存,，可以依靠自身壓力完成滅火劑輸送,，屬自壓式氣體滅火系統(tǒng)。
1. Fire extinguishing agents with a temperature higher than the critical temperature can never be liquefied within the service temperature range. They are stored under high pressure and can complete the transmission of fire extinguishing agents by relying on their own pressure. They are self pressurized gas fire extinguishing systems.
示例：1G541主要組份以及G541,、IG55,、IG100、IG01等的臨界溫度都遠(yuǎn)低于使用溫度,，屬于自壓式氣體滅火系統(tǒng),。
Example: the critical temperatures of main components of 1G541 and g541, ig55, IG100, IG01, etc. are far lower than the service temperature, which belongs to self pressure gas fire extinguishing system.
（IG541、IG55,、IG100,、IG01均為氣態(tài)貯存）
(IG541, ig55, IG100 and IG01 are stored in gaseous state)
2、使用溫度低于臨界溫度,，但飽和蒸氣壓較高的滅火劑,，可以依靠自身壓力完成滅火劑輸送，也可以采用自壓式氣體滅火系統(tǒng),。
2. The fire extinguishing agent with temperature lower than the critical temperature but high saturated vapor pressure can be transported by self pressure, or self pressure gas fire extinguishing system can be used.
示例：二氧化碳的臨界溫度31.26℃,，20℃時(shí)的飽和蒸氣壓5.7MPa，屬于自壓式氣體滅火系統(tǒng),。
Example: the critical temperature of carbon dioxide is 31.26 ℃, and the saturated vapor pressure at 20 ℃ is 5.7mpa. It belongs to self pressure gas fire extinguishing system.
二,、內(nèi)貯壓式氣體滅火系統(tǒng)：
2、 Internal pressure storage gas fire extinguishing system:
內(nèi)貯壓式氣體滅火系統(tǒng)的滅火劑在瓶組內(nèi)用惰性氣體進(jìn)行加壓貯存,，系統(tǒng)動作時(shí)滅火劑依靠瓶組內(nèi)的加壓氣體進(jìn)行輸送,。
The fire extinguishing agent of the internal pressure storage gas fire extinguishing system is pressurized and stored with inert gas in the bottle group. When the system operates, the fire extinguishing agent is transported by the pressurized gas in the bottle group.
在使用溫度范圍內(nèi)，飽和蒸氣壓較低的滅火劑,，必須依靠惰性氣體（氮?dú)猓┰鰤?，依靠高壓氮?dú)馔瓿蓽缁饎┹斔汀?/div>
Within the service temperature range, the fire extinguishing agent with low saturated vapor pressure must be pressurized by inert gas (nitrogen) and transported by high-pressure nitrogen.
示例：七氟丙烷在20℃時(shí)的飽和蒸氣壓為0.39MPa，必須依靠氮?dú)庠鰤翰拍苡行п尫?，一般采用?nèi)貯壓方式,。
Example: the saturated vapor pressure of heptafluoropropane at 20 ℃ is 0.39mpa, which can be effectively released only by nitrogen pressurization. Generally, the internal pressure storage method is adopted.
三、外貯壓式氣體滅火系統(tǒng)：
3,、 External pressure storage gas fire extinguishing system:
外貯壓式氣體滅火系統(tǒng)是指驅(qū)動氣體（氮?dú)猓┡c滅火劑分別儲存的滅火系統(tǒng),。
External pressure storage gas fire extinguishing system refers to the fire extinguishing system in which the driving gas (nitrogen) and fire extinguishing agent are stored separately.
示例：七氟丙烷一般采用內(nèi)貯壓方式，也可以采用外貯壓方式,。
Example: heptafluoropropane generally adopts internal pressure storage or external pressure storage.
在外貯壓式的七氟丙烷系統(tǒng)中,，高壓氮?dú)赓A存在動力瓶組中；七氟丙烷藥劑貯存在藥劑瓶組中,。當(dāng)系統(tǒng)啟動時(shí),，動力瓶組中的高壓氮?dú)饨?jīng)減壓閥釋放藥劑瓶組，推動七氟丙烷滅火劑釋放防護(hù)區(qū),。
In the external pressure storage heptafluoropropane system, high-pressure nitrogen is stored in the power bottle group; Heptafluoropropane is stored in the reagent bottle group. When the system is started, the high-pressure nitrogen in the power bottle group is released to the reagent bottle group through the pressure reducing valve to promote the release of heptafluoropropane fire extinguishing agent to the protection area.
小貼士：
Tips:
1,、臨界溫度：能夠使物質(zhì)由氣相變?yōu)橐合嗟母邷囟冉信R界溫度。每種物質(zhì)都有一個(gè)特定的溫度,，在這個(gè)溫度以上,，無論怎樣增大壓強(qiáng)，氣態(tài)物質(zhì)不會液化,，這個(gè)溫度就是臨界溫度,。
1. Critical temperature: the maximum temperature that can make the material change from gas to liquid phase is called critical temperature. Each substance has a specific temperature. Above this temperature, no matter how the pressure is increased, the gaseous substance will not liquefy. This temperature is the critical temperature.
2、飽和蒸氣壓：在密閉條件中,，在一定溫度下,，與液體或固體處于相平衡的蒸氣所具有的壓力稱為飽和蒸氣壓。同一物質(zhì)在不同溫度下有不同的蒸氣壓,，并隨著溫度的升高而增大,。
2. Saturated vapor pressure: in closed conditions, the pressure of vapor in equilibrium with liquid or solid at a certain temperature is called saturated vapor pressure. The same substance has different vapor pressure at different temperatures and increases with the increase of temperature.
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