預作用報警閥安裝什么樣的噴淋頭
來源：http://m.xintli.net/ 日期：2022-10-05
現在很多相應要求的消防產品的需求量越來越大，由于北方的天氣條件，對預作用報警閥的需求更加廣泛，下面為了更好的使用它，跟著
川消小編來了解下相關問題--預作用報警閥安裝什么樣的噴淋頭。
At present, the demand for many fire protection products with corresponding requirements is increasing. Due to the weather conditions in the north, the demand for pre action alarm valves is more extensive. In order to better use it, we will follow the Sichuan Xiaobian to understand the related problem -- what kind of sprinkler head is installed for the pre action alarm valve.
1、采用閉式噴頭。
1. The closed nozzle is adopted.
2、預作用系統平時不充水，當探頭報警后，系統管道才開啟充水，到了規定溫度，噴頭玻璃球破裂噴水。
2. The preaction system is not filled with water at ordinary times. When the probe gives an alarm, the system pipeline starts to fill with water. When the specified temperature is reached, the glass ball of the nozzle breaks and sprays water.
3、預作用系統預作用閥是由雨淋閥和濕式報警閥上下串接而成，雨淋閥位于供水側，濕式報警閥位于系統側而成為預作用閥組。系統由預作用閥水力警鈴、壓力開關、空壓機、空氣維護裝置、信號碟閥等組成，安裝閉式灑水噴頭，并以常用的探測系統作為報警和啟動的裝置。
3. The pre action valve of the pre action system is composed of a deluge valve and a wet alarm valve in series from top to bottom. The deluge valve is located at the water supply side, and the wet alarm valve is located at the system side, forming a pre action valve group. The system is composed of pre action valve hydraulic alarm bell, pressure switch, air compressor, air maintenance device, signal butterfly valve, etc. The closed sprinkler head is installed, and the commonly used detection system is used as the alarm and starting device.
其動作原理：
Its action principle:
一旦發生火災，安裝在保護區感溫感煙火災探測器發出火災報等信號。火災報警控制器或消防控制中心，接到報警信號后發出指令打開雨淋閥上電磁閥，使雨淋閥開啟，壓力水流進系統側管網，變成濕式噴水系統，同時水力警鈴發出報苦，壓力開關動作反饋給控制中心顯示管路已充水，并啟動消防泵。
In case of fire, the temperature and smoke detectors installed in the protection area will send out fire alarm and other signals. After receiving the alarm signal, the fire alarm controller or the fire control center sends a command to open the solenoid valve on the deluge valve to open the deluge valve. The pressure water flows into the pipe network at the system side and becomes a wet water spraying system. At the same time, the hydraulic alarm bell sends out a bitter alarm. The action of the pressure switch is fed back to the control center to show that the pipeline has been filled with water, and the fire pump is started.
此時管道上安裝閉式灑水噴頭尚未釋放，不會噴水。人尚可主動地經主管人員采取適當行動將火撲滅，避免噴頭動作水漬造成的損失。如果火災控制不住繼續發展，致使閉式噴頭玻璃球動作噴水，水泵自動啟動。
At this time, the closed sprinkler head installed on the pipe has not been released and will not spray water. The person in charge can take appropriate actions to extinguish the fire on his own initiative to avoid the loss caused by water stains caused by the action of the nozzle. If the fire cannot be controlled and continues to develop, the glass ball of the closed sprinkler will act to spray water, and the water pump will start automatically.
提醒：預作用報警閥組如果被使用到了戶外，應該具有寶珠裝置，防止被風砂、雨露以及陽光侵蝕；不應該被使用到有易燃、易爆氣體以及粉塵的環境；預作用報警閥組不適合使用在濕熱帶和干熱帶的環境中；預作用報警閥組應該將管道介質的溫度控制不超過450℃。
Reminder: if the pre action alarm valve group is used outdoors, it should have a jewel device to prevent it from being eroded by wind, sand, rain and sunshine; It shall not be used in the environment with flammable, explosive gas and dust; The pre action alarm valve group is not suitable for use in the humid and dry tropical environment; The pre action alarm valve group shall control the temperature of the pipeline medium to no more than 450 ℃.
預作用報警閥組不適合使用在-20℃以下的環境溫度；預作用報警閥組很容易出現水淹或浸水的情況；預作用報警閥組不適合使用在環境中有放射性物質的情況；對于有鹽霧、霉菌以及潮濕的環境和不適合使用；預作用報警閥組還應該避免劇烈振動和容易發生火災的環境。
The pre action alarm valve group is not suitable for use at an ambient temperature below - 20 ℃; The pre action alarm valve group is easy to be flooded or immersed; The pre action alarm valve group is not suitable for use when there are radioactive substances in the environment; It is not suitable for use in the environment with salt fog, mold and humidity; The pre action alarm valve group shall also avoid violent vibration and fire prone environment.
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