預作用報警閥組安裝要求以及操作原理
來源：http://www.xintli.net/ 日期：2022-08-08
1.安裝要求：
1. Installation requirements:
1)系統(tǒng)主供水信號蝶閥、雨淋報警閥、濕式報警閥等集中垂直安裝在被保護區(qū)附近，且低環(huán)境溫度不低于4攝氏度的室內(nèi)，以免低溫使隔膜腔內(nèi)的存水冰凍而導致系統(tǒng)失靈。
1) The main water supply signal butterfly valve, deluge alarm valve, wet alarm valve, etc. of the system are centrally and vertically installed in the room near the protected area and the low ambient temperature is not lower than 4 ° C, so as to avoid the system failure caused by the freezing of the water stored in the diaphragm cavity.
2)在隔膜雨淋報警閥組的水源側(cè)管道法蘭和隔膜雨淋報警閥系統(tǒng)側(cè)出水口處分別放人密封墊，擰緊法蘭螺栓，再與系統(tǒng)管網(wǎng)連接。在濕式報警閥的平直管段上開孔接管，與由低氣壓開關(guān)、空氣壓縮機、電接點壓力表等空氣維持裝置相連接。
2) Place gaskets on the water source side pipe flange of the diaphragm deluge alarm valve group and the water outlet of the diaphragm deluge alarm valve system side, tighten the flange bolts, and then connect with the system pipe network. Open a hole on the straight pipe section of the wet alarm valve and connect it with the air maintenance device such as low pressure switch, air compressor and electric contact pressure gauge.
3)系統(tǒng)放水閥、電磁閥、手動快開閥、、補水漏斗等部位設(shè)置排水設(shè)施，排水設(shè)施能夠?qū)⑾到y(tǒng)出水排人排水管道。
3) Drainage facilities shall be set at the drain valve, solenoid valve, manual quick opening valve, water replenishing funnel and other parts of the system, which can discharge the system water into the drainage pipeline.
4)將雨淋報警閥上的壓力開關(guān)、電磁閥、信號蝶閥引出線以及空氣維持裝亶上的低氣壓開關(guān)、電接點壓力表引出線分別與消防控制中心控制線路相連接。
4) Connect the outgoing lines of pressure switch, solenoid valve and signal butterfly valve on the deluge alarm valve, low pressure switch and electric contact pressure gauge on the air maintenance device with the control line of the fire control center.
5)按照濕式自動噴水滅火系統(tǒng)的要求進行安裝。
5) Install according to the requirements of wet automatic sprinkler system.
6）預作用裝置安裝完畢后，將雨淋報警閥組的防復位手輪轉(zhuǎn)防復位鎖止位置，手輪上紅點對準標牌上的鎖止位置，使系統(tǒng)處于伺應狀態(tài)。
6) After the pre action device is installed, turn the anti reset handwheel of the deluge alarm valve group to the anti reset locking position, and align the red dot on the handwheel with the locking position on the label, so that the system is in the standby state.
2.操作原理：
2. Operating principle:
川消預作用系統(tǒng)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(cè)，濕式報警閥位于系統(tǒng)側(cè)而成為預作用閥組。
The pre action valve of Chuanxiao pre action system is composed of a deluge valve and a wet alarm valve connected in series. The deluge valve is located at the water supply side and the wet alarm valve is located at the system side to form a pre action valve group.
系統(tǒng)由預作用閥、壓力開關(guān)、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(tǒng)作為報警和啟動的裝置。其動作原理：一旦發(fā)生火災，安裝在保護區(qū)感溫感煙火災探測器發(fā)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。
The system is composed of pre action valve, pressure switch, air compressor, air maintenance device, signal butterfly valve, etc. the closed sprinkler is installed, and the common detection system is used as the alarm and startup device. Its action principle: in case of fire, the temperature and smoke fire detector installed in the protection area will send out fire alarm and other signals. The fire alarm controller or fire control center receives the alarm.
信號后發(fā)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(tǒng)側(cè)管網(wǎng)，變成濕式噴水系統(tǒng)，同時發(fā)出報苦，壓力開關(guān)動作反饋給控制中心顯示管路已充水，并啟動消防泵。此時管道上安裝閉式灑水噴頭尚未釋放，不會噴水。
After the signal is sent, the command is given 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 spray system. Meanwhile, the alarm is sent. The action of the pressure switch is fed back to the control center to show that the pipeline has been filled with water and start the fire pump. At this time, the closed sprinkler installed on the pipeline has not been released and will not spray water.
人尚可主動地經(jīng)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(xù)發(fā)展，致使閉式噴頭玻璃球動作噴水，水泵自動啟動。火災撲滅后，應將電磁閥關(guān)閉,使雨淋閥關(guān)閉,并排除管中的水使系統(tǒng)充氣，恢復準工作狀態(tài)。
People can take the initiative to put out the fire through appropriate actions taken by the competent personnel to avoid the loss caused by water stains caused by nozzle action. If the fire cannot be controlled and continues to develop, the glass ball of the closed sprinkler acts to spray water, and the water pump starts automatically. After the fire is extinguished, the solenoid valve shall be closed to close the deluge valve, and the water in the pipe shall be drained to inflate the system and restore the quasi working state.
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