| |
工作原理：Operation principle
6.1．当储罐内压力与大气压力平衡时，呼吸阀呼出阀瓣与呼出口阀座严密配合，吸入阀瓣与吸入口阀座严密配合。
When the pressure in the tank is balanced with the atmospheric pressure, the exhalation valve flap of the respiration valve is closely cooperate with the exhalation outlet valve seat, the inhalation valve flap is closely cooperate with the inhalation outlet valve seat.
6.2．当储罐内压力超过大气压力值（即产生过高正压）时，罐内高压直接作用于呼出口阀瓣下方，并克服阀瓣重力以及作用于阀瓣上的外气压力，从而打开呼出口阀瓣由A通道排出罐内过高气压，使罐内压力与大气压力保持平衡。
When the pressure in the tank exceeds the atmospheric pressure (that is over high positive pressure), the high pressure in the tank directly act on the bottom of the valve flap of the exhalation outlet, and overcome the gravity of the valve flap, as well as external pressure acted on the valve flap, so as to open valve flap of the exhalation outlet, to discharge the over high pressure in the tank through channel A, to make the pressure in the tank is balanced with the atmospheric pressure,
6.3．当储罐内压力低于大气压值（即产生过低负压）时，大气压通过吸气通道B进入并直接作用于吸入口阀瓣下方，并克服阀瓣重力以及作用于阀瓣上方的罐内压力，从而打开吸入口阀瓣向储罐内补充压力，使罐内压力与大气压力保持平衡。
When the pressure in the tank is lower than the atmospheric pressure (that is over low negative pressure), the atmospheric pressure directly enters through channel B and directly act on the bottom of the valve flap of the inhalation inlet, and overcome the gravity of the valve flap, as well as pressure in the tank at the top of the valve flap, so as to open valve flap of the inhalation inlet, to complement pressure into the tank, to make the pressure in the tank is balanced with the atmospheric pressure,
6.4．当发生火警时，火源有可能通过进入口向储罐内漫延，当火焰通过呼吸阀内阻火芯层的狭小孔隙时，由于器壁效应，波纹板吸收大量热源，使热损失突然增大，从而使火焰熄灭。
When the fire breaks out, fire source may spread to the storage tank through the inlet, when the flame passes the small pore of the flame-resistant core layer in the respiration valve, due to the wall effect, the corrugating plate absorbs a great deal of heat, so as to increase heat loss at once, so that the flame is extinguished.
|
| |
|
|
|
