In order to avoid screw pump is damaged, usually installed in the screw pumpbypass relief valve outlet to a stable outlet pressure, keep the pump running.
为了避免螺杆泵损坏，一般会在螺杆泵出口处安装旁通溢流阀，用以稳定出口压力，保持泵的正常运转。
2
An anti-reverse rotation device prevents the pump from turning backwards which would increase core bypass flow and pump starting current.
止逆装置用于防止泵反转，反转将导致堆芯旁通流量增加和泵启动电流增加。
3
Objective to analyze the cases of off-pump coronary artery bypass (OPCAB) and sum up the experience in postoperative treatment.