| 摘要 |
PURPOSE: A safety valve for detecting pressure drop is provided to prevent safety accidents due to air pressure drop in an air nozzle when cleaning a coke oven riser pipe. CONSTITUTION: A safety valve(10) for detecting pressure drop comprises a valve body(100), a pressure plate(200), a pressure plate support(210), an elastic member(220), and a pressure drop detecting part(300). The pressure plate support is installed inside the valve body and supports the pressure plate. The elastic member connects the pressure plate and the pressure plate support and has constant elastic force. At least one pressure drop detecting part is mounted on the top of the pressure plate to detect whether or not air pressure entered into the valve body is dropped. |
