Safety valve

The hydraulic drive safety valve mainly includes two parts: safety valve preparation valve and hydraulic actuator, which is the executive part of the well safety system. The over-high pressure oil enters the cavity of the upper part of the drive, thereby compressing the spring in the lower part to open the valve, and when the wellhead device is subjected to dangerous pressure, the signal transmitted by the sensor by the control mechanism removes the pressure of the cylinder, and the process equipment is safe and remote control is realized.