Rescue capsule and regulating method for internal pressure of rescue capsule

Abstract

The invention relates to a rescue capsule and a regulating method for internal pressure of the rescue capsule. The rescue capsule comprises a capsule body and an electrically-controlled pressure regulating valve component, the electrically-controlled pressure regulating valve component comprises a valve body, a valve seat, a valve-type spool, a driving device used for driving the valve-type spool to act, a pressure detection device and a control device, the pressure detection device is used for detecting internal and external pressure of the capsule body or detecting a difference of the internal and external pressure of the capsule body, and the control device is in communication connection with the pressure detection device and used for receiving a pressure signal or a pressure difference signal detected by the pressure detecting device. The control device is in control connection with the driving device, and controls the driving device to act so as to enlarge opening of the valve-type spool when the difference of the internal and external pressure of the capsule body is larger than set maximum pressure difference, or controls the driving device to act so as to reduce opening of the valve-type spool when the difference of the internal and external pressure of the capsule body is smaller than set minimum pressure difference. When used, the rescue capsule adopts electric control, and accordingly the difference of the internal and external pressure of the capsule body can be accurately controlled.

Description

technical field [0001] The invention relates to a rescue chamber and a method for adjusting the internal pressure of the rescue chamber. Background technique [0002] Coal mine refuge chambers or rescue chambers are generally equipped with exhaust valves as pressure regulating devices to ensure a certain slight positive pressure in the chambers or rescue chambers. A traditional exhaust valve, such as an adjustable automatic exhaust check valve disclosed in a Chinese patent with application number 201220641233.6 and authorized announcement number CN 202972060 U, includes a cylindrical valve body, and an air inlet is provided at the front end of the valve body. The rear end is provided with an air outlet, and the valve body is guided to move along the front and rear directions and is equipped with a valve-type valve core. The front end of the valve body is provided with a valve seat for the valve core to be pressed forward to achieve sealing, and the rear end of the valve bod...

AI Technical Summary

Problems solved by technology

The opening and closing of the above-mentioned exhaust valve is controlled by its own spring, the pressure in the cabin will fluctuate at the moment of opening and closing the exhaust valve, and affected by assembly accuracy and static friction, the valve core cannot achieve sensitive action , it is difficult to ensure the stability of the pressure in the cabin

Images