Applicable condition analysis of self-reliance type pneumatic control valve

Self-reliance type pneumatic control valve rely on within the medium flows through the valve's own pressure, temperature as an energy drive valve work automatically, do not need the power converter and secondary instrument is also called the self control valve. Temperature difference self-reliance type pneumatic control valve in the no. 3 blast furnace in panzhihua iron cooling stave system test after the success, is applied to the no. 1 blast furnace in panzhihua iron copper cooling stave system, in order to realize the adjustment of copper cooling stave cooling water protection of cooling stave, improve the utilization rate of cooling water cooling capacity. At present, no. 1 blast furnace copper cooling wall temperature difference self-reliance type pneumatic - valve operating normally, has achieved initial results. Self-reliance type pneumatic control valve use valve the output feedback signals pressure differential temperature through the pipe to the actuator driven disc change of valve opening to achieve the purpose of regulating pressure flow temperature. Application practice proved that in a closed water circulation system ( Air conditioning chilled water systems such as hot water heating system) The proper use of the valve, the flow distribution can be easily implemented system, can realize the dynamic equilibrium of system; Can greatly simplify the system debugging, stable work state of pump, etc.