Electric pressure regulating pneumatic valve in the system, the application of chlorine gas pressure

electrolyzer chlorine gas export manager back to manually adjust the chlorine gas flow for the pressure stable chlorine gas inlet pressure control system, the original manual control system adopts the DN pneumatic valve manual coarse adjustment chlorine gas export manager back flow, the lagging behind of workers manual operation, the pressure can only control in - ~ Pa, pressure fluctuation caused by the big, not easy to control, and operation personnel must observe the pressure value, fatigue, pressure regulation influenced by artificial factors. Chlorine gas pressure fluctuations, lead to cell level qualified rate is low, can only achieve %, is one of the reasons that influence the electrolyte concentration; Also easy to cause and chlorine to produce positive pressure in electrolytic cell, spillover in chlorine gas, operating environment; Low negative pressure caused by chlorine gas purity is reduced, after years of practice data summary, chlorine gas purity in average. %; Because be manual coarse adjustment, so the frequency is high, the labor intensity of workers. In order to solve the above problems, stabilize process parameters, so the automatic regulation system control of chlorine gas export manager back flow, pressure stability, ensure the quality of chlorine products.
the automatic adjustment is to use electric diaphragm regulating pneumatic valve, its advantage is low cost, easy to use, energy saving, corrosion resistance; Disadvantages: electrical lagging, slightly lower sensitivity.
electric regulating pneumatic valve working principle is: the first collected by pressure and chlorine gas pressure signal, the pressure transmitter converts to mA electrical signals to digital pressure gauge, at the same time also to intelligent automatic controller, intelligent regulator after internal PID arithmetic, setting the output to mA electrical signal to the automatic regulating pneumatic valve, pressure balance control system.
manual regulation of pneumatic valve to automatically adjust the pneumatic valve for technical index change: electrolytic tank liquid level qualified rate by % rise to %; Chlorine by purity. % rise to. %; Chlorine gas pressure control by - ~ Pa stability to - ~爸爸。
the automatic regulating pneumatic valve regulating pressure of chlorine gas, high sensitivity, so only in the case of current fluctuation particularly big, only need to be manually adjusted assist chlorine compressor inlet pneumatic valve adjustment, reduce the labor intensity of workers. Also because of the stability of the pressure regulation at the same time, ensure the electrolyser chlorine gas is not easy to spill, to improve the operating environment of the workers.