Several Methods of Correct Selection of Electric Control Valve
Release time:
2024-10-22 16:18
Water supply valve main and auxiliary boiler water supply valve, composite water supply control valve control requirements: control boiler water supply, adhere to the boiler liquid level and steam flow. Working condition requirements: when the boiler is claimed, the valve pressure difference can reach 100-300kg, the flow rate is small, the pressure difference is small during normal operation, the flow rate is large, and the adjustable ratio of flow rate is WCB/WC9. regarding the demand of the claimed valve in the double valve system for cavitation resistance and class v closing grade, the composite water feed valve needs to use characteristic valve trim to satisfy the demand of the boiler and normal operation. General valve selection for the shortcomings off. Boiler feed pump small flow circulation valve control requirements.
Make the boiler feed water pump safe proposition and operation, eliminate the flow is too small, the temperature rise, water severe cavitation caused by the pump damage. Working conditions: the pressure drop is 160-350kg, which is a valve with large pressure difference in the power station system, and the flow rate is generally 30% of the normal flow rate. Valve requirements: anti-cavitation, anti-blocking layout, Class V sealing grade. The pump advocates continuous operation with the valve during continuous operation. The pump normally advocates closing the valve next time. The valve is generally opened for defects.
High/low heater trap water supply heater drain, condensate heater drain control requirements: control the direction of condensate in the heater, timely discharge of condensate, that is, high water level discharge, normal water level drain. Working conditions: the medium is full of water, the control valve pressure difference between the heater is generally 6-30kg, whether the first level trap is directly connected to the condenser or deaerator. Valve requirements: anti-flash flushing, V or VI sealing grade, the valve is generally open for shortcomings.
2022-12-19
Wuhan Weituo Fluid Control Equipment Co., Ltd
Address: 1706, Building D, Wuhan Living Room, No.8 Hongtu Avenue, Dongxihu District, Wuhan City
Telephone:0086-18942929031 0086-18571829295
Landline:0086-027-83612831
Fax: 0086-027-83612830
E-mail:watosong@watovalve.com
Website:www.watovalve.com
