电动压差旁通阀
ELECTRIC DIFFERENTIAL PRESSURE BYPASS VALVE
性能特点
● 功耗低、输出力大、噪音小。
● 选用永磁同步电机，并带有磁滞离合机构，具有可靠的自我保护功能。
● 控制信号：采用浮点型控制。
● 阀体有铸铁、铸钢、不锈钢多种材质可供选择，以适合不同工作介质及温度的要求。
● 阀体有螺纹连接和法兰连接两种，安装方便，其构造符合IEC国际标准。
Performance characteristics
● Low power consumption, large output force, low noise.
● Permanent magnet synchronous motor, with hysteresis clutch mechanism, with reliable self-protection function.
● Control signal: floating-point control.
● The valve body has cast iron, cast steel, stainless steel to choose from a variety of materials to meet the requirements of different working media and temperature.
● The valve body has two kinds of threaded connection and flange connection, easy to install, and its structure meets IEC international standards.
用途
电动压差旁通阀广泛应用于空调、制冷、采暖等楼宇自动控制系统，适用于冷水、热水、蒸汽以及其它非腐蚀性介质等介质的流量调节。同时，也适用于化工、石油、冶金、电力、轻工等行业的生产过程自动控制系统。电动压差旁通阀与电动执行机构配合使用，可以接受各种控制器输出的标准控制信号，在自动控制系统中，控制温度、湿度、压力、流量等参数。电动压差旁通阀具有控制精度高、安装方便、运行可靠等优点。
use
Electric differential bypass valve is widely used in air conditioning, refrigeration, heating and other building automatic control system, suitable for cold water, hot water, steam and other non-corrosive media flow regulation. At the same time, it is also suitable for chemical, petroleum, metallurgy, electric power, light industry and other industries of the production process automatic control system. The electric differential pressure bypass valve is used in conjunction with the electric actuator, and can accept the standard control signals output by various controllers. In the automatic control system, the temperature, humidity, pressure, flow and other parameters are controlled. The electric differential pressure bypass valve has the advantages of high control precision, easy installation and reliable operation.
压差与流量关系
Relationship between pressure difference and flow rate
△P:阀门全开时的压差(单位：kPa)
V:在压差为△P时的额定流量(单位：m³/h)
Kvs:在控制阀全开，阀两端压差为100kPa,介质密度为1g/cm³时，流经控制阀的介质流量数。
△P: Pressure difference when the valve is fully opened (unit: kPa)
V: Rated flow rate at pressure difference of △P (unit: m³/h)
Kvs: The number of media flow through the control valve when the control valve is fully open, the pressure difference between the two ends of the valve is 100kPa, and the medium density is 1g/cm³.
技术参数
Technical parameter
注：低温使用时应避免阀杆和衬垫有结冰现象。Kvs一是指温度介于5℃和40之间的水，流经额定压力降为100Kpa阀门流量，单位立方米/小时
Note: Freezing of stem and gasket should be avoided when used at low temperature. Kvs 1 refers to water with a temperature between 5 ° C and 40, flowing through a valve with a rated pressure drop of 100 kpa, per cubic meter/hour
压差控制阀接线图
Differential pressure control valve wiring diagram
电动压差旁通阀应用
压差控制器通常应用于水系统，用于控制供水管与回水管之间的压差，控制器SPDT浮动动作接通触点后，令马达驱动器操作阀门。其原理把阀门安装在系统是泵附件的旁通管路中，当系统压差增大而超过控制器设定值时，阀门则进而开大，更多的水率转向流经旁通阀，从而使系统压差减少。压差的减少导致阀门开始关小以及系统压差的增加。
Electric differential bypass valve applications
The differential pressure controller is commonly used in water systems to control the differential pressure between the supply pipe and the return pipe. The SPDT floating action of the controller makes the contact and causes the motor drive to operate the valve. The principle of the valve installed in the system is the pump accessories bypass pipeline, when the system pressure difference increases and exceeds the controller set value, the valve is then opened wider, more water rate to flow through the bypass valve, so that the system pressure difference is reduced. The reduction in differential pressure causes the valve to start to turn down and the system to increase differential pressure.
电动压差旁通阀安装示意图
Electric differential bypass valve installation diagram
注意事项
1、 按阀体流体方向安装：A进水AB出水。
2、 安装阀前应保证管道清洁，没有焊接时留下的气化皮。
3、 管道与阀体相连接时必须完全吻合，并不受振动。
4、 用高温流体作业的工厂，安装时应使用伸缩接头，以避免管道膨胀，挤压阀体。
5、 驱动器垂直安装在阀体上时，避免驱动器装在阀的下面。
6、 需留余足够的空间以便日常维护时，从阀体上拆卸驱动器。
7、 阀不能安装在易爆及环境温度高于50C和低于-5℃的环境中，也不能置于蒸汽、水力喷射或滴漏处。
8、 在长时间无使用阀门时，阀门处水必须泄掉，清除杂质，阀门处于打开状态。
9、 在使用时管道必须一个月或半个多月清洗过滤器和阀门内部杂质，防止卡死。
10、若阀门长时间打开状态，必须定期关闭或打开运转，防止卡死。
Matters needing attention
1, according to the valve body fluid direction installation: A water AB water.
2. Before installing the valve, ensure that the pipeline is clean and there is no gasification skin left during welding.
3, the pipe and the valve body must be completely connected, not subject to vibration.
4, the factory with high temperature fluid operation, installation should use expansion joints to avoid pipe expansion, squeeze the valve body.
5. When the driver is vertically installed on the valve body, avoid the driver being installed under the valve.
6, need to leave enough space for routine maintenance, remove the driver from the valve body.
7, the valve can not be installed in explosive and ambient temperature above 50C and below -5℃ environment, can not be placed in steam, hydraulic injection or drip.
8. When the valve is not used for a long time, the water at the valve must be drained, the impurities removed, and the valve is open.
9, in the use of the pipeline must be a month or more than half a month to clean the filter and valve internal impurities, to prevent stuck.
10, if the valve is open for a long time, it must be closed or opened regularly to prevent stuck.