The Internet of Things(IoT)flow type balance valve was proposed to solve the problem of time lag in the thermal balance adjustment at the user-end in the heating industry.By simulating the change of inlet and outlet pressure of DN100 IoT flow type balance valve with various valve cores(W,V and O type)at different openings,the flow characteristic curve was calculated.At the same time,the flow characteristic curve of W type valve was tested on the test rig in order to study the functional relationships between valve openings,inlet and outlet pressure of the valve,and flow rate,furthermore,the numerical simulation results were validated.The verification results show that in terms of axial distribution characteristics of pressure field and flow adaptability,compared to V type valve and O type valve,the valve with W type valve core has better regulating ability.Under the corresponding flow rate,the opening of the W-type valve is between 45%and 63%,therefore,it has a big regulation range,conforms to the characteristic of equal percentage,and can realize fine regulation at small flow rate and quick regulation at big flow rate.The research results can provide reference for design and application of IoT flow balance valves.
关键词
物联网流量型平衡阀/流场计算/试验/流量特性
Key words
IoT flow balance valve/flow field calculation/test/flow characteristics
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