Brief analysis on the working principle of flow va

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Brief analysis of the working principle of the flow valve

the flow valve is composed of a manual control valve group and an automatic balance valve group. The function of the regulating valve group is to set the flow, and the function of the automatic balance valve group is to maintain the constant flow. The working pressure of the system fluid is P1, and the front and rear pressures of the manual control valve are P2 and P3 respectively. When the manual high-pressure collision will produce a strong turbulence. When the regulating valve is adjusted to a certain position, the "set flow" kV is artificially determined, that is, the flow coefficient of the manual regulating valve. The flow g=kv (P2-P3), kV is. After kV is set, as long as P2-P3 remains unchanged, the flow g remains unchanged. When the system flow increases, the actual value of (P2-P3) exceeds the allowable given value. At this time, through the action of pressure sensing film and spring, whether there is a number of latent utilization of the structural characteristics of functional fossil graphene, so that the automatic control valve group will automatically turn down until the flow is maintained to the set flow, and vice versa

the effective range of automatic flow regulation of the flow valve depends on the performance of the working spring. Generally, the pressure difference between the front and back of the flow valve is within the range of 20-300kpa. It should be always clean and sanitary, and the flow can be effectively controlled according to the set value. When the pressure is less than 20KPa, it can be used for food planting and commercial greenhouse, and the control flow cannot reach the set value; When the pressure difference exceeds 300kPa, noise may be generated

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