Valve control method integrating dynamic flow balance and energy control and valve

Abstract

The invention relates to an electric valve and a control technology thereof, and aims to provide a valve control method integrating dynamic flow balance and energy control and a valve. A front valve body and a rear valve body of the valve are connected to a differential pressure sensor through pressure guide pipes, and the differential pressure sensor is connected with an intelligent controller through a signal line; a return water temperature sensor is arranged on the valve body on the water inlet side, and the valve further comprises a water supply temperature sensor, the water supply temperature sensor is arranged on a water supply pipeline and is correspondingly connected to the intelligent controller through a signal line; the intelligent controller is connected with an actuator through a signal line, and the actuator is fixed to the valve body through a support and connected to a V-shaped ball valve through a lengthened shaft. According to the valve, the sum of all flow/energy ina longer time can be integrated by using a flow/energy accumulation algorithm, so that the flow/energy in each time period can be controlled according to a target, and the purpose of balance adjustment is achieved; under the same condition, the energy consumption can be reduced by 30% to the maximum extent, and great energy-saving benefits can be obtained; and a control mode can be selected according to actual requirements, and field application is more flexible.

Description

technical field [0001] The invention relates to an electric valve and its control technology, more precisely, it relates to a valve control method and valve integrating dynamic flow balance and energy control. Background technique [0002] The phenomenon of hydraulic imbalance is common in the variable flow water system of central air-conditioning. The imbalance of hydraulic power in the pipe network will easily cause a lot of waste of system energy. Using dynamic balance electric control valve control technology is the best way to solve the balance of complex pipe network hydraulic system. [0003] At present, the spring mechanical self-supporting dynamic balance electric control valve products widely used in the market have obvious disadvantages, such as small flow capacity, small control range of dynamic balance pressure difference, inflexible application, and high initial value of working pressure difference, resulting in low overall energy consumption. high. [0004] B...

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Problems solved by technology

The above two documents systematically introduced the realization method of dynamic flow balance and the realization method of energy metering, and realized the requirements of intelligent control and hydraulic balance of central air-conditioning system valves; however, since the controller does not have the function of internal clock or integrated integral instrument etc., it does not have the function of running flow accumulation and energy accumulation; it is even more impossible to realize the integrated control of dynamic flow balance and energy control of electric valves based on flow accumulation and energy accumulation

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