Energy-saving control valve low energy consumption development direction

Energy saving to reduce energy consumption and improve energy efficiency is a development direction of the control valve. There are mainly the following development direction.

1. The use of low pressure drop ratio of the control valve. Make the control valve in the whole system pressure drop in the proportion of the reduction, so as to reduce energy consumption, therefore, the design of low-pressure drop ratio of the control valve is one of the development direction, another development direction is the use of low impedance control valve. For example, the use of butterfly valves, eccentric rotary valves and so on.

2, the use of self-operated control valve: for example, directly using the pressure of the medium after the valve to form a self-operated control system, with the energy of the controlled medium to achieve pressure control after the valve.

3, the use of electric actuator control valve. Pneumatic actuator in the whole process of regulating valve operation requires a certain amount of air pressure, although the consumption of small amplifiers can be used, but the accumulation of time, gas consumption is still huge. The use of electric actuators, in changing the opening of the control valve, the need for power supply, in order to achieve the desired opening can no longer power supply, therefore, from the energy-saving point of view, electric actuators than pneumatic actuators have obvious energy-saving advantages.

4, the use of piezoelectric control valve. In the intelligent electrical valve positioner using piezoelectric valves, only when the output signal increases the consumption of gas.

5, the use of spool valve with balanced structure, reduce the actuator thrust or thrust torque, reduce the membrane head gas chamber, reduce energy needs.

6、Adopt frequency conversion speed control technology instead of regulating valve. The application of high pressure reduction ratio, if the energy consumption is very large, can be used in frequency conversion speed control technology, the use of frequency converter to change the rotational speed of the relevant operating equipment, reduce energy consumption.

Protect the environment environmental pollution has become a public hazard, control valve pollution of the environment is mainly control valve noise and control valve leakage. Among them, the noise of the control valve on the environmental pollution is very serious.

1, reduce the noise of the control valve. Development of a variety of methods to reduce the noise of the control valve, including from the design of the control valve flow path to the design of the valve valve parts, from the analysis of the noise source to reduce the noise of the measures and so on. The main design of noise-reducing regulating valve and noise-reducing regulating valve valve parts; reasonable distribution of pressure drop, the use of external noise reduction measures, for example, increase isolation, the use of mufflers and so on.

2, reduce the atmospheric pollution of the control valve. The atmospheric pollution of the control valve refers to the control valve ‘run’, ‘bubble’, “drip”, ‘leakage’, these leaks These leaks not only cause waste of materials or products, but also cause pollution to the atmospheric environment, and sometimes, also cause casualties or equipment explosion and other accidents. Therefore, the development of regulating valve packing structure and packing type, the development of regulating valve sealing will be an important research topic of regulating valve in the future.

Computer science, control theory and automation instrumentation and other high-tech scientific and technological development to promote the development of control valves, for example, fieldbus control valves and the development of intelligent valve positioner, digital communications in the implementation of the control valve. The development of control valves also promotes the development of other science and technology, for example, the study of corrosion-resistant materials, the study of weakening and noise reduction methods, the study of fluid dynamics and so on. With the development of fieldbus technology, the control valve will also be open, intelligent and more reliable, it will be with other industrial automation instrumentation and computer control devices, so that the industrial production process control function is more complete, the control of higher precision, the control of the effect is more obvious, and for the modernisation of China to play a more important role.