Energy-saving regulating valve Low energy consumption Development direction

Summary: Energy saving to reduce energy consumption, improve energy efficiency is a development direction of the control valve. There are mainly the following development directions. 1. The use of low pressure drop ratio of the control valve. The proportion of the control valve in the entire system pressure drop is reduced, thereby reducing energy consumption. Therefore, the design of low pressure drop ratio of the control valve is one of the development directions, and the other development direction is the use of low impedance control valve. For example, a butterfly valve, an eccentric rotary valve, and the like are used. 2, the use of self-regulating valve: for example, the direct use of the pressure of the medium after the valve to form a self-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 actuators need to have a certain pressure during the operation of the entire control valve. Although small consumption amplifiers can be used, the gas consumption is still huge over time. The use of electric actuators, when changing the opening of the regulating valve, power supply is required, and power supply can no longer be supplied when the required opening is reached. Therefore, from the perspective of energy saving, electric actuators have obvious energy-saving advantages over pneumatic actuators.

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

1. The use of low pressure drop ratio of the control valve. The proportion of the control valve in the entire system pressure drop is reduced, thereby reducing energy consumption. Therefore, the design of low pressure drop ratio of the control valve is one of the development directions, and the other development direction is the use of low impedance control valve. For example, a butterfly valve, an eccentric rotary valve, and the like are used.

2, the use of self-regulating valve: for example, the direct use of the pressure of the medium after the valve to form a self-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 actuators need to have a certain pressure during the operation of the entire control valve. Although small consumption amplifiers can be used, the gas consumption is still huge over time. The use of electric actuators, when changing the opening of the regulating valve, power supply is required, and power supply can no longer be supplied when the required opening is reached. Therefore, from the perspective of energy saving, electric actuators have obvious energy-saving advantages over pneumatic actuators.

4. Adopt piezoelectric regulating valve. The piezoelectric valve is used in the intelligent electric valve positioner, and the gas source is consumed only when the output signal increases.

5. The valve core with balanced structure is adopted to reduce the thrust or push torque of the actuator, reduce the air chamber of the membrane head and reduce the energy demand.

6, the use of frequency control technology instead of regulating valve. For the application of high voltage drop ratio, if the energy consumption is very large, the frequency conversion speed control technology can be adopted, and the frequency converter can be used to change the speed of the relevant operating equipment to reduce energy consumption.

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

1. Reduce the noise of the regulating valve. Various methods to reduce the noise of the control valve are developed, including the design of the control valve flow path to the design of the control valve trim, the analysis of the noise source to the measures to reduce the noise. The main design of noise reduction control valve and noise reduction control valve valve trim; reasonable distribution of pressure drop, the use of external noise reduction measures, such as increasing isolation, the use of silencers.

2. Reduce the air pollution of the regulating valve. Control valve of the air pollution refers to the control valve "run", "take", "drop", "leak", these leaks not only cause waste of materials or products, but also cause pollution to the atmospheric environment, and sometimes, will cause casualties or equipment explosion and other accidents. Therefore, the development of control valve packing structure and packing type, the development of the control valve seal will be an important research topic in the future.

Computer science, control theory and automation instrumentation, such as the development of high-tech science and technology to promote the development of the control valve, for example, the field bus control valve and intelligent valve positioner development, digital communication in the control valve to achieve. The development of the control valve has also promoted the development of other science and technology, such as the study of anti-corrosion materials, the study of methods to weaken and reduce noise, and the study of fluid dynamics. With the development of field bus technology, control valve will also be open, intelligent and more reliable, it will work with other industrial automation instruments and computer control devices together, so that the industrial production process control function is more perfect, the control precision is higher, the control effect is more obvious, and play a more important role in the modernization of our country.