Intelligent compressed air flow control device

Abstract

The invention relates to the field of energy conservation and emission reduction of an air supply system, in particular to an intelligent compressed air flow control device. The device comprises an intelligent control instrument, an upstream pressure sensor, a downstream pressure sensor, a valve positioner, a pneumatic operation mechanism and a linear pneumatic regulating valve, wherein the intelligent control instrument receives signals from the upstream pressure sensor and the downstream pressure sensor, takes an upstream pressure signal as a pressure display and fault judgment basis, compares a downstream pressure signal with a given target pressure signal, and outputs an appropriate pressure signal according to a comparison result to control the valve positioner, and the pneumatic operation mechanism further controls the opening of the linear pneumatic regulating valve until given pressure is equal to downstream pressure, wherein the given target pressure is set on site. The device is used for realizing intelligent air supply flow control and fault judgment and alarm, and has a good energy-saving effect.

Description

technical field [0001] The invention relates to the field of energy saving and emission reduction of an air supply system, in particular to an intelligent compressed air flow control device. Background technique [0002] Compressed air experts at home and abroad suggest that the air supply equipment should be provided with the required air supply pressure. Any air supply pressure higher than the equipment required will cause a waste of air volume. They waste the air volume caused by the pressure difference higher than the actual pressure. , defined as false gas consumption. [0003] According to the survey, the air supply pressure of most compressed air systems is higher than the demand pressure of the equipment, and there is a certain gap. In order to ensure the normal operation of the air-consuming equipment, the power department has left a certain margin on the air supply pressure , At the same time, with the change of gas consumption, the gas supply pressure of the syst...

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Problems solved by technology

[0003] According to the survey, the air supply pressure of most compressed air systems is higher than the demand pressure of the equipment, and there is a certain gap. In order to ensure the normal operation of the air-consuming equipment, the power department has left a certain margin on the air supply pressure At the same time, with the change of gas consumption, the gas supply pressure of the system will also change, and it is necessary to increase the gas supply pressure to prevent the gas supply pressure from being too low when the flow rate is large, which will affect the use of gas equipment

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