Intelligent compressed air flow control device
A flow control device, compressed air technology, applied in the direction of flow control using electrical devices, etc.
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[0024] see figure 1 , the invention discloses an intelligent compressed air flow control device. As shown in the figure: it includes an intelligent controller C0, an upstream pressure sensor PS1, a downstream pressure sensor PS2, a valve positioner P01, a pneumatic operating mechanism E1 and a linear pneumatic control valve V1; the intelligent controller respectively receives the upstream pressure sensor and The downstream pressure sensor signal, and the upstream pressure signal is used as the basis for pressure display and fault judgment, the downstream pressure signal is compared with the given target pressure signal, and an appropriate pressure signal is output according to the comparison result to control the valve positioner, and further through the pneumatic operating mechanism Control the opening of the linear pneumatic regulating valve until the downstream pressure is equal to the given target pressure. The given target pressure is set on site (the setting is realized ...
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