A valve for fluid identification and control

Abstract

The invention provides a valve for recognizing and controlling fluid. According to the valve, a sensor for recognizing the fluid state is arranged on a medium inlet of a valve body, signals received by the sensor are sent to a controller, and the controller controls an executing mechanism to achieve opening or closing of a runner. According to the valve, a fluid recognizing function and an openingand closing control function are combined, so that the valve has the function of accurately recognizing the fluid state and fast controlling opening and closing. A first medium outlet and a second medium outlet are formed in a valve outlet of the valve body, after the sensor recognizes the fluid state, the controller controls the executing mechanism to enable liquid and gas in the fluid to flow to different medium outlets, fast separation of the gas and the liquid is achieved, and impacts of slug flow on pipelines and equipment are eliminated or reduced. The number of disconnected pipelines and needed cables is reduced, and the technical problem that improvement of old equipment and old process is frequently limited by the position of a connector and the cable capacity is solved.

Description

technical field [0001] The invention belongs to a control system, in particular to a valve for fluid identification and control. Background technique [0002] In industrial automation production, it is often necessary to identify and control the medium flowing in the pipeline, especially switch control. For example, the inlet of a natural gas compressor should continuously input gas. When liquid enters, it should be shut off in time, otherwise the incompressibility of the liquid will cause damage to the machine; in the heating coil of a coal-fired boiler or some chemical reactors, it should Filled with a continuous flow of liquid, when there is gas stringing in, it will cause damage to the heating coil or reaction equipment, or even a disaster. [0003] In addition, gas and liquid slug flow exists in the pipelines of many practical and commonly used equipment, which need to be separated and eliminated quickly. For example, long-distance pipelines in offshore or onshore oil...

AI Technical Summary

Problems solved by technology

For example, long-distance pipelines in offshore or onshore oil fields, due to the existence of elevation differences, are prone to gas and liquid slug flow, resulting in strong vibrations that threaten production safety; air-conditioning refrigerant pipes or boiler heat exchange coils are also prone to Slugging, resulting in a reduction in equipment efficiency

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