A method and system for active control of an exhaust valve based on a high-frequency pressure signal
A pressure signal and active control technology, applied to valve details, valve devices, engine components, etc., can solve the problems of exhaust valve loss of function, inconvenient daily maintenance, etc.
Inactive Publication Date: 2018-02-06
HARBIN INST OF TECH
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Problems solved by technology
This working principle requires the air in the valve body to accumulate to a certain amount before the exhaust valve can work. At this time, there is a large amount of gas near the exhaust valve; moreover, due to the particularity of the installation position of the exhaust valve, it is inconvenient for daily maintenance. Many exhaust valves have lost their proper functions in actual engineering
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[0029] The present invention will be further described below in conjunction with specific examples, but the present invention is not limited by the examples.
[0030] The principle of the active control method and system for the exhaust valve based on the high-frequency pressure signal proposed by the present invention is that the air in the water pipeline generally stays and accumulates in the descending pipeline due to buoyancy to form an air bag, so it is installed near the exhaust valve in the descending pipeline section. A high-frequency pressure sensor, regularly transmits the collected pressure signal to the data processing center 4 through the wireless network, and the data processing center 4 analyzes the pressure signal to obtain the gas content in the pipeline under the pressure signal state, if the result shows that the gas in the pipeline When the gas content has formed an air bag, the data processing center 4 sends a signal to the exhaust valve to instruct it to o...
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The invention provides a vent valve active control method and system based on a high-frequency pressure signal, and belongs to the technical field of vent valve control.The control method includes the steps of conducting feature extraction on information corresponding to the collected high-frequency pressure signal, classifying the pressure signal subjected to feature extraction through a trained support vector machine classification model, judging whether gas bags exist in a water conveying descending pipeline or not according to the classification result, and starting the exhaust function.The active control system comprises an automatic gas feed and discharge valve, a high-frequency pressure sensor, a wireless transmission network and a data processing center.The automatic gas feed and discharge valve 1 is fixedly installed on a water conveying pipeline.The high-frequency pressure sensor is fixedly installed on the water conveying descending pipeline.The data processing center controls the automatic gas feed and discharge valve in real time through the wireless transmission network.The high-frequency pressure sensor conducts information transmission with the data processing center through the wireless transmission network.The method and the system have the advantages of being high in monitoring precision, high in exhaust efficiency, and the like.
Description
technical field [0001] The invention relates to an active control method and system for an exhaust valve based on a high-frequency pressure signal, and belongs to the technical field of exhaust valve control. Background technique [0002] At present, the working principle of the automatic intake and exhaust valves commonly used on water pipelines is that when the air in the water pipeline gathers on the upper part of the exhaust valve, the accumulation of air bubbles in the valve will make the floating ball (tube) follow the water level. Descending, thereby opening the exhaust piston, after the gas is exhausted, the water level rises, and the float (tube) rises accordingly, closing the exhaust piston. This working principle requires the air in the valve body to accumulate to a certain amount before the exhaust valve can work. At this time, there is a large amount of gas near the exhaust valve; moreover, due to the particularity of the installation position of the exhaust val...
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IPC IPC(8): F16K31/02
CPCF16K31/02
Inventor 朱炎于海良袁一星吴晨光石振锋
Owner HARBIN INST OF TECH