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A method for accurately detecting the switching speed of a high-frequency fast-cut valve in the vpsa process

A valve switch and high-frequency technology, which is applied in the direction of valve devices, mechanical equipment, engine components, etc., can solve the problems of high-frequency fast-cut valve asynchrony, jamming, etc., to achieve efficient switching and avoid asynchronous effects

Active Publication Date: 2020-03-17
北京百达先锋气体科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To avoid the problems of out-of-synchronization, jamming and limit adjustment failure of existing high-frequency quick-cut valves

Method used

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  • A method for accurately detecting the switching speed of a high-frequency fast-cut valve in the vpsa process
  • A method for accurately detecting the switching speed of a high-frequency fast-cut valve in the vpsa process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In the actual operation process, an induction iron block is fixed at the end of the part where the output shaft of the actuator is connected to the valve stem, and two 24V DC two-wire electromagnetic proximity switches are vertically installed near the output shaft of the actuator shell to serve as the opening valve. Position, closing valve position detection device. After the installation is completed, the preset time should be set according to the actual VPSA process system. Different VPSA process systems need to set different preset times. Generally, the preset time range is between 700 and 1100 milliseconds. between.

[0029] When measuring the speed of opening the valve position, the high-frequency fast-cut valve is in the closed position, and the closed valve position feedback switch is in the closed state. When the operator controls to open the high-frequency fast-cut valve, the normally open node of the valve position feedback switch in the PLC control program ...

Embodiment 2

[0031] In the actual operation process, an induction iron block is fixed at the end of the part where the output shaft of the actuator is connected to the valve stem, and two 24V DC two-wire electromagnetic proximity switches are vertically installed near the output shaft of the actuator shell to serve as the opening valve. Position, closing valve position detection device. After the installation is completed, the preset time should be set according to the actual VPSA process system. Different VPSA process systems need to set different preset times. Generally, the preset time range is between 700 and 1100 milliseconds. between.

[0032] When measuring the speed of opening the valve position, the high-frequency fast-cut valve is in the closed position, and the closed valve position feedback switch is in the closed state. When the operator controls to open the high-frequency fast-cut valve, the normally open node of the valve position feedback switch in the PLC control program ...

Embodiment 3

[0034] In the actual operation process, an induction iron block is fixed at the end of the part where the output shaft of the actuator is connected to the valve stem, and two 24V DC two-wire electromagnetic proximity switches are vertically installed near the output shaft of the actuator shell to serve as the opening valve. Position, closing valve position detection device. After the installation is completed, the preset time should be set according to the actual VPSA process system. Different VPSA process systems need to set different preset times. Generally, the preset time range is between 700 and 1100 milliseconds. between.

[0035]When measuring the speed of closing the valve position, the high-frequency fast-cut valve is in the open position, and the open valve position feedback switch is in the closed state. When the operator controls to close the high-frequency fast-cut valve, the normally closed node of the valve position feedback switch in the PLC control program is...

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PUM

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Abstract

The invention discloses a precise switch speed detection method for a high-frequency fast-switching valve in a VPSA technology. The method comprises the steps that a detection device for the opened valve position and the closed valve position is installed on a high-frequency fast-switching valve execution mechanism; the preset time is set; the transmission time for judging valve position signals is measured; and the speed for adjusting the high-frequency fast-switching valve is controlled after early warning. Through precise detection early warning, the desynchronizing, jamming and limiting adjusting fault problems of the high-frequency fast-switching valve are effectively avoided, and efficient switching of the high-frequency fast-switching valve in the VPSA technology is guaranteed.

Description

technical field [0001] The invention relates to the technical field of high-frequency fast-cut valves, in particular to a method for accurately detecting the switching speed of a high-frequency fast-cut valve in a VPSA process. Background technique [0002] The current VPSA production process generally uses high-frequency switching valves for fluid switching in gas pipelines. In the prior art, out-of-synchronization, jamming, and limit adjustment faults of the high-frequency quick-cut valve are frequent faults, which will affect the continuity and reliability of the automatic production of the VPSA system. The main reason why the fault is difficult to solve is the lack of accurate monitoring and early warning of the speed and time of the fast-cut valve. The main reasons are: the on-site valve lacks a perfect and reliable valve position detection device; it is unable to warn of equipment abnormalities in advance; the PLC software program design is insufficient. [0003] Onl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K37/00
CPCF16K37/0083
Inventor 张建凌国献
Owner 北京百达先锋气体科技有限公司