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Systems and methods for detecting suction valve closure

一种吸入阀、关闭事件的技术，应用在泵测试、泵控制、液体变容式机械等方向，能够解决数据不可靠等问题，达到少干扰、精确数据搜集的效果

Inactive Publication Date: 2007-08-29
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, when an operator of a machine wants to review and interpret historical data on the operation of a compressor, this data has become unreliable because there are periods of irregular operation caused by forced process changes
Stores data historically for compressors and can easily misinterpret data collected when compressors were operating at full capacity

Method used

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  • Systems and methods for detecting suction valve closure
  • Systems and methods for detecting suction valve closure
  • Systems and methods for detecting suction valve closure

Examples

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Embodiment Construction

[0023] The present inventions will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the inventions are shown. Indeed, these inventions may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements. Like reference numerals refer to like elements throughout.

[0024] The present invention is described below with reference to block diagrams and flowchart illustrations of systems, methods, apparatus and computer program products according to embodiments of the invention. It will be understood that each block of the block diagrams and flowchart illustrations, and combinations of blocks in the block diagrams and flowchart illustrations, respectively, can be implemented by computer program instructions. These computer program instructions can be loa...

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PUM

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Abstract

This invention relates generally to the application of an algorithm to calculate a line that intersects a dynamic pressure waveform at two points. These points represent the point immediately prior to the suction valve closure event and the point directly after the event. The distance between each sample on the dynamic pressure waveform and the corresponding sample on the calculated line is determined. The suction valve closure event is identified with the sample located at the furthest distance from the calculated line.

Description

technical field [0001] The present invention relates generally to the detection of the suction valve closing point during the compression stroke of a reciprocating compressor utilizing a stepless unloader capacity control device. Background technique [0002] The process previously used to detect the suction valve closing point in reciprocating compressors is not compatible with newer compressors with installed stepless unloader capacity controls. In fact, prior art systems simply assume that the suction valve is closed at the beginning of the compression stroke. This assumption is generally valid for compressors without stepless unloaders installed, but becomes invalid for compressors with stepless unloaders installed. The stepless unloader capacity control is designed to work in reciprocating compressors in such a way that the suction valve is held open mechanically for part of the compression cycle so that the gas is not compressed but instead forced back into the intak...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B49/03
CPCF04B51/00
Inventor R·S·斯坦斯伯里
Owner GENERAL ELECTRIC CO