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Moving equipment online monitoring alarm limit repeated crossing method

A technology of moving equipment and monitoring points, applied in the direction of alarms, measuring devices, measuring ultrasonic/sonic/infrasonic waves, etc., can solve the problems of deterioration, too simple judgment logic, unable to solve the problems of repeated monitoring parameters crossing the alarm limit and alarm flooding, etc. The effect of avoiding security accidents and flooding alarms

Inactive Publication Date: 2020-11-13
NAVAL UNIV OF ENG PLA
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) The conventional alarm monitoring system is widely used in the monitoring of dynamic equipment, but its judgment logic is too simple to solve the problem of alarm flooding caused by monitoring parameters repeatedly crossing the alarm limit
[0006] (2) At present, there is no on-line monitoring and alarm limit repeated crossing recognition technology for dynamic equipment that has been verified by the actual unit, which can make up for the above-mentioned shortcomings of conventional alarms, timely and accurately judge the operating status of the unit and perform intelligent early warning, and eliminate flood alarms at the same time At the same time, important alarms can be taken into account, so that targeted measures can be taken to avoid further deterioration of the situation

Method used

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  • Moving equipment online monitoring alarm limit repeated crossing method
  • Moving equipment online monitoring alarm limit repeated crossing method
  • Moving equipment online monitoring alarm limit repeated crossing method

Examples

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Effect test

Embodiment 1

[0059] A company's new hydrogen compressor is a reciprocating compressor, which uses an eddy current sensor to monitor the settlement of the piston rod, and draws a trend graph of its vibration peak value over time. Due to the adjustment of process parameters, the measured settlement of the piston rod of the No. 2 cylinder began to repeatedly cross the preset alarm limit on June 5, 2014, but the overall operation of the equipment was stable. Utilize the on-line monitoring and alarm limit repeatedly crossing recognition technology of moving equipment proposed by this patent, when the first alarm on June 5, the equipment is marked as a semi-normal state, and the timer 4 is reset. But because there is no other measuring point alarming for the first time, and the alarm value is less than 115% of the last alarm maximum value, and the current value of any measuring point exceeds the last alarm value for three consecutive times, then reset timer 2 and timer 3, save all data. Based o...

Embodiment 2

[0061] The pump of a certain company with the number P3409A uses an acceleration sensor to monitor the vibration at the bearing seat, and draws a trend graph of the effective peak value over time. Since January 3, 2014, the radial vibration 2Ha of the driving end of the pump has gradually increased, and gradually deviated from the normal operating conditions. Utilize the on-line monitoring and alarm limit repeatedly crossing identification technology of moving equipment proposed in this patent, when the first alarm on January 3, the equipment is marked as a semi-normal state, and the timer 4 is reset. At this time, no other measuring points alarmed for the first time, and the alarm values ​​were all less than 115% of the last alarm maximum value, but the current value of 2Ha at the radial vibration measuring point exceeded the last alarm value for three consecutive times, and the monitoring system marked "Old alarm state with measurement The point is greater than the value of ...

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Abstract

The invention discloses a moving equipment online monitoring alarm limit repeated crossing method, which comprises the steps of acquiring an operation signal of an equipment measuring point based on asensor, realizing accurate alarm of a moving equipment fault by means of a moving equipment online monitoring alarm limit repeated crossing identification technology, further determining a fault cause, and taking a reasonable treatment measure. Safety accidents, resource loss, economic loss, environmental pollution and the like caused by faults of moving equipment are avoided.

Description

technical field [0001] The invention relates to the field of equipment health monitoring, in particular to a method for repeatedly crossing alarm limits for online monitoring of dynamic equipment. Background technique [0002] Equipment health monitoring technology helps to understand the working status of equipment, detect potential failures and issue early warnings in time, thereby avoiding equipment damage and resulting economic losses, environmental pollution, adverse social impacts, and even casualties. The safe, efficient and orderly operation of industrial processes plays a vital role. Among them, as the first protection layer of the industrial process, the performance of the alarm system is directly related to the success of equipment health monitoring. However, due to the large number of moving equipment parts and complex connection methods, it presents characteristics such as range uncertainty, high nonlinearity, and strong correlation, and it is difficult to keep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B21/18G08B25/00G01H17/00
CPCG01H17/00G08B21/18G08B25/008
Inventor 王迎春尹天齐王牮
Owner NAVAL UNIV OF ENG PLA
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