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Detecting faults of system components in a continuous process

A fault and component technology, applied in the field of fault detection, which can solve problems such as pipe leakage

Inactive Publication Date: 2009-06-24
ABB (SCHWEIZ) AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the result of the prior art method is either numerous false alarms or undetected real pipe leaks

Method used

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  • Detecting faults of system components in a continuous process
  • Detecting faults of system components in a continuous process
  • Detecting faults of system components in a continuous process

Examples

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Embodiment Construction

[0039] now refer to figure 1 , shows a diagram of a process 100 for the water / steam side of a boiler / turbine power cycle. As is well known to those skilled in the art, the water / steam side process 100 includes a steam generator 2, a high pressure turbine 104, an intermediate pressure turbine 106, a low pressure turbine 108, a generator 110, a makeup tank 112, a condenser 114, a low pressure feed water heater 116 , medium pressure feedwater heater 118 , deaerator feedwater heater 120 , high pressure feedwater heater 122 , condensate pump 124 and boiler feed pump 126 . Although in figure 1 Only one low-pressure feedwater heater 116, one medium-pressure feedwater heater 118, and one high-pressure feedwater heater 122 are shown in FIG. figure 1 One heater is shown for illustrative purposes only. It should also be understood that in some installations, heater 118 is located between heater 122 and boiler feed pump 126 .

[0040] Several types of sensors are associated with proce...

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Abstract

A method and apparatus and for detecting faults in components of a continuous process such as a steam generator. A model of the process is developed using a modeling technique such as advanced pattern recognition and the model is used to generate predicted values for a predetermined number of the operating parameters of the process. Statistical process control methods are used to determine if the difference between the predicted and actual measured values for one or more of the parameters exceeds a configured statistical limit. A rule set is used to indicate an actual or probable fault in a component of the continuous process.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Provisional Patent Application Serial No. 60 / 511,998, filed October 16, 2003, entitled "A Method For Detecting Leaks In Tubes Of Steam Boilers," the contents of which are incorporated by reference in their entirety as Pursuant to and incorporated herein by, and hereby claiming the benefit of priority under 35 U.S.C. 119(e). technical field [0003] The present invention relates to continuous processes, such as steam generators, and more particularly, to the detection of faults in continuous process components. Background technique [0004] A continuous process system, such as a steam generator process, has many components. A steam generator system includes a boiler with tubes through which water flows. Due to heat, pressure and wear over time, the boiler tubes eventually begin to leak, ie a "leak event". When one or more boiler tubes begin to leak, the steam flashed over by t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/418G05B23/02G05B9/02G05B11/01G05B13/02G05B15/02G05B19/18
CPCF28F2265/16F22B35/18G05B17/02G05B23/0254Y02P90/02
Inventor 唐纳德·弗雷里希斯弗兰克·托特
Owner ABB (SCHWEIZ) AG