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Detection apparatus, detection method, and computer readable medium

a detection method and detection apparatus technology, applied in the direction of machines/engines, positive displacement liquid engines, liquid fuel engines, etc., can solve the problem of a large burden on the arithmetic processing of frequency analysis

Inactive Publication Date: 2019-05-02
YOKOGAWA ELECTRIC CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a detection apparatus, detection method, and program for detecting cavitation in a pump using discharge pressure data. The detection apparatus can acquire discharge pressure data and detect cavitation based on the fluctuation amount of the time waveform of the discharge pressure data during a target detection period. The detection apparatus can also detect whether cavitation is occurring in the pump by comparing the discharge pressure data with a threshold value or difference between the discharge pressure data during a target detection period and the discharge pressure data before the target detection period. This invention helps to improve the efficiency of pumps and reduce damages caused by cavitation.

Problems solved by technology

However, according to the technique in Patent Document 1, an arithmetic processing of the frequency analysis can be a large burden.

Method used

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  • Detection apparatus, detection method, and computer readable medium
  • Detection apparatus, detection method, and computer readable medium
  • Detection apparatus, detection method, and computer readable medium

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Embodiment Construction

[0018]Hereinafter, the present invention will be described with reference to embodiments of the invention. However, the following embodiments shall not be construed as limiting the claimed invention. Also, not all combinations of features described in the embodiments are essential for means to solve problems provided by aspects of the invention.

[0019]FIG. 1 illustrates an exemplary configuration of a plant 10 to which a detection apparatus 100 according to the present embodiment is provided. The plant 10 is a system to control equipment or the like while supplying liquid to the equipment or the like by a pump. The plant 10 may be at least a part of a plant facility, machinery, a production apparatus, power generating apparatus, or the like. The plant 10 includes equipment 20, a liquid source 30, a pump 40, a suction pressure gauge 50, a discharge pressure gauge 60, and a control system 70. Note that, at least some of the equipment 20, the liquid source 30, the pump 40, the suction p...

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Abstract

Easily detecting cavitation to occur in a pump. A detection apparatus, a detection method, and a program are provided. The detection apparatus includes: a discharge pressure acquiring unit to acquire discharge pressure data indicating discharge pressure of a pump; and a detector to detect occurrence of cavitation in the pump based on a fluctuation amount of a time waveform of the discharge pressure data during a target detection period. The detector may have: a fluctuation amount calculator to calculate the fluctuation amount of the discharge pressure data during the target detection period; and a determining unit to determine, in response to the calculated fluctuation amount becoming the reference fluctuation amount or more, that cavitation has occurred in the pump.

Description

[0001]The contents of the following Japanese patent application are incorporated herein by reference.[0002]NO. 2017-211094 filed in JP on Oct. 31, 2017.BACKGROUND1. Technical Field[0003]The present invention relates to a detection apparatus, a detection method, and a program.2. Related Art[0004]Cavitation may occur to a pump that sucks and discharges liquid due to the liquid evaporating. Conventionally, a technique to detect occurrence of such cavitation has been known, in which frequency analysis is performed on discharge pressure of the pump (refer to Patent Document 1, for example).[0005]Patent Document 1: Japanese Patent Application Publication No. S64-45975.[0006]However, according to the technique in Patent Document 1, an arithmetic processing of the frequency analysis can be a large burden. For example, in a case of a plant including numerous pumps, i.e., from hundreds to thousands or more pumps, it is possible that cavitation is treated for each pump. Thus, a technique to ef...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F04D29/66F04D15/00F04B49/06
CPCF04D29/669F04D15/0088F04B49/065F04B11/00F04B49/08F04B51/00F04B2205/02F04B2205/04
Inventor KONADA, SOICHIROTANAKA, NORIOMATSUDA, TAKAAKI
Owner YOKOGAWA ELECTRIC CORP
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