Title:
PIPING NETWORK LEAK DETECTION SYSTEM, AS WELL AS LEAK DETECTION DEVICE AND LEAK DETECTION METHOD USED IN SAID SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/034187
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a device for detecting leaks in a piping network, said device being capable of performing calculations both at night and on work days without periodic inspections of an entire factory having to be performed on a non-work day, eliminating the need for leak location candidates to be designated, and detecting and outputting the position and amount of leaks of a compressed gas or liquid on the basis of desired time duration measurement values acquired during operation of a compressor. In order to achieve the above purpose, the present invention provides a device for detecting leaks of a compressed gas or liquid in a piping network, wherein the device is characterized in that: time series measurement values are acquired for each of a supply tank pressure and supply tank flow rate supplied from a supply tank and a terminal facility pressure at the entrance of a terminal facility; time series measurement data that exhibits a high change in pressure is extracted; a time series response of the flow rate and pressure within the piping network is calculated on the basis of a piping network model, the extracted time series measurement data being used as a boundary condition in said calculation; the position and amount of a leak of a compressed gas or liquid within the piping network are determined on the basis of the calculated time series response of the flow rate and pressure; and the leak position and leak amount are displayed.
Inventors:
LIU YAPING (JP)
YASHIKI TATSUROU (JP)
YASHIKI TATSUROU (JP)
Application Number:
PCT/JP2017/028605
Publication Date:
February 22, 2018
Filing Date:
August 07, 2017
Export Citation:
Assignee:
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD (JP)
International Classes:
G01M3/28; G05B23/02
Domestic Patent References:
| WO2015189921A1 | 2015-12-17 |
Foreign References:
| JP2005339195A | 2005-12-08 | |||
| JP2002098061A | 2002-04-05 | |||
| JP2010048058A | 2010-03-04 | |||
| JPH0763637A | 1995-03-10 | |||
| JP2003279392A | 2003-10-02 |
Attorney, Agent or Firm:
SEIRYO I.P.C. (JP)
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