Title:
漏れ素子の評価装置及び評価方法
Document Type and Number:
Japanese Patent JP6770388
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide means of evaluating quality, performance and other aspects of leaking elements.SOLUTION: A standard leaking element 8 that causes a constant leak to generate at a constant temperature and under a constant pressure is made ready, and an evaluation object leaking element 9 that causes the leak to generate at the constant temperature and under the constant pressure is evaluated. A standard capacity chamber 28 is connected to the secondary port 8b of the standard leaking element 8. The secondary port 9b of the evaluation object leaking element 9 connects an object capacity chamber 29. Hydrostatic pressure is supplied to each of the primary port 8a of the standard leaking element 8 and the primary port 9a of the evaluation object leaking element 9. The differential pressure between the capacity chambers 28 and 29 are detected by differential pressure detecting means 2. Based on the detected differential pressure, the evaluation object leaking element 9 is evaluated.SELECTED DRAWING: Figure 1
Inventors:
Hojo
Yasunori Ohata
Shigeo Nakazawa
Yasunori Ohata
Shigeo Nakazawa
Application Number:
JP2016190653A
Publication Date:
October 14, 2020
Filing Date:
September 29, 2016
Export Citation:
Assignee:
Fukuda Co., Ltd.
International Classes:
G01M3/02; G01M3/26
Domestic Patent References:
| JP54099686U | ||||
| JP10232179A | ||||
| JP4289410A | ||||
| JP60111249U |
Foreign References:
| WO2014184895A1 | ||||
| US5013006 |
Attorney, Agent or Firm:
Noboru Watanabe
Harada Sanjugi
Tetsumi Aono
Harada Sanjugi
Tetsumi Aono