CA2028543A1 - Method of controlling the inner pressure of an air bag in an air inflation/deflation weir made of flexible film and apparatus therefor - Google Patents

Method of controlling the inner pressure of an air bag in an air inflation/deflation weir made of flexible film and apparatus therefor

Info

Publication number
CA2028543A1
CA2028543A1 CA 2028543 CA2028543A CA2028543A1 CA 2028543 A1 CA2028543 A1 CA 2028543A1 CA 2028543 CA2028543 CA 2028543 CA 2028543 A CA2028543 A CA 2028543A CA 2028543 A1 CA2028543 A1 CA 2028543A1
Authority
CA
Canada
Prior art keywords
air
air bag
inner pressure
weir
deflation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA 2028543
Other languages
French (fr)
Other versions
CA2028543C (en
Inventor
Haruhiko Matsuoka
Ichiro Maruyama
Yoshiomi Tsuji
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to CA 2028543 priority Critical patent/CA2028543C/en
Publication of CA2028543A1 publication Critical patent/CA2028543A1/en
Application granted granted Critical
Publication of CA2028543C publication Critical patent/CA2028543C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

An air inflation/deflation weir having an air bag made of a flexible film attached to the bed and the vertical bank of a river and adapted to be inflated and deflated by charging and discharging air into and from the inside of the air bag, wherein the effect of the change of the atmospheric air temperature on the inner pressure of the air bag is eliminated and the inner pressure of the air bag is always maintained to a predetermined value so as to inflate and rise the weir to a predetermined height in accordance with the detected water levels at the upstream and the downstream of the weir. An abnormally high or low inner pressure of the bag air which would otherwise cause burst or buckling of the air bag, or lead to flooding disaster can be prevented.
CA 2028543 1990-10-25 1990-10-25 Method of controlling the inner pressure of an air bag in an air inflation/deflation weir made of flexible film and apparatus therefor Expired - Fee Related CA2028543C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2028543 CA2028543C (en) 1990-10-25 1990-10-25 Method of controlling the inner pressure of an air bag in an air inflation/deflation weir made of flexible film and apparatus therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2028543 CA2028543C (en) 1990-10-25 1990-10-25 Method of controlling the inner pressure of an air bag in an air inflation/deflation weir made of flexible film and apparatus therefor

Publications (2)

Publication Number Publication Date
CA2028543A1 true CA2028543A1 (en) 1992-04-26
CA2028543C CA2028543C (en) 2000-05-02

Family

ID=4146256

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2028543 Expired - Fee Related CA2028543C (en) 1990-10-25 1990-10-25 Method of controlling the inner pressure of an air bag in an air inflation/deflation weir made of flexible film and apparatus therefor

Country Status (1)

Country Link
CA (1) CA2028543C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109137837A (en) * 2018-08-16 2019-01-04 烟台桑尼橡胶有限公司 A kind of fast automatic fill-drain syctem in gas shield dam and its fill discharge method
CN109869179A (en) * 2019-04-18 2019-06-11 代连朋 A kind of negative pressure stabilizing device for gas pumping under a coal mine
CN119715038A (en) * 2025-03-03 2025-03-28 淮北矿业股份有限公司 Air bag type large-volume large-depth columnar sediment layered sampling device and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110042805B (en) * 2019-04-29 2021-04-30 黄芳 Anchoring structure and gas shield dam

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109137837A (en) * 2018-08-16 2019-01-04 烟台桑尼橡胶有限公司 A kind of fast automatic fill-drain syctem in gas shield dam and its fill discharge method
CN109869179A (en) * 2019-04-18 2019-06-11 代连朋 A kind of negative pressure stabilizing device for gas pumping under a coal mine
CN119715038A (en) * 2025-03-03 2025-03-28 淮北矿业股份有限公司 Air bag type large-volume large-depth columnar sediment layered sampling device and method

Also Published As

Publication number Publication date
CA2028543C (en) 2000-05-02

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Legal Events

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