JPS5721609A - Raisable weir made of flexible film - Google Patents
Raisable weir made of flexible filmInfo
- Publication number
- JPS5721609A JPS5721609A JP9598680A JP9598680A JPS5721609A JP S5721609 A JPS5721609 A JP S5721609A JP 9598680 A JP9598680 A JP 9598680A JP 9598680 A JP9598680 A JP 9598680A JP S5721609 A JPS5721609 A JP S5721609A
- Authority
- JP
- Japan
- Prior art keywords
- weir
- raisable
- flexible film
- water level
- upstream
- 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
Links
Landscapes
- Barrages (AREA)
Abstract
PURPOSE: To permit the automatic falling of a flexible film-made raisable weir capable of rising or falling by the supply or discharge of a fluid by opening of a float valve provided to a drain valve connected to the raisable weir when the level of the upstream reaches a water level at which the weir is automatically fallen down.
CONSTITUTION: In a raisable weir made of a flexible film, attached traversally to the river bed, an flexible film bag 1 constituting the raisable weir is supplied with air through a supply or discharge pipe 2 and a supply pipe 3 from a blower 5 to expand. When the level of upstream reaches a water level 17 at which the raisable weir is fallen down under such risen condition, the upstream flows through an upstream level detection pipe 13 from an automatic falling water level-setting pipe 14 into a water storage tank 18. As the water level rises in the tank 18, a float 8 goes up and the float valve 7 is opened, whereupon air inside the flexible film bag 1 is discharged to fall the raisable weir down.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9598680A JPS5721609A (en) | 1980-07-14 | 1980-07-14 | Raisable weir made of flexible film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9598680A JPS5721609A (en) | 1980-07-14 | 1980-07-14 | Raisable weir made of flexible film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5721609A true JPS5721609A (en) | 1982-02-04 |
| JPS5747327B2 JPS5747327B2 (en) | 1982-10-08 |
Family
ID=14152451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9598680A Granted JPS5721609A (en) | 1980-07-14 | 1980-07-14 | Raisable weir made of flexible film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5721609A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0611494B2 (en) * | 1986-05-16 | 1994-02-16 | 工業技術院長 | Composite material molding method |
-
1980
- 1980-07-14 JP JP9598680A patent/JPS5721609A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5747327B2 (en) | 1982-10-08 |
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