Title:
緊急遮断弁故障発生時のバックアップ構造
Document Type and Number:
Japanese Patent JP6646615
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide spare means for a case where an original shutoff valve loses its functions, by combining float valves mechanically operating utilizing buoyancy of floats.SOLUTION: In a one-tank type or a two-tank integrated type distribution basin, each water storage tank of the two-tank integrated type distribution basin is connected in series by a communication pipe or outflow pipes from respective water storage tanks are connected in parallel, for outflow into a water distributing pipe. An emergency shut-off valve comprising a control device, a driving device and a shutoff valve is disposed in a water storage tank of either a one-tank type or two-tank integrated type distribution basin. The control device detects an emergency such as breakage or a possibility of breakage of a water distributing pipe of water service due to disaster such as an earthquake or an accident in a construction work, and transmits a control signal. The driving device is actuated by the control signal. The shutoff valve rotates a spindle by the driving device and intercepts water flow in the water distributing pipe. As a separate body from the emergency shut-off valve, a float valve adjusting opening degree of the valve according to the lowering of water level and intercepting the water flow in the water distributing pipe is connected with the emergency shut-off valve in series.SELECTED DRAWING: Figure 1
Inventors:
Makishi Tatsuo
Eiji Suzuki
Eiji Suzuki
Application Number:
JP2017081728A
Publication Date:
February 14, 2020
Filing Date:
April 18, 2017
Export Citation:
Assignee:
Japan Engineering Co., Ltd.
International Classes:
E03B11/00; F16K17/36; F16K21/18; F16K31/04; F16K31/18
Domestic Patent References:
| JP9256426A | ||||
| JP2017053147A | ||||
| JP10219763A | ||||
| JP10073173A | ||||
| JP3127723U | ||||
| JP10266281A | ||||
| JP2012012807A | ||||
| JP11256628A | ||||
| JP61102922A |
Foreign References:
| US20130037114 |
Attorney, Agent or Firm:
Yoshifumi Matsunami