Title:
WATER INTAKE DEVICE
Document Type and Number:
Japanese Patent JP2015168981
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a water intake device capable of pumping underground water of a deep part in a small diameter by a large pumping quantity.SOLUTION: A water intake device comprises a casing pipe 1, a water intake pipe 2 arranged so as to form an annular flow passage 12 of a pressurized fluid in the casing pipe 1 and an ejector mechanism 30 for taking out water flowed in the casing pipe 1 via the water intake pipe 2, and the ejector mechanism 30 comprises a diffuser part 13 formed in a tip part of the water intake pipe 2, an annular thick part 14 formed on the inner periphery of the casing pipe 1 and fixing the diffuser part 13 to a rear end part and a nozzle pipe 15 fixed to the tip part inner periphery of the annular thick part 14 and opening a tip injection hole 15c toward the diffuser part 13 at an interval to the diffuser part 13, and the annular thick part 14 is formed with an inflow hole 22 for making the water flow in the annular thick part by penetrating in the radial direction through this, and is formed with a communication hole 23 for communicating the annular flow passage 12 and the nozzle pipe 15 by penetrating in the axial direction through the annular thick part.
Inventors:
KUWABARA KIYOSHI
HONDA SATOSHI
YOSHII KYOICHIRO
YANAGI HIROBUMI
KURISU MOTOAKI
NAKAMURA SEIJI
MATSUBAYASHI MAKOTO
ITABASHI SATORU
KOIKE TOSHIO
HONDA SATOSHI
YOSHII KYOICHIRO
YANAGI HIROBUMI
KURISU MOTOAKI
NAKAMURA SEIJI
MATSUBAYASHI MAKOTO
ITABASHI SATORU
KOIKE TOSHIO
Application Number:
JP2014044662A
Publication Date:
September 28, 2015
Filing Date:
March 07, 2014
Export Citation:
Assignee:
HIGASHI NIPPON RYOKAKU TETSUDO
TEKKEN CONSTR CO
JTEC CORP
TEKKEN CONSTR CO
JTEC CORP
International Classes:
E21B43/00; E02D3/10; E02D19/10; F04F5/24
Domestic Patent References:
| JP2013011089A | 2013-01-17 | |||
| JP2010281106A | 2010-12-16 | |||
| JP2006070564A | 2006-03-16 | |||
| JP2013011089A | 2013-01-17 | |||
| JP2010281106A | 2010-12-16 | |||
| JP2006070564A | 2006-03-16 |
Foreign References:
| US20040031603A1 | 2004-02-19 | |||
| US20040031603A1 | 2004-02-19 |
Other References:
柳博文 他: "小口径揚水井の現場揚水試験", 鉄建技術報告, JPN6017039945, 1 December 2013 (2013-12-01), pages 53 - 58
柳博文 他: "小口径揚水井の現場揚水試験", 鉄建技術報告, JPN6017039945, 1 December 2013 (2013-12-01), pages 53 - 58
高橋保裕 他: "小口径で経済的な揚水工法の開発", 土木学会第６７回年次学術講演会 講演概要集, JPN6018012842, September 2012 (2012-09-01), pages 747 - 748
柳博文 他: "小口径揚水井の現場揚水試験", 鉄建技術報告, JPN6017039945, 1 December 2013 (2013-12-01), pages 53 - 58
高橋保裕 他: "小口径で経済的な揚水工法の開発", 土木学会第６７回年次学術講演会 講演概要集, JPN6018012842, September 2012 (2012-09-01), pages 747 - 748
Attorney, Agent or Firm:
Hirotaka Hatayama