JPS6432096A - Automatic feed water pump - Google Patents

Automatic feed water pump

Info

Publication number
JPS6432096A
JPS6432096A JP18756687A JP18756687A JPS6432096A JP S6432096 A JPS6432096 A JP S6432096A JP 18756687 A JP18756687 A JP 18756687A JP 18756687 A JP18756687 A JP 18756687A JP S6432096 A JPS6432096 A JP S6432096A
Authority
JP
Japan
Prior art keywords
pump
control valve
pipe
series
midway
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.)
Pending
Application number
JP18756687A
Other languages
Japanese (ja)
Inventor
Soichi Fukuzawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP18756687A priority Critical patent/JPS6432096A/en
Publication of JPS6432096A publication Critical patent/JPS6432096A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Non-Positive-Displacement Pumps (AREA)

Abstract

PURPOSE:To make a series-parallel conversion so easy by branching off a discharge pipe of a first pump, connecting it to the suction side of a second pump, and installing a control valve, being opened or closed in response to pipe internal pressure, in the point midway in the branch pipe. CONSTITUTION:A check valve 10 and branch pipes 8, 8' in the midway of a discharge pipe 3 of a first pump 1, while a control valve 9 operating in response to pressure is installed in the midway of these branch pipes 8 and 8', and the branch pipe 8' is connected to an inlet port 25 of a second pump 2. At a small flow area, since pressure in the branch pipe 8 is high, the control valve 9 is opened, coming to series operation. When it turns to a large flow area, the control valve 9 is closed, coming to parallel operation in these pumps 1 and 2. Thus, a series-parallel conversion can be facilitated.
JP18756687A 1987-07-29 1987-07-29 Automatic feed water pump Pending JPS6432096A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18756687A JPS6432096A (en) 1987-07-29 1987-07-29 Automatic feed water pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18756687A JPS6432096A (en) 1987-07-29 1987-07-29 Automatic feed water pump

Publications (1)

Publication Number Publication Date
JPS6432096A true JPS6432096A (en) 1989-02-02

Family

ID=16208332

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18756687A Pending JPS6432096A (en) 1987-07-29 1987-07-29 Automatic feed water pump

Country Status (1)

Country Link
JP (1) JPS6432096A (en)

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