JPS56113085A - Operation method for pump - Google Patents
Operation method for pumpInfo
- Publication number
- JPS56113085A JPS56113085A JP1360080A JP1360080A JPS56113085A JP S56113085 A JPS56113085 A JP S56113085A JP 1360080 A JP1360080 A JP 1360080A JP 1360080 A JP1360080 A JP 1360080A JP S56113085 A JPS56113085 A JP S56113085A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- opening
- flow
- pump
- intermediate opening
- 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
Links
Landscapes
- Control Of Non-Positive-Displacement Pumps (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
PURPOSE: To improve the efficiency when changing the number of operating pump, by squeezing a valve to predetermined intermediate opening in specific range of flow while in other range opening the valve entirely or bringing to the opening larger than said intermediate opening and squeezing the valve only in the required flow range.
CONSTITUTION: The characteristic curve at the delivery of a discharge valve will vary as shown by the dashed line. In other wird it will shift from 1 to 1' for 100% r.p.m. of single pump, from 2 to 2' for minimum r.p.m. of single pump, from 3 to 3' for 100% r.p.m. of two pumps and from 4 to 4' for minimum r.p.m. of two pumps. The normal operational range will also shift from 6 to 6'. When assuming the number of pump changing flow is q1, the flows for controlling the valve to intermediate opening are q2, q3 and when bringing the valve to intermediate opening between them while entirely opening for the flow higher than q3, it can be operated efficiently. When the minimum required flow is Q1, it can be operated efficiently even in the region between Q1Wq2 by opening the valve from the intermediate opening even for the flow lower than q2.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1360080A JPS56113085A (en) | 1980-02-08 | 1980-02-08 | Operation method for pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1360080A JPS56113085A (en) | 1980-02-08 | 1980-02-08 | Operation method for pump |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56113085A true JPS56113085A (en) | 1981-09-05 |
Family
ID=11837697
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1360080A Pending JPS56113085A (en) | 1980-02-08 | 1980-02-08 | Operation method for pump |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56113085A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0359162A (en) * | 1989-07-25 | 1991-03-14 | Hisaka Works Ltd | Device and method for controlling flow in package dyeing or the like |
-
1980
- 1980-02-08 JP JP1360080A patent/JPS56113085A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0359162A (en) * | 1989-07-25 | 1991-03-14 | Hisaka Works Ltd | Device and method for controlling flow in package dyeing or the like |
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