JPS6456976A - Fixed pressure control device for fluid feed pump - Google Patents
Fixed pressure control device for fluid feed pumpInfo
- Publication number
- JPS6456976A JPS6456976A JP21443787A JP21443787A JPS6456976A JP S6456976 A JPS6456976 A JP S6456976A JP 21443787 A JP21443787 A JP 21443787A JP 21443787 A JP21443787 A JP 21443787A JP S6456976 A JPS6456976 A JP S6456976A
- Authority
- JP
- Japan
- Prior art keywords
- plunger
- error
- speed
- detected
- determined
- 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 Positive-Displacement Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
PURPOSE:To enable fluid to be fed with a small fluctuation by calculating a plunger speed from a control constant, determined in accordance with a detection value of a plunger position, and from a pressure error and driving a plunger to be controlled, in the case of a plunger reciprocating pump. CONSTITUTION:In a delivery flow line of a plunger reciprocating feed fluid pump 1 suitable for a liquid chromatograph or the like, a pressure sensor 2 is provided and comparing its detecting value with a preset value, set in a pressure setting means 4, in an error detecting means 6, an error between both the compared values is detected. While providing a position detecting means 8 detecting a plunger position of the feed fluid pump 1, in accordance with the detected position of a plunger, the constant of a plunger speed control expression is determined by a control constant determining means 10. And determining a plunger speed by a plunger speed determining means 12 being based on the determined control constant and the pressure error, detected in the error detecting means 6, the plunger is driven and controlled by a driving means 14 being based on this plunger speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21443787A JPS6456976A (en) | 1987-08-27 | 1987-08-27 | Fixed pressure control device for fluid feed pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21443787A JPS6456976A (en) | 1987-08-27 | 1987-08-27 | Fixed pressure control device for fluid feed pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6456976A true JPS6456976A (en) | 1989-03-03 |
Family
ID=16655764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21443787A Pending JPS6456976A (en) | 1987-08-27 | 1987-08-27 | Fixed pressure control device for fluid feed pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6456976A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008216168A (en) * | 2007-03-07 | 2008-09-18 | Shimadzu Corp | Liquid feeding apparatus |
| JP2016173343A (en) * | 2015-03-18 | 2016-09-29 | 株式会社島津製作所 | Liquefied carbon dioxide supply pump and supercritical fluid chromatograph |
| WO2021005728A1 (en) * | 2019-07-09 | 2021-01-14 | 株式会社島津製作所 | Liquid delivery pump and liquid chromatograph |
-
1987
- 1987-08-27 JP JP21443787A patent/JPS6456976A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008216168A (en) * | 2007-03-07 | 2008-09-18 | Shimadzu Corp | Liquid feeding apparatus |
| JP2016173343A (en) * | 2015-03-18 | 2016-09-29 | 株式会社島津製作所 | Liquefied carbon dioxide supply pump and supercritical fluid chromatograph |
| CN105986993A (en) * | 2015-03-18 | 2016-10-05 | 株式会社岛津制作所 | Liquid carbon dioxide delivery pump, and supercritical fluid chromatograph provided with the same |
| WO2021005728A1 (en) * | 2019-07-09 | 2021-01-14 | 株式会社島津製作所 | Liquid delivery pump and liquid chromatograph |
| JPWO2021005728A1 (en) * | 2019-07-09 | 2021-01-14 | ||
| US11977056B2 (en) | 2019-07-09 | 2024-05-07 | Shimadzu Corporation | Liquid delivery pump and liquid chromatograph |
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