JPS566088A - Automatic starting device for liquefied gas pump - Google Patents
Automatic starting device for liquefied gas pumpInfo
- Publication number
- JPS566088A JPS566088A JP8139479A JP8139479A JPS566088A JP S566088 A JPS566088 A JP S566088A JP 8139479 A JP8139479 A JP 8139479A JP 8139479 A JP8139479 A JP 8139479A JP S566088 A JPS566088 A JP S566088A
- Authority
- JP
- Japan
- Prior art keywords
- liquid level
- gas
- nitrogen
- liquefied
- pump
- 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)
Abstract
PURPOSE: To achieve shortening of the starting time of the liquefied gas pump and the reduction in size of a high-pressure liquefied gas tank, by using a liquid level gauge for confirmation of ending of pre-cooling instead of practising the conventional visual check and also by making it possible to close the switch of the pump automatically so that necessity of manual operation in the field can be eliminated.
CONSTITUTION: When liquid level in a high-pressure liquefied nitrogen tank 2 became lower than a certain value, a nitrogen blow valve 8 and a pre-cooling valve 7 are opened through a contact-equipped liquid level guage 13. Then, the liquefied nitrogen is led to a liquefied nitrogen pump 3 by a certain volume by a low-pressure nitrogen tank 1, and after having been entirely gasified, it is discharged to the atmosphere through a gas-liquid separator 4 by the nitrogen blow valve 8. Volume of gasification decreases with progress of the pre-cooling, liquid level in the gas- liquid separator 4 rises and volume of discharge of gas from the nitrogen blow valve 8 comes near to zero. When the liquid level became higher than a set value of the contact-equipped liquid level gauge 13' of the gas-liquid separator 4, a switch 12 of a motor 11 is closed to start the liquefied nitrogen pump 3. It is possible, by doing so, to shorten the starting time and reduce size of the equipment.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8139479A JPS566088A (en) | 1979-06-29 | 1979-06-29 | Automatic starting device for liquefied gas pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8139479A JPS566088A (en) | 1979-06-29 | 1979-06-29 | Automatic starting device for liquefied gas pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS566088A true JPS566088A (en) | 1981-01-22 |
Family
ID=13745079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8139479A Pending JPS566088A (en) | 1979-06-29 | 1979-06-29 | Automatic starting device for liquefied gas pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS566088A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4792649A (en) * | 1986-01-31 | 1988-12-20 | Matsushita Seiko Co., Ltd. | Multiple push-button switch arrangement |
| US5218827A (en) * | 1992-04-17 | 1993-06-15 | Praxair Technology, Inc. | Pumping of liquified gas |
-
1979
- 1979-06-29 JP JP8139479A patent/JPS566088A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4792649A (en) * | 1986-01-31 | 1988-12-20 | Matsushita Seiko Co., Ltd. | Multiple push-button switch arrangement |
| US5218827A (en) * | 1992-04-17 | 1993-06-15 | Praxair Technology, Inc. | Pumping of liquified gas |
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