JPS5756678A - Piston device of reciprocating pump for super low temperature liquefied gas - Google Patents
Piston device of reciprocating pump for super low temperature liquefied gasInfo
- Publication number
- JPS5756678A JPS5756678A JP55129110A JP12911080A JPS5756678A JP S5756678 A JPS5756678 A JP S5756678A JP 55129110 A JP55129110 A JP 55129110A JP 12911080 A JP12911080 A JP 12911080A JP S5756678 A JPS5756678 A JP S5756678A
- Authority
- JP
- Japan
- Prior art keywords
- piston
- cylinder
- core member
- circumference
- super low
- 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.)
- Granted
Links
Abstract
PURPOSE: To permit a piston to smoothly operate under super low temperatures, by composing a piston of a core member and a circumference member and by properly determining the coefficient of thermal expansion of said members and a cylinder in such a way that temperature changes of the piston and the cylinder in radial direction becomes substantially equal.
CONSTITUTION: A piston is composed of a core member 1 and a circumference member 2, the core member 1 being secured to a rod 4 by a belt and a connector. Between the outer peripheral wall of the piston formed with its core member 1 and circumference member 2, and an inner peripheral wall of a cylinder 3, a prescribed clearance is provided, thereby causing the piston to smoothly operate. The coefficient of thermal expansion of the core member 1, circumference member 2, and cylinder 3, the thickness of the circumference member 2, and the inner diameter of the cylinder 3 are appropriately determined so that the clearance between the piston and the cylinder 3 can be always kept at a constant level irrespective of the temperature.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55129110A JPS5756678A (en) | 1980-09-19 | 1980-09-19 | Piston device of reciprocating pump for super low temperature liquefied gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55129110A JPS5756678A (en) | 1980-09-19 | 1980-09-19 | Piston device of reciprocating pump for super low temperature liquefied gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5756678A true JPS5756678A (en) | 1982-04-05 |
| JPH0321755B2 JPH0321755B2 (en) | 1991-03-25 |
Family
ID=15001306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55129110A Granted JPS5756678A (en) | 1980-09-19 | 1980-09-19 | Piston device of reciprocating pump for super low temperature liquefied gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5756678A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0252296A2 (en) * | 1986-06-28 | 1988-01-13 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Piston pump for delivering cryogenic liquid |
| KR20160144638A (en) * | 2015-06-09 | 2016-12-19 | 에이치앤피엔지니어링 (주) | Hydraulic servo actuators with cryogenic fluids |
-
1980
- 1980-09-19 JP JP55129110A patent/JPS5756678A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0252296A2 (en) * | 1986-06-28 | 1988-01-13 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Piston pump for delivering cryogenic liquid |
| DE3621726A1 (en) * | 1986-06-28 | 1988-01-14 | Deutsche Forsch Luft Raumfahrt | PISTON PUMP FOR CONVEYING A CRYOGENIC LIQUID |
| KR20160144638A (en) * | 2015-06-09 | 2016-12-19 | 에이치앤피엔지니어링 (주) | Hydraulic servo actuators with cryogenic fluids |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0321755B2 (en) | 1991-03-25 |
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