JPS54156567A - Orifice type flowmeter - Google Patents
Orifice type flowmeterInfo
- Publication number
- JPS54156567A JPS54156567A JP6531978A JP6531978A JPS54156567A JP S54156567 A JPS54156567 A JP S54156567A JP 6531978 A JP6531978 A JP 6531978A JP 6531978 A JP6531978 A JP 6531978A JP S54156567 A JPS54156567 A JP S54156567A
- Authority
- JP
- Japan
- Prior art keywords
- fluid
- pipe
- heat
- capillaries
- behind
- 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
- Measuring Volume Flow (AREA)
Abstract
PURPOSE: To prevent transfer of heat of the atmosphere to fluid and make possible flow rate measurement of fluid of low temperature by providing a second pipe in concentrical form in the outside region of a pipe in which fluid flows and evacuating spacing between these pipe walls.
CONSTITUTION: A second pipe 7 is provided concentrically in the outside region of a pipe 1 in which fluid flows and the spacing formed between these pipe walls is evacuated to a degree of vacuum of 1×10-4 Torr or under. The pressures before and behind an orifice plate 2 are connected to pressure measuring pipes 4, 5 through capillaries 8, 9. As a result, heat from the atmosphere transfers to the fluid and the occurrence of a change in the temperature of the fluid before and behind the orifice plate 2 is obviated. In addition, the quantity of heat intrusion through the capillaries 8, 9 becomes slight and therefore the flow rate measurement of the fluid of low temperature below -100°C may be accurately performed.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6531978A JPS54156567A (en) | 1978-05-30 | 1978-05-30 | Orifice type flowmeter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6531978A JPS54156567A (en) | 1978-05-30 | 1978-05-30 | Orifice type flowmeter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54156567A true JPS54156567A (en) | 1979-12-10 |
Family
ID=13283462
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6531978A Pending JPS54156567A (en) | 1978-05-30 | 1978-05-30 | Orifice type flowmeter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54156567A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105466502A (en) * | 2014-12-22 | 2016-04-06 | 王子平 | Suspension dike flowmeter |
-
1978
- 1978-05-30 JP JP6531978A patent/JPS54156567A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105466502A (en) * | 2014-12-22 | 2016-04-06 | 王子平 | Suspension dike flowmeter |
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