JPS6454330A - Manufacture of flow rate control valve - Google Patents
Manufacture of flow rate control valveInfo
- Publication number
- JPS6454330A JPS6454330A JP62211631A JP21163187A JPS6454330A JP S6454330 A JPS6454330 A JP S6454330A JP 62211631 A JP62211631 A JP 62211631A JP 21163187 A JP21163187 A JP 21163187A JP S6454330 A JPS6454330 A JP S6454330A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- flow rate
- machining
- control valve
- pressure
- 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
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
PURPOSE:To obtain a high-accuracy, inexpensive method by carrying out fine adjustment machining by using the specific relation between upstream and downstream pressure of a valve in test facilities and its absolute temperature. CONSTITUTION:The characteristics of the control valve to be manufactured are so set that a capacity coefficient (Cv value) indicating the easiness of a gas in a noncritical state to flow is prescribed under the necessary pressure and flow rate condition of the scheduled facilities. This valve is manufactured by adjusting finely and machining the needle 10 of a valve which is machined roughly in advance by using different conditions by test facilities. At this time, the gap part between the needle 10 and a port 11 serves as a throttle mechanism provided with a fluid flow passage for adjusting a flow rate by varying the extent of contraction of area. Then the fine adjustment machining is carried out by using the constant relation, i.e. (P1+P2)<2>/{T1/2(P1<2>-P2<2>)<1-/2>= constant, where P1 and P2 are the upstream pressure and downstream pressure and T is the absolute temperature of the fluid.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62211631A JPS6454330A (en) | 1987-08-26 | 1987-08-26 | Manufacture of flow rate control valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62211631A JPS6454330A (en) | 1987-08-26 | 1987-08-26 | Manufacture of flow rate control valve |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6454330A true JPS6454330A (en) | 1989-03-01 |
Family
ID=16608974
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62211631A Pending JPS6454330A (en) | 1987-08-26 | 1987-08-26 | Manufacture of flow rate control valve |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6454330A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106596089A (en) * | 2016-12-21 | 2017-04-26 | 中国南方航空工业(集团)有限公司 | Aero-engine hollow blade core space flow adjusting and measuring method |
CN106769062A (en) * | 2016-12-21 | 2017-05-31 | 中国南方航空工业(集团)有限公司 | A kind of method for carrying out flow adjustment to blade inner chamber |
-
1987
- 1987-08-26 JP JP62211631A patent/JPS6454330A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106596089A (en) * | 2016-12-21 | 2017-04-26 | 中国南方航空工业(集团)有限公司 | Aero-engine hollow blade core space flow adjusting and measuring method |
CN106769062A (en) * | 2016-12-21 | 2017-05-31 | 中国南方航空工业(集团)有限公司 | A kind of method for carrying out flow adjustment to blade inner chamber |
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