JPS5788286A - Internal pump - Google Patents
Internal pumpInfo
- Publication number
- JPS5788286A JPS5788286A JP16332480A JP16332480A JPS5788286A JP S5788286 A JPS5788286 A JP S5788286A JP 16332480 A JP16332480 A JP 16332480A JP 16332480 A JP16332480 A JP 16332480A JP S5788286 A JPS5788286 A JP S5788286A
- Authority
- JP
- Japan
- Prior art keywords
- pump
- cooling water
- stopped
- opened
- arrangement
- 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
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
PURPOSE: To provide an arrangement for an internal pump used for circulating nuclear reactor cooling medium, which is capable of feeding a sufficient amount of cooling water into a motor case even if operation of the pump is stopped, by providing automatically operated valves in a cooling water by-passing passage.
CONSTITUTION: Automatically operated valve 19, 20, opened when operation of a pump is stopped but closed when the pump is in operation, are provided at the portion of bearings 11, 12 in a motor case 2 or in a cooling water by-passing passage for an auxiliary impeller. Since, with such an arrangement, the valves 19, 20 are opened when operation of the pump is stopped, a considerable amount of cooling water is by-passed through small gaps at the bearing portions by way of natural circulation as shown by dotted lines in the drawing. Therefore, it is enabled to deprive heat transmitted from the pressure vessel of a nuclear reactor completely.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16332480A JPS5788286A (en) | 1980-11-21 | 1980-11-21 | Internal pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16332480A JPS5788286A (en) | 1980-11-21 | 1980-11-21 | Internal pump |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5788286A true JPS5788286A (en) | 1982-06-02 |
Family
ID=15771673
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16332480A Pending JPS5788286A (en) | 1980-11-21 | 1980-11-21 | Internal pump |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5788286A (en) |
-
1980
- 1980-11-21 JP JP16332480A patent/JPS5788286A/en active Pending
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