JPS5517632A - Protecting device for balancing disc of pump - Google Patents
Protecting device for balancing disc of pumpInfo
- Publication number
- JPS5517632A JPS5517632A JP8940278A JP8940278A JPS5517632A JP S5517632 A JPS5517632 A JP S5517632A JP 8940278 A JP8940278 A JP 8940278A JP 8940278 A JP8940278 A JP 8940278A JP S5517632 A JPS5517632 A JP S5517632A
- Authority
- JP
- Japan
- Prior art keywords
- pump
- balancing
- pressure
- disc
- stationary vane
- 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
Landscapes
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
PURPOSE: To prevent a balancing disc from coming into contact with a stationary vane unit, by reducing the cross-sectional area of a passage extending from a balancing unit to a suction pipe of a pump at the time of starting and stopping of the pump to raise the pressure of a balancing chamber to keep the balancing disc away from the stationary vane unit.
CONSTITUTION: When a multistage high-pressure centrifugal pump is run, the pressure of the discharge port 6 of the pump is transmitted to the pressure chamber 20 of a balancing disc protector 15 through a pipe 19 to elevate a piston 22 and open a leaking flow return passage 16. When the motive power supply to the pump is stopped and the discharge pressure of the pump falls below a set level, the piston 20 is moved down by a spring 25 and a piston rod 23 projects into the passage 16. At that time, the pressure of the balancing chamber 9 rises but the flow rate does not greatly fall. Therefore, the gap between the balancing disc 1 and the stationary vane unit 7 does not become extremely small. The disc is thus prevented from coming into contact with the stationary vane unit.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8940278A JPS5517632A (en) | 1978-07-24 | 1978-07-24 | Protecting device for balancing disc of pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8940278A JPS5517632A (en) | 1978-07-24 | 1978-07-24 | Protecting device for balancing disc of pump |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5517632A true JPS5517632A (en) | 1980-02-07 |
JPS6249475B2 JPS6249475B2 (en) | 1987-10-20 |
Family
ID=13969640
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8940278A Granted JPS5517632A (en) | 1978-07-24 | 1978-07-24 | Protecting device for balancing disc of pump |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5517632A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01106457U (en) * | 1988-01-08 | 1989-07-18 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0968195A (en) * | 1995-08-31 | 1997-03-11 | Ebara Corp | Canned motor pump |
-
1978
- 1978-07-24 JP JP8940278A patent/JPS5517632A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01106457U (en) * | 1988-01-08 | 1989-07-18 |
Also Published As
Publication number | Publication date |
---|---|
JPS6249475B2 (en) | 1987-10-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5517632A (en) | Protecting device for balancing disc of pump | |
JPS5517604A (en) | Method of and device for operating hydraulic turbine or pump hydraulic turbine | |
JPS56121895A (en) | Water pump | |
JPS5537539A (en) | Fuel injection pump | |
JPS572498A (en) | Protection device for oil film seal for centrifugal compressor | |
JPS5554781A (en) | Air valve | |
JPS55131598A (en) | Rotary compressor | |
JPS52138704A (en) | Fluid pump | |
JPS55134785A (en) | Rotary compressor | |
JPS54162205A (en) | Self-suction type pump | |
JPS55134790A (en) | Pump | |
JPS5716299A (en) | Water feeding apparatus | |
JPS57153999A (en) | Casing of centrifugal pump | |
JPS5491806A (en) | Device to supply and discharge liquid in liquid-cooled rotor | |
JPS5465807A (en) | Rotary pump | |
JPS54125508A (en) | Capacity control method and device for turbo-type fluid machinery | |
JPS5536680A (en) | Flow control valve | |
JPS5656985A (en) | Check valve for pump | |
JPS5392901A (en) | Operation controller for pump system | |
JPS54103907A (en) | Mixed flow turbine | |
JPS55109795A (en) | Fixed amount flow pumping device | |
JPS55156274A (en) | Surface oscillation control device of hydraulic machine | |
JPS5481434A (en) | Protection circuit of water-turbine or pump water-turbine | |
JPS56143374A (en) | Enclosed type refrigerant compressor | |
JPS57191486A (en) | Vane pump |