injector
Sign in to savethumb|right|350px|Injector typically used in steam locomotives thumb|right|400px|A- Steam from boiler, B- Needle valve, C- Needle valve handle, D- Steam and water combine, E- Water feed, F- Combining cone, G- Delivery nozzle and cone, H- delivery chamber and pipe, K- Check valve, L- Overflow
Article
24 sectionsContents
- Steam injector
- History
- Giffard
- Kneass
- Nozzle
- Combining tube
- Delivery tube
- Operation
- Key design parameters
- Lifting properties
- Overflow
- Check valve
- Exhaust steam injector
- Problems
- Vacuum ejectors
- Earlier application of the principle
- Modern uses
- Well pumps
- Multi-stage steam vacuum ejectors
- Construction materials
- See also
- References
- Further reading
- External links
thumb|right|350px|Injector typically used in steam locomotives thumb|right|400px|A- Steam from boiler, B- Needle valve, C- Needle valve handle, D- Steam and water combine, E- Water feed, F- Combining cone, G- Delivery nozzle and cone, H- delivery chamber and pipe, K- Check valve, L- Overflow
An injector is a system of ducting and nozzles used to direct the flow of a high-pressure fluid in such a way that a lower pressure fluid is entrained in the jet and carried through a duct to a region of higher pressure. It is a fluid-dynamic pump with no moving parts except a valve to control inlet flow.