Содержание
- 2. Marine Pumps Reciprocating pump (double-acting piston pump) Gearwheel pump Centrifugal pump
- 3. NON-RETURN VALVES Delivery lines and discharge lines to and from the pump are often fitted with
- 4. Double-acting displacement pump
- 5. sound DOUBLE-ACTING DISPLACEMENT PUMP The double acting displacement pump has a simultaneous suction action and discharge
- 6. The volumes of the pump chambers are increased and decreased by the reciprocating motion of the
- 7. discharge valve 1 is closed by suction; suction valve 1 is opened by suction. discharge valve
- 8. discharge valve 2 is closed by suction; suction valve 2 is opened by suction. discharge valve
- 9. Gearwheel pump
- 10. The liquid enters the pump-housing on the suction side. Gearwheel pump
- 11. s The liquid is carried around between the teeth of the gearwheels. Gearwheel pump
- 12. The liquid is discharged through the discharge line . Gearwheel pump
- 13. Centrifugal pump
- 14. The liquid enters the pump house through the suction intake . Centrifugal pump
- 15. The rotating impeller causes a centrifugal force. Centrifugal pump
- 16. The liquid discharged through the discharge line. Centrifugal pump
- 17. The Anchor Winch shafts band brakes gearwheels warping drums cable lifters dog clutches
- 18. THE ANCHOR WINCH The anchor winch (windlass) is used to drop and heave in the anchor
- 19. ANCHOR WINCH SHAFTS Driving shaft Intermediate shaft Main shaft. sound
- 20. s DRIVING SHAFT An electric motor (or electric-hydraulic motor) drives the primary shaft (driving shaft).
- 21. INTERMEDIATE SHAFT At the extremities of the intermediate shaft are the warping drums. Warping drums are
- 22. THE MAIN SHAFT The main shaft is divided into starboard and port sections. sound
- 23. CABLE LIFTERS The anchor chain is wound around the cable lifter. sound
- 24. BAND BRAKE Band brakes control the dropping speed of the anchor. sound
- 25. GEARWHEELS AND DOG CLUTCHES Main gearwheels can be shifted to port or starboard. sound Dog clutches
- 26. s the steering engine
- 27. The steering engine is a remote controlled electrically or hydraulically driven telemotor. sound the steering engine
- 28. sound The rudderstock goes through the ruddertrunk. Ruddertrunk the steering engine
- 29. By turning the steering wheel on the bridge the hydraulic pressure is built up. This moves
- 30. Exhaust gas boilers s
- 31. The exhaust gas boiler (or waste heat boiler) consists of a welded vertical cylinder with a
- 32. Exhaust gases enter the boiler through the exhaust gas inlet; Exhaust gases heat up banks of
- 33. Water turns to steam, which is used to produce energy for heating purposes, or even for
- 34. In a composite boiler the generation of steam can be maintained by oil firing when the
- 35. s Generators and Electric motors
- 36. sound A generator produces either alternating current (A/C) or direct current (D/C). THE GENERATOR
- 37. Alternating current changes polarity about 50 times a second. A/C is used for lighting and to
- 38. sound A transformer increases the voltage (step-up) or reduces the voltage (step-down) THE TRANSFORMER
- 39. . The compound motor is a combination of a shunt motor and a series motor. .
- 40. sound The compound motor combines the advantages of the shunt motor and series motor: it has
- 41. sound sound The advantage of the a-synchronous motor is, that it doesn’t have carbon brushes and
- 42. sound sound THE SYNCHRONOUS MOTOR. The advantages of the synchronous motor are, that it requires little
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