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Device capable of applying waste heat of ship driving

A technology for ships and drive shafts, which is applied in the directions of ship auxiliary drives, ship propulsion, circuit devices, etc., and can solve problems such as efficiency loss, control valve pressure loss, and ship power grid frequency fluctuations.

Inactive Publication Date: 2016-11-09
WARTSILA SAM ELECTRONICS GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of this is a loss of efficiency, which causes a pressure loss across the control valve
If the turbines are driven irregularly, the supplied energy fluctuates, which can lead to undesired fluctuations in the frequency of the ship's grid

Method used

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  • Device capable of applying waste heat of ship driving
  • Device capable of applying waste heat of ship driving

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Embodiment Construction

[0023] Modern diesel engines2 for ship propulsion, such as figure 1 and 2 As shown in , has an efficiency of about 50%.

[0024] About 25% of the primary energy will be lost as waste heat. This part of energy waste heat utilization has been realized since more than ten years ago, such as figure 1 shown. Thus in the ship drive, the energy used to supply the ship's grid 4' is used, or the shaft can also be additionally driven by the auxiliary engine 6', the so-called booster engine.

[0025] Thus, a conventional arrangement for propulsion of a ship comprises a diesel engine 2' (the so-called main engine of the ship) which is connected in rotation to the ship's drive shaft 8' and to a generator 10'. The generator is connected to the ship grid through the motor converter 12' and the ship grid converter 14', a DC voltage intermediate circuit 16' is arranged between the motor converter and the ship grid converter, and the generator 10' Supplying energy to the ship's grid 4', or...

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Abstract

The invention relates to a device which comprises a diesel engine and is applied to ship driving. The diesel engine is in a rotary connection with a ship driving shaft and an electric generator, wherein the electric generator is connected with a ship power grid by a motor frequency converter and a ship power grid frequency converter, and a direct voltage intermediate circuit is disposed between the motor frequency converter and the ship power grid frequency converter; and the electric generator supplies energy to the ship power grid or acquires energy from the ship power grid as an auxiliary engine, and acts as the diesel engine. In addition, the device comprises a waste gas turbine which is supplied by waste gas of the diesel engine and / or a steam turbine which is supplied by waste heat of the diesel engine, and the two turbines drive a turbine generator. The device is characterized in that output energy of the turbine generator is supplied to the voltage intermediate circuit of the motor frequency converter and the ship power grid frequency converter.

Description

technical field [0001] The invention relates to a device for the drive of a ship using a diesel engine which is rotationally connected to the drive shaft of the ship and to a generator. Here, the generator acts as a diesel engine, via a motor converter (Motor-Umrichter) and via a ship's network converter (Bordnetz-Umrichter), between which a DC voltage is provided In the intermediate circuit, the generator is connected to the ship's power grid, and the generator sends energy to the ship's power grid, or as an auxiliary engine, obtains supply from the ship's power grid. Furthermore, such a device has an exhaust gas turbine fed by the exhaust gas of the diesel engine and / or a steam turbine fed by waste heat of the diesel engine, both turbines driving a turbogenerator. Background technique [0002] Modern diesel engines for ship propulsion have an efficiency of about 50%, with about 25% of the primary energy being lost as waste heat. The waste heat utilization of this part of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63J3/02F02G5/02
CPCB63J3/02B63J2003/008F02G5/02B63J3/00F02B41/10H02J7/345H02P27/06H02J2310/42Y02T10/12Y02T70/5236B63H2021/205F01K7/16
Inventor 赫尔曼·柯明施
Owner WARTSILA SAM ELECTRONICS GMBH
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