A large two-stroke diesel engine and a supporting plate structure for connection between an engine main structure and an exhaust gas receiver

A diesel engine and stroke technology, applied in mechanical equipment, engine components, machines/engines, etc., can solve problems such as nasty, cracked, and not completely satisfactory solutions

Inactive Publication Date: 2012-10-10
MAN ENERGY SOLUTIONS FILIAL AF MAN ENERGY SOLUTIONS SE TYSKLAND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A particular problem is the vibration of the flexible support, which causes, inter alia, annoying noises
Attempts have been made to solve this problem by applying welded stiffening ribs to the flexible support, thereby lowering the natural frequency of the flexible support; however, cracks appear where the ribs are welded to the support, and the problem has not been completely satisfactorily resolved anyway

Method used

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  • A large two-stroke diesel engine and a supporting plate structure for connection between an engine main structure and an exhaust gas receiver
  • A large two-stroke diesel engine and a supporting plate structure for connection between an engine main structure and an exhaust gas receiver
  • A large two-stroke diesel engine and a supporting plate structure for connection between an engine main structure and an exhaust gas receiver

Examples

Experimental program
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Embodiment Construction

[0018] figure 1 and figure 2 The engine block 1 of a large two-stroke diesel engine is shown in side view and end view, respectively. Said engine is a one-way flow low-speed two-stroke crosshead diesel engine of the crosshead type, which may be a propulsion system in a ship or an engine in a power plant. These engines typically have 3 to 14 cylinders in a row. The engine is built from the base 2 with the main bearings for the crankshaft (only the flywheel 3 attached to the end of the crankshaft is visible). Depending on the production facility, the base 2 can be made in a single piece or can be divided into sections of suitable size.

[0019] An A-frame box 4 of welded design is mounted on the base 2 . On the exhaust side, the frame box 4 is provided with release valves for each cylinder, and on the camshaft side, the frame box 4 is provided with large hinged doors for each cylinder. A crosshead guide surface (not shown) is integrated in the frame box 4 .

[0020] A cyl...

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Abstract

The structure has an upright plate (100) whose upper and lower ends are attached to an exhaust-gas receiver (16) and a main portion (1) respectively. A pair of steel plate arranged in upright plate, is extended toward the exhaust-gas receiver. A spacer is arranged between steel plates formed in the upright plate. The predetermined interval is formed between steel plate and spacer.

Description

technical field [0001] The invention relates to a large two-stroke diesel engine with an engine body structure and to a support plate structure for the connection between the engine body structure and the exhaust receiver. Background technique [0002] The exhaust receivers of large two-stroke diesel engines are highly loaded components that receive hot (approximately 450° C.) exhaust gases from individual cylinders at pressures up to 4 bar. [0003] Due to the large size of the exhaust receiver (which can be significantly more than 10 meters long and have a diameter of up to 2m) and high operating temperature, the thermal expansion of the exhaust receiver is very significant, and large engines have the ability to be divided into two or more A receiver for two housing sections separated by bellows to absorb dimensional changes caused by thermal expansion. The entire exhaust receptacle and any part belonging to the exhaust receptacle is covered with a thick layer of insulati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N13/08F01N13/18
CPCF01N13/105F01N13/1805F01N2260/20F01N2340/04F01N2340/06F02B77/00
Inventor 约根·马肯
Owner MAN ENERGY SOLUTIONS FILIAL AF MAN ENERGY SOLUTIONS SE TYSKLAND
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