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Turbochargers, turbo nozzles and ships

A turbocharger and turbo nozzle technology, applied in the fields of turbochargers, turbo nozzles and ships, can solve problems such as the reduction of turbo efficiency, and achieve the effect of improving engine performance

Active Publication Date: 2016-08-24
MITSUBISHI HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the exhaust gas from the turbine nozzle is not guided to the entire turbine rotor blade, and there is a problem that the turbine efficiency is lowered compared with a turbocharger in which no partition member is provided in the turbine nozzle.

Method used

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  • Turbochargers, turbo nozzles and ships
  • Turbochargers, turbo nozzles and ships
  • Turbochargers, turbo nozzles and ships

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] Below, refer to Figure 1 to Figure 5 , an embodiment of the exhaust turbocharger according to the present invention will be described.

[0041] figure 1 is a sectional view showing the turbine side of the turbocharger according to the present embodiment, figure 2 yes figure 1 A diagram of a turbine nozzle included in a turbocharger viewed from a direction perpendicular to the central axis. Figure 3A yes figure 2 The D-D cross-sectional view, Figure 3B yes figure 2 E-E to see the sectional view. Figure 4 yes figure 2 The F-F cross-sectional view. Figure 5 It is a diagram for explaining the relationship between the position in the radial direction and the width of the throat in the turbine nozzle.

[0042] Such as figure 1 As shown, a turbocharger (may also be referred to as an "exhaust turbocharger") 10 is used to compress the combustion air of an internal combustion engine (not shown), and to combust the air with increased density to the internal comb...

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PUM

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Abstract

An object of the present invention is to provide a turbocharger, a turbine nozzle, and a ship that can improve turbine efficiency, and can effectively change an inflow area of exhaust gas that flows into the turbine nozzle according to an engine load. In a turbine nozzle (25), a plurality of blade tip portions (44) are provided spaced apart from each other in a peripheral direction, the blade tip portions (44) being provided between an outer peripheral side member (25b) and a partition member (42), and a plurality of blade root portions (45) are provided spaced apart from each other in the peripheral direction, the blade root portions (45) being provided between an inner peripheral side member (25a) and the partition member (42). Additionally, a trailing edge (45b) of a downstream side in a flow direction of exhaust gas of the blade root portion (45) is formed so as to be located closer to an upstream side in the flow direction of the exhaust gas than a trailing edge (44b) of the blade tip portion (44). Consequently, a throat width (S1) between the blade root portions (45, 45) adjacent to each other in the peripheral direction of the turbine nozzle (25) is set to be larger than a throat width (S2) between the blade tip portions (44, 44) adjacent to each other in the peripheral direction.

Description

technical field [0001] The present invention relates to, for example, a turbocharger, a turbo nozzle, and a ship used in combination with a large internal combustion engine such as a marine internal combustion engine or an internal combustion engine for power generation. Background technique [0002] In recent years, low-load operation of ships has become more and more popular. In marine internal combustion engines, higher performance is required at low loads. [0003] Therefore, as a turbocharger used in combination with a large internal combustion engine such as a marine internal combustion engine or a power generation internal combustion engine, a turbocharger is known in which a space formed between an inner casing and an outer casing is configured to The first exhaust gas flow path for guiding the exhaust gas discharged from the internal combustion engine to the outer peripheral side of the turbine nozzle is formed on the inner peripheral side of the inner casing for gu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B39/00B63H21/14F01D9/02F01D17/00F02B37/22
CPCF01D5/146F01D9/02F01D9/041F01D9/045F01D17/18F02B37/22F05D2220/40Y02T10/12F02B37/18F02C6/12
Inventor 白石启一
Owner MITSUBISHI HEAVY IND LTD