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Gear drive turbine compressor

A turbo compressor, gear-driven technology, applied in the direction of machines/engines, liquid fuel engines, mechanical equipment, etc., can solve the problems of damage to the impeller and casing, overheating, excessive contact between the impeller and the casing, etc., to reduce the possibility, Effect of preventing stirring loss

Inactive Publication Date: 2008-09-17
IHI ROTATING MACHINERY ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] However, the rotational speed of the impeller 51 is as high as tens of thousands of revolutions per minute, and the moment of inertia of the large gear shaft is also very large, so even if the compressor has been stopped, it will take several seconds to several minutes to completely stop
Therefore, when the compressor is too late to stop, excessive contact between the impeller and the casing will occur, and there may be damage and overheating of the impeller and casing.

Method used

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Examples

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Embodiment Construction

[0045] Below, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In each figure, the same reference numerals are given to the same parts, and repeated explanations will be omitted.

[0046] Figure 4It is a partial sectional view of the gear-driven turbo compressor provided by the present invention corresponding to FIG. 1B . In this figure, the gear driven turbo compressor 10 of the present invention has a bull gear 12 , a pinion gear 14 , an impeller 16 , a thrust ring 18 and a thrust bearing 20 .

[0047] In this figure, the gear-driven turbo compressor 10 of the present invention is a 4-stage compressor, but the present invention is not limited thereto, it can be a single-stage compressor, or a compressor with 2, 3 or 5 or more stages. machine.

[0048] The bull gear 12 is driven to rotate around the axis of the bull gear shaft 11 by an unshown external drive device (an electric motor, an engine, or a turbine). T...

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Abstract

The gear drive turbine compressor of the invention has: a big gear (12) which is rotating by the drive of the external drive device, a small gear (14) rotating in high speed joggled with the big gear, an impeller (16) fixed on the small gear shaft (13) rotating in high speed taking the axial, a push-stopping ring (18) fixed on the small gear shaft supporting the lateral side of the big gear in sliding way or passing the shaft force of the small gear to the big gear, a push-stopping bearing (20) for bearing the shaft force on the big gear shaft, and a shaft moving quantity limiter (30) for limiting the shaft movement for the threshold value which is more than the small gear shaft (13).

Description

technical field [0001] The present invention relates to a gear driven turbo compressor which avoids excessive contact of the impeller with the casing. Background technique [0002] A gear-driven turbo compressor refers to a device that speeds up the rotation of a motor, engine, turbine, etc. with a gear speed increaser to drive a turbo compressor to rotate at a high speed. [0003] 1A-1C are schematic diagrams showing a conventional gear-driven turbo compressor. Fig. 1A is a front view, Fig. 1B is a sectional view along B-B direction thereof, and Fig. 1C is an enlarged view of part C thereof. [0004] In this example, the gear-driven turbo compressor 50 is a four-stage compressor, and four compressor impellers 51 sequentially compress the target gas to obtain high pressure. In FIG. 1B , the housing (compressor housing) surrounding the impeller and the gas flow path are omitted. [0005] In Fig. 1A, 52 is a large gear, and 53 is a small gear. The large gear 52 is driven to...

Claims

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Application Information

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IPC IPC(8): F04D29/00F04D17/12
CPCF04D25/163
Inventor 河田真广若林拓也小野海士前田智久
Owner IHI ROTATING MACHINERY ENG CO LTD
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