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Unequal-speed impeller mechanism and compressor and expansion mechanism including same

A technology of expansion mechanism and impeller, applied in the direction of machine/engine, blade supporting element, mechanical equipment, etc., can solve the problems of unreasonable structure, inability to solve multi-level linkage, limited application and so on

Inactive Publication Date: 2016-09-07
SHANGLING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The application of multi-stage impeller mechanism is very wide, but whether it is impeller compressor or turbine, it usually requires many stages. Although there is a counter-rotating structure, the application has been limited due to the inability to solve multi-stage linkage, and the gap between two adjacent stages If the rotational speeds between the two stages are the same and the diameters are different, it will cause unreasonable structure. If the rotational speeds of adjacent two stages are different, the performance of the multistage impeller mechanism will be effectively improved.

Method used

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  • Unequal-speed impeller mechanism and compressor and expansion mechanism including same
  • Unequal-speed impeller mechanism and compressor and expansion mechanism including same
  • Unequal-speed impeller mechanism and compressor and expansion mechanism including same

Examples

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Comparison scheme
Effect test

Embodiment 1

[0073] Such as figure 1 The variable-speed impeller mechanism shown includes three impellers 1 , and the three impellers 1 are arranged correspondingly in sequence, and two adjacent impellers 1 are set in linkage through the transmission device 2 .

[0074] See attached figure 1 , when including more than two corresponding impellers 1 in sequence, the transmission device 2 can be arranged between each group of adjacent impellers 1, so as to conveniently realize multi-stage linkage, and at the same time realize each of the The rotating speed of the impeller 1 is not equal to improve the performance of the impeller.

[0075] In this embodiment, three correspondingly arranged impellers 1 are provided. As a convertible embodiment, the number of impellers 1 included in the different-speed impeller mechanism can be set according to actual needs. When it includes three or more The impeller 1 can be as figure 1 As shown, all the impellers 1 are arranged correspondingly in sequence,...

Embodiment 2

[0077] Such as figure 2 The difference between the variable speed impeller mechanism shown in Embodiment 1 is that the variable speed impeller mechanism includes two impellers 1, which are respectively set as the moving impeller A 11 and the moving impeller B 12, and the moving impeller A 11 Correspondingly arranged with the moving impeller B 12 to form a working stage, the moving impeller A 11 and the moving impeller B 12 are directly set in linkage through the transmission device 2 .

[0078] As an alternative embodiment, the moving impeller A 11 and the moving impeller B 12 can also be set in linkage indirectly through the transmission device 2, for example, between the moving impeller A 11 and the transmission device 2 or in the Another transmission mechanism is also arranged between the moving impeller B 12 and the transmission device 2 .

Embodiment 3

[0080] Such as image 3 In the shown variable speed impeller mechanism, on the basis of Embodiment 1, the speed change device 2 is set as a forward speed change device so that the two impellers 1 that are set in linkage through it rotate in the same direction. A stationary impeller 3 is arranged between the two impellers 1 set in linkage with the speed changer.

[0081] As an alternative implementation manner, the stationary impeller 3 in this embodiment may not be provided.

[0082] As a changeable embodiment, the speed change device 2 can also be changed to a reverse speed change device so that the rotation directions of the two impellers 1 set in linkage are opposite. At this time, the stationary impeller 3 does not need to be provided. .

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Abstract

The invention discloses an unequal-speed impeller mechanism, including impellers. At least two of the impellers are arranged correspondingly. The two adjacent impellers are in linkage arrangement via a variable speed gear. The invention further discloses a compressor and an expansion mechanism which apply the unequal-speed impeller mechanism. The invention can enable rotating speeds of the impellers at two adjacent stages to be unequal by arranging the variable speed gear; meanwhile can achieve multi-stage linkage easily so that the structure of the impeller structure can be more reasonable; can reduce the number of stages of a conventional impeller mechanism by arranging boosting flow paths; can also weaken shock waves when in use for a counter rotating structure so as to effectively improve the performance of the multi-stage impeller mechanism; and has the advantages of simple structure, high efficiency and so forth.

Description

technical field [0001] The invention relates to the field of thermal energy and power, in particular to a different-speed impeller mechanism, and also relates to a compressor and an expansion mechanism using the different-speed impeller mechanism. Background technique [0002] The application of multi-stage impeller mechanism is very wide, but whether it is impeller compressor or turbine, it usually requires many stages. Although there is a counter-rotating structure, the application has been limited due to the inability to solve multi-stage linkage, and the gap between two adjacent stages If the rotational speeds of the impellers are the same but the diameters are different, the structure will be unreasonable. If the rotational speeds of two adjacent stages are different, the performance of the multi-stage impeller mechanism will be effectively improved. Therefore need to invent a kind of variable speed impeller mechanism. Contents of the invention [0003] In order to s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D5/02F04D29/26
CPCF01D5/02F04D29/26
Inventor 靳北彪
Owner SHANGLING CO LTD
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