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Turbo-charger single-stage prototype centrifugal compressor interstage pressure test structure

A technology of centrifugal compressor and turbocharger, which is applied in pump testing, machine/engine, measuring fluid pressure, etc. It can solve the problem of not finding the static pressure measurement between compressor stages, etc., and achieve the effect of simple structure and easy realization

Inactive Publication Date: 2009-09-30
CHINA NORTH IND GRP NO 70 RES INST
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  • Claims
  • Application Information

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Problems solved by technology

[0005] Scholars abroad have carried out detailed point distribution test pressure on the impeller cover and diffuser, and obtained flow field information. According to the seized information, they were all obtained from large-diameter impellers with a diameter of more than 200mm or enlarged models, and many of them also carried out model abstraction. Such as lengthening the diffuser, replacing the volute with a gas collector, etc.; there is no report on the static pressure measurement between the compressor stages on the prototype

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  • Turbo-charger single-stage prototype centrifugal compressor interstage pressure test structure
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  • Turbo-charger single-stage prototype centrifugal compressor interstage pressure test structure

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Embodiment Construction

[0018] The preferred embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0019] Such as figure 1 , figure 2 a. figure 2 b. figure 2 c. image 3 a. image 3 b. image 3 As shown in c, a turbocharger single-stage prototype centrifugal compressor interstage pressure test structure includes a compressor volute, a compressor impeller 6, and a compressor back plate 7, and the volute is fixed to the compressor back plate 7 by bolts Above, the compressor impeller 6 is fixed on the 7-axis sleeve of the compressor back plate through the shaft end nut, and the compressor volute is divided into a split volute 1 and a sleeve at a position of 180 mm in diameter in the middle of the side wall of the compressor volute diffuser 2 Two parts, the split volute 1 and the sleeve 2 are fixedly connected through the heat-fitting surface 3 of the split volute 1 and the contact surface 4 of the sleeve 2, and 8 are evenly distrib...

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Abstract

The invention belongs to turbo-charger technical field, particularly relating to centrifugal compressor interstage pressure test structure, especially a turbo-charger single-stage prototype centrifugal compressor interstage pressure test structure. The test structure includes a compressor spiral casing, a blower impeller and a compressor back disk. The spiral casing is fixed on the compressor back disk through bolts. The blower impeller is fixed on the shaft seal sleeve of the compressor back disk by the shaft end nuts. The compressor spiral casing is divided into a split spiral casing and a sleeve at the position of diameter 180 mm in the middle on the side wall of the compressor spiral casing diffuser. The split spiral casing and the sleeve are fixably connected with the contact surface of the sleeve by the hot charging face of the split spiral casing. The invention measures the inner pressure of the spiral casing and the diffuser on the centrifugal compressor prototype model machine and measures the enclosing cover pressure in the circumferential direction 360 DEG scope. The test structure has simple structure and easy implement based on the prototype model machine.

Description

technical field [0001] The invention belongs to the technical field of turbochargers, in particular to an interstage pressure test structure of a centrifugal compressor, in particular to an interstage pressure test structure of a turbocharger single-stage prototype centrifugal compressor. Background technique [0002] With the improvement of power density, high-pressure ratio and ultra-high-pressure ratio turbochargers have become the current development trend. However, with the increase of the boosting ratio, the centrifugal compressor enters into a transonic flow state, and its flow range narrows sharply and its efficiency decreases; at the same time, the structure of the transonic centrifugal compressor is very complicated, and it is difficult to rely solely on the existing CFD numerical simulation technology. Get reliable results. In order to expand the range of transonic state flow and improve efficiency, it has become a current development trend and research hotspot t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L15/00F04B51/00
Inventor 李书奇王晋伟张继忠张俊跃邢卫东
Owner CHINA NORTH IND GRP NO 70 RES INST
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