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A turbocharger vane diffuser vibration suppression structure

A turbocharger and diffuser technology, which is applied in the direction of machines/engines, non-variable pumps, pump components, etc., can solve the torsional mode changes of high-order components of blades, strong excitation of bladed diffuser blades, The acceleration and total vibration level of the supercharger body exceeds the standard, etc., to reduce the pressure mutation state and eliminate the effect of local airflow vortex

Active Publication Date: 2022-06-21
CHINA NORTH ENGINE INST TIANJIN
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Problems solved by technology

[0003] In view of this, the present invention aims to propose a turbocharger vane diffuser vibration suppression structure, to solve the existing turbocharger under certain operating conditions, the wake disturbance of the compressor impeller outlet airflow has The strong excitation of the vane of the vane diffuser causes a sharp change in the torsional mode of the high-order component of the vane, which makes the acceleration and total vibration level of the supercharger body exceed the standard

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  • A turbocharger vane diffuser vibration suppression structure

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Embodiment Construction

[0020] It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

[0021] In the description of the present invention, it should be understood that the terms "center", "portrait", "horizontal", "top", "bottom", "front", "rear", "left", "right", " The orientation or positional relationship indicated by vertical, horizontal, top, bottom, inner, outer, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and The description is simplified rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be constru...

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Abstract

The invention provides a vaned diffuser vibration suppressing structure of a turbocharger, which comprises a compressor volute, a compressor impeller, diffuser blades, a bearing body, a controller, a vibration sensor and an electromagnetic valve. In the present invention, a number of air intake holes are opened on the bearing body of the supercharger, and vibration sensors and electromagnetic valves are arranged. When the vibration of the supercharger body is relatively large, the controller controls the electromagnetic valve to introduce the air of the compressor into the impeller of the compressor. Between the outlet and the inlet of the diffuser vane, the local airflow vortex is eliminated, the sudden change of pressure in the local space is alleviated, and it plays the role of suppressing the vibration of the vaned diffuser of the turbocharger.

Description

technical field [0001] The invention belongs to the field of electromechanical technology, and in particular relates to a vibration suppressing structure of a vane diffuser of a turbocharger. Background technique [0002] The compressor of marine diesel turbocharger generally adopts a vane diffuser to improve the pressure ratio of the supercharger and the compressor efficiency under operating conditions. However, under certain conditions, the wake disturbance of the airflow at the outlet of the compressor impeller strongly stimulates the vanes of the vaned diffuser, causing the torsional mode of the high-order component of the vane to change sharply, and the total acceleration vibration level of the supercharger body exceeds the standard. SUMMARY OF THE INVENTION [0003] In view of this, the present invention aims to provide a vibration suppression structure for a vaned diffuser of a turbocharger, so as to solve the problem that the wake disturbance of the air flow at the...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/66F04D29/44F04D27/02F04D27/00F04D29/056
CPCF04D29/661F04D29/444F04D27/0215F04D27/001F04D29/0563
Inventor 王振彪张炜
Owner CHINA NORTH ENGINE INST TIANJIN
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