Vibration suppression structure for vaned diffuser of turbocharger

A turbocharger and diffuser technology, which is applied in the direction of machines/engines, pump control, and components of pumping devices for elastic fluids, can solve the problem of strong excitation of vane diffuser blades and supercharger body Acceleration total vibration level exceeds the standard, blade high-order component torsional mode changes, etc.

Active Publication Date: 2020-11-20
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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  • Vibration suppression structure for vaned diffuser of turbocharger

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Embodiment Construction

[0020] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0021] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, 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 thus 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 interpreted...

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Abstract

The invention provides a vibration suppression structure for a vaned diffuser of a turbocharger. The vibration suppression structure for the vaned diffuser of the turbocharger comprises an air compressor volute, an air compressor impeller, a diffuser blade, a bearing body, a controller, a vibration sensor and an electromagnetic valve. According to the vibration suppression structure for the vaneddiffuser of the turbocharger, a plurality of gas taking holes are formed in the bearing body of the turbocharger; the vibration sensor and the electromagnetic valve are arranged, in the case of largevibration of a turbocharger body, the electromagnetic valve is controlled through the controller to lead air of the air compressor into the space between the outlet of the air compressor impeller andthe inlet of the diffuser blade, the local airflow vortex is eliminated, and the abrupt change state of a pressure in a local space is reduced, so that the vibration suppression effect on the vaned diffuser of the turbocharger is acted.

Description

technical field [0001] The invention belongs to the field of electromechanical technology, and in particular relates to a vibration suppressing structure of a vaned diffuser of a turbocharger. Background technique [0002] The compressor of marine diesel engine turbocharger generally adopts vane diffuser to improve the pressure ratio of the supercharger and the efficiency of the compressor under operating conditions. However, under certain working conditions, the wake disturbance of the airflow at the outlet of the compressor impeller strongly excites the blades of the vaned diffuser, which causes a sharp change in the torsional mode of the high-order components of the blades, and the total acceleration vibration level of the supercharger body exceeds the standard. Contents of the invention [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 ...

Claims

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Application Information

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Patent Type & Authority Applications(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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