Device and method for synchronous accurate measurement of transient flow field of vane pump

Abstract

The invention provides a device and a method for the synchronous accurate measurement of the transient flow field of a vane pump. The device comprises a test device system, a variable rotating speed work condition rotating shaft phase locking device and a PIV measurement system, wherein the test device system comprises a motor, a model pump, a pipeline system and a pressure stabilizing tank; the rear end of a motor shaft of the motor is connected with the model pump; the model pump is connected with the pressure stabilizing tank through the pipeline system; the variable rotating speed work condition rotating shaft phase locking device comprises a point light source laser, a moving disc and a point laser receiver; a plurality of round holes are formed in the circumferential outer edge of the moving disc; the moving disc is perpendicular to the motor shaft and fixed to the front end of the motor shaft; the point light source laser is positioned on the outer side of the moving disc, the laser receiver is positioned on the inner side of the moving disc, and the point light source laser and the laser receiver are positioned on the same horizontal line; and the PIV measurement system is connected with the variable rotating speed work condition rotating shaft phase locking device. The device can accurately measure and output the rotating speed parameters of the vane pump in the starting and stopping process of the vane pump and realize the data collection of the same phase transient flow field at different rotating speeds.

Description

technical field [0001] The invention belongs to the field of transient flow laws inside a fluid machine (pump), in particular to a device and method for synchronously and accurately measuring the transient flow field of a vane pump. Background technique [0002] As a special kind of transient process, the startup and shutdown process of the vane pump can provide instantaneous fluid power for special applications, such as weapon launch, ship water jet propulsion and other occasions. Due to the transient startup and shutdown process, the speed of the vane pump changes greatly in a short period of time, the flow between the impeller channels presents a complex state of rapid changes in rotational acceleration, and the characteristic Reynolds number rapidly increases from zero to millions , the internal flow of the pump changes rapidly from a laminar flow state to a complex three-dimensional unsteady turbulent flow, which is not only accompanied by complex physical phenomena suc...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the present invention provides a synchronous and accurate measurement device and method for the transient flow field of the vane pump, which captures the evolution characteristics of the transient flow field during the startup and shutdown of the vane pump, and solves the initial phase flow field during the startup and shutdown process. Difficult to measure accurately, unable to output the speed parameters of the vane pump in real time, etc., to achieve parameter acquisition of the same phase flow field at different speeds

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