A test device for hydrodynamic performance of a shaftless pump jet propeller

Abstract

The present invention discloses a shaftless pump-jet propeller hydrodynamic force performance test apparatus. A gauging spindle is disposed inside a propeller body, and a push force torque sensor is disposed inside the gauging spindle. The gauging spindle drives blades on the propeller body to rotate, and simultaneously receives push force and torque action of the propeller body, and is elastically deformed. The push force torque sensor detects a deformation amount of the gauging spindle and converts the deformation amount into an electric signal, so that performance data of the shaftless pump-jet propeller body is collected. According to the apparatus, the gauging spindle and the propeller body are integrated, an effect on conduit streaming of a conduit push force measurement support canbe avoided, a conduit outer wall shape is not destroyed, and there is no interference between multiple sensors during force measurement.

Description

technical field [0001] The invention relates to a hydrodynamic performance test device, in particular to a shaftless pump jet propeller hydrodynamic performance test device. Background technique [0002] Shaftless pump jet propulsion is a kind of propeller that can be widely used in underwater vehicles such as torpedoes and submarines. It has many advantages such as high efficiency, anti-cavitation, low noise, and compact structure. The focus and hotspots of research in the field of devices. [0003] The shaftless pump jet propeller integrates the rotor and the impeller, and the integrated motor directly drives the rotor and drives the impeller to rotate to generate thrust. The vibration and noise caused by the shaftless pump jet propulsor also caused inconvenience to the measurement of the thrust and torque of the hydrodynamic performance test. [0004] In the hydrodynamic performance test of the traditional propeller, the dynamic instrument is connected with the drive sh...

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Problems solved by technology

[0003] The shaftless pump jet propeller integrates the rotor and the impeller, and the integrated motor directly drives the rotor and drives the impeller to rotate to generate thrust. Vibration and noise caused, but at the same time it caused inconvenience to the measurement of the thrust and torque of the hydrodynamic performance test of the shaftless pump jet propeller

[0004] In the hydrodynamic performance test of the traditional propeller, the dynamic instrument is connected with the drive shaft to measure the thrust and torque data transmitted by the drive shaft, so the shaftless pump jet propeller cannot directly use the traditional measurement method for its thrust and torque. In addition, the range and structure of the dynamic instrument used for the hydrodynamic performance test of the traditional propeller are usually only suitable for the scale model of the propeller with a diameter of less than 200mm, and cannot be used for the hydrodynamic performance of the large-scale shaftless pump jet propeller test

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