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A Flow Field Measuring Device Based on Cylindrical Coordinate System

A technology of cylindrical coordinate system and measuring device, which is applied in the direction of measuring device, machine/structural component testing, fluid dynamics test, etc. It can solve the problems that the movement cannot be realized, and the driving mechanism cannot move in the cylindrical coordinate system, so as to reduce the cost of measurement , simple structure, and the effect of reducing interference

Active Publication Date: 2019-02-12
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is: the more commonly used coordinate system in fluid machinery is the cylindrical coordinate system, but the driving mechanism of this method cannot move along the cylindrical coordinate system, especially the movement along the radial and circumferential directions cannot be realized.

Method used

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  • A Flow Field Measuring Device Based on Cylindrical Coordinate System
  • A Flow Field Measuring Device Based on Cylindrical Coordinate System
  • A Flow Field Measuring Device Based on Cylindrical Coordinate System

Examples

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Embodiment Construction

[0021] This implementation example is a flow field measurement device based on a cylindrical coordinate system.

[0022] refer to figure 1 , figure 2 and image 3 , this implementation example is based on the flow field measurement device of the cylindrical coordinate system. Guide rail 7 and guide rail base 8; among them, the screw linear guide 1 is located on the upper part of the large gear 4 and is fixedly connected with the large gear 4 through bolts, the screw linear guide 1 is installed radially along the large gear 4, and the three-hole probe 3 passes through the The needle clamp 2 is fixed on the slide block of the lead screw linear guide 1.

[0023] The large gear 4 is circular and has teeth on the outer circumference. The large gear 4 is fixed on the slider of the circular arc guide rail 7 and is coaxial with the circular arc guide rail 7. The circular arc guide rail 7 is fixedly installed on the circular guide rail base 8 Above, the hand-operated worm gear red...

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PUM

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Abstract

The invention discloses a flow field measurement device based on a cylindrical coordinate system and belongs to the field of fluid machinery experimental test technology. A probe for measuring flow parameters is fixed to a slide block capable of locking a lead screw linear guide rail through a probe clamp, the lead screw linear guide rail is fixedly arranged along the radial direction of a large gear, and the large gear is fixed to a slide block of an arc guide rail and is arranged coaxially with the arc guide rail; the arc guide rail is arranged on a guide rail base, the guide rail base is fixed to other support structures, a hand-cranking worm gear reducer is fixed to a support, a small gear is arranged on the output shaft of the hand-cranking worm gear reducer, and the small gear is engaged with the large gear and drives the large gear to rotate. The radial and circumferential movement of the probe is realized through the cooperation of the arc guide rail and the linear guide rail. One probe can complete the measurement of whole flow field, the number of measurement needed probes is effectively reduced, the measurement cost is reduced, and the interference for airflow is reduced. The measurement device has characteristics of simple structure and convenient use and operation.

Description

technical field [0001] The invention relates to the field of fluid mechanical experiment testing, in particular to a flow field measurement device based on a cylindrical coordinate system. Background technique [0002] In the field of fluid machinery, experimental technology has always been an important means to evaluate the performance of fluid machinery. In order to fully evaluate the performance of fluid machinery, it is necessary to measure multiple points in the flow field of the airflow passing through the fluid machinery to obtain parameters such as the total pressure of the airflow and the direction of the airflow velocity. [0003] In the invention patent 201410727214.9, a flow field airflow test method is disclosed. This patent adopts the method of setting multiple test points in the test space and detecting the one-dimensional velocity of the airflow at each test point along multiple test directions. Airflow information at multiple points in the flow field. The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M10/00
CPCG01M10/00
Inventor 王掩刚邵琪杰尉德利刘汉儒
Owner NORTHWESTERN POLYTECHNICAL UNIV
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