Automatic calibration and automatic measurement device of fluid flow test probe

A technology for testing probes and automatic calibration, which can be used in measuring devices, fluid dynamics tests, and machine/structural parts testing, etc. It can solve problems such as cumbersome work, low work efficiency, and judgment errors, so as to speed up and save time. and human effect

Inactive Publication Date: 2008-12-24
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the calibration and measurement work of this type of probe is mainly done manually. In this way, a lot of time is spent on adjusting the probe rotation angle, reading and recording experimental data, so the work is cumbersome, time-consuming and laborious, and the work efficiency is low.
Moreover, there are many manual operations, which are easy to introduce the judgme

Method used

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  • Automatic calibration and automatic measurement device of fluid flow test probe
  • Automatic calibration and automatic measurement device of fluid flow test probe
  • Automatic calibration and automatic measurement device of fluid flow test probe

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[0024] The present invention will be further described in detail below in conjunction with the drawings and embodiments.

[0025] Such as figure 1 As shown, an automatic calibration device for a fluid flow test probe includes a probe pitch angle adjustment mechanism and a probe translation adjustment mechanism (see image 3 ), probe deflection angle adjustment mechanism and data acquisition and control system. The probe skew angle adjustment mechanism includes a beam 12. The probe pitch angle adjustment mechanism and the probe translation adjustment mechanism components 1 to 10 are installed on the beam 12 through the support rod 11. The other end of the beam 12 is equipped with a balance weight 17 for balance The block is adjusted in translation by the screw 18 ( Figure 4 ). A support 13 is installed below the middle of the beam, and a numerical control motor 14 and an encoder 15 are installed inside the support. The cross beam 12 is connected to the support 13 through a bearin...

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Abstract

The invention discloses an automatic calibration and measuring device of a fluid flowing test probe, which comprises a mechanical part and an electric control part, and can finish the following three actions that control the motion of the probe: the probe can realize topping rotation around a horizontal shaft O2-O2 by a probe topping angle adjusting mechanism with a first numerical control electric motor; the probe can realize translation motion along the horizontal shaft O2-O2 by a probe translation motion adjusting mechanism with a second numerical control electric motor; the probe can realize skew rotation around a vertical shaft O1-O1 by a probe skew angle adjusting mechanism with a third numerical control electric motor. According to a motion feedback signal, three numerical control electric motors are coordinated under control of a computer, and a data collecting system is combined so as to automatically finish the calibration and measurement jobs of the fluid test probe. Compared with the tests with manual operation, the automatic calibration and measuring device of the fluid flowing test probe improves testing precision and saves time and labor power.

Description

technical field [0001] The invention relates to a device capable of realizing automatic calibration and automatic measurement of fluid flow test probes. Background technique [0002] In the flow test of fluid machinery, single-hole, three-hole and five-hole probes are widely used, mainly used to measure the total pressure, static pressure, velocity and direction of the fluid. The calibration and measurement workload of this type of probe is very large. Calibration is divided into characteristic calibration and direction calibration, which mainly determines the pressure (pressure difference)-velocity characteristic (curve) and direction coefficient (curve). In the direction calibration, it is necessary to change the angle of the probe hole relative to the airflow in the calibration wind tunnel several times, and then conduct tests and analysis to obtain the corresponding direction coefficient curve. When measuring, it is necessary to adjust the direction angle of the probe ...

Claims

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Application Information

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IPC IPC(8): G01M10/00
Inventor 宫武旗
Owner XI AN JIAOTONG UNIV
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