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A power measurement device and method for a small ultra-high-speed prime mover

A technology of power measurement and prime mover, applied in the direction of measuring devices, power measurement, torque measurement, etc., can solve the problems of poor power measurement accuracy, achieve the effect of improving measurement accuracy and reducing purchase costs

Active Publication Date: 2018-02-27
XI AN JIAOTONG UNIV
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AI Technical Summary

Problems solved by technology

Therefore, even if the price factor is not considered, when using a dynamometer for the aerodynamic performance test of the prime mover, the maximum speed of the prime mover cannot exceed 50,000r / min; when the speed of the prime mover exceeds 50,000r / min, no dynamometer can be used , a small compressor or other power-consuming machinery must be used as the load, and the measurement accuracy of its power will be poor
[0008] However, in view of the price factor of the high-speed dynamometer, when the aerodynamic performance test of a small ultra-high-speed prime mover is performed, if the speed exceeds 10,000r / min, a small compressor or other power-consuming machinery is generally used as a load, so that the power measurement Accuracy will be poor

Method used

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  • A power measurement device and method for a small ultra-high-speed prime mover
  • A power measurement device and method for a small ultra-high-speed prime mover

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Embodiment Construction

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

[0025] see figure 1 , the overall technical idea of ​​the present invention is to use the existing high-speed electric spindle technology to convert it into a generator through a reasonable conversion circuit. When the prime mover drives the generator, the electric energy is generated and consumed in the load. The signal thus obtains the power parameters of the prime mover, which effectively solves the technical problem of power measurement in the aerodynamic performance test of the small ultra-high-speed prime mover.

[0026] see figure 2 , taking the design power as an example of the disk turbine aerodynamic performance test platform of 1kW, the specific structure of the power measuring device of the small ultra-high speed prime mover is as follows:

[0027] The device includes a coupling 2, an electric spindle 3, a capacitor 4, a load 5, and a p...

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Abstract

The invention discloses a power measurement device and method of a small ultra-high-speed prime mover. The device includes a coupling, an electric spindle, a capacitor, a load and a power analyzer. The power analyzer measures the electrical signal on the load to obtain the measured power Motive power parameters. The power measurement device and method effectively solve the technical problem that the power parameters of the small ultra-high-speed prime mover are difficult to accurately measure through the conversion of the performance parameters of the load compressor during the aerodynamic performance test, and avoid the instrument failure caused by the use of a small ultra-high-speed dynamometer. The problem of high acquisition costs.

Description

technical field [0001] The invention relates to a power measuring device and method, in particular to a power measuring device and method for a small ultra-high-speed prime mover aerodynamic performance test. Background technique [0002] As we all know, with the pull of market demand and the continuous improvement of energy utilization and processing and manufacturing technology, the impeller machinery currently used as the prime mover is rapidly developing in two extreme directions, that is, ultra-miniature and super-large. For example, the ultra-miniature impeller machine developed by the Massachusetts Institute of Technology has an impeller diameter of only 6mm, a blade height of only 0.225mm, and a shaft speed of up to 1,200,000r / min, generating a shaft power of 17W. [0003] For conventional impeller machinery, the energy conversion between its thermal energy and mechanical work is completed based on the turbine Euler equation, that is, when the working fluid flows thr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L3/24
Inventor 邓清华齐文娇丰镇平
Owner XI AN JIAOTONG UNIV
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