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Supercharged type tracer particle generator

A technology of tracer particles and generators, which is applied in the direction of instruments, measuring devices, fluid velocity measurement, etc., can solve the problems of spreading tracer particles, inability to use pipelines for remote transmission, limiting the application range of LDA and PIV, etc., and achieves easy structure , easy operation, reliable control effect

Active Publication Date: 2015-01-07
BEIJING CHANGCHENG INST OF METROLOGY & MEASUREMENT AVIATION IND CORP OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tracer particle generator is an important device for generating tracer particles, and it is a supporting device for LDA or PIV. However, this generator is an unpressurized generator, and the tracer particles produced by it cannot be spread into a pressurized environment. , even due to the problem of condensation in case of condensation, it is impossible to use pipelines for remote transmission (for example, it is impossible to sow tracer particles into the stable section of the wind tunnel), which greatly limits the application range of equipment such as LDA and PIV

Method used

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  • Supercharged type tracer particle generator
  • Supercharged type tracer particle generator

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Embodiment

[0023] Such as figure 1 As shown, a pressurized tracer particle generator includes a smoke agent supply system 1, an evaporation chamber 2, a transmission pipeline 3, a two-way temperature control system 4, a valve 9, a pressure indicator 10 and a temperature sensor 11;

[0024] The smoke generator supply system 1 includes a gas source 5, a pressure reducing valve 6, a liquid storage bottle 7 and a needle valve 8;

[0025] The air source 5 produces compressed air of 0.8MPa, and the compressed air passes through the pressure reducing valve 6 to adjust its pressure to 0.2MPa, and then transmits the compressed air from the inlet and outlet of the liquid storage bottle 7 to the liquid storage bottle 7 through the pipeline, and at the same time passes through the pressure reducing valve 6. The compressed air is also transmitted to the evaporation chamber 2 through the pipeline; the flow rate of the liquid in the liquid storage bottle 7 is controlled by the needle valve 8 to be 20ml...

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Abstract

The invention relates to a tracer particle generator, in particular to a supercharged type tracer particle generator. The supercharged type tracer particle generator can be generally applicable to non-contact measurement of gas flowing speed, flow fields and the like. The structure of the supercharged type tracer particle generator is easy to achieve, operation is simple and convenient, a pressure pump is adopted to exert pressure on the whole particle generator, regulation can be conducted according to pressure in a measurement area, and the situation that particles can not flow along with gas flow because of being pressed; by the adoption of the full-conveying-section heating mode and the condensation backflow structure, remote conveying of tracer particles is achieved; smoke generation quantity is regulated by regulating a control valve, so that the supercharged type tracer particle generator can achieve more accurate regulation compared with a past particle generator.

Description

technical field [0001] The invention relates to a tracer particle generator. Specifically, it is a pressurized tracer particle generator. It can be generally applied to the non-contact measurement of gas flow velocity and flow field. Background technique [0002] In many fields such as aerospace, there are many times when it is necessary to understand the flow field and measure the flow rate of gas. There are various measurement methods for gas flow velocity, among which non-contact measurement methods have been developed in recent decades. Typical measurement devices include laser Doppler velocimetry (LDA), particle image velocity field instrument (PIV), etc., which have outstanding advantages It does not touch the flow field and does not interfere with the flow field, but for the air flow, a prerequisite must be met for its measurement, that is, tracer particles need to be added to the measured flow field. In many cases, the success of the tracer particle sowing directl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01P5/20
Inventor 王毅李亚晋李海燕
Owner BEIJING CHANGCHENG INST OF METROLOGY & MEASUREMENT AVIATION IND CORP OF CHINA
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