A manufacturing method of airflow probe based on additive manufacturing
A technology of additive manufacturing and manufacturing methods, applied in the direction of measuring fluid pressure, instruments, measuring devices, etc., can solve problems affecting the measurement accuracy and measurement range of airflow probes, mechanical manufacturing failure of airflow probes, difficulties in making airflow probes, etc. , to achieve the effect of avoiding precision welding technical problems, low strength requirements, and reducing production costs
Active Publication Date: 2019-02-15
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology
The welding accuracy directly affects the measurement accuracy and measurement range of the airflow probe, so the mechanical manufacturing of the airflow probe often fails
This leads to difficult, high cost and few suppliers for airflow probes
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[0036] In order to make the purpose and technical solution of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that the following descriptions are only preferred embodiments of the present invention, and therefore do not limit the protection scope of the present invention.
[0037] Example The airflow probe is in the form of a seven-hole probe, and the shape is a broken line, such as figure 1 As shown, the airflow probe includes three parts: the probe precursor 1, the airflow conduit 2 and the probe rear body 3, and the angle between the probe precursor and the probe rear body is 20°. Among them, the probe precursor adopts the additive manufacturing method, and the material is photosensitive resin. The probe body 3 is made of a pipe with an outer diameter of 12 mm and an inner diameter of 10 mm. The airflow conduit 2 is made...
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Directing at the characteristics of a small airflow probe size and a low strength requirement, and combined with the advantage of convenience of additive manufacture of a complex structure, the invention discloses an airflow probe manufacturing method based on additive manufacture. An airflow probe includes a probe front body, a probe rear body and an airflow conduit, wherein the probe front body adopts an additive manufacture method, the rear body and the airflow conduit selects corresponding pipes according to actual needs, the technical problem of precise welding in a traditional airflow probe machinery manufacture can be effectively avoided, the difficulty of airflow probe processing and manufacturing is lowered, the manufacturing cost of the airflow probe is reduced, the manufacturing cost and period are substantially reduced, and thus the airflow probe manufacturing method is conveniently applied to manufacture of airflow probes in various forms and various shapes.
Description
technical field [0001] The invention relates to the technical field of fluid measurement, and more particularly to a method for manufacturing an airflow probe based on additive manufacturing. Background technique [0002] Airflow probes are widely used in the field of fluid measurement. Depending on the type of probe, different parameters of the measured position can be obtained. For example, the Pitot tube can measure the total pressure, static pressure and velocity of the local incoming flow; the five-hole probe can obtain The local flow total pressure, static pressure and velocity are three components, and the measurement range of the flow velocity direction is about ±40°; the seven-hole probe can also obtain the local flow total pressure, static pressure and velocity three components, but the flow velocity direction measurement Range up to ±70°. Generally speaking, probes with relatively complex structures can obtain a wider range of incoming flow parameters. At the sa...
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IPC IPC(8): G01L11/00
CPCG01L11/00
Inventor 武广兴朱伟军
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI