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Three-dimensional gas velocity field tester

A measuring instrument and flow velocity field technology, applied in the field of gas three-dimensional flow velocity field measuring instrument

Inactive Publication Date: 2012-09-19
JIANGSU HUISHUO SCI EQUIP INSTR
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Problems solved by technology

However, the above measurement methods can only measure the gas flow velocity in one-dimensional direction. There is no instrument for measuring the three-dimensional flow velocity field of gas on the market, and the flow direction of gas in reality is not all one-dimensional, especially in some complex areas. The three-dimensional velocity field of gas flow needs to be measured in the natural environment, so it is of great significance to design an instrument for the measurement of the three-dimensional velocity field of gas

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Embodiment Construction

[0014] exist figure 1 , install three identical hot wire sensor measuring devices (1), (2) and (3) on the same support (6) with the help of the lead wires and feet (5) of the hot wire sensor measuring device, and make the three Orthogonal to each other, respectively pointing to three mutually perpendicular directions. The measurement data obtained by the three hot wire sensor measuring devices are connected to the support (6) through their respective lead wires and feet (5), and then transmitted to the instrument host (8) through the cable (7) for processing.

[0015] exist figure 2 Middle: From the three-dimensional schematic diagram (a) of the shell of the hot wire sensor measuring device, it can be seen that the shell of the hot wire sensor measuring device of this measuring instrument is in the shape of an oblate spheroid, and there is a cylindrical air duct on the axis of the oblate spheroid. (4) Just horizontally on the diameter position in the middle of the air duct....

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Abstract

A three-dimensional gas velocity field tester adopts hot wire sensors as main elements, moreover, specially made shells are designed for the hot wire sensors, as a result, fabricated hot wire sensor measuring devices have clear directivity for the measurement of gas flow, the whole shell is shaped like an oblate spheroid, a cylindrical air passage is arranged along the axis of the oblate spheroid, and longitudinally runs through the whole oblate spheroid, and a hot wire is transversely arranged at the diameter position in the middle of the air passage. The three identical hot wire sensor measuring devices are then combined together, mounted on the same support, orthogonally arranged, respectively aimed at three directions perpendicular to one another and used for measuring the components of gas flow in three-dimensional directions, and the measured data of the components of gas flow in three-dimensional directions are then transmitted to an instrument host via a cable, and thereby the three-dimensional gas velocity field tester is formed.

Description

technical field [0001] The invention relates to an experimental instrument of fluid mechanics, in particular to a gas three-dimensional flow velocity field measuring instrument. Background technique [0002] Gas flow rate is an important physical quantity in fluid mechanics. There are many methods for measuring gas flow rate, including pitot tube method, orifice plate method, and hot wire sensor method. The hot wire sensor method is a widely used method for measuring the gas flow rate. It has the characteristics of simple structure of the measuring device, small size, fast measurement response speed, and convenient remote measurement. However, the above measurement methods can only measure the gas flow velocity in one-dimensional direction. There is no instrument for measuring the three-dimensional flow velocity field of gas on the market, and the flow direction of gas in reality is not all one-dimensional, especially in some complex areas. In the natural environment, it is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P5/10
Inventor 钱仰德周红兵
Owner JIANGSU HUISHUO SCI EQUIP INSTR
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