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device for measuring fluid velocity

A fluid and velocity technology, applied in the direction of measuring fluid velocity by using pressure difference, measuring device, fluid velocity measurement, etc., can solve the problems of dirt, pressure difference is not particularly significant, uncontrollable, etc., and achieve the effect of preventing dirt and stabilizing time characteristics

Inactive Publication Date: 2015-10-07
WOELKE INDUSTRIEELKTRONIK GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the pressure difference measured with the aforementioned Prandtl tube is not particularly significant, resulting in a loss in measurement accuracy
In addition, there is the fact that because of the occurrence of dynamic pressure measurements uncontrollable fouling occurs

Method used

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Embodiment Construction

[0031] The figure shows a device for measuring the velocity of a fluid 1 . Fluid 1 along with figure 2 The direction of flow indicated by the middle arrow flows through line 2. In an example of embodiment and in a non-limiting way, line 2 is a gas intake line 2 through which ventilation gas 1 is provided for subsequent use. The velocity of the fluid 1 in question, which in the example of the embodiment is the velocity of the ventilation gas 1 , is measured by means of a device which will be described in more detail below. The ventilation gas 1 is an air mixture in which, for example, a certain concentration of methane is present.

[0032] In order to be able to supply the air mixture or the ventilation gas 1 in a targeted manner for further use, e.g. as domestic gas, it is absolutely necessary to know not only the concentration of methane gas in the case of this example, but also the exact velocity of the fluid or ventilation gas 1 of. This has already been explained in t...

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PUM

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Abstract

The meter to measure the flow speed of a fluid, especially air in the suction channel of a mine ventilation system, has a probe (3) with at least two measurement points (4,5) for measurement of the different pressures. The probe has the shape of a spatial carrier surface profile with one measurement point at the leading edge (11) and the other at a side flank (12). The measurement points have entry openings into channels (6,7) to pressure sensors (8,9).

Description

technical field [0001] The invention relates to a device for measuring the velocity of a fluid, in particular an airflow in a suction line, with a probe comprising at least two measuring points for measuring a differential pressure. Background technique [0002] The fluid whose velocity is used as the probe object is generally a gaseous fluid. In principle, however, it is also possible to probe the velocity of liquid fluids or liquids by means of the device described below. As far as the velocity of the gaseous fluid is measured, the device in question is placed in the corresponding pipeline by means of a probe. This line may be a suction line such as is used in mine ventilation. Of course this need not necessarily be the case. [0003] Usable gases, preferably methane or methane / air mixtures, are present especially in mine ventilation, which can be provided for further use as domestic gas. In this case, however, it is necessary to know the outflow of methane gas. For t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01P5/165
CPCG01P5/16G01F1/46
Inventor 克里斯托弗·博默戈特纳
Owner WOELKE INDUSTRIEELKTRONIK GMBH