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Special-shaped cavity flow meter

A flowmeter and special-shaped cavity technology, which is applied in fixed measurement chambers and other directions, can solve the problems of strong measurable medium restriction, easy noise generation, poor safety, etc., and achieves low production and maintenance costs, reliable work, good safety effect

Inactive Publication Date: 2008-03-26
ZHEJIANG UNIV
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Problems solved by technology

In addition to high measurement accuracy, positive displacement flowmeters also have the advantages of being suitable for high-viscosity liquid measurement, wide flow range, and pipeline installation conditions do not affect measurement accuracy. The disadvantages of strong medium restriction, easy to generate noise, possible pulsation, possible reversal, poor safety (easy to be stuck), etc., make its practical application have great limitations

Method used

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Embodiment Construction

[0020] Refer to Figures 1 to 9. The special-shaped cavity flowmeter provided by the present invention includes a cavity body 1 with a special-shaped cylindrical inner cavity, an inlet 6, an outlet 7 and a diversion groove 34, and a lower cover plate 31 and an upper cover installed on both ends of the cavity body 1. The sealed cavity formed by the plate 32 is installed with a rotor assembly in the sealed cavity. The rotor assembly is composed of a cylindrical rotor 2 with a cross guide groove and a first combined slide plate 3, a second combined slide plate 4 and a permanent magnet 5; The assembly cooperates with the bearing holes 33 on the upper and lower cover plates through the lower centering shaft 15 and the upper centering shaft 16 on the rotor, and the upper and lower centering shafts of the rotor are coaxial with the cylindrical body of the rotor, (see Fig. 1 and Figure 2). The special-shaped cylindrical inner cavity of the cavity 1 is composed of a semicircular arc su...

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Abstract

The invention discloses a shaped-chamber flowmeter including the seal cavity with the shaped-cylinder lumen, the inlet, the outlet and training slot. The rotor units composed by the decussation training slot, the first combination sliding plate, the second combination sliding plate and the permanent magnet is installed in the seal cavity. The shaped-chamber is composed of the semicircular contour, the 1 / 4 circular contour and 1 / 4 ellipse contour, which are all in same axis. The radius of semicircular contour and the 1 / 4 circular contour is equal to the semi-major axis and the semi-minor axis of 1 / 4 ellipse contour respectively. Two groups of sliding plates are installed in the decussation training slot. The rotor is in the same axis with each contour of lumen, the radius is equal to the radius of 1 / 4 circular contour, which are slip fit and rotate combined with the combination sliding plate and cavity wall under the flux pressure error. The two sliding plates slide in cross under the work of the 1 / 4 ellipse contour. The rotor rotates by one circle which mean that there has the equal fluid flow through the cavity, so it can reach the fluid meter.

Description

technical field [0001] The invention relates to a special-shaped cavity flowmeter, which belongs to the technical field of sensors and measurement. Background technique [0002] Flowmeters are very important measuring instruments in industrial production, commercial trade and many other fields. According to different structures and working principles, flowmeters can be roughly divided into positive displacement flowmeters, differential pressure flowmeters, rotameters, and mass flowmeters. meter, turbine flowmeter, vortex flowmeter, electromagnetic flowmeter, ultrasonic flowmeter and other types. Among them, the volumetric flowmeter is generally considered to be the flowmeter with the highest measurement accuracy. In addition to high measurement accuracy, positive displacement flowmeters also have the advantages of being suitable for high-viscosity liquid measurement, wide flow range, and pipeline installation conditions do not affect measurement accuracy. The disadvantages...

Claims

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Application Information

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IPC IPC(8): G01F11/44
Inventor 鲁阳
Owner ZHEJIANG UNIV
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