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Volumetric fluid meter

A liquid flow meter, flow meter technology, applied in liquid/fluid solid measurement, measurement capacity, volume measurement, etc., can solve the problem of uneven discharge speed of solid particles

Inactive Publication Date: 2007-10-17
ITRON FRANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] However, its use has created some problems, in the case of heavy "trash" water, the discharge rate of solid particles is not always sufficient

Method used

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Embodiment Construction

[0038] Identical parts appearing in more than one figure are denoted by the same reference numerals in all the figures in which they appear.

[0039] Fig. 1 has been described in the part connected with the prior art.

[0040] Fig. 3 is a plan view of a flow meter according to the present invention. Fig. 2 is a longitudinal sectional view of the same flowmeter according to the present invention along line AA in Fig. 3 .

[0041] For the sake of clarity, the plunger 11 and cap 3 shown in FIG. 2 are intentionally omitted from FIG. 3 .

[0042] The side wall 2 of the measurement chamber comprises a vertical slot 16 passing through the side wall 2 . The vertical slot 16 is tangential to the fixed barrier 9 between the inlet 7 (not shown) and the outlet 8 and, as shown in FIG. 3 , is on the same side of the barrier 9 as the outlet 8 . The width of the slot 16 is less than or equal to 3 mm, and its height is approximately equal to the height of the fixed barrier 9 .

[0043] The...

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Abstract

The invention relates to the technical field of oscillating piston volumetric fluid meters. The meter comprises a cylindrical measuring chamber including a lateral wall ( 2 ), a bottom ( 1 ) and a lid ( 3 ), a lower cylinder ( 4 ) and an upper cylinder ( 5 ) having the same diameter, which is less than the diameter of said chamber, an inlet orifice and an outlet orifice ( 8 ) for respectively admitting fluid to and evacuating fluid from said chamber, a cylindrical piston ( 11 ) disposed eccentrically and guided kinematically in said chamber and effecting an oscillatory movement in said chamber ( 30 ) as a result of the displacement of a volume of fluid, and a fixed partition ( 9 ) between said inlet orifice and said outlet orifice ( 8 ), lying radially between said lateral wall ( 2 ) and said lower and upper cylinders ( 4, 5 ), and lying axially between said bottom ( 1 ) and said lid ( 3 ), said lateral wall ( 2 ) including a vertical cavity ( 16 ) in the vicinity of said fixed partit ion ( 9 ). Said cavity ( 16 ) is separate from said inlet and outlet orifices and passes through said lateral wall at least partly within the height of said wall.

Description

technical field [0001] The invention relates to a volumetric liquid flow meter, which is suitable for measuring the flow of liquid in a pipe. Background technique [0002] In particular, the present invention relates to oscillating plunger positive displacement liquid flow meters, which are well known to those skilled in the art. [0003] As shown in an exploded perspective view in FIG. 1, a prior art meter of the type described above includes a metering box. [0004] In this type of meter the measuring box is the key element on which the accuracy of the flow measurement depends, the measuring box being a cylindrical cavity 30 with a bottom 1 , side walls 2 and a cover 3 . The bottom 1 and the cover 3 respectively comprise a lower cylinder 4 and an upper cylinder 5, having the same diameter smaller than the diameter of the cavity. The centers of these two cylinders 4, 5 are aligned with the axis of the cavity. The lower cylinder has at its center a metal rod 20 on which a...

Claims

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Application Information

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IPC IPC(8): G01F3/08G01F15/12
CPCG01F3/08G01F15/12
Inventor 弗雷德里克·德鲁瓦恩洛朗·德米亚
Owner ITRON FRANCE
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