Coriolis mass flow meter

A technology of mass flowmeter and Coriolis, which is applied in the direction of direct mass flowmeter, mass flow measurement device, measurement flow/mass flow, etc., and can solve problems such as difficulty in accurate measurement

Inactive Publication Date: 2004-07-14
OVAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As shown in the two states of the vertical vibration of the flow tube in Fig. 6(B), the vibration nodes th...

Method used

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  • Coriolis mass flow meter
  • Coriolis mass flow meter
  • Coriolis mass flow meter

Examples

Experimental program
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Embodiment Construction

[0023] Figures 1 to 4 A first embodiment of the arcuate tube type Coriolis mass flowmeter of the present invention employing two parallel arcuate flow tubes is described. The Coriolis mass flowmeter shown can be used in either a vertical or horizontal orientation, and when used in a horizontal orientation, the raised portion in the middle of the flow tube can be positioned either up or down. It should be noted, however, that when used to measure gases, the raised portion of the flow tube is preferably positioned upward, as shown, to prevent liquid from becoming lodged in the raised portion, and when used to measure liquids, the raised portion Position the part downwards to prevent air bubbles from becoming trapped there.

[0024] Figures 1 to 4 Shown is a Coriolis mass flow meter of the present invention; figure 1 It is a partially sectioned front view (as shown on the left) and a side view cut at the main pipe (as shown on the right) when the inlet and outlet pipes are i...

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PUM

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Abstract

Two flow tubes 1 and 2 of a Coriolis mass flow meter are formed into an arch shape, with the tubes bent in only one direction. Entry-side and exit-side manifolds 25 are smoothly bent from the inlet of the entry-side manifold and the outlet of the exit-side manifold to joints connecting the two flow tubes to the manifolds, and connected to the flow tubes 1 and 2 at the joints at a predetermined angle in the same direction. By making the flow tubes into a parallel arched tube structure having good stress distribution and shock resistance, effects on the flow meter of external oscillations, installation conditions, piping stresses and thermal stresses can be reduced.

Description

technical field [0001] The present invention relates generally to a Coriolis flowmeter, and more particularly to a Coriolis mass flowmeter employing two parallel arcuate flow tubes. Background technique [0002] The working principle of the mass flowmeter (Coriolis mass flowmeter) is such that when the two ends of the pipeline carrying the flow fluid to be measured are supported, and the pipeline vibrates around the support fulcrum perpendicular to the direction of fluid flow, the It is well known that the Coriolis force onto the pipe (hereinafter, the pipe to which the vibration is applied is referred to as the flow tube) is proportional to the fluid mass flow. Flow tubes for Coriolis mass flow meters are of two types: bent and straight. [0003] Fig. 5 is a schematic diagram of a conventional two-parallel elbow type Coriolis mass flowmeter. As shown, the flow tubes 1 and 2 consist of two parallel bent tubes (U-shaped tubes) driven in their middle by a drive unit 15 compr...

Claims

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Application Information

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IPC IPC(8): G01F1/84
CPCG01F1/8409G01F1/8477G01F1/8413G01F1/84
Inventor 中尾雄一丝康助村典郎小林诚司
Owner OVAL CORP
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