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Method and measuring device for determining the compressibility of a flowing fluid

A technology for flowing fluids and measuring devices, which can be used in mass flow measuring devices, measuring devices, liquid/fluid solid measurement, etc., and can solve problems such as not being directly available

Active Publication Date: 2021-06-11
ENDRESS HAUSER FLOWTEC AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in many cases it is not directly available

Method used

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  • Method and measuring device for determining the compressibility of a flowing fluid
  • Method and measuring device for determining the compressibility of a flowing fluid
  • Method and measuring device for determining the compressibility of a flowing fluid

Examples

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Embodiment Construction

[0031] Embodiment of method 1 of the present invention figure 1 The illustrated example comprises: in a first step 10, recording a first density measurement ρ of the flowing fluid 1 and the associated first pressure measurement p 1 , where, through the first flow resistance R relative to the throttling device with variable flow resistance 1 Pumping the fluid creates a first pressure of the flowing fluid.

[0032] After recording the first density measurement ρ 1 and the associated first pressure measurement p 1 Then, in the second step 20, at the second flow resistance R of the throttling device 2 Recording a second density measurement ρ of the flowing fluid occurs when 2 and the associated second pressure measurement p 2 , where the first flow resistance is different from the second flow resistance. In the case of an essentially constant volume flow of the fluid through the throttling device, correspondingly different values ​​of the first static pressure and of the se...

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Abstract

A method (1) for determining the compressibility of a flowing fluid comprising the steps of: driving the volume flow of the fluid by means of a pump through at least one measuring tube of a vibrating densitometer at a first pressure maintained by means of a throttle valve; determining a first density measurement (10) of the flowing fluid at a first pressure; determining (10) a first pressure measurement of the flowing fluid at a first pressure; at a second pressure maintained by a throttle valve, Driving the volumetric flow rate of the flowing fluid with a pump through a density meter; determining a second density measurement (20) of the fluid at a second pressure different from the first pressure; determining a second pressure of the flowing fluid at the second pressure Measurements (20); the composition of the fluid does not change between detection of the first density measurement and said second density measurement, based on the first density measurement, the second density measurement, the first pressure measurement, and A second pressure measurement is used to determine the compressibility of the fluid (30).

Description

technical field [0001] The invention relates to a method for determining the compressibility of a flowing fluid. Background technique [0002] Under reference conditions, especially at a reference pressure of 1013 MPa, the density of the fluid is meaningful for evaluating the fluid. However, in many cases it is not directly available. One solution is to calculate the density at a reference pressure from density measurements recorded at higher pressures. In order to be able to perform this calculation reliably, as precise as possible knowledge of the compressibility is required. Contents of the invention [0003] It is therefore an object of the present invention to provide a method and a measuring device which make it possible to determine the compressibility of a fluid as simply and reliably as possible, in particular for determining the density of a medium at a reference pressure. [0004] The object of the present invention is achieved by the method and device of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N9/00G01N9/26G01F1/84G01F15/00G01F15/02G01F1/44G01F1/88G01F5/00
CPCG01N9/002G01F5/005G01F15/005G01N9/26G01F1/44G01F1/84G01F1/88G01F15/001G01F1/36
Inventor 克里斯托夫·胡伯米歇尔·兰布里格
Owner ENDRESS HAUSER FLOWTEC AG
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