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Method and apparatus for determining the phase compositions of a multiphase fluid flow

A multi-phase fluid and fluid technology, applied in the direction of measuring devices, using sound waves/ultrasonic waves/infrasonic waves to analyze fluids, liquid/fluid solid measurements, etc., can solve problems such as complex devices and time-consuming processes

Inactive Publication Date: 2020-02-28
SPIRAX SARGO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although throttling calorimetry can be used successfully to determine steam quality, the process is time consuming and the setup is relatively complex

Method used

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  • Method and apparatus for determining the phase compositions of a multiphase fluid flow
  • Method and apparatus for determining the phase compositions of a multiphase fluid flow
  • Method and apparatus for determining the phase compositions of a multiphase fluid flow

Examples

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Embodiment Construction

[0037] figure 1 Generally shown is an apparatus 10 for determining the phase composition of wet steam flowing in a steam line. In this particular embodiment, the device 10 is arranged to determine the dryness of the wet steam. Apparatus 10 includes a length of pipe 12 having connecting flanges 14 and 16 at both ends. The device 10 further comprises a vibration sensor 22 for acquiring vibration signals from the steam flow and an upstream fluid agitator 20 for agitating the steam flow.

[0038]The vibration sensor 22 is arranged in the pipe 12, downstream of the agitator 20 along the longitudinal direction of the pipe 12 and at the figure 2 shown in more detail. The vibration sensor 22 includes a hollow rod 34 extending into the pipe and a head 36 mounted to the end of the rod 34 and aligned with the axis of the pipe. The head 36 includes a body 37 and a substantially planar target 38 in the form of a diaphragm. The target 38 faces the vapor flow and lies in a plane perpen...

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Abstract

The invention relates to a method and an apparatus for determining the phase compositions of a multiphase fluid flow. To be specific, disclosed is a method for determining the phase compositions of amultiphase fluid flow in a fluid line. The method includes: obtaining a vibration signal from the fluid flow using a vibration sensor 22 comprising a target disposed in the fluid flow which vibrates in response to fluid flow in the fluid line; analyzing the vibration signal to determine a first energy parameter related to the energy of the vibration signal within a first frequency band, and a second energy parameter related to the energy of the vibration signal within a second frequency band; determining a phase composition parameter (for instance, dryness parameters) relating to the phase compositions of the fluid flow by using the first and second energy parameters. Also disclosed is an apparatus for determining the phase compositions of a multiphase fluid flow.

Description

[0001] This application is a divisional application of an invention patent application with the filing date of September 13, 2013, titled "Method and Device for Determining Phase Composition of Multiphase Fluid Flow", and application number 201310618423.5. technical field [0002] The present invention relates to methods and apparatus for determining the phase composition of multiphase fluid streams, in particular, but not exclusively, to methods and apparatus for determining the dryness of wet steam. Background technique [0003] The use of steam as a heating medium in industrial processes is very common. Most process and heating steam systems use saturated wet steam, which is a two-phase fluid containing steam as the first phase and condensate as the second phase. [0004] It is often necessary to know the dryness or quality of the wet steam. Vapor quality is the mass percentage of fluid, ie vapor, so saturated steam has a vapor quality of 100%, while saturated liquid has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/036
CPCG01N29/14G01N29/4427G01N29/46G01N2291/02425G01N2291/02845G01N29/222G01N29/42G01F1/74G01N29/036G01N29/02
Inventor B·弗里斯比N·伊斯拉姆P·亚瑟M·凯恩
Owner SPIRAX SARGO LTD
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