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A method, device and system for online detection of mass flow rate of high temperature fluid

A high-temperature fluid and mass flow technology, which is applied to mass flow measurement devices, indirect mass flow meters, etc., can solve the problems of low detection accuracy of high-temperature fluid mass flow and achieve real-time accurate measurement

Active Publication Date: 2022-02-18
CENT SOUTH UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The online detection method, device and system of high-temperature fluid mass flow provided by the present invention solve the technical problem of low detection accuracy of high-temperature fluid mass flow in the prior art

Method used

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  • A method, device and system for online detection of mass flow rate of high temperature fluid
  • A method, device and system for online detection of mass flow rate of high temperature fluid
  • A method, device and system for online detection of mass flow rate of high temperature fluid

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Embodiment 1

[0066] refer to figure 1 , the online detection method of high-temperature fluid mass flow rate provided by Embodiment 1 of the present invention, comprising:

[0067] Step S101, synchronously collect the frontal image of the high-temperature fluid in the forward direction and the lateral image in the lateral direction, and the forward direction and the lateral direction are orthogonal;

[0068] Step S102, performing image processing on the front image and the side image, obtaining a first region of interest corresponding to the front image and a second region of interest corresponding to the side image, and obtaining a cross-sectional area of ​​the high-temperature fluid according to the second region of interest;

[0069] Step S103, extracting high-temperature fluid streamlines according to the side image, and establishing a priori flow velocity distribution along the high-temperature fluid streamlines according to the high-temperature fluid streamlines;

[0070] Step S104,...

Embodiment 2

[0075] refer to figure 2 , the online detection method of high-temperature fluid mass flow rate provided by Embodiment 2 of the present invention, comprising:

[0076] Step S201, synchronously collect frontal images of the high-temperature fluid in the forward direction and lateral images in the lateral direction, and the forward direction and the lateral direction are orthogonal.

[0077] Specifically, in this embodiment, the front camera captures the frontal image corresponding to the positive direction of the high-temperature fluid, and the side camera captures the side image corresponding to the side direction of the high-temperature fluid, and the installation position of the front camera is orthogonal to the installation position of the side camera. When collecting frontal and side images in this embodiment, first determine the type selection of the industrial dual camera (i.e., the front camera and the side camera), install and fix the industrial dual camera on site an...

Embodiment 3

[0125] combined with Figure 4 And attached Figure 5 The situation of the specific embodiment of the present invention is further described, and the present invention is applied to a certain 2650m in China 3 On the blast furnace, in the casthouse on the blast furnace, all in accordance with image 3 with Figure 4 Installation method Install dual cameras. There are harsh environments such as high temperature and high dust on site. In order to ensure the stable operation of the dual cameras, it is necessary to install a protection device for the dual cameras. Specifically, the protection device uses air cooling to isolate a large amount of external heat radiation and take away the heat emitted by the dual cameras. The steps of specific implementation are as follows:

[0126] (1) According to the installation parameters of the dual cameras and field data, the cameras are calibrated to determine the relationship between the image coordinate system and the world coordinate sy...

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Abstract

The invention discloses an online detection method, device and system for the mass flow rate of high-temperature fluid. By synchronously collecting the frontal image of the high-temperature fluid in the positive direction and the side image in the side direction, image processing is performed on the front side image, and the high-temperature fluid is extracted according to the side image. According to the streamline of the high temperature fluid, the prior velocity distribution along the streamline of the high temperature fluid is established. The displacement field of the area of ​​interest is used to obtain the mass flow rate of the high-temperature fluid, which solves the technical problem of low detection accuracy of the mass flow rate of the existing high-temperature fluid. By synchronously collecting images in the positive and lateral directions of the high-temperature fluid, the cross-sectional area of ​​each point of the high-temperature fluid is calculated in real time. At the same time, the flow velocity and cross-sectional area of ​​the region of interest on the high-temperature fluid are acquired through the frontal image and side image collected in the orthogonal direction, so as to realize real-time and accurate measurement of the mass flow rate of the high-temperature fluid.

Description

technical field [0001] The invention mainly relates to the technical field of high-temperature fluid detection, in particular to an online detection method, device and system for high-temperature fluid mass flow. Background technique [0002] Accurate measurement of the mass flow rate of high temperature fluids is one of the fundamental requirements for optimizing industrial processes such as metal casting. However, measurement of molten fluid mass flow at a furnace presents many challenges, such as very high melt temperatures and irregular fluid geometries. At present, the mass flow rate of the molten fluid is measured in real time by using a load cell to measure the total mass of the molten fluid, but the weighing device will inevitably be damaged by the splashing high-temperature molten fluid, resulting in failure to work normally, high maintenance and labor costs, not only In this way, a certain impact force will be generated when the molten fluid flows into the contain...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F1/86
CPCG01F1/86
Inventor 蒋朝辉何磊徐勇桂卫华谢永芳沈宇航
Owner CENT SOUTH UNIV
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