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Smoke field measurement device and method based on PIV system

A technology for measuring device and flue gas flow, which is applied in the direction of measuring device, machine/structural component testing, aerodynamic test, etc. It can solve the problem that the flow field of flue gas diffusion has not yet appeared, and achieve the effect of real-time measurement.

Inactive Publication Date: 2015-07-08
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although there are many devices for measuring the smoke flow field at home and abroad, the flow field of the smoke diffusion when the cigarette is burned using PIV technology has not yet appeared.

Method used

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  • Smoke field measurement device and method based on PIV system
  • Smoke field measurement device and method based on PIV system
  • Smoke field measurement device and method based on PIV system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A smoke flow field measurement device based on a PIV system, including a PIV system, the PIV system includes a circuit-connected host 16, a control panel 18, a laser generator 17, and a CCD camera 20, and also includes:

[0042] Combustion chamber, the combustion chamber is separated into the first combustion chamber 5 and the second combustion chamber 8 by the detachable partition plate 7, the middle of the partition plate 7 and the middle of the right side of the second combustion chamber 8 are provided with a center line at the same level The center hole of height, the left side of described first combustion chamber 5 is provided with opening 3, and the top is provided with first combustion chamber sampling port 4, and the top of described second combustion chamber 8 is provided with second combustion chamber sampling port 9;

[0043] The cylinder 11 is detachably arranged laterally on the right side of the second combustion chamber 8, including a piston 13 arranged i...

Embodiment 2

[0053] This embodiment adopts a method for measuring the smoke flow field based on the smoke flow field measuring device based on the PIV system provided in Example 1, which is used to measure the smoke flow field of the combustion smoke, including the steps:

[0054] (1) Select the shooting angle next to the first combustion chamber 5, place the laser generator 17 of the PIV system in front of the first combustion chamber 5, and place the CCD camera 20 on the side of the first combustion chamber 5, and the relative position is 90 degrees , using a single-channel filter;

[0055] (2) Remove the connection between the cylinder 11 and the second combustion chamber 8, insert and clamp the lit cigarette 6 from the center hole in the middle of the right side of the second combustion chamber 8, and connect the cylinder 11 and the second combustion chamber 8 at the same time;

[0056] (3) Pull the tension gauge 15 to the appropriate suction pressure and use the positioning magnet 19 ...

Embodiment 3

[0061] This embodiment adopts the method for measuring the smoke flow field based on the PIV system smoke flow field measuring device provided in Example 1, which is used to measure the smoldering smoke flow field, including steps:

[0062] (1) Select the shooting angle next to the first combustion chamber 5, place the laser generator 17 of the PIV system in front of the first combustion chamber 5, and place the CCD camera 20 on the side of the first combustion chamber 5, and the relative position is 90 degrees , using a single-channel filter;

[0063] (2) Pull the tension gauge 15 to an appropriate position to ensure that the mainstream smoke can diffuse in the cylinder 11 and there is enough space for shooting, remove the connection between the cylinder 11 and the second combustion chamber 8, light the cigarette 6 from the second combustion chamber 8 Insert the central hole in the middle of the right side and clamp it, and connect the cylinder 11 with the second combustion c...

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Abstract

The invention discloses a smoke field measurement device based on a PIV system. The smoke field measurement device comprises the PIV system, a combustion chamber, an air cylinder and supports. The PIV system comprises a host, a control panel, a laser generator and a CCD camera, wherein the host, the control panel, the laser generator and the CCD camera are in circuit connection with one another. The combustion chamber is separated into a first combustion chamber body and a second combustion chamber body through a detachable separation board, center holes are formed in the middle of the separation board and the middle of the right side of the second combustion chamber body, an opening is formed in the left side of the first combustion chamber body, and sampling ports are formed in the top of the second combustion chamber body and the top of the first combustion chamber body. The air cylinder is detachably and transversely arranged on the right side face of the second combustion chamber body, and an air cylinder sampling port is formed in the top of a cylinder body. The supports are arranged under the first combustion chamber body, the second combustion chamber body, the air cylinder and a tension meter in a supporting mode. The invention further provides a smoke field measurement method based on the PIV system. The smoke field measurement device and method can be used for measuring a smoke field in a smoking combustion state or a smoldering state, can also be used for collecting main stream smoke and side stream smoke, and have integration and multifunctionality.

Description

technical field [0001] The invention belongs to the technical field of gas measurement, and in particular relates to a device and method for measuring flue gas flow field based on a PIV system. Background technique [0002] At present, the methods for measuring the flue gas flow field are: (1) Acoustic velocity measurement method, the acoustic wave is a mechanical wave, and it is a longitudinal wave when propagating in a gas medium. The speed of sound is the propagation speed of small disturbances, and it has a linear superposition relationship with the flow velocity of the medium itself in the fluid. This is the theoretical basis for the measurement of the velocity field of the flue gas in the furnace by the acoustic wave method. (2) Velocimeter measurement method, which is convenient for observing and understanding the trajectory of airflow and jet range, etc., can obtain the velocity field direction map of airflow and measure the velocity value of airflow everywhere. Vel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/06
Inventor 曾劲松黄煌喻迪宋天雄戴亚汪长国陈昆燕
Owner SOUTH CHINA UNIV OF TECH
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