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High-pressure-resistant visual window suitable for optical measurement of oil sprayer with wide spraying hole included angle

An optical measurement and fuel injector technology, applied in measuring devices, material analysis through optical means, instruments, etc., can solve the problem of wide nozzle angle fuel injector measurement, constant volume bomb window area is limited, and the strength is difficult to obtain Guarantee and other issues, to achieve the effect of simple structure, good adaptability and easy processing

Active Publication Date: 2021-11-02
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The present invention is in order to solve the problem that when using the PLIF method to study the spray combustion characteristics of porous fuel injectors, it is difficult to measure the spray of wide nozzle hole angle fuel injectors due to the limited window area of ​​constant volume bombs, and the window area is too large and the window strength is too large. Technical problems that are difficult to be guaranteed, to adapt to the research work of different fuel injection strategies under higher temperature and pressure indicators

Method used

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  • High-pressure-resistant visual window suitable for optical measurement of oil sprayer with wide spraying hole included angle
  • High-pressure-resistant visual window suitable for optical measurement of oil sprayer with wide spraying hole included angle
  • High-pressure-resistant visual window suitable for optical measurement of oil sprayer with wide spraying hole included angle

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specific Embodiment approach 1

[0042] Specific implementation mode one: see Figure 1-7 This embodiment will be described. In order to continuously withstand the test conditions of high temperature and high pressure, the size of the quartz glass window of the constant volume bomb is very limited. The side window of the traditional constant volume bomb is arranged parallel to the axis of the bomb body, so the adjustable angle range of the incident light is very small, and it is difficult to adapt to wide spraying. Test conditions for angled orifice injectors.

[0043] In view of the above problems, the present invention proposes a high-pressure-resistant visual window design suitable for porous injectors with a wide range of nozzle angles. The constant-volume bombs have different installation methods according to experimental needs. Here, the PLIF method is used to measure Take the installation method including a main window and a side window as an example, and describe the assembly relationship of the cons...

Embodiment 1

[0054] The constant volume projectile body 1 is a hexahedral structure, the bottom surface is connected to the base, the top surface is connected to the intake and exhaust and preheating devices, and the side is connected to the corresponding window and fuel injector according to the experimental needs. The sleeve 4-1 and the end cover 8-1 of the side view window are connected to the constant volume bomb body 1 through 10 connecting bolts 9; Ring 7-1 is sealed, the stepped surface inside the sleeve 4-1 cooperates with the quartz glass window 3-1 through the graphite gasket 2-1, and the centering O-ring 5-1 is used for the radial positioning of the quartz glass window 3-1 , to ensure that the quartz glass window 3-1 is always in the central position of the sleeve 4-1, the entire side of the quartz glass window 3-1 communicates with the cavity of the constant volume bomb through the bypass hole 4-4 provided on the sleeve, Used to balance the air pressure on the bottom and side o...

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Abstract

The invention discloses a high-pressure-resistant visual window suitable for optical measurement of an oil sprayer with a wide spraying hole included angle. A sleeve boss surface of the visual window is matched with a constant volume bomb body, the middle of the sleeve boss surface is sealed by an additional O-shaped ring, an inner step surface of a sleeve is matched with a quartz glass window, and the axis of the quartz glass window is not perpendicular to the axis of the constant volume bomb body; a centering O-shaped ring is used for radially positioning the quartz glass window, a bypass hole is formed in the sleeve, the whole side face of the quartz glass window is communicated with a cavity of the constant volume bomb body through the bypass hole formed in the sleeve and used for balancing air pressure on the bottom face and the side face of quartz glass, and the quartz glass window is locked between the sleeve and the end cover through a plurality of short bolts. The visual window is advantaged in that technical problems that when a PLIF method is used for studying the spray combustion characteristics of the porous oil sprayer, spray of the wide-spray-hole-included-angle oil sprayer is difficult to measure due to the fact that the window area of a constant-volume bomb is limited, and the window strength is difficult to guarantee due to the fact that the window area is too large are solved, the service life is prolonged, and the safety coefficient is increased.

Description

technical field [0001] The invention relates to a high-pressure-resistant visual window suitable for optical measurement of a fuel injector with a wide nozzle angle, and belongs to the technical field of heat engines. Background technique [0002] The current energy crisis and environmental pollution problems are becoming increasingly prominent, and the development of the internal combustion engine industry is facing unprecedented challenges. However, due to its good economy, convenience and reliability, the internal combustion engine cannot find a perfect substitute product in a short period of time, and it is still the main force in the power industry. In order to further improve the performance of the internal combustion engine and make it more adaptable to the current development trend, the analysis and improvement of the spray combustion process of the internal combustion engine play a vital role, and the experimental data of the spray combustion in the cylinder of the ...

Claims

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Application Information

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IPC IPC(8): G01N21/01G01N21/03G01N21/09
CPCG01N21/01G01N21/0303G01N21/0317G01N21/09G01N2021/0112G01N2021/0378G01N2021/0396Y02T10/12
Inventor 刘龙谷祥根刘岱王洋刘世海祁海成刘佰慧刘俊杰
Owner HARBIN ENG UNIV
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