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High-pressure adjustable-temperature laser ignition experimental device

A technology of laser ignition and experimental equipment, which is applied in the direction of using combustion for chemical analysis, etc., can solve the problems that the ambient temperature cannot be adjusted, the temperature adjustment cannot be realized, and the experimental effect is affected.

Inactive Publication Date: 2014-12-17
NANJING UNIV OF SCI & TECH
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Problems solved by technology

Most of the laser irradiation experimental devices currently used for experimental research can realize the adjustment of pressure and gas composition, but cannot realize the adjustment of temperature, such as the laser-induced ignition of solid propellants for gas generators mentioned in the literature The ignition experimental device can adjust the pressure and gas composition, but the adjustment of the temperature can only be realized by changing the temperature of the propellant itself, and cannot adjust the temperature of the environment, which greatly affects the experimental effect and cannot satisfy further experiments. research needs

Method used

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Effect test

Embodiment 1

[0025]A high-pressure resistant and temperature-adjustable laser ignition experimental device includes a laser lens cooling device and a temperature-adjustable combustion chamber, and the laser lens cooling device is located at the top of the temperature-adjustable combustion chamber. The temperature-adjustable combustion chamber includes a combustion chamber top cover 1, a combustion chamber shell 2, a see-through window glass cover 3, a specimen support seat 4, a combustion chamber bottom cover 5 and a cavity sealing plate 6, and the combustion chamber shell 2 side walls There are two pairs of threaded holes and two perspective windows, the perspective window is sealed with a transparent window glass cover, the positions of the threaded holes and the perspective window are staggered; the top of the combustion chamber shell 2 and the combustion chamber top cover 1 pass through Bolt connection, the top of the combustion chamber housing 2 is provided with an annular groove, and ...

Embodiment 2

[0027] combine Figure 1 ~ Figure 2 :

[0028] A high-pressure resistant and temperature-adjustable laser ignition experimental device includes a laser lens cooling device and a temperature-adjustable combustion chamber, and the laser lens cooling device is located at the top of the temperature-adjustable combustion chamber. The temperature-adjustable combustion chamber includes a combustion chamber top cover 1, a combustion chamber shell 2, a see-through window glass cover 3, a specimen support seat 4, a combustion chamber bottom cover 5 and a cavity sealing plate 6, and the combustion chamber shell 2 side walls There are three pairs of threaded holes and two perspective windows on the top. The threaded holes are used to install external equipment such as thermometers, pressure gauges, and intake pipes. When not in use, the threaded holes are plugged with screw plugs for backup, and the perspective windows are sealed. There is a transparent window glass gland, and the positi...

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Abstract

The invention discloses a high-pressure adjustable-temperature laser ignition experimental device, comprising a laser lens cooling device and an adjustable-temperature combustion chamber; the adjustable-temperature combustion chamber comprises a combustion chamber top cover, a combustion chamber shell, a glass gland, a test piece support seat, a combustion chamber bottom cover and a cavity sealing plate; the laser lens cooling device comprises a water cooler outer shell, a lens clamp ring, a water cooler inner shell and a laser focus lens; according to the high-pressure adjustable-temperature laser ignition experimental device, the sealed combustion chamber and the combustion chamber bottom cover with a cavity are used for solving the problem that the laser ignition experimental device cannot achieve adjustment on pressure, temperature and gas composition; due to the structure that a laser lens, an O-shaped ring and the lens clamping ring are respectively arranged at the two-stage stepped hole section and the threaded hole section at the center of the water cooler inner shell, the problem that detachability and leakproofness of the laser lens cannot be achieved at the same time; different environmental parameters are provided for laser irradiation experiments, experimental cost is saved, and experimental contents are enriched.

Description

technical field [0001] The invention belongs to the field of material ignition combustion or ablation performance experiment research, in particular to a laser irradiation experiment device. Background technique [0002] In the study of the ignition and combustion performance of solid propellants, although there are many ignition methods, the laser as a radiation source can be independent of initial temperature, pressure and gas composition because of its high output energy, adjustable irradiation time and output energy. Environmental parameters such as energy density are selected, which reduces heat loss and non-uniform effects during the experiment, has good repeatability, anti-electromagnetic interference and other advantages, and has become a new ignition method for solid propellants at home and abroad. In the research process of laser irradiated materials, it is not enough to just change the laser energy density and irradiation time. It is also necessary to study the in...

Claims

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Application Information

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IPC IPC(8): G01N31/12
Inventor 王鸿丽陈雄许进升郑健周长省王鸿美薛海峰
Owner NANJING UNIV OF SCI & TECH
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