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Boron particle laser ignition burning experiment device and experiment method

A technology of laser ignition and experimental equipment, which is applied in measuring equipment, chemical analysis by means of combustion, material analysis by optical means, etc. It can solve problems such as weak flame brightness, large particle size, and unreliable observation of the ignition process

Active Publication Date: 2019-10-15
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

This device can facilitate the ignition of solid propellants and measure the ignition delay period of solid propellants, but for granular substances, the flame brightness is too weak, and the ignition process cannot be reliably observed with one observation window, and because the diode probe is larger than the particle size , causing the device to fail to accurately measure the ignition delay period

Method used

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  • Boron particle laser ignition burning experiment device and experiment method
  • Boron particle laser ignition burning experiment device and experiment method
  • Boron particle laser ignition burning experiment device and experiment method

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Embodiment Construction

[0026] This embodiment is a boron particle laser ignition combustion experimental device and experimental method.

[0027] See Figure 1(a) Figure 1(b) ~ Figure 3 , In this embodiment, a boron particle laser ignition combustion experiment device includes a burner top plate 1, plexiglass 3, a window pressure screw 4, a burner bottom plate 5, a sealing electrode 6, a spare electrode 7, germanium glass 8, germanium glass window pressure Screw 9, sealing ring 10, burner 2 and burner feeding mechanism; wherein, burner 2 and burner top plate 1, burner bottom plate 5 are fastened by bolts, burner 2 and burner top plate 1, burner bottom plate 5 A sealing ring 10 is embedded between them, and the opposite parts of the side wall of the burner 2 are provided with a germanium glass laser incident window and a plexiglass observation window, which are respectively embedded in the germanium glass 8 and plexiglass 3, and screwed into the corresponding germanium glass window pressing screw 9 ...

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Abstract

The invention discloses a boron particle laser ignition and burning experiment device and an experiment method and relates to the technical field of a solid engine experiment. The experiment device and a high speed camera are mounted at calibration locations. According to the experiment device, electromagnet of an automatic drug feeding mechanism matches with a drug storage hopper; boron particlesin the drug storage hopper are controlled to drop uniformly in a discrete state according to preset time through utilization of an external voltage signal; in shrinkage of the electromagnet of the drug feeding mechanism, the boron particles drop and pass through laser beams; laser ignition of the boron particles in a movement process under a state of sufficiently contacting with atmosphere is realized; the high speed camera is powered on to start collecting an image; and synchronization of a laser ignition process of the boron particles and an image collection process of the high speed camerais ensured. The experiment device is simple and reliable in structure. The experiment method is rapid and convenient. Laser ignition and burning of the boron particles in the movement are realized under the state of sufficiently contacting with the atmosphere. Image information collection and recording can be carried out on a whole experiment process.

Description

technical field [0001] The invention relates to the technical field of solid rocket motor experiments, in particular to a boron particle laser ignition combustion experiment device and an experiment method. Background technique [0002] At present, the ignition methods used to study the ignition and combustion performance of boron particles mainly include shock tube ignition, flat flame burner ignition, Bunsen furnace ignition, laser generator ignition, etc. Among them, laser ignition has high ignition temperature and fast heating rate. , good stability, strong anti-interference ability, and high safety are widely used. However, the boron ignition combustion experimental device using the laser ignition method generally adopts the method of statically stacking boron particles and then igniting. This ignition method will lead to The problem of uneven contact between boron particles and the surrounding atmosphere and the stacking of multiple particles. [0003] Invention paten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/12G01N21/84
CPCG01N31/12G01N21/84
Inventor 胡松启杨朋袁新钊刘林林张研
Owner NORTHWESTERN POLYTECHNICAL UNIV
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