Experiment device for researching jet atomizing characteristic of jet nozzle

A technology of atomization characteristics and experimental device, applied in the field of experimental device, can solve the problems of low temperature and pressure, waste of research on atomization characteristics of nozzle injection, inconvenience, etc., and achieve the effects of simple operation, flexible and diverse testing, and convenient maintenance.

Inactive Publication Date: 2011-04-27
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the experimental research under low-speed and low-temperature conditions cannot simulate the working environment of the nozzle of the gas-steam launch power plant, and most of them are carried out for a single nozzle; the experimental research using the supercombustion test bench can provide superson...

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  • Experiment device for researching jet atomizing characteristic of jet nozzle
  • Experiment device for researching jet atomizing characteristic of jet nozzle
  • Experiment device for researching jet atomizing characteristic of jet nozzle

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Embodiment

[0027] Refer to attached figure 1 , An experimental device for studying nozzle injection atomization characteristics established in this embodiment includes a water supply system 1 , a gas generator 2 , an experimental test section 3 , a data acquisition system 4 , a high-speed camera system 5 and a timing control igniter 6 . Water supply system 1 is an extrusion water supply system, which uses high-pressure nitrogen as the extrusion source. The extrusion pressure of the extrusion gas is obtained by adding the theoretical gas pressure in the experimental test section and the extrusion pressure during cold adjustment. The extrusion pressure is expressed as In the formula is the mass flow rate of water; ρ is the density of water; n is the number of nozzles; C d is the nozzle flow coefficient; r is the radius of the nozzle orifice, and the theoretical gas pressure in the experimental test section 3 is based on the working pressure and flow rate of the gas generator 2 and the ...

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Abstract

The invention provides an experiment device for researching the jet atomizing characteristic of a jet nozzle. The experiment device can provide a fuel gas environment similar to a fuel gas-vapor type launch power device, simulate the pressure intensity, the temperature, the speed and other parameters of airflow behind the jet nozzle, provide various test interfaces including a conventional test means and a non-contact test means; and in addition, the experiment device can obtain the jet atomizing characteristic of a jet nozzle for the researches on primary atomizing of cooling water at the outlet of the jet nozzle, secondary atomizing and vaporizing of the cooling water in lateral high-speed flue gas flow, water-vapor two phase flow with phase changes and other complicated flowing processes in the fuel gas-vapor type launch power device used for underwater launch, and provide a theoretical basis for the design of the fuel gas-vapor type launch power device.

Description

technical field [0001] The invention relates to an experimental device, in particular to an experimental device for studying the atomization characteristics of spray nozzles. Background technique [0002] In the gas-steam launch power plant launched underwater, there is a turbulent flow of high-temperature and high-pressure gas to form a cooling water jet. The cooling water jet is atomized at the outlet of the nozzle and secondary atomized and vaporized in the horizontal high-speed gas flow. , complex flow processes such as water and steam two-phase flow with phase transitions. The secondary atomization and vaporization of the cooling water injected by the nozzle in the horizontal high-speed gas flow and the phase change process have an important impact on the energy characteristics and external work ability of the gas-steam launch power plant. [0003] At present, the methods for studying the secondary atomization and vaporization of the cooling water injected by the nozzl...

Claims

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Application Information

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IPC IPC(8): G01M13/00
Inventor 魏祥庚吕翔李江何国强陈剑彭丽娜
Owner NORTHWESTERN POLYTECHNICAL UNIV
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