Multi-point ignition multi-functional constant volume combustion device

Abstract

The invention discloses a multi-point ignition multi-functional constant volume combustion device which comprises a horizontal tubular constant volume bomb main body, wherein the radial top of the constant volume bomb main body is coaxially provided with cylindrical bosses and a sleeve mounting hole; two axial ends of the constant volume bomb main body are respectively provided with observation windows; the constant volume bomb main body is further equipped with a set of ignition electronic control system; 7 spark plug holes are evenly distributed in a same radial plane as the sleeve mountinghole; a plurality of accessory mounting holes are formed in an axial cross section of the bomb body; the observation windows at both ends have same structures; each observation window comprises a flange plate, glass bases, quartz glasses and glands which are sequentially connected; and each flange plate is in threaded connection with the constant volume bomb main body. The device provided by the invention mainly has the advantages that experimental studies such as mist spray, premixed laminar flow combustion, multi-point ignition and the like can be performed; the number, energy and positionsof ignition can be changed when multi-point ignition is preformed, and the ignition timing can be controlled; two sets of the observation windows are optimized and designed, and the observation windows can be switched according to the experimental content so as to achieve a best observation effect; and the device is easy to assemble and disassemble integrally and convenient to clean.

Description

technical field [0001] The invention relates to the technical field of power machinery combustion, and specifically refers to a constant-volume combustion device capable of carrying out various types of experimental researches such as premixed laminar combustion, fuel spray characteristics and multi-point ignition. Background technique [0002] At present, in order to save energy and reduce emissions of the engine, and improve thermal efficiency, internal combustion engine researchers have done a lot of research on improving the combustion process in the engine cylinder and strengthening the understanding of the fuel combustion mechanism, among which the spray characteristics of the fuel and its premixed laminar combustion data are obtained. It is a very important basic research. This part of the experimental research is usually carried out on a visual simulation experimental device. Constant volume incendiary bomb is a good engine combustion research simulation device, whi...

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Problems solved by technology

[0003] Traditional constant-volume incendiary bombs are mainly used in the study of premixed laminar combustion or fuel spray characteristics under single-point ignition, and are generally only suitable for one type of research. Moreover, traditional constant-volume incendiary bombs are rarely suitable for multi-point Fire Combustion Test Research

[0004] In addition, although traditional, especially cylindrical constant volume incendiary bombs have been sufficiently optimized in terms of the sealing of the optical observation window and experimental safety, they are often due to cleaning the inner cavity of the constant volume incendiary bomb and the glass viewing window. When the inner side of the mirror needs to be disassembled separately, for example, first remove the outermost flange gland, and then further remove the inner glass mirror and glass mounting seat

This method of separate disassembly and assembly will easily cause damage to the glass sight glass after repeated operations, and will also make the sealing of the optical observation window worse, which is not conducive to the smooth progress of the experiment.

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