Experimental device and method for measuring laminar combustion velocity of liquid fuel with pressure stabilizing function
A technology of liquid fuel and laminar combustion, which is applied in chemical analysis by means of combustion, etc. It can solve the problems of constant volume incendiary bomb pressure increase, safety impact, and difficulty in selecting test data, so as to achieve rapid pressure stability and ensure safety , the effect of expanding the selection range
Inactive Publication Date: 2018-10-19
ZHEJIANG UNIV
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Problems solved by technology
[0004] There are currently two shortcomings in this method: 1) during the fuel combustion process, the internal pressure of the constant volume incendiary bomb will rise sharply, which has a greater impact on the safety of the test, so the device material needs to have good high pressure resistance; 2) In the process of data processing, it is usually necessary to select the data within the constant pressure range at the initial stage of combustion to calculate the laminar combustion velocity, but because the pressure is kept constant for too short a time, it has caused certain difficulties in the selection of test data
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[0017] Such as figure 1 As shown, an experimental device for measuring the laminar combustion velocity of liquid fuel with a voltage stabilizing function includes a constant volume incendiary bomb 6, an electrode wire 8, a high-speed schlieren imaging system 1, a thermocouple 3, a pressure gauge 9, and a four-way pneumatic joint 5. Main four-way pneumatic joint 14, high-pressure hose 7, intermediate high-pressure hose 12, main high-pressure hose 13, pilot safety valve 4, pressure box 10, heating device 2, fuel injection valve 11;
[0018] The constant-volume incendiary bomb 6 is a cube. Except for the two faces with windows, the remaining four faces are provided with four internally threaded holes. The high-pressure rubber hose 7 is connected with the constant-volume incendiary bomb through the internally threaded holes. The high-pressure hose 7 is connected with a four-way pneumatic joint 5 and an intermediate high-pressure hose 12, and the four intermediate high-pressure hos...
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An experiment apparatus having a pressure stabilizing function and used for measuring the laminar flow burning rate of liquid fuel and a method thereof are disclosed. The apparatus includes a constant-volume incendiary bomb, platinum wire electrodes, a high-speed schlieren imaging system, a thermocouple, pressure gauges, four-way pneumatic connectors, high-pressure hoses, pilot-actuated safety valves, a pressure tank, a heating device and a fuel injecting valve. The apparatus can ensure that the pressure in the constant-volume incendiary bomb is constant in a whole experiment process, and can ensure safety of experiments under high-pressure conditions.
Description
technical field [0001] The invention belongs to the field of research on fuel combustion characteristics, and in particular relates to an experimental device and a method for measuring the laminar combustion velocity of liquid fuel with a voltage stabilizing function. Background technique [0002] Laminar combustion is an important sub-process of turbulent combustion process, and the study of fuel laminar combustion characteristics is an important means to master its combustion performance. Laminar combustion research has the advantages of relatively simple and stable flame structure in the test and testing process, and convenient parameter control. It can be used to reflect various combustion characteristic parameters such as fuel laminar combustion velocity, ignition energy, concentration ignition limit, and fuel ignition delay period. Among them, laminar combustion velocity can be used for the verification of fuel combustion mechanism and numerical simulation of turbulent...
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IPC IPC(8): G01N31/12
CPCG01N31/12
Inventor 许沧粟钟安昊胡洋洋周旋周康泉
Owner ZHEJIANG UNIV