CN115639246A - Experimental device and method for simulating non-uniform rocket kerosene steam cloud explosion in oxygen-enriched atmosphere - Google Patents
Experimental device and method for simulating non-uniform rocket kerosene steam cloud explosion in oxygen-enriched atmosphere Download PDFInfo
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- CN115639246A CN115639246A CN202211102432.4A CN202211102432A CN115639246A CN 115639246 A CN115639246 A CN 115639246A CN 202211102432 A CN202211102432 A CN 202211102432A CN 115639246 A CN115639246 A CN 115639246A
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Abstract
The invention discloses a device and a method for simulating heterogeneous rocket kerosene vapor cloud explosion experiment in oxygen-enriched atmosphere, which comprises a simulated oxygen-enriched atmosphere tank, a gas supply system, a heating temperature control system, a multi-path electric ignition system, a data testing and collecting system and an exhaust system; the gas supply system is sequentially connected with an external oxygen gas cylinder, a gas flowmeter and a one-way valve to the oxygen-enriched atmosphere tank; a silicon rubber electric heating plate in the heating temperature control system is fixed on the inner wall of the oxygen-enriched atmosphere tank, and an oil pool heater is fixed at the bottom of the oxygen-enriched atmosphere tank; the multi-path electric ignition system comprises an adjustable igniter and an ignition electrode; the carbon-hydrogen sensor and the first oxygen sensor in the data test acquisition system extend to the outer multichannel data acquisition module, the transmission module and the computer; and the exhaust system is respectively connected with the second oxygen sensor and the vacuum pump. The invention simulates the non-uniform concentration field distribution formed by the heating, evaporation and diffusion of the rocket kerosene in the oxygen-enriched atmosphere under the actual environmental condition and tests the steam cloud explosion characteristics, and has good reliability and strong practicability.
Description
Technical Field
The invention relates to the technical field of combustible liquid explosion test devices, in particular to an experimental device and method for simulating non-uniform rocket kerosene vapor cloud explosion in an oxygen-rich atmosphere.
Background
In various accident risks in an aerospace launching site, fire explosion caused by propellant leakage is the most serious catastrophic accident, so that the further control of the ignition explosion risk of the leaked propellant on the basis of actively preventing the propellant leakage is a crucial technical link for influencing the launching safety of a high-thrust rocket. Rocket kerosene is a fuel which is easy to leak, high in combustion heat value and high in danger, leaks easily in the processes of transportation, storage and use, and can form a combustible steam cloud of a non-uniform concentration field in a certain space, and once the combustible steam cloud meets an ignition source in air or a high-concentration oxygen atmosphere (hereinafter referred to as oxygen-enriched atmosphere), the combustible steam cloud is easy to cause a combustion and explosion accident, so that the research on the explosion characteristics of the rocket kerosene steam cloud in the oxygen-enriched atmosphere has important significance for preventing the rocket kerosene steam cloud explosion accident.
At present, a combustible fuel explosion characteristic test system is rarely researched at home and abroad, while the explosion and explosion suppression characteristics of combustible gas or dust are more researched, and a test experiment at normal temperature and normal pressure is generally carried out in a long and narrow pipeline or a cylindrical and spherical experimental device with a certain volume (less than 100L), so that the difference from the actual environment is large, the obtained experimental result has no obvious significance for guiding the explosion research in a large space, and the actual combustible steam cloud explosion process in a non-uniform concentration field cannot be truly simulated. Therefore, in order to research the explosion characteristics of combustible fuel steam, in particular to test the steam cloud explosion characteristics of a non-uniform concentration field formed by heating, evaporating and diffusing rocket kerosene in an oxygen-rich atmosphere, the invention needs to invent an experimental device capable of simulating non-uniform rocket kerosene steam cloud explosion in the oxygen-rich atmosphere.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provides an experimental device and method for simulating heterogeneous rocket kerosene vapor cloud explosion in an oxygen-enriched atmosphere.
The invention solves the technical problems through the following technical means: an experimental device for simulating heterogeneous rocket kerosene vapor cloud explosion in an oxygen-enriched atmosphere comprises a simulated oxygen-enriched atmosphere tank, a heating temperature control system, a gas supply system, a multi-path electric ignition system, a data testing and collecting system and an exhaust system. The simulated oxygen-enriched atmosphere tank is a 100L cylindrical pressure-resistant tank and can bear the gas pressure of 1 MPa; the side wall of the oxygen-enriched atmosphere simulation tank is provided with two observation windows and six through holes; the through hole is respectively communicated with the pressure release valve, the pipeline of the gas supply system, the circuit of the heating and temperature control system, the exhaust pipeline, the circuit of the data acquisition system and the pressure transmitter.
In particular to an experimental device for simulating heterogeneous rocket kerosene vapor cloud explosion in oxygen-enriched atmosphere, which comprises a simulated oxygen-enriched atmosphere tank (1), a gas supply system, a heating temperature control system, a multi-path electric ignition system, a data testing and collecting system and an exhaust system,
the simulated oxygen-enriched atmosphere tank (1) is of a sealed cylindrical structure, and the side wall of the tank comprises an observation window (16);
the gas supply system comprises a one-way valve (21), a gas flowmeter (22) and an external oxygen gas cylinder (23), wherein the external oxygen gas cylinder (23) is sequentially connected with the one-way valve (21), the gas flowmeter (22) and the simulated oxygen-enriched atmosphere tank (1);
the heating temperature control system comprises a silicon rubber electric heating plate (31), a constant temperature controller (32), a fixed support (33) and an oil pool heater (34); the silicon rubber electric heating plate (31) is fixed on the inner wall of the simulated oxygen-enriched atmosphere tank (1); the constant temperature controller (32) is connected with the oil pool heater (34); the oil pool heater (34) is fixed at the center of the bottom of the simulated oxygen-enriched atmosphere tank (1) through a fixing bracket (33);
the multi-path electric ignition system comprises an adjustable igniter (41) and an ignition electrode (42), wherein the adjustable igniter (41) is connected with the ignition electrode (42);
the data testing and collecting system comprises a hydrocarbon sensor (51), a first oxygen sensor (52), a multi-channel data collecting module (53), a transmission module (54) and a pressure transmitter (7); the ignition electrode (42) is connected with a multi-channel data acquisition module (53); the hydrocarbon sensor (51) and the first oxygen sensor (52) are arranged inside the simulated oxygen-enriched atmosphere tank (1); the pressure transmitter (7) is fixed on the side wall of the simulated oxygen-enriched atmosphere tank (1); the hydrocarbon sensor (51) and the first oxygen sensor (52) are respectively connected with a multi-channel data acquisition module (53); the multichannel data acquisition module (53) is connected with the transmission module (54);
the exhaust system comprises a three-way valve (61), a second oxygen sensor (62) and a vacuum pump (63); the vacuum pump (63) is connected with the three-way valve (61), the second oxygen sensor (62) and the simulated oxygen-enriched atmosphere tank (1) in sequence.
Preferably, the observation window in the simulated oxygen-enriched atmosphere tank is a transparent refractory glass panel, so that the explosion experiment phenomenon can be conveniently acquired by using appropriate camera equipment.
Preferably, the simulated oxygen-enriched atmosphere tank is made of 304 type stainless steel.
The gas supply system comprises a gas inlet pipeline, a one-way valve, a gas flowmeter and an external oxygen gas cylinder, the external oxygen gas cylinder is communicated with the interior of the tank through a through hole I sequentially through the gas flowmeter, the one-way valve and the gas inlet pipeline, and the oxygen atmosphere with different concentrations in the tank is effectively adjusted through a gas inlet purging mode.
The multi-path electric ignition system comprises an ignition electrode, an adjustable igniter and a connecting circuit, wherein the multi-path ignition electrode is arranged in the simulated oxygen-enriched atmosphere tank through the gantry type linear module and the adjustable positioning bracket and is positioned at different heights right above the center of the oil pool heater.
Preferably, the ignition electrode consists of a discharge probe and an insulating sleeve, and the discharge probe is fixed in the insulating sleeve.
The data testing and collecting system comprises a first oxygen sensor, a hydrocarbon sensor, a temperature feedback thermocouple, a multi-channel data collecting module, a transmission module and a computer. The first oxygen sensor and the first hydrocarbon sensor are connected with the multichannel data acquisition module, the transmission module and the computer through the through hole II, and the first oxygen sensor and the first hydrocarbon sensor are fixed at different heights above the oil pool heater through the positioning bracket, so that the concentrations of oxygen and kerosene vapor clouds far away from the liquid level of the liquid rocket and at different heights can be effectively monitored; the temperature feedback thermocouples are also fixed at different heights above the oil pool heater, so that the air temperature and the temperature change after combustion and explosion can be effectively recorded.
The heating temperature control system comprises an oil pool heater, a silicon rubber electric heating plate, a constant temperature controller and a temperature feedback thermocouple, wherein the oil pool heater is positioned at the center of the bottom of the simulated oxygen-enriched atmosphere tank through a fixed support so as to heat and evaporate rocket kerosene; the silicon rubber electric heating plate is fixed on the inner wall of the tank; the temperature feedback thermocouple is fixed on the center of the bottom of the oil pool heater and the electric hot plate, and can accurately control the air temperature in the tank to be consistent with the oil pool temperature; the constant temperature controller positioned outside the tank is respectively connected with the oil pool heater and the silicone rubber electric heating plate through a through hole III in the bottom of the tank, so that the temperature can be regulated to a specified range.
Preferably, the temperature feedback thermocouple in the heating temperature control system penetrates through the bottom of the tank body through the through hole III and extends to the outside to be connected with the temperature data acquisition system.
The exhaust system comprises an exhaust pipeline, a second oxygen sensor and a vacuum pump, the vacuum pump is communicated with the side wall through hole IV sequentially through the exhaust pipeline and the second oxygen sensor, air in the tank is rapidly and effectively extracted through the vacuum pump, and the oxygen concentration in the tank is tested through the second oxygen sensor.
The pressure transmitter is connected with the tank body through the through hole V, so that the change process of pressure signals before and after explosion can be accurately recorded, and data can be acquired through a computer;
preferably, the pressure transmitter adopts an explosion-proof pressure transmission controller, and dynamic pressure change can be accurately achieved within millisecond.
The invention also provides an experiment method for simulating heterogeneous rocket kerosene steam cloud blasting in oxygen-enriched atmosphere by adopting any scheme, which comprises the following steps: checking the air tightness, closing a check valve switch of an air supply system, opening a vacuum pump of an exhaust system, monitoring the value change of a pressure transmitter to negative pressure, closing the vacuum pump, opening the air supply system and an external oxygen gas cylinder, introducing oxygen with preset concentration into a simulated oxygen-enriched atmosphere tank through air intake purging, ensuring the oxygen atmosphere in the tank through a second oxygen sensor in an exhaust pipeline, closing the external oxygen gas cylinder after the oxygen concentration and the pressure reach preset values, controlling an oil pool heater and a silicon rubber electric heating plate through a constant temperature controller, monitoring the temperature feedback thermocouple to reach the preset values, detecting the value change of a non-uniform concentration field through a first oxygen sensor and a hydrocarbon sensor, determining an ignition position through a gantry type linear module after the equivalence ratio of the oxygen and the rocket kerosene is determined, adjusting the ignition energy of an ignition electrode by using an adjustable igniter to perform ignition experiments, opening the external oxygen gas cylinder for rescanning after the experiments, and repeating the steps until the experiments are finished.
Compared with the prior art, the invention has the beneficial effects that: the temperature can be accurately controlled by the heating temperature control system, so that the difficulty in experiment and measurement caused by the fact that a plurality of influence factors need to be considered in the explosion experiment under the condition of normal temperature and normal pressure in the prior art is effectively solved; pressure changes of the rocket kerosene steam cloud during burning and explosion are effectively observed through the pressure transmitter; a pressure release valve is arranged in the simulated oxygen-enriched atmosphere tank, and the device is effectively protected when the pressure exceeds 1Mpa, and meanwhile, the life health of experimenters is ensured; the concentration distribution of oxygen and kerosene steam clouds in the non-uniform concentration field can be monitored on line through the first oxygen sensor and the hydrocarbon sensor, and a combustion equivalence ratio basis is provided for an ignition position; meanwhile, the invention also effectively solves the technical problems of simulating oxygen-rich atmosphere, heating mode, electric ignition mode, air intake and exhaust mode and the like in the existing experimental device, effectively improves the practicability and accuracy of the device and provides experimental basis for testing the flammable liquid vapor cloud explosion experiment with a non-uniform concentration field.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an experimental apparatus and method for simulating heterogeneous rocket kerosene vapor cloud explosion in an oxygen-rich atmosphere according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an ignition system control platform and a measurement structure according to a first embodiment of the invention.
In the figure: 1-simulating an oxygen-enriched atmosphere tank; 11-through hole I; 12-via II; 13-via III; 14 through holes IV; 15-through hole V; 16-a viewing window; 21-a one-way valve; 22-a gas flow meter; 23-an external oxygen cylinder; 31-silicon rubber electric heating plate; 32-a constant temperature controller; 33-a fixed support; 34-oil sump heater; 41-adjustable igniters; 42-an ignition electrode; 51-a hydrocarbon sensor; 52-a first oxygen sensor; 53-multichannel data acquisition module; 54-a transmission module; 55-a computer; 61-three-way valve; 62-a second oxygen sensor; 63-a vacuum pump; 7-a pressure transmitter; 8, a pressure release valve; 9-gantry type linear module; 91-gantry type linear module support; 92-gantry type linear module stepping motor; 93-connecting the orifice plate; 94-a screw rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
Referring to fig. 1, the embodiment discloses an experimental apparatus for simulating heterogeneous rocket kerosene vapor cloud explosion in oxygen-rich atmosphere, which comprises a simulated oxygen-rich atmosphere tank 1, a gas supply system, a heating temperature control system, a multi-path electric ignition system, a data testing and collecting system and an exhaust system.
Referring to fig. 1, the simulated oxygen-enriched atmosphere tank 1 is a sealed cylindrical structure, and a through hole i 11, a through hole ii 12, a through hole iii 13, a through hole iv 14, a through hole v 15 and two observation windows 16 are arranged on the side wall of the simulated oxygen-enriched atmosphere tank 1. The observation window 16 in the simulated oxygen-enriched atmosphere tank is a transparent fire-resistant glass panel, so that the explosion experiment phenomenon can be conveniently obtained by using appropriate camera equipment. The simulated oxygen-enriched atmosphere tank is made of 304 type stainless steel.
Referring to fig. 1, the gas supply system comprises a one-way valve 21, a gas flow meter 22 and an external oxygen cylinder 23, and effectively simulates oxygen atmospheres with different concentrations by means of gas intake purging. The external oxygen cylinder 23 is connected with the gas flowmeter 22, the one-way valve 21 and the through hole I11 in sequence.
Referring to fig. 1, the heating temperature control system comprises a silicon rubber electric hot plate 31, a constant temperature controller 32, a fixed support 33 and an oil pool heater 34, and the temperature of air inside the simulated oxygen-enriched atmosphere tank 1 can be accurately controlled to be consistent with the temperature of the oil pool through a temperature feedback thermocouple, so that the experimental problems of the heat preservation mode and the heating mode of the existing practical device are effectively solved. The silicon rubber electric heating plate 31 is fixed on the inner wall of the simulated oxygen-enriched atmosphere tank 1, the oil pool heater 34 is fixed at the center of the bottom of the simulated oxygen-enriched atmosphere tank 1 through the fixing support 33, and the temperature is accurately controlled by the constant temperature controller 32. A plurality of temperature feedback thermocouples are respectively fixed at the center of the bottom of the oil pool heater 34 and on the silicon rubber electric heating plate 31, so that the temperature of air in the tank can be accurately controlled to be consistent with the temperature of the oil pool. The constant temperature controller 32 positioned outside the tank is respectively connected with the oil pool heater 34 and the silicon rubber electric heating plate 31 through a through hole III 13 at the bottom of the tank, so that the temperature can be regulated to a specified range.
Referring to fig. 1 and 2, the multi-path electric ignition system includes an adjustable igniter 41 and an ignition electrode 42; the ignition position under the non-uniform concentration field is determined by the equivalent ratio of the oxygen/rocket kerosene steam concentration detected by the hydrocarbon sensor 51 and the first oxygen sensor 52, and meanwhile, the adjustable igniter 41 can adjust the electric ignition energy from a millifocus level to a focus level, so that the electric ignition conditions with different energies are realized. The ignition electrode 42 is arranged in the simulated oxygen-enriched atmosphere tank 1, and the ignition electrode 42 is respectively connected with the adjustable igniter 41 and the multi-channel data acquisition module 53 through the through hole II 12. The multi-channel data acquisition module 53 is connected to the transmission module 54 and the computer 55 in sequence. The multiple ignition electrodes 42 are fixed on a gantry type linear module bracket 91 and are positioned at different heights right above the center of the oil pool heater 34. The ignition electrode consists of a discharge probe and an insulating sleeve, and the discharge probe is fixed in the insulating sleeve.
Referring to fig. 1 and 2, the data testing and collecting system comprises a hydrocarbon sensor 51, a first oxygen sensor 52, a temperature feedback thermocouple, a multi-channel data collecting module 53, a transmission module 54, a computer 55 and a pressure transmitter 7, wherein the non-uniform concentration of oxygen/rocket kerosene steam at different positions can be measured through the hydrocarbon sensor 51 and the first oxygen sensor 52, a concentration equivalence ratio data support is provided for electric ignition, and the pressure transmitter 7 can accurately record the change process of millisecond-level pressure signals before and after explosion. The temperature feedback thermocouple is arranged inside the simulated oxygen-enriched atmosphere tank 1 and is connected with the multichannel data acquisition module 53. The hydrocarbon sensor 51 and the first oxygen sensor 52 are disposed inside the simulated oxygen-rich atmosphere tank 1. The carbon hydrogen sensor 51 and the first oxygen sensor 52 in the data testing and collecting system are also fixed on a gantry type linear module bracket 91. The first oxygen sensor 52 and the first hydrocarbon sensor 51 are sequentially connected with a multi-channel data acquisition module 53, a transmission module 54 and a computer 55 through a through hole II 12. The pressure transmitter 7 is connected with a multi-channel data acquisition module 53. The pressure transmitter 7 is fixed on the side wall of the simulated oxygen-enriched atmosphere tank 1 through a through hole V15. The first oxygen sensor 52 and the hydrocarbon sensor 51 are fixed at different heights above the oil pool heater 34 through the positioning bracket, so that the concentration of oxygen and kerosene vapor clouds at different heights far away from the liquid level of the liquid rocket kerosene can be effectively monitored. And a plurality of temperature feedback thermocouples are also fixed at different heights above the oil pool heater 34, so that the air temperature and the temperature change after explosion can be effectively recorded.
Referring to fig. 1, the exhaust system includes a three-way valve 61, a second oxygen sensor 62, and a vacuum pump 63, and the oxygen atmosphere of the simulated oxygen-rich atmosphere tank 1 is determined by the second oxygen sensor 62. The vacuum pump 63 is connected to the three-way valve 61 and the second oxygen sensor 62 in sequence. The second oxygen sensor 62 extends into the simulated oxygen-enriched atmosphere tank 1 through the through hole IV 14.
In this embodiment, 1 top fixed mounting of simulation oxygen-enriched atmosphere jar has relief valve 8, takes off when pressure surpasses 1Mpa, the effectual device of having protected guarantees simultaneously that the experimenter's is healthy.
In this embodiment, the gantry type linear module 9 is installed inside the simulated oxygen-enriched atmosphere tank 1 and comprises a gantry type linear module bracket 91, a gantry type linear module stepping motor 92 and a connection hole plate 93. The gantry type linear module support 91 comprises a screw 94 and a positioning support. The ignition system can be positioned to different heights under the nonuniform concentration field through the gantry type linear module 9. The positioning bracket is fixed on the screw rod 94 through a connecting orifice plate 93. A hydrocarbon sensor 51 and a first oxygen sensor 52 are provided on each positioning bracket. One end of each positioning bracket is provided with an ignition electrode 42. The gantry type linear module stepper motor 92 is mounted on a lead screw 94. The gantry type linear module stepping motor 92 is used for driving the gantry type linear module bracket 91 to move.
The method of experiment using the above combustion apparatus was as follows: checking the air tightness, closing a one-way valve 21 switch of an air supply system, starting a vacuum pump 63 of an exhaust system, monitoring the numerical value change of a pressure transmitter 7 to-0.1 MPa, closing the vacuum pump 63, starting the air supply system and an external oxygen gas cylinder 23, introducing oxygen with certain concentration into the simulated oxygen-enriched atmosphere tank 1 through air intake purging, ensuring the oxygen atmosphere inside the simulated oxygen-enriched atmosphere tank 1 through a second oxygen sensor 62 in an exhaust pipeline, closing the external oxygen gas cylinder 23 after the oxygen concentration and the pressure reach preset values, controlling an oil pool heater 34 and a silicon rubber electric heating plate 31 through a constant temperature controller 32, monitoring the temperature feedback thermocouple to reach the preset values, detecting the numerical value change of a non-uniform concentration field through a hydrocarbon sensor 51 and a first oxygen sensor 52, determining the ignition position through a gantry type linear module 9 after the equivalence ratio of the oxygen and the rocket kerosene is determined, adjusting the ignition energy of an ignition electrode 42 by using an adjustable igniter 41 to perform ignition experiments, opening the external oxygen gas cylinder to perform rescanning after the experiments, and repeating the steps until the experiments are finished.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. An experimental device for simulating non-uniform rocket kerosene steam cloud blasting in oxygen-enriched atmosphere is characterized by comprising a simulated oxygen-enriched atmosphere tank (1), a gas supply system, a heating temperature control system, a multi-path electric ignition system, a data testing and collecting system and an exhaust system,
the simulated oxygen-enriched atmosphere tank (1) is of a sealed cylindrical structure, and the side wall of the tank comprises an observation window (16);
the gas supply system comprises a one-way valve (21), a gas flowmeter (22) and an external oxygen gas cylinder (23), wherein the external oxygen gas cylinder (23) is sequentially connected with the one-way valve (21), the gas flowmeter (22) and the simulated oxygen-enriched atmosphere tank (1);
the heating temperature control system comprises a silicon rubber electric heating plate (31), a constant temperature controller (32), a fixed support (33) and an oil pool heater (34); the silicon rubber electric heating plate (31) is fixed on the inner wall of the simulated oxygen-enriched atmosphere tank (1); the constant temperature controller (32) is connected with the oil pool heater (34); the oil pool heater (34) is fixed at the center of the bottom of the simulated oxygen-enriched atmosphere tank (1) through a fixing bracket (33);
the multi-path electric ignition system comprises an adjustable igniter (41) and an ignition electrode (42), wherein the adjustable igniter (41) is connected with the ignition electrode (42);
the data testing and collecting system comprises a hydrocarbon sensor (51), a first oxygen sensor (52), a multi-channel data collecting module (53), a transmission module (54) and a pressure transmitter (7); the ignition electrode (42) is connected with a multi-channel data acquisition module (53); the hydrocarbon sensor (51) and the first oxygen sensor (52) are arranged inside the simulated oxygen-enriched atmosphere tank (1); the pressure transmitter (7) is fixed on the side wall of the simulated oxygen-enriched atmosphere tank (1); the hydrocarbon sensor (51) and the first oxygen sensor (52) are respectively connected with a multi-channel data acquisition module (53); the multi-channel data acquisition module (53) is connected with the transmission module (54);
the exhaust system comprises a three-way valve (61), a second oxygen sensor (62) and a vacuum pump (63); the vacuum pump (63) is connected with the three-way valve (61), the second oxygen sensor (62) and the simulated oxygen-enriched atmosphere tank (1) in sequence.
2. The experimental device for simulating the cloud combustion and explosion of the non-uniform rocket kerosene steam in the oxygen-enriched atmosphere according to claim 1, characterized in that the constant temperature controller (32) is arranged outside the simulated oxygen-enriched atmosphere tank (1), and the fixed bracket (33) and the oil pool heater (34) are arranged inside the simulated oxygen-enriched atmosphere tank (1).
3. The experimental device for simulating the cloud combustion and explosion of the inhomogeneous rocket kerosene steam in the oxygen-enriched atmosphere according to claim 1, characterized in that the ignition electrode (42) is arranged inside the simulated oxygen-enriched atmosphere tank (1), and the adjustable igniter (41) is arranged outside the simulated oxygen-enriched atmosphere tank (1).
4. The experimental apparatus for simulating heterogeneous rocket kerosene steam cloud explosion in oxygen-enriched atmosphere according to claim 1, characterized in that the multi-channel data acquisition module (53) and the transmission module (54) are arranged outside the simulated oxygen-enriched atmosphere tank (1).
5. The experimental device for simulating the cloud combustion and explosion of the inhomogeneous rocket kerosene steam in the oxygen-rich atmosphere according to claim 1, wherein a gantry type linear module (9) is installed inside the simulated oxygen-rich atmosphere tank (1), and the ignition electrode (42), the hydrocarbon sensor (51) and the first oxygen sensor (52) are all fixed on the gantry type linear module (9).
6. The experimental device for simulating non-uniform rocket kerosene steam cloud blasting in oxygen-rich atmosphere according to claim 1, characterized in that the simulated oxygen-rich atmosphere tank (1) is fixedly provided with a pressure release valve (8).
7. The experimental device for simulating inhomogeneous rocket kerosene steam cloud explosion in oxygen-rich atmosphere according to claim 5, wherein said gantry type linear module (9) comprises gantry type linear module bracket (91), gantry type linear module stepping motor (92) and connecting orifice plate (93); the gantry type linear module bracket (91) comprises a screw rod (94) and a positioning bracket; the positioning bracket is fixed on the screw rod (94) through a connecting pore plate (93); a hydrocarbon sensor (51) and a first oxygen sensor (52) are arranged on each positioning bracket; one end of each positioning bracket is provided with an ignition electrode (42); the gantry linear module stepping motor (92) is arranged on the screw rod (94).
8. The experimental apparatus for simulating heterogeneous rocket kerosene steam cloud explosion in oxygen-enriched atmosphere according to claim 1, wherein a plurality of temperature feedback thermocouples are respectively fixed at different heights above the oil pool heater (34), at the center of the bottom of the oil pool heater and on the silicon rubber electric heating plate (31).
9. An experimental method for simulating heterogeneous rocket kerosene steam cloud explosion in an oxygen-enriched atmosphere, which is characterized in that the experimental device of any one of claims 1-8 is adopted, and the method comprises the following steps: checking air tightness, closing a one-way valve (21) switch of an air supply system, starting a vacuum pump (63) of an exhaust system, monitoring the value of a pressure transmitter (7) to a preset value, closing the vacuum pump (63), starting the air supply system and an external oxygen gas cylinder (23), introducing oxygen with preset concentration into a simulated oxygen-enriched atmosphere tank (1) through air intake purging, ensuring the oxygen atmosphere concentration inside the simulated oxygen-enriched atmosphere tank (1) through a second oxygen sensor (62) in an exhaust pipeline, closing the external oxygen gas cylinder (23) after the oxygen concentration and the pressure reach the preset value, controlling an oil pool heater (34) and a silicon rubber electric heating plate (31) through a constant temperature controller (32), monitoring a temperature feedback thermocouple to reach the preset value, detecting the value change of a non-uniform concentration field through a hydrocarbon sensor (51) and a first oxygen sensor (52), determining an ignition position through a gantry type linear module (9) after the equivalence ratio of oxygen and kerosene is determined, adjusting the ignition energy of an ignition electrode (42) by using an adjustable igniter (41) to perform an ignition experiment, opening the external oxygen gas cylinder after the experiment is finished, and repeating the experiment until the step.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117030531A (en) * | 2023-08-14 | 2023-11-10 | 中国矿业大学 | Underground lining type cave hydrogen storage warehouse bedding gas concentration monitoring system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117030531A (en) * | 2023-08-14 | 2023-11-10 | 中国矿业大学 | Underground lining type cave hydrogen storage warehouse bedding gas concentration monitoring system |
| CN117030531B (en) * | 2023-08-14 | 2024-04-16 | 中国矿业大学 | Underground lining type cave hydrogen storage warehouse bedding gas concentration monitoring system |
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