CN101738415B - Multi-functional combustion experimental system - Google Patents

Multi-functional combustion experimental system Download PDF

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CN101738415B
CN101738415B CN200910243954A CN200910243954A CN101738415B CN 101738415 B CN101738415 B CN 101738415B CN 200910243954 A CN200910243954 A CN 200910243954A CN 200910243954 A CN200910243954 A CN 200910243954A CN 101738415 B CN101738415 B CN 101738415B
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experimental considerations
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CN101738415A (en
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于强
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National Space Science Center of CAS
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Abstract

The invention provides a multi-functional combustion experimental system, comprising an upper computer, a control system, an air supply unit, an air outlet valve, a safety valve, a sample experiment unit, an exhaust gas collector, an air concentration measuring unit and the like. A combustible matter is placed in the sample experiment unit, then a plurality of gases are flown to the sample experiment unit according to preset ratio through the air supply unit; then the temperature of the sample experiment unit is controlled or an automatic ignition device is controlled to enable the combustible matter to burn; a temperature sensor arranged at the sample experiment unit is employed to measure the combustion state of the combustible matter and space and temperature distribution; When combustion is finished, the combustion products are discharged into the air concentration measuring unit through the air outlet valve; and a plurality of air concentration sensors arranged in the air concentration measuring unit are employed to measure components and concentrations of gases in the combustion products. The multi-functional combustion experimental system of the invention features multiple functions and good universality, can finish multiple experimental working conditions in a single experiment and greatly improve experimental efficiency.

Description

Multi-functional combustion experimental system
Technical field
The present invention relates to the combustion science experiment, particularly a kind of multi-functional combustion experimental system that is applicable under ground environment and the microgravity condition.
Background technology
Present microgravity combustion experimental provision function is comparatively single, is merely able to carry out a kind of test.For example material catch fire and combustion characteristics research, forced convection and gas composition are studied with fire monitoring Study on Technology, coal dust firing and pollutant formation characteristic thereof burning-moving phase interaction mechanism research, the smoke movement rule of the influence research of flame characteristics, the mechanism of smouldering research, premixed flame.The research method of these tests is to use a kind of experimental provision of simple function, makes an experiment then.If carry out other a kind of test, must change test unit, reconfigure process of the test.The shortcoming of doing like this is that the equipment recycling rate of waterused is low, and test efficiency is low, and cost is too high, and reconstruct property is poor.
For example, Fig. 1 is the isocyanurate foam used on No. 8 SDI of the current experiments experimental provision of smouldering.It is used under the isobaric condition of microgravity condition research smouldering of isocyanurate foam and lights and the two-way propagation process.As shown in Figure 1, the isocyanurate foam experimental provision of smouldering is made up of sample experimental considerations unit, gas control module and measuring unit.It has two air feed gas circuits, and each bar air feed gas circuit is come the flow velocity of pilot-gas by a solenoid valve and a throttling valve, and the flow velocity of gas is respectively 1.0mm/s and 3.1mm/s in two air supply channels.Its gas discharge outlet place is equipped with a safety valve, and after the air pressure in the sample experimental considerations unit acquired a certain degree, safety valve can be opened pressure release automatically, in order to avoid excessive the blasting of sample experimental considerations unit internal pressure.In the sample experimental considerations unit pressure transducer is housed.The upper and lower surface of sample is separately installed with 6 thermopairs vertically successively, has 12 thermopairs.Thermopair is used to measure sample Temperature Distribution on every side.Its experimentation is following: after experimental provision powers up, begin to gather and write down the data of thermopair and pressure transducer; Open the solenoid valve on the low speed flow branch road then, air feed in the sample experimental considerations unit.Sample is heated.When temperature reaches 340 when spending, stop heating, close solenoid valve.Open the solenoid valve on the high velocity air branch road simultaneously, after 90 minutes, close solenoid valve.
The function of this experimental provision is very single, is merely able to carry out the test of smouldering with good conditionsi.Because what it used is the flow that solenoid valve and throttling valve come pilot-gas.It is merely able to provide the air-flow of two kinds of fixed flow rate, and the speed of air-flow can not be adjusted.It is merely able to provide a kind of gas to make an experiment, if carry out the experiment of two kinds of gas componants, and must two cover experimental provisions.It does not have observation unit, can not the viewing test process.
In addition, Fig. 2 is the lead that uses on No. 8 SDI of current experiments characteristic test in the early stage research device that catches fire.It is used for temperature and the radiation characteristic that insulation course catches fire early stage under research lead self moderate overload under microgravity, thereby obtains the sign of catching fire in advance of microgravity condition lower wire insulation course under self transships.As shown in Figure 2, the lead characteristic test research device in early stage that catches fire partly is made up of sample, temperature measurement unit, radiometer, pressure transducer, control system, power supply etc.During test, pass to the electric current of about 10A in the sample lead, this moment, the sample lead began to heat up.Thermopair is noted the temperature-rise period of lead, and radiometer is noted the radiation of lead.Temperature and radiation data be by the control system collection, and through the RS422 mouth data that collect are spread out of.Pressure transducer is used for the pressure of measurement environment.Power supply is used for supplying power to the sample lead.Because this test unit does not have air supply system, so its test is under constant pressure, to carry out.It can not carry out the characteristic test research in early stage of catching fire of lead under different pressures, the gas with various composition like this.
Summary of the invention
The purpose of this invention is to provide a kind of multi-functional combustion experimental system, utilize this system can carry out the combustion science experiment under the multiple microgravity, also can be used for carrying out in the ground environment simultaneously the combustion science test.
For realizing above-mentioned purpose; The invention provides a kind of multi-functional combustion experimental system; Be used for the combustion science experiment under ground environment and the microgravity condition; It is characterized in that this system comprises: host computer, control system, air supply unit, the valve of giving vent to anger, safety valve, sample experimental considerations unit and exhaust gas collector.
Wherein, said host computer is used for sending control command to said control system, and gathers said control system and transmit the experimental data and the image of returning.
Said control system is used to control the experimentation of total system, comprising: temperature and the data acquisition in the combustion process, data storage and transmission in the switch of each valve, the flow of gas, the said sample experimental considerations unit.
Said air supply unit; Comprise: a plurality of gas cylinders, with corresponding each gas channels of said a plurality of gas cylinders in the flow controlling unit and the air intake valve that are provided with; Said flow controlling unit is made up of flowmeter and flowmeter control system, is used for controlling the gas flow of supplying with said sample experimental considerations unit, under the control of said control system; This flow controlling unit cooperates with said air intake valve, and one or more gases that leave in each gas cylinder are sent in the said sample experimental considerations unit.
Said sample experimental considerations unit is a cylindrical or square cavity, and inside cavity is equipped with heating arrangement, automatic ignition device and temperature sensor, and there is heat-insulation layer the outside; The air inlet of this sample experimental considerations unit is given vent to anger then by said air outlet valve gate control, in addition by the air intake valve control of said air supply unit; This sample experimental considerations unit also is connected with safety valve, and when the hypertonia in the cavity, safety valve is opened automatically; Pressure releasing in the sample experimental considerations unit is fallen, to guarantee the safety of total system.
In advance combustible is inserted in the cavity in the said sample experimental considerations unit, then, when said air intake valve is opened gas circuit; Gas in each gas cylinder of said air supply unit according to the ratio that pre-sets, flows in the said sample experimental considerations unit under the control of said flow controlling unit; Close air intake valve then and stop air inlet; Then, said control system is perhaps controlled the automatic ignition device that is arranged in said sample experimental considerations unit through the heating-up temperature of control sample experimental considerations unit, makes the combustible burning; Detect fired state and the spatial temperature distribution situation that obtains comburant to be measured this moment through said temperature sensor; After treating that burning is accomplished, with the said valve open of giving vent to anger, then products of combustion enters in the said exhaust gas collector through this valve of giving vent to anger.
In addition; In order further to detect the performance of comburant to be measured; Multi-functional combustion experimental system of the present invention; Can also comprise the gas concentration measurement unit, be installed in the downstream of the said valve of giving vent to anger in the exhaust line of said sample experimental considerations unit, pressure transducer and multiple gases concentration sensor are installed in this gas concentration measurement unit.
The experimentation of burning test of the present invention system with this gas concentration measurement unit is following: in advance combustible is inserted in the cavity in the said sample experimental considerations unit; Then; When said air intake valve was opened gas circuit, the gas in each gas cylinder of said air supply unit was under the control of said flow controlling unit, according to the ratio that pre-sets; Flow in the said sample experimental considerations unit; Close air intake valve then and stop air inlet, then, said control system is perhaps controlled the automatic ignition device that is arranged in said sample experimental considerations unit through the heating-up temperature of control sample experimental considerations unit; Make the combustible burning; After treating that burning is accomplished, with the said valve open of giving vent to anger, then products of combustion enters said gas concentration measurement unit through this valve of giving vent to anger; After after a while; Through be installed in the pressure transducer in the said sample experimental considerations unit cavity and be installed in pressure transducer in the said gas concentration measurement unit measure respectively in the said sample experimental considerations unit with said gas concentration measurement unit in pressure near balance after, through the multiple gases concentration sensor that is installed in the said gas concentration measurement unit gas concentration in the gas concentration measurement unit is measured, thereby is obtained the gas concentration in the sample experimental considerations unit; Record gas componant and concentration in the products of combustion thus, waste gas is discharged in the said exhaust gas collector that links to each other with said gas concentration measurement unit at last.
In addition; In the above-mentioned burning test system with gas concentration measurement unit; Under microgravity condition; Thereby, make the gas concentration in said sample experimental considerations unit and the said gas concentration measurement unit reach balance fast through making inside, unit become the mode of negative pressure with extraneous communicating said gas concentration measurement unit.
In addition, can also be provided with fan in the said sample experimental considerations unit, be used for stirring the gas of sample experimental considerations unit, all gases composition can be distributed in the whole sample experimental considerations unit quickly and evenly.
In addition, can also further be provided with the image viewing unit in the said sample experimental considerations unit, be used for observing and writing down the combustion process of sample experimental considerations unit.
In addition, the temperature sensor that is installed in the said sample experimental considerations unit is one group of array of temperature sensor.Temperature sensor can use occasionally optical fiber of thermoelectricity.It is used for measuring the Temperature Distribution in the sample experimental considerations unit.
The number of said gas cylinder can increase according to the requirement of test, reduce or change, to satisfy the requirement of burning test to gas componant.For example, the gas cylinder number can be 1~10, thereby can carry out the experiment of combustible burning performance in the multiple gases component environment.
In addition, multi-functional combustion pilot system of the present invention can also increase other unit, through increasing, reduce or changing individual elements, just can carry out different combustion experiments.For example, if increase a fire-extinguishing test unit, just can carry out the TEST TO DISTINGUISH SPONTANEOUS under the microgravity.
The beneficial effect of multi-functional combustion experimental system of the present invention is:
1) the experimental provision function is many.Can in same device, accomplish the ground environment of multiple material and the combustion experiment under the microgravity environment.Single test can be accomplished the experiment of multiple gases environment, and the multiple gases composition is proportioning arbitrarily.Gas flow rate is adjustable continuously, can form multiple flow velocity.These characteristics provides strong support for forced convection and gas composition in the research microgravity environment to the influence of flame characteristics.
2) experimental provision is simple in structure, and performance is safe and reliable.Can produce a controlled microgravity combustion experimental enviroment.Can in a cavity, accomplish the microgravity combustion experiment of heterogeneity, different proportioning, variable concentrations, different in flow rate.It is particularly suitable in the enterprising row space scientific experiment of the spacecraft of limited weight, limited bulk, limited power.And this system is placed on the gas concentration measurement unit outside the sample experimental considerations unit, can avoid temperature too high in the sample experimental considerations unit to damage gas concentration sensor thus.In addition, through in each gas channels, all being provided with a flow controlling unit of forming by the control system of flowmeter and flowmeter, can control the gas flow of supplying with in the sample experimental considerations unit exactly.
3) modular design.Owing to adopt modularized design method, but so various modules of flexible configuration.Only needing increases or reduces gas cylinder, just can increase or reduce the gaseous species that is used to test.The configuration different sensor just can be monitored different gas componants.If increase by two or three sample experimental considerations units, just can in the primary space scientific experiment, carry out the burning test of multiple material.
4) highly versatile.Because the sample experimental considerations unit can flexible configuration, therefore can carry out multiple space microgravity combustion experiment.For example, utilize it can under microgravity condition, carry out following research:
● catching fire and combustion characteristics research of material
● forced convection and gas composition are to the influence of flame characteristics
● the mechanism of smouldering research
● the burning of premixed flame-moving phase interaction mechanism research
● smoke movement rule and fire monitoring Study on Technology
● coal dust firing and the research of pollutant formation characteristic thereof
5) extensibility is strong.In this device, increase other unit, just can further carry out otherwise microgravity combustion scientific experiment.Increase, reduce or the change individual elements, just can carry out different microgravity combustion experiments.It has remedied the deficiency that the testing equipment in China's space combustion experiment in the past is merely able to carry out single experiment.For example, if add the fire-extinguishing test unit, just can carry out the TEST TO DISTINGUISH SPONTANEOUS under the microgravity.
6) can once accomplish a plurality of operating modes.Can in single test, accomplish a plurality of experiment conditions, improve test efficiency greatly.
Description of drawings
Fig. 1 is the smoulder structural principle synoptic diagram of experimental provision of the isocyanurate foam used on No. 8 SDI of current experiments.
Fig. 2 is the catch fire structural principle synoptic diagram of characteristic test in early stage research device of the lead that uses on No. 8 SDI of current experiments.
Fig. 3 is the structural principle synoptic diagram of multi-functional combustion experimental system of the present invention.
Fig. 4 is the structural principle synoptic diagram of another embodiment of multi-functional combustion experimental system of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment multi-functional combustion experimental system of the present invention is carried out detailed explanation.
Fig. 3 is the structural principle synoptic diagram of multi-functional combustion experimental system of the present invention.As shown in Figure 3; Multi-functional combustion experimental system of the present invention; Can be used for the combustion science experiment under ground environment and the microgravity condition, this system comprises: host computer, control system, air supply unit, the valve of giving vent to anger, safety valve, sample experimental considerations unit and exhaust gas collector.
Wherein, host computer is used for sending control command to control system, and acquisition control system transmits the experimental data and the image of returning.
Control system is used to control the experimentation of total system, comprising: the temperature in the switch of each valve, the flow of gas, the sample experimental considerations unit and the data acquisition in the combustion process, data storage and transmission.
Air supply unit comprises: a plurality of gas cylinders (gas cylinder 1, gas cylinder 2 and gas cylinder 3), with corresponding each gas channels of a plurality of gas cylinders in the flow controlling unit (flow controlling unit 1, flow controlling unit 2 and flow controlling unit 3) and the air intake valve that are provided with.Flow controlling unit is made up of flowmeter and flowmeter control system; Be used for controlling the gas flow of supplying with the sample experimental considerations unit; Under the control of control system; This flow controlling unit cooperates with air intake valve, and one or more gases that leave in each gas cylinder are sent in the sample experimental considerations unit simultaneously.Here, the number of gas cylinder can increase according to the requirement of test, reduce or change, to satisfy the requirement of burning test to gas componant.For example, the gas cylinder number can be 1~10, thereby can carry out the experiment of combustible burning performance in the multiple gases component environment.
The sample experimental considerations unit is a cylindrical or square cavity, and inside cavity is equipped with heating arrangement, automatic ignition device and temperature sensor, and there is heat-insulation layer the outside.The air inlet of this sample experimental considerations unit is by the air intake valve control of air supply unit; Give vent to anger then by the air outlet valve gate control, in addition, this sample experimental considerations unit also is connected with safety valve; When the hypertonia in the cavity; Safety valve is opened automatically, the pressure releasing in the sample experimental considerations unit is fallen, to guarantee the safety of total system.
Can also be provided with fan in the sample experimental considerations unit, be used for stirring the gas of sample experimental considerations unit, all gases composition can be distributed in the whole sample experimental considerations unit quickly and evenly.
Can also further be provided with the image viewing unit in the sample experimental considerations unit, be used for observing and writing down the combustion process of sample experimental considerations unit.
In addition, the temperature sensor that is installed in the sample experimental considerations unit is one group of array of temperature sensor.Temperature sensor can use occasionally optical fiber of thermoelectricity.It is used for measuring the Temperature Distribution in the sample experimental considerations unit.
In advance combustible is inserted in the cavity in the sample experimental considerations unit; Then; When air intake valve was opened gas circuit, the gas in each gas cylinder of air supply unit was under the control of flow controlling unit, according to the ratio that pre-sets; Flow in the sample experimental considerations unit, close air intake valve then and stop air inlet.Then, control system is perhaps controlled the automatic ignition device that is arranged in the sample experimental considerations unit through the heating-up temperature of control sample experimental considerations unit, makes the combustible burning, and can detect fired state and the Temperature Distribution that obtains comburant to be measured this moment through temperature sensor.After treating that burning is accomplished, the valve open of will giving vent to anger, then products of combustion enters in the exhaust gas collector through this valve of giving vent to anger.
Fig. 4 is the structural principle synoptic diagram of another embodiment of multi-functional combustion experimental system of the present invention.As shown in Figure 4; In order further to detect the performance of comburant to be measured; Multi-functional combustion experimental system of the present invention is on system architecture shown in Figure 3; Can further include the gas concentration measurement unit, the downstream that it is installed in the valve of giving vent to anger in the exhaust line of sample experimental considerations unit are equipped with pressure transducer and multiple gases concentration sensor in this gas concentration measurement unit.
The experimentation of burning test of the present invention system with this gas concentration measurement unit is following: in advance combustible is inserted in the cavity in the sample experimental considerations unit; Then; When air intake valve is opened gas circuit; Gas in each gas cylinder of air supply unit (gas cylinder 1, gas cylinder 2 and gas cylinder 3) is under (flow controlling unit 1, flow controlling unit 2 and flow controlling unit 3) control of flow controlling unit; According to the ratio that pre-sets, flow in the sample experimental considerations unit, close air intake valve then and stop air inlet.Then; Control system is perhaps controlled the automatic ignition device that is arranged in the sample experimental considerations unit through the heating-up temperature of control sample experimental considerations unit; Make the combustible burning, after the completion of waiting to burn, the valve open of will giving vent to anger; Then products of combustion enters the gas concentration measurement unit through this valve of giving vent to anger; After after a while, through be installed in the pressure transducer 1 in the sample experimental considerations unit cavity and be installed in pressure transducer 2 in the said gas concentration measurement unit measure respectively in the sample experimental considerations unit with the gas concentration measurement unit in pressure near balance after, through the multiple gases concentration sensor that is installed in the gas concentration measurement unit gas concentration in the gas concentration measurement unit is measured; Thereby obtain the gas concentration in the sample experimental considerations unit, record gas componant and concentration in the products of combustion thus.Waste gas is discharged in the exhaust gas collector that links to each other with the gas concentration measurement unit at last.
In addition; In the above-mentioned burning test system with gas concentration measurement unit; Under microgravity condition; Thereby can make the gas concentration in sample experimental considerations unit and the gas concentration measurement unit reach balance fast through making inside, unit become the mode of negative pressure with extraneous communicating the gas concentration measurement unit.
In addition, can also be provided with fan in the sample experimental considerations unit, be used for stirring the gas of sample experimental considerations unit, all gases composition can be distributed in the whole sample experimental considerations unit quickly and evenly.
In addition, can also further be provided with the image viewing unit in the sample experimental considerations unit, be used for observing and writing down the combustion process of sample experimental considerations unit.
In addition, the temperature sensor that is installed in the sample experimental considerations unit is one group of array of temperature sensor.Temperature sensor can use occasionally optical fiber of thermoelectricity.It is used for measuring the Temperature Distribution in the sample experimental considerations unit.
The number of the gas cylinder in the air supply unit can increase according to the requirement of test, reduce or change, to satisfy the requirement of burning test to gas componant.For example, the gas cylinder number can be 1~10, thereby can detect the burning performance of combustible in the multiple gases environment.
In addition, the quantity of sample experimental considerations unit also can increase as required, for example, if increase by two or three sample experimental considerations units, just can in the primary space scientific experiment, carry out the burning test of multiple material.
In addition, multi-functional combustion pilot system of the present invention can also increase other functional unit as required, through increasing, reduce or changing individual elements, just can carry out different combustion experiments.For example, if increase a fire-extinguishing test unit, just can carry out the TEST TO DISTINGUISH SPONTANEOUS under the microgravity.
Need to prove, embodiment of the present invention of more than introducing and and unrestricted.It will be understood by those of skill in the art that any modification to technical scheme of the present invention perhaps is equal to alternative spirit and the scope that does not break away from technical scheme of the present invention, it all should be encompassed in the claim scope of the present invention.

Claims (9)

1. multi-functional combustion experimental system; Be used for the combustion science experiment under ground environment and the microgravity condition, it is characterized in that this system comprises: host computer, control system, air supply unit, the valve of giving vent to anger, safety valve, sample experimental considerations unit and exhaust gas collector; Wherein
Said host computer is used for sending control command to said control system, and gathers said control system and transmit the experimental data and the image of returning;
Said control system is used to control the experimentation of total system, comprising: temperature and the data acquisition in the combustion process, data storage and transmission in the switch of each valve, the flow of gas, the said sample experimental considerations unit;
Said air supply unit; Comprise: a plurality of gas cylinders, with corresponding each gas channels of said a plurality of gas cylinders in the flow controlling unit and the air intake valve that are provided with; Said flow controlling unit is made up of flowmeter and flowmeter control system, is used for controlling the gas flow of supplying with said sample experimental considerations unit, under the control of said control system; This flow controlling unit cooperates with said air intake valve, and one or more gases that leave in each gas cylinder are sent in the said sample experimental considerations unit;
Said sample experimental considerations unit is a cylindrical or square cavity, and inside cavity is equipped with heating arrangement, automatic ignition device and temperature sensor, and there is heat-insulation layer the outside; The air inlet of this sample experimental considerations unit is given vent to anger then by said air outlet valve gate control, in addition by the air intake valve control of said air supply unit; This sample experimental considerations unit also is connected with safety valve, and when the hypertonia in the cavity, safety valve is opened automatically; Pressure releasing in the sample experimental considerations unit is fallen, to guarantee the safety of total system;
In advance combustible is inserted in the cavity in the said sample experimental considerations unit, then, when said air intake valve is opened gas circuit; Gas in each gas cylinder of said air supply unit according to the ratio that pre-sets, flows in the said sample experimental considerations unit under the control of said flow controlling unit; Close air intake valve then and stop air inlet; Then, said control system is perhaps controlled the automatic ignition device that is arranged in said sample experimental considerations unit through the heating-up temperature of control sample experimental considerations unit, makes the combustible burning; Detect fired state and the spatial temperature distribution situation that obtains comburant to be measured this moment through said temperature sensor; After treating that burning is accomplished, with the said valve open of giving vent to anger, then products of combustion enters in the said exhaust gas collector through this valve of giving vent to anger.
2. multi-functional combustion experimental system according to claim 1; It is characterized in that; This system also comprises the gas concentration measurement unit; The downstream that it is installed in the said valve of giving vent to anger in the said sample experimental considerations unit exhaust line are equipped with pressure transducer and multiple gases concentration sensor in this gas concentration measurement unit
Have in the combustion experimental system of this gas concentration measurement unit; In advance combustible is inserted in the cavity in the said sample experimental considerations unit, then, when said air intake valve is opened gas circuit; Gas in each gas cylinder of said air supply unit is under the control of said flow controlling unit; According to the ratio that pre-sets, flow in the said sample experimental considerations unit, close air intake valve then and stop air inlet; Then; Said control system makes the combustible burning through controlling the heating-up temperature in the sample experimental considerations unit or controlling the automatic ignition device that is arranged in said sample experimental considerations unit, after the completion of waiting to burn; With the said valve open of giving vent to anger; Then products of combustion enters said gas concentration measurement unit through this valve of giving vent to anger, after after a while, through be installed in the pressure transducer in the said sample experimental considerations unit cavity and be installed in pressure transducer in the said gas concentration measurement unit measure respectively in the said sample experimental considerations unit with said gas concentration measurement unit in pressure near balance after; Multiple gases concentration sensor through being installed in the said gas concentration measurement unit is measured the gas concentration in the gas concentration measurement unit; Thereby obtain the gas concentration in the sample experimental considerations unit, record gas componant and concentration in the products of combustion thus, waste gas is discharged in the said exhaust gas collector that links to each other with said gas concentration measurement unit at last.
3. multi-functional combustion experimental system according to claim 2; It is characterized in that; Under microgravity condition; Thereby through making inside, unit become the mode of negative pressure with extraneous communicating said gas concentration measurement unit, the gas concentration of controlling in said sample experimental considerations unit and the said gas concentration measurement unit reaches balance fast.
4. multi-functional combustion experimental system according to claim 1 and 2; It is characterized in that; Also be provided with fan in the said sample experimental considerations unit, be used for stirring the gas of sample experimental considerations unit, all gases composition can be distributed in the whole sample experimental considerations unit quickly and evenly.
5. multi-functional combustion experimental system according to claim 1 and 2 is characterized in that, also is provided with the image viewing unit in the said sample experimental considerations unit, is used for observing and writing down the combustion process of sample experimental considerations unit.
6. multi-functional combustion experimental system according to claim 1 and 2; It is characterized in that; The temperature sensor that is installed in the said sample experimental considerations unit is one group of array of temperature sensor, uses occasionally optical fiber of thermoelectricity, is used for measuring the Temperature Distribution in the sample experimental considerations unit.
7. multi-functional combustion experimental system according to claim 1 and 2 is characterized in that, the quantity of said gas cylinder is 3~10.
8. multi-functional combustion experimental system according to claim 1 and 2 is characterized in that, the quantity of said sample experimental considerations unit is 1~4.
9. multi-functional combustion experimental system according to claim 1 and 2 is characterized in that this system also comprises the fire-extinguishing test unit, to carry out fire-extinguishing test.
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CN113654804B (en) * 2021-07-15 2022-09-16 哈尔滨工程大学 Constant volume bomb air inlet system for high-speed mixing of multi-component gases and using method thereof
CN114813137B (en) * 2022-04-11 2023-02-17 哈尔滨工程大学 Constant volume bomb air inlet and exhaust controllable air exchange bottle system

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