CN206788080U - A kind of improved underground coal mine combustible combustion characteristic curve measure device - Google Patents
A kind of improved underground coal mine combustible combustion characteristic curve measure device Download PDFInfo
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- CN206788080U CN206788080U CN201720244173.7U CN201720244173U CN206788080U CN 206788080 U CN206788080 U CN 206788080U CN 201720244173 U CN201720244173 U CN 201720244173U CN 206788080 U CN206788080 U CN 206788080U
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- quartz ampoule
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- coal mine
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Abstract
A kind of improved underground coal mine combustible combustion characteristic curve measure device, belongs to underground mine fire prevention and control field.A kind of improved underground coal mine combustible combustion characteristic curve measure device of the present utility model, including air pump, airway tube, spinner flowmeter, alcohol block, reactive tank, Pitot tube, thermocouple, temperature collect module, quartz ampoule, rubber stopper, single tube inclined differential pressure meter, Drexel bottle, drying tube, aspiration pump, O2Sensor, CO sensors, CO2Sensor, notebook computer；Connected between air pump, spinner flowmeter, quartz ampoule, Drexel bottle, drying tube and aspiration pump by airway tube；During work, start air pump and light alcohol block, air is delivered in quartz ampoule through spinner flowmeter；By the temperature in thermocouple collection quartz ampoule, gas sensor gathers the gas concentration in quartz ampoule.The utility model can realize the quick, combustion pattern of Accurate Determining underground coal mine combustible, and the theoretical foundation of science is provided for mine fire emulation.
Description
Technical field
The invention belongs to underground mine fire prevention and control field, more particularly to a kind of improved underground coal mine combustible combustion
Characteristic curve determines device.
Background technology
The burning things which may cause a fire disaster combustion characteristics of mine, thermal discharge and to generate the changing rule of gas be the distinguished and admirable dynamic analog of mine fire
Premise, its computational methods are divided into three classes：The first kind, mine fire can be reflected and burning situation factor complicated and changeable influences by establishing
Burning things which may cause a fire disaster MATHEMATICAL MODEL OF COMBUSTION, the parameter value of burning things which may cause a fire disaster state is obtained through solving；Second class, simple classification is carried out to mine fire, with
It is easy to describe the combustion characteristics of mine burning things which may cause a fire disaster respectively, there is provided the result of calculation such as thermal discharge, plume generation concentration；3rd class, according to
The fire test of experimental mine, the corresponding burning things which may cause a fire disaster combustion pattern to be burnt under various environment is made, carried for distinguished and admirable dynamic analog
The burning things which may cause a fire disaster heat release for for changing over time and the growing amount of burning gases.
Generally speaking, the first kind describes the combustion characteristics of different burning things which may cause a fire disaster with more accurate mathematical modeling, but until nowadays
There are still insoluble difficulty, while under the conditions of actual mine fire, to the thick of subsurface environment and burning things which may cause a fire disaster combustion position
Slightly understand and Accurate Model and method for solving and mismatch, very big error can be still caused, so being difficult in actual mine fire
In be applied；Although the second class simple classification method can simplify many parameters, error calculated is larger；3rd class burning things which may cause a fire disaster fires
It is a kind of promising method to burn characteristic curve, and under conditions of modern technologies and experimental level, adopting said method is necessary
Various fire tests are carried out under the conditions of experimental mine, it is necessary to which substantial amounts of fund, current China are also real without mine fire is used for
The mine tested, but the combustion process that mine burning things which may cause a fire disaster is simulated by way of laboratory experiment can equally obtain approximate colliery
The combustion pattern of underground combustible, selecting burning things which may cause a fire disaster combustion pattern more can be true to mine fire progress simulation calculation
Reflection fire smoke flow temperature changes with time rule, is the Main Trends of The Development of current fire simulation technology.
In order that mine fire simulation software more accords with when carrying out simulation calculation to fire smoke flow flowing and Temperature Distribution
Colliery scene actual conditions are closed, device is determined to measure by designing a kind of improved underground coal mine combustible combustion characteristic curve
The combustion pattern of underground coal mine combustible, and obtained combustible combustion characteristic curve is soft applied to mine fire emulation
In part.
The content of the invention
In view of the deficienciess of the prior art, the invention provides a kind of improved underground coal mine combustible combustion characteristic is bent
Line determines device, and the combustion pattern of underground coal mine combustible is determined using experimental provision, experimental cost is reduced, is mine
Fire simulation provides the foundation of science.
To achieve the above object, the present invention uses following technical scheme：
A kind of improved underground coal mine combustible combustion characteristic curve measure device, including air pump, airway tube, rotor stream
Gauge, alcohol block, reactive tank, Pitot tube, thermocouple, temperature collect module, quartz ampoule, rubber stopper, single tube inclined differential pressure meter, wash
Gas cylinder, drying tube, aspiration pump, O2Sensor, CO sensors, CO2Sensor, notebook computer；
Described air pump is connected by one end of airway tube and spinner flowmeter, and the described spinner flowmeter other end leads to
The rubber stopper that airway tube is crossed with quartz ampoule one end is connected, and described Drexel bottle passes through airway tube and the rubber stopper of the quartz ampoule other end
Connection, described drying tube are connected by airway tube with Drexel bottle, and described aspiration pump is connected by airway tube with drying tube, is taken out
The other end of air pump is connected by airway tube with atmospheric environment, and described temperature collect module one end is connected with thermocouple, another
End is connected by data wire with notebook computer；
The both sides of the quartz ampoule are closed by rubber stopper respectively, and the rubber stopper of the quartz ampoule inlet air side is provided with air intake vent,
The rubber stopper of the quartz ampoule air side is provided with air outlet, Pitot tube socket and thermocouple socket；
Described reactive tank is located at the inlet air side of quartz ampoule, and the alcohol block is located at the bottom of reactive tank；
Described O2Sensor, CO sensors, CO2Airway tube of the sensor between connection aspiration pump and atmospheric environment
Interior, described O2Sensor, CO sensors, CO2Connected between sensor and notebook computer by data wire；
Further, described O2Sensor is used to determine the oxygen concentration in plume to be measured, for calculating combustible combustion
Oxygen demand and OUR during burning；
Further, described CO sensors are used to determine the CO gas concentrations in plume to be measured, obtain combustible combustion
During caused CO generating rates；
Further, described CO2Sensor is used to determine the CO in plume to be measured2Gas concentration, obtain combustible combustion
During caused CO2Generating rate；
Described air pump is used to provide ventilation power for whole test device, ensures flammable in reactive tank in quartz ampoule
Thing has enough oxygen to participate in reaction.
Described spinner flowmeter is used to control the air mass flow being pumped into by air, wherein by two spinner flowmeter strings
The air that UNPROFOR card flows through is in stable state, prevents because air pump pressure instability causes the violent ripple of spinner flowmeter reading
It is dynamic；
The combustible that described alcohol block is used in heating response groove；
Described reactive tank is used to contain combustible, and combustion reaction occurs in reactive tank for combustible；
Described Pitot tube and single tube inclined differential pressure meter are used for the plume ram compression for determining burning things which may cause a fire disaster downwind side in quartz ampoule, and lead to
That crosses calculating obtains burning things which may cause a fire disaster downwind side plume flowing velocity；
Further, described Pitot tube is anti-blocking Pitot tube；
Described thermocouple is used to determine burning things which may cause a fire disaster downwind side plume temperature, and temperature signal is sent into temperature collect module
In；
Described temperature collect module is used to receive the temperature signal from thermocouple, and temperature signal is converted into numeral
Signal is delivered in notebook computer；
Described quartz ampoule is used for placing response groove and provides the passage of plume flowing；
Described Drexel bottle is used to filter the debris in plume to be measured and reduces the temperature of plume to be measured, ensures cigarette to be measured
Temperature is flowed in the operating temperature range of gas sensor；
Further, what is contained in described Drexel bottle is water；
Described drying tube is used to remove moisture contained in plume to be measured；
Described aspiration pump is used to extract the plume to be measured in drying tube, prevents the resistance mistake due to Drexel bottle and drying tube
The flow of plume is influenceed greatly, ensures O2Sensor, CO sensors, CO2Sensor has enough under test gas to be available for determining；
Described notebook computer is used to gather by the data signal and CO, O of temperature collect module conversion2、CO2Gas
Data signal, and store data in hard disk, while respective curve is shown in notebook computer screen.
Using a kind of combustion of described improved underground coal mine combustible combustion characteristic curve measure device measure combustible
Characteristic curve is burnt, is comprised the following steps：
Step 1：The quantitative coal sample processed is taken to be put into the reactive tank in quartz ampoule with balance；
Step 2：Light the alcohol block of reactive tank bottom；
Step 3：Connect the power supply of air pump and aspiration pump and start air pump and aspiration pump；
Step 4：The flow value of two spinner flowmeters is adjusted, and ensures the spinner flowmeter close to quartz pipe side
Float stable is near set scale；
Step 5：Start the corresponding program in notebook computer, collecting temperature and gas concentration, and read single tube simultaneously and incline
The reading of oblique differential manometer；
Step 6：Combustible afterburnt in question response groove, the experimental data that arrangement notebook computer gathers obtain flammable
Oxygen demand change curve, CO generating rates change curve, CO in thing combustion process2Generating rate change curve.
Step 7：According to the reading of single tube inclined differential pressure meter, according to the speed of equation below calculating plume；
In formula：V --- flame range downwind side smog velocity, m/s；
K --- single tube inclined differential pressure meter inclination factor；
ρ0--- alcohol density, g/cm in single tube inclined differential pressure meter3；
ρ --- atmospheric density, g/cm3；
G --- acceleration of gravity, m/s2；
H --- single tube inclined differential pressure meter reading, mm.
Step 9：It is the HRR that following formula calculate burning things which may cause a fire disaster according to oxygen consumption principle, finally obtains combustible combustion
Heat release rate curve.
A in formula --- drift section accumulates, m2；
μ --- tunnel inlet air mean wind speed, m/s；
T --- tunnel inlet air temperatures, K；
T ' --- the temperature at plume ram compression measuring point, K；
--- tunnel inlet air oxygen purity, %；
μ ' --- oxygen purity in smoke evacuation section plume, %；
--- smoke evacuation section plume average speed, m/s；
E --- consumption unit mass oxygen institute liberated heat, E=13.1MJ/kg.
A kind of improved underground coal mine combustible combustion characteristic curve measure device of the present invention utilizes thermal source active
Heating combustible simulates the combustion process of underground coal mine combustible, and during gathering combustible combustion according to respective sensor
Caused CO concentration, CO2Concentration, O2Concentration and heat release rate.
A kind of improved underground coal mine combustible combustion characteristic curve measure device of the present invention has advantages below：
1st, experimental provision simple structure of the present invention, cost is low, and can quickly, repeatedly test；
2nd, it is more including coal, timber, cable, belt etc. can directly to determine underground coal mine for experimental provision of the present invention
CO during kind combustible combustion2、O2, CO change curves, the heat release rate curve of indirect determination combustible；
3rd, it is special can to determine burning of the combustible in the form of two kinds of incendiary source and line burning things which may cause a fire disaster for experimental provision of the present invention
Linearity curve.
Brief description of the drawings
Fig. 1 is the structure that a kind of improved underground coal mine combustible combustion characteristic curve of the present invention determines device
Figure.
In Fig. 1,1-air pump；2-airway tube；3-spinner flowmeter；4-alcohol block；5-reactive tank；6-Pitot
Pipe；7-thermocouple；8-quartz ampoule；9-rubber stopper；10-water；11-Drexel bottle；12-drying tube；13-aspiration pump；14—
O2Sensor；15-CO sensors；16—CO2Sensor；17-notebook computer；18-temperature collect module；19-single tube inclines
Oblique differential manometer.
Embodiment
With reference to embodiment, the present invention is described in further detail.
Embodiment 1
As shown in figure 1, a kind of improved underground coal mine combustible combustion characteristic curve measure device, including air pump 1, lead
It is tracheae 2, spinner flowmeter 3, alcohol block 4, reactive tank 5, Pitot tube 6, thermocouple 7, quartz ampoule 8, rubber stopper 9, Drexel bottle 11, dry
Dry pipe 12, aspiration pump 13, O2Sensor 14, CO sensors 15, CO2Sensor 16, notebook computer 17, temperature collect module 18,
Single tube inclined differential pressure meter 19.
Described air pump 1 is connected by airway tube 2 with one end of spinner flowmeter 3, and described spinner flowmeter 3 is another
End is connected by airway tube 2 with the rubber stopper 9 of the one end of quartz ampoule 8, and described Drexel bottle is another by airway tube 2 and quartz ampoule 8
The rubber stopper 9 at end is connected, and described drying tube 12 is connected by airway tube 2 with Drexel bottle 11, and described aspiration pump 13 is by leading
Tracheae 2 is connected with drying tube 12, and the other end of aspiration pump 13 is connected by airway tube 2 with atmospheric environment, described temperature acquisition
The one end of module 18 is connected with thermocouple 7, and the other end is connected by data wire with notebook computer 17；
The both sides of the quartz ampoule 8 are closed by rubber stopper 9 respectively, the rubber stopper 9 of the inlet air side of quartz ampoule 8 be provided with into
Air port, the rubber stopper 9 of the air side of quartz ampoule 8 are provided with air outlet, Pitot tube socket and thermocouple socket；
Described reactive tank is located at the inlet air side of quartz ampoule, and the alcohol block 4 is located at the bottom of reactive tank 5；
Described O2Sensor 14, CO sensors 15, CO2Sensor 16 is between connection aspiration pump 13 and atmospheric environment
Airway tube 2 in, described O2Sensor 13, CO sensors 14, CO2Pass through data between sensor 15 and notebook computer 17
Line connects；
Described air pump 1 is used to provide power of divulging information for whole test device, in the interior reactive tank 5 for ensureing quartz ampoule 8
Combustible there is enough oxygen to participate in reaction.
Described spinner 3 is counted for controlling the air mass flow being sent into by air pump 1, wherein by two spinners 3
The air that meter series connection ensures to flow through is in stable state, prevents because the pressure instability of air pump 1 causes the reading of spinner flowmeter 3 acute
Strong fluctuation, the range of the spinner flowmeter 3 is 80-400m3/h；
The combustible that described alcohol block 4 is used in heating response groove 5；
Described reactive tank 5 is used to contain combustible, and in reactive tank 5 combustion reaction occurs for combustible；
Described Pitot tube 6 and single tube inclination pressure difference 9 count the plume ram compression for determining burning things which may cause a fire disaster downwind side in quartz ampoule 8,
And burning things which may cause a fire disaster downwind side plume flowing velocity is obtained by calculating；
Further, described Pitot tube 6 is anti-blocking Pitot tube；
Described thermocouple 7 is used to determine burning things which may cause a fire disaster downwind side plume temperature, and temperature signal is sent into temperature acquisition mould
In block 18；
Described temperature collect module 18 is used to receive the temperature signal from thermocouple 7, and temperature signal is converted to
Data signal is delivered in notebook computer 17；
Described quartz ampoule 8 is used for placing response groove 5 and provides the passage of plume flowing；
Described Drexel bottle 11 is used to filter the debris in plume to be measured and reduces the temperature of plume to be measured, ensures to be measured
Plume temperature is in the operating temperature range of gas sensor；
Further, what is contained in described Drexel bottle 11 is water；
Described drying tube 12 is used to remove moisture contained in plume to be measured；
Described aspiration pump 13 is used to extract the plume to be measured in drying tube 12, prevents due to Drexel bottle 11 and drying tube 12
Resistance it is excessive and influence the flow of plume, ensure O2Sensor 14, CO sensors 15, CO2Sensor 16 has enough to be measured
Gas；
Described O2Sensor 14 is used to determine oxygen concentration in plume to be measured, for during calculating combustible combustion
Oxygen demand and OUR；
Described CO sensors 15 are used to determine the CO gas concentrations in plume to be measured, obtain producing during combustible combustion
Raw CO generating rates；
Described CO2Sensor 16 is used to determine the CO in plume to be measured2Gas concentration, during obtaining combustible combustion
Caused CO2Generating rate；
Further, described O2The measurement of concetration scope of sensor 14 is that the concentration of 0~22%, CO sensors 15 is surveyed
Measure scope 0~15%, CO2The measurement of concetration scope 0~22% of sensor 16；
Described notebook computer 17 is used to gather the data signal changed by temperature collect module 18 and CO, O2、CO2Gas
The data signal of body, and store data in hard disk, while show respective curve in the screen of notebook computer 17.
Using a kind of combustion of described improved underground coal mine combustible combustion characteristic curve measure device measure combustible
Characteristic curve is burnt, is comprised the following steps：
Step 1：The quantitative coal sample processed is taken to be put into the reactive tank 5 in quartz ampoule 8 with balance；
Step 2：Light the alcohol block 4 of the bottom of reactive tank 5；
Step 3：Connect the power supply of air pump 1 and aspiration pump 13 and start air pump 1 and aspiration pump 13；
Step 4：The flow value of two spinner flowmeters 3 is adjusted, and ensures the spinner flowmeter close to the side of quartz ampoule 8
3 float stable is near set scale；
Step 5：Start the corresponding program in notebook computer 17, collecting temperature and gas concentration, and read single tube simultaneously
The reading of inclined differential pressure meter 19；
Step 6：In the combustible afterburnt in question response groove 5, arrange the experimental data that notebook computer 17 gathers and obtain
Oxygen demand change curve, CO generating rates change curve, CO during combustible combustion2Generating rate change curve.
Step 7：According to the reading of single tube inclined differential pressure meter 19, according to the speed of equation below calculating plume；
In formula：V --- flame range downwind side smog velocity, m/s；
K --- single tube inclined differential pressure meter inclination factor；
ρ0--- alcohol density, g/cm in single tube inclined differential pressure meter3；
ρ --- atmospheric density, g/cm3；
G --- acceleration of gravity, m/s2；
H --- single tube inclined differential pressure meter reading, mm.
Step 9：It is the HRR that following formula calculate burning things which may cause a fire disaster according to oxygen consumption principle, finally obtains combustible combustion
Heat release rate curve.
A in formula --- drift section accumulates, m2；
μ --- tunnel inlet air mean wind speed, m/s；
T --- tunnel inlet air temperatures, K；
T ' --- the temperature at plume ram compression measuring point, K；
--- tunnel inlet air oxygen purity, %；
μ ' --- oxygen purity in smoke evacuation section plume, %；
--- smoke evacuation section plume average speed, m/s；
E --- consumption unit mass oxygen institute liberated heat, E=13.1MJ/kg.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations, although
The present invention is described in detail with reference to the foregoing embodiments, those skilled in the art can be remembered to foregoing embodiments
The technical scheme of load is modified, or equivalent substitution is carried out to which part technical characteristic, and these modifications or replacement, and
The essence of appropriate technical solution is not set to depart from the scope of various embodiments of the present invention technical scheme.
Claims (4)
- A kind of 1. improved underground coal mine combustible combustion characteristic curve measure device, it is characterised in that the measure device bag Include air pump, airway tube, spinner flowmeter, alcohol block, reactive tank, Pitot tube, thermocouple, temperature collect module, quartz ampoule, rubber Plug, single tube inclined differential pressure meter, Drexel bottle, drying tube, aspiration pump, O2Sensor, CO sensors, CO2Sensor, notebook electricity Brain；Connected in series by airway tube between described spinner flowmeter；Described air pump is connected by one end of airway tube and spinner flowmeter, and the described spinner flowmeter other end is by leading Tracheae is connected with the rubber stopper of quartz ampoule one end；Described Drexel bottle is connected by airway tube with the rubber stopper of the quartz ampoule other end；Described drying tube is connected by airway tube with Drexel bottle；Described aspiration pump is connected by airway tube with drying tube, and the other end of aspiration pump is connected by airway tube and atmospheric environment Connect；Described temperature collect module one end is connected with thermocouple, and the other end is connected by data wire with notebook computer.
- 2. improved underground coal mine combustible combustion characteristic curve measure device according to claim 1, it is characterised in that Described O2Sensor, CO sensors, CO2Sensor is described in the airway tube between connection aspiration pump and atmospheric environment O2Sensor, CO sensors, CO2Connected between sensor and notebook computer by data wire.
- 3. improved underground coal mine combustible combustion characteristic curve measure device according to claim 1, it is characterised in that Described reactive tank is located at the inlet air side of quartz ampoule, and the alcohol block is located at the bottom of reactive tank.
- 4. improved underground coal mine combustible combustion characteristic curve measure device according to claim 1, it is characterised in that The both sides of the quartz ampoule are closed by rubber stopper respectively, and the rubber stopper of the quartz ampoule inlet air side is provided with air intake vent, the quartz The rubber stopper of pipe air side is provided with air outlet, Pitot tube socket and thermocouple socket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720244173.7U CN206788080U (en) | 2017-03-13 | 2017-03-13 | A kind of improved underground coal mine combustible combustion characteristic curve measure device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720244173.7U CN206788080U (en) | 2017-03-13 | 2017-03-13 | A kind of improved underground coal mine combustible combustion characteristic curve measure device |
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| Publication Number | Publication Date |
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| CN206788080U true CN206788080U (en) | 2017-12-22 |
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|---|---|---|---|
| CN201720244173.7U Expired - Fee Related CN206788080U (en) | 2017-03-13 | 2017-03-13 | A kind of improved underground coal mine combustible combustion characteristic curve measure device |
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|---|---|
| CN (1) | CN206788080U (en) |
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2017
- 2017-03-13 CN CN201720244173.7U patent/CN206788080U/en not_active Expired - Fee Related
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