CN107247126A - Fuel gas limit oxygen concentration parametric measurement device and operating method - Google Patents
Fuel gas limit oxygen concentration parametric measurement device and operating method Download PDFInfo
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- CN107247126A CN107247126A CN201710443836.2A CN201710443836A CN107247126A CN 107247126 A CN107247126 A CN 107247126A CN 201710443836 A CN201710443836 A CN 201710443836A CN 107247126 A CN107247126 A CN 107247126A
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 93
- 239000001301 oxygen Substances 0.000 title claims abstract description 93
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 93
- 239000002737 fuel gas Substances 0.000 title claims abstract description 34
- 238000005259 measurement Methods 0.000 title claims abstract description 13
- 238000011017 operating method Methods 0.000 title claims abstract description 9
- 238000004880 explosion Methods 0.000 claims abstract description 72
- 238000012360 testing method Methods 0.000 claims abstract description 71
- 239000007789 gas Substances 0.000 claims abstract description 49
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 238000009826 distribution Methods 0.000 claims abstract description 14
- 239000002360 explosive Substances 0.000 claims abstract description 11
- 238000012544 monitoring process Methods 0.000 claims abstract description 7
- 230000002457 bidirectional effect Effects 0.000 claims description 21
- 239000000523 sample Substances 0.000 claims description 20
- 230000004224 protection Effects 0.000 claims description 12
- 238000005070 sampling Methods 0.000 claims description 12
- 238000002474 experimental method Methods 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 6
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 6
- 150000002910 rare earth metals Chemical class 0.000 claims description 6
- 238000005422 blasting Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 238000005474 detonation Methods 0.000 claims description 3
- 238000010304 firing Methods 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 239000002775 capsule Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 239000011261 inert gas Substances 0.000 abstract description 8
- 238000013461 design Methods 0.000 abstract description 2
- 238000003556 assay Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels; Explosives
- G01N33/225—Gaseous fuels, e.g. natural gas
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Chemical Kinetics & Catalysis (AREA)
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Abstract
The present invention relates to a kind of fuel gas limit oxygen concentration parametric measurement device and operating method, including band fast sealing spiral cover, explosion test tank body of container, the accurate ratio air distributing device of multichannel, gas blender device, oxygen concentration detection device, igniter, control unit, data acquisition unit, computer radio monitoring system and base, multichannel precision ratio air distribution system carries out distribution and sample introduction, realizes the measure to fuel gas limit oxygen concentration under normal temperature and pressure；Explosive container inner bottom part installs gas agitating system, realizes that fuel gas is quickly well mixed in explosion test container tank；Fast sealing spiral cover realizes fast sealing, by the volume fraction for increasing inert gas, determine the limit air concentration LAC of fuel gas, and then calculate the limit oxygen concentration LOC for determining fuel gas to be measured, have the technical effect that and use modularized design, performance is stable, rational in infrastructure, simple operation, safe and reliable, and the measure of a variety of explosive parameters can be realized simultaneously.
Description
Technical field
Device, more particularly to a kind of fuel gas limit oxygen concentration parametric measurement are determined the present invention relates to a kind of explosive parameters
Device and operating method.
Background technology
Limit oxygen concentration content and explosion limit characterize fuel gas（Liquid vaporses）Two important parameters of blast characteristics.
Many industrial production occasions, assign imflammable gas, combustible vapor or its mixture oxygen concentration as important safe practice index.
Limit oxygen concentration determination can provide foundation for the oxygen concentration control of explosive atmosphere, help to prevent and reduce fuel gas fire
Explosion accident, or fuel gas environment and its equipment or container provide oxygen concentration police instruction.
Measure relevant criterion on fuel gas limit oxygen concentration mainly has BS EN 1839:2003、DIN EN
14756-2007、ASTM E2079-07(2013)、ASTM E 681：2009（2015）Deng domestic not yet to promulgate fuel gas pole
Limit the relevant criterion that oxygen concentration, maximum explosion pressure and blast pressure climbing speed are determined, usual foundation《Dust cloud LEL
Method for measurement of concentration》（GB/T 16425-1996）Using 20L spherical stainless steel blasting pot,《Dust cloud maximum explosion pressure and
Maximum pressure raise assay method》（GB/T 16426-1996）Fuel gas is carried out using 1m3 cylinder explosion room quick-fried
The analogy test of fried parameter,.At present, the measure device of China also not specifically designed for fuel gas limit oxygen concentration determination, with
Realize quick oxygen concentration verification and determine.
The content of the invention
In view of the problem of prior art is present, the present invention provide a kind of fuel gas limit oxygen concentration parametric measurement device and
Operating method, carries out distribution and sample introduction using the accurate ratio air distribution system of multichannel, realizes under normal temperature and pressure to fuel gas pole
The measure of oxygen concentration and the measure of a variety of explosive parameters are limited, concrete technical scheme is, a kind of fuel gas limit oxygen concentration parameter
Determine device, including the accurate ratio air distributing device of band fast sealing spiral cover, explosion test tank body of container, multichannel, gas blender
Device, oxygen concentration detection device, igniter, control unit, data acquisition unit, computer radio monitoring system and base,
It is characterized in that：Described explosion test container tank is 20 liters of spherical stainless steel blasting pot, in spheroid upper and lower surface centre bit
Upper flange and bottom flange are fixed at horizontalization opening, opening respectively, front and rear surfaces center is opened flat at mouth, opening and is separately installed with
Observation window, mounting flange, left and right center centre of surface position be opened flat at mouth, opening be respectively mounted automatic distributing injection port,
Sensor mounting flange, the upper surface of upper flange is machined with O-ring groove and is provided with O-ring, while little gear is fixed with, small tooth
There is handle on wheel, igniter is installed in fast sealing spiral cover center, and two electrode tip holders are symmetrically fixed on fast sealing spiral cover
Center both sides, make that two ignitor pins in two electrode tip holders are relative, gap is 3 mm ~ 7.5mm, fast sealing spiral cover with
The upper flange of explosion test container tank is threaded togather, simultaneously, one section of external tooth on the outer circumference face of upper end, with upper flange
Little gear mesh together, pressure sensor is fixed on the sensor mounting flange of explosion test container tank, and is radially orientated
The igniting source position of igniter, pressure sensor is connected with data acquisition unit, and the bottom flange of explosion test container tank is fixed
In on base, the axle sleeve of gas blender device is fixed in the flange of bottom, the output interface of multichannel precision ratio air distributing device with
The automatic distributing injection port of explosion test container tank is connected with appendix, oxygen concentration detection device, and explosion test container tank is consolidated
Determine the input/output interface and oxygen sensor annular seal space of installation oxygen concentration detection device on flange, control unit, data acquisition
Unit is connected by data wire, is put down by antenna and computer radio monitoring system wireless connection.
The accurate ratio air distributing device of described multichannel, including vacuum system, multi-channel parallel gas sampling pipeline, convergence tube
Road, distribution pressure sensor and output interface, the vavuum pump of vacuum system are connected with bidirectional vacuum pump protection magnetic valve, and are accessed
Converge in pipeline, gas sampling pipeline is composed in series by a bidirectional protective magnetic valve and a gas flow regulating valve all the way,
Number road gas sampling pipeline, which is all connected to, converges pipeline, and output interface connects with the automatic distributing injection port in explosion test container tank
Connect, vavuum pump and control system, bidirectional protective magnetic valve on control correspondence gas sampling pipeline is turned on and off, by with
Air pressure force snesor detects explosion test container pressure inside the tank, you can realize the accurate distribution of multichannel.
Described gas blender device, including blade, internal rotor, seal isolation set, outer rotor, axle sleeve, motor, wherein
Outside is inlaid with inner side on rare earth permanent magnet strong magnets N poles, outer rotor by equal subangle and is inlaid with by same angle on internal rotor
The axle connection of rare earth permanent magnet strong magnets S poles, outer rotor and motor, blade warp beam sleeve is fixed with internal rotor, control system control
Motor is rotated, and drives outer rotor to rotate, and is attracted to drive internal rotor and blade to rotate by magnetic force, is realized in explosion test container tank
The uniform mixing of gas.
Described oxygen concentration detection device, including oxygen concentration detector, oxygen sensor, oxygen sensor with containment vessel
Annular seal space, pipe circle pump, bidirectional vacuum pump protection magnetic valve, input and output pipe, two input and output pipe one end pass through welding
Stainless steel tube on flange inside explosion test tank body of container with connecting, and the other end connects two bidirectional vacuum pump protections respectively
Magnetic valve one end, two another another two input and output pipes of termination of bidirectional vacuum pump protection magnetic valve and connecting pipe circulation respectively
Pump two ends, the probe for the oxygen sensor being placed in oxygen sensor annular seal space accesses one of bidirectional vacuum pump protection electromagnetism
In valve other end input and output pipe, oxygen sensor with containment vessel oxygen concentration detector be electrically connected, pipe circle pump with
Control system is electrically connected, control system control pipeline circulating pump, the folding of control input efferent duct, when opening, by explosion test
Gas in container tank is extracted out, in the oxygen concentration detector detection explosion test container tank by oxygen sensor, with containment vessel
Oxygen concentration, during conjunction, oxygen in input and output pipe is returned in explosion test container tank.
Described igniter, including electrode tip holder, ignitor, ignitor pin, ignitor top is provided with electrode
Pin, ignitor is fixed in electrode tip holder.
Have on described fast sealing spiral cover, its lower end face of cylinder and spiral shell in the upper flange at the top of explosion test tank body of container
One section of external tooth is machined with the external screw thread of line matching sum, fast sealing spiral cover upper end outer circumference, the phase with being fixed on upper flange
Little gear with modulus is engaged, handle on rotation pinion, drives the rotation of fast sealing spiral cover, dextrorotation handle can be close
Explosion test tank body of container is sealed, rotate counterclockwise can open fast sealing spiral cover, realize fast sealing and dismounting.
Operating method comprises the following steps,（One）Oxygen gauge is installed in tank of compressed air first, and by oxygen gauge
Output end connected by high-pressure rubber pipe and the input of equipment, cover and tighten container cover, open manual relief valve, make container
Interior pressure is with after extraneous balance, turning off relief valve, opening vacuum-pump power supply；（Two）When carrying out flammable gas explosion experiment,
Corresponding sparking mode and ignition energy are selected according to the species of gas, steam, point is carried out to fuel gas using pulse firing
Fire, tests explosion test container pressure inside the tank using pressure sensor and changes；（Three）Experimental rig main power source is opened, compression is outwarded winding
Air steel cylinder main valve, adjusts pressure, output pressure is more than 1Mpa, is sampled with air bag, air bag is connected into sample input port,
One to six road sample introductions are selected according to sample situation, and it is to enter explosion test after sample is mixed in pipeline to hold to open airbag valve
Device tank；
（Four）Open agitating device and adjust rotating speed, sample gas is quickly mixed, open oxygen concentration instrument input, output end valve
Door, detects oxygen concentration, it is to be mixed it is uniform after, close valve, start explosion test；（Five）When progress explosive parameters test experiments
When, using wireless synchronous control system simultaneously or delay start igniter, pass through observation window observe detonation propagation process, utilize
Test system and test related limit oxygen concentration and explosive parameters.
The solution have the advantages that, rational in infrastructure using modularized design, performance is stable, simple operation, safe and reliable.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the fast sealing screw cap structure figure of the present invention；
Fig. 3 is the explosion test container tank structure front view of the present invention；
Fig. 4 is the explosion test container jar structure rearview of the present invention；
Fig. 5 is the accurate ratio air distribution system structure chart of multichannel of the present invention；
Fig. 6 is the gas agitating system structure chart of the present invention；
Fig. 7 is the oxygen concentration detection system structure chart of the present invention；
Fig. 8 is the ignition system structure chart of the present invention.
Embodiment
As shown in Fig. 1,3,4, fuel gas limit oxygen concentration determination apparatus, including band fast sealing spiral cover 1, explosion test
The accurate ratio air distributing device 3 of tank body of container 2, multichannel, gas blender device 4, oxygen concentration detection device 5, igniter 6, control
Unit 7 processed, data acquisition unit 8, computer radio monitoring system 9 and base 44 are constituted, and described explosion test container tank 2 is
20 liters of spherical stainless steel blasting pot, is opened flat at mouth, opening in spheroid upper and lower surface center and fixes the He of upper flange 10 respectively
Bottom flange 11, front and rear surfaces center, which is opened flat at mouth, opening, is separately installed with observation window 16, mounting flange 17, left and right center
Surface of position center, which is opened flat at mouth, opening, is respectively mounted automatic distributing injection port 19, sensor mounting flange 20, upper flange
10 upper surface is machined with O-ring groove and is provided with O-ring, while being fixed with little gear 43, has handle in little gear 43, quickly
Seal the center of spiral cover 1 and igniter 6 is installed, two electrode tip holders 13 are symmetrically fixed on the center both sides of fast sealing spiral cover 1, made
Two ignitor pins 15 in two electrode tip holders 13 are relative, gap is 5 mm, and fast sealing spiral cover 1 holds with explosion test
The upper flange 10 of device tank 2 is threaded togather, simultaneously, one section of external tooth on the outer circumference face of upper end, small with upper flange 10
Gear 43 meshes together, and pressure sensor 21 is fixed on the sensor mounting flange 20 of explosion test container tank 2, and radially towards
To the igniting source position of igniter 15, pressure sensor 21 is connected with data acquisition unit 8, the bottom of explosion test container tank 2
Flange 11 is fixed on base 44, and the axle sleeve 39 of gas blender device 4 is fixed in bottom flange 11, multichannel precision ratio distribution
The output interface of device 3 is connected with the automatic distributing injection port 19 of explosion test container tank 2 with appendix, oxygen concentration detection device
5, the input/output interface 26 and oxygen sensor of oxygen concentration detection device 5 are installed on the mounting flange 17 of explosion test container tank 2
Device annular seal space 23, control unit 7, data acquisition unit 8 are connected by data wire, are put down by antenna and computer radio monitoring system
Unite 9 wireless connections.
As shown in figure 5, the accurate ratio air distributing device 3 of described multichannel, including vacuum system, multi-channel parallel gas sampling pipe
Road, converge pipeline 28, distribution pressure sensor 29 and output interface 30, vavuum pump 31 and the bidirectional vacuum pump of vacuum system are protected
Magnetic valve 32 is connected, and access converges in pipeline 28, and gas sampling pipeline is by a bidirectional protective magnetic valve 34 and one all the way
Gas flow regulating valve 33 is composed in series, and number road gas sampling pipeline, which is all connected to, converges pipeline 28, output interface 30 and blast
Automatic distributing injection port 19 on experiment container tank 2 is connected, vavuum pump 31 and control system 7, control correspondence gas sampling pipeline
On bidirectional protective magnetic valve 34 be turned on and off, pass through distribution pressure sensor 29 and detect the internal pressure of explosion test container tank 2
Power, you can realize the accurate distribution of multichannel.
As shown in fig. 6, described gas blender device 4, including blade 35, internal rotor 36, seal isolation cover 37, turned outside
Outside is inlaid with rare earth permanent magnet strong magnets N poles 41 by equal subangle on son 38, axle sleeve 39, wherein motor 40, internal rotor 36, outside
Inner side is inlaid with rare earth permanent magnet strong magnets S poles 42 by same angle on rotor 38, and outer rotor 38 is connected with the axle of motor 40, leaf
The warp beam sleeve 39 of piece 35 is fixed with internal rotor 36, and the controlled motor 40 of control system 7 is rotated, and is driven outer rotor 38 to rotate, is passed through magnetic force
Attract to drive internal rotor 36 and blade 35 to rotate, realize the uniform mixing of gas in explosion test container tank 2.
As shown in fig. 7, described oxygen concentration detection device 5, including oxygen concentration detector 18, oxygen sensor with containment vessel
Device 22, oxygen sensor annular seal space 23, pipe circle pump 24, bidirectional vacuum pump protection magnetic valve 32, input and output pipe 26, two
The one end of input and output pipe 26 is connected by the stainless steel tube being welded on flange with the inside of explosion test tank body of container 2, the other end
Two bidirectional vacuum pump protection magnetic valve 32 one end, two another terminations another two of bidirectional vacuum pump protection magnetic valve 32 are connected respectively
Root input and output pipe 26 and the respectively two ends of connecting pipe circulating pump 24, the oxygen sensor being placed in oxygen sensor annular seal space 23
22 probe is accessed in one of bidirectional vacuum pump protection other end input and output pipe 26 of magnetic valve 32, oxygen sensor 22 with
Oxygen concentration detector 18 with containment vessel is electrically connected, and pipe circle pump 24 is electrically connected with control system 7, and control system 7 is controlled
The folding of tubing giving sufficient strength circulating pump 24, control input efferent duct 26, when opening, the gas in explosion test container tank 2 is extracted out, passed through
Oxygen concentration in oxygen sensor 22, the detection explosion test of oxygen concentration detector 18 container tank 2 with containment vessel, will be defeated during conjunction
Enter oxygen in efferent duct 26 to return in explosion test container tank 2.
As shown in figure 8, described igniter 6, including electrode tip holder 13, ignitor 14, ignitor pin 15, ignition power
The top of pole 14 is provided with electrode needle 15, and ignitor 14 is fixed in electrode tip holder 13.
As shown in Fig. 2 having on described fast sealing spiral cover 1, its lower end face of cylinder and the top of explosion test tank body of container 2
The internal thread of upper flange 10 match the external screw thread of sum, be machined with one section of external tooth in the upper end outer circumference of fast sealing spiral cover 1, it is and solid
Little gear 43 due to the identical modulus of upper flange 10 is engaged, handle on rotation pinion 43, drives fast sealing spiral cover 1 to revolve
Turn, dextrorotation handle can contained explosion experiment container tank body 2, rotate counterclockwise can open fast sealing spiral cover 1, realize
Fast sealing and dismounting.
Operating method comprises the following steps,
（One）Oxygen gauge is installed in tank of compressed air first, and the output end of oxygen gauge is passed through into high-pressure rubber pipe and equipment
Input connection, cover and tighten container cover, open manual relief valve, make container inner pressure with after extraneous balance, turning off
Relief valve, opens vacuum-pump power supply；
（Two）When carrying out flammable gas explosion experiment, corresponding sparking mode and igniting are selected according to the species of gas, steam
Energy, is lighted a fire using pulse firing to fuel gas, and testing explosion test container pressure inside the tank using pressure sensor becomes
Change；
（Three）Experimental rig main power source is opened, tank of compressed air main valve is outwarded winding, pressure is adjusted, is more than output pressure
1Mpa, is sampled with air bag, and air bag is connected into sample input port, selects one to six road sample introductions according to sample situation, and open gas
Capsule valve is to enter explosion test container tank after sample is mixed in pipeline；
（Four）Open agitating device and adjust rotating speed, sample gas is quickly mixed, open oxygen concentration instrument input, output end valve
Door, detects oxygen concentration, it is to be mixed it is uniform after, close valve, start explosion test；
（Five）When carry out explosive parameters test experiments when, using wireless synchronous control system simultaneously or delay start igniter,
Detonation propagation process is observed by observation window, test system and test related limit oxygen concentration and explosive parameters are utilized.
Assay method is to determine the blast area of fuel gas, air and inert gas, by the volume for increasing inert gas
Fraction, determines the limit air concentration LAC of fuel gas, and then calculate the limit oxygen concentration LOC for determining fuel gas to be measured, step
It is rapid as follows,
1）Determine the explosion limit of fuel gas（LEL~UEL）, determined to treat that side is flammable according to recommendatory standard GB/T/T12474
The explosion limit of gas（LEL~UEL）；
2）Combustable gas concentration to be measured is set as XTS=1.2LEL, changes air and inert gas concentration is determined and equivalent concentration line
Point of intersection explosion limit（Air and inert gas concentration are respectively Xair, L、XIn, L）If starting inert gas concentration is set as body
The % of fraction 50, adds inert gas concentration with the % of volume fraction 5 differential increase, differential during the near-by explosion limit to be reduced to body
The % of fraction 0.5；
3）As UEL≤0.8 × (100-Xair, L) when, the air concentration X of fixed gaseous mixtureair, LIf combustable gas concentration is less than
The % of volume fraction 5, it is 0.2% to change increment, otherwise it is 0.5% to change increment, is respectively determined 2 times below and above on summit undetermined,
Until it is determined that the limit air concentration LAC of vertex position；
4）As UEL ＞ 0.8 × (100-Xair, L) when, explosion limit should be by determining along at least 4 near UEL UEL lines
Individual equal spaced points determine that inert gas concentration is definite value during measure, with the volume of the step-size change air of volume fraction 0.5%
Fraction concentration, until determination limit air concentration point LAC；
5）And then calculate the limit oxygen concentration LOC=0.209 × LAC for determining fuel gas to be measured.
Claims (7)
1. a kind of fuel gas limit oxygen concentration parametric measurement device, including band fast sealing spiral cover（1）, explosion test container tank
Body（2）, the accurate ratio air distributing device of multichannel（3）, gas blender device（4）, oxygen concentration detection device（5）, igniter
（6）, control unit（7）, data acquisition unit（8）, computer radio monitoring system（9）And base（44）, it is characterised in that：Institute
The explosion test container tank stated（2）For 20 liters of spherical stainless steel blasting pot, mouth is opened flat in spheroid upper and lower surface center, is opened
Upper flange is fixed at mouthful respectively（10）With bottom flange（11）, front and rear surfaces center, which is opened flat at mouth, opening, is separately installed with sight
Examine window（16）, mounting flange（17）, left and right center centre of surface position, which is opened flat, to be respectively mounted automatic distributing at mouth, opening and enters
Sample mouthful（19）, sensor mounting flange（20）, upper flange（10）Upper surface be machined with O-ring groove and O-ring be installed, simultaneously
It is fixed with little gear（43）, little gear（43）On have handle, fast sealing spiral cover（1）Center is installed by igniter（6）, two
Individual electrode tip holder（13）Symmetrically it is fixed on fast sealing spiral cover（1）Center both sides, make two electrode tip holders（13）Two interior ignition powers
Pole pin（15）Relative, gap is 3 mm ~ 7.5mm, fast sealing spiral cover（1）With explosion test container tank（2）Upper flange
（10）It is threaded togather, simultaneously, one section of external tooth on the outer circumference face of upper end, with upper flange（10）Little gear（43）Nibble
It is combined, pressure sensor（21）It is fixed on explosion test container tank（2）Sensor mounting flange（20）, and be radially orientated
Igniter（15）Igniting source position, pressure sensor（21）With data acquisition unit（8）Connection, explosion test container tank
（2）Bottom flange（11）It is fixed on base（44）On, gas blender device（4）Axle sleeve（39）It is fixed on bottom flange（11）
It is interior, multichannel precision ratio air distributing device（3）Output interface and explosion test container tank（2）Automatic distributing injection port（19）With
Appendix is connected, oxygen concentration detection device（5）, explosion test container tank（2）Mounting flange（17）Upper installation oxygen concentration detection
Device（5）Input/output interface（26）And oxygen sensor annular seal space（23）, control unit（7）, data acquisition unit（8）It is logical
Data wire connection is crossed, is put down by antenna and computer radio monitoring system（9）Wireless connection.
2. fuel gas limit oxygen concentration parametric measurement device as claimed in claim 1, it is characterised in that：Described multichannel essence
Close ratio air distributing device（3）, including vacuum system, multi-channel parallel gas sampling pipeline, converge pipeline（28）, distribution pressure sensing
Device（29）And output interface（30）, the vavuum pump of vacuum system（31）Magnetic valve is protected with bidirectional vacuum pump（32）Connection, and connect
Enter to converge pipeline（28）Interior, gas sampling pipeline is by a bidirectional protective magnetic valve all the way（34）With a gas flow regulating valve
（33）Compose in series, number road gas sampling pipeline, which is all connected to, converges pipeline（28）, output interface（30）With explosion test container
Tank（2）On automatic distributing injection port（19）Connection, vavuum pump（31）With control system（7）, control correspondence gas sampling pipeline
On bidirectional protective magnetic valve（34）Be turned on and off, pass through distribution pressure sensor（29）Detect explosion test container tank
（2）Interior pressure, you can realize the accurate distribution of multichannel.
3. fuel gas limit oxygen concentration parametric measurement device as claimed in claim 1, it is characterised in that：Described gas is stirred
Mix device device（4）, including blade（35）, internal rotor（36）, seal isolation set（37）, outer rotor（38）, axle sleeve（39）, motor
（40）, wherein internal rotor（36）Upper outside is inlaid with rare earth permanent magnet strong magnets N poles by equal subangle（41）, outer rotor（38）On
Inner side is inlaid with rare earth permanent magnet strong magnets S poles by same angle（42）, outer rotor（38）With motor（40）Axle connection, blade
（35）Warp beam sleeve（39）With internal rotor（36）It is fixed, control system（7）Controlled motor（40）Rotate, drive outer rotor（38）Turn
It is dynamic, attract to drive internal rotor by magnetic force（36）And blade（35）Rotate, realize explosion test container tank（2）Interior gas it is uniform
Mixing.
4. fuel gas limit oxygen concentration parametric measurement device as claimed in claim 1, it is characterised in that：Described oxygen concentration
Detection device（5）, including the oxygen concentration detector with containment vessel（18）, oxygen sensor（22）, oxygen sensor annular seal space
（23）, pipe circle pump（24）, bidirectional vacuum pump protection magnetic valve（32）, input and output pipe（26）, two input and output pipes
（26）One end passes through the stainless steel tube that is welded on flange and explosion test tank body of container（2）Inside connection, the other end connects respectively
Connect two bidirectional vacuum pump protection magnetic valves（32）One end, two bidirectional vacuum pumps protect magnetic valve（32）Another another two of termination
Input and output pipe（26）And difference connecting pipe circulating pump（24）Two ends, are placed in oxygen sensor annular seal space（23）Interior oxygen is passed
Sensor（22）Probe access one of bidirectional vacuum pump protection magnetic valve（32）Other end input and output pipe（26）It is interior, oxygen
Sensor（22）With the oxygen concentration detector with containment vessel（18）Electrical connection, pipe circle pump（24）With control system（7）Electricity
Gas is connected, control system（7）Control pipeline circulating pump（24）, control input efferent duct（26）Folding, when opening, by explosion test
Container tank（2）Interior gas is extracted out, passes through oxygen sensor（22）, the oxygen concentration detector with containment vessel（18）Detection blast is real
Test container tank（2）Interior oxygen concentration, during conjunction, by input and output pipe（26）Interior oxygen returns to explosion test container tank（2）It is interior.
5. fuel gas limit oxygen concentration parametric measurement device as claimed in claim 1, it is characterised in that：Described igniting dress
Put（6）, including electrode tip holder（13）, ignitor（14）, ignitor pin（15）, ignitor（14）Top is provided with electrode needle
（15）, ignitor（14）It is fixed on electrode tip holder（13）It is interior.
6. fuel gas limit oxygen concentration parametric measurement device as claimed in claim 1, it is characterised in that：Described is quick close
Seal spiral cover（1）, have and explosion test tank body of container on its lower end face of cylinder（2）The upper flange at top（10）Internal thread matching sum
External screw thread, fast sealing spiral cover（1）One section of external tooth is machined with the outer circumference of upper end, with being fixed on upper flange（10）Identical molds
Several little gears（43）It is engaged, rotation pinion（43）Upper handle, drives fast sealing spiral cover（1）Rotation, dextrorotation hand
Handle can contained explosion experiment container tank body（2）, rotate counterclockwise can open fast sealing spiral cover（1）, realize quick close
Envelope and dismounting.
7. using the operating method of the fuel gas limit oxygen concentration parametric measurement device described in claim 1,2,3,4,5 or 6,
It is characterized in that：Operating method comprises the following steps,
（One）Oxygen gauge is installed in tank of compressed air first, and the output end of oxygen gauge is passed through into high-pressure rubber pipe and equipment
Input connection, cover and tighten container cover, open manual relief valve, make container inner pressure with after extraneous balance, turning off
Relief valve, opens vacuum-pump power supply；
（Two）When carrying out flammable gas explosion experiment, corresponding sparking mode and igniting are selected according to the species of gas, steam
Energy, is lighted a fire using pulse firing to fuel gas, and testing explosion test container pressure inside the tank using pressure sensor becomes
Change；
（Three）Experimental rig main power source is opened, tank of compressed air main valve is outwarded winding, pressure is adjusted, is more than output pressure
1Mpa, is sampled with air bag, and air bag is connected into sample input port, selects one to six road sample introductions according to sample situation, and open gas
Capsule valve is to enter explosion test container tank after sample is mixed in pipeline；
（Four）Open agitating device and adjust rotating speed, sample gas is quickly mixed, open oxygen concentration instrument input, output end valve
Door, detects oxygen concentration, it is to be mixed it is uniform after, close valve, start explosion test；
（Five）When carry out explosive parameters test experiments when, using wireless synchronous control system simultaneously or delay start igniter,
Detonation propagation process is observed by observation window, test system and test related limit oxygen concentration and explosive parameters are utilized.
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| CN201710443836.2A CN107247126B (en) | 2017-06-13 | 2017-06-13 | Fuel gas limit oxygen concentration parametric measurement device and operating method |
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| CN107247126B CN107247126B (en) | 2018-05-08 |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107957358A (en) * | 2017-12-19 | 2018-04-24 | 南京友智科技有限公司 | A kind of environment-friendly automatic measuring device for monitoring rate pair |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201428799Y (en) * | 2009-05-18 | 2010-03-24 | 重庆中容石化机械制造有限公司 | Safe quick-actuating closures device of pressure vessel |
| CN201475315U (en) * | 2009-08-17 | 2010-05-19 | 上虞大兴锅炉容器有限公司 | Pressure vessel rotary cover quickly opening device |
| CN201487199U (en) * | 2009-08-17 | 2010-05-26 | 上虞大兴锅炉容器有限公司 | Quick-opening device for rotating ring of pressure vessel |
| CN102879416A (en) * | 2012-09-26 | 2013-01-16 | 公安部天津消防研究所 | Experiment device and experiment method for gas cloud combustion, explosion simulation and inerting, inhibition |
| CN203620573U (en) * | 2013-12-31 | 2014-06-04 | 蓬莱禄昊化工机械有限公司 | Magnetic coupling driving agitating device |
| CN105928978A (en) * | 2016-04-20 | 2016-09-07 | 中国石油化工股份有限公司 | Testing apparatus for burning and explosion of combustible gas in narrow, long and restricted space |
| CN106093116A (en) * | 2016-08-26 | 2016-11-09 | 上海应用技术学院 | Combustible gas explosion parameter test device |
-
2017
- 2017-06-13 CN CN201710443836.2A patent/CN107247126B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201428799Y (en) * | 2009-05-18 | 2010-03-24 | 重庆中容石化机械制造有限公司 | Safe quick-actuating closures device of pressure vessel |
| CN201475315U (en) * | 2009-08-17 | 2010-05-19 | 上虞大兴锅炉容器有限公司 | Pressure vessel rotary cover quickly opening device |
| CN201487199U (en) * | 2009-08-17 | 2010-05-26 | 上虞大兴锅炉容器有限公司 | Quick-opening device for rotating ring of pressure vessel |
| CN102879416A (en) * | 2012-09-26 | 2013-01-16 | 公安部天津消防研究所 | Experiment device and experiment method for gas cloud combustion, explosion simulation and inerting, inhibition |
| CN203620573U (en) * | 2013-12-31 | 2014-06-04 | 蓬莱禄昊化工机械有限公司 | Magnetic coupling driving agitating device |
| CN105928978A (en) * | 2016-04-20 | 2016-09-07 | 中国石油化工股份有限公司 | Testing apparatus for burning and explosion of combustible gas in narrow, long and restricted space |
| CN106093116A (en) * | 2016-08-26 | 2016-11-09 | 上海应用技术学院 | Combustible gas explosion parameter test device |
Non-Patent Citations (3)
| Title |
|---|
| ISAAC A. ZLOCHOWER ET AL.: "The limiting oxygen concentration and flammability limits of gases and gas mixtures", 《JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES》 * |
| KENNETH L. CASHDOLLAR: "Flammability of methane，propane, and hydrogen gases", 《 JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES》 * |
| 陆强等: "《安全工程专业实验指导教程》", 31 December 2014 * |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668999A (en) * | 2017-10-17 | 2019-04-23 | 中国石油化工股份有限公司 | The test device of gas-particle two-phase combustible material minimum ignition energy |
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| CN109596803A (en) * | 2018-12-09 | 2019-04-09 | 西安科技大学 | The principal component Multiple Regression Analysis Method of methane explosion minimum oxygen concentration Intrusion Index |
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Address after: 300381 Nankai District Jin Wei South Road, No. 110, Tianjin Co-patentee after: Jilin Hongyuan Science Instrument Co., Ltd. Patentee after: Tianjin Institute of Fire Protection, Ministry of Emergency Management Address before: 300381 Nankai District Jin Wei South Road, No. 110, Tianjin Co-patentee before: Jilin Hongyuan Science Instrument Co., Ltd. Patentee before: Tianjin Fire Fighting Inst., Ministry of Public Security |