CN106404834A - Test method for explosion suppression and fire resistance performance of structured packing - Google Patents
Test method for explosion suppression and fire resistance performance of structured packing Download PDFInfo
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- CN106404834A CN106404834A CN201610748629.3A CN201610748629A CN106404834A CN 106404834 A CN106404834 A CN 106404834A CN 201610748629 A CN201610748629 A CN 201610748629A CN 106404834 A CN106404834 A CN 106404834A
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- 238000012856 packing Methods 0.000 title claims abstract description 27
- 238000004880 explosion Methods 0.000 title claims abstract description 10
- 238000010998 test method Methods 0.000 title claims description 17
- 230000001629 suppression Effects 0.000 title abstract description 4
- 238000012360 testing method Methods 0.000 claims abstract description 160
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 152
- 239000000945 filler Substances 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000007689 inspection Methods 0.000 claims abstract description 4
- 238000012544 monitoring process Methods 0.000 claims description 21
- 238000001514 detection method Methods 0.000 claims description 17
- 241000628997 Flos Species 0.000 claims description 10
- 238000013480 data collection Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 8
- 238000002474 experimental method Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000004083 survival effect Effects 0.000 claims description 3
- 238000005538 encapsulation Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 239000003245 coal Substances 0.000 abstract description 2
- 238000005065 mining Methods 0.000 abstract 1
- 238000012418 validation experiment Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 67
- 230000008859 change Effects 0.000 description 7
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 239000008246 gaseous mixture Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 101100408352 Drosophila melanogaster Plc21C gene Proteins 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000012812 general test Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 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
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/50—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility
- G01N25/54—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility by determining explosibility
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
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- Pathology (AREA)
- Combustion & Propulsion (AREA)
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- Engineering & Computer Science (AREA)
- Examining Or Testing Airtightness (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention provides a method for testing explosion suppression and fire resistance performance of structured packing, belongs to the technical field of testing, and comprises the following steps of: 1) preparing before testing; i. performing an air tightness test; test instrumentation inspection; 2) distributing gas; replacing gas in the test tank with compressed air, and adding methane gas after 30min to make the concentration of methane gas in the test tank 9.5%; 3) and (3) ignition: turning on an ignition switch key to start a fire energy generator; 4) collecting data; 5) the validation experiment was repeated. The invention can simultaneously monitor the gas parameters of each area in the tank body through multiple sections and different heights to obtain more detailed and accurate experimental data, thereby rapidly and accurately mastering the explosion suppression performance of the filler and providing complete guarantee for coal mining.
Description
Technical field
The invention belongs to technical field of measurement and test is and in particular to structured packing datonation-inhibition Fire resistances test method.
Background technology
One of low concentration coal-bed gas direct cryogenic liquefying technology critical process process is to be returned using cryogenic rectification technology
Receive the methane in coal bed gas.In distillation process, in rectifying column, the methane concentration of gas phase composition is from 0.5% consecutive variations of tower top
For the 95% of bottom of towe, in the gas phase in subregion, oxygen content is more than 12% simultaneously, if therefore there being incendiary source to occur, thunderous
Hit, the factor such as electrostatic, there is the danger that blast occurs in rectifying column.
In rectifying column, filling structured packing can effectively be restrained or weaken the generation of blast.In actually used, regular fill out
The physical property of material itself has decisive action to the concrete set-up mode of filler, but how to determine the physical property of filler, anxious
A kind of general test device need to be researched and developed to realize.
Content of the invention
In consideration of it, the present invention provides a kind of structured packing datonation-inhibition Fire resistances test method, can rapidly and accurately determine
The physical property of filler, thus proposing reasonably datonation-inhibition back-fire relief scheme, improves the security in rectifying column.
The purpose of the present invention is realized by such technical scheme：
A kind of datonation-inhibition Fire resistances test method of structured packing, first carries out datonation-inhibition test, then carries out test for flame retardance, including with
Lower step：
1) prepare before testing；
I. hermeticity experiment；After first sequentially loading certain thickness filler toward in test tank, then to injection compression in test tank
Air to 50KPa (G), after 30min, if the compressed air pressure drop in whole system be less than 2KPa then it is assumed that pilot system is close
Envelope property is good；Otherwise, reinflated after carrying out encapsulation process, hunt leak again, until qualified；
Ii. tester inspection；
2) distribution；First with compressed air, line replacement is entered to gas in test tank, after 30min, then allocate methane gas into, and make
Concentration in test tank for the methane gas is 9.5%；
3) light a fire：Open ignition key, start fiery power generator；
4) data acquisition：Arranged by differing heights position on multiple radial sections to test tank for the data collection processor
Sensing methane concentration device, pressure sensor and flame sensor carry out data acquisition and processing (DAP), in conjunction with the number of monitoring system
It is believed that breath, the rupture event of rupture disk, whether comprehensive descision explodes, and determines whether types of burst, filler are effectively datonation-inhibition；
5) repeated authentication test：If blast occurs, off-test；Otherwise need repeated authentication twice.
Further, step 1) depth of packing one initial value is first determined according to the performance of filler material, then along initial
Value one scope of two side draw, the minimum filling thickness of datonation-inhibition test is 400mm；In test for flame retardance, the minimum filling thickness of filler is
500mm.
Further, step 2) also include Concentration Testing process：Detect test tank exhaust ports methane concentration every 5min, even
Continuous analysis three times, three result methane concentration variable quantities no more than 1%, then it is believed that methane mixes；It is otherwise not
Qualified.
Further, this test method is carried out using structured packing datonation-inhibition Fire resistances pilot system, described structured packing suppression
Quick-fried Fire resistances pilot system includes test tank and the air distribution system connecting with described test tank, measuring system, ignition system
And emptying system, described test tank includes the structured packing that tank body and the axial direction along test tank are sequentially filled in tank body,
Described tank body includes the can body of hollow cylindrical and is removably disposed in end socket and the rupture disk at can body two ends respectively, in can body
Multiple radial sections on be provided with igniter interface and gas charge interface simultaneously, described igniter interface be located at section top
Portion, described gas charge interface is located at the bottom in section, is additionally provided with least one pressure sensor interface, extremely in arbitrary section
A few flame sensor interface and at least three concentration sensor interfaces, the concentration sensor interface in same section has difference
Height, can body is provided with floss hole near rupture disk end,
Described air distribution system is filled with air, methane by gas charge interface into test tank, makes gaseous mixture in test tank
The concentration of body and pressure reach test requirements document；
Described measuring system passes through pressure sensor interface, flame sensor interface and concentration sensor interface to each section
The collection of gas explosion each characteristic parameter data in face；
Described ignition system passes through the igniting to methane in test tank and the mixed gas of air for the igniter interface；
Described emptying system excludes survival gas and the mixed gas filling after mixed gas in test tank by floss hole
Concentration sampling Detection,
Also include PLC control system, monitoring system,
Described PLC control system, on air distribution system described in remotely control and described emptying system pipeline valve logical
It is disconnected,
Described monitoring system, the actual conditions for the external environment condition to test tank are monitored, and captured picture passes
Situation in defeated to ground data processing equipment and on the display screen monitoring tank.
Further, described concentration sensor interface arrange altogether three and by etc. angle difference uniformly respectively on radial section.
Further, described angle is 30-60 °.
Further, described air distribution system includes air compressor machine and methane gas cylinder, and described air compressor machine and methane gas cylinder are merged into one
Root house steward, this house steward gas charge orifice with radial section respectively.
Further, described measuring system is included data collection processor and is connected with described data collection processor respectively
Sensing methane concentration device, pressure sensor and flame sensor, described sensing methane concentration device, pressure sensor and flame sensing
Device is separately positioned on pressure sensor interface, flame sensor interface and concentration sensor interface.
Further, described ignition system includes igniter head and the ignition energy generator being connected with igniter head, described igniting
Head is arranged in igniter interface, and extend near tank body longitudinal center line.
Further, described emptying system includes Manual drain valve and the pressure gauge connecting with described floss hole.
The present invention has the advantage that：
The present invention can monitor the gas parameter of regional in tank body by multiple radial sections simultaneously, obtains more detailed
Experimental data, thus rapidly and accurately grasping the datonation-inhibition function of filler, simultaneously as in axially arranged multiple radial sections,
The filler of any different attribute can be tested, extend its test scope, improve versatility, in addition, also by will be dense
Degree sensor interface is arranged on the position of differing heights, obtains more multiextent experimental data, can further improve the standard of data
Really property, thus improve test quality.In a word, the program can rapidly and accurately determine the explosion-proof performance of different fillers, thus convenient
Engineers and technicians formulate reasonably datonation-inhibition back-fire relief scheme, realize improving the security of rectifying column work.
Brief description
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with accompanying drawing the present invention is made into
The detailed description of one step, wherein：
Fig. 1 is the structure chart of the present invention；
Fig. 2 is the longitudinal section view of tank body A-A, B-B and C-C；
Fig. 3 is datonation-inhibition experiment process figure；
Fig. 4 is test for flame retardance flow chart.
Specific embodiment
Below with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail；It should be appreciated that preferred embodiment
Only for the present invention is described, rather than in order to limit the scope of the invention.
As shown in Figure 1, 2, the structured packing of the present invention datonation-inhibition Fire resistances pilot system, including test tank and with described
The air distribution system of test tank 1 connection, measuring system, ignition system and emptying system, described test tank includes tank body and along test
The axial direction of tank is sequentially filled in the structured packing 1 in tank body, and described tank body includes the can body 2 of hollow cylindrical, can body 2
One end is detachably provided with end socket 3, and end socket is flange, is fixed by bolts to can body end, and the other end is provided with rupture disk
4, during explosion, under burst pressure effect, rupture disk 4 ejects release it is ensured that its security, on multiple radial sections of can body
It is provided with igniter interface 5 and gas charge interface 6, described igniter interface 5 is located at the top in section, described gas fills simultaneously
Note interface 6 is located at the bottom in section, is additionally provided with least one pressure sensor interface 7, at least one flame in arbitrary section
Sensor interface 8 and at least three concentration sensor interfaces 9, angularly poor 30-60 ° of the concentration sensor interface 9 in same section
To realize different height, the concentration value that can obtain gas at differing heights increases the reliability of experimental data to equidistant arrangement,
Can body is provided with floss hole 10 near rupture disk end,
Described air distribution system is filled with air, methane by gas charge interface into test tank, makes gaseous mixture in test tank
The concentration of body and pressure reach test requirements document；
Described measuring system passes through pressure sensor interface, flame sensor interface and concentration sensor interface to each section
The collection of gas explosion each characteristic parameter data in face；
Described ignition system passes through the igniting to methane in test tank and the mixed gas of air for the igniter interface；
Described emptying system excludes survival gas and the mixed gas filling after mixed gas in test tank by floss hole
Concentration sampling Detection,
Also include PLC control system, monitoring system,
Described PLC control system, on air distribution system described in remotely control and described emptying system pipeline valve logical
It is disconnected,
Described monitoring system, the actual conditions for the external environment condition to test tank are monitored, and captured picture passes
Situation in defeated to ground data processing equipment and on the display screen monitoring tank.
Specifically, the present embodiment is provided with tri- sections of A-A, B-B, C-C on can body, and each section arranges an igniting altogether
8, three concentration of 5, gas charge interface of device interface, 7, flame sensor interface of 6, pressure sensor interface pass
Sensor interface 9, sets up rectangular coordinate system in terms of rupture disk end, and described igniter interface is intersected with can body positioned at positive Y-axis respectively
On outer wall, described gas charge interface is located on the outer wall that negative Y-axis is intersected with can body respectively, described pressure sensor interface setting
In positive X-axis on former 150 ° of outer walls intersecting with can body of heart rotate counterclockwise, described flame sensor interface be arranged on positive X-axis around
On 120 ° of outer walls intersecting with can body of can body center rotate counterclockwise, described three concentration sensor interfaces are separately positioned on negative Y
Axle on 45 ° of can body center rotate counterclockwise, 90 °, 135 ° of outer walls intersecting with can body,
In the present embodiment, described air distribution system includes air compressor machine 13 and methane gas cylinder 11, described air compressor machine 10 and methane gas
Bottle 11 is merged into a house steward, this house steward gas charge orifice with radial section respectively.
In the present embodiment, described measuring system include data collection processor 12 and respectively with described data collection processor
The sensing methane concentration device 13 of 12 connections, pressure sensor 14 and flame sensor 15, described pressure sensor 14, flame sensing
Device 15 and sensing methane concentration device 13 are separately positioned on pressure sensor interface, flame sensor interface and concentration sensor interface
Place.
In the present embodiment, described ignition system includes igniter head 17 and the ignition energy generator 18 being connected with igniter head,
Described igniter head is arranged in igniter interface, and extend near tank body longitudinal center line.
In the present embodiment, described emptying system includes the Manual drain valve 19 connecting with described floss hole and pressure gauge 20,
Outlet pressure is monitored by pressure gauge, if too high, open Manual drain valve 19 and be depressured, improve the security of system.
In the present embodiment, described PLC control system includes PLC 21 and multiple with what described PLC connected
Magnetic valve 22, magnetic valve 22 is separately positioned on methane gas cylinder exit, air compressor machine exit, section A-A, the upper gas of B-B, C-C
In the connecting tube of filling interface, in discharge manifold and on the export pipeline of remote control floss hole, real under the control of PLC control system
Existing automated intelligent controls.
In the present embodiment, described monitoring system includes camera and the video display 23 being connected with camera, camera
It is arranged on (not shown) in tank body tunnel, the Parameters variation of monitor in real time gas, and result is shown by video display.
The method tested using above-mentioned pilot system：
The experiment of this system includes datonation-inhibition test and test for flame retardance, fills because the igniter of datonation-inhibition test is located at filler
Area, the filled encirclement of whole igniter, even if occurring firing after its igniting, its acceleration distance and scope are also very limited.And hinder
In fire test, igniter is located at ignites pipe end, and ignition pipeline section has in the space of 0.8m does not install any filler, its
There is certain space firing acceleration after igniting, thus fire the relatively datonation-inhibition test of power and can become big, therefore should first carry out datonation-inhibition
Test, then carry out test for flame retardance.
First, datonation-inhibition test, as shown in figure 3, comprise the following steps：
(1) prepare before testing
Before being tested, each testing equipment is carried out routine examination, including air-tightness, can experimental test instrument just
Often work, adjusting of gas detector check, and whether test tank ground connection is good.
1. experimental rig hermeticity experiment
Close the power supply of non-explosion-proof electrical appliance in tunnel.Load and fix filler, load onto test tank flange and rupture disk.Connect
Pipeline data gathering line on logical test tank body, confirms that errorless rear all personnel withdraws from tunnel.By air compressor machine to test tank
Injecting compressed air, to 50KPa (G), closes compressed air inlet valve, makes the compression full of 50KPa (G) in whole pilot system
Air.Pressure gauge on viewing test pipeline, after 30min, if the compressed air pressure drop in whole system is less than 2KPa, can recognize
Good for pilot system sealing.If leakage situation occurs, hunted leak with soap lather liquid, and leak is carried out at sealing
Reason.Repetitive leakage detection, until qualified.
Depth of packing first determines an initial value according to the performance of filler material, then along initial value one model of two side draw
Enclose, e.g., first determine that initial value is 800mm, both sides respectively take 400mm, then its depth of packing is 400～1200mm, nevertheless,
The minimum filling thickness of datonation-inhibition test can not be less than 400mm；In test for flame retardance, the minimum filling thickness of filler can not be less than 500mm.
2. checkout facility tester
Start video monitoring system.Open test system, test each test apparatus whether normal work.Check examination
Whether good test tank ground connection, ignition switch is off, and is pinned with key, make ignition switch keep electric physics to break
Open.
After inspection before completing to test, determine that all kinds of testing equipments are working properly, you can think and meet experimental condition, under
One step carries out testing front warning.Before being tested, first at access adit 30m, warning elt is tested in setting, sets up warning
Board, and test warning personnel are set.At the exhaust outlet of tunnel, equally warning elt is set, and sets up warning sign.Warning personnel are led to
Cross intercom to be linked up with field test personnel in time.
(2) datonation-inhibition test procedure
1. distribution：Connect compressor and air inlet duct, open into, air bleeding valve, start air compressor.Empty using compression
Gas enters line replacement to test tank.After displacement 30 minutes, close the terminal valve of substitution gas, in test tank for cleaning often now
Pressure air.It is then turn on methane gas cylinder and gas-distribution pipe.Open methane gas distribution valve, observe pressure gauge reading simultaneously, fixed by partial pressure
Rule can be learnt：When pressure gauge reading is for 10.5KPa, the methane concentration in test tank is about 9.5%.Now close methane air inlet
Valve, standing allows methane and air be sufficiently mixed for 30 minutes.
2. detect：Then outside tunnel, test tank exhaust ports analyzed the true of methane every 5 minutes with methane analyser
Concentration.Continuously analysis three times, if the variable quantity recording result methane content for three times is all not more than 1%, then it is considered that first
Alkane gas is by evenly mixing.If methane content variable quantity is more than 1%, then stands 30 minutes, then detect until methane change
Amount meets test requirements document.If methane content is detected to be less than 8.5%, then be just passed through a small amount of methane, then as stated above again
Detection is until meeting experimental condition；If methane content is more than 10.5%, then be just passed through a small amount of air, then as stated above
Detect again until meeting experimental condition.After on-test, testing crew is forbidden to enter tunnel (if tunnel need to be entered it is necessary to warp is when value
Test director allows, and enters tunnel and must not be less than 2 people, and carries and uniquely can open the key of ignition switch and portable
Methane detection instrument).
3. light a fire：After distribution detection is qualified, close the valve of site pressure table, air distribution system and gas detector,
And air distribution system (methane gas cylinder, air compressor) is removed at the air distribution port total valve of gas conduit end, by methane gas cylinder
Move away from roadway entry.Viewing test monitoring system, video monitoring system, again ensure that everywhere no after potential safety hazard, report examination
Test tissue director, request test is lighted a fire.After the agreement obtaining director, igniting personnel connect ignition switch circuit, open a little
Fire switch key, starts fiery power generator.
4. data acquisition：After being worth test director finally confirmation each side safety again, connected by when value test director
The ignition energy generator at insertion filler center, and remotely light a fire.The data (P, dP/dt) of observation fire pressure acquisition system and
Video monitoring, records test data in time.The rupture event of the ascendant trend according to pressure curve and rupture disk judges whether
Occur blast and types of burst (firing or detonation) and filler whether effectively datonation-inhibition.
5. repeated authentication test：If finding not exploding in pressure testing tank by sensor and video monitoring after igniting
Phenomenon, then also need to repeated authentication twice.
When carrying out repeating test every time, it is both needed to open dash blower fan so as to normally run 20min, makes gas in tunnel
Body carries out forcing to exchange it is ensured that methane gas is in level of security in tunnel.
Its step is as follows：Disconnect ignition switch and various holding wire power supply first, open inlet and outlet valve, connect compressor
With admission line, then start compressor and replace the gas that test tank is contained within methane, detect the content of exhaust outlet methane, until
When methane content is less than 1%, can stop replacing.Finally repeat distribution above, detection, igniting data acquisition step.If
Three igniting are all exploded, then it is considered that the filler configuration under this experimental condition is to play explosion-resistant effect
's.Note：This step process operating personnel must not enter in tunnel.
6. change filler：Two kinds of situations are had when changing filler：One is to have finished if repeating test, and rupture disk is also complete
Good, it is full of methane blended gas in tank；Two be if last time test an explosion occurred, rupture disk ruptured it is impossible to analyze
Instrument analysis the inside gas.Change filler step as follows：First, if situation one, disconnect ignition switch and various power line, open
Test tank inlet and outlet valve profit, enters line replacement with compressor to gas in tank, detects methane content with analyzer, first in tank
Alkane content is less than 0.1%.If situation two, disconnect ignition switch and various power line, open test tank intake valve, connect compression
Machine and admission line, start gas in compressor displacement test tank, open tunnel ventilating fan simultaneously.After 1 hour, obtaining test
In the case of live director, the test operation personnel of more than two bring portable methane detection instrument entrance tunnel to carry out filler
Replacement operation.Whether detection test tank has damage situation, checks sensor connects whether there is exception, and pipeline connects whether there is pine
Dynamic, ready for test next time.
2nd, test for flame retardance, as shown in figure 4, comprise the following steps：
(1) prepare before testing
In test for flame retardance, igniter is placed in the flame acceleration section front end of test tank, additionally, needing on test tank to install
Flame sensor.
(2) test for flame retardance step
1. distribution：Connect compressor and air inlet duct, open into, air bleeding valve, start air compressor.Empty using compression
Gas enters line replacement to test tank.After displacement 30 minutes, close the terminal valve of substitution gas, in test tank for cleaning often now
Pressure air.It is then turn on methane gas cylinder and gas-distribution pipe.Open methane gas distribution valve, observe pressure gauge reading simultaneously, fixed by partial pressure
Rule can be learnt：When pressure gauge reading is for 10.5KPa, the methane concentration in test tank is about 9.5%.Now close methane air inlet
Valve, standing allows methane and air be sufficiently mixed for 30 minutes.
2. detect：Then outside tunnel, test tank exhaust ports analyzed the true of methane every 5 minutes with methane analyser
Concentration.Continuously analysis three times, if the variable quantity recording result methane content for three times is all not more than 1%, then it is considered that first
Alkane gas is by evenly mixing.If methane content variable quantity is more than 1%, then stands 30 minutes again, then detects until methane
Variable quantity meets test requirements document.If methane content is detected to be less than 8.5%, then be just passed through a small amount of methane, then press above-mentioned side
Method detects until meeting experimental condition again；If methane content is more than 10.5%, then be just passed through a small amount of air, then press above-mentioned
Method detects until meeting experimental condition again.After on-test, testing crew is forbidden to enter tunnel (if tunnel need to be entered it is necessary to warp
When value test director allows, and enter tunnel and must not be less than 2 people, and carry the key that uniquely can open ignition switch and just
Take formula methane detection instrument).
3. light a fire：After distribution detection is qualified, close the valve of site pressure table, air distribution system and gas detector,
And air distribution system (steel cylinder, air compressor) is removed at the air distribution port total valve of gas conduit end, methane gas cylinder is moved away from
At roadway entry.Viewing test monitoring system, video monitoring system, again ensure that everywhere no after potential safety hazard, report test group
Knit director, request test is lighted a fire.After the agreement obtaining director, igniting personnel connect ignition switch circuit, open igniting and open
Close key, start fiery power generator.
4. data acquisition：After being worth test director finally confirmation each side safety again, connected by when value test director
The ignition energy generator at insertion filler center, and remotely light a fire.The data (P, dP/dt) of observation fire pressure acquisition system,
Flame acquisition system and video monitoring, record test data in time.Read according to the ascendant trend of pressure curve, flame acquisition system
Number and video monitoring judge whether this testing fill configuration has back-fire relief function.
5. repeated authentication test：If filler energy back-fire relief is found by flame acquisition system, then also need to repeated authentication two
Secondary.Because spark plug is in the igniting of empty cylinder section, no matter so filler whether back-fire relief, all can explode, rupture disk be certain to by
Destroy.
When carrying out repeating test every time, it is both needed to open dash blower fan so as to normally run 20min, makes gas in tunnel
Body carries out forcing to exchange it is ensured that methane gas is in level of security in tunnel.
Repeat test suddenly as follows：Disconnect ignition switch and various holding wire power supply first, open intake valve, connect compressor
With admission line, then start compressor and replace the gas that test tank is contained within methane, open tunnel ventilating fan simultaneously.1 hour
Afterwards, in the case of obtaining testing ground director, the test operation personnel of more than two bring portable methane detection instrument to enter
Enter tunnel and carry out rupture disk replacement operation.Whether detection test tank has damage situation, checks sensor connects whether there is exception, pipe
It is loosening whether road connection has, ready for test next time.Finally repeat distribution above, detection, igniting data collection step
Suddenly.If three times igniting charge can realize back-fire relief, then it is considered that the filler configuration under this experimental condition is to play
Back-fire relief effect.
6. change filler：After last time tests last night, when needing to change filler, disconnect ignition switch and various power supply first
Line, opens test tank intake valve, connects compressor and admission line, then starts gas in compressor displacement test tank, simultaneously
Open tunnel ventilating fan.After 1 hour, in the case of obtaining testing ground director, the test operation personnel of more than two carry
Upper portable methane detection instrument enters tunnel and carries out replacement operation.Whether detection test tank has damage situation, checks sensing
Whether device connects exception, and it is loosening whether pipeline connection has, ready for test next time.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention it is clear that those skilled in the art
Member the present invention can be carried out various change and modification without departing from the spirit and scope of the present invention.So, if the present invention
These modifications and modification belong within the scope of the claims in the present invention and its equivalent technologies, then the present invention is also intended to comprise these
Including change and modification.
Claims (10)
1. a kind of datonation-inhibition Fire resistances test method of structured packing it is characterised in that：First carry out datonation-inhibition test, then carry out back-fire relief examination
Test, comprise the following steps：
1) prepare before testing；
I. hermeticity experiment；After first sequentially loading certain thickness filler toward in test tank, then to injecting compressed air in test tank
To 50KPa (G), after 30min, if the compressed air pressure drop in whole system is less than 2KPa then it is assumed that pilot system sealing
Well；Otherwise, reinflated after carrying out encapsulation process, hunt leak again, until qualified；
Ii. tester inspection；
2) distribution；First with compressed air, line replacement is entered to gas in test tank, after 30min, then allocate methane gas into, and make methane
Concentration in test tank for the gas is 9.5%；
3) light a fire：Open ignition key, start fiery power generator；
4) data acquisition：First by differing heights position setting on multiple radial sections to test tank for the data collection processor
Alkane concentration sensor, pressure sensor and flame sensor carry out data acquisition and processing (DAP), in conjunction with monitoring system data letter
Breath, the rupture event of rupture disk, whether comprehensive descision explodes, and determines whether types of burst, filler are effectively datonation-inhibition；
5) repeated authentication test：If blast occurs, off-test；Otherwise need repeated authentication twice.
2. the datonation-inhibition Fire resistances test method of structured packing according to claim 1 it is characterised in that：Step 1) filler
Thickness first determines an initial value according to the performance of filler material, and then along initial value one scope of two side draw, datonation-inhibition test is
Low filling thickness is 400mm；In test for flame retardance, the minimum filling thickness of filler is 500mm.
3. the datonation-inhibition Fire resistances test method of structured packing according to claim 1 it is characterised in that：Step 2) also include
Concentration Testing process：Detect test tank exhaust ports methane concentration every 5min, continuously analysis three times, three result methane concentrations
Variable quantity no more than 1%, then it is believed that methane mixes；It is otherwise unqualified.
4. the datonation-inhibition Fire resistances test method of structured packing according to claim 1 it is characterised in that：This test method profit
Carried out with structured packing datonation-inhibition Fire resistances pilot system, the datonation-inhibition Fire resistances pilot system of described structured packing includes test tank
And air distribution system, measuring system, ignition system and the emptying system connecting with described test tank, described test tank includes tank body
Sequentially be filled in the structured packing in tank body with the axial direction along test tank, described tank body include hollow cylindrical can body and
It is removably disposed in end socket and the rupture disk at can body two ends respectively, igniting is provided with multiple radial sections of can body simultaneously
Device interface and gas charge interface, described igniter interface is located at the top in section, and described gas charge interface is located at section
Bottom, is additionally provided with least one pressure sensor interface, at least one flame sensor interface and at least three in arbitrary section
Individual concentration sensor interface, the concentration sensor interface in same section has different height, and can body is arranged near rupture disk end
There is floss hole,
Described air distribution system is filled with air, methane by gas charge interface into test tank, makes mixed gas in test tank
Concentration and pressure reach test requirements document；
Described measuring system passes through pressure sensor interface, flame sensor interface and concentration sensor interface to each section
The collection of gas explosion each characteristic parameter data；
Described ignition system passes through the igniting to methane in test tank and the mixed gas of air for the igniter interface；
Described emptying system by floss hole exclude test tank in survival gas and filling mixed gas after mixed gas dense
The sampling Detection of degree,
Also include PLC control system, monitoring system,
Described PLC control system, for the break-make of valve on air distribution system described in remotely control and described emptying system pipeline,
Described monitoring system, the actual conditions for the external environment condition to test tank are monitored, and captured picture transmission arrives
Situation in ground data processing equipment on the display screen monitoring tank.
5. the datonation-inhibition Fire resistances test method of structured packing according to claim 4 it is characterised in that：Described concentration sensing
Device interface arrange altogether three and by etc. angle difference uniformly respectively on radial section.
6. the datonation-inhibition Fire resistances test method of structured packing according to claim 4 it is characterised in that：Described angle is
30-60°.
7. the datonation-inhibition Fire resistances test method of structured packing according to claim 4 it is characterised in that：Described air distribution system
Including air compressor machine and methane gas cylinder, described air compressor machine and methane gas cylinder are merged into a house steward, this house steward respectively with radial section
Gas charge orifice.
8. the datonation-inhibition Fire resistances test method of structured packing according to claim 4 it is characterised in that：Described measuring system
Including data collection processor and the sensing methane concentration device connecting with described data collection processor respectively, pressure sensor and
Flame sensor, described sensing methane concentration device, pressure sensor and flame sensor be separately positioned on pressure sensor interface,
Flame sensor interface and concentration sensor interface.
9. the datonation-inhibition Fire resistances test method of structured packing according to claim 4 it is characterised in that：Described ignition system
The ignition energy generator be connected including igniter head and with igniter head, described igniter head is arranged in igniter interface, and stretches into
To near tank body longitudinal center line.
10. low temperature gas explosion characteristic test system according to claim 4 it is characterised in that：Described emptying system bag
Include the Manual drain valve connecting with described floss hole and pressure gauge.
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| CN109283222A (en) * | 2018-11-27 | 2019-01-29 | 北京石油化工学院 | Metal material inhibits the method and experimental provision of flammable explosive gas explosion |
| CN109506968A (en) * | 2018-11-26 | 2019-03-22 | 天地（常州）自动化股份有限公司 | Underground coal mine beam tube negative pressure ventilation back-fire relief test device and test method |
| CN112572846A (en) * | 2020-11-23 | 2021-03-30 | 蓝箭航天技术有限公司 | Ignition device test method and system |
| CN112763540A (en) * | 2020-12-30 | 2021-05-07 | 上海仪器仪表自控系统检验测试所有限公司 | Flame-proof test system and test method |
| CN115060565A (en) * | 2022-08-16 | 2022-09-16 | 昆明理工大学 | Detection equipment and method for pre-splitting blasting model test |
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