CN207318397U - High pressure hydrogen pipeline shock wave and electrostatic coupling measuring system - Google Patents
High pressure hydrogen pipeline shock wave and electrostatic coupling measuring system Download PDFInfo
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- CN207318397U CN207318397U CN201721043232.0U CN201721043232U CN207318397U CN 207318397 U CN207318397 U CN 207318397U CN 201721043232 U CN201721043232 U CN 201721043232U CN 207318397 U CN207318397 U CN 207318397U
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 48
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 48
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 230000035939 shock Effects 0.000 title claims abstract description 28
- 230000008878 coupling Effects 0.000 title claims abstract description 16
- 238000010168 coupling process Methods 0.000 title claims abstract description 16
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 16
- 238000010926 purge Methods 0.000 claims abstract description 13
- 230000006698 induction Effects 0.000 claims abstract description 12
- 238000003491 array Methods 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 29
- 230000003068 static effect Effects 0.000 claims description 15
- 239000000523 sample Substances 0.000 claims description 14
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 12
- 230000001808 coupling effect Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000013618 particulate matter Substances 0.000 description 14
- 150000002431 hydrogen Chemical class 0.000 description 12
- 238000011160 research Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 230000007246 mechanism Effects 0.000 description 8
- 238000009792 diffusion process Methods 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 5
- 230000002269 spontaneous effect Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000005680 Thomson effect Effects 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 235000008708 Morus alba Nutrition 0.000 description 1
- 240000000249 Morus alba Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000003331 infrared imaging Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000013528 metallic particle Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model discloses high pressure hydrogen pipeline shock wave and electrostatic coupling measuring system, including hydrogen-storing device, nitrogen purging device, release device, electrostatic induction device, array of pressure sensors, photosensor arrays, electrostatic sensor array, signal pickup assembly and computer, hydrogen-storing device and nitrogen purging device are connected by the front end of admission line and surge tank respectively, the end of surge tank is equipped with emptying device and release device, the array of pressure sensors and photosensor arrays of the electrostatic sensor array being connected with electrostatic detection platform and signal pickup assembly connection are respectively equipped with release pipeline, electrostatic detection platform and it is connected with signal pickup assembly with computer, filming apparatus carries out high speed infrared shooting.The beneficial effects of the utility model are：The coupling effect under two kinds of factor varying levels can be studied at the same time in set of device；Experimental result is accurate, improves conventional efficient, and observation process is more complete.
Description
Technical field
The utility model is related to the mechanism technical field of measurement and test of hydrogen self-ignition, more particularly to high pressure hydrogen pipeline shock wave with it is quiet
It is electrically coupled measuring system.
Background technology
As clean energy resource, its use scope constantly expands hydrogen, but since hydrogen explosion limit section itself is wide, it is minimum
Ignition energy is low, therefore once leakage out of control easily causes fire explosion.Different from other fuel gas, high pressure hydrogen leakage
Easily spontaneous combustion afterwards, the mechanism for leaking spontaneous combustion for high pressure hydrogen at present are limited primarily to inverse joule thomson effect, electrostatic igniting reason
By, ignition theory and other ignition theories are spread, wherein diffusion ignition theory research is the most extensive, it is big with Chinese science technology
Learn and substantial amounts of experimental study has been carried out to diffusion ignition theory for the domestic and international scientific research institution of correlation of representative, analyze different shock waves
Diffusion ignition theory meets situation under intensity and different release environment, it was demonstrated that the feasibility of diffusion ignition theory.With U.S. mulberry
Also there are electrostatic ignition mechanism in Di Ya National Laboratories substantial amounts of experiment and theoretical research for the related scientific research mechanism of representative, to hydrogen
Electro-static Driven Comb process is studied caused by different impurities in feed channel, and what related experiment also demonstrate that electrostatic ignition theory can
Row.But in the experimental study of diffusion ignition theory and electrostatic ignition theory, all there are some, each single theory can not solve
The experimental phenomena released, i.e., in the case where being unsatisfactory for the autoignition conditions of respective theoretical prediction, still there occurs spontaneous combustion for hydrogen.Passing through theory
There may be the effect to intercouple between the different mechanism of analysis post analysis discovery, because shock wave, electrostatic, inverse Joule Thompson
During the factor such as effect and instantaneous adiabatic compression is present in hydrogen gas leakage at the same time, wherein the effect against joule thomson effect
It is present in any one hydrogen gas leakage diffusion process, but its temperature rising brought is not enough to trigger hydrogen self-ignition, wink
When adiabatic compression also only occur that shock wave and electrostatic are the masters for causing hydrogen self-ignition in most cases in the case of small part
Energy source is wanted, only shock wave or electrostatic one of which factor are studied in current research, still can completely does not disclose
The mechanism of hydrogen self-ignition, it is therefore desirable to which a synthesis experiment platform, can couple the principal elements such as shock wave and electrostatic and carry out at the same time
Research, so as to comprehensively observe the spontaneous combustion process of hydrogen in the case of total factor.But current all kinds of experimental provisions are only capable of realizing
The test of single factors varying level, it is difficult to carry out the coupling experiment of a variety of mechanism.The utility model major function is permissible
The shock wave and electrostatic produced during hydrogen gas leakage is measured at the same time, the coupling effect of shock wave and electrostatic can be observed, so that point
The coupling mechanism and its influence factor of analysis research diffusion ignition theory and electrostatic ignition theory.
Utility model content
For above-mentioned problem, the utility model, which aims to provide one kind, can examine high pressure hydrogen to swash during releasing
The experimental provision of ripple and electrostatic coupling action effect, can measure the effect effect of shock wave and electrostatic to hydrogen self-ignition process at the same time
Fruit, realizes the quantitative analysis that result is influenced on multifactor varying level..
To achieve these goals, technical solution is as follows used by the utility model：
High pressure hydrogen pipeline shock wave and electrostatic coupling measuring system and method, including hydrogen-storing device, nitrogen purging device, release
Put device, electrostatic induction device, array of pressure sensors, photosensor arrays, electrostatic sensor array, signal pickup assembly
And computer, the hydrogen-storing device and the nitrogen purging device pass through the front end of its corresponding admission line and surge tank respectively
Connecting, air intake valve is respectively equipped with the air inlet pipe, the end of the surge tank is equipped with emptying device and the release device,
The electrostatic sensor array being connected with electrostatic detection platform and the signal acquisition are respectively equipped with the release device
The array of pressure sensors and photosensor arrays of device connection, the end of the release device is lured equipped with the electrostatic
Lead device and filming apparatus, the filming apparatus, the signal pickup assembly and the electrostatic monitoring platform with the calculating
Machine connects.
Further improve, the release device include trapezoid platform release device, pipe main body, upstream release device and under
Release device is swum, the pipe main body includes upstream release pipe, downstream release pipe and the nozzle set gradually, the upstream release
Pipe end discharges pipe with the downstream by the upstream release device and is connected, and the downstream release pipe end passes through the downstream
Release device is connected with the nozzle, is equipped with the trapezoid platform release device in the upstream release pipe successively and positioned at its end
The release switch at end.
Further improve, the release switch is rupture disk clamper or pneumatic ball valve.
Further improve, No. 1 electrostatic that the electrostatic sensor array includes setting gradually along the pipe main body senses
Device, No. 2 electrostatic transducers, No. 3 electrostatic transducers and No. 4 sensors, No. 1 sensor is located in the pipe main body and position
In the end of the upstream release device, No. 2 electrostatic transducers and No. 3 electrostatic transducers are respectively positioned on the pipeline master
In vivo and the both ends of the downstream release device are respectively provided at, the nozzle end is equipped with No. 4 electrostatic transducers.
Further improve, the photosensor arrays include 3 photoelectric sensings being sequentially arranged on pipe main body outer wall
Device, the array of pressure sensors include be sequentially arranged at it is on the pipe main body outer wall and respectively with 3 photoelectric sensors pair
The humidity sensor answered, temperature sensor and pressure sensor, are equipped with threeway conduit, the humidity sensor below the surge tank
Device, the temperature sensor, the pressure sensor and 3 photoelectric sensors pass through conducting wire and signal pickup assembly respectively
And threeway conduit connection.
Further improve, the electrostatic induction device includes static board, electrostatic probe, dielectric holder and supporting rod, electrostatic
Plate is located at the electrostatic sensor array end, and the static board is connected by the dielectric holder and the supporting rod below
Connect, the end of the static board is equipped with the electrostatic probe, the electrostatic probe ground connection.
Using above-mentioned measuring system, it surveys the shock wave and electrostatic coupling action effect that are produced during hydrogen leak
The step of amount is:
1) according to test purpose, upstream measured particulate matter is added in release device or downstream release device；
2）After completing particulate matter addition, each device is connected into test system, then the system assembled is carried out airtight
Property test, confirm air-tightness it is good；
3）Air in nitrogen purging device discharge surge tank is opened, hydrogen-storing device is then turned on and high pressure is injected into surge tank
Hydrogen, starts release switch, hydrogen drives particulate matter to be rushed along pipe main body through electrostatic sensor array after reaching specified pressure
Hit electrostatic induction device and produce spark discharge, electrostatic sensor array and array of pressure sensors by the data monitored difference
Computer is reached by electrostatic detection platform and signal pickup assembly, the pipe outward ignition situation that filming apparatus will be observed that reaches meter
Calculation machine；
4）Stop supply hydrogen, open nitrogen purging device and extinguish jet flame, and cool down the measuring system.
The beneficial effects of the utility model are：1. the shock wave and the electrostatic coupling experiment that establish high pressure hydrogen pipeline first are flat
Platform, can be measured at the same time in once testing shock wave during high pressure hydrogen is released produce, the product of transmittance process and electrostatic
Tired, release process, it is not necessary to change device or repeatedly measure, fundamentally ensure that the accuracy of experiment, improve reality
Test efficiency；2. pass through electrostatic sensor array, the outer electrostatic transducer of pipe, the knot for inducing electrostatic electrification device and grounded probe in pipe
Close, particulate matter can be understood in the process with generation, accumulation and the release of electrostatic in gas flow with complete display,
Discharge energy when earlier device is only capable of the exterior static release of measurement pipeline is compared, observation process is more complete；
3. by different type release switch and discharging pressure, the shock wave of varying strength can be produced；Pass through different
Grain thing point of addition and additive amount, can produce the electrostatic of varying strength.And then changed by studying two kinds of the quantitative of factor
The generation frequency of hydrogen self-ignition in journey, can analyze influence degree of the different factors to hydrogen self-ignition, and then can be by right
Than the coupling effect of two kinds of factors of analysis of experimental results of single factors.
Brief description of the drawings
Fig. 1 is the utility model structure diagram.
Fig. 2 is trapezoid platform release device structure diagram.
Fig. 3 is nozzle section structure diagram.
Wherein：1- hydrogen-storing devices, 11- admission lines, 12- air intake valves, 2- nitrogen purging devices, 3- release devices, 31-
Trapezoid platform release device, 311- particulate matters, 32- pipe main bodies, 321- upstreams release pipe, 322- downstreams release pipe, 323- sprays
Mouth, 33- upstreams release device, 34- downstreams release device, 35- release switches, 351- rupture disks, 4- electrostatic induction devices, 41-
Static board, 42- electrostatic probes, 43- dielectric holders, 44- supporting rods, 5- array of pressure sensors, 51- humidity sensors, 52- temperature
Spend sensor, 53- pressure sensors, 6- electrostatic sensor arrays, 61-1 electrostatic transducers, 62-2 electrostatic transducers, 63-
No. 3 electrostatic transducers, 64-4 sensors, 7- signal pickup assemblies, 8- surge tanks, 81- threeway conduits, 82- photoelectric sensors
Array, 9- emptying devices, 10- filming apparatus, 101- high-speed cameras, 102- infrared photography devices.
Embodiment
In order to make those of ordinary skill in the art be better understood on the technical solution of the utility model, with reference to attached
Figure and embodiment are further described the technical solution of the utility model.
High pressure hydrogen pipeline shock wave shown in 1 and electrostatic coupling measuring system referring to the drawings, including hydrogen-storing device 1, nitrogen
Blow device 2, release device 3, electrostatic induction device 4, array of pressure sensors 5, electrostatic sensor array 6, signal acquisition dress
Put 7, photosensor arrays 82, electrostatic detection platform, filming apparatus 10 and computer, the hydrogen-storing device 1 and the nitrogen
Blow device 2 is connected to the front end of surge tank 8 by its corresponding admission line 11 respectively, and the air inlet pipe 11 is equipped with control
The air intake valve 12 that air inlet pipe is turned on and off, the end of the surge tank 8 are equipped with emptying device 9 and the release device 3, institute
Stating release device 3 includes trapezoid platform release device 31, pipe main body 32, upstream release device 33 and downstream release device 34,
The pipe main body 32 includes upstream release pipe 321, downstream release pipe 322 and the nozzle 323 set gradually, the upstream release
The end of pipe 321 discharges pipe 322 with the downstream by the upstream release device 33 and is connected, the downstream release pipe 322
End is connected by the downstream release device 34 with the nozzle 323, and the spray nozzle front end opening is big, its diameter AB is
0.15m, its distal opening is small, and diameter CD is 0.032m, for controlling jet-impingement form；In upstream release pipe 321 according to
It is secondary to be equipped with the trapezoid platform release device 31 and the release switch 35 positioned at its end.
The nitrogen purging device is business nitrogen cylinder, and storage pressure 12.5MPa, the hydrogen-storing device is hydrogen steel
Bottle, the admission line and surge tank form by 304 stainless steels, its maximum working pressure (MWP) is 14MPa, length in hydrogen container
0.25m, tank interior diameter 0.12m, the admission line length being connected with hydrogen gas cylinder are 1.5m, internal diameter 0.15m, admission line and tank
Body wall thickness is 0.015m, and blow-down pipe is by ball valve opened manually and closing, the gases at high pressure when bleeder breaks down
It can be discharged into by blow-down pipe in external environment；The release switch is rupture disk clamper or pneumatic ball valve, in research difference
Operating mode when, different release switches is docked in downstream respectively；The length of release pipeline can be 0.36m or 1.2m or 3.05m, upstream
Release device and downstream release device are respectively the connecting pipe of threeway shape, its length is 0.04m, internal diameter 0.015m,
Its T-shaped projection can be as the place to place of addition particulate matter, while release device also serves as the one of connection upstream and downstream pipeline
A fixing device, when studying different operating modes, places particulate matter 311 in upstream release device or downstream release device.
The photosensor arrays 82 include 3 photoelectric sensors being sequentially arranged on pipe main body outer wall, the pressure
Force sensor array 5 includes the humidity being sequentially arranged on 32 outer wall of pipe main body corresponding with 3 photoelectric sensors respectively and passes
Sensor 51, temperature sensor 52 and pressure sensor 53, the lower section of the surge tank 8 are equipped with the threeway conduit 81 communicated therewith,
The humidity sensor 51, the temperature sensor 52, the both ends point of the pressure sensor 53 and 3 photoelectric sensors
It is not connected by conducting wire with signal pickup assembly 7 and threeway conduit 10, to record the state change of gas in pipe constantly.
The electrostatic sensor array 6 includes cricoid No. 1 electrostatic transducer set gradually along the pipe main body 32
61st, 62, No. 3 electrostatic transducers 63 of No. 2 electrostatic transducers and No. 4 sensors 64, are installed at the 0.01m of upstream release device downstream
There is No. 1 electrostatic transducer 61,62 He of No. 2 electrostatic transducers is respectively equipped with the both ends of the downstream release device 34
No. 3 electrostatic transducers 63, are equipped with insulation figure layer on the 1-3 electrostatic transducers, it is embedded on the inside of pipe main body
In wall, the smooth straight of release inner-walls of duct ensure that；The ring of a diameter of 0.4m is equipped with the 323 downstream 0.5m of nozzle
No. 4 electrostatic transducers 64 of shape, 1 to No. 4 electrostatic transducer are connected with the electrostatic detection platform.
The electrostatic induction device 4 includes static board 41, electrostatic probe 42, dielectric holder 43 and supporting rod 44, in distance
Static board 41 is placed at the 1.5m of nozzle downstream, the static board 41 is diameter 0.25m, the rounded tinned copper plate of thickness 0.01m, its
It is connected by the dielectric holder 43 with the supporting rod 44 below, the downstream 0.005m cloth at rounded tinned copper plate center
The electrostatic probe 42 is equipped with, the electrostatic probe 42 is grounded, and the electrostatic probe is due to detecting tin plating copper coin by containing miscellaneous
The electrostatic electricity produced during the airflow scouring of matter, and then calculate the energy discharged during spark discharge.
The filming apparatus 10 is being set at nozzle 10cm, and the filming apparatus 10 includes 101 He of high-speed camera
Infrared photography device 102, with detection pipe outward ignition situation and analysis ignition location.
The filming apparatus, the signal pickup assembly and the electrostatic monitoring platform are connected with the computer, this
Electrostatic monitoring platform model can be ETS-624 electrostatic monitoring platforms in utility model.
The method measured using above-mentioned high pressure hydrogen pipeline shock wave and electrostatic coupling measuring system, its step are:
1) above-mentioned each device is placed on horizontal experimental bench, destatics all devices outside apparatus for deivation and be both needed to electrostatic and connect
Ground, according to test purpose, upstream adds measured particulate matter in release device or downstream release device；
2）Pipeline all departments are connected firmly, air tightness test then is carried out to the system assembled, suds can be used
Each coupling part is smeared, with the air-tightness of check device, confirms that air-tightness is good；
For possible metal particulate in simulation Hydrogen Line, addible material has iron oxide, ferrous oxide, oxidation Asia
Lead, silica, the particulate matter quality scope of all kinds of materials is 0.1-5g, 30 μm of particle diameter D90 ＜.Needing to measure release switch
When producing the influence of process to electrostatic, particulate matter can be added in the trapezoid platform of release switch upstream；Studying different releases
Under mode, during the influence of the length of pipe main body and shock strength electric stress, the upstream of pipeline can be discharged in downstream, approached
Particle is added in upstream release device at release switch；In research lip jet and the generation feelings of electrostatic in air mixed process
During condition, particulate matter can be added in the release device of downstream.
3）After particulate matter addition is completed, open in nitrogen purging device discharge surge tank after air, closing nitrogen purging
Device valve, is then turned on hydrogen-storing device and high pressure hydrogen is injected into surge tank, treats that hydrogen will in pressure gauge display buffer tank
When reaching specified pressure, hydrogen flowing quantity is reduced；High pressure hydrogen discharges in downstream forms shock wave and with high pressure hydrogen in pipeline
Quick flowing；Hydrogen drives particulate matter to produce electrical fire along pipe main body through electrostatic sensor array impact electrostatic induction device
Flower electric discharge, the data monitored are passed through electrostatic detection platform and signal by electrostatic sensor array and array of pressure sensors respectively
Harvester reaches computer, and the pipe outward ignition situation that filming apparatus will be observed that reaches computer；
4）Hydrogen gas cylinder valve can be closed after lighting a fire, stops supply hydrogen, opens nitrogen purging device, extinguish
Jet bubble reactor, reduces unit temp, prepares next round experiment.
When release switch is starts ball valve, surge tank, which reaches specified pressure, can stop injecting hydrogen；In release switch
For rupture disk when, need to constantly inject hydrogen until rupture disk reaches specified pressure and ruptures, the unlatching of band pneumatic ball valve or explosion
After piece rupture, high pressure hydrogen jet stream just quickly exports downstream flow to pipe main body from surge tank, is flowing through placement particulate matter
Upstream release device or downstream release device when, can by the particulate matter placed in device roll up suction high-speed flow in, along pipe
Advance and be finally together discharged into air-flow by nozzle in external environment condition in road；High-speed flow by nozzle rectification passes through external
No. 4 Annular electrostatic sensors, the static board of direct impact induced electrostatic electrification（I.e. tin plating copper dish）, static board occur impact
Electricity, due to having insulated therefore have accumulated a large amount of electrostatic, when accumulation of static electricity to a certain extent when can be with the ground connection electrostatic probe on right side
Sufficiently large potential difference is formed so as to which spark discharge occur, is grounded at this time around electrostatic probe by the mixing of hydrogen and air
Fuel gas surrounds, and the energy of spark discharge release will light ambient gas, and the energy of electric spark release can be examined by electrostatic
Survey platform record.
The intensity and spread speed of shock wave can be detected by array of pressure sensors in the process, if occurring in pipe
Spontaneous combustion can also detect the superpressure pressure wave that detonation produces by pressure sensor, while photoelectric sensor can be to be in detection pipe
The no position that igniting and igniting occurs and occurs；Electrostatic sensor array can detect in pipeline metal particulate at different cross section
It is powered so that analyze electrostatic accumulation and release process；It is mingled with metallic particles in air-flow and is discharged into outside by nozzle
Behind space, effect and the electrostatic spark of air-flow and electrostatic induction metal dish can be observed by high-speed camera and infrared imaging
The process of discharge igniting.
The advantages of basic principle, main feature and the utility model of the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Simply illustrate the utility model principle, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
Various changes and modifications are had, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed scope is defined by the appending claims and its equivalent thereof.
Claims (6)
1. high pressure hydrogen pipeline shock wave and electrostatic coupling measuring system, it is characterised in that including hydrogen-storing device, nitrogen purging dress
Put, release device, electrostatic induction device, array of pressure sensors, photosensor arrays, electrostatic sensor array, signal are adopted
Acquisition means and computer, the hydrogen-storing device and the nitrogen purging device pass through its corresponding admission line and surge tank respectively
Front end connection, be respectively equipped with air intake valve in the air inlet pipe, the end of the surge tank is equipped with emptying device and described releases
Device is put, the electrostatic sensor array being connected with electrostatic detection platform and the letter are respectively equipped with the release device
The array of pressure sensors and photosensor arrays of number harvester connection, the end of the release device are equipped with described
Electrostatic induction device and filming apparatus, the filming apparatus, the signal pickup assembly and the electrostatic monitoring platform are and institute
State computer connection.
2. high pressure hydrogen pipeline shock wave according to claim 1 and electrostatic coupling measuring system, it is characterised in that described to release
Putting device includes trapezoid platform release device, pipe main body, upstream release device and downstream release device, the pipe main body bag
Upstream release pipe, downstream release pipe and the nozzle set gradually is included, the upstream release pipe end is discharged by the upstream to be filled
To put and be connected with downstream release pipe, the downstream release pipe end is connected by the downstream release device with the nozzle,
The trapezoid platform release device and the release switch positioned at its end are equipped with successively in the upstream release pipe.
3. high pressure hydrogen pipeline shock wave according to claim 2 and electrostatic coupling measuring system, it is characterised in that described to release
It is rupture disk or pneumatic ball valve to decontrol pass.
4. high pressure hydrogen pipeline shock wave according to claim 3 and electrostatic coupling measuring system, it is characterised in that described quiet
Electric transducer array includes No. 1 electrostatic transducer, No. 2 electrostatic transducers, No. 3 electrostatic biographies set gradually along the pipe main body
Sensor and No. 4 electrostatic transducers, No. 1 electrostatic transducer are located in the pipe main body and are located at the upstream release device
End, No. 2 electrostatic transducers and No. 3 electrostatic transducers are respectively positioned in the pipe main body and are respectively provided at described
The both ends of downstream release device, the nozzle end are equipped with No. 4 electrostatic transducers.
5. high pressure hydrogen pipeline shock wave according to claim 2 and electrostatic coupling measuring system, it is characterised in that the light
Electric transducer array includes 3 photoelectric sensors being sequentially arranged on pipe main body outer wall, and the array of pressure sensors includes
It is sequentially arranged on the pipe main body outer wall and humidity sensor corresponding with 3 photoelectric sensors, temperature sensor respectively
And pressure sensor, the surge tank lower section are equipped with threeway conduit, the humidity sensor, the temperature sensor, the pressure
Force snesor and 3 photoelectric sensors are connected by conducting wire with signal pickup assembly and threeway conduit respectively.
6. according to claim 1-5 any one of them high pressure hydrogen pipeline shock wave and electrostatic coupling measuring system, its feature exists
In the electrostatic induction device includes static board, electrostatic probe, dielectric holder and supporting rod, and static board is located at the electrostatic and passes
Sensor array ends, the static board are connected by the dielectric holder with the supporting rod below, the static board
End is equipped with the electrostatic probe, the electrostatic probe ground connection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721043232.0U CN207318397U (en) | 2017-08-21 | 2017-08-21 | High pressure hydrogen pipeline shock wave and electrostatic coupling measuring system |
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| CN201721043232.0U CN207318397U (en) | 2017-08-21 | 2017-08-21 | High pressure hydrogen pipeline shock wave and electrostatic coupling measuring system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107490598A (en) * | 2017-08-21 | 2017-12-19 | 南京工业大学 | High pressure hydrogen pipeline shock wave and electrostatic coupling measuring system and method |
| CN114910600A (en) * | 2021-02-08 | 2022-08-16 | 中国石油化工股份有限公司 | Combustion behavior visualization test device and method |
-
2017
- 2017-08-21 CN CN201721043232.0U patent/CN207318397U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107490598A (en) * | 2017-08-21 | 2017-12-19 | 南京工业大学 | High pressure hydrogen pipeline shock wave and electrostatic coupling measuring system and method |
| CN114910600A (en) * | 2021-02-08 | 2022-08-16 | 中国石油化工股份有限公司 | Combustion behavior visualization test device and method |
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