CN207423856U - The experimental provision that externally-applied magnetic field influences premixed gas explosive characteristic - Google Patents
The experimental provision that externally-applied magnetic field influences premixed gas explosive characteristic Download PDFInfo
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- CN207423856U CN207423856U CN201721045602.4U CN201721045602U CN207423856U CN 207423856 U CN207423856 U CN 207423856U CN 201721045602 U CN201721045602 U CN 201721045602U CN 207423856 U CN207423856 U CN 207423856U
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Abstract
The utility model discloses the experimental provisions that a kind of externally-applied magnetic field influences premixed gas explosive characteristic, including adjustable additional electromagnetic field, nonmetallic transparent material premixed gas explosion pipe-line system, air distribution system, transient state blast pressure system, high speed video system, high-energy ignition system, it is visualized using all-transparent and is compatible with transient state blast pressure acquisition system, it can realize the Synchronization Analysis of explosive flame propagation characteristic and transient state blast pressure feature, draw the flame propagation velocity that block blast-proof materials explodes to premixed gas, flame intensity, the affecting laws of the explosions such as transient state blast pressure and rate of pressure rise, the further genralrlization of block blast-proof materials is contributed to use.
Description
Technical field
The utility model is related to a kind of gas combustion explosion scientific research and experiment test technology more particularly to one kind are additional
The experimental provision that magnetic field influences premixed gas explosive characteristic.
Background technology
With the high speed development of national economy and the adjustment of energy resource structure, inflammable and explosive chemicals and imflammable gas obtain
Extensive use, is the essential raw materials for production of industrial development and fuel energy, and future will be further promoted with the stone that liquefies
Industrial production, the status of domestic energy structure based on oil gas and natural gas.But inflammable and explosive chemicals and imflammable gas
During exploitation, conveying, storage, processing and use or because leakage causes gas burst accident to happen occasionally, often
Because flame and shock wave that combustion explosion generates easily caused by adjacent equipment and structures destruction, cause the injures and deaths and warp of personnel
Ji loss, drastically influences the relevant industries such as national product, energy extraction, communications and transportation, petrochemical industry.Therefore to flammable gas
Study on influencing factors is carried out in body explosion and injury survey research is very necessary.
In existing explosive characteristic research experiment device, mainly based on the test of transient state blast pressure, coordinate small area
Observation window or all-transparent visualization explosion pipeline, no pressure acquisition system, both experimental provisions all can not achieve premix
The explosion such as explosive flame spread speed, flame intensity, transient state blast pressure and rate of pressure rise of gas burst overall process is special
The Synchronization Analysis research of sign.
Gas burst is a sufficiently complex and extremely quick physical-chemical reaction process, can be generated perhaps in blast process
More intermediate products and moment product, such as molecule, free radical, ion, electronics, and in magnetic field, chemical reaction system and anti-
Answer the spin of the unpaired electron of object can be affected by magnetic fields, so that the entropy of reaction system changes, and then influenceization
Learn reaction process.So magnetic field can have an impact these intermediate products and moment product reaction process, so that magnetic field is quick-fried to gas
Fried and its propagation can have an impact.
Domestic and foreign scholars are to researchs such as inflammable harmful influence and gas explosion propagation law, dynamic characteristics and influence factors at present
It is more deep, but the achievement in research influenced for magnetic field in terms of gas explosion and its propagation is less, relevant experimental provision
Less, this also constrains the research that magnetic field influences premixed gas explosive characteristic in turn.
Utility model content
The purpose of this utility model is to provide the experimental provision that a kind of externally-applied magnetic field influences premixed gas explosive characteristic.
The purpose of this utility model is achieved through the following technical solutions：
The experimental provision that the externally-applied magnetic field of the utility model influences premixed gas explosive characteristic, including adjustable additional electromagnetism
, nonmetallic transparent material premixed gas explosion pipe-line system, air distribution system, transient state blast pressure system, high speed video system,
High-energy ignition system；
The adjustable additional electromagnetic field includes electric voltage regulator and three groups of magnetic poles, and three groups of magnetic poles connect in parallel
Enter the electric voltage regulator；
The nonmetallic transparent material premixed gas explosion pipe-line system is exploded including nonmetallic transparent material premixed gas
Pipeline, transient pressure sensor, pneumatic operated valve, flange, transient pressure sensor described in several groups are installed in a manner of symmetrical up and down
On the nonmetallic transparent material premixed gas explosion pipeline, described nonmetallic transparent material premixed gas explosion pipeline one end
Closed flange reserve the interface of connection igniter head, the nonmetallic transparent material premixed gas explosion pipeline other end compatibility peace
Filling dismantled and assembled pneumatic operated valve controls closed flange and the closed flange of fastening-type, pneumatic operated valve to be connected by pipeline with pneumatic valve controller,
The nonmetallic transparent material premixed gas explosion pipeline is equipped with burst disk；
The air distribution system includes gas cylinder, gas flowmeter, gas valve；
The high speed video system includes high-speed camera, acquisition software and tripod；
The high-energy ignition system includes high-energy ignition platform and igniter head, and the high-energy ignition platform passes through cable and the point
Duration and degree of heating connects.
The externally-applied magnetic field that the utility model embodiment provides it can be seen from above-mentioned technical solution provided by the utility model
On the experimental provision that premixed gas explosive characteristic influences, visualized using all-transparent and be compatible with transient state blast pressure acquisition system,
It can realize the Synchronization Analysis of explosive flame propagation characteristic and transient state blast pressure feature, draw block blast-proof materials to premixing gas
The affecting laws of the explosions such as flame propagation velocity, flame intensity, transient state blast pressure and the rate of pressure rise of body explosion, help
It is used in the further genralrlization of block blast-proof materials, there is very important economic implications and practical value.
Description of the drawings
Fig. 1 is the experimental provision that the externally-applied magnetic field that the utility model embodiment provides influences premixed gas explosive characteristic
Structure diagram.
In figure：
The nonmetallic transparent material premixed gas explosion pipeline 2- transient pressure sensor 3- magnetic pole 4- pneumatic operated valves 5- of 1-
Dismantled and assembled pneumatic operated valve controls closed flange 6- pneumatic valve controllers 7- electric voltage regulators 8- gas cylinder 9- spinner flowmeters 10-
Triple valve 11- circulating pump 12- air compressor 13- igniter head 14- high-energy ignition platform 15- vacuum meter 16- check valves
17- time-delay relay 18- transient pressures gather host 19- data acquisition computer 20- high-speed cameras.
Specific embodiment
With reference to the attached drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu is fully described by, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole realities
Apply example.Embodiment based on the utility model, those of ordinary skill in the art are obtained without making creative work
The every other embodiment obtained, belongs to the scope of protection of the utility model.
The experimental provision that the externally-applied magnetic field of the utility model influences premixed gas explosive characteristic is preferably embodied
Mode is：
It is quick-fried including adjustable additional electromagnetic field, nonmetallic transparent material premixed gas explosion pipe-line system, air distribution system, transient state
Fried pressure system, high speed video system, high-energy ignition system；
The adjustable additional electromagnetic field includes electric voltage regulator and three groups of magnetic poles, and three groups of magnetic poles connect in parallel
Enter the electric voltage regulator；
The nonmetallic transparent material premixed gas explosion pipe-line system is exploded including nonmetallic transparent material premixed gas
Pipeline, transient pressure sensor, pneumatic operated valve, flange, transient pressure sensor described in several groups are installed in a manner of symmetrical up and down
On the nonmetallic transparent material premixed gas explosion pipeline, described nonmetallic transparent material premixed gas explosion pipeline one end
Closed flange reserve the interface of connection igniter head, the nonmetallic transparent material premixed gas explosion pipeline other end compatibility peace
Filling dismantled and assembled pneumatic operated valve controls closed flange and the closed flange of fastening-type, pneumatic operated valve to be connected by pipeline with pneumatic valve controller,
The nonmetallic transparent material premixed gas explosion pipeline is equipped with burst disk；
The air distribution system includes gas cylinder, gas flowmeter, gas valve；
The high speed video system includes high-speed camera, acquisition software and tripod；
The high-energy ignition system includes high-energy ignition platform and igniter head, and the high-energy ignition platform passes through cable and the point
Duration and degree of heating connects.
The long 1000mm of the nonmetallic transparent material premixed gas explosion pipeline, outer diameter 104mm, internal diameter 100mm, wall thickness
2mm, pressure-resistant 2MPa, the burst disk critical pressure are 0.8MPa.
The size of the magnetic field intensity of the adjustable additional electromagnetic field is realized stepless by the step-less adjustment of electric voltage regulator
It adjusts.
The ignition switch of the high-energy ignition platform is connected with the start button of the electric voltage regulator by delayed relay.
The adjustment parameter of the magnetic field intensity of the adjustable additional electromagnetic field is：Voltage adjustable extent be 0~450V, magnetic field
Adjustable extent be 0~300T.
In the horizontal direction, the distance of transient pressure sensor described in two adjacent groups is more than 1 centimetre.
The experimental provision that the externally-applied magnetic field of the utility model influences premixed gas explosive characteristic, magnetic field intensity can be stepless
It adjusts, is versatile, repeatable experiment.
The utility model is real by the way that several groups of magnetic poles are erected at nonmetallic transparent material premixed gas explosion pipeline both sides
Existing covering of the externally-applied magnetic field to pipeline by adjusting the size of magnetic field intensity, is realized special to magnetic field intensity and premixed gas explosion
The research of the Coupling Rule of sign by Pipe installing transient pressure sensor, and with reference to high-speed photography system, is realized to premix
The research of the comprehensive explosive characteristic such as gas burst transient pressure, rate of pressure rise, explosive flame spread speed and flame intensity,
By the closed flange and the closed flange-interface of fastening-type that compatible installation pneumatic operated valve controls simultaneously, realize to opening explosion test with
It remains silent the research of explosion test, sealing flange is premixed with the nonmetallic transparent material of nonmetallic transparent material premixed gas explosion pipeline
Gasket is installed, burst disk is hard sealing with burst disk interface, and several groups of magnetic poles are in parallel between gas burst pipeline
It is connected by cable with electric voltage regulator, pumped vacuum systems, air distribution system premix gas by pipeline and nonmetallic transparent material
Body explosion pipeline connection, electric voltage regulator pass through cable connection with high-energy ignition platform.
Specific embodiment：
As shown in Figure 1, the central idea of the utility model is special to premixed gas explosion by developing an externally-applied magnetic field
Levy the experimental provision influenced, by the electric voltage regulator that device carries and magnetic core come realize can electrodeless adjustment magnetic field intensity it is additional
Electromagnetic field, by the nonmetallic transparent material premixed gas explosion pipeline of nonmetallic transparent material premixed gas explosion pipeline, and
Pipe installing transient pressure sensor, is combined with high-speed photography system, realizes in premixed gas explosion transient pressure, pressure
The research of the comprehensive explosive characteristic such as raising speed rate, explosive flame spread speed and flame intensity, by being opened in electric voltage regulator startup
It closes installation time-delay relay with high-energy ignition platform ignition switch to be connected, realizes igniting with applying the overall-in-one control schema in magnetic field.
The experimental provision that externally-applied magnetic field described in the utility model influences premixed gas explosive characteristic, including but not only limit
In：
(1) block blast-proof materials is loaded.Explosion pipeline internal resistance is 25kg/m every explosion-proof lamp packed density3, filling rate is
95%, the quality of block blast-proof materials is filled as 187g, and lower end igniter head end leaves blank 5%, and complementary space is filled full.It (is opening
It opens up under externally-applied magnetic field effect, when block blast-proof materials influences to test on premixed gas explosive characteristic)
(2) airtight test.Explosion pipeline is vacuumized 5 minutes, close vacuum valve and is placed 3 minutes, if 3 minutes
Afterwards, vacuum list index does not turn round, shows that device air-tightness is good, if cursor backward, shows with the presence of gas leakage place, to pipeline
Air is inside filled with, find out Gas leak position and takes containment measures, until confirming that whole device air-tightness is intact, can be carried out
Experiment.
(3) vacuumize.It checks that confirmation all valves of device are closed before starting vacuum pump, starts vacuum pump, beat
Vacuum valve is opened, when vacuum meter shows that reaching certain vacuum spends, closes vacuum valve.
(4) distribution is with uniformly mixing.According in the volume of gas burst pipeline and required premixed gas fuel gas it is dense
The volume for needing to inject fuel gas is calculated in degree.After the completion of distribution, start circulating pump, make premixed gas body in explosion pipeline
Interior Xun Huan 5 minutes or more, to complete the uniform mixing of fuel gas-air.
(5) high-speed photography system and pressure acquisition system are started.High-speed motion picture camera is with certain carry out high-speed capture；Below
Frame rate can be 2000 frames/second exemplified by the operating parameter of one group of face, and the sample frequency of pressure acquisition system is 15,000 times/second.
(6) start the starting switch of electric voltage regulator and trigger high-speed camera simultaneously.
(7) data process＆analysis.After experiment, to explosive flame image and the transient state blast pressure number collected
According to processing analysis is carried out, to obtain explosive flame spread speed, transient state detonation peak pressure and rate of pressure rise.
The above is only the preferable specific embodiment of the utility model, but the scope of protection of the utility model is not
This is confined to, in the technical scope that any one skilled in the art discloses in the utility model, can be readily occurred in
Change or replacement, should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should
It is subject to the protection domain of claims.
Claims (4)
1. the experimental provision that a kind of externally-applied magnetic field influences premixed gas explosive characteristic, which is characterized in that including adjustable outer power-up
Magnetic field, nonmetallic transparent material premixed gas explosion pipe-line system, air distribution system, transient state blast pressure system, high-speed camera system
System, high-energy ignition system；
The adjustable additional electromagnetic field includes electric voltage regulator and three groups of magnetic poles, and three groups of magnetic poles access institute in parallel
State electric voltage regulator；
The nonmetallic transparent material premixed gas explosion pipe-line system include nonmetallic transparent material premixed gas explosion pipeline,
Transient pressure sensor, pneumatic operated valve, flange, transient pressure sensor described in several groups are mounted on described in a manner of symmetrical up and down
On nonmetallic transparent material premixed gas explosion pipeline, described nonmetallic transparent material premixed gas explosion pipeline one end it is closed
Flange reserves the interface of connection igniter head, and the nonmetallic transparent material premixed gas explosion pipeline other end compatibility installation is removable
Dress pneumatic operated valve controls closed flange and the closed flange of fastening-type, pneumatic operated valve to be connected by pipeline with pneumatic valve controller, described non-
Metallic transparent material premixed gas explosion pipeline is equipped with burst disk；
The air distribution system includes gas cylinder, gas flowmeter, gas valve；
The high speed video system includes high-speed camera, acquisition software and tripod；
The high-energy ignition system includes high-energy ignition platform and igniter head, and the high-energy ignition platform passes through cable and described igniter head
Connection.
2. the experimental provision that externally-applied magnetic field according to claim 1 influences premixed gas explosive characteristic, which is characterized in that
The long 1000mm of the nonmetallic transparent material premixed gas explosion pipeline, outer diameter 104mm, internal diameter 100mm, wall thickness 2mm.
3. the experimental provision that externally-applied magnetic field according to claim 2 influences premixed gas explosive characteristic, which is characterized in that
The ignition switch of the high-energy ignition platform is connected with the start button of the electric voltage regulator by delayed relay.
4. the experimental provision that externally-applied magnetic field according to claim 1 influences premixed gas explosive characteristic, which is characterized in that
In the horizontal direction, the distance of transient pressure sensor described in two adjacent groups is more than 1 centimetre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721045602.4U CN207423856U (en) | 2017-08-18 | 2017-08-18 | The experimental provision that externally-applied magnetic field influences premixed gas explosive characteristic |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721045602.4U CN207423856U (en) | 2017-08-18 | 2017-08-18 | The experimental provision that externally-applied magnetic field influences premixed gas explosive characteristic |
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| Publication Number | Publication Date |
|---|---|
| CN207423856U true CN207423856U (en) | 2018-05-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107356632A (en) * | 2017-08-18 | 2017-11-17 | 北京石油化工学院 | The experimental provision that externally-applied magnetic field influences on premixed gas explosive characteristic |
-
2017
- 2017-08-18 CN CN201721045602.4U patent/CN207423856U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107356632A (en) * | 2017-08-18 | 2017-11-17 | 北京石油化工学院 | The experimental provision that externally-applied magnetic field influences on premixed gas explosive characteristic |
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