CN107290384B - Wire mesh explosion suppression heat conduction and free radical quenching test device and method - Google Patents
Wire mesh explosion suppression heat conduction and free radical quenching test device and method Download PDFInfo
- Publication number
- CN107290384B CN107290384B CN201710613844.7A CN201710613844A CN107290384B CN 107290384 B CN107290384 B CN 107290384B CN 201710613844 A CN201710613844 A CN 201710613844A CN 107290384 B CN107290384 B CN 107290384B
- Authority
- CN
- China
- Prior art keywords
- pipeline
- wire mesh
- automatic
- heat conduction
- explosion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004880 explosion Methods 0.000 title claims abstract description 54
- 150000003254 radicals Chemical class 0.000 title claims abstract description 36
- 238000012360 testing method Methods 0.000 title claims abstract description 30
- 230000000171 quenching effect Effects 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000010791 quenching Methods 0.000 title claims abstract description 16
- 230000001629 suppression Effects 0.000 title claims abstract description 15
- 210000001503 joint Anatomy 0.000 claims abstract description 23
- 230000000694 effects Effects 0.000 claims abstract description 19
- 238000001499 laser induced fluorescence spectroscopy Methods 0.000 claims abstract description 11
- 238000005485 electric heating Methods 0.000 claims abstract description 9
- 230000005764 inhibitory process Effects 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims description 17
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 101000694017 Homo sapiens Sodium channel protein type 5 subunit alpha Proteins 0.000 claims description 8
- 238000009529 body temperature measurement Methods 0.000 claims description 7
- 230000001960 triggered effect Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 4
- 230000008602 contraction Effects 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 claims description 3
- 238000003032 molecular docking Methods 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002073 fluorescence micrograph Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
- G01N25/22—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
- G01N21/643—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes" non-biological material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
- G01N2021/6432—Quenching
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Immunology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Combustion & Propulsion (AREA)
- Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- Optics & Photonics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The invention discloses a testing device and a testing method for explosion suppression heat conduction and free radical quenching of a wire mesh, comprising a testing pipeline system, an automatic pipeline butt joint system, an automatic pipeline rapid closing system, an ignition system, an explosion temperature measuring system, a plane laser induced fluorescence system, a gas distribution system, a vacuumizing system, a wire mesh electric heating system, an automatic control system and a pipeline control system; the test pipeline system comprises a first pipeline and a second pipeline, one ends of the first pipeline and the second pipeline are completely sealed, and the automatic quick closing system is in a completely closed state under the condition that the first pipeline and the second pipeline are not completely abutted. The heat conduction effect of the wire mesh and flame is reduced by gradually increasing the temperature of the wire mesh until the temperature of the wire mesh is the same as that of the flame, and the heat conduction does not exist between the wire mesh and the flame, so that the inhibition effect of heat conduction and quenching of free radicals on gas explosion in the explosion process can be quantitatively studied through the change of free radicals and temperature after the wire mesh when the blank pipe and different wire mesh temperatures are analyzed in a contrasting manner.
Description
Technical Field
The invention relates to a gas explosion wire mesh explosion suppression experimental device, in particular to a wire mesh explosion suppression heat conduction and free radical quenching test device and method, which are used for quantitatively researching the wire mesh heat conduction and free radical quenching explosion suppression mechanism.
Background
Gas explosion is one of the major accidents that causes a group death injury for coal mine workers. Through researches, the multi-layer wire mesh has a good inhibition effect on the gas explosion flame propagation. The inhibition mechanism of the wire mesh to the gas explosion flame propagation is the combined action of the cold wall effect and the wall effect. The cold wall effect refers to the fact that the heat conduction effect of the silk screen cools down the flame and inhibits the propagation of explosion flame. The "wall effect" means that free radicals generated in the explosion process collide with the wall of the porous material, so that a part of the free radicals are destroyed, the number of the free radicals is reduced, and the propagation of explosion flame is inhibited. However, the degree of influence of the heat conduction and the quenching of the free radical wall surface on the propagation of the explosion flame when the explosion flame passes through the wire mesh has not been quantitatively studied. The device is mainly used for quantitatively researching the influence of the heat conduction effect and the free radical wall quenching effect of the wire mesh on the propagation of gas explosion flame.
Disclosure of Invention
The invention aims to provide a testing device and a testing method for explosion suppression heat conduction and free radical quenching of a wire mesh, which are used for quantitatively researching the influence of the heat conduction and the free radical quenching of the wire mesh on gas explosion flame propagation respectively.
The invention aims at realizing the following technical scheme:
the invention relates to a testing device for explosion suppression heat conduction and free radical quenching effect of a wire mesh, which comprises a testing pipeline system, an automatic pipeline butt joint system, an automatic pipeline rapid closing system, an ignition system, an explosion temperature measuring system, a plane laser induced fluorescence system, a gas distribution system, a vacuumizing system, a wire mesh electric heating system, an automatic control system and a pipeline control system;
the test pipeline system comprises a pipeline I and a pipeline II, wherein the pipeline I and the pipeline II are high-pressure-resistant organic transparent glass circular pipelines, one ends of the pipeline I and the pipeline II are completely sealed, the other ends of the pipeline I and the pipeline II are open and are provided with the automatic pipeline butt joint system, the open end of the pipeline II is provided with the automatic pipeline rapid closing system, and the automatic rapid closing system is in a complete closing state in a state that the pipeline I and the pipeline II are not completely butt-jointed;
the ignition system comprises a spark plug arranged in the middle of the closed end of the second pipeline, the spark plug is connected with an electrostatic ignition circuit, and the ignition circuit is provided with a voltage regulating device;
the explosion temperature measurement system comprises a temperature sensor and a data acquisition device, wherein the temperature sensor is fixed in the first pipeline and the second pipeline;
the plane laser induced fluorescence system comprises a laser, a frequency doubling mirror and an ICCD camera, wherein the ICCD camera is arranged on one side of the pipeline I;
the wire mesh electric heating system comprises a heating control device, a high-melting-point tungsten wire and an automatic falling device, wherein the automatic falling device comprises a fixing frame, a clamp, a switch sensor and a heating wire, when the switch sensor receives a signal of the automatic control system, the switch sensor controls the clamp to open and close and the heating wire to disconnect, meanwhile, the wire mesh is rapidly and accurately positioned to fall through controlling the rapid contraction of two control wires connected with the wire mesh, and the two control wires and the wire mesh are rapidly separated after falling to a designated place and are retracted into a control wire box.
According to the testing device for the explosion suppression heat conduction effect and the free radical quenching effect of the metal wire mesh, the testing method for the explosion suppression heat conduction effect and the free radical quenching effect of the metal wire mesh is realized, the heat conduction effect of the metal wire mesh and flame is reduced by gradually increasing the temperature of the metal wire mesh until the temperature of the metal wire mesh is the same as that of the flame, no heat conduction exists between the metal wire mesh and the flame, and the inhibiting effect of the heat conduction and the quenching of the free radicals on gas explosion in the explosion process is quantitatively studied by comparing and analyzing the temperature of an empty pipe and different metal wires and the change of the free radicals and the temperature after the metal wire mesh.
According to the technical scheme provided by the invention, in the test process, the second pipeline is vacuumized, and when the second pipeline is vacuumized to a certain degree, the second pipeline is stopped, a gas distribution system is adopted to charge a certain amount of gas-air mixed gas, and then the second pipeline is stood for one hour to wait for uniform gas mixing. And heating the wire mesh to a certain temperature by adopting a heating device. The automatic butt joint device for the first pipeline and the second pipeline is started before ignition is started, the dropping device of the wire mesh is triggered in the pipeline butt joint process, the wire mesh heated before ignition is guaranteed to be dropped into the clamping groove of the powerful magnet between the first pipeline and the second pipeline, and then the first pipeline and the second pipeline are connected together through the powerful magnet and the interface. After the first pipeline and the second pipeline are connected together, ignition is started, and an automatic closing system of the second pipeline is quickly opened before gas explosion flame reaches the closing partition plate after ignition. The gas explosion flame passes through the heated wire mesh, the laser-induced fluorescence system shoots fluorescent images of free radicals, and the temperature acquisition system acquires the temperatures before and after the explosion passes through the wire mesh respectively. The higher the temperature of the wire mesh, the less heat conduction the flame will take through the wire mesh; if the temperature of the wire mesh is the same as the temperature of the flame, the wire mesh and the flame have almost no heat conduction effect, and at the moment, the inhibition of the wire mesh to the flame is mainly realized through the free radical quenching effect, the free radical distribution image of the flame after passing through the wire mesh under different temperature conditions and the explosion temperature are obtained through adjusting the temperature of the wire mesh, so that the quantitative research of the influence of the heat conduction effect of the wire mesh and the free radical wall quenching effect on the gas explosion flame propagation can be realized.
Drawings
Fig. 1 is a schematic structural diagram of a first pipeline according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a second pipeline according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of a wire mesh heating and dropping device in an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
The invention relates to a testing device for explosion suppression heat conduction and free radical quenching effect of a wire mesh, which comprises the following preferred specific embodiments:
the system comprises a test pipeline system, an automatic pipeline butt joint system, an automatic pipeline rapid closing system, an ignition system, an explosion temperature measurement system, a plane laser induced fluorescence system, a gas distribution system, a vacuum pumping system, a silk screen electric heating system, an automatic control system and a pipeline control system;
the test pipeline system comprises a pipeline I and a pipeline II, wherein the pipeline I and the pipeline II are high-pressure-resistant organic transparent glass circular pipelines, one ends of the pipeline I and the pipeline II are completely sealed, the other ends of the pipeline I and the pipeline II are open and are provided with the automatic pipeline butt joint system, the open end of the pipeline II is provided with the automatic pipeline rapid closing system, and the automatic rapid closing system is in a complete closing state in a state that the pipeline I and the pipeline II are not completely butt-jointed;
the ignition system comprises a spark plug arranged in the middle of the closed end of the second pipeline, the spark plug is connected with an electrostatic ignition circuit, and the ignition circuit is provided with a voltage regulating device;
the explosion temperature measurement system comprises a temperature sensor and a data acquisition device, wherein the temperature sensor is fixed in the first pipeline and the second pipeline;
the plane laser induced fluorescence system comprises a laser, a frequency doubling mirror and an ICCD camera, wherein the ICCD camera is arranged on one side of the pipeline I;
the wire mesh electric heating system comprises a heating control device, a high-melting-point tungsten wire and an automatic falling device, wherein the automatic falling device comprises a fixing frame, a clamp, a switch sensor and a heating wire, when the switch sensor receives a signal of the automatic control system, the switch sensor controls the clamp to open and close and the heating wire to disconnect, meanwhile, the wire mesh is rapidly and accurately positioned to fall through controlling the rapid contraction of two control wires connected with the wire mesh, and the two control wires and the wire mesh are rapidly separated after falling to a designated place and are retracted into a control wire box.
The automatic pipeline docking system comprises:
the first pipeline interface comprises a powerful magnet, a metal wire network card slot, an automatic telescopic clamp, a switch sensor and a position sensor;
the inner diameter of the joint of the second pipeline is the same as that of the joint of the first pipeline, the outer diameter of the joint of the second pipeline is larger than that of the first pipeline, and the joint of the second pipeline comprises a locking clamping groove and a position sensor;
when the position sensor senses that the distance between the first pipeline and the second pipeline is 0, the butt joint is indicated, a signal is transmitted to the automatic control system, the automatic control system transmits the signal to the switch sensor positioned on the first pipeline, and the switch sensor controls the automatic telescopic clamp to rapidly extend out to realize locking with the second pipeline after the pipeline is well butt-jointed.
The wire net card slot is coated with a heat insulating material, and the heat insulating material just clamps the wire net.
The automatic quick closing system of the pipeline comprises a telescopic isolated gas plate and a switch sensor, wherein when the switch sensor receives a signal of the automatic control system, the quick opening of the telescopic isolated gas plate is controlled, and meanwhile, the telescopic isolated gas plate is triggered to be opened only after the closing of the pipeline is completed.
The gas distribution system comprises a gas cylinder, a compressed air cylinder, a valve and a flow controller, and is connected with the second pipeline through a partial pressure gas distribution instrument.
The vacuumizing system is connected with the second pipeline and comprises a vacuum pump, a vacuum sensor and a valve.
The automatic control system comprises an industrial personal computer and a data signal receiving and transmitting device.
The pipeline control system comprises a bracket, a sliding rail and a driving device.
The invention relates to a method for testing explosion suppression heat conduction and free radical quenching of a wire mesh, which comprises the following steps:
the heat conduction effect of the wire mesh and flame is reduced by gradually increasing the temperature of the wire mesh until the temperature of the wire mesh is the same as that of the flame, and the heat conduction does not exist between the wire mesh and the flame, so that the inhibition effect of heat conduction and quenching of free radicals on gas explosion in the explosion process is quantitatively studied through the change of free radicals and temperature after the wire mesh when the temperature of the empty pipe and different wire meshes is analyzed by contrast.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1, 2 and 3:
the device comprises a test pipeline system, an automatic pipeline rapid closing system, an automatic pipeline butt joint system, an ignition system, an explosion temperature measurement system, a plane laser induced fluorescence system, a gas distribution system, a vacuum pumping system, a silk screen electric heating system, an automatic control system and a pipeline control system.
The test pipeline system consists of a pipeline I and a pipeline II, wherein the test pipeline is a high-pressure-resistant organic transparent glass circular pipeline.
One end of the first test pipeline and one end of the second test pipeline are completely sealed by flanges; the automatic quick closing device of the pipeline is arranged at the unsealed end of the pipeline II, and the automatic quick closing device of the pipeline at the unsealed end of the pipeline II is in a complete closing state as long as the pipeline I and the pipeline II are not completely butted.
The ignition system adopts electrostatic ignition, the ignition energy is regulated by regulating voltage, and the spark plug is arranged in the middle of the closed end of the second pipeline.
The explosion temperature measurement system consists of a temperature sensor and a data acquisition system, wherein the temperature sensor is fixed in the first pipeline and the second pipeline.
The plane laser induced fluorescence system consists of a laser, a frequency doubling mirror and an ICCD camera, wherein the ICCD camera is arranged on one side of the pipeline I.
The gas distribution system consists of a gas cylinder, a compressed air cylinder, a valve and a flow controller, and adopts the principle of partial pressure to distribute gas.
The vacuumizing system consists of a vacuum pump, a vacuum sensor, a valve and the like.
The silk screen electric heating system mainly comprises a heating control device, a tungsten wire with a higher melting point, an automatic falling device and the like.
The automatic falling device triggers an automatic falling system in the process of quick closing and butt joint of the pipeline, quickly falls the wire mesh to a designated position, realizes matching with the pipeline after butt joint, mainly comprises a fixing frame, a clamp, a switch sensor, a heating wire and the like, controls the opening and closing of the clamp and the disconnection of the heating wire when receiving signals of the automatic control system by the switch sensor, simultaneously controls two control wires connected with the wire mesh, quickly contracts to realize quick and accurate positioning falling of the wire mesh, quickly separates the two control wires from the wire mesh after falling to the designated position, and withdraws into a control wire box.
The automatic pipeline butt joint system is triggered before the moment of igniting gas to realize the quick butt joint of the pipeline and mainly comprises a powerful magnet, an automatic telescopic clamp and an interface.
The automatic telescopic clamp is arranged on the upper part of an unsealed port of the first pipeline, and after the second pipeline is in butt joint with the first pipeline, the automatic telescopic clamp stretches out of the clamp to realize locking with the second pipeline.
The interface refers to the special design of the interface of the first pipeline and the second pipeline. The first pipeline interface consists of a powerful magnet, a metal wire network card slot, an automatic telescopic clamp, a switch sensor, a position sensor and the like; the inner diameter of the joint of the second pipeline is the same as that of the first pipeline, but the outer diameter of the joint of the second pipeline is larger than that of the first pipeline, so that the two pipelines can be tightly locked after being butted; the interface of the second pipeline mainly comprises a locking clamping groove, a position sensor and the like.
The position sensor senses the distance between the first pipeline and the second pipeline, and when the distance is 0, the position sensor indicates that the first pipeline and the second pipeline are in butt joint, signals are transmitted to the automatic control system, and the automatic control system transmits the signals to the switch sensor positioned on the first pipeline.
And the switch sensor controls the automatic telescopic clamp to extend out rapidly after the signal of the pipeline is well docked.
The wire net card slot is coated with a special heat insulation material which can just clamp the wire net.
The automatic quick closing system for the pipeline is characterized in that the automatic butt joint system for the pipeline is used for opening the isolated gas plate quickly after the butt joint is finished, the automatic butt joint system for the pipeline mainly comprises a telescopic isolated gas plate, a switch sensor and the like, and the switch sensor is used for controlling the quick opening of the telescopic isolated gas plate when receiving a signal of the automatic control system and ensuring that the telescopic isolated gas plate is triggered to be opened only after the pipeline is closed. The gas-insulated plate is coated with a special heat-insulating material to ensure that the wire mesh with higher temperature will not ignite the gas before the flame reaches the wire mesh.
The automatic control system mainly comprises an industrial personal computer, a data signal receiving and transmitting device and the like.
The pipeline control system mainly comprises a bracket, a sliding rail, a driving device and the like.
The experimental procedure of the specific embodiment is:
in the test process, the second pipeline is vacuumized, the second pipeline is stopped when a certain vacuum degree is pumped, a certain amount of gas-air mixed gas is filled into a gas distribution system, and then the second pipeline is kept stand for one hour to wait for uniform gas mixing. And heating the wire mesh to a certain temperature by adopting a heating device. The automatic butt joint device for the first pipeline and the second pipeline is started before the ignition is prepared, the dropping device of the wire mesh is triggered in the butt joint process of the pipelines, the wire mesh heated before the ignition is ensured to drop into the clamping groove of the powerful magnet between the first pipeline and the second pipeline, and then the first pipeline and the second pipeline are connected together through the powerful magnet and the interface. After the first pipeline and the second pipeline are connected together, ignition is started, and an automatic closing system of the second pipeline is quickly opened before gas explosion flame reaches the closing partition plate after ignition. The gas explosion flame passes through the heated wire mesh, the laser-induced fluorescence system shoots a fluorescence image of the free radical, and the temperature acquisition system acquires the temperature of the explosion after passing through the wire mesh.
The working principle of the invention is as follows:
the wire mesh can inhibit the propagation of gas explosion flame through two ways of heat conduction and free radical quenching. By gradually increasing the temperature of the wire mesh, the heat conduction between the wire mesh and the flame is reduced until the temperature of the wire mesh is the same as that of the flame, and no heat conduction exists between the wire mesh and the flame. The inhibition effect of heat conduction and quenching of free radicals on the gas explosion flame propagation in the explosion process is quantitatively studied through the change of free radicals and flame temperature after the silk screen when the empty pipe and different silk screen temperatures are analyzed in a contrasting mode.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (2)
1. The testing device for explosion suppression heat conduction and free radical quenching of the wire mesh is characterized by comprising a test pipeline system, an automatic pipeline butt joint system, an automatic pipeline rapid closing system, an ignition system, an explosion temperature measurement system, a plane laser induced fluorescence system, a gas distribution system, a vacuumizing system, a wire mesh electric heating system, an automatic control system and a pipeline control system;
the test pipeline system comprises a pipeline I and a pipeline II, wherein the pipeline I and the pipeline II are high-pressure-resistant organic transparent glass circular pipelines, one ends of the pipeline I and the pipeline II are completely sealed, the other ends of the pipeline I and the pipeline II are open and are provided with the automatic pipeline butt joint system, the open end of the pipeline II is provided with the automatic pipeline rapid closing system, and the automatic rapid closing system is in a complete closing state in a state that the pipeline I and the pipeline II are not completely butt-jointed;
the ignition system comprises a spark plug arranged in the middle of the closed end of the second pipeline, the spark plug is connected with an electrostatic ignition circuit, and the ignition circuit is provided with a voltage regulating device;
the explosion temperature measurement system comprises a temperature sensor and a data acquisition device, wherein the temperature sensor is fixed in the first pipeline and the second pipeline;
the plane laser induced fluorescence system comprises a laser, a frequency doubling mirror and an ICCD camera, wherein the ICCD camera is arranged on one side of the pipeline I;
the wire mesh electric heating system comprises a heating control device, a high-melting-point tungsten wire and an automatic falling device, wherein the automatic falling device comprises a fixing frame, a clamp, a switch sensor and a heating wire, when the switch sensor receives a signal of the automatic control system, the switch sensor controls the opening and closing of the clamp and the disconnection of the heating wire, meanwhile, the rapid and accurate positioning falling of the wire mesh is realized by controlling the rapid contraction of two control wires connected with the wire mesh, and the two control wires and the wire mesh are rapidly separated after falling to a designated place and are retracted into a control wire box;
the automatic pipeline docking system comprises:
the first pipeline interface comprises a powerful magnet, a metal wire network card slot, an automatic telescopic clamp, a switch sensor and a position sensor;
the inner diameter of the joint of the second pipeline is the same as that of the joint of the first pipeline, the outer diameter of the joint of the second pipeline is larger than that of the first pipeline, and the joint of the second pipeline comprises a locking clamping groove and a position sensor;
when the position sensor senses that the distance between the first pipeline and the second pipeline is 0, the butt joint is indicated, a signal is transmitted to the automatic control system, the automatic control system transmits the signal to the switch sensor positioned on the first pipeline, and the switch sensor controls the automatic telescopic clamp to rapidly extend out to realize locking with the second pipeline after the pipeline is well butt-jointed;
the metal wire net card slot is coated with a heat insulation material, and the heat insulation material just clamps the metal wire net;
the automatic quick closing system of the pipeline comprises a telescopic isolated gas plate and a switch sensor, when the switch sensor receives a signal of the automatic control system, the quick opening of the telescopic isolated gas plate is controlled, and meanwhile, the telescopic isolated gas plate is triggered to be opened only after the closing of the pipeline is completed;
the gas distribution system comprises a gas cylinder, a compressed air cylinder, a valve and a flow controller, and is connected with the second pipeline through a partial pressure gas distribution instrument;
the vacuumizing system is connected with the second pipeline and comprises a vacuum pump, a vacuum sensor and a valve;
the automatic control system comprises an industrial personal computer and a data signal receiving and transmitting device;
the pipeline control system comprises a bracket, a sliding rail and a driving device.
2. A method for testing explosion suppression heat conduction and free radical quenching effect of a metal wire mesh by using a testing device for explosion suppression heat conduction and free radical quenching effect of the metal wire mesh according to claim 1 is characterized in that the heat conduction effect of the wire mesh and flame is reduced by gradually increasing the temperature of the metal wire mesh until the temperature of the wire mesh is the same as that of the flame, no heat conduction exists between the wire mesh and the flame, and the inhibition effect of heat conduction and quenching of free radicals on gas explosion in the explosion process is quantitatively studied by comparing and analyzing the temperature of an empty pipe and different wire meshes and the change of free radicals and temperature after the wire mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710613844.7A CN107290384B (en) | 2017-07-25 | 2017-07-25 | Wire mesh explosion suppression heat conduction and free radical quenching test device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710613844.7A CN107290384B (en) | 2017-07-25 | 2017-07-25 | Wire mesh explosion suppression heat conduction and free radical quenching test device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107290384A CN107290384A (en) | 2017-10-24 |
| CN107290384B true CN107290384B (en) | 2023-12-22 |
Family
ID=60103596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710613844.7A Active CN107290384B (en) | 2017-07-25 | 2017-07-25 | Wire mesh explosion suppression heat conduction and free radical quenching test device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107290384B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114112451A (en) * | 2020-09-01 | 2022-03-01 | 中国石油化工股份有限公司 | Flame arrester testing method and system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101576521A (en) * | 2009-06-10 | 2009-11-11 | 西安科技大学 | Device for testing explosion, spreading and explosion suppression characteristics of inflammable gas and dust |
| CN201837624U (en) * | 2010-10-18 | 2011-05-18 | 南京工业大学 | Combustible gas explosion limit testing system under non-standard states |
| CN103454308A (en) * | 2013-09-23 | 2013-12-18 | 中国科学技术大学 | Apparatus for testing flame propagation and flame suppression in flammable gas and air premixed gas explosion process |
| CN105628737A (en) * | 2015-12-21 | 2016-06-01 | 中国工程物理研究院化工材料研究所 | Chemical explosive loading low-temperature impact initiation experimental device and method |
| CN105699620A (en) * | 2016-03-04 | 2016-06-22 | 宁波工程学院 | Experiment device and method for researching gas-explosion wall-face effects |
| CN205404567U (en) * | 2016-03-04 | 2016-07-27 | 宁波工程学院 | Experimental device for research gaseous detonation wall effect |
| CN207007756U (en) * | 2017-07-25 | 2018-02-13 | 北京市劳动保护科学研究所 | A kind of datonation-inhibition heat transfer of woven wire and free radical extinguishing effect test device |
-
2017
- 2017-07-25 CN CN201710613844.7A patent/CN107290384B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101576521A (en) * | 2009-06-10 | 2009-11-11 | 西安科技大学 | Device for testing explosion, spreading and explosion suppression characteristics of inflammable gas and dust |
| CN201837624U (en) * | 2010-10-18 | 2011-05-18 | 南京工业大学 | Combustible gas explosion limit testing system under non-standard states |
| CN103454308A (en) * | 2013-09-23 | 2013-12-18 | 中国科学技术大学 | Apparatus for testing flame propagation and flame suppression in flammable gas and air premixed gas explosion process |
| CN105628737A (en) * | 2015-12-21 | 2016-06-01 | 中国工程物理研究院化工材料研究所 | Chemical explosive loading low-temperature impact initiation experimental device and method |
| CN105699620A (en) * | 2016-03-04 | 2016-06-22 | 宁波工程学院 | Experiment device and method for researching gas-explosion wall-face effects |
| CN205404567U (en) * | 2016-03-04 | 2016-07-27 | 宁波工程学院 | Experimental device for research gaseous detonation wall effect |
| CN207007756U (en) * | 2017-07-25 | 2018-02-13 | 北京市劳动保护科学研究所 | A kind of datonation-inhibition heat transfer of woven wire and free radical extinguishing effect test device |
Non-Patent Citations (2)
| Title |
|---|
| 多层丝网结构抑制管内气体爆炸的试验;喻健良,孟伟,王雅杰;天然气工业(第06期);116-118 * |
| 输送管道内低浓度瓦斯爆炸传播实验研究;李润之;司荣军;张延松;王磊;;山东科技大学学报(自然科学版)(第01期);35-39 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107290384A (en) | 2017-10-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103454308B (en) | A kind of combustible gas and air pre-mixing gas explosion process Flame Propagation and the experimental rig of suppression | |
| CN103674738B (en) | Under hot conditions, SHPB is automatically to bar impact loading experiment device | |
| CN108802100B (en) | Combustible gas explosion experimental device with concentration gradient and use method | |
| CN102879429B (en) | Testing system for gas explosion characteristic size effect | |
| CN107290384B (en) | Wire mesh explosion suppression heat conduction and free radical quenching test device and method | |
| CN109975358A (en) | A kind of experimental system and method for half open space gases explosion | |
| US9494243B2 (en) | Temperature control valve actuator assembly | |
| CN108535320A (en) | The experimental system that goaf coal spontaneous combustion induces gas and coal dust list, repeatedly explodes | |
| CN103776973A (en) | Electrical fire short circuit simulator and simulation method thereof | |
| CN105424704B (en) | A kind of test system and its test method for being used to simulate mine explosion wall | |
| CN105067655A (en) | Flame retardant electric cable vertical combustion performance testing apparatus under barrel-shaped annular radiation heating condition | |
| CN111272817A (en) | Device for testing explosion characteristic parameters of combustible gas ignited by hot dust under laser irradiation | |
| CN104075948A (en) | Test method of tensile and compression strength of explosive under temperature condition higher than 100 DEG C | |
| CN102520278A (en) | Device used for thermal stability and temperature rise test of transformer sleeve | |
| CN106706704A (en) | Serial sealed combustor device and testing method of relationship of explosive combustion speed, and pressure and temperature | |
| CN207007756U (en) | A kind of datonation-inhibition heat transfer of woven wire and free radical extinguishing effect test device | |
| CN105675643A (en) | Cook-off test apparatus of composite solid propellant | |
| CN108036996A (en) | For the more size rock sample nonstorage calorifiers of SHPB impact tests | |
| CN103091364B (en) | High-temperature environment suitability testing method of initiating explosive material | |
| CN102866175B (en) | Boron particle burning observing device for realizing ignition by utilizing high-pressure xenon lamp | |
| CN106932544A (en) | Anti-explosion explosion-suppression facility validity and electric equipment capability of antidetonance evaluating apparatus and method | |
| CN110221017A (en) | Combustion experiment platform | |
| CN209280660U (en) | Automation equipment for the test of aeronautical material fire resistance | |
| CN204165877U (en) | A kind of oil gas sand control screen high temperature filtration precision observation device | |
| CN103672904A (en) | Gas line of combustor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |