CN113092529A - Gas distribution device and method for protecting explosion venting film based on pressure balance principle - Google Patents
Gas distribution device and method for protecting explosion venting film based on pressure balance principle Download PDFInfo
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- CN113092529A CN113092529A CN202110359992.7A CN202110359992A CN113092529A CN 113092529 A CN113092529 A CN 113092529A CN 202110359992 A CN202110359992 A CN 202110359992A CN 113092529 A CN113092529 A CN 113092529A
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- 238000009826 distribution Methods 0.000 title claims abstract description 94
- 238000004880 explosion Methods 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000013022 venting Methods 0.000 title claims abstract description 14
- 239000011521 glass Substances 0.000 claims abstract description 81
- 239000002985 plastic film Substances 0.000 claims abstract description 27
- 229920006255 plastic film Polymers 0.000 claims abstract description 27
- 238000010892 electric spark Methods 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 8
- 239000010935 stainless steel Substances 0.000 claims abstract description 8
- 238000002474 experimental method Methods 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000010408 film Substances 0.000 abstract 1
- 239000010409 thin film Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 90
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 238000011160 research Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012780 transparent material Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/50—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility
- G01N25/54—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility by determining explosibility
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Abstract
The invention relates to a gas distribution device and a method for protecting a vent and explosion opening film based on a pressure balance principle, wherein the gas distribution device comprises a gas cylinder, an organic glass container, a plastic film, an electric spark generator, a point discharge electrode, a vacuum pump and a gas distribution auxiliary device, wherein the plastic film is arranged at the port of a small-diameter section of the organic glass container, and a stainless steel flange is arranged at the port of the small-diameter section of the organic glass container; a flange is fixed at the small-diameter end of one end of the gas distribution auxiliary device through a sealing ring and is connected with the flange at the port of the small-diameter section of the organic glass container through a bolt; the gas cylinder and the vacuum pump are communicated with the organic glass container; the point discharge electrode is arranged on the side surface of the organic glass container, the point extends into the organic glass container, and the non-point is connected with the positive electrode end of the electric spark generator; and a valve III is arranged at the exhaust end of the gas distribution auxiliary communicated with the atmosphere. The invention has the capability of protecting the thin film of the explosion venting device and has the characteristic of safe operation.
Description
Technical Field
The invention belongs to the technical field of industrial dust explosion protection, and particularly relates to a gas distribution device and a method for protecting a vent film based on a pressure balance principle.
Background
The energy consumption of China is mainly coal, and the relatively laggard coal production and consumption modes also increase the pressure of environmental protection. The combustion of combustible gas can also provide energy for various industries, so that the combustible gas such as natural gas, coal gas and the like is increasingly regarded as one of clean energy. Since the last 70 s, along with the increase of the dependence of industrial development on energy, the explosion of multi-component mixed gas is more and more concerned, and the research on the explosion characteristics of combustible gas by students is expanded to two or more kinds of single gas. In recent years, many scholars research and design different explosion experimental devices to research explosion parameters such as explosion limit of combustible gas, explosion pressure and flame propagation speed under various working conditions. Explosion containers with the volume of about 5L are established according to the standard DIN EN1893, such as Aschun seedlings, Ligang and the like, and the explosion characteristics of converter gas (containing CO, CO2, H2, N2 and O2) with different components are tested; zhanghuang et al investigated the effect of N2 on the explosive limit of coke oven gas using a 20L cylindrical explosion test system. However, in the current research and test system for combustible gas explosion, the materials of the explosion container, whether the explosion container is a 20L ball or a self-made container, are mainly non-transparent materials such as stainless steel and cast iron, and phenomena and characteristics such as flame propagation and explosion airflow are difficult to observe when explosion occurs.
Therefore, it is necessary to use a transparent material as the explosion container, which has the characteristics of easy observation of explosion phenomenon, light weight, easy processing, etc., but due to the characteristics of its own physicochemical properties, the strength is not high, for example, organic glass, the explosion container made of organic glass has weak anti-explosion capability, and an explosion vent needs to be added, and the explosion vent is generally covered with a layer of film to isolate the external atmosphere. However, during the negative pressure distribution process, the film of the explosion vent can be ruptured due to the inconsistent pressures at the two sides. Therefore, a gas distribution device and a method are needed, so that in the gas distribution process, the proportional gas distribution requirement can be realized, and the explosion venting device can be protected and cannot be damaged during gas distribution.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a gas distribution device and a method for protecting a vent and explosion opening film based on a pressure balance principle, which can complete negative pressure gas distribution under the condition that the vent and explosion opening of a film device exists, do not influence normal gas distribution in an explosion container, and have the capability of protecting the film of the vent and explosion device; the gas distribution device can be detached after the gas distribution is completed, the original functions and the experiment process of the experiment device are not affected, and the gas distribution device has the characteristic of safe operation.
A gas distribution device for protecting a vent film based on a pressure balance principle comprises a gas cylinder, an organic glass container, a plastic film, an electric spark generator, a point discharge electrode, a vacuum pump and a gas distribution auxiliary device, wherein the organic glass container is a cylindrical container with multi-path sections and is fixed by a support, and the axis of the organic glass container is parallel to a horizontal plane; the plastic film is arranged at the port of the small-diameter section of the organic glass container; a stainless steel flange is arranged at the port of the small-diameter section of the organic glass container, and a sealing ring is arranged between the flange and the side port of the organic glass container; the gas cylinder is communicated with the top of the organic glass container through a gas pipe, and a valve I is arranged on the gas pipe; the vacuum pump is communicated with the bottom of the organic glass container through a pipeline; the point discharge electrode is arranged on the side surface of the organic glass container, the point of the point discharge electrode extends into the organic glass container, the non-point is connected with the positive end of the electric spark generator, namely the high-voltage output end, through a connecting wire, and the auxiliary pole of the electric spark generator is grounded; threaded ports are formed at the joints of the organic glass container, the gas cylinder, the vacuum pump and the point discharge electrode; a precise negative pressure vacuum pressure gauge I is arranged at the top of the organic glass container;
the gas distribution auxiliary device comprises a multi-diameter section gas distribution pipeline, the outer diameters of two ends of the gas distribution pipeline are smaller than the outer diameter of the middle part of the gas distribution pipeline, a flange is fixed at the small-diameter end of one end of the gas distribution pipeline through a sealing ring, and the small-diameter end of one end of the gas distribution pipeline is connected with the flange at the port of the small-diameter section of the; a valve III is arranged at the exhaust end of the small-diameter end of the gas distribution pipeline communicated with the atmosphere; the top of the gas distribution pipeline is communicated with the top of the organic glass container through a hose, and a valve II is arranged on the hose; and a precise negative pressure vacuum gauge II is installed at the top of the gas distribution pipeline.
The point discharge electrode is a needle copper electrode.
The connecting lead and the connecting part of the connecting lead and the point discharge electrode are provided with high-voltage insulating sleeves, and the connecting part of the connecting lead and the point discharge electrode and the connecting lead are embedded in the high-voltage insulating sleeves to prevent high-voltage electric shock.
The vacuum pump is a rotary vane vacuum pump.
A gas distribution method for protecting a vent and explosion opening film based on a pressure balance principle is carried out by adopting the gas distribution device for protecting the vent and explosion opening film based on the pressure balance principle, and is characterized by comprising the following steps:
the method comprises the following steps: installing a precise negative pressure vacuum pressure gauge I at the top of the organic glass container, installing a precise negative pressure vacuum pressure gauge II at the top of the gas distribution pipeline, and connecting a rotary vane vacuum pump to the bottom end of the organic glass container;
step two: a valve I between the gas cylinder and the organic glass container and a valve III on a gas distribution pipeline for communicating the atmosphere are arranged; connecting the gas cylinder;
step three: the tip of the tip discharge electrode extends into the organic glass container through a threaded hole reserved in the organic glass container, and then the tip discharge electrode is fixed on the organic glass container; arranging a plastic film at the port of the small-diameter section of the organic glass container, and fixing the plastic film through a sealing ring and a stainless steel flange; then the valve body is connected with a flange of an auxiliary gas distribution device through a bolt;
step four: connecting the organic glass container with a gas distribution pipeline by using a hose, and mounting a valve II on the hose; then closing the valve I, the valve III and the valve II, and checking the air tightness of the whole device; determining that the air tightness is good, and communicating a rotary-vane vacuum pump with a power supply of a precision negative pressure vacuum pressure gauge I and a power supply of a precision negative pressure vacuum pressure gauge II;
step five: and (3) gas distribution: opening a valve II, closing the valve I and the valve III, starting the rotary vane vacuum pump to pump air, observing the readings of the precise negative pressure vacuum pressure gauge I and the precise negative pressure vacuum pressure gauge II, and closing the rotary vane vacuum pump when the readings of the precise negative pressure vacuum pressure gauge I and the precise negative pressure vacuum pressure gauge II are synchronously reduced to the pressure required by the experiment according to the concentration of the gas required to be prepared;
step six: closing the communicating valve II, simultaneously opening the valve I and the valve III, observing the readings of the precision negative pressure vacuum pressure gauge I and the precision negative pressure vacuum pressure gauge II under the condition of manually keeping the opening degrees of the valve I and the valve III consistent, and completing gas distribution under the condition of not damaging the plastic film when the pressures at the two sides of the plastic film, namely the readings of the precision negative pressure vacuum pressure gauge I and the precision negative pressure vacuum pressure gauge II, are all recovered to the atmospheric pressure;
step seven: and disassembling the gas distribution auxiliary device, and carrying out the next explosion venting experiment.
The invention has the beneficial effects that: the invention can solve the problem that the plastic film can not bear the internal and external pressure difference when distributing gas under negative pressure to cause rupture when organic glass is used as the main material of the explosion device, and through arranging the gas distribution auxiliary device, the invention can distribute gas under negative pressure in the container with a weak explosion venting link, does not influence the normal gas distribution in the explosion container, and has the capability of protecting the film of the explosion venting device; the auxiliary gas distribution device is detachable, original functions and experiment processes of the experiment device are not affected, and the device has the characteristics of simplicity in operation and high test safety.
Drawings
FIG. 1 is a schematic structural connection diagram of a gas distribution device for protecting a vent film based on a pressure balance principle according to the present invention;
wherein,
the device comprises a gas cylinder 1, a valve I2, an electric spark generator 3, a precise negative pressure vacuum pressure gauge I4, a valve II 5, a precise negative pressure vacuum pressure gauge II 6, a valve III 7, a rotary vane vacuum pump 8, an organic glass container 9, a flange 10, an auxiliary gas distribution device 11, a gas distribution pipeline 12 and a plastic film 13.
Detailed Description
For better understanding of the present invention, the technical solutions and effects of the present invention will be described in detail by the following embodiments with reference to the accompanying drawings.
As shown in fig. 1, a gas distribution device for protecting a vent hole film based on a pressure balance principle comprises a gas cylinder 1, an organic glass container 9, a plastic film 13, an electric spark generator 3, a point discharge electrode, a rotary vane vacuum pump 8 and a gas distribution auxiliary device 11, wherein the organic glass container 9 is a cylindrical container with multiple path sections and is fixed by a support, and the axis of the organic glass container 9 is parallel to a horizontal plane; the plastic film 13 is arranged at the port of the small-diameter section of the organic glass container 9 and used for explosion venting; a stainless steel flange 10 is arranged at the port of the small-diameter section of the organic glass container 9 and is used for being connected with an auxiliary gas distribution device 11; and a sealing ring is arranged between the flange 10 and the side port of the organic glass container 9. The gas bottle 1 is communicated with the top of the organic glass container 9 through a gas pipe, and a valve I2 is arranged on the gas pipe; the rotary-vane vacuum pump 8 is communicated with the bottom of the organic glass container 9 through a pipeline; the point discharge electrode is a needle copper electrode and is arranged on the side surface of the organic glass container 9, and the point of the point discharge electrode extends into the organic glass container 9 and is used for detonating the mixed gas; the tip length of the tip discharge electrode in this embodiment is 5 mm. The non-point of the point discharge electrode is connected with the positive end of the electric spark generator 3, namely the high-voltage output end, through a connecting wire, and the auxiliary pole of the electric spark generator 3 is grounded; the connecting lead and the connecting part of the connecting lead and the point discharge electrode are provided with high-voltage insulating sleeves, and the connecting part of the connecting lead and the point discharge electrode and the connecting lead are embedded in the high-voltage insulating sleeves to prevent high-voltage electric shock. Threaded ports are formed in the joints of the organic glass container 9, the gas cylinder 1, the rotary-vane vacuum pump 8 and the point discharge electrode.
Accurate negative pressure vacuum pressure gauge I4 is installed at organic glass container 9 top, and threaded hole is seted up with accurate negative pressure vacuum pressure gauge I4's junction at organic glass container 9 top.
The auxiliary gas distribution device 11 comprises a multi-diameter gas distribution pipeline 12, the outer diameters of two ends of the auxiliary gas distribution pipeline are smaller than that of the middle part of the auxiliary gas distribution pipeline, a flange 10 is fixed at the small-diameter end of one end of the gas distribution pipeline 12 through a sealing ring and connected with the flange 10 at the port of the small-diameter section of the organic glass container 9 through a bolt, and a plastic film 13 is positioned between the auxiliary gas distribution device 11 and the organic glass container 9; and a valve III 7 is arranged at the exhaust end of the other small-diameter end of the gas distribution pipeline 12 communicated with the atmosphere. The top of the gas distribution pipeline 12 is communicated with the top of the organic glass container 9 through a hose, and the hose is provided with a valve II 5.
And a precise negative pressure vacuum gauge II 6 is arranged at the top of the gas distribution pipeline 12.
In the embodiment, the measuring ranges of the precise negative pressure vacuum pressure gauge I4 and the precise negative pressure vacuum pressure gauge II 6 are 0-1MPa, and 0.05MPa is taken as a first level.
A gas distribution method for protecting a vent and explosion opening film based on a pressure balance principle is carried out by adopting the gas distribution device for protecting the vent and explosion opening film based on the pressure balance principle, and specifically comprises the following steps:
the method comprises the following steps: install accurate negative pressure vacuum pressure table I4 at organic glass container 9 tops, install accurate negative pressure vacuum pressure table II 6 at gas distribution pipeline 12 tops, be connected to organic glass container 9 bottom with rotary vane vacuum pump 8.
Step two: a valve I2 between the gas cylinder 1 and the organic glass container 9 and a valve III 7 on a gas distribution pipeline 12 for communicating the atmosphere are arranged; the gas cylinder 1 is connected.
Step three: the tip of the tip discharge electrode is inserted into the organic glass container 9 through a threaded hole reserved in the organic glass container 9, and then the tip discharge electrode is fixed on the organic glass container 9; arranging a plastic film 13 at the port of the small diameter section of the organic glass container 9, and fixing the plastic film 13 through a sealing ring and a stainless steel flange 10; and then is connected with the flange 10 of the gas distribution auxiliary device 11 through bolts.
Step four: connecting the organic glass container 9 with the gas distribution pipeline 12 by using a hose, and mounting a valve II 5 on the hose; then closing the valve I2, the valve III 7 and the valve II 5, and checking the air tightness of the whole device; and determining that the air tightness is good, and communicating a rotary-vane vacuum pump 8 with a power supply of a precision negative-pressure vacuum pressure gauge I4 and a power supply of a precision negative-pressure vacuum pressure gauge II 6.
Step five: gas distribution is started, in this embodiment, taking preparation of methane gas with a volume fraction of 10% as an example, methane is filled in the gas cylinder 1: opening valve II 5, closing valve I2, valve III 7, opening rotary-vane vacuum pump 8 and starting up and bleeding, owing to there is hose intercommunication organic glass container 9 and distribution pipeline 12, so 13 both sides pressure of plastic film keep unanimous, descend in step, observe accurate negative pressure vacuum pressure gauge I4, accurate negative pressure vacuum pressure gauge II 6 registration, close rotary-vane vacuum pump 8 when reaching 90% atmospheric pressure.
Step six: close intercommunication valve II 5, open valve I2, valve III 7 simultaneously, under the unanimous condition of manual keeping valve I2, valve III 7 aperture, observe accurate negative pressure vacuum pressure gauge I4, accurate negative pressure vacuum pressure gauge II 6 registration for plastic film 13 both sides (organic glass container 9 and distribution auxiliary device 11 promptly) pressure keeps relatively unanimous, rises in step, protects plastic film 13's integrality. When the readings of the pressure on the two sides of the plastic film 13, namely the precision negative pressure vacuum pressure gauge I4 and the precision negative pressure vacuum pressure gauge II 6, are restored to the atmospheric pressure, the air distribution is completed under the condition that the plastic film 13 is not damaged, and at the moment, the organic glass container 9, the air distribution auxiliary device 11 and the atmospheric pressure are consistent.
Step seven: and disassembling the auxiliary gas distribution device 11 and carrying out the next explosion venting experiment.
The invention can solve the problem that the plastic film 13 can not bear the internal and external pressure difference during negative pressure gas distribution under the condition that organic glass is used as the main material of the explosion device, namely, the negative pressure gas distribution can be carried out in a container with a weak explosion venting link.
Claims (5)
1. The utility model provides a gas distribution device based on pressure balance principle protection lets out and explodes a mouthful film which characterized in that: the device comprises a gas cylinder, an organic glass container, a plastic film, an electric spark generator, a point discharge electrode, a vacuum pump and an auxiliary gas distribution device, wherein the organic glass container is a cylindrical container with multiple path sections and is fixed by a support, and the axis of the organic glass container is parallel to the horizontal plane; the plastic film is arranged at the port of the small-diameter section of the organic glass container; a stainless steel flange is arranged at the port of the small-diameter section of the organic glass container, and a sealing ring is arranged between the flange and the side port of the organic glass container; the gas cylinder is communicated with the top of the organic glass container through a gas pipe, and a valve I is arranged on the gas pipe; the vacuum pump is communicated with the bottom of the organic glass container through a pipeline; the point discharge electrode is arranged on the side surface of the organic glass container, the point of the point discharge electrode extends into the organic glass container, the non-point is connected with the positive end of the electric spark generator, namely the high-voltage output end, through a connecting wire, and the auxiliary pole of the electric spark generator is grounded; threaded ports are formed at the joints of the organic glass container, the gas cylinder, the vacuum pump and the point discharge electrode; a precise negative pressure vacuum pressure gauge I is arranged at the top of the organic glass container;
the gas distribution auxiliary device comprises a multi-diameter section gas distribution pipeline, the outer diameters of two ends of the gas distribution pipeline are smaller than the outer diameter of the middle part of the gas distribution pipeline, a flange is fixed at the small-diameter end of one end of the gas distribution pipeline through a sealing ring, and the small-diameter end of one end of the gas distribution pipeline is connected with the flange at the port of the small-diameter section of the; a valve III is arranged at the exhaust end of the small-diameter end of the gas distribution pipeline communicated with the atmosphere; the top of the gas distribution pipeline is communicated with the top of the organic glass container through a hose, and a valve II is arranged on the hose; and a precise negative pressure vacuum gauge II is installed at the top of the gas distribution pipeline.
2. The gas distribution device for protecting the explosion venting film based on the pressure balance principle according to claim 1, wherein: the point discharge electrode is a needle copper electrode.
3. The gas distribution device for protecting the explosion venting film based on the pressure balance principle according to claim 1, wherein: the connecting lead and the connecting part of the connecting lead and the point discharge electrode are provided with high-voltage insulating sleeves, and the connecting part of the connecting lead and the point discharge electrode and the connecting lead are embedded in the high-voltage insulating sleeves to prevent high-voltage electric shock.
4. The gas distribution device for protecting the explosion venting film based on the pressure balance principle according to claim 1, wherein: the vacuum pump is a rotary vane vacuum pump.
5. A gas distribution method for protecting a vent and explosion opening film based on a pressure balance principle is carried out by adopting the gas distribution device for protecting the vent and explosion opening film based on the pressure balance principle, which is characterized by comprising the following steps:
the method comprises the following steps: installing a precise negative pressure vacuum pressure gauge I at the top of the organic glass container, installing a precise negative pressure vacuum pressure gauge II at the top of the gas distribution pipeline, and connecting a rotary vane vacuum pump to the bottom end of the organic glass container;
step two: a valve I between the gas cylinder and the organic glass container and a valve III on a gas distribution pipeline for communicating the atmosphere are arranged; connecting the gas cylinder;
step three: the tip of the tip discharge electrode extends into the organic glass container through a threaded hole reserved in the organic glass container, and then the tip discharge electrode is fixed on the organic glass container; arranging a plastic film at the port of the small-diameter section of the organic glass container, and fixing the plastic film through a sealing ring and a stainless steel flange; then the valve body is connected with a flange of an auxiliary gas distribution device through a bolt;
step four: connecting the organic glass container with a gas distribution pipeline by using a hose, and mounting a valve II on the hose; then closing the valve I, the valve III and the valve II, and checking the air tightness of the whole device; determining that the air tightness is good, and communicating a rotary-vane vacuum pump with a power supply of a precision negative pressure vacuum pressure gauge I and a power supply of a precision negative pressure vacuum pressure gauge II;
step five: and (3) gas distribution: opening a valve II, closing the valve I and the valve III, starting the rotary vane vacuum pump to pump air, observing the readings of the precise negative pressure vacuum pressure gauge I and the precise negative pressure vacuum pressure gauge II, and closing the rotary vane vacuum pump when the readings of the precise negative pressure vacuum pressure gauge I and the precise negative pressure vacuum pressure gauge II are synchronously reduced to the pressure required by the experiment according to the concentration of the gas required to be prepared;
step six: closing the communicating valve II, simultaneously opening the valve I and the valve III, observing the readings of the precision negative pressure vacuum pressure gauge I and the precision negative pressure vacuum pressure gauge II under the condition of manually keeping the opening degrees of the valve I and the valve III consistent, and completing gas distribution under the condition of not damaging the plastic film when the pressures at the two sides of the plastic film, namely the readings of the precision negative pressure vacuum pressure gauge I and the precision negative pressure vacuum pressure gauge II, are all recovered to the atmospheric pressure;
step seven: and disassembling the gas distribution auxiliary device, and carrying out the next explosion venting experiment.
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| CN202110359992.7A CN113092529B (en) | 2021-04-02 | 2021-04-02 | Gas distribution device and method for protecting explosion venting film based on pressure balance principle |
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| CN107870180A (en) * | 2018-01-10 | 2018-04-03 | 南京工业大学 | Testing system for gas explosion characteristic structure effect |
| CN108627404A (en) * | 2018-08-03 | 2018-10-09 | 南京工业大学 | Test system and test method for explosion venting flame to induce steam cloud explosion |
| CN109827996A (en) * | 2019-03-26 | 2019-05-31 | 北京石油化工学院 | Sewage network flammable gas explosion communication process test device and method |
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