CN111307863B - Combustible gas hot surface ignition experimental device and method in flowing state - Google Patents
Combustible gas hot surface ignition experimental device and method in flowing state Download PDFInfo
- Publication number
- CN111307863B CN111307863B CN202010186396.9A CN202010186396A CN111307863B CN 111307863 B CN111307863 B CN 111307863B CN 202010186396 A CN202010186396 A CN 202010186396A CN 111307863 B CN111307863 B CN 111307863B
- Authority
- CN
- China
- Prior art keywords
- hot surface
- gas
- combustible gas
- valve
- 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
Images
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
- G01N25/50—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
Abstract
A combustible gas hot surface ignition experimental device and method in a flowing state comprise a reaction vessel (16), a gas distribution system, a hot surface ignition system, an explosion suppression system, a data acquisition system, a loop cleaning system, a schlieren system and a torch system. The combustible gas explosion experiment under different hot surface ignition conditions can be carried out, provide technical reference for the prevention and the control of combustible gas explosion accident, the hot surface of combustible gas when the experiment contrast is static is ignited through the hot surface of combustible gas who carries out under the flow condition the experiment, thereby know the influence of air current disturbance effect to combustible gas hot surface ignition process, through different hot surface ignition temperature, can study the influence law of hot surface temperature to combustible gas explosion characteristic, through setting for different hot surface shapes, can study the influence mechanism of hot surface shape to combustible gas explosion characteristic.
Description
Technical Field
At present, combustible gas plays an important role in the production and life of society. For example, in northern china, natural gas is used for collective heating, hydrogen is used as a fuel of a hydrogen fuel cell to provide power for new energy automobiles, and synthesis gas produced by a coal gasification process is widely applied to various gas boilers, gas turbines and the like. However, the success of the industrial and domestic use of combustible gases depends, besides on the economic efficiency, also on the safety during their production and use. Once these combustible gases leak in the course of production, storage, transportation and use, they are easy to produce combustion explosion and poisoning accident, so that it can result in personal injury and loss of property.
In the research process, the invention finds that the conventional combustible gas hot surface ignition experiment firstly introduces combustible gas into an explosion container, heats the hot surface to the ignition temperature for ignition after the gas is uniform and static, and does not provide a research aiming at the combustible gas hot surface ignition in a flowing state.
Based on the above, the invention researches the hot surface ignition characteristics of the combustible gas-air premixed gas (specifically, the synthesis gas-air premixed gas is taken as an example) in the flowing state, and makes a hot surface ignition test device for simulating the combustible gas in the flowing state. By the device, the influence of the determined hot surface ignition temperature and the hot surface shape on the ignition characteristic can be known, and the device can be compared with the hot surface ignition characteristic of the combustible gas when the combustible gas is static, so that the influence of the airflow disturbance on the hot surface ignition characteristic of the combustible gas can be known. Has important significance for preventing and controlling the combustible gas explosion accident.
Disclosure of Invention
Aiming at the existing problems, the invention provides an experimental device for testing the ignition and explosion characteristics and the explosion reaction process of the hot surface of the combustible gas in the flowing state under the multi-factor condition. The experimental device can accurately test the explosion characteristic parameters of various combustible gases under different hot surface conditions, and can also compare with the hot surface ignition characteristics of the combustible gases when the combustible gases are static, so that the influence rules and the explosion reaction mechanism of the different hot surface conditions on the explosion characteristic parameters are researched, the influence of the airflow disturbance effect on the hot surface ignition characteristics of the combustible gases is known, and the experimental device has important significance for preventing and controlling the explosion accidents of the combustible gases.
The technical solution of the invention is as follows: the combustible gas hot surface ignition experimental device under the flowing state is characterized in that: the device comprises a reaction vessel, a gas distribution system, a thermal surface ignition system, an explosion suppression system, a data acquisition system, a loop cleaning system, a schlieren system and a torch system, wherein the explosion suppression system is arranged on the left side and the right side of the reaction vessel, the explosion suppression system on the left side is connected with a vacuum valve and a vacuum pump in the torch system and the loop cleaning system through a three-way valve, an exhaust valve, a mass flowmeter D and a pressure reducing valve are sequentially arranged between the torch system and the three-way valve from left to right, the explosion suppression system on the right side is connected with the gas distribution system and an air compressor in the loop cleaning system through the three-way valve, a mass flowmeter C and an air inlet valve are sequentially arranged between the explosion suppression system on the right side and the three-way valve from left to right, the ignition system comprises a thermal surface, a line pipe, a sealing binding post and a temperature controller, the thermal surface is positioned in the reaction vessel, and the temperature controller is connected with the line pipe through the sealing post, the data acquisition system comprises a computer, a data acquisition instrument, a synchronous controller, a pressure sensor and a temperature sensor, wherein the pressure sensor and the temperature sensor are respectively arranged on the upper part of the reaction vessel, the pressure sensor and the temperature sensor are connected with the synchronous controller through leads, the signal input end of the computer is connected with the data acquisition instrument and the synchronous controller, the data acquisition system is connected with an ignition system, a texture system is connected with the synchronous controller and is erected in front of the reaction vessel and in front of the two pieces of rear transparent glass, and the whole reaction process is recorded.
As a further improvement, the method is characterized in that: the reaction vessel is by a square container, controls two toper air chambers, and the sealing strip is constituteed, two sensor jacks are left on the reaction vessel top, and an air inlet is left to the right air chamber, and a sealing terminal jack is left to the right lower extreme, and a gas outlet is left to the left air chamber, before the reaction vessel, back are two clear glass, are the steel sheet from top to bottom, control two metal meshes, the inside foam metal that fills of toper air chamber can play even reaction gas velocity of flow and flame proof's effect, the metal mesh has the effect of supporting foam metal, the sealing strip is in order to guarantee the gas tightness in gap around the clear glass.
As a further improvement, the method is characterized in that: the gas distribution system comprises a combustible gas cylinder, an air cylinder, mass flowmeters A and B, a buffer tank and a connecting pipeline, wherein the buffer tank is connected with a gas inlet of the reaction container, the combustible gas cylinder and the air cylinder are connected in parallel and connected with the buffer tank through the pipeline, a gas cylinder valve and the mass flowmeters A and B are respectively arranged at the outlets of the synthetic gas cylinder and the air cylinder, and the buffer tank is a circular pressure container.
As a further improvement, the method is characterized in that: the hot surface has different shapes such as square, rectangle, circle, cylinder and the like, and the circuit pipe is processed by alumina ceramics and leads.
As a further improvement, the method is characterized in that: the flame-proof system comprises foam metal and two flame arresters, the foam metal is filled in conical air chambers on the left side and the right side of the reaction container, the two flame arresters are respectively installed on a connecting pipeline of a right air inlet and a left air outlet of the reaction container, and the foam metal plays a role in uniform gas flow rate besides being used for flame retardance and flame suppression.
As a further improvement, the method is characterized in that: the schlieren system comprises two reflectors, a light source, a convex lens, a knife edge and a high-speed camera, and is erected in front of the reaction container, and the reaction process of the experiment can be recorded in the whole process.
As a further improvement, the method is characterized in that: according to the torch system, the alcohol lamp is placed in the isolation hood, the flame of the alcohol lamp is located right in front of the output end of the gas guide pipe and can be used for burning the discharged waste gas, and the isolation hood can be used for isolating the waste gas and preventing the toxic gas from flowing into the air.
As a further improvement, the method is characterized in that: the method for carrying out combustible gas explosion test by using the combustible gas hot surface ignition experimental device in the flowing state (taking synthesis gas as an example) comprises the following steps:
step 1: installing and connecting all instrument equipment of the hot surface ignition experimental device, installing and debugging a schlieren system, checking the sealing effect of a pipeline and an interface, and debugging and correcting the state of each system;
step 2: firstly, opening an air inlet valve (7), a three-way valve A (6), a three-way valve B (10), a pressure reducing valve (21), an exhaust valve (22) and an air compressor (3), and conveying dry air to the whole loop to clean the whole loop;
and step 3: closing the air inlet valve (7), the three-way valve A (6), the pressure reducing valve (21) and the exhaust valve (22), opening the vacuum valve (25), starting the vacuum pump (24), and vacuumizing the reaction container (16);
and 4, step 4: opening a mass flow meter A, B (2), setting flow parameters, opening a gas cylinder valve (1) to enable synthesis gas and air to enter a buffer tank (4), preparing premixed gas, and closing the gas cylinder valve and the mass flow meter after the gas flow reaches the set parameters;
and 5: starting a computer (28), a data acquisition instrument (26), a synchronous controller (27) and a schlieren instrument (35) for recording;
step 6: introducing premixed gas, igniting an alcohol burner (31), adjusting a pressure reducing valve (21), sequentially opening a three-way valve A (6), an air inlet valve (7), a three-way valve B (10) and an exhaust valve (22), introducing the premixed gas in a buffer tank (4) into a reaction container (16), then flowing out of the exhaust valve, treating waste gas by flame of the alcohol burner, and preparing for heating after observing that the instantaneous flow recorded by a mass flow meter C, D (23) is stable. (ii) a
And 7: pressing the heating switch and heating the hot surface (15) with the temperature controller (5);
and 8: when the temperature of the hot surface reaches the minimum ignition temperature of the premixed gas, the gas is detonated, test data such as explosion pressure, explosion time, explosion flame temperature and the like are recorded through a data acquisition system, and a gas flow field in the whole explosion process is recorded through a schlieren instrument (35);
and step 9: and opening a vacuum valve (25), starting a vacuum pump (24), pumping out residual gas in the reaction container, closing the vacuum valve, and stopping running the vacuum pump.
As a further improvement, the method is characterized in that: according to the method for carrying out combustible gas explosion test on the combustible gas hot surface ignition experimental device in the flowing state (taking synthesis gas as an example), the operation is repeated from the step 1 until the test of the hot surface (15) in one shape is finished, each group of experiments are carried out for 3 times, and the experimental data is the average value of the experimental data of 3 times, so that the accuracy can be improved.
As a further improvement, the method is characterized in that: the method for carrying out combustible gas explosion test according to the combustible gas hot surface ignition experimental device in the flowing state (taking synthesis gas as an example) is characterized in that: the different shapes of the hot surface (15) can be replaced, and the above operations are repeated from step 1, and the correctness of the result is calculated.
The invention has the beneficial effects that: the invention provides a hot surface ignition experimental device for combustible gas in a flowing state, which can be used for carrying out combustible gas explosion experiments under different hot surface ignition conditions and providing technical reference for preventing and controlling combustible gas explosion accidents. The concrete embodiment is as follows: 1) the influence of the airflow disturbance on the hot surface ignition process of the combustible gas is known by comparing the hot surface ignition experiment of the combustible gas in a flowing state with the hot surface ignition experiment of the combustible gas in a static state; 2) the influence rule of the hot surface temperature on the explosion characteristic of the combustible gas can be researched through different hot surface ignition temperatures; 3) by setting different thermal surface shapes, the influence mechanism of the thermal surface shape on the explosion characteristics of the combustible gas can be researched.
Drawings
FIGS. 1 and 2 are schematic structural views of the present invention;
fig. 3 is a perspective view of the present invention.
Wherein: 1-a gas cylinder valve, 2-a mass flowmeter A, B, 3-an air compressor, 4-a buffer tank, 5-a temperature controller, 6-a three-way valve A, 7-an air inlet valve, 8-a flame arrester, 9-an air inlet, 10-a three-way valve B, 11-a conical air chamber, 12-a pressure sensor, 13-a temperature sensor, 14-a line pipe, 15-a hot surface, 16-a reaction vessel, 17-a sealing binding post, 18-a metal net, 19-a foam metal, 20-an air outlet, 21-a pressure reducing valve, 22-an exhaust valve, 23-a mass flowmeter C, D, 24-a vacuum pump, 25-a vacuum valve, 26-a data acquisition instrument, 27-a synchronous controller, 28-a computer and 29-a combustible gas cylinder, 30-air bottle, 31-alcohol lamp, 32-isolation cover, 33-front transparent glass, 34-rear transparent glass and 35-schlieren system.
Detailed Description
For the purpose of enhancing the understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and examples, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.
As shown in the figure, the embodiment provides a combustible gas hot surface ignition experimental device in a flowing state, which comprises a reaction vessel 16, a gas distribution system, a hot surface ignition system, an explosion-proof system, a data acquisition system, a loop cleaning system, a schlieren system and a torch system, wherein the explosion-proof system is arranged on the left side and the right side of the reaction vessel 16, the left explosion-proof system is connected with the torch system and a vacuum valve 25 and a vacuum pump 24 in the loop cleaning system through a three-way valve B10, an exhaust valve 22, a mass flow meter D23 and a pressure reducing valve 21 are sequentially arranged between the torch system and the three-way valve B10 from left to right, the right explosion-proof system is connected with an air compressor 3 in the gas distribution system and the loop cleaning system through the three-way valve A6, a mass flow meter C23 and an air inlet valve 7 are sequentially arranged between the right explosion-proof system and the three-way valve A6 from left to right, the ignition system comprises a hot surface 15 and a line pipe 14, the device comprises a sealing binding post 17 and a temperature controller 5, wherein a hot surface 15 is positioned inside a reaction vessel 16, the temperature controller 5 and the hot surface 15 are connected with a circuit pipe 14 through the sealing binding post 17, a data acquisition system comprises a computer 28, a data acquisition instrument 26, a synchronous controller 27, and a pressure sensor 12 and a temperature sensor 13 which are respectively arranged on the upper part of the reaction vessel 16, the pressure sensor 12 and the temperature sensor 13 are connected with the synchronous controller 27 through conducting wires, the signal input end of the computer 28 is connected with the data acquisition instrument 26 and the synchronous controller 27, the data acquisition system is connected with an ignition system, a schlieren system 35 is connected with the synchronous controller 27 and is erected in front of the reaction vessel 16 and in front of two pieces of rear transparent glass 33 and 34 to record all reaction processes. The reaction vessel 16 is composed of a square container, a left conical air chamber 11 and a right conical air chamber 11, and sealing strips, wherein two sensor jacks are reserved at the top end of the reaction vessel 16, an air inlet 9 is reserved in the right air chamber, a sealing wiring terminal 17 jack is reserved at the lower right end, an air outlet 20 is reserved in the left air chamber, two pieces of transparent glass are arranged in front of and behind the reaction vessel 16, the upper part and the lower part of the reaction vessel are steel plates, two metal nets 18 are arranged on the left side and the right side, foam metal 19 is filled in the conical air chamber 11, the uniform reaction gas flow rate and the explosion-proof effect can be achieved, the metal nets 18 have the effect of supporting the foam metal 19, and the sealing strips are used for ensuring the air tightness of gaps around the transparent glass. The gas distribution system comprises a combustible gas cylinder 29, an air cylinder 30, mass flow meters A and B2, a buffer tank 4 and a connecting pipeline, wherein the buffer tank 4 is connected with a gas inlet 9 of a reaction container 16, the combustible gas cylinder 29 and the air cylinder 30 are mutually connected in parallel and connected with the buffer tank 4 through the pipeline, a gas cylinder valve 1 and the mass flow meters A and B2 are respectively arranged at the outlets of the synthetic gas cylinder 29 and the air cylinder 30, and the buffer tank 4 is a circular pressure container. The hot surface 15 has various shapes such as square, rectangular, circular, cylindrical, etc., and the line pipe 14 is formed by processing alumina ceramics and a wire. The flame-proof system comprises foam metal 19 and two flame arresters 8, wherein the foam metal 19 is filled in conical air chambers 11 on the left side and the right side of the reaction vessel 16, the two flame arresters 8 are respectively arranged on a connecting pipeline of a right air inlet 9 and a left air outlet 20 of the reaction vessel 16, and the foam metal 19 is used for flame retardance and flame suppression and also has the function of uniform gas flow velocity. The schlieren system 35 comprises two reflectors, a light source, a convex lens, a knife edge and a high-speed camera, and is arranged in front of the reaction vessel 16, and the reaction process of the experiment can be recorded in the whole process. The torch system comprises an alcohol burner 31 and a shielding case 32, wherein the alcohol burner 31 is placed in the shielding case 32, the flame of the alcohol burner 31 is positioned right in front of the output end of the gas conduit and can be used for burning the discharged waste gas, and the shielding case 32 can be used for shielding the waste gas and preventing the toxic gas from flowing into the air.
A method for testing combustible gas explosion by a combustible gas hot surface ignition experimental device in a flowing state (taking synthesis gas as an example) comprises the following steps:
step 1: installing and connecting all instrument equipment of the hot surface 15 ignition experimental device, installing and debugging a schlieren system, checking the sealing effect of a pipeline and an interface, and debugging and correcting the state of each system;
step 2: firstly, opening an air inlet valve 7, a three-way valve A6, a three-way valve B10, a pressure reducing valve 21, an exhaust valve 22 and an air compressor 3, and conveying dry air to the whole loop to clean the whole loop;
and step 3: closing the air inlet valve 7, the three-way valve A6, the pressure reducing valve 21 and the exhaust valve 22, opening the vacuum valve 25, starting the vacuum pump 24, and vacuumizing the reaction container 16;
and 4, step 4: opening a mass flow meter A, B2, setting flow parameters, opening a gas cylinder valve 1 to enable combustible gas and air to enter a buffer tank 4, preparing premixed gas, and closing the gas cylinder valve and the mass flow meter after the gas flow reaches the set parameters;
and 5: starting the computer 28, the data acquisition instrument 26, the synchronous controller 27 and the schlieren instrument 35 for recording;
step 6: introducing premixed gas, igniting the alcohol lamp 31, adjusting the pressure reducing valve 21, sequentially opening the three-way valve A6, the air inlet valve 7, the three-way valve B10 and the exhaust valve 22, introducing the premixed gas in the buffer tank 4 into the reaction container 16, then flowing out of the exhaust valve, treating waste gas by the flame of the alcohol lamp, and preparing to heat after the instantaneous flow recorded by the mass flow meter C, D23 is observed to be stable;
and 7: pressing the heating switch, heating the hot surface 15 with the temperature controller 5;
and 8: when the temperature of the hot surface reaches the minimum ignition temperature of the premixed gas, the gas is detonated, test data such as explosion pressure, explosion time, explosion flame temperature and the like are recorded through a data acquisition system, and a gas flow field in the whole explosion process is recorded through a schlieren instrument 35;
and step 9: the vacuum valve 25 is opened, the vacuum pump 24 is started, the residual gas in the reaction vessel is pumped out, the vacuum valve is closed, and the operation of the vacuum pump is stopped.
From step 1, the above operations are repeated until the test of the hot surface 15 of one shape is completed, each set of experiments is performed 3 times, and the experimental data is the average value of the experimental data of 3 times, so that the accuracy can be improved. The differently shaped hot surface 15 can be replaced and the above operations repeated, starting with step 1, to calculate the correctness of the results.
The invention has the beneficial effects that: the invention provides a hot surface ignition experimental device for combustible gas in a flowing state, which can be used for carrying out combustible gas explosion experiments under different hot surface ignition conditions and providing technical reference for preventing and controlling combustible gas explosion accidents. The concrete embodiment is as follows: 1) the influence of the airflow disturbance on the hot surface ignition process of the combustible gas is known by comparing the hot surface ignition experiment of the combustible gas in a flowing state with the hot surface ignition experiment of the combustible gas in a static state; 2) the influence rule of the hot surface temperature on the explosion characteristic of the combustible gas can be researched through different hot surface ignition temperatures; 3) by setting different thermal surface shapes, the influence mechanism of the thermal surface shape on the explosion characteristics of the combustible gas can be researched.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a combustible gas hot surface ignition experimental apparatus under flowing condition which characterized in that: the flame-proof device comprises a reaction container (16), a gas distribution system, a hot surface ignition system, a flame-proof system, a data acquisition system, a loop cleaning system, a schlieren system and a torch system, wherein the flame-proof system is arranged on the left side and the right side of the reaction container (16), the flame-proof system on the left side is connected with the torch system and a vacuum valve (25) and a vacuum pump (24) in the loop cleaning system through a three-way valve B (10), an exhaust valve (22), a mass flow meter D and a pressure reducing valve (21) are sequentially arranged in the middle of the torch system and the three-way valve B (10) from left to right, the flame-proof system on the right side is connected with the gas distribution system and an air compressor (3) in the loop cleaning system through a three-way valve A (6), a mass flow meter C and an air inlet valve (7) are sequentially arranged in the middle of the flame-proof system on the right side and the three-way valve A (6), and the ignition system comprises a hot surface (15), the device comprises a line pipe (14), a sealing binding post (17) and a temperature controller (5), wherein a hot surface (15) is positioned inside a reaction vessel (16), the temperature controller (5) and the hot surface (15) are connected with the line pipe (14) through the sealing binding post (17), a data acquisition system comprises a computer (28), a data acquisition instrument (26), a synchronous controller (27), and a pressure sensor (12) and a temperature sensor (13) which are respectively arranged on the upper part of the reaction vessel (16), the pressure sensor (12) and the temperature sensor (13) are connected with the synchronous controller (27) through wires, the signal input end of the computer (28) is connected with the data acquisition instrument (26) and the synchronous controller (27), the data acquisition system is connected with an ignition system, and a schlieren system (35) is connected with the synchronous controller (27), and the reaction vessel is erected in front of the reaction vessel (16) and in front of the two rear transparent glasses, and the whole reaction process is recorded.
2. The apparatus of claim 1, wherein the apparatus comprises: reaction vessel (16) is by a square container, controls two toper air chambers (11), and the sealing strip is constituteed, two sensor jacks are left on reaction vessel (16) top, and an air inlet (9) are left to the right air chamber, and a sealed terminal (17) jack is left to the right lower extreme, and a gas outlet (20) are left to the left air chamber, reaction vessel (16) are preceding, and the back is two piece clear glass, is the steel sheet from top to bottom, controls and is two metal mesh (18), toper air chamber (11) inside packing foam metal (19).
3. The apparatus of claim 1, wherein the apparatus comprises: the gas distribution system comprises a combustible gas cylinder (29), an air cylinder (30), a mass flow meter A, a mass flow meter B, a buffer tank (4) and a connecting pipeline, wherein the buffer tank (4) is connected with a gas inlet (9) of the reaction container (16), the combustible gas cylinder (29) and the air cylinder (30) are connected in parallel with each other and are connected with the buffer tank (4) through the pipeline, a gas cylinder valve (1), the mass flow meter A and the mass flow meter B are respectively installed at the outlets of the combustible gas cylinder (29) and the air cylinder (30), and the buffer tank (4) is a circular pressure container.
4. The apparatus of claim 1, wherein the apparatus comprises: the hot surface (15) is square or rectangular or circular or cylindrical, and the line pipe (14) is processed from alumina ceramic and a lead.
5. The apparatus of claim 1, wherein the apparatus comprises: the flame-proof system comprises foam metal (19) and two flame arresters (8), wherein the foam metal (19) is filled in conical air chambers (11) on the left side and the right side of the reaction container (16), and the two flame arresters (8) are respectively installed on connecting pipelines of an air inlet (9) and an air outlet (20) of the reaction container (16).
6. The apparatus of claim 1, wherein the apparatus comprises: the schlieren system (35) comprises two reflectors, a light source, a convex lens, a knife edge and a high-speed camera and is arranged in front of the reaction vessel (16).
7. The apparatus according to claim 3, wherein the apparatus comprises: the torch system comprises an alcohol burner (31) and a shielding (32), the alcohol burner (31) is placed in the shielding (32), and the flame of the alcohol burner (31) is positioned right in front of the output end of the gas conduit.
8. The method for testing the explosion of combustible gas by the combustible gas hot surface ignition experimental device in the flowing state according to claim 7, wherein the method comprises the following steps: comprises the following steps:
step 1: installing and connecting all instrument equipment of the hot surface (15) ignition experimental device, installing and debugging a schlieren system (35), checking the sealing effect of a pipeline and an interface, and debugging and correcting the state of each system;
step 2: firstly, opening an air inlet valve (7), a three-way valve A (6), a three-way valve B (10), a pressure reducing valve (21), an exhaust valve (22) and an air compressor (3), and conveying dry air to the whole loop to clean the whole loop;
and step 3: closing the air inlet valve (7), the three-way valve A (6), the pressure reducing valve (21) and the exhaust valve (22), opening the vacuum valve (25), starting the vacuum pump (24), and vacuumizing the reaction container (16);
and 4, step 4: starting mass flowmeters A and B, setting flow parameters, opening a gas cylinder valve (1) to enable synthesis gas and air to enter a buffer tank (4), preparing premixed gas, and closing the gas cylinder valve (1) and the mass flowmeter (2) after the gas flow reaches the set parameters;
and 5: starting a computer (28), a data acquisition instrument (26), a synchronous controller (27) and a schlieren system (35) for recording;
step 6: introducing premixed gas, igniting an alcohol burner (31), adjusting a pressure reducing valve (21), sequentially opening a three-way valve A (6), an air inlet valve (7), a three-way valve B (10) and an exhaust valve (22), introducing the premixed gas in a buffer tank (4) into a reaction container (16), then flowing out of the exhaust valve (22), treating waste gas by flame of the alcohol burner (31), and preparing for heating after observing that the instantaneous flow recorded by a mass flow meter C and a mass flow meter D is stable;
and 7: pressing the heating switch and heating the hot surface (15) with the temperature controller (5);
and 8: when the temperature of the hot surface reaches the minimum ignition temperature of the premixed gas, the gas is detonated, test data such as explosion pressure, explosion time and explosion flame temperature are recorded through a data acquisition system, and a gas flow field in the whole explosion process is recorded through a schlieren system (35);
and step 9: and opening a vacuum valve (25), starting a vacuum pump (24), pumping out residual gas in the reaction container, closing the vacuum valve, and stopping running the vacuum pump.
9. The method for testing the explosion of combustible gas by the combustible gas hot surface ignition experimental device in the flowing state according to claim 8, wherein the method comprises the following steps: starting from step 1, repeating the steps until the test of the hot surface (15) with one shape is finished, performing 3 times of each group of experiments, and averaging the experimental data of 3 times, so that the result is more accurate.
10. The method for testing the explosion of combustible gas by the combustible gas hot surface ignition experimental device in the flowing state according to claim 8, wherein the method comprises the following steps: and (3) replacing the hot surface (15) with different shapes, and repeating the steps from the step 1 to calculate the correctness of the result.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010186396.9A CN111307863B (en) | 2020-03-17 | 2020-03-17 | Combustible gas hot surface ignition experimental device and method in flowing state |
| AU2020104269A AU2020104269A4 (en) | 2020-03-17 | 2020-12-23 | Experimental device and method for hot surface ignition of combustible gas in flowing state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010186396.9A CN111307863B (en) | 2020-03-17 | 2020-03-17 | Combustible gas hot surface ignition experimental device and method in flowing state |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111307863A CN111307863A (en) | 2020-06-19 |
| CN111307863B true CN111307863B (en) | 2022-05-13 |
Family
ID=71155699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010186396.9A Active CN111307863B (en) | 2020-03-17 | 2020-03-17 | Combustible gas hot surface ignition experimental device and method in flowing state |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111307863B (en) |
| AU (1) | AU2020104269A4 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114110588B (en) * | 2021-11-23 | 2023-07-11 | 中国人民解放军战略支援部队航天工程大学 | Plasma control jet flame experiment system and method under high air pressure condition |
| CN114199938B (en) * | 2021-12-14 | 2023-09-26 | 南京工业大学 | Experimental system and method for simulating leakage of storage tank |
| CN114354688B (en) * | 2022-01-06 | 2024-04-12 | 北京理工大学 | Ultralow-temperature hydrogen explosion flow field test monitoring system |
| CN114428104B (en) * | 2022-01-17 | 2023-07-04 | 西北工业大学 | Grid explosion experimental device and method for testing hydrogen or methane combustion limit |
| CN114594137B (en) * | 2022-03-07 | 2023-05-16 | 江苏海洋大学 | Inflammable liquid vapor-dust mixed explosion experimental device and method |
| CN115524373B (en) * | 2022-10-08 | 2023-03-10 | 安徽邮电职业技术学院 | Simulation experiment device based on MQ2 sensor environment detection |
| CN115728438A (en) * | 2022-11-18 | 2023-03-03 | 天津大学 | Device and method for testing combustion characteristics of variable ignition energy working medium |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9310464D0 (en) * | 1993-05-20 | 1993-07-07 | Euratom | Device and method for calibration of sensors |
| DE10215213C1 (en) * | 2002-04-06 | 2003-09-11 | Va Q Tec Ag | Gas pressure in sheet-enveloped evacuated thermal insulation panel determining device, has built-in covered metal plate acting as thermal reservoir |
| BR102014011707B1 (en) * | 2013-05-17 | 2021-06-15 | Schlumberger Technology B.V. | MEASUREMENT DEVICE, WELL BOTTOM TOOL, AND METHOD |
| CN103454308B (en) * | 2013-09-23 | 2016-09-07 | 中国科学技术大学 | A kind of combustible gas and air pre-mixing gas explosion process Flame Propagation and the experimental rig of suppression |
| RU2546845C1 (en) * | 2013-12-03 | 2015-04-10 | Государственный научный центр Российской Федерации-федеральное государственное унитарное предприятие "Исследовательский Центр имени М.В. Келдыша" | Test device for low-endurance thermal fatigue of structural materials in gas flows |
| CN106248733B (en) * | 2016-08-24 | 2018-09-14 | 西安科技大学 | A kind of more form multifunctional gas, the datonation-inhibition experimental system of dust explosion |
| JP2019128182A (en) * | 2018-01-22 | 2019-08-01 | 株式会社Ｓｏｋｅｎ | Gas characteristic detection device, and fuel cell system |
| CN208502890U (en) * | 2018-05-15 | 2019-02-15 | 吉林大学 | Configurable number of plies mixture strength layering burn device |
| CN208399416U (en) * | 2018-07-20 | 2019-01-18 | 河南理工大学 | It is a kind of to utilize the datonation-inhibition experimental provision of low-carbon mixed gas hydrate |
| CN109283222A (en) * | 2018-11-27 | 2019-01-29 | 北京石油化工学院 | Metal material inhibits the method and experimental provision of flammable explosive gas explosion |
| CN209416956U (en) * | 2018-11-27 | 2019-09-20 | 北京石油化工学院 | Metal material inhibits the experimental provision of flammable explosive gas explosion |
| CN110702732A (en) * | 2019-09-20 | 2020-01-17 | 北京石油化工学院 | Device and method for testing explosion characteristics of combustible gas with adjustable humidity |
-
2020
- 2020-03-17 CN CN202010186396.9A patent/CN111307863B/en active Active
- 2020-12-23 AU AU2020104269A patent/AU2020104269A4/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| AU2020104269A4 (en) | 2021-03-11 |
| CN111307863A (en) | 2020-06-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111307863B (en) | Combustible gas hot surface ignition experimental device and method in flowing state | |
| CN101581649B (en) | Test device for combustion temperature of solid propellant | |
| CN104392753A (en) | Experimental system used for simulating severe accident conditions of containment of nuclear power plant, and implementation method thereof | |
| CN104269195B (en) | The implementation method of the experimental system of simulation Nuclear Safety shell basis accident operating mode | |
| CN102935275B (en) | A kind of test method and device evaluating total flooding extinguishing property | |
| CN113376209A (en) | Horizontal combustion test device and method for wires and cables | |
| Chow et al. | An experimental study of vented explosions in a 3: 1 aspect ratio cylindrical vessel | |
| CN101975717A (en) | Combustible gas explosion limit test system in non-standard state | |
| CN109509567A (en) | The device and method of simulation post-processing organic phase combustion emissions aerosol release | |
| CN106290703A (en) | Coal thermal insulation spontaneous combustion experimental provision and method | |
| CN113624405B (en) | Hydrogen leakage diffusion test device in limited space | |
| CN201837624U (en) | Combustible gas explosion limit testing system under non-standard states | |
| CN108389636B (en) | Combustible gas explosion experiment system and method in a kind of small size pipeline | |
| CN108872310A (en) | A kind of Mixed Gases Explosion limit measuring method and device | |
| CN110068667A (en) | A kind of experimental provision and method for simulating high activity liquid waste hydrogen explosion in post-processing | |
| CN101327364A (en) | Ferrocene extinguishment experiment system | |
| CN113075559A (en) | Hydrogen fuel cell soaks test device | |
| CN205210005U (en) | Test combustible gas or steam explosion limit's autoclave system | |
| CN113552169A (en) | Device and method for testing characteristic parameters of combustible gas flowing and blasting process | |
| CN202942579U (en) | Testing apparatus for evaluating total-flooding fire extinguishing performance | |
| CN203337587U (en) | Experimental device for testing colloid fire-extinguishing performance | |
| CN205958196U (en) | Gas table cuts off leakproofness detection device | |
| CN215297213U (en) | Horizontal combustion test device for electric wires and cables | |
| CN109682272A (en) | A kind of shock wave apparatus to cause bursting | |
| CN115014767B (en) | Oxygen-enriched air accompanying flow combustion test device based on laser ignition |
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 | ||
| CB03 | Change of inventor or designer information |
Inventor after: Guo Pinkun Inventor after: Liu Songjie Inventor after: Wang Zhirong Inventor after: Wang Xuxu Inventor after: Wang Baishi Inventor after: Dong Jun Inventor before: Guo Pinkun Inventor before: Wang Baishi Inventor before: Wang Zhirong Inventor before: Wang Xuxu Inventor before: Liu Songjie Inventor before: Dong Jun |
|
| CB03 | Change of inventor or designer information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |