Gas-liquid-solid three-phase vertical tube type explosion test device

Abstract

The invention relates to the technical field of explosion-proof test equipment, and provides a gas-liquid-solid three-phase vertical tube type explosion test device which is characterized by comprising an explosion main tube and a lengthened explosion tube detachably connected with the explosion main tube, and a window is arranged on the side wall of the explosion main tube; the interchangeable base is located at the lower end of the explosion main pipe, a dust diffusion base and a variable-temperature reaction tank base are arranged in the interchangeable base, and the variable-temperature reaction tank base comprises an inner reaction tank and a temperature control wrapping area; and the replaceable top plate is positioned at the upper end of the explosion main pipe and comprises a common top plate, a pressure type water mist top plate with a nozzle and an explosion-proof fixed top plate with a fixed seat. Three-phase switching continuous explosion and explosion suppression tests are carried out through one set of equipment, the equipment cost is reduced, the test efficiency is improved, meanwhile, combined explosion suppression tests can be carried out, and development of related work of the explosion tests is assisted.

Description

Technical Field

[0001] This invention relates to the field of explosion-proof testing equipment technology, and more specifically, to a gas-liquid-solid three-phase vertical tube explosion testing device. Background Technology

[0002] In coal mining, metallurgical, and chemical production processes, explosions caused by gases, coal dust, and solid-liquid reactions are among the most significant and common safety risks. Existing explosion testing equipment is mostly designed for single operating conditions, such as gas-phase explosion pipelines, dust explosion tanks, or liquid-phase reaction pools, making it difficult to conduct systematic studies under multi-phase conditions involving gas, liquid, and solid. To conduct various explosion or suppression tests, multiple sets of equipment are often required, which is not only costly and inefficient but also involves cumbersome switching of test conditions, failing to meet the needs of studying complex coupled explosion mechanisms. Furthermore, existing equipment is insufficient in simulating typical solid-liquid reactions (such as the aluminum-water reaction for hydrogen production) and lacks systematic verification of special liquid-phase explosion suppression methods such as liquid ammonia fine water mist, further limiting its application in coal mining and chemical scenarios.

[0003] Therefore, there is an urgent need for a gas-liquid-solid three-phase vertical tube explosion test device that can switch between different explosion modes and explosion suppression methods within a single set of equipment, so as to reduce research costs, improve test efficiency, and provide experimental conditions for the study of explosion and explosion suppression mechanisms under complex working conditions.

[0004] To address the aforementioned issues, this application proposes a gas-liquid-solid three-phase vertical tube explosion test device. Summary of the Invention

[0005] The purpose of this invention is to provide a gas-liquid-solid three-phase vertical tube explosion test device, which conducts continuous explosion and explosion suppression tests on different phases in a modular manner, thus solving the problems of high cost and low efficiency.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0007] A gas-liquid-solid three-phase vertical tube explosion test apparatus, characterized in that it comprises:

[0008] The main explosive tube and the detachably connected extended explosive tube are provided with a viewing window on the side wall of the main explosive tube;

[0009] An interchangeable base is located at the lower end of the explosion main tube. The interchangeable base contains a dust diffusion base and a variable temperature reaction tank base. The variable temperature reaction tank base includes an inner reaction tank and a temperature-controlled enclosure area.

[0010] Replaceable top plates are located at the top of the explosion main pipe, including ordinary top plates, pressure-type fine water mist top plates with nozzles, and explosion-proof fixed top plates with mounting bases.

[0011] The adjustable height explosion-proof mechanism includes a ring frame coaxial with the explosion main pipe, located above the replaceable top plate, and also includes an explosion-proof mesh inside the explosion main pipe. Screws are evenly distributed around the outer circumference of the ring frame, and the lower end of the screws is rotatably connected to the explosion-proof mesh. The screws rotate with the rotation of the ring frame.

[0012] The data acquisition units located on both sides of the explosion control tube include temperature sensors and pressure sensors.

[0013] The beneficial effects of this invention are:

[0014] 1. A single set of test equipment is formed by interchangeable bases and replaceable top plates and explosion main pipes, covering three-phase explosion and explosion suppression tests in gaseous (combustible gas), solid (dust), and liquid (liquid ammonia, aluminum molten reaction), which solves the space, cost and efficiency problems caused by multiple independent sets of equipment in traditional tests, and realizes rapid switching between different phase tests.

[0015] 2. The variable temperature reaction tank base achieves efficient hydrogen production from aluminum and water through PID temperature control, supports solid-liquid-gas three-phase coupling explosion test, effectively shortens the test cycle and helps the coal mine operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the external structure of the test equipment assembly of the present invention;

[0018] Figure 2 for Figure 1 A schematic diagram of the internal structure of the explosion control tube;

[0019] Figure 3 for Figure 1 A schematic diagram of the explosion-proof mesh and its combination with adjacent components;

[0020] Figure 4 for Figure 1 A schematic diagram of the component structure above the top plate;

[0021] Figure 5 for Figure 1 A schematic diagram of the combined cross-sectional structure of the screw and the ring frame;

[0022] Figure 6 for Figure 1 Schematic diagram of the internal structure of the variable temperature reaction tank;

[0023] Figure 7This is a schematic diagram of the structure of the test equipment according to Embodiment 1 of the present invention;

[0024] Figure 8 This is a schematic diagram of the structure of the experimental equipment of the present invention, in embodiment two.

[0025] Figure 9 This is a schematic diagram of the structure of the experimental equipment of the present invention, embodiment three;

[0026] Figure 10 This is a schematic diagram of the structure of the test equipment in Embodiment 4 of the present invention;

[0027] Figure 11 This is a schematic diagram of the structure of the experimental equipment of the present invention, embodiment five;

[0028] The attached diagram lists the components represented by each number as follows:

[0029] In the picture:

[0030] 1. Explosion tube; 101. View window; 102. Extended explosion tube;

[0031] 2. Interchangeable bases;

[0032] 3. Variable temperature reaction tank; 301. Inner reaction tank; 302. Temperature-controlled enclosure area;

[0033] 4. Replaceable top plate; 401. Nozzle; 402. Mounting base;

[0034] 5. Data acquisition unit; 501. Temperature sensor; 502. Pressure sensor;

[0035] 6. Support rod;

[0036] 7. Ring frame; 701. First rotating wheel; 702. Rotating disk;

[0037] 8. Explosion-proof mesh; 801. Limiting ring; 802. Equal height shims;

[0038] 9. Screw; 901. Limiting plate; 902. External gear; 903. Second rotating wheel. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Please see Figure 1 - Figure 6As shown, the present invention provides a gas-liquid-solid three-phase vertical tube explosion test apparatus, comprising:

[0041] Explosion tube 1: The side wall has a viewing window 101, which is made of quartz tempered glass and is embedded in the side wall of the explosion tube 1 for observing the microstructure of the flame. The top is connected to the extended explosion tube 102 through a flange. Both ends of the extended explosion tube 102 are fixed with a porous metal explosion-proof mesh 8 through flanges for fixed height explosion-proof experiments.

[0042] Interchangeable base 2: Installed at the lower end of the explosion main pipe 1 via a flange. There are three types of interchangeable base 2: dust diffusion base, variable temperature reaction tank base 3, and jet base. Variable temperature reaction tank base 3 includes an inner reaction tank 301 and a PID temperature control enclosure 302 with an integrated heating module.

[0043] Replaceable top plate 4: Installed on the upper end of the explosion main pipe 1 via the support rod on the outside of the explosion main pipe 1. The replaceable top plate 4 is divided into ordinary top plate and pressure fine water mist top plate with nozzle 401 that connects to water tank and air compressor, ultrasonic fine water mist top plate that connects to ultrasonic atomizing box (water tank, air compressor and ultrasonic atomizing box are all mature existing products on the market, and will not be described in detail here), and explosion-proof fixed top plate with fixing seat 402.

[0044] Adjustable explosion-proof mechanism: The main body is the explosion-proof mesh 8, which is installed inside the explosion main pipe 1. The adjustment component includes a ring frame 7, which is a drive mechanism. It is installed above the replaceable top plate 4 and is coaxial with the explosion main pipe 1. Four screws 9 are evenly distributed on the outer circumference of the ring frame 7. The lower end extends into the interior of the explosion main pipe 1 and is rotatably connected to the explosion-proof mesh 8. The upper end is screwed into the limiting plate 901 on the outer side of the lower plate of the ring frame 7. The four screws 9 rotate simultaneously and form a limiting relationship with each other, thereby forming a vertical sliding motion, which drives the explosion-proof mesh 8 to move up and down to adjust the height.

[0045] Data acquisition unit 5: Installed on both sides of the explosion main pipe 1, it has a temperature sensor 501 and a pressure sensor 502; the data acquisition unit 5 is connected to the PLC controller, which controls the vacuuming, gas distribution, powder / spraying, ignition and data acquisition according to the preset timing sequence. The PLC controller synchronously controls the heating start and stop of the variable temperature reaction tank base 3 and the opening and closing of the fine water mist solenoid valve and the ignition signal linkage.

[0046] Among them, the upper end of the fixed base 402 is rotatably mounted with a limiting disk 901, the lower end of the limiting disk 901 is a second rotating wheel 903 which is connected to the annular groove opened at the upper end of the fixed base 402, the center of the limiting disk 901 is screwed to the screw 9, the bottom of the screw 9 is screwed with two screw sleeves, between the two screw sleeves is a limiting ring 801, between adjacent limiting rings 801 there is a height equal shim 802, the adjacent height equal shims 802 clamp and fix the explosion-proof mesh 8, and the limiting ring 801 is clearance fit with the inner wall of the explosion main pipe 1;

[0047] Furthermore, the bottom of the ring frame 7 is fixed with a first rotating wheel 701, which is rotatably connected to the coaxial annular groove opened at the upper end of the fixed seat 402. The ring frame 7 has an upper plate and a lower plate. The outer side of the lower plate has a toothed structure, which meshes with the external gear 902 on the outer side of the limiting plate 901. The outer side of the upper plate is fixed with the rotating plate 702 through the protruding rod. By rotating the rotating plate 702, the meshing connection between the lower plate and the external gear 902 drives the limiting plate 901 to rotate. At this time, the limiting plate 901 and the screw 90 generate transmission. The four screws 9 limit each other and thus slide up and down, achieving the working effect of synchronous lifting of the four screws 9.

[0048] This device also includes a pressure-type fine water mist system, consisting of a nozzle 401 installed at the lower end of the replaceable top plate 4, a solenoid valve, and an air compressor.

[0049] This device also includes an ultrasonic fine water mist system, which consists of an ultrasonic atomizing box and a spray channel in the middle of the top plate.

[0050] Example 1

[0051] Fine water mist suppressive gas-dust explosion test

[0052] S1: System preparation and airtightness verification. Start the equipment and use the pressure sensor 502 of the data acquisition unit 5 to monitor the system pressure change. Confirm that the main explosion pipe 1 and the connecting pipes are airtight and the system is working normally.

[0053] S2: Dust loading and pre-vacuuming: Place the precisely weighed combustible dust (such as coal dust) into the dust diffusion base, close all unnecessary pipeline valves, and start the vacuum system to perform vacuuming operation on the explosion main tube 1 and the extended explosion tube 102 to achieve the preset vacuum level in order to eliminate residual air interference.

[0054] S3: Combustible gas mixture preparation and mixing. Through the gas distribution module, combustible gas (such as CH4) and air are sequentially introduced into the vacuumed pipeline system according to the preset volume ratio. The inlet valve is closed, allowing the mixed gas to remain still and mix fully in the pipeline to form a uniform combustible dust-gas mixture.

[0055] S4: Pressure build-up (dust and water mist): Compressed air is input from the gas cylinder to the pressure divider tank for dust spraying and pressurized to the preset dust spraying pressure. At the same time, compressed air is input to the pressure divider tank for driving the water mist and pressurized to the preset spraying pressure.

[0056] S5: PLC timing control and test execution. Start the PLC program controller and automatically execute the following key operations according to the preset precise timing sequence:

[0057] Powder spraying: Activate the solenoid valve controlling the dust diffusion base to spray dust into the main pipeline, forming an explosive dust cloud;

[0058] Spraying: The solenoid valve of the pressure-controlled fine water mist top plate nozzle 401 is activated to spray fine water mist into the dust cloud for suppression;

[0059] Data acquisition is initiated, activating the temperature sensor 501 and pressure sensor 502 in data acquisition unit 5;

[0060] Ignition: After a set delay, an ignition signal is emitted, triggering the igniter located at the bottom of the pipe.

[0061] S6: Data recording and analysis. The PLC controller synchronously records and stores the pressure-time (Pt) and temperature-time (Tt) curve data from the data acquisition unit 5, which are used to analyze the explosion intensity, propagation speed and the suppression effect of fine water mist.

[0062] S7: Post-test cleaning After the test, open the pipe, manually wipe the residue on the inner wall, and use compressed air to thoroughly purge and clean the visible sealed square pipe (i.e., the explosion main pipe with window 101) for no less than 3 minutes. Finally, dry it with a hair dryer to prepare for subsequent tests.

[0063] Example 2

[0064] Fine water mist suppresses gas production in the reaction tank - combustible gas explosion test

[0065] S1: System preparation and airtightness verification, same as step 1 of Example 1 (standardized).

[0066] S2: Loading and pre-vacuuming of solid-liquid reactants: In the inner reaction tank 301 of the variable temperature reaction tank base 3, aluminum powder and deionized pure water are added in a precise mass ratio. All unnecessary pipeline valves are closed, and the explosion main pipe 1 and connecting pipelines are evacuated.

[0067] S3: Background combustible gas preparation and mixing. Through the gas distribution module, a preset amount of combustible gas (such as hydrogen simulant or actual combustible gas) and air are introduced into the vacuumed pipeline as background mixture gas in proportion. The valve is closed and the mixture is allowed to stand and mix.

[0068] S4: Aluminum-water reaction start-up and gas production: The heating function of the PID temperature control enclosure 302 of the variable temperature reaction tank base 3 is activated to precisely control and heat the aluminum powder-water mixture, triggering the aluminum-water reaction to continuously produce hydrogen gas. ), released into the pipeline environment;

[0069] S5: PLC timing control and test execution. After the reaction gas production reaches the preset concentration / time, the PLC program controller is started.

[0070] Spray: Open the solenoid valve of the pressure-controlled fine water mist top plate nozzle 401 to spray fine water mist;

[0071] Data acquisition initiated: Data acquisition unit 5 is activated;

[0072] Ignition: Ignition is triggered after a delay, igniting the hydrogen-air mixture in the pipeline;

[0073] S6: Data recording and analysis, recording and analyzing Pt and Tt curves, and evaluating the suppression effectiveness of fine water mist on the gas (hydrogen) explosion in the reaction tank;

[0074] S7: Clean up after the test, same as step 7 in Example 1 (standardized).

[0075] Example 3

[0076] Gas-solid two-phase explosion suppressant gas-dust explosion test

[0077] S1: System preparation and airtightness verification, same as step 1 of Example 1 (standardized).

[0078] S2: Loading of explosives and explosion suppressants: The target combustible dust (such as coal dust) is loaded into the dust diffusion base with a precise weight, and the inert powder explosion suppressant (such as ABC dry powder, sodium bicarbonate, etc.) is loaded into a separate powder explosion suppressant tank (connected to a specific powder injection pipeline).

[0079] S3: Pre-vacuum the system, close all valves, and evacuate the piping system;

[0080] S4: Combustible gas mixture preparation and mixing: Combustible gas and air are introduced in proportion through the gas distribution module, and the valve is closed to allow the mixture to stand and mix.

[0081] S5: Pressure build-up (dust and explosion suppressant): Compressed air is introduced into the pressure distribution tank of the dust diffusion base and pressurized to the required powder spraying pressure; inert gas (such as...) is introduced... The pressure vessel of the powder explosion suppressant tank is pressurized to the preset explosion suppressant spraying pressure;

[0082] S6: PLC timing control, explosion suppression and test execution, start the PLC program controller:

[0083] Pulverized coal injection: Open the dust injection solenoid valve to form a combustible dust cloud;

[0084] Inert gas-powder explosion suppressant: Open the solenoid valve that controls the explosion suppressant, and simultaneously or in a specific sequence, inject the powder explosion suppressant carried by the inert gas stream to form a gas-solid two-phase explosion suppression barrier.

[0085] Data acquisition initiated: Activate data acquisition unit 5;

[0086] Ignition: Ignition is triggered after a delay to induce a dust explosion, while the suppression effect of the explosion suppressant is evaluated and the data is recorded;

[0087] S7: Clean up after the test, same as step 7 in Example 1 (standardized).

[0088] Example 4

[0089] Propagation suppression test of gas-dust explosion under the action of explosion-proof mesh (dual-channel)

[0090] S1: System preparation and airtightness verification, same as step 1 of Example 1 (standardized).

[0091] S2: Dust loading and pre-vacuuming: Accurately weighed dust is loaded into the dust diffusion base, the valve is closed, and the pipeline system consisting of the explosion main pipe 1 and the extended explosion pipe 102 is evacuated.

[0092] S3: Combustible gas mixture preparation and mixing: Combustible gas and air are introduced in proportion through the gas distribution module, and the valve is closed to allow the mixture to stand and mix.

[0093] S4: Dust injection pressure establishment: Compressed air is input into the pressure distribution tank of the dust diffusion base and pressurized to the required dust injection pressure;

[0094] S5: PLC timing control and explosion propagation test, start the PLC program controller:

[0095] Powder spraying: Open the dust spraying solenoid valve;

[0096] Data acquisition is initiated, activating the data acquisition units 5 (especially pressure sensor 502) arranged before and after the explosion-proof net 8.

[0097] Ignition is triggered at the bottom of the pipe;

[0098] S6: Recording and analyzing explosion-proof performance data, focusing on recording and comparing the pressure peaks before and after the explosion-proof mesh 8. , rate of pressure rise ( ) and temperature changes, etc., to quantitatively evaluate the blocking effect of the explosion-proof mesh 8 on the explosion wave;

[0099] S7: Same as step 7 in Example 1 (standardized).

[0100] Example 5

[0101] Combustible gas / inert gas jet ignition / explosion suppression test

[0102] S1: System preparation and airtightness verification, same as step 1 of Example 1 (standardized).

[0103] S2: Pre-vacuuming of the pipeline, evacuating the main explosion pipe 1;

[0104] S3: Background atmosphere establishment. Through the gas distribution module, air is introduced into the pipeline to a specific sub-atmospheric pressure (required vacuum level) to simulate specific environmental conditions.

[0105] S4: The working fluid pressure is established, which will propel the combustible gas (such as...) The gas is fed from the cylinder into a dedicated jet pressure vessel and pressurized to the set combustible gas jet pressure; or / and an inert gas (such as...) is introduced into the gas. The gas is input into a dedicated jet pressure tank and pressurized to the set inert gas jet pressure;

[0106] S5: PLC timing control and jet test execution, start the PLC program controller:

[0107] Combustible gas jet / inert gas jet: (Core difference) Open the corresponding jet control solenoid valve to inject combustible gas (for ignition research or explosion enhancement) or inert gas (for explosion suppression research) into the pipeline at high speed.

[0108] Data acquisition is initiated, activating data acquisition unit 5;

[0109] Ignition (for combustible gas jets): Ignition is triggered downstream of the jet or at a specific location to study the jet's ignition characteristics or enhance the explosion; (for inert gas jets): Ignition is triggered in advance or simultaneously at a preset location within the pipeline to study the inert gas jet's effect on suppressing the explosion and record the data.

[0110] S6: Data recording and analysis, recording Pt and Tt curves, and analyzing the influence mechanism of jet characteristics (velocity, concentration) on explosion initiation, propagation or suppression;

[0111] S7: Post-test cleaning: Same as step 7 in Example 1 (standardized).

[0112] In the description of this specification, references to terms such as "an embodiment," "example," and "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0113] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A gas-liquid-solid three-phase vertical tube explosion test apparatus, characterized in that, include: The main explosive tube (1) and the detachably connected extended explosive tube (102) are provided with a viewing window (101) on the side wall of the main explosive tube (1). Interchangeable base (2) is located at the lower end of the explosion main tube (1). The interchangeable base (2) is provided with a dust diffusion base and a variable temperature reaction pool base (3). The variable temperature reaction pool base (3) includes an inner reaction pool (301) and a temperature control enclosure area (302). Replaceable top plate (4), located at the upper end of the explosion main pipe (1), includes a regular top plate and a pressure fine water mist top plate with nozzle (401) and an explosion-proof fixed top plate with a fixing seat (402); The adjustable height explosion-proof mechanism includes a ring frame (7) coaxial with the explosion main pipe (1) and located above the replaceable top plate (4), and also includes an explosion-proof mesh (8) inside the explosion main pipe (1). Screws (9) are evenly distributed around the outer circumference of the ring frame (7). The lower end of the screws (9) is rotatably connected to the explosion-proof mesh (8). The screws (9) rotate with the rotation of the ring frame (7). The data acquisition units (5) located on both sides of the explosion main tube (1) include a temperature sensor (501) and a pressure sensor (502).

2. The gas-liquid-solid three-phase vertical tube explosion test apparatus according to claim 1, characterized in that: The interchangeable base (2) is connected to the explosion main pipe (1) via a flange, and the temperature control enclosure (302) of the variable temperature reaction tank base (3) integrates a heating module.

3. The gas-liquid-solid three-phase vertical tube explosion test apparatus according to claim 1, characterized in that: The replaceable top plate (4) is connected to the ultrasonic fine water mist top plate and the pressure fine water mist top plate is connected to the water tank and the air compressor.

4. The gas-liquid-solid three-phase vertical tube explosion test apparatus according to claim 1, characterized in that: The top of the screw (9) is provided with a limiting plate (901) by screwing. The bottom of the limiting plate (901) is fixed with a second rotating wheel (903) and a fixed seat (402) for rotational connection. The screw (9) clamps and fixes the explosion-proof net (8) through adjacent equal height pads (802) at the bottom end. The adjacent equal height pads (802) are provided with a limiting ring (801) on one side away from each other, which is in clearance fit with the inner wall of the explosion main pipe (1).

5. The gas-liquid-solid three-phase vertical tube explosion test apparatus according to claim 1, characterized in that: The bottom of the ring frame (7) is fixed with a first rotating wheel (701) and a fixed seat (402) rotatably connected. The outer side of the lower plate of the ring frame (7) meshes with the outer gear (902) of the outer side of the limiting plate (901). The upper side of the ring frame (7) is fixed with a rotating plate (702). The rotating plate (702) drives the limiting plate (901) through the ring frame (7) to realize the synchronous lifting of the four screws (9).

6. The gas-liquid-solid three-phase vertical tube explosion test apparatus according to claim 1, characterized in that: It includes a pressure-type fine water mist system, which consists of a nozzle (401), a solenoid valve and an air compressor, and an ultrasonic fine water mist system, which consists of an ultrasonic atomizing box and a top plate spray channel.

7. The gas-liquid-solid three-phase vertical tube explosion test apparatus according to claim 1, characterized in that: The data acquisition unit (5) is connected to the PLC controller, which controls vacuuming, gas distribution, powder / spraying, ignition and data acquisition according to a preset timing sequence.

8. The gas-liquid-solid three-phase vertical tube explosion test apparatus according to claim 7, characterized in that: The PLC controller synchronously controls the heating start and stop of the variable temperature reaction tank base (3) and the opening and closing of the fine water mist solenoid valve in conjunction with the ignition signal.

9. The gas-liquid-solid three-phase vertical tube explosion test apparatus according to claim 1, characterized in that: The extended explosion tube (102) has a porous metal explosion-proof mesh (8) fixed at both ends of the flange for use in fixed height explosion-proof experiments.

10. The gas-liquid-solid three-phase vertical tube explosion test apparatus according to claim 1, characterized in that: The viewing window (101) is made of quartz tempered glass and is embedded in the side wall of the explosion main tube (1) for observing the microstructure of the flame.

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