A barrier blast material testing system

Abstract

The application relates to the technical field of barrier material testing, and discloses a barrier explosion material testing system which comprises a gas distribution mechanism, a dust spraying mechanism, an ignition mechanism, a first stage, a second stage, a third stage and a data acquisition mechanism; the gas distribution mechanism is connected with the first stage and the third stage; the first stage is also used for placing accumulated dust; the dust spraying mechanism is connected with the first stage and the third stage respectively and is used for injecting flammable liquid, combustible dust cloud or aerosol into the first stage and the third stage; the ignition mechanism is used for igniting combustible gas, flammable liquid, combustible dust cloud, aerosol or accumulated dust in the first stage; a barrier explosion material layer is arranged in the second stage; the data acquisition mechanism is connected with the first stage and the third stage respectively and is used for acquiring image, pressure and temperature data in the first stage and the third stage; and the application is convenient for evaluating the efficiency of the barrier explosion material layer.

Description

Technical Field

[0001] This invention relates to the field of barrier material testing technology, and in particular to a test system for barrier explosion materials. Background Technology

[0002] In recent years, the application of hazardous chemicals such as metal dust, flammable and explosive gases, and aerosols has become increasingly widespread. However, during daily production, transportation, storage, and use, hazardous chemical explosion accidents occur frequently, resulting in a large number of casualties and economic and property losses, and seriously endangering social stability.

[0003] Understanding the flame propagation mechanism of combustion and explosion of hazardous chemicals and their development patterns under different influencing factors, and formulating an efficient combustion and explosion prevention system, is of great theoretical and practical significance for elucidating the causes of hazardous chemical explosion accidents, reducing the disasters caused by hazardous chemical combustion and explosion, and improving the safe production conditions of hazardous chemical enterprises.

[0004] Accidental combustion and explosion of hazardous chemicals can generate high-temperature flames and shock waves. Explosion-proof materials can effectively prevent the flames and shock waves from spreading in all directions, thereby reducing secondary injuries to operators or causing more serious combustion and explosion problems. They can greatly reduce or even eliminate the injuries suffered by operators. Therefore, the performance of explosion-proof materials is crucial. Thus, there is an urgent need for a system that can accurately test the explosion-proof performance of materials. Summary of the Invention

[0005] The purpose of this invention is to provide a testing system for explosion-proof materials, which aims to solve or improve at least one of the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention provides the following solution: The present invention provides

[0007] A test system for explosion-proof materials includes a gas distribution mechanism, a dust atomization mechanism, an ignition mechanism, a first stage, a second stage, a third stage, and a data acquisition mechanism.

[0008] The gas distribution mechanism is connected to the first stage and the third stage and is used to inject combustible gas into the first stage and the third stage;

[0009] The first stage is also used to place accumulated dust;

[0010] The dust atomizing mechanism is connected to the first stage and the third stage respectively, and is used to inject flammable liquid, combustible dust cloud or aerosol into the first stage and the third stage.

[0011] The ignition mechanism is connected to the first stage and is used to ignite the combustible gas, flammable liquid, combustible dust cloud, aerosol or accumulated dust in the first stage.

[0012] The second stage is located between the first stage and the third stage, and an explosion-proof material layer is provided in the second stage;

[0013] The data acquisition mechanism is connected to the first stage and the third stage respectively, and is used to acquire image, pressure and temperature data in the first stage and the third stage.

[0014] Optionally, the gas distribution mechanism includes a gas supply device and a gas pipeline. The gas pipeline is connected to the first stage and is equipped with a vacuum pump interface, a gas distribution sensor, and a gas distribution sensor protection valve. The vacuum pump interface is connected to the gas supply device.

[0015] Optionally, a manual pressure relief valve may also be installed on the gas pipeline.

[0016] Optionally, the ignition mechanism includes a pulse ignition device and an ignition electrode connected to the pulse ignition device, the ignition electrode being connected to the first stage.

[0017] Optionally, the ignition mechanism may further include a dust accumulation ignition interface disposed on the first stage.

[0018] Optionally, the data acquisition mechanism includes multiple sensor interfaces, which are respectively disposed on the first stage, the second stage, and the third stage. The sensor interfaces can be used to install a first pressure sensor or a temperature sensor.

[0019] Optionally, the data acquisition mechanism further includes multiple cameras, which correspond to the first stage and the third stage, and each of the first stage and the third stage is provided with an observation window.

[0020] Optionally, the dust atomizing mechanism includes a pair of storage tanks and a conveying pipeline. The conveying pipeline is connected to a diffuser. The pair of diffusers are respectively installed in the first stage and the third stage. Each pair of storage tanks is equipped with a second pressure sensor and an opening valve.

[0021] Optionally, a first enclosure is provided at one end of the second stage near the first stage, and a fixed flange is provided at one end of the second stage near the third stage. Multiple adjusting rods are provided on the fixed flange, and a second enclosure is provided at one end of the multiple adjusting rods facing the first stage. The explosion-proof material layer is provided inside both the first enclosure and the second enclosure.

[0022] Optionally, both the first stage and the third stage are equipped with rupture discs.

[0023] This invention discloses the following technical effects: By injecting combustible gas into the first and third stages through a gas distribution mechanism, or by placing accumulated dust in the first stage, or by injecting flammable liquid, combustible dust cloud, or aerosol into the first and third stages through a dust atomization mechanism, the explosion test is controlled by an ignition mechanism, and the image, pressure, and temperature data within the first and third stages are acquired by a data acquisition mechanism. This enables the testing system to perform explosion flame propagation, containment, and explosion suppression tests on combustible gas, flammable liquid, combustible dust cloud, aerosol, and accumulated dust. The explosion containment effectiveness of the explosion-proof material layer is evaluated using the image, pressure, and temperature data obtained from the test. Attached Figure Description

[0024] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0025] Figure 1 This is a front view of the present invention;

[0026] Figure 2 This is a top view of the present invention;

[0027] Figure 3 This is a schematic diagram of the second stage structure of the present invention;

[0028] Figure 4 This is a schematic diagram of the second stage structure of Embodiment 2 of the present invention.

[0029] In the diagram: 1. First stage; 2. Second stage; 3. Third stage; 4. Barrier material layer; 5. Gas supply device; 6. Vacuum pump interface; 7. Gas distribution sensor; 8. Gas distribution sensor protection valve; 9. Manual pressure relief valve; 10. Pulse ignition device; 11. Ignition electrode; 12. Accumulated dust ignition interface; 13. Sensor interface; 14. First pressure sensor; 15. Temperature sensor; 16. Observation window; 17. Storage tank; 18. Diffuser; 19. Second pressure sensor; 20. Opening valve; 21. First enclosure; 22. Fixed flange; 23. Adjusting rod; 24. Second enclosure; 25. Rupture disc; 26. Square clamp; 27. Pressure cap; 28. Barrier; 29. ​​Processing unit. Detailed Implementation

[0030] 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.

[0031] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Example 1, referring to Figures 1-3 This invention provides

[0033] A test system for explosion-proof materials includes a gas distribution mechanism, a dust atomization mechanism, an ignition mechanism, a first stage 1, a second stage 2, a third stage 3, and a data acquisition mechanism.

[0034] The gas distribution mechanism is connected to the first stage 1 and the third stage 3 and is used to inject combustible gas into the first stage 1 and the third stage 3;

[0035] The first phase 1 is also used to store accumulated dust.

[0036] The dust atomizing mechanism is connected to the first stage 1 and the third stage 3 respectively, and is used to inject flammable liquid, combustible dust cloud or aerosol into the first stage 1 and the third stage 3.

[0037] The ignition mechanism is connected to the first stage 1 and is used to ignite the combustible gas, flammable liquid, combustible dust cloud, aerosol or accumulated dust in the first stage 1.

[0038] The second stage 2 is set between the first stage 1 and the third stage 3, and an explosion-proof material layer 4 is set in the second stage 2.

[0039] The data acquisition mechanism is connected to both Phase 1 and Phase 3 to acquire image, pressure, and temperature data within Phase 1 and Phase 3.

[0040] Combustible gas is injected into the first stage (1) and the third stage (3) through a gas distribution mechanism, or accumulated dust is placed in the first stage (1), or flammable liquid, combustible dust cloud, or aerosol is injected into the first stage (1) and the third stage (3) through a dust atomization mechanism. An ignition mechanism controls the explosion test, and a data acquisition mechanism acquires images, pressure, and temperature data within the first stage (1) and the third stage (3). This allows the testing system to perform explosion flame propagation and explosion suppression tests on combustible gas, flammable liquid, combustible dust cloud, aerosol, and accumulated dust. The explosion-proof effectiveness of the explosion-proof material layer is evaluated based on the images, pressure, and temperature data obtained from the test.

[0041] Furthermore, it also includes a processing unit 29, which, together with the gas distribution mechanism, ignition mechanism, data acquisition mechanism, and dust atomization mechanism, is used to control the operation of the entire test system and to analyze the effectiveness of the explosion-proof material layer 4.

[0042] Furthermore, the first stage 1 is a square pipe with an inner cross-section of 140mm×140mm, a length of 700mm / segment, and is made of stainless steel.

[0043] Furthermore, the second stage 2 is a circular pipe with an inner cross-section of ￠100mm, consisting of one section, each 500mm long, and made of stainless steel.

[0044] Furthermore, the third stage 3 consists of square pipes with an inner cross-section of 140mm × 140mm, a length of 700mm per segment, and made of stainless steel.

[0045] Furthermore, the gas distribution mechanism has the following gas distribution channels: 3 channels (2 sample channels + 1 air channel), gas distribution accuracy: 0.1%; gas distribution pressure measurement range: 0~100kPa, accuracy: 0.1kPa.

[0046] Furthermore, combustible gases include methane, hydrogen, etc.; flammable liquids include petroleum, etc.; combustible dust clouds include metals, mixed metal dusts, organic dusts, etc.; accumulated dust includes metals, mixed metal accumulated dusts, explosive accumulated dusts, etc.; aerosols include ethanol aerosols, liquid propane aerosols, etc.

[0047] The scheme is further optimized. The gas distribution mechanism includes a gas supply device 5 and a gas pipeline. The gas pipeline is connected to the first stage 1. The gas pipeline is equipped with a vacuum pump interface 6, a gas distribution sensor 7 and a gas distribution sensor protection valve 8. The vacuum pump interface 6 is connected to the gas supply device 5.

[0048] The gas supply device 5 preferably adopts the invention patent: device and operating method for measuring the limiting oxygen concentration parameter of combustible gas, publication number CN107247126B.

[0049] To further optimize the design, a manual pressure relief valve 9 is also installed on the gas pipeline.

[0050] The scheme is further optimized. The ignition mechanism includes a pulse ignition device 10 and an ignition electrode 11 connected to the pulse ignition device 10. The ignition electrode 11 is connected to the first stage 1.

[0051] Ignition electrode 11 is for high-energy electric spark ignition: ignition energy: 1-300J, pulse voltage: 15KV, electrode spacing: 3-6mm or for pyrotechnic ignition: ignition energy: 10J-10KJ

[0052] The ignition mechanism is further optimized by including a dust accumulation ignition interface 12 located on the first stage 1.

[0053] The scheme is further optimized. The data acquisition mechanism includes multiple sensor interfaces 13, which are respectively set on the first stage 1, the second stage 2 and the third stage 3. The sensor interfaces 13 can be used to install the first pressure sensor 14 or the temperature sensor 15.

[0054] The first stage 1 is equipped with a first pressure sensor 14 and a temperature sensor 15, and the third stage 3 is also equipped with a first pressure sensor 14 and a temperature sensor 15.

[0055] To further optimize the scheme, the data acquisition mechanism also includes multiple cameras, corresponding to Phase 1 and Phase 3, with observation windows 16 respectively installed on Phase 1 and Phase 3. The observation windows 16 are high-precision quartz optical windows. One observation window 16 is installed before and after Phase 1 and Phase 3, respectively. The two observation windows 16 are strictly parallel, with a light-transmitting area of ​​500mm in length and 120mm in width.

[0056] The scheme is further optimized. The dust atomization mechanism includes a pair of storage tanks 17 and a conveying pipeline. The conveying pipeline is connected to a diffuser 18. The pair of diffusers 18 are respectively set in the first stage 1 and the third stage 3. A second pressure sensor 19 and an opening valve 20 are set on each pair of storage tanks 17.

[0057] Diffuser 20 pressure: 0~2.1MPa (absolute pressure).

[0058] The scheme is further optimized. A first enclosure 21 is set at the end of the second stage 2 that is close to the first stage 1. A fixed flange 22 is set at the end of the second stage 2 that is close to the third stage 3. Multiple adjusting rods 23 are set on the fixed flange 22. A second enclosure 24 is set at the end of the multiple adjusting rods 23 that faces the first stage 1. An explosion-proof material layer 4 is set inside both the first enclosure 21 and the second enclosure 24.

[0059] The scheme was further optimized, with rupture discs 25 installed in both Phase 1 and Phase 3.

[0060] Example 2, refer to Figure 4 The difference between this embodiment and embodiment 1 is that the second stage 2 is replaced by a square clamp 26. The square clamp 26 has multiple layers of explosion-proof material 4 stacked inside and fixed by a pressure cap 27. Multiple baffles 28 are provided inside the multiple layers of explosion-proof material 4.

[0061] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0062] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A testing system for explosion-proof materials, characterized in that, It includes a gas distribution mechanism, a dust atomization mechanism, an ignition mechanism, a first stage (1), a second stage (2), a third stage (3), and a data acquisition mechanism; The gas distribution mechanism is connected to the first stage (1) and the third stage (3) and is used to inject combustible gas into the first stage (1) and the third stage (3); The first stage (1) is also used to place accumulated dust; The dust atomizing mechanism is connected to the first stage (1) and the third stage (3) respectively, and is used to inject flammable liquid, combustible dust cloud or aerosol into the first stage (1) and the third stage (3); The ignition mechanism is connected to the first stage (1) and is used to ignite the combustible gas, flammable liquid, combustible dust cloud, aerosol or accumulated dust in the first stage (1). The second stage (2) is set between the first stage (1) and the third stage (3), and an explosion-proof material layer (4) is provided in the second stage (2); The data acquisition mechanism is connected to the first stage (1) and the third stage (3) respectively, and is used to acquire image, pressure and temperature data in the first stage (1) and the third stage (3); The second stage (2) is provided with a first enclosure (21) at one end near the first stage (1), and a fixed flange (22) is provided at one end near the third stage (3). The fixed flange (22) is provided with a plurality of adjusting rods (23). The plurality of adjusting rods (23) are provided with a second enclosure (24) at one end facing the first stage (1). The explosion-proof material layer (4) is provided inside both the first enclosure (21) and the second enclosure (24).

2. The explosion-proof material testing system according to claim 1, characterized in that: The gas distribution mechanism includes a gas supply device (5) and a gas pipeline. The gas pipeline is connected to the first stage (1). The gas pipeline is equipped with a vacuum pump interface (6), a gas distribution sensor (7), and a gas distribution sensor protection valve (8). The vacuum pump interface (6) is connected to the gas supply device (5).

3. The explosion-proof material testing system according to claim 2, characterized in that: The gas pipeline is also equipped with a manual pressure relief valve (9).

4. The explosion-proof material testing system according to claim 1, characterized in that: The ignition mechanism includes a pulse ignition device (10) and an ignition electrode (11) connected to the pulse ignition device (10), and the ignition electrode (11) is connected to the first stage (1).

5. The explosion-proof material testing system according to claim 1, characterized in that: The ignition mechanism also includes a dust accumulation ignition interface (12) disposed on the first stage (1).

6. The explosion-proof material testing system according to claim 1, characterized in that: The data acquisition mechanism includes multiple sensor interfaces (13), which are respectively disposed on the first stage (1), the second stage (2) and the third stage (3). The sensor interfaces (13) can be used to install a first pressure sensor (14) or a temperature sensor (15).

7. The explosion-proof material testing system according to claim 1, characterized in that: The data acquisition mechanism also includes multiple cameras, which correspond to the first stage (1) and the third stage (3), and observation windows (16) are respectively provided on the first stage (1) and the third stage (3).

8. The explosion-proof material testing system according to claim 1, characterized in that: The dust atomizing mechanism includes a pair of storage tanks (17) and a conveying pipeline. The conveying pipeline is connected to a diffuser (18). The pair of diffusers (18) are respectively installed in the first stage (1) and the third stage (3). The pair of storage tanks (17) are each equipped with a second pressure sensor (19) and an opening valve (20).

9. The explosion-proof material testing system according to claim 1, characterized in that: Both the first stage (1) and the third stage (3) are equipped with rupture discs (25).

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