Explosion blocking material testing system

Abstract

The invention 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 atomization 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; accumulated dust is also placed in the first stage; the dust spraying atomization mechanism is connected with the first stage and the third stage and is used for injecting flammable liquid, flammable 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; an anti-explosion material layer is arranged in the second stage; the data acquisition mechanism is connected with the first stage and the third stage and is used for acquiring image, pressure and temperature data in the first stage and the third stage, and the efficiency of the anti-explosion material layer can be evaluated conveniently.

Description

Technical Field

[0001] The invention relates to the technical field of barrier material testing, and in particular to an explosion barrier material testing system. Background Art

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

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

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

[0005] The object of the present invention is to provide an explosion-proof material testing system, aiming to solve or improve at least one of the above-mentioned technical problems.

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

[0007] An explosion-proof material testing system includes a gas distribution mechanism, a dust spraying atomization mechanism, an ignition mechanism, a first stage, a second stage, a third stage and a data acquisition mechanism;

[0008] The valve 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 spraying atomization 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 arranged between the first stage and the third stage, and an explosion-proof material layer is arranged in the second stage;

[0013] The data acquisition mechanism is connected to the first stage and the third stage respectively, and is used to obtain the 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 a vacuum pump interface, a gas distribution sensor and a gas distribution sensor protection valve are provided on the gas pipeline, and the vacuum pump interface is connected to the gas supply device.

[0015] Optionally, a manual pressure relief valve is also provided on the gas pipeline.

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

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

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

[0019] Optionally, the data acquisition mechanism further includes a plurality of cameras, the plurality of cameras correspond to the first stage and the third stage, and observation windows are respectively provided on the first stage and the third stage.

[0020] Optionally, the dust spray atomization mechanism includes a pair of storage tanks and a delivery pipeline, the delivery pipeline is connected to a diffuser, the pair of diffusers are respectively arranged in the first stage and the third stage, and the pair of storage tanks are each provided with a second pressure sensor and an opening valve.

[0021] Optionally, a first enclosure is provided at one end of the second stage close to the first stage, a fixed flange is provided at one end of the second stage close to the third stage, a plurality of adjustment rods are provided on the fixed flange, a second enclosure is provided at one end of the plurality of adjustment rods toward the first stage, and the explosion-proof material layer is provided in both the first enclosure and the second enclosure.

[0022] Optionally, bursting discs are provided on both the first stage and the third stage.

[0023] The present invention discloses the following technical effects: a combustible gas is injected into the first stage and the third stage through a valve mechanism, or accumulated dust is placed in the first stage, or a flammable liquid, a combustible dust cloud or an aerosol is injected into the first stage and the third stage through a dust spraying atomization mechanism, an ignition mechanism controls the explosion test, and a data acquisition mechanism obtains images, pressure and temperature data in the first stage and the third stage, so that the test system can realize the explosion flame propagation, barrier explosion suppression test of combustible gas, flammable liquid, combustible dust cloud, aerosol and accumulated dust, and the explosion barrier performance of the explosion barrier material layer is evaluated through the image, pressure and temperature data obtained in the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

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

[0026] Figure 2 A top view of the present invention;

[0027] Figure 3 It 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 Example 2 of the present invention.

[0029] In the figure: 1. First stage; 2. Second stage; 3. Third stage; 4. Explosion-proof 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. Open valve; 21. First enclosure; 22. Fixed flange; 23. Adjustment rod; 24. Second enclosure; 25. Bursting disc; 26. Square clamp; 27. Pressure cover; 28. Partition; 29. ​​Processing unit. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Example 1, reference Figure 1-Figure 3 The present invention provides

[0033] A flameproof material testing system, comprising a gas distribution mechanism, a dust spraying atomization mechanism, an ignition mechanism, a first stage 1, a second stage 2, a third stage 3 and a data acquisition mechanism;

[0034] The valve 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 stage 1 is also used to place accumulated dust;

[0036] The dust spraying 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 arranged between the first stage 1 and the third stage 3, and an explosion-proof material layer 4 is arranged in the second stage 2;

[0039] The data acquisition mechanism is connected to the first stage 1 and the third stage 3 respectively, and is used to obtain the image, pressure and temperature data in the first stage 1 and the third stage 3.

[0040] Inject flammable gas into the first stage 1 and the third stage 3 through the valve mechanism, or place accumulated dust in the first stage 1, or inject flammable liquid, flammable dust cloud or aerosol into the first stage 1 and the third stage 3 through the dust spraying atomization mechanism. The explosion test is controlled by the ignition mechanism, and the image, pressure and temperature data in the first stage 1 and the third stage 3 are obtained by the data acquisition mechanism, so that the test system can realize the explosion flame propagation, barrier explosion suppression test of flammable gas, flammable liquid, flammable dust cloud, aerosol and accumulated dust, and evaluate the barrier explosion performance of the barrier explosion material layer through the image, pressure and temperature data obtained in the test

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

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

[0043] Furthermore, the second stage 2 is a circular pipe with an inner cross-section of ￠100mm, 1 section, 500mm / section long, and made of stainless steel.

[0044] Furthermore, the third stage 3 is a square pipe with an inner section of 140 mm×140 mm, a length of 700 mm / section, and a material of stainless steel.

[0045] Furthermore, the number of gas distribution channels in the gas distribution mechanism: 3-channel gas distribution (2-channel sample + 1-channel air), 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 metal, mixed metal dust, organic dust, etc.; accumulated dust includes metal, mixed metal accumulated dust, explosive accumulated dust, etc.; aerosols include ethanol aerosols, liquid propane aerosols, etc.

[0047] According to a further optimization scheme, the gas distribution mechanism includes a gas supply device 5 and a gas pipeline, the gas pipeline is connected to the first stage 1, and a vacuum pump interface 6, a gas distribution sensor 7 and a gas distribution sensor protection valve 8 are provided on the gas pipeline, and the vacuum pump interface 6 is connected to the gas supply device 5.

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

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

[0050] According to a further optimized solution, the ignition mechanism comprises 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 .

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

[0052] According to a further optimized solution, the ignition mechanism further comprises a dust accumulation ignition interface 12 arranged on the first stage 1 .

[0053] According to a further optimization scheme, the data acquisition mechanism includes a plurality of sensor interfaces 13 , which are respectively arranged 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 .

[0054] A first pressure sensor 14 and a temperature sensor 15 are arranged on the first stage 1 , and a first pressure sensor 14 and a temperature sensor 15 are also arranged on the third stage 3 .

[0055] Further optimizing the scheme, the data acquisition mechanism also includes a plurality of cameras, the plurality of cameras correspond to the first stage 1 and the third stage 3, and the first stage 1 and the third stage 3 are respectively provided with an observation window 16. The observation window 16 is a high-precision quartz optical window. An observation window 16 is respectively provided in front and behind the first stage 1 and the third stage 3, and the two observation windows 16 are strictly parallel, and the light-transmitting area is 500 mm long and 120 mm wide.

[0056] To further optimize the solution, the dust spray atomization mechanism includes a pair of storage tanks 17 and a delivery pipeline, the delivery pipeline is connected to a diffuser 18, the pair of diffusers 18 are respectively arranged in the first stage 1 and the third stage 3, and the pair of storage tanks 17 are both provided with a second pressure sensor 19 and an opening valve 20.

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

[0058] To further optimize the solution, a first enclosure 21 is provided at one end of the second stage 2 close to the first stage 1, a fixed flange 22 is provided at one end of the second stage 2 close to the third stage 3, a plurality of adjustment rods 23 are provided on the fixed flange 22, a second enclosure 24 is provided at one end of the plurality of adjustment rods 23 toward the first stage 1, and explosion-proof material layers 4 are provided in both the first enclosure 21 and the second enclosure 24.

[0059] To further optimize the solution, bursting discs 25 are provided on both the first stage 1 and the third stage 3.

[0060] Example 2, reference Figure 4 The difference between this embodiment and embodiment 1 is that the second stage 2 is replaced by a square clamp 26, multiple layers of explosion-proof material layers 4 are stacked in the square clamp 26 and fixed by a pressure cover 27, and multiple barriers 28 are arranged in the multiple layers of explosion-proof material layers 4.

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

[0062] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. An explosion-proof material testing system, characterized in that: It includes a valve mechanism, a dust spraying and atomizing mechanism, an ignition mechanism, a first stage (1), a second stage (2), a third stage (3) and a data acquisition mechanism; The valve 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 spraying atomization 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 arranged between the first stage (1) and the third stage (3), and an explosion-proof material layer (4) is arranged 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).

2. The explosion-proof material testing system according to claim 1, characterized in that: The gas distribution mechanism comprises a gas supply device (5) and a gas pipeline, wherein the gas pipeline is connected to the first stage (1), and a vacuum pump interface (6), a gas distribution sensor (7) and a gas distribution sensor protection valve (8) are provided on the gas pipeline, and 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 provided with a manual pressure relief valve (9).

4. The explosion-proof material testing system according to claim 1, characterized in that: The ignition mechanism comprises 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 further comprises a dust accumulation ignition interface (12) arranged on the first stage (1).

6. The explosion-proof material testing system according to claim 1, characterized in that: The data acquisition mechanism comprises a plurality of sensor interfaces (13), wherein the plurality of sensor interfaces (13) are respectively arranged on the first stage (1), the second stage (2) and the third stage (3), and 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 further comprises a plurality of cameras, wherein the plurality of cameras correspond to the first stage (1) and the third stage (3), and observation windows (16) are respectively arranged 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 spraying atomization mechanism comprises a pair of material storage tanks (17) and a conveying pipeline, wherein the conveying pipeline is connected to a diffuser (18), the pair of diffusers (18) are respectively arranged in the first stage (1) and the third stage (3), and the pair of material storage tanks (17) are both provided 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: A first enclosure (21) is arranged at one end of the second stage (2) close to the first stage (1), a fixing flange (22) is arranged at one end of the second stage (2) close to the third stage (3), a plurality of adjustment rods (23) are arranged on the fixing flange (22), a second enclosure (24) is arranged at one end of the plurality of adjustment rods (23) facing the first stage (1), and the explosion-proof material layer (4) is arranged in both the first enclosure (21) and the second enclosure (24).

10. The explosion-proof material testing system according to claim 1, characterized in that: The first stage (1) and the third stage (3) are both provided with bursting discs (25).

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