Explosion experiment system

Abstract

The present application provides an explosion experiment system, which relates to the field of explosion experiments and includes: an explosion container; a mixed gas source for providing a mixed gas and communicating with the explosion container to introduce the mixed gas into the explosion container; a gas component detection device, the mixed gas source is communicated with the gas component detection device, and the gas component detection device is used to detect the proportion of each gas component in the mixed gas. By providing a gas component detection device communicated with the mixed gas source to detect the proportion of gas components in the mixed gas, the present application solves to a certain extent the technical problem in the prior art that the mixing concentration of multi-component gases in the explosion experiment process lacks precise control, which easily leads to large errors in experimental data.

Description

Technical Field

[0001] This application relates to the field of explosion experiments, and more particularly to an explosion experiment system. Background Art

[0002] The explosion experiment devices in the prior art usually need to conduct experiments on mixed gases including multiple components. However, during the experiment, the mixing concentration of the multi-component gas lacks precise control, which easily leads to large errors in the experimental data. Summary of the Invention

[0003] In view of this, this application provides an explosion experiment system, aiming to solve, to a certain extent, the technical problem in the prior art that during the explosion experiment process, the mixing concentration of multi-component gases lacks precise control, which easily leads to large errors in the experimental data.

[0004] This application provides an explosion experiment system, which includes:

[0005] An explosion container;

[0006] A mixed gas source for providing mixed gas and communicating with the explosion container to introduce the mixed gas into the explosion container;

[0007] A gas component detection device, the mixed gas source is communicated with the gas component detection device, and the gas component detection device is used to detect the proportion of each gas component in the mixed gas.

[0008] Preferably, the mixed gas source includes a first gas mixing mechanism, and the first gas mixing mechanism includes:

[0009] A pressure vessel, the pressure of the gas output by the pressure vessel can be adjusted;

[0010] A gas mixing chamber and a third path, the gas mixing chamber is communicated with the pressure vessel through the third path;

[0011] A first flow member disposed in the third path and used to display and control the flow rate of the gas flowing through the first flow member;

[0012] A second valve member disposed in the third path for connecting or disconnecting the pressure vessel and the gas mixing chamber.

[0013] Preferably, the first gas mixing mechanism further includes a gas mixing spiral tube, the gas mixing spiral tube is formed in a spiral shape and communicated with the gas mixing chamber, and a passivation layer for preventing the gas mixing spiral tube from being corroded is formed on the inner wall of the gas mixing spiral tube.

[0014] Preferably, the first gas mixing mechanism further includes:

[0015] The first path connects the gas mixing spiral tube and the gas component detection device;

[0016] The second path connects the gas mixing spiral tube and the combustion explosion container;

[0017] The first valve member or the first valve assembly is disposed at the intersection of the first path and the second path and is used to control: the opening of the first path and the opening of the second path, the opening of the first path and the closing of the second path, the closing of the first path and the opening of the second path, and the closing of the first path and the closing of the second path;

[0018] The first one-way valve member is disposed in the second path to restrict the gas in the combustion explosion container from flowing to the gas mixing spiral tube.

[0019] Preferably, the gas mixing chamber is formed with a cavity portion, the cavity portion is formed in a spherical segment shape, and a plurality of the pressure vessels communicate with the cavity portion through the bottom surface of the spherical segment-shaped cavity portion; the gas mixing spiral tube communicates with the cavity portion through the arc surface of the spherical segment-shaped cavity portion;

[0020] The junction of the bottom surface and the arc surface is formed as a rounded corner.

[0021] Preferably, the mixed gas source further includes a second gas mixing mechanism, and the second gas mixing mechanism includes:

[0022] The vaporization chamber is used to accommodate the mixed liquid and vaporize the mixed liquid into mixed vapor;

[0023] The gas equalizing chamber communicates with the vaporization chamber and is used to stabilize the flow rate of the mixed vapor;

[0024] The fourth path connects the gas equalizing chamber and the gas component detection device.

[0025] Preferably, the second gas mixing mechanism further includes:

[0026] The second flow member is disposed in the fourth path and is used to display and control the flow rate of the mixed vapor flowing through the second flow member;

[0027] The fifth path connects the gas equalizing chamber and the combustion explosion container;

[0028] The third valve member or the third valve assembly is disposed at the intersection of the fourth path and the fifth path and is used to control: the opening of the fourth path and the opening of the fifth path, the opening of the fourth path and the closing of the fifth path, the closing of the fourth path and the opening of the fifth path, and the closing of the fourth path and the closing of the fifth path;

[0029] A second one-way valve member is disposed in the fifth path to restrict the flow of gas in the combustion explosion container to the gas equalizing chamber.

[0030] Preferably, the gas equalizing chamber includes:

[0031] A gas equalizing fan blade is disposed at the connection between the gas equalizing chamber and the gasification chamber, and is used to make the mixed vapor mix sufficiently and make the flow rate of the mixed vapor stable.

[0032] Preferably, the gasification chamber includes:

[0033] A containing and heating part is used to contain the mixed liquid and heat the mixed liquid;

[0034] A first plate member is disposed above the containing and heating part. One end of the first plate member in the first direction and the inner part of the gasification chamber jointly define a first preset gap;

[0035] A second plate member is disposed above the first plate member and on the side opposite to the first preset gap. The second plate member and the inner part of the gasification chamber jointly define a second preset gap in the first direction.

[0036] Preferably, the combustion explosion experiment system further includes a vacuum extraction device, and the vacuum extraction device is communicated with the combustion explosion container.

[0037] By providing a gas component detection device communicated with the mixed gas source to detect the proportion of gas components in the mixed gas, this application solves to a certain extent the technical problem in the prior art that the mixing concentration of multi-component gases in the combustion explosion experiment process lacks precise control and is likely to cause large errors in experimental data.

[0038] To make the above objects, features, and advantages of this application more obvious and understandable, the following specifically gives preferred embodiments and, in conjunction with the accompanying drawings, makes the following detailed description. Description of the Drawings

[0039] To more clearly illustrate the technical solutions of the embodiments of this application, the following will briefly introduce the drawings required in the embodiments. It should be understood that the following drawings only show some embodiments of this application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0040] Figure 1 A schematic diagram showing an assembly drawing of the combustion explosion experiment system;

[0041] Figure 2 A schematic diagram showing the connection of the gas mixing chamber and the gas mixing spiral tube;

[0042] Figure 3 A schematic diagram showing the connection between the gas equalizing chamber and the gasification chamber;

[0043] Figure 4 A schematic diagram showing the working process of the combustion and explosion experiment system.

[0044] Reference numerals:

[0045] 1 - gas cylinder; 2 - pressure reducing valve; 3 - first flowmeter; 4 - on-off solenoid valve; 5 - gas mixing chamber; 6 - gas mixing spiral tube; 7 - first valve member; 8 - first one-way check valve; 9 - second one-way check valve; 10 - pipeline pressure sensor; 11 - third valve member; 12 - second flowmeter; 13 - gas equalizing chamber; 14 - gas equalizing fan blade; 15 - air pump; 16 - gasification chamber; 17a - first plate member; 17b - second plate member; 171 - first preset gap; 172 - second preset gap; 18 - steamer and heating plate; 19 - liquid inlet; 20 - gas chromatograph; 21 - gas chromatograph workstation; 22 - high-pressure air inlet end; 23 - intake valve; 24 - air compressor; 25 - air compressor pressure gauge; 26 - third one-way check valve; 27 - liquid and powder storage chamber; 28 - vacuum pump; 29 - sensor test point; 30 - temperature sensor; 31 - vacuum gauge; 32 - spherical safety valve; 33 - electrode wire; 34 - in-sphere pressure sensor; 35 - observation window; 36 - spherical pressure gauge; 37 - combustion and explosion sphere. a - first path; b - second path; c - third path; d - fourth path; e - fifth path. Detailed implementation manners

[0046] The technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0047] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0048] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0049] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0050] Figure 1 A schematic diagram showing an assembly drawing of an explosion experiment system is shown; Figure 2 A schematic diagram showing the connection of the gas mixing chamber and the gas mixing spiral tube is shown; Figure 3 A schematic diagram showing the connection of the gas equalizing chamber and the gasification chamber is shown; Figure 4 A schematic diagram showing the working process of the explosion experiment system is shown.

[0051] See Figures 1 to 4 , the explosion experiment system provided in this embodiment includes: an explosion container, a mixed gas source, a gas component detection device, and a vacuum extraction device. The connection relationship and working principle between the above structures will be specifically described below.

[0052] In this embodiment, the mixed gas source is used to provide a mixed gas, and the explosion container is in communication with the mixed gas source so that the mixed gas can be introduced into the interior of the explosion container for an explosion experiment. In this embodiment, the explosion container adopts an explosion sphere 37 with a volume of 20L in the prior art, and its test function will be mentioned in the following description. In addition, in this embodiment, the mixed gas source can provide the mixed gas through three gas mixing mechanisms, which will be described separately below.

[0053] In this embodiment, the first gas mixing mechanism can mix a variety of gases in a gaseous state at normal temperature to obtain a mixed gas. The first gas mixing mechanism includes a pressure vessel and a gas mixing chamber 5. The pressure vessel can output gas, and the pressure and flow rate of the output gas can be adjusted. In this embodiment, the pressure vessel is in communication with the gas mixing chamber 5 through a third path c, and a second valve member can be provided on the third path c, and the second valve member is used to control the opening and closing of the third path c.

[0054] The above pressure vessel may include a gas cylinder 1 storing a certain amount of gas and a pressure regulating member. The third path c and the following paths may be explosion-proof pipelines common in the prior art, and the pressure regulating member may be a pressure reducing valve 2 common in the prior art. That is to say, when the gas cylinder 1 is opened, adjusting the pressure reducing valve 2 can change the pressure of the gas provided by the gas cylinder 1. In addition, for example, the second valve member controlling the opening and closing of the third path c may be an on-off solenoid valve 4 common in the prior art.

[0055] In this embodiment, the first gas mixing mechanism has a plurality of third paths c. The components provided on the third paths c are the same as those mentioned in the above description. Moreover, each third path c communicating with the mixing chamber 5 can be externally connected to the above-mentioned gas cylinder 1 to meet the requirements of the combustion explosion experiment for mixing multiple gases.

[0056] As Figure 2 shown, in this embodiment, the mixing chamber 5 may include two parts of structures, and these two parts of structures can be connected by fastening bolts, which is convenient for disassembling, assembling and maintaining the mixing chamber 5. In this embodiment, the interior of the mixing chamber 5 has a cavity for accommodating multiple gases. The above-mentioned multiple third paths c form a connection with the cavity through the bottom surface of the cavity, and the following mixing spiral tube 6 forms a connection with the cavity through the arc surface of the cavity.

[0057] Since multiple third paths c are connected to the cavity through the bottom surface of the cavity, the ends of multiple third paths c are all in the same plane. When multiple gases flow into the cavity through the third paths c, except that the magnitudes of the velocities may be different, the remaining physical states (such as the velocity directions) are the same. In this case, the airflows of multiple gases directly or naturally converge at the connection between the following mixing spiral tube 6 and the arc surface of the cavity along the inner arc portion of the cavity, so that multiple gases can be mixed more fully.

[0058] In this embodiment, to further accelerate the mixing time of multiple gases and improve the mixing efficiency, as Figure 2 shown, when looking along the Figure 2 direction, the cross-section of the mixing chamber 5 is approximately a bow shape surrounded by a minor arc and the corresponding chord. In addition, to further improve the mixing degree of multiple gases, the following spiral mixing pipe can be set at the vertex (i.e., the highest point) of the arc surface.

[0059] It should be noted that in this embodiment, a fillet is formed at the junction of the bottom surface and the arc surface of the cavity. Thus, the cavity of the mixing chamber 5 as a whole has a smooth structure, avoiding the loss of the mixed gas caused by the gas gathering at the junction of the bottom surface and the arc surface of the above-mentioned cavity.

[0060] Based on the features described above, the first gas mixing mechanism may further include a gas mixing spiral tube 6. The gas mixing spiral tube 6 is communicated with the above-mentioned gas mixing chamber 5, and the communication method has been mentioned in the above description and will not be elaborated here. In this embodiment, the gas mixing spiral tube 6 is formed in a spiral shape to extend the travel of the above-mentioned mixed gas, and at the same time continuously change the velocity direction of the mixed gas, so that the mixed gas is fully mixed. The pipe diameter of the gas mixing spiral tube 6 may be smaller than the pipe diameter of the explosion-proof pipeline adopted by the third path c, so as to accelerate the flow rate of the mixed gas in the gas mixing spiral tube 6, and realize the further mixing of the mixed gas flowing through the gas mixing spiral tube 6.

[0061] Since the gas used in the experiment may be corrosive during the experiment, for the gas mixing spiral tube 6 with a smaller pipe diameter, a passivation layer can also be formed on the inner wall of the gas mixing spiral tube 6. In addition to preventing the gas from corroding the gas mixing spiral tube 6, the passivation layer can also avoid the problem of gas loss caused by the gas adhering to the inner wall of the gas mixing spiral tube 6.

[0062] In this embodiment, the gas mixing spiral tube 6 is communicated with the combustion and explosion container through the second path b. That is to say, the first gas mixing mechanism is communicated with the combustion and explosion container through the second path b, and the second path b may also be provided with a first one-way valve member. For example, the first one-way valve member may be a first one-way check valve 8, which is used to limit the flow of gas in the combustion and explosion container to the gas mixing spiral tube 6, so as to prevent the impact air flow from flowing back to the first gas mixing mechanism and causing damage to the first gas mixing mechanism during the combustion and explosion experiment.

[0063] In this embodiment, before the combustion and explosion experiment, it is necessary to detect the gas components in the mixed gas mixed by the gas mixing spiral tube 6 to ensure the accuracy of the proportion of each gas in the mixed gas during the combustion and explosion experiment. Therefore, the gas mixing spiral tube 6 is also communicated with the gas component detection device through the first path a. The gas component detection device may be a gas chromatograph 20 and a gas chromatograph workstation 21. The proportion of each gas in the mixed gas is detected by the gas chromatograph 20, and the data is output through the gas chromatograph workstation 21.

[0064] In this embodiment, the first path a and the second path b have an intersection, and the first valve member 7 is arranged at this intersection. The first valve member 7 may be a common four-way three-way solenoid valve in the prior art. In this way, the first valve member 7 can realize the opening and closing of the first path a (that is, communicate the gas mixing spiral tube 6 with the gas component detection device and disconnect the communication between the gas mixing spiral tube 6 and the gas component detection device), and the opening and closing of the second path b (that is, communicate the gas mixing spiral tube 6 with the combustion and explosion sphere 37 and disconnect the communication between the gas mixing spiral tube 6 and the combustion and explosion sphere 37), and can also realize closing the first path a and the second path b at the same time, and opening the first path a and the second path b at the same time.

[0065] According to the above description, that is to say, when the first path a is opened and the second path b is closed, the gas chromatograph 20 analyzes the components of the mixed gas; when the components of the mixed gas meet the requirements, the first path a is closed and the second path b is opened, and the mixed gas is introduced into the combustion and explosion sphere 37 for detonation. In this embodiment, a first flow member may also be provided on the third path c. The first flow member may be a first flowmeter 3. The first flowmeter 3 can display and control the flow rate of the gas flowing through itself, that is, by adjusting the first flowmeter 3, the flow rate of the gas flowing through the first flowmeter 3 is adjusted, thereby adjusting the component ratio of the gas in the mixed gas. After the components of the mixed gas meet the requirements, the first path a can be closed first and the second path b can be opened. When the total amount of the mixed gas reaches a preset value, the on-off solenoid valve 4 closes the third path c, and at this time, detonation can be carried out.

[0066] In order to avoid interference with the combustion and explosion test results caused by the air inside the combustion and explosion sphere 37, the second path b and the mixing chamber 5 or the gas remaining from the previous experiment, and to avoid the air or the gas remaining from the previous experiment in the first path a from reducing the detection efficiency of the gas chromatograph 20, before mixing the gases, in this embodiment, a vacuum extraction device is used to evacuate the combustion and explosion sphere 37, the first path a, the second path b and the mixing chamber 5 to eliminate the interference of air or the gas remaining from the previous experiment.

[0067] In this embodiment, the vacuum extraction device may be a vacuum pump 28. The combustion and explosion sphere 37 may also be provided with a vacuum gauge 31 cooperating with the vacuum pump 28 to monitor the vacuum degree inside the combustion and explosion sphere 37 through the vacuum gauge 31. Specifically, when the on-off solenoid valve 4 on the third path c is closed, the first path a and the second path b are simultaneously opened, and the vacuum pump 28 operates. When the vacuum degree displayed by the vacuum gauge 31 meets the requirements, the vacuum pump 28 stops operating.

[0068] In addition, in this embodiment, a pipeline pressure sensor 10 (not shown on the third path c) may be provided on the third path c to monitor the pressure change of the third path c in real time.

[0069] However, it is not limited to this. In this embodiment, the control of the opening and closing of the first path a and the second path b may also be: an on-off solenoid valve is provided on the first path a after the intersection of the first path a and the second path b, and another on-off solenoid valve is provided on the second path b after the intersection. The two on-off solenoid valves form a first valve assembly, which can also achieve the effect of the above-mentioned four-way three-way valve.

[0070] Based on the technical features described above, the working process of the combustion and explosion test system will be described below in the case where the first gas mixing mechanism provides the mixed gas.

[0071] Step 1: The first valve member 7 opens the first path a and the second path b, and the on-off solenoid valve 4 for the third path c is closed. In this case, the first path a and the second path b are connected, and the second path b is connected to the inside of the gas mixing chamber 5. The vacuum pump 28 evacuates to the preset value indicated by the vacuum gauge 31.

[0072] Step 2: The first valve member 7 opens the first path a and closes the second path b, connects the gas mixing chamber 5 to the gas chromatograph 20, the on-off solenoid valve 4 is opened, and the pressure reducing valve 2 and the first flowmeter 3 are adjusted so that the components of the mixed gas meet the requirements.

[0073] Step 3: The first valve member 7 closes the first path a and opens the second path b, and the mixed gas enters the combustion and explosion sphere 37. When the total amount of the mixed gas reaches the preset value, the on-off solenoid valve 4 closes the third path c, and the first valve member 7 closes the first path a and the second path b.

[0074] Step 4: Detonate the gas and measure the parameters.

[0075] It should be noted that:

[0076] First, in this embodiment, since the component ratio of each gas in the mixed gas is adjusted by adjusting the pressure and flow rate of each gas, the mixing process of multiple gases is a real-time and synchronous process. When the total amount of the required mixed gas reaches the preset value, all the third paths c can be closed.

[0077] Second, in this embodiment, the combustion and explosion sphere 37 further includes: a sensor test point 29 for installing a sensor to measure the parameters inside the combustion and explosion sphere 37; a temperature sensor 30 for measuring the temperature inside the combustion and explosion sphere 37; a sphere safety valve 32 for ensuring the safety of the combustion and explosion sphere 37; an electrode wire 33 for connecting to an external power source to generate an electric spark to ignite the mixed gas; a sphere internal pressure sensor 34 for real-time monitoring of the pressure inside the combustion and explosion sphere 37; a sphere pressure gauge 36 for showing the pressure value inside the sphere; and an observation window 35 for observing the combustion and explosion process of the mixed gas during the combustion and explosion experiment.

[0078] Third, the above-mentioned one kind of gas refers to the gas stored in a single gas cylinder 1, but it does not mean that the gas stored in a single gas cylinder 1 is a pure substance. That is to say, the gas stored in a single gas cylinder 1 itself can be a gas mixture of multiple gases, such as natural gas.

[0079] Fourth, when the first path a is closed and the second path b is opened instantaneously, since the second path b is in a vacuum state, the pressure in the third path c, the gas mixing chamber 5 and the second path b will drop suddenly. To ensure the accuracy of the total amount of the mixed gas, after the pressure signal shown by the pipeline pressure sensor 10 is stable, the total amount of the mixed gas is determined.

[0080] In this embodiment, the explosion experiment system further includes a control system, and the control system can be a PIC (Programmable Interrupt Controller) control system. The control process of the above explosion experiment will be described based on this control system below.

[0081] When the power supply of the explosion experiment system is turned on, the PIC control system controls the first valve member 7 to open the first path a, and opens the second path b. The on-off solenoid valve 4 on the third path c is closed, and the vacuum pump 28 evacuates the air. When the vacuum gauge 31 reaches the required vacuum degree, it triggers the PIC control system. The PIC control system controls the first valve member 7 to open the first path a and close the second path b. At this time, the operator adjusts the first flowmeter 3 and the pressure reducing valve 2. When the gas components in the mixed gas meet the requirements, the gas chromatograph 20 sends a signal to the PIC control system. The PIC control system controls the first valve member 7 to close the first path a and open the second path b. When the pressure signal shown by the pipeline pressure sensor 10 (the pipeline pressure sensor 10 is electrically connected to the PIC control system) is stable and the flow rate of the mixed gas reaches the preset value of the PIC control system, the PIC control system controls the on-off solenoid valve 4 to close the third path c, and controls the first valve member 7 to close the first path a and close the second path b.

[0082] In this embodiment, the mixed gas source further includes a second gas mixing mechanism. In this embodiment, the second gas mixing mechanism mainly mixes the vapors generated by the evaporation of multiple liquids, which will be specifically described below.

[0083] The second gas mixing mechanism includes a vaporization chamber 16 and a gas equalizing chamber 13 communicated with the vaporization chamber 16. An accommodation heating part is arranged inside the vaporization chamber 16, and the accommodation heating part is used to accommodate multiple liquids and heat and vaporize the multiple liquids. In this embodiment, the accommodation heating part can be a steamer and a heating plate 18 (for example, refer to Figure 3 ), and the heating plate can be arranged below the steamer to improve the efficiency of liquid vaporization during the heating process. The multiple liquids can be mixed first and then added to the steamer through the liquid inlet 19 on the side of the vaporization chamber 16, or can be added to the steamer through the liquid inlet 19 respectively, and then heated by the heating plate to be vaporized into vapors.

[0084] In this embodiment, an air pump 15 is provided on the pipeline connecting the gasification chamber 16 and the gas equalizing chamber 13. The air pump 15 is used to draw the mixed vapor formed after vaporizing the above-mentioned various liquids into the gas equalizing chamber 13. Considering that the air pump 15 has a certain suction capacity and that liquid splashing may occur during the above heating process, in order to prevent the air pump 15 from directly sucking liquid droplets into the gas equalizing chamber 13, resulting in insufficient liquid gasification, in this embodiment, a first plate member 17a is further provided above the steamer and the heating plate 18. One end of the first plate member 17a in the first direction and the inner part of the gasification chamber 16 jointly define a first preset gap 171 for the mixed steam to pass through.

[0085] As Figure 3 shown, the above-mentioned first direction can be the horizontal direction in the figure. The left end of the first plate member 17a in the figure and the inner side of the gasification chamber 16 form the first preset gap 171. Further, in this embodiment, a second plate member 17b is further provided above the first plate member 17a. On the side opposite to the first preset gap 171 (i.e., the right side in the figure), the second plate member 17b and the inner part of the gasification chamber 16 jointly define a second preset gap 172 in the horizontal direction. Thus, under the suction of the air pump 15, the mixed steam can successively pass through the first preset gap 171 and the second preset gap 172 to form a U-turn between the first plate member 17a and the second plate member 17b, so that the travel of each gas in the mixed steam is extended, and the mixing of each gas in the mixed steam is more sufficient.

[0086] In this embodiment, an air equalizing fan blade 14 is provided in the above-mentioned gas equalizing chamber 13. A plurality of air equalizing fan blades 14 can be coaxially arranged, for example. Rotatably arranged in the gas equalizing chamber 13 through bearings, the air equalizing fan blades 14 can face the connection point between the pipeline of the air pump 15 and the gas equalizing chamber 13, so that the mixed steam sucked from the gasification chamber 16 to the gas equalizing chamber 13 by the air pump 15 can blow the air equalizing fan blades 14 to rotate. The air equalizing fan blades 14 stir the mixed steam during rotation, making the mixing of the mixed steam more sufficient and stabilizing the flow rate of the mixed steam after passing through the air equalizing fan blades 14.

[0087] In this embodiment, the gas equalizing chamber 13 is connected to the gas chromatograph 20 through a fourth path d and is connected to an explosion combustion container through a fifth path e (that is, the second gas mixing mechanism is connected to the gas chromatograph 20 through the fourth path d and is connected to the explosion combustion container through the fifth path e). As Figure 1 shown, the fourth path d and the fifth path e also have an intersection. In this embodiment, the second gas mixing mechanism further includes a third valve member 11. The third valve member 11 can also be a four-way three-way valve, and its setting method and working principle are the same as those of the above-mentioned first valve member 7 (the alternative implementation manner of the third valve member 11, the third valve assembly, is also the same as the setting method and working principle of the above-mentioned first valve assembly), which will not be elaborated here.

[0088] In addition, a second one-way valve member is provided on the fifth path e. The second one-way valve member can be a second one-way cut-off valve 9, and its function is the same as that of the above-mentioned first one-way cut-off valve 8, so it will not be elaborated here. In addition, a second flow member, that is, a second flowmeter 12, is provided on the fifth path e for displaying and controlling the flow rate of the mixed steam flowing through itself. The above-mentioned vacuum pump 28 can also evacuate the gas equalizing chamber 13, the fourth path d and the fifth path e, and the process is the same as that of the vacuum pump 28 evacuating the gas mixing chamber 5, the first path a and the second path b, so it will not be elaborated here.

[0089] Based on the technical features described above, the working process of the combustion and explosion experiment system will be described below when the second gas mixing mechanism provides the mixed gas.

[0090] Step 1: The third valve member 11 opens the fourth path d and the fifth path e. The second flowmeter 12 is opened and the air pump 15 is closed. In this case, the fourth path d is connected to the fifth path e, and the fifth path e is connected to the vaporization chamber 16 and the gas equalizing chamber 13. The vacuum pump 28 evacuates until the vacuum gauge 31 reaches the preset value.

[0091] Step 2: The third valve member 11 opens the fourth path d and closes the fifth path e, connecting the gas equalizing chamber 13 to the gas chromatograph 20. The heating plate starts to heat, and the air pump 15 is turned on to measure the proportion of the mixed steam components.

[0092] Step 3: The third valve member 11 closes the fourth path d and opens the fifth path e. The mixed gas enters the combustion and explosion sphere 37. When the flow rate value shown by the second flowmeter 12 reaches the preset flow rate, the third valve member 11 closes the fourth path d and the fifth path e.

[0093] Step 4: Detonate the gas and measure the parameters.

[0094] In addition, in this embodiment, a pipeline pressure sensor 10 can also be provided on the fifth path e to monitor the pressure change of the fifth path e in real time. The process of the PIC control system controlling the second gas mixing mechanism is similar to that of controlling the above-mentioned first gas mixing mechanism, so it will not be elaborated here.

[0095] In this embodiment, a third gas mixing mechanism is further included. The third gas mixing mechanism includes a high-pressure intake end 22 that can be connected to a high-pressure gas source; an intake valve 23 for opening and closing the high-pressure intake end 22; an air compressor 24 for compressing the gas entering from the high-pressure intake end 22 and inputting the gas into the combustion and explosion sphere 37; and an air compressor pressure gauge 25 for showing the working pressure of the air compressor 24.

[0096] In this embodiment, the third gas mixing mechanism has a structure approximately symmetrical about the combustion and explosion sphere 37 to improve the intake efficiency. Figure 1Only one side of the structure is labeled. A third one-way check valve 26 is also provided between the pipeline of the air compressor 24 and the combustion explosion sphere 37, and its function is the same as that of the first one-way check valve 8 described above, so it will not be elaborated here.

[0097] In this embodiment, the third gas mixing mechanism further includes a liquid and powder storage chamber 27. The liquid and powder storage chamber 27 may include an inlet (not shown in the figure), and liquid or powder can be added to the inside of the liquid and powder storage chamber 27 through the inlet. The inside of the liquid and powder storage chamber 27 is also provided with the above-mentioned structure for accommodating the heating part, which can accommodate liquid or powder and can be heated to evaporate the liquid. When the liquid is heated to steam or the heating part for accommodation contains powder, the steam or powder can be pressed into the combustion explosion sphere 37 under the transportation of the air compressor 24 for a combustion explosion experiment.

[0098] Taking the third gas mixing mechanism for a gas combustion explosion experiment as an example, the following describes its working process:

[0099] Step 1: The high-pressure air inlet end 22 intakes air, and the air compressor 24 compresses the gas and enters the combustion explosion sphere 37;

[0100] Step 2: Detonate the mixed gas and measure the parameters.

[0101] The above are only the preferred embodiments of the present application, and do not limit the protection scope of the present application. Any equivalent structural transformation made by using the content of the specification and drawings of the present application under the innovative concept of the present application, or direct / indirect application in other related technical fields are all included in the protection scope of the present application.

Claims

1. An explosion experiment system, characterized in that, The explosion experiment system includes: An explosion container; A mixed gas source for providing a mixed gas and communicating with the explosion container to introduce the mixed gas into the explosion container; A gas component detection device, the mixed gas source is communicated with the gas component detection device, and the gas component detection device is used to detect the proportion of each gas component in the mixed gas; Wherein, the mixed gas source further includes a second gas mixing mechanism, and the second gas mixing mechanism includes: A vaporization chamber for accommodating a mixed liquid and vaporizing the mixed liquid into a mixed vapor; A gas equalization chamber communicated with the vaporization chamber and used to stabilize the flow rate of the mixed vapor; A gas pump disposed on the pipeline connecting the vaporization chamber and the gas equalization chamber, and the gas pump is used to pump the mixed vapor into the gas equalization chamber; A fourth path communicating the gas equalization chamber with the gas component detection device; Wherein, the gas equalization chamber includes: Gas equalization fan blades disposed at the connection between the gas equalization chamber and the vaporization chamber, for making the mixed vapor mix sufficiently and stabilizing the flow rate of the mixed vapor; Wherein, the vaporization chamber includes: A containing and heating part for accommodating the mixed liquid and heating the mixed liquid; A first plate member disposed above the containing and heating part, and one end of the first plate member in the first direction and the inner side part of the vaporization chamber jointly define a first preset gap; A second plate member disposed above the first plate member, on the side opposite to the first preset gap, and the second plate member and the inner side part of the vaporization chamber jointly define a second preset gap in the first direction.

2. The explosion experiment system according to claim 1, wherein, The mixed gas source includes a first gas mixing mechanism, and the first gas mixing mechanism includes: A pressure vessel, the pressure of the gas output by the pressure vessel can be adjusted; A gas mixing chamber and a third path, the gas mixing chamber is communicated with the pressure vessel through the third path; A first flow member disposed on the third path and used to display and control the flow rate of the gas flowing through the first flow member; A second valve member disposed on the third path for connecting or disconnecting the pressure vessel and the gas mixing chamber; 3. The explosion experiment system according to claim 2, wherein, The first gas mixing mechanism further includes a gas mixing spiral tube, the gas mixing spiral tube is formed in a spiral shape and communicated with the gas mixing chamber, and a passivation layer for preventing the gas mixing spiral tube from being corroded is formed on the inner wall of the gas mixing spiral tube.

4. The explosion experiment system according to claim 3, wherein The first gas mixing mechanism further includes: A first path communicating the gas mixing spiral tube with the gas component detection device; A second path communicating the gas mixing spiral tube with the explosion container; A first valve member or a first valve assembly disposed at the intersection of the first path and the second path and used to control: the opening of the first path and the opening of the second path, the opening of the first path and the closing of the second path, the closing of the first path and the opening of the second path, and the closing of the first path and the closing of the second path; A first one-way valve member disposed on the second path for restricting the gas flow in the explosion container from flowing into the gas mixing spiral tube.

5. The explosion experiment system according to claim 3, wherein The gas mixing chamber is formed with a cavity portion, the cavity portion is formed in a spherical segment shape, and a plurality of the pressure vessels communicate with the cavity portion through the bottom surface of the cavity portion in the spherical segment shape; the gas mixing spiral tube communicates with the cavity portion through the arc surface of the cavity portion in the spherical segment shape; The junction of the bottom surface and the arc surface is formed as a rounded corner.

6. The explosion experiment system according to claim 1, wherein The second gas mixing mechanism further includes: A second flow member, disposed on the fourth path, for displaying and controlling the flow rate of the mixed vapor flowing through the second flow member; A fifth path, communicating the gas equalizing chamber and the combustion explosion container; A third valve member or a third valve assembly, disposed at the intersection of the fourth path and the fifth path, and used for controlling: the opening of the fourth path and the opening of the fifth path, the opening of the fourth path and the closing of the fifth path, the closing of the fourth path and the opening of the fifth path, and the closing of the fourth path and the closing of the fifth path; A second one-way valve member, disposed on the fifth path, for restricting the gas in the combustion explosion container from flowing to the gas equalizing chamber.

7. The explosion experiment system according to claim 1, wherein The combustion explosion experiment system further includes a vacuum extraction device, and the vacuum extraction device communicates with the combustion explosion container.

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