Double-fire-source combustion experiment device capable of being doped with gasified fluid

Abstract

The invention discloses a double-fire-source combustion experiment device capable of mixing gasified fluid, which is composed of two sets of fire source combustion experiment devices, and the fire source combustion experiment devices comprise: a first gas device comprising a gas storage bottle, a gas bottle valve, a pressure gauge, a gas flowmeter and a first gas transportation pipeline which are communicated in sequence; the second gas device comprises a peristaltic pump, a liquid collecting pipe, a liquid flow meter and a second gas conveying pipeline which are communicated in sequence; the gas mixing device comprises a mixed gas conveying pipeline and a burner nozzle which are communicated in sequence, and a temperature sensor is mounted on the lower side of the burner nozzle; the combustor box body device comprises a box body and a combustor fixing device installed on the outer side of the box body. According to the flame experiment device capable of adjusting the distance between the two fire sources and being mixed with the gasification fluid, the distance between the two fire sources, the power of the fire sources and the types of the gasification fluid can be changed, and experiments of combustion of the two fire sources with different distances and different mixed gases can be conveniently carried out.

Description

Technical Field

[0001] The invention belongs to the technical field of dual-fire source combustion and fire, and in particular relates to a dual-fire source combustion experimental device capable of mixing gasified fluid. Background Art

[0002] With the development of industry, more and more combustion gases are used as clean energy, such as natural gas and biogas, and non-combustible gases such as water vapor and carbon dioxide are also important components of these combustion gases, and the content of these non-combustible gases can affect the flame combustion characteristics. In the event of a fire, factors such as the combustion behavior of the fire source, smoke diffusion, temperature distribution, and ventilation conditions have an important impact on the development of the fire and the safe evacuation of personnel. When a fire occurs in special places such as laboratories, certain reagents or fluids are affected by the fire and evaporate to assist combustion, which affects the flame combustion. Therefore, it is of great significance to study the effect of certain liquid evaporation on flame combustion. For example, the addition of water vapor to flame combustion can regulate the temperature and oxygen concentration during the fire process, thereby slowing down the spread of the fire, improving the efficiency of personnel evacuation and firefighting, and reducing fire losses. At the same time, in some industrial production and energy conversion processes, the addition of water vapor can improve the combustion process and improve energy utilization efficiency. For example, in coal-fired power plants, the addition of water vapor can reduce the combustion temperature of coal, reduce smoke emissions, and improve power generation efficiency. Adding water vapor during the combustion process can lower the combustion temperature and oxygen concentration, reduce the generation of harmful gases such as nitrogen oxides and carbon monoxide, and thus reduce the impact on the atmospheric environment. Studying the effect of water vapor on combustion is conducive to the development of new fire suppressants. By deeply understanding the action mechanism of water vapor in fire, more efficient and environmentally friendly fire extinguishing agents can be designed to improve the effect of fire suppression and reduce fire losses.

[0003] Multi-fire source combustion refers to the combustion phenomenon in which two or more adjacent fire sources are ignited at the same time. Compared with a single fire, the interaction between multiple fire sources will lead to different combustion behaviors. The interaction between fire sources, smoke flow and temperature field changes are more complicated, which puts higher requirements on fire simulation, preventive measures and emergency response. When the interval between adjacent fire sources is relatively short, the flames may merge to form a larger flame, which will amplify the danger of the fire. At the same time, studying the dual-fire source combustion phenomenon can help scientists and engineers better understand the propagation mechanism of fire, optimize fire detection and alarm systems, design effective ventilation and smoke exhaust strategies, and formulate personnel evacuation and emergency rescue plans. Therefore, it is very necessary to study the flame characteristics of multiple fire sources.

[0004] Research on dual-fire source mixed gas fires has made some progress in both theory and practice, but there are still some challenges. In previous devices, the evaporation of liquid into gas is usually unstable, and the pipeline transportation distance to the combustion location is too long and lacks insulation effect, which leads to condensation of vaporized steam and a decrease in the gas content after evaporation. At the same time, there is also insufficient mixing of the two gases, resulting in unstable combustion and large experimental errors. Summary of the invention

[0005] The purpose of the present invention is to overcome the above problems existing in the prior art and to provide a dual-fire source combustion experimental device capable of mixing gasified fluid.

[0006] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0007] A dual-fire source combustion experimental device capable of mixing gasified fluids is composed of two sets of fire source combustion experimental devices, the fire source combustion experimental device comprising:

[0008] The first gas device comprises a gas storage cylinder, a gas cylinder valve, a pressure gauge, a gas flow meter, and a first gas transportation pipeline which are connected in sequence, and the gas storage cylinder is used to store the first gas;

[0009] The second gas device comprises a peristaltic pump, a liquid collecting pipe, a liquid flow meter, and a second gas transport pipeline which are connected in sequence. An electromagnetic heater is distributed in the front section of the second gas transport pipeline. The peristaltic pump is used to transport the fluid. The electromagnetic heater is used to heat and evaporate the fluid in the second gas transport pipeline to form a second gas.

[0010] The gas mixing device comprises a mixed gas transport pipeline and a burner nozzle which are connected in sequence, wherein the mixed gas transport pipeline is connected to the second gas transport pipeline and the first gas transport pipeline respectively, and a temperature sensor is installed at the lower side of the burner nozzle, and the temperature sensor is used to detect whether the mixed gas temperature in the mixed gas transport pipeline is lower than the condensation temperature of the second gas;

[0011] The burner box device comprises a box and a burner fixer installed outside the box, the box is used to accommodate a mixed gas transport pipeline, and the burner fixer is used to fix the burner nozzle.

[0012] Furthermore, the outer side of the rear section of the second gas transport pipeline is wrapped with an insulation layer.

[0013] Furthermore, the inner surface of the box body is wrapped with heating and heat preservation wires.

[0014] Furthermore, a displacement platform is provided on the upper surface of the box body, and the burner holder is adjustably mounted on the displacement platform.

[0015] Furthermore, the burner holder includes a roller support shaft and sliding rollers installed at both ends of the roller support shaft.

[0016] Furthermore, the burner fixture also includes bolts and nuts for fixing the position of the burner fixture.

[0017] Furthermore, a spiral fan blade is installed at the front section of the mixed gas transport pipeline to fully mix the first gas and the second gas.

[0018] Furthermore, the spiral fan blade includes a spiral fan blade motor and a spiral fan blade connection port arranged at the output end of the spiral fan blade motor, the spiral fan blade connection port is connected to the fan blade, and a hollow part is arranged in the middle of the fan blade.

[0019] Furthermore, a scale parallel to the displacement platform is installed on the upper surface of the displacement platform.

[0020] Further, the operation method is as follows:

[0021] Step 1: Complete the installation of the dual-fire source combustion experimental device and fix the burner nozzle;

[0022] Step 2: Turn off the liquid flow meter, turn on the peristaltic pump to transport the liquid into the liquid collecting pipe, and after reaching a predetermined scale, turn on the liquid flow meter and turn on the electromagnetic heater to heat and evaporate the liquid to form a second gas;

[0023] Step 3: Turn off the gas flow meter, open the gas cylinder valve of the gas storage cylinder, set the output pressure through the pressure gauge, and then turn on the gas flow meter to transport the gas to the first gas transportation pipeline as the first gas;

[0024] Step 4: Observe the temperature of the mixed gas through the temperature sensor. When the temperature of the mixed gas is higher than the second gas water vapor, start recording the experimental data.

[0025] The beneficial effects of the present invention are:

[0026] (1) The present invention meets the actual research needs by setting up dual fire sources and dual gas mixed combustion.

[0027] (2) The present invention uses a peristaltic pump to transport liquid to a liquid collecting pipe for heating and evaporation, and controls the flow rate of the evaporating fluid through a liquid flow meter to avoid intermittent evaporation of the liquid flowing out of the peristaltic pump directly, resulting in unstable delivery of the second gas.

[0028] (3) The present invention heats the liquid to evaporate and form a second gas. The electromagnetic heater has high heating efficiency. At the same time, a heating insulation wire is arranged on the inner wall of the combustion box and an insulation layer is wrapped around the second gas transport pipeline behind the electromagnetic heater to achieve the purpose of insulation, prevent condensation of the fluid after vaporization, and reduce experimental errors.

[0029] (4) The present invention provides a hollow-blade spiral fan to fully mix the two gases while minimizing the influence of blade rotation on the flow rate, thereby avoiding unstable combustion.

[0030] (5) The present invention provides a burner displacement sliding device between the mixed gas transport pipeline and the displacement platform. The sliding device realizes the sliding between the burner and the displacement platform through a sliding roller. At the same time, the other end of the central axis of the sliding roller is fixed on the outside of the gas mixing pipeline. The synchronous movement of the experimental burner and the gas pipeline can reduce the friction caused by adjusting the distance between the two fire sources, making it more convenient to adjust the distance between the fire sources. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0032] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0033] Figure 2 It is a front view structural schematic diagram of the present invention;

[0034] Figure 3 It is a top view of the upper surface of the box;

[0035] Figure 4 It is the front view of the burner moving and fixing device;

[0036] Figure 5 It is the left view of the burner moving and fixing device;

[0037] Figure 6 It is a schematic diagram of a spiral fan blade;

[0038] In the figure: 1. first gas device; 11. gas storage cylinder; 12. gas cylinder valve; 13. pressure gauge; 14. gas flow meter; 15. first gas transport pipeline; 2. second gas device; 21. peristaltic pump; 22. liquid collecting pipe; 23. liquid flow meter; 24. electromagnetic heater; 25. second gas transport pipeline; 26. insulation layer; 3. burner box device; 31. box; 32. heating insulation wire; 33. displacement platform; 34. burner fixing device; 341. screw nut; 35. scale; 36. sliding roller; 37. roller support shaft; 4. gas mixing device; 41. mixed gas transport pipeline; 42. spiral fan blade; 421. spiral fan blade motor; 422. spiral fan blade connection port; 423. fan blade; 424. hollow part; 43. temperature sensor; 44. burner nozzle. DETAILED DESCRIPTION

[0039] 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.

[0040] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0041] like Figure 1 The dual-fire source combustion experimental device for a gasified fluid is shown, which is composed of two sets of fire source combustion experimental devices, and the fire source combustion experimental devices include:

[0042] The first gas device 1 includes a gas cylinder 11, a gas cylinder valve 12, a pressure gauge 13, a gas flow meter 14, and a first gas transportation pipeline 15 which are connected in sequence. The gas cylinder 11 is used to store the first gas. The gas cylinder valve 12 and the gas flow meter 14 are opened and adjusted by reading the pressure gauge 13, thereby controlling and adjusting the flow rate of the first gas output.

[0043] The second gas device 2 includes a peristaltic pump 21, a liquid collecting pipe 22, a liquid flow meter 23, and a second gas transport pipeline 25 which are connected in sequence. An electromagnetic heater 24 is distributed in the front section of the second gas transport pipeline 25. The peristaltic pump 21 is used to transport the fluid. The electromagnetic heater 24 is used to heat and evaporate the fluid in the second gas transport pipeline 25 at a set power to form a second gas. The peristaltic pump 21 transports the fluid to the liquid collecting pipe 22 for storage at the set power, and controls the fluid output flow rate through the liquid flow meter 23, and the flow rate output by the liquid flow meter remains stable.

[0044] The gas mixing device 4 includes a mixed gas transport pipeline 41 and a burner nozzle 44 which are connected in sequence. The mixed gas transport pipeline 41 is respectively connected to the second gas transport pipeline 25 and the first gas transport pipeline 15. A temperature sensor 43 is installed on the lower side of the burner nozzle 44. The temperature sensor 43 is used to detect whether the mixed gas temperature of the mixed gas transport pipeline 41 is lower than the condensation temperature of the second gas, so as to avoid the reduction of the second gas content due to condensation of the second gas during the experiment, thereby increasing the experimental error.

[0045] The burner box device 3 includes a box 31 and a burner fixer 34 installed outside the box 31 . The box 31 is used to accommodate the mixed gas transportation pipeline 41 , and the burner fixer 34 is used to fix the burner nozzle 44 .

[0046] For heat preservation, the outer side of the rear section of the second gas transport pipeline 25 is wrapped with an insulation layer 26, and the inner surface of the box 31 is wrapped with a heating insulation wire 32, so as to maintain the internal temperature of the box 31 stable and avoid condensation after gas evaporation, which leads to a decrease in the second gas content and increases the experimental error.

[0047] In order to adjust the position of the burner nozzle 44, a displacement platform 33 is provided on the upper surface of the box body 31, and the burner fixture 34 is adjustably installed on the displacement platform 33. The burner fixture 34 includes a roller support shaft 37 and sliding rollers 36 installed at both ends of the roller support shaft 37. The burner fixture 34 also includes bolts and nuts 341 for fixing the position of the burner fixture 34; the grooves arranged inside the displacement platform 33 can control the distance between the two fire sources by adjusting the sliding roller 36 to meet the experimental conditions. The fixation of the bolts and nuts 341 can avoid changes in the distance between the two fire sources and irregular vibration of the fire sources during the experiment.

[0048] In order to fully mix, a spiral fan blade 42 is installed at the front section of the mixed gas transport pipeline 41, which is used to fully mix the first gas and the second gas and reduce experimental errors; the spiral fan blade 42 includes a spiral fan blade motor 421 and a spiral fan blade connecting port 422 arranged at the output end of the spiral fan blade motor 421, the spiral fan blade connecting port 422 is connected to the fan blade 423, and a hollow part 424 is provided in the middle of the fan blade 423.

[0049] For precise adjustment, a scale 35 parallel to the displacement platform 33 is installed on the upper surface of the displacement platform 33 .

[0050] The following is a detailed description of the double-fire source propane mixed with water vapor combustion experiment. The operation method is as follows:

[0051] Step 1: Complete the installation of the dual-fire source combustion experimental device and fix the burner nozzle 44, install the burner nozzle 44 on the mixed gas transport pipeline 41, move the sliding roller 36 in the displacement platform 33, determine the distance between the dual fire sources with reference to the scale 35, and then fix it with the bolts and nuts 341 on the burner holder 34;

[0052] Step 2: Turn off the liquid flow meter 23, turn on the peristaltic pump 21 to transport pure water into the liquid collecting pipe 22, and after reaching a predetermined scale, turn on the liquid flow meter 23, and at the same time turn on the electromagnetic heater 24 to heat and evaporate the liquid to form a second gas;

[0053] Step 3: Turn off the gas flow meter 14, open the gas cylinder valve 12 of the propane gas cylinder 11, set a suitable propane output pressure through the pressure gauge 13, and then turn on the gas flow meter 14 to transport the propane to the first gas transportation pipeline 15 as the first gas;

[0054] Step 4: Open the spiral fan blades 42 to fully mix the first gas propane and the second gas water vapor. At the same time, open the heating insulation wire 32 inside the box to maintain a constant temperature inside the box to prevent the second gas water vapor from condensing and causing the second gas content to decrease, resulting in a large experimental error. The temperature of the mixed gas is observed by the temperature sensor 43. When the temperature of the mixed gas is higher than that of the second gas water vapor, the second gas water vapor does not condense, and the experimental data is recorded. Different test conditions can be set by adjusting the sliding roller 36 to set the distance between the two fire sources, adjusting the size of the gas flowmeter to set the flow rate of the first gas propane, and adjusting the size of the liquid flowmeter to set the flow rate of the second gas water vapor.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0056] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A dual-fire source combustion experimental device capable of mixing gasified fluid, characterized in that: It consists of two sets of fire source combustion experimental devices, which include: A first gas device (1) comprises a gas storage cylinder (11), a gas cylinder valve (12), a pressure gauge (13), a gas flow meter (14), and a first gas transportation pipeline (15) which are connected in sequence, wherein the gas storage cylinder (11) is used to store the first gas; The second gas device (2) comprises a peristaltic pump (21), a liquid collecting pipe (22), a liquid flow meter (23), and a second gas transport pipeline (25) which are connected in sequence, an electromagnetic heater (24) being arranged at the front section of the second gas transport pipeline (25), the peristaltic pump (21) being used for transporting fluid, and the electromagnetic heater (24) being used for heating and evaporating the fluid in the second gas transport pipeline (25) to form a second gas; The gas mixing device (4) comprises a mixed gas transport pipeline (41) and a burner nozzle (44) which are connected in sequence, the mixed gas transport pipeline (41) being connected to the second gas transport pipeline (25) and the first gas transport pipeline (15) respectively, and a temperature sensor (43) being installed on the lower side of the burner nozzle (44), and the temperature sensor (43) being used to detect whether the temperature of the mixed gas in the mixed gas transport pipeline (41) is lower than the condensation temperature of the second gas; The burner box device (3) comprises a box (31) and a burner fixer (34) installed outside the box (31), the box (31) is used to accommodate a mixed gas transport pipeline (41), and the burner fixer (34) is used to fix a burner nozzle (44).

2. The dual-fire source combustion experimental device for a gasified fluid according to claim 1, characterized in that: The outer side of the rear section of the second gas transport pipeline (25) is wrapped with a thermal insulation layer (26).

3. The dual-fire source combustion experimental device for a gasified fluid according to claim 2, characterized in that: The inner surface of the box body (31) is wound with a heating and heat-insulating wire (32).

4. The dual-fire source combustion experimental device for a gasified fluid according to claim 3, characterized in that: A displacement platform (33) is provided on the upper surface of the box body (31), and a burner fixture (34) is adjustably mounted on the displacement platform (33).

5. The dual-fire source combustion experimental device for a gasified fluid according to claim 4, characterized in that: The burner holder (34) comprises a roller support shaft (37) and sliding rollers (36) mounted on both ends of the roller support shaft (37).

6. The dual-fire source combustion experimental device for a gasified fluid according to claim 5, characterized in that: The burner fixture (34) further comprises a bolt nut (341) for fixing the position of the burner fixture (34).

7. The dual-fire source combustion experimental device for a gasified fluid according to claim 6, characterized in that: The front section of the mixed gas transport pipeline (41) is provided with a spiral blade (42) for fully mixing the first gas and the second gas.

8. The dual-fire source combustion experimental device capable of mixing gasified fluid according to claim 7, characterized in that: The spiral fan blade (42) comprises a spiral fan blade motor (421) and a spiral fan blade connection port (422) arranged at the output end of the spiral fan blade motor (421); the spiral fan blade connection port (422) is connected to a fan blade (423); and a hollow portion (424) is arranged in the middle of the fan blade (423).

9. The dual-fire source combustion experimental device capable of mixing gasified fluid according to claim 8, characterized in that: A scale (35) parallel to the displacement platform (33) is installed on the upper surface of the displacement platform (33).

10. A dual-fire source combustion experimental device capable of mixing gasified fluid according to any one of claims 1 to 9, characterized in that: Here’s how to do it: Step 1: Complete the installation of the dual-fire source combustion experimental device and fix the burner nozzle (44); Step 2: close the liquid flow meter (23), open the peristaltic pump (21) to transport the liquid into the liquid collecting pipe (22), and after reaching a predetermined scale, open the liquid flow meter (23), and at the same time open the electromagnetic heater (24) to heat and evaporate the liquid to form a second gas; Step 3: close the gas flow meter (14), open the gas cylinder valve (12) of the gas storage cylinder (11), set the output pressure through the pressure gauge (13), and then open the gas flow meter (14) to transport the gas to the first gas transportation pipeline (15) as the first gas; Step 4: Observe the temperature of the mixed gas through the temperature sensor (43), and start recording experimental data when the temperature of the mixed gas is higher than the second gas water vapor.

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