Gas explosion critical parameter testing device and testing method

Abstract

This invention relates to the field of gas explosion testing technology and discloses a gas explosion critical parameter testing device and method, including a mounting platform. A reaction mechanism and a temperature control mechanism are fixedly connected to the top of the mounting platform. An air supply mechanism connected to the reaction mechanism is also fixedly connected to the top of the mounting platform. Air is introduced into the air intake box through an air intake pipe and a gas intake pipe, which drives the fan plate and drive shaft inside the air intake box to rotate. The drive shaft drives the stirring rod to stir, achieving mixing of air and gas. Subsequently, the mixed gas enters the reaction tank, driving the fan blades and rotating pipe to rotate. The rotating pipe drives the mounting pipe and drive plate to rotate, further mixing the incoming gas, achieving thorough mixing of air and gas, greatly improving the mixing efficiency of air and gas, and improving the accuracy of test data.

Description

Technical Field

[0001] This invention relates to the field of gas explosion testing technology, specifically to a gas explosion critical parameter testing device and testing method. Background Technology

[0002] Combustible gases or vapors are often exposed to high temperature and high pressure environments or high pressure and low temperature environments. For example, during oil and gas extraction, formation pressure can reach tens of megapascals, and temperatures can reach around 100°C. Furthermore, combustible gases are typically stored and transported in sealed containers and pipelines, where pressures can reach several megapascals or even tens of megapascals. Due to frictional heating, heat conduction, and heat convection, their temperatures are often higher than ambient temperatures. Under these conditions, when combustible gases or vapors mix with air, if the concentration reaches the explosive limits of the combustible gas, it is highly likely to explode upon contact with an electrostatic spark, causing casualties and property damage. Therefore, a device is needed to test the explosive limits of combustible gases under different conditions, thereby providing boundary conditions for process production and effectively preventing explosion accidents during oil and gas extraction and storage.

[0003] Chinese invention patent application number 201711228919.6 discloses a high-temperature and high-pressure combustible gas explosion limit testing device, comprising: a high-temperature and high-pressure reaction mechanism having a first opening and a second opening for allowing pressurized combustible gas and air to be injected respectively; a combustible gas injection mechanism including a first pressurizing structure for pressurizing the combustible gas and a first storage tank for storing the pressurized combustible gas, wherein the pressurized combustible gas output from the first storage tank is injected into the high-temperature and high-pressure reaction mechanism; and an air injection mechanism including a second pressurizing structure for pressurizing air and a second storage tank for storing the pressurized air, wherein the pressurized air output from the second storage tank is injected into the high-temperature and high-pressure reaction mechanism. While this patent can effectively test combustible gases, it still has some problems in its implementation. During the testing process, the device reacts combustible gas and air within a high-pressure reactor using a reaction mechanism. However, before the reaction, only air and combustible gas are introduced into the reactor without thorough mixing. This incomplete mixing leads to incomplete combustion during the explosion test, resulting in inaccurate test data and affecting subsequent data processing. Furthermore, after combustion and explosion, soot and impurities adhere to the inner wall of the reactor. Because the reactor is a sealed, integrated structure, this patent cannot clean the inner wall of the reactor to remove soot and impurities. Prolonged neglect reduces the internal space, and the soot also affects the test data, leading to inaccurate results. Excessive buildup can render the reactor unusable, reducing its lifespan. Additionally, while this patent can test under high-temperature and high-pressure environments, it cannot test gases under high-pressure and low-temperature environments, limiting the device's testing capabilities. Summary of the Invention

[0004] The purpose of this invention is to provide a test device and method for testing critical parameters of gas explosion. It has the advantages of being able to fully mix gas and air, improving the accuracy of explosion test data, automatically cleaning the carbon black and impurities generated during explosion combustion in the reaction mechanism, improving the service life of the reaction mechanism, reducing the influence of external factors, and improving the accuracy of test data.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A gas explosion critical parameter testing device includes a mounting platform. A reaction mechanism is fixedly connected to the top of the mounting platform. A temperature control mechanism is fixedly connected to the top of the mounting platform. An air supply mechanism connected to the reaction mechanism is fixedly connected to the top of the mounting platform. A gas supply mechanism connected to the reaction mechanism is fixedly connected to the top of the mounting platform. A data acquisition and control mechanism connected to the reaction mechanism, temperature control mechanism, gas supply mechanism, and air supply mechanism is fixedly connected to the top of the mounting platform. A moving mechanism is provided at the bottom of the mounting platform.

[0007] As a further aspect of the present invention: the reaction mechanism includes a reaction tank fixedly connected to the mounting platform, an air inlet box fixedly connected to the top of the reaction tank, a gas inlet pipe and an air inlet pipe fixedly connected to the outer surface of the air inlet box, the gas inlet pipe and the air inlet pipe being respectively connected to a gas supply mechanism and an air supply mechanism, a drive shaft rotatably connected inside the air inlet box, multiple air vanes fixedly connected to the outer surface of the drive shaft, a stirring rod fixedly connected to the bottom end of the drive shaft, an air outlet pipe fixedly connected to the bottom of the air inlet box and fixedly connected to the reaction tank, an electromagnetic control valve being installed on the air outlet pipe, a safety valve fixedly connected to the top of the reaction tank, a temperature sensor fixedly connected to the top of the reaction tank, a temperature controller fixedly connected to the top of the temperature sensor, a pressure sensor fixedly connected to the top of the reaction tank, and an igniter installed inside the reaction tank.

[0008] As a further embodiment of the present invention: an installation plate is fixedly connected to the inside of the reaction vessel, a transmission pipe is rotatably connected to the upper part of the installation plate, a fan blade is fixedly sleeved on the outer surface of the transmission pipe, a plurality of installation pipes are fixedly connected to the outer surface of the transmission pipe, a transmission plate is fixedly connected to one end of the installation pipe, a water tank is opened in the transmission plate, a water spray hole is opened in the water tank, and a water inlet mechanism is drivenly connected to the top of the transmission pipe.

[0009] As a further aspect of the present invention: the water inlet mechanism includes a connecting pipe fixedly connected to the mounting plate, the bottom end of the connecting pipe being rotatably connected to the top end of the transmission pipe, a water inlet pipe being fixedly connected to the top end of the connecting pipe, and an electromagnetic control valve being provided on the outer surface of the water inlet pipe.

[0010] As a further aspect of the present invention: the temperature control mechanism includes a temperature control cover fixedly connected to the mounting platform, a plurality of electric heating plates fixedly connected inside the temperature control cover, an ultra-low temperature refrigeration box fixedly connected to the mounting platform, a fan fixedly connected to one side of the ultra-low temperature refrigeration box via a pipe, and an electromagnetic control valve installed on one side of the fan via a pipe.

[0011] As a further aspect of the present invention: the gas supply mechanism includes a gas storage tank fixedly connected to the mounting platform, the input end of the gas storage tank being fixedly connected to a first gas booster pump via a pipeline, one end of the first gas booster pump being fixedly connected to a first air compressor via an air inlet pipe, the air inlet pipe being equipped with a pressure regulating valve, the output end of the first gas booster pump being fixedly connected to a first storage tank fixedly connected to the mounting platform via an output pipe, the output pipe being equipped with a pressure gauge, the top of the first storage tank being connected to a gas inlet pipe, the gas inlet pipe being equipped with an electromagnetic control valve, and the gas inlet pipe being equipped with a gas flow valve.

[0012] As a further aspect of the present invention: the air supply mechanism includes an air storage tank fixedly connected to the mounting platform; the input end of the air storage tank is fixedly connected to a second gas booster pump via a pipe; one end of the second gas booster pump is fixedly connected to a second air compressor via an air inlet pipe; a pressure regulating valve is provided on the air inlet pipe; the output end of the second gas booster pump is fixedly connected to a second storage tank fixedly connected to the mounting platform via an output pipe; a pressure gauge is provided on the output pipe; the top of the second storage tank is connected to an air inlet pipe; an electromagnetic control valve is provided on the air inlet pipe; and a gas flow valve is provided on the air inlet pipe.

[0013] As a further aspect of the present invention: the moving mechanism includes two support threaded rods that are internally threaded to the mounting platform, a support plate is rotatably connected to the bottom of the support threaded rods, and a caster wheel is fixedly connected to the bottom of the support plate.

[0014] A test method for a gas explosion critical parameter testing device, characterized by comprising the following steps:

[0015] Step 1: Control the gas supply mechanism and air supply mechanism through the acquisition and control mechanism to introduce air and gas pressurized to a certain pressure coefficient into the air inlet box for mixing, and then introduce them into the reaction tank.

[0016] Step 2: Turn on the temperature control mechanism to heat or cool down the reaction vessel. Then, the temperature inside the reaction vessel is detected by the temperature sensor. At the same time, the temperature controller controls the temperature control mechanism to make the temperature inside the reaction vessel reach the test temperature and maintain the test temperature.

[0017] Step 3: The igniter is controlled by the acquisition and control mechanism to ignite the gas mixture in the reaction vessel. The acquisition and control mechanism then collects and analyzes the collected data to obtain the test results.

[0018] Step 4: After the test is completed, high-pressure gas is supplied to the air intake box through the air supply mechanism. The high-pressure gas drives the fan blades and transmission pipe to rotate. The transmission pipe drives the mounting pipe and transmission plate to rotate. Then, water is supplied to the transmission pipe by activating the water inlet mechanism. The water is sprayed out through the water spray hole on the transmission plate to wash the carbon black and impurities inside the reaction tank. The washing water is discharged through the drain pipe at the bottom of the reaction tank. Then, the temperature control mechanism heats and dries the reaction tank.

[0019] The beneficial effects of this invention are:

[0020] (1) Air is introduced into the air intake box through the air intake pipe and the gas intake pipe, which drives the air vane and drive shaft in the air intake box to rotate. The drive shaft drives the stirring rod to stir, thereby mixing the air and gas. Then, the mixed gas enters the reaction tank and drives the fan blade and rotating pipe to rotate. The rotating pipe drives the mounting pipe and drive plate to rotate, and mixes the gas again, thereby achieving full mixing of air and gas, greatly improving the mixing efficiency of air and gas, and improving the accuracy of test data.

[0021] (2) The incoming gas drives the fan blades and transmission pipe to rotate, and the transmission pipe drives the transmission plate to rotate. At the same time, the water inlet mechanism supplies water to the transmission pipe. Then the water is sprayed out through the water spray pipe on the transmission plate to rinse the inner wall of the reaction tank, thereby realizing the automatic cleaning of carbon black and impurities on the inner wall of the reaction tank, reducing the influence of impurities and carbon black on the explosion reaction, improving the test effect of the reaction tank, thereby reducing test interference, improving the test effect, and also improving the service life of the reaction tank.

[0022] (3) By installing an installation plate inside the reaction vessel, the reaction vessel is blocked from the impact force on the top of the reaction vessel during the explosion reaction, thereby reducing the damage of the impact force to various testing instruments on the top of the reaction vessel and improving the protection of the testing instruments.

[0023] (4) By coordinating the temperature control mechanism, air supply mechanism, gas supply mechanism and reaction mechanism, and by collecting reaction data through the acquisition and control mechanism, and controlling the reaction amount of each mechanism, the explosion critical parameter test of gas under different environments of high pressure and high temperature, high pressure and low temperature, high pressure and normal temperature is realized, thereby improving the applicability of the test device.

[0024] (5) By rotating the support threaded rod, the support threaded rod drives the support plate to move downward, and the support plate drives the caster to move downward, so that the caster touches the ground. Then the mounting platform is moved. When it is moved to the appropriate position, the caster can be raised by rotating the support threaded rod in the opposite direction, thus realizing the portable movement of the testing device. Attached Figure Description

[0025] The invention will now be further described with reference to the accompanying drawings.

[0026] Figure 1 This is a perspective view of the external structure of the present invention;

[0027] Figure 2 This is a partial perspective view of the internal structure of the present invention;

[0028] Figure 3 This is a front view of the internal structure of the reaction mechanism of the present invention;

[0029] Figure 4 This is the present invention. Figure 3 Enlarged view of A in the middle;

[0030] Figure 5 This is a top view of the internal structure of the air intake box of the present invention.

[0031] In the diagram: 1. Mounting platform; 11. Reaction tank; 12. Air inlet box; 13. Gas inlet pipe; 14. Air inlet pipe; 15. Drive shaft; 16. Fan plate; 17. Stirring rod; 18. Gas outlet pipe; 19. Safety valve; 191. Temperature sensor; 192. Temperature controller; 193. Pressure sensor; 194. Ignition device; 111. Mounting plate; 112. Drive pipe; 113. Fan blade; 114. Mounting pipe; 115. Drive plate; 116. Water 117. Water spray hole; 118. Connecting pipe; 119. Water inlet pipe; 21. Temperature control cover; 22. Electric heating plate; 23. Ultra-low temperature refrigeration box; 24. Fan; 31. Gas storage tank; 32. First gas booster pump; 33. First air compressor; 34. First storage tank; 41. Air storage tank; 42. Second gas booster pump; 43. Second air compressor; 44. Second storage tank; 51. Support threaded rod; 52. Support plate; 53. Casters. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figures 1-5As shown, this invention relates to a gas explosion critical parameter testing device and method, comprising a mounting platform 1. A reaction mechanism is fixedly connected to the top of the mounting platform 1, a temperature control mechanism is fixedly connected to the top of the mounting platform 1, an air supply mechanism connected to the reaction mechanism is fixedly connected to the top of the mounting platform 1, a gas supply mechanism is fixedly connected to the top of the mounting platform 1 and connected to the reaction mechanism, the temperature control mechanism, the gas supply mechanism and the air supply mechanism are fixedly connected to the top of the mounting platform 1, and a data acquisition and control mechanism is fixedly connected to the top of the mounting platform 1. A moving mechanism is provided at the bottom of the mounting platform 1. High-pressure gas is introduced into the reaction mechanism through the air supply mechanism and the gas supply mechanism. Subsequently, the temperature of the reaction mechanism is controlled by the temperature control mechanism, and then an ignition and explosion test is performed. At the same time, the reaction data is collected by the data acquisition and control mechanism, and the reaction amount of each mechanism is controlled. This enables the testing of the explosion critical parameters of gas under different environments such as high pressure and high temperature, high pressure and low temperature, high pressure and normal temperature, and normal pressure and normal temperature, thereby improving the applicability of the testing device.

[0034] Example 1

[0035] Please see Figures 1-5As shown, the reaction mechanism includes a reaction tank 11 fixedly connected to the mounting platform 1. An air inlet box 12 is fixedly connected to the top of the reaction tank 11. A gas inlet pipe 13 and an air inlet pipe 14 are fixedly connected to the outer surface of the air inlet box 12. The gas inlet pipe 13 and the air inlet pipe 14 are respectively connected to a gas supply mechanism and an air supply mechanism. A drive shaft 15 is rotatably connected inside the air inlet box 12. Multiple air vanes 16 are fixedly connected to the outer surface of the drive shaft 15. A stirring rod 17 is fixedly connected to the bottom end of the drive shaft 15. An air outlet pipe 18, fixedly connected to the bottom of the air inlet box 12 and fixedly connected to the reaction tank 11, is provided with an electromagnetic control valve. A safety valve 19 is fixedly connected to the top of the reaction tank 11. A temperature sensor 191 is fixedly connected to the top of the reaction tank 11. A temperature controller 192 is fixedly connected to the top of the temperature sensor 191. The reaction tank 11... A pressure sensor 193 is fixedly connected to the top. An igniter 194 is installed inside the reaction tank 11. Air is supplied to the air intake box 12 through the gas supply mechanism and the gas intake pipe 13. At the same time, air is supplied to the air intake box 12 through the air supply mechanism and the air intake pipe 14. The gas enters the air intake box 12 and drives the fan plate 16 on the drive shaft 15 to rotate. The fan plate 16 drives the drive shaft 15 to rotate. The drive shaft 15 drives the stirring rod 17 to rotate. The stirring rod 17 mixes the air and gas entering the air intake box 12, thereby achieving the mixing of gas and air. Then, the gas enters the reaction tank 11 through the gas outlet pipe 18 at the bottom of the air intake box 12. When the gas has completely entered the reaction tank 11, the electromagnetic control valve on the gas outlet pipe 18 is closed. Then, the igniter 194 is used for ignition. At the same time, the temperature sensor 191 and the temperature controller 192 control the temperature control mechanism to control the temperature inside the reaction tank 11.

[0036] An installation plate 111 is fixedly connected inside the reaction vessel 11. A transmission pipe 112 is rotatably connected to the upper part of the installation plate 111. A fan blade 113 is fixedly sleeved on the outer surface of the transmission pipe 112. Multiple installation pipes 114 are fixedly connected to the outer surface of the transmission pipe 112. A transmission plate 115 is fixedly connected to one end of each installation pipe 114. A water tank 116 is formed inside the transmission plate 115. A water spray hole 117 is formed inside the water tank 116. A water inlet mechanism is drivenly connected to the top of the transmission pipe 112. Gas entering the reaction vessel 11 from the gas outlet pipe 18 is first blown towards the fan blade 113 on the transmission pipe 112. 13. This drives the fan blade 113 to rotate, which in turn drives the transmission pipe 112 to rotate. The transmission pipe 112 then drives the mounting pipe 114 to rotate, which in turn drives the transmission plate 115 to rotate. The rotation of the mounting pipe 114 and the transmission plate 115 further mixes the gas and air inside the reaction vessel 11, greatly improving the mixing efficiency and the accuracy of the test data. Simultaneously, after multiple explosion tests, the combustion of the gas and air produces carbon black and impurities that adhere to the inner wall of the reaction vessel 11. When cleaning is required, air is supplied to the air inlet box 12 through the air supply mechanism. The solenoid valve on the gas intake pipe 13 is closed, and then the gas enters the intake box 12 through the air intake pipe 14, and then enters the reaction tank 11, driving the fan blade 113 and the transmission pipe 112 to rotate. The transmission pipe 112 drives the mounting pipe 114 and the transmission plate 115 to rotate. At the same time, the water inlet mechanism injects high-pressure cleaning fluid into the transmission pipe 112. The high-pressure cleaning fluid enters the mounting pipe 114 through the transmission pipe 112, and then enters the water tank 116 of the transmission plate 115 through the mounting pipe 114. It then enters the water spray hole 117 through the water tank 116 for water spraying, causing the transmission plate 115 to spray water onto the inner wall of the reaction tank 11. The carbon black is subjected to impact washing, and then the solenoid valve on the drain pipe at the bottom of the reaction vessel 11 is opened, and the cleaning wastewater is discharged from the drain pipe. This achieves automatic cleaning of the carbon black on the inner wall of the reaction vessel 11, improves the reaction effect of the reaction vessel 11, reduces test interference, improves test results, and also extends the service life of the reaction vessel 11. The mounting plate 111 installed inside the reaction vessel 11 blocks the impact force on the top of the reaction vessel 11 during the explosive reaction, thereby reducing the impact force on the various test instruments installed on the top of the reaction vessel 11 and improving the protection of the test instruments.

[0037] The water inlet mechanism includes a connecting pipe 118 fixedly connected to the mounting plate 111. The bottom end of the connecting pipe 118 is rotatably connected to the top end of the transmission pipe 112. A water inlet pipe 119 is fixedly connected to the top end of the connecting pipe 118. An electromagnetic control valve is provided on the outer surface of the water inlet pipe 119. By opening the electromagnetic control valve on the water inlet pipe 119, external cleaning fluid is pumped into the water inlet pipe 119 by a high-pressure pump. The cleaning fluid then enters the connecting pipe 118 through the water inlet pipe 119 and then enters the transmission pipe 112 through the connecting pipe 118.

[0038] Example 3

[0039] Please see Figure 2 As shown, the temperature control mechanism includes a temperature control cover 21 fixedly connected to the mounting platform 1. Multiple electric heating plates 22 are fixedly connected inside the temperature control cover 21. An ultra-low temperature refrigeration chamber 23 is fixedly connected to the mounting platform 1. A fan 24 is fixedly connected to one side of the ultra-low temperature refrigeration chamber 23 via a pipe. One side of the fan 24 is fixedly connected to the temperature control cover 21 via a pipe. An electromagnetic control valve is installed on the pipe. When conducting high-temperature environment testing, the electric heating plates 22 heat the reaction vessel 11 inside the temperature control cover 21, thereby heating the gas inside the reaction vessel 11 and raising the temperature of the test gas. When conducting low-temperature testing, the ultra-low temperature refrigeration chamber 23 cools the gas. Then, the electromagnetic control valve on the pipe is opened, and the fan 24 and the pipe draw low-temperature gas into the temperature control cover 21 to cool the air inside the reaction vessel 11, lowering the temperature of the test gas. This allows for testing of the gas under different environments, such as high or low temperatures.

[0040] Example 4

[0041] Please see Figure 1As shown, the gas supply mechanism includes a gas storage tank 31 fixedly connected to the mounting platform 1. A first gas booster pump 32 is fixedly connected to the input end of the gas storage tank 31 via a pipe. A first air compressor 33 is fixedly connected to one end of the first gas booster pump 32 via an inlet pipe. A pressure regulating valve is installed on the inlet pipe. A first storage tank 34 fixedly connected to the mounting platform 1 is fixedly connected to the output end of the first gas booster pump 32 via an output pipe. A pressure gauge is installed on the output pipe. The top of the first storage tank 34 is connected to a gas inlet pipe 13. An electromagnetic control valve and a gas flow valve are installed on the gas inlet pipe 13. The gas in the gas storage tank 31 is transported to the first gas booster pump 32 through a pipeline. Then, the first air compressor 33 drives the first gas booster pump 32 to work. The gas pressure regulating valve on the inlet pipe controls the gas intake of the first gas booster pump 32, thereby controlling the pressure coefficient of the first gas booster pump 32 on the gas. The first gas booster pump 32 pressurizes the incoming gas. The pressurized gas enters the first storage tank 34 for storage. Then, the electromagnetic control valve on the gas inlet pipe 13 is opened. Subsequently, the gas in the first storage tank 34 enters the gas inlet box 12 through the gas inlet pipe 13. At the same time, the gas flow valve on the gas inlet pipe 13 controls the gas intake of the gas into the reaction tank 11.

[0042] The air supply mechanism includes an air storage tank 41 fixedly connected to the mounting platform 1. A second gas booster pump 42 is fixedly connected to the input end of the air storage tank 41 via a pipe. A second air compressor 43 is fixedly connected to one end of the second gas booster pump 42 via an intake pipe. A pressure regulating valve is installed on the intake pipe. A second storage tank 44 fixedly connected to the mounting platform 1 is fixedly connected to the output end of the second gas booster pump 42 via an output pipe. A pressure gauge is installed on the output pipe. The top of the second storage tank 44 is connected to an air intake pipe 14. An electromagnetic control valve and a gas flow valve are installed on the air intake pipe 14 to allow air to pass through. The gas in the gas storage tank 41 is transported to the second gas booster pump 42 through a pipeline. Then, the second gas booster pump 42 is driven by the second air compressor 43. The air pressure regulating valve on the air inlet pipe controls the air intake of the second gas booster pump 42, thereby controlling the air pressurization coefficient of the second gas booster pump 42. The second gas booster pump 42 pressurizes the incoming air, and the pressurized gas enters the second storage tank 44 for storage. Then, the electromagnetic control valve on the air inlet pipe 14 is opened, and the gas in the second storage tank 44 enters the air inlet box 12 through the air inlet pipe 14. At the same time, the gas flow valve on the air inlet pipe 14 controls the air intake of the reaction tank 11.

[0043] Example 5

[0044] Please see Figure 1 As shown, the moving mechanism includes two support threaded rods 51 that are internally threaded to the mounting platform 1. A support plate 52 is rotatably connected to the bottom of the support threaded rods 51, and a caster wheel 53 is fixedly connected to the bottom of the support plate 52. When the testing device needs to be moved, the support threaded rods 51 are rotated, causing the support plate 52 to move downwards. The support plate 52 then causes the caster wheel 53 to move downwards, so that the caster wheel 53 touches the ground. The mounting platform 1 is then moved. Once the device is in the appropriate position, the caster wheel 53 can be raised by rotating the support threaded rods 51 in the opposite direction, thus achieving portable movement of the testing device.

[0045] Example 6

[0046] A test method for a gas explosion critical parameter testing device, characterized by comprising the following steps:

[0047] Step 1: Control the gas supply mechanism and air supply mechanism through the acquisition and control mechanism to introduce air and gas pressurized to a certain pressure coefficient into the air inlet box for mixing, and then introduce them into the reaction tank.

[0048] Step 2: Turn on the temperature control mechanism to heat or cool down the reaction vessel. Then, the temperature inside the reaction vessel is detected by the temperature sensor. At the same time, the temperature controller controls the temperature control mechanism to make the temperature inside the reaction vessel reach the test temperature and maintain the test temperature.

[0049] Step 3: The igniter is controlled by the acquisition and control mechanism to ignite the gas mixture in the reaction vessel. The acquisition and control mechanism then collects and analyzes the collected data to obtain the test results.

[0050] Step 4: After the test is completed, high-pressure gas is supplied to the air intake box through the air supply mechanism. The high-pressure gas drives the fan blades and transmission pipe to rotate. The transmission pipe drives the mounting pipe and transmission plate to rotate. Then, water is supplied to the transmission pipe by activating the water inlet mechanism. The water is sprayed out through the water spray hole on the transmission plate to wash the carbon black and impurities inside the reaction tank. The washing water is discharged through the drain pipe at the bottom of the reaction tank. Then, the temperature control mechanism heats and dries the reaction tank.

[0051] The working principle of this invention is as follows: Air is supplied to the air intake box 12 through a gas supply mechanism and a gas intake pipe 13, while air is supplied to the air intake box 12 through an air supply mechanism and an air intake pipe 14. The gas entering the air intake box 12 drives the fan plate 16 on the drive shaft 15 to rotate. The fan plate 16 drives the drive shaft 15 to rotate, which in turn drives the stirring rod 17 to rotate. The stirring rod 17 mixes the air and gas entering the air intake box 12, thus achieving mixing of the gas and air. Subsequently, the gas enters the reaction tank 11 through the gas outlet pipe 18 at the bottom of the air intake box 12. Once the gas has completely entered the reaction tank 11, the electromagnetic control valve on the gas outlet pipe 18 is then closed. The gas is then ignited by igniter 194. At the same time, the temperature control mechanism controls the temperature inside the reaction vessel 11 through temperature sensor 191 and temperature controller 192. Meanwhile, the gas entering the reaction vessel 11 from the gas outlet pipe 18 first blows onto the fan blade 113 on the transmission pipe 112, causing the fan blade 113 to rotate. The fan blade 113 drives the transmission pipe 112 to rotate, the transmission pipe 112 drives the mounting pipe 114 to rotate, and the mounting pipe 114 drives the transmission plate 115 to rotate. The rotation of the mounting pipe 114 and the transmission plate 115 further mixes the gas and air inside the reaction vessel 11, thereby greatly improving the mixing efficiency of air and gas and improving the accuracy of the test data.

[0052] Simultaneously, after multiple explosion tests, the combustion of gas and air produces carbon black and impurities that adhere to the inner wall of the reaction vessel 11. When cleaning is required, air is supplied to the air intake box 12 through the air supply mechanism. At this time, the solenoid valve on the gas intake pipe 13 is closed, and then the gas enters the air intake box 12 through the air intake pipe 14, and then enters the reaction vessel 11, driving the fan blade 113 and the transmission pipe 112 to rotate. The transmission pipe 112 drives the mounting pipe 114 and the transmission plate 115 to rotate. At the same time, the water inlet mechanism injects high-pressure cleaning fluid into the transmission pipe 112. The high-pressure cleaning fluid is then transferred through the transmission pipe 112. The moving pipe 112 enters the mounting pipe 114, and then enters the water tank 116 of the transmission plate 115 through the mounting pipe 114. Water then enters the spray hole 117 through the water tank 116 to spray water, so that the transmission plate 115 impacts and washes the carbon black on the inner wall of the reaction tank 11. Then, the solenoid valve on the drain pipe at the bottom of the reaction tank 11 is opened, and the cleaning wastewater is discharged from the drain pipe. This realizes the automatic cleaning of the carbon black on the inner wall of the reaction tank 11, improves the reaction effect of the reaction tank 11, reduces test interference, improves test results, and also extends the service life of the reaction tank 11.

[0053] When conducting high-temperature environment tests, the reaction vessel 11 inside the temperature control hood 21 is heated by the electric heating plate 22, thereby heating the gas inside the reaction vessel 11 and raising the temperature of the test gas. When conducting low-temperature tests, the ultra-low temperature refrigeration chamber 23 is used for cooling. Then, the electromagnetic control valve on the pipeline is opened, and the low-temperature gas is drawn into the temperature control hood 21 through the fan 24 and pipeline to cool the air inside the reaction vessel 11, thereby lowering the temperature of the test gas. This enables testing of the gas under different environments, such as high temperature or low temperature. At the same time, the explosion data of the gas under different pressures can be tested through the cooperation of the air supply mechanism and the gas supply mechanism. This enables the testing of the explosion critical parameters of the gas under different environments, such as high pressure and high temperature, high pressure and low temperature, high pressure and normal temperature, and normal pressure and normal temperature, thus improving the applicability of the testing device.

[0054] By rotating the support threaded rod 51, the support threaded rod 51 drives the support plate 52 to move downward, and the support plate 52 drives the caster 53 to move downward, so that the caster 53 touches the ground. Then the mounting platform 1 is moved. When it is moved to the appropriate position, the caster 53 can be raised by rotating the support threaded rod 51 in the opposite direction, thus realizing the portable movement of the testing device.

[0055] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A device for testing critical parameters of gas explosions, comprising a mounting table (1), characterized in that, The top of the mounting platform (1) is fixedly connected to a reaction mechanism, the top of the mounting platform (1) is fixedly connected to a temperature control mechanism, the top of the mounting platform (1) is fixedly connected to an air supply mechanism connected to the reaction mechanism, the top of the mounting platform (1) is fixedly connected to a gas supply mechanism connected to the reaction mechanism, the top of the mounting platform (1) is fixedly connected to a data acquisition and control mechanism connected to the reaction mechanism, the temperature control mechanism, the gas supply mechanism and the air supply mechanism, and the bottom of the mounting platform (1) is provided with a moving mechanism; The reaction mechanism includes a reaction tank (11) fixedly connected to the mounting platform (1). An air inlet box (12) is fixedly connected to the top of the reaction tank (11). A gas inlet pipe (13) and an air inlet pipe (14) are fixedly connected to the outer surface of the air inlet box (12). The gas inlet pipe (13) and the air inlet pipe (14) are respectively connected to a gas supply mechanism and an air supply mechanism. A drive shaft (15) is rotatably connected inside the air inlet box (12). Multiple air vanes (16) are fixedly connected to the outer surface of the drive shaft (15). A stirrer is fixedly connected to the bottom end of the drive shaft (15). The bottom of the air inlet box (12) is fixedly connected to the air outlet pipe (18) which is fixedly connected to the reaction tank (11). An electromagnetic control valve is provided on the air outlet pipe (18). A safety valve (19) is fixedly connected to the top of the reaction tank (11). A temperature sensor (191) is fixedly connected to the top of the reaction tank (11). A temperature controller (192) is fixedly connected to the top of the temperature sensor (191). A pressure sensor (193) is fixedly connected to the top of the reaction tank (11). An igniter (194) is provided inside the reaction tank (11). An installation plate (111) is fixedly connected inside the reaction tank (11). A transmission pipe (112) is rotatably connected to the upper part of the installation plate (111). A fan blade (113) is fixedly sleeved on the outer surface of the transmission pipe (112). Multiple installation pipes (114) are fixedly connected to the outer surface of the transmission pipe (112). A transmission plate (115) is fixedly connected to one end of the installation pipe (114). A water tank (116) is opened inside the transmission plate (115). A water spray hole (117) is opened inside the water tank (116). A water inlet mechanism is drivenly connected to the top of the transmission pipe (112). The water inlet mechanism includes a connecting pipe (118) fixedly connected to the mounting plate (111). The bottom end of the connecting pipe (118) is rotatably connected to the top end of the transmission pipe (112). The top end of the connecting pipe (118) is fixedly connected to a water inlet pipe (119). An electromagnetic control valve is provided on the outer surface of the water inlet pipe (119).

2. The gas explosion critical parameter testing device according to claim 1, characterized in that, The temperature control mechanism includes a temperature control cover (21) fixedly connected to the mounting platform (1). Multiple electric heating plates (22) are fixedly connected inside the temperature control cover (21). An ultra-low temperature refrigeration box (23) is fixedly connected on the mounting platform (1). A fan (24) is fixedly connected to one side of the ultra-low temperature refrigeration box (23) through a pipe. One side of the fan (24) is fixedly connected to the temperature control cover (21) through a pipe. An electromagnetic control valve is installed on the pipe.

3. The gas explosion critical parameter testing device according to claim 1, characterized in that, The gas supply mechanism includes a gas storage tank (31) fixedly connected to the installation platform (1). The input end of the gas storage tank (31) is fixedly connected to a first gas booster pump (32) through a pipe. One end of the first gas booster pump (32) is fixedly connected to a first air compressor (33) through an air inlet pipe. A pressure regulating valve is provided on the air inlet pipe. The output end of the first gas booster pump (32) is fixedly connected to a first storage tank (34) fixedly connected to the installation platform (1) through an output pipe. A pressure gauge is provided on the output pipe. The top of the first storage tank (34) is connected to a gas inlet pipe (13). An electromagnetic control valve is provided on the gas inlet pipe (13). A gas flow valve is provided on the gas inlet pipe (13).

4. The gas explosion critical parameter testing device according to claim 1, characterized in that, The air supply mechanism includes an air storage tank (41) fixedly connected to the mounting platform (1). The input end of the air storage tank (41) is fixedly connected to a second gas booster pump (42) via a pipe. One end of the second gas booster pump (42) is fixedly connected to a second air compressor (43) via an air inlet pipe. A pressure regulating valve is provided on the air inlet pipe. The output end of the second gas booster pump (42) is fixedly connected to a second storage tank (44) fixedly connected to the mounting platform (1) via an output pipe. A pressure gauge is provided on the output pipe. The top of the second storage tank (44) is connected to an air inlet pipe (14). An electromagnetic control valve is provided on the air inlet pipe (14). A gas flow valve is provided on the air inlet pipe (14).

5. The gas explosion critical parameter testing device according to claim 1, characterized in that, The moving mechanism includes two support threaded rods (51) that are internally threaded to the mounting platform (1). The bottom of the support threaded rods (51) is rotatably connected to a support plate (52), and the bottom of the support plate (52) is fixedly connected to a caster wheel (53).

6. The test method of the gas explosion critical parameter testing device according to any one of claims 1-5, characterized in that, Includes the following steps: Step 1: Control the gas supply mechanism and air supply mechanism through the acquisition and control mechanism to introduce air and gas pressurized to a certain pressure coefficient into the air inlet box (12) for mixing, and then introduce them into the reaction tank (11); Step 2: Turn on the temperature control mechanism to heat or cool down the reaction vessel (11), and then use the temperature sensor (191) to detect the temperature inside the reaction vessel (11). At the same time, the temperature controller controls the temperature control mechanism to make the temperature inside the reaction vessel (11) reach the test temperature and maintain the test temperature. Step 3: The igniter is controlled by the acquisition and control mechanism to ignite the gas mixed in the reaction vessel (11). The acquisition and control mechanism then collects and analyzes the collected data to obtain the test results. Step 4: After the test is completed, high-pressure gas is supplied to the air inlet box (12) through the air supply mechanism. The high-pressure gas drives the fan blade (113) and the transmission pipe to rotate. The transmission pipe (112) drives the mounting pipe (113) and the transmission plate (115) to rotate. Then, water is supplied to the transmission pipe (112) by starting the water inlet mechanism. Water is sprayed out through the water spray hole (117) on the transmission plate (115) to rinse the carbon black and impurities inside the reaction tank (1). The rinsing water is discharged through the drain pipe at the bottom of the reaction tank (11). Then, the temperature control mechanism heats and dries the reaction tank (11).

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