An ammonia leak diffusion intervention experimental test platform

Abstract

The present invention discloses an ammonia leakage and diffusion intervention experimental test platform, which relates to the technical field of ammonia leakage and diffusion experimental test platforms. An ammonia leakage and diffusion intervention experimental test platform includes a test box, and also includes: multiple leakage sources leading to the test box, for introducing ammonia into the test box through different positions; a water curtain nozzle, arranged in the test box; the present invention changes the direction of the air outlet nozzle to simulate the effect of the water curtain on the diffusion and absorption of ammonia leakage when convection wind, vertical wind, and co-directional wind are applied to ammonia leakage. At the same time, the change in the direction of the air outlet nozzle is driven by the change in gas pressure, and the change in gas pressure is combined with the change in the direction of the air outlet nozzle to further simulate the effect of the water curtain on ammonia absorption when the natural wind is strong, and the absorption effect achieved by the water curtain on ammonia absorption suppression when the wind is strong and in the same direction as the leakage direction.

Description

Technical Field

[0001] The present invention belongs to the technical field of ammonia gas leakage and diffusion experimental test platform, and in particular relates to an ammonia gas leakage and diffusion intervention experimental test platform. Background Art

[0002] Ammonia is an important industrial raw material and is widely used. However, due to its toxicity and explosive properties, it has caused many serious accidents in industrial production. Its leakage accidents are often sudden and difficult to rescue, and can cause huge property losses and casualties in a very short time. To reduce the risk of accidents and prevent the spread of leaked ammonia, a lot of theoretical and experimental research has been done on the water curtain decontamination method for leaked ammonia. However, the current leaked ammonia decontamination experiments mostly leak a certain amount of gas in advance and then perform water curtain decontamination. The test of the effect of water curtain decontamination on leaked ammonia does not match the reality and cannot simulate the environmental weather at the time of the leak. For example, when an ammonia leak occurs, the natural wind in the environment will affect the effect of water curtain decontamination, and the natural wind will accelerate the free diffusion speed and range of ammonia. Even when the wind level is high, it will affect the formation of the water curtain. As a result, the obtained theories and data cannot effectively support the application of water curtain decontamination. To this end, an ammonia leak diffusion intervention experimental test platform is proposed. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an ammonia leakage and diffusion intervention experimental testing platform that can overcome the above problems or at least partially solve the above problems.

[0004] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: an ammonia leakage and diffusion intervention experimental test platform, including a test box, and also including: multiple leakage sources leading to the test box, for introducing the gas to be tested into the test box through different positions; a water curtain nozzle, arranged in the test box, for forming a water curtain in the test box to absorb the gas to be tested; multiple ammonia detectors, arranged in the test box, located on the side of the water curtain away from the leakage source, for testing the ammonia content in the space on the side of the water curtain away from the leakage source; an exhaust gas decontamination tank, for decontaminating the gas to be tested remaining in the test box after the test; an air inlet assembly, connected to the test box, for introducing gas into the test box, and the air inlet end of the air inlet assembly is located between the leakage source and the water curtain.

[0005] Preferably, it also includes an ammonia cylinder and a water storage tank. The ammonia cylinder is connected to the leakage source through a high-pressure resistant hose. The high-pressure resistant hose on the ammonia cylinder is respectively installed with a gas flow meter. Multiple leakage sources are respectively installed with valve one for individually controlling the opening and closing of multiple leakage sources; the water storage tank and the water curtain nozzle are connected through a high-pressure resistant hose. The high-pressure resistant hose between the water storage tank and the water curtain nozzle is respectively installed with a water pump and valve two; the exhaust fan and valve three are connected between the exhaust gas decontamination tank and the test box.

[0006] Preferably, the plurality of leakage sources are arranged horizontally; the air inlet assembly includes a speed-regulating fan, one end of the speed-regulating fan leads to the test box, and an anemometer is provided on the speed-regulating fan.

[0007] Preferably, the multiple leakage sources are arranged in a circle; the air inlet assembly includes an outer gear ring rotated by multiple planetary gears and arranged in the test box, and the upper circumference of the outer gear ring is connected to multiple air outlet nozzles, and the air outlet nozzles are supplied with gas by the main pipeline. When the main pipeline supplies the first air pressure to the air outlet nozzle, the air outlet end of the air outlet nozzle is directed toward the leakage source, forming a convection wind; when the main pipeline supplies the second air pressure to the air outlet nozzle, the air outlet end of the air outlet nozzle is perpendicular to the leakage source, forming a vertical wind; when the main pipeline supplies the third air pressure to the air outlet nozzle, the angle between the air outlet end of the air outlet nozzle and the leakage source is an acute angle, forming a same-direction wind.

[0008] Preferably, a sleeve corresponding to a plurality of air outlet nozzles is installed on the inner wall of the outer gear ring, and a piston rod is slidably connected in the sleeve, and the piston rod divides the sleeve into a first chamber and a second chamber, and a first spring is connected between the piston rod and the sleeve, one end of the piston rod passes through the outside of the sleeve, and a tail plate is installed on one end of the piston rod, and a rack is installed on the tail plate; the sleeve is connected to an air intake pipe, the air intake pipe leads to the first chamber, the air intake pipe is connected to the main pipe, and the air outlet nozzle and the first chamber are connected by a docking pipe; a spur gear is fixedly connected to one end of the air outlet nozzle, and the spur gear is meshed with the rack. When the main pipe supplies the first air pressure, the second air pressure, and the third air pressure into the sleeve respectively, the piston rod slides in the sleeve, and by pushing the rack to move and engage the spur gear to rotate, the air outlet end of the air outlet nozzle changes the direction between the air outlet nozzle and the leakage source.

[0009] Furthermore, a connecting pipe is installed on the sleeve, the connecting pipe is communicated with the second chamber, and a one-way valve is installed on the piston plate of the piston rod.

[0010] Furthermore, it also includes a connecting frame with an N-shaped frame and an arc-shaped frame at both ends respectively, the connecting frame is installed on the inner wall of the outer gear ring, the arc-shaped frame is symmetrically installed with arm rods, the spur gear is rotatably connected to the arm rods, and a support frame is installed on the arc-shaped frame, and the support frame is used to support one end of the sleeve.

[0011] Preferably, a guide rod is installed between the N-shaped frame and the arc-shaped frame, a slide is installed on the sleeve, the slide is slidably connected to the guide rod, a second spring is sleeved on the slide, the second spring is located between the arc-shaped frame and the slide, and the two ends of the second spring are respectively fixedly connected to the slide and the arc-shaped frame. When the reciprocating drive assembly drives the sleeve to slide back and forth on the connecting frame, the air outlet nozzle swings back and forth.

[0012] Preferably, the reciprocating drive assembly includes a plurality of arc-shaped mounting plates circumferentially arranged on one side of the outer gear ring, a plurality of triangular blocks are mounted on the arc-shaped mounting plates, and a triangular plate is mounted on one end of the sleeve close to the triangular block; and further includes a plurality of driving rods corresponding to the arc-shaped mounting plates arranged in the test box, the telescopic ends of the driving rods being connected to the arc-shaped mounting plates, so as to push the arc-shaped mounting plates close to the outer gear ring through the driving rods, so that the triangular plates correspond to the triangular blocks.

[0013] Furthermore, a plurality of explosion-proof motors corresponding to the driving rods are installed in the test box, and a gear part is fixedly connected to the output end of the explosion-proof motor and the outer wall of the driving rod. The two gear parts are engaged with each other. When the driving rod is driven to rotate, the slit channels between the multiple triangular blocks on the arc-shaped mounting plate are aligned with the leakage source.

[0014] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0015] 1. The ammonia leakage and diffusion intervention experimental test platform, when the leakage source introduces ammonia into the test box, the speed-controlled fan blows wind into the test box. The wind interferes with and turbulently affects the ammonia, which accelerates the diffusion speed of ammonia in the space between the leakage source and the water curtain, and the speed of ammonia passing through the water curtain is also accelerated. It is used to simulate the impact of wind on ammonia leakage in a real environment. The ammonia concentration in the space on one side of the water curtain is detected by three ammonia detectors arranged horizontally to determine the absorption effect of the water curtain on ammonia after adding the influence of wind.

[0016] 2. In another embodiment of the ammonia leakage and diffusion intervention test platform, the direction of the air outlet nozzle is changed to simulate the effect of the water curtain on the diffusion and absorption of ammonia leakage caused by convection wind, vertical wind, and co-directional wind. At the same time, the change in the direction of the air outlet nozzle is driven by the change in gas pressure. The change in gas pressure is combined with the change in the direction of the air outlet nozzle to further simulate the effect of the water curtain on ammonia absorption when the natural wind is strong, and the absorption effect achieved by the water curtain on ammonia absorption when the wind is strong and in the same direction as the leakage.

[0017] The sleeve is driven to slide back and forth, causing the air outlet nozzle to swing back and forth. This allows the sleeve to swing back and forth when passing the leakage source, disturbing the ammonia gas discharged from the leakage source, simulating the situation where the ammonia leak is in a turbulent wind environment.

[0018] By driving the driving rod to rotate and point the triangular block toward the leak source, the ammonia discharged from the leak source can pass through the narrow channels between adjacent triangular blocks, thereby increasing the impact force on the water curtain. This is used to simulate the situation when ammonia passes through narrow gaps in a real leakage environment. Combined with the absorption effect of the water curtain on ammonia, the diversity of the experiment is increased.

[0019] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In the attached figure:

[0021] Figure 1 Schematic diagram of the structure of an ammonia leakage and diffusion intervention test platform proposed by the present invention Figure 1 ;

[0022] Figure 2 Schematic diagram of the structure of an ammonia leakage and diffusion intervention test platform proposed by the present invention Figure 2 ;

[0023] Figure 3 Schematic diagram of the structure of an ammonia leakage and diffusion intervention test platform proposed by the present invention Figure 3 ;

[0024] Figure 4 This is a front view of the outer gear ring and leakage source of an ammonia leakage and diffusion intervention experimental test platform proposed by the present invention;

[0025] Figure 5 This is a schematic structural diagram of the first annular tube and the second annular tube of an ammonia leakage and diffusion intervention experimental test platform proposed by the present invention;

[0026] Figure 6This is a structural diagram of the first drive rod, gear part, and explosion-proof motor of an ammonia leakage and diffusion intervention experimental test platform proposed by the present invention;

[0027] Figure 7 This is a schematic structural diagram of a sleeve for an ammonia leakage and diffusion intervention experimental test platform proposed by the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of the spur gear and rack of the ammonia leakage and diffusion intervention experimental test platform proposed by the present invention;

[0029] Figure 9 This is a structural diagram of the guide rod, slide seat, and second spring of an ammonia leakage and diffusion intervention experimental test platform proposed by the present invention;

[0030] Figure 10 This is a structural diagram of the piston rod, first chamber, and second chamber of an ammonia leakage and diffusion intervention experimental test platform proposed by the present invention;

[0031] Figure 11 This is a schematic diagram of the air outlet nozzle facing the leakage source;

[0032] Figure 12 This is a schematic diagram of the air outlet nozzle being perpendicular to the leakage source;

[0033] Figure 13 This is a schematic diagram showing that the air outlet nozzle and the leakage source are in the same direction;

[0034] Figure 14 Schematic diagram of the slit channel relative to the leakage source;

[0035] Figure 15 This is a structural schematic diagram of the arc-shaped mounting plate and triangular blocks of an ammonia leakage and diffusion intervention experimental test platform proposed by the present invention.

[0036] Figure: 1. Test chamber; 11. Ammonia cylinder; 111. Gas flow meter; 112. Valve 1; 113. Leak source; 12. Speed-controlled fan; 121. Anemometer; 13. Water storage tank; 131. Water pump; 132. Valve 2; 133. Water curtain nozzle; 134. Water curtain; 14. Ammonia detector; 15. Chamber door; 16. Exhaust gas scrubber; 161. Exhaust fan; 162. Valve 3.

[0037] 2. Main pipe; 21. Outer ring gear; 211. Planetary gear; 212. Stop plate; 22. Connecting frame; 221. N-shaped frame; 222. Curved frame; 223. Arm; 23. Sleeve; 2301. First chamber; 2302. Second chamber; 231. Piston rod; 232. First spring; 233. One-way valve; 234. Tail plate; 235. Rack; 24. Spur gear; 241. Exhaust nozzle Head; 242, docking tube; 243, air intake pipe; 244, support frame; 245, first annular tube; 25, connecting tube; 251, second annular tube; 252, sleeve; 26, guide rod; 261, slide seat; 262, second spring; 27, triangular plate; 270, slit channel; 271, drive rod; 272, arc-shaped mounting plate; 273, triangular block; 274, explosion-proof motor; 275, gear part. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0039] The following is combined with Figure 1 -Attached Figure 15 , describes in detail the technical solutions provided by each embodiment of the present invention.

[0040] Example 1: Reference Figure 1 An ammonia leakage and diffusion intervention test platform includes a test box 1, and also includes: multiple leakage sources 113 leading to the test box 1, for introducing the gas to be tested into the test box 1 through different positions; a water curtain nozzle 133, arranged in the test box 1, for forming a water curtain 134 in the test box 1 to absorb the gas to be tested; multiple ammonia detectors 14, arranged in the test box 1, located on the side of the water curtain 134 away from the leakage source 113, for testing the ammonia content in the space on the side of the water curtain 134 away from the leakage source 113 Preferably, three ammonia detectors 14 are provided and arranged in the test box 1 along the length direction of the test box 1 to respectively detect the ammonia concentration at different positions away from the water curtain 134. The spacing between the three ammonia detectors 14 can be set according to the experimental requirements; the exhaust gas scrubbing tank 16 is used to scrub the residual tested gas in the test box 1 after the test; the air inlet assembly is connected to the test box 1 to introduce gas into the test box 1, and the air inlet end of the air inlet assembly is located between the leakage source 113 and the water curtain 134;

[0041] It also includes an ammonia cylinder 11 and a water tank 13. The ammonia cylinder 11 is connected to the leakage source 113 through a high-pressure hose. The high-pressure hose on the ammonia cylinder 11 is respectively installed with a gas flow meter 111. The multiple leakage sources 113 are respectively installed with a valve 112 for individually controlling the opening and closing of the multiple leakage sources 113. The ammonia cylinder 11 is also equipped with a pressure reducing valve; the water tank 13 and the water curtain nozzle 133 are connected through a high-pressure hose. The high-pressure hose between the water tank 13 and the water curtain nozzle 133 is respectively installed with a water pump 131 and a valve 2 132; an exhaust fan 161 and a valve 3 162 are connected between the exhaust gas scrubbing tank 16 and the test box 1. It should be noted that the pumping pressure of the water pump 131 is adjustable;

[0042] The plurality of leakage sources 113 are arranged horizontally, and the number of the leakage sources 113 is preferably set to three; the air inlet assembly includes a speed-regulating fan 12, the air volume of the speed-regulating fan 12 can be adjusted, one end of the speed-regulating fan 12 leads to the test box 1, and an anemometer 121 is provided on the speed-regulating fan 12;

[0043] Before the test experiment begins, staff must wear safety protective gear in strict accordance with the requirements of the ammonia leakage experiment and strictly abide by the ammonia leakage experiment rules and regulations to avoid safety accidents.

[0044] In this embodiment, when the test platform is in use, the valve 112 connected to the ammonia cylinder 11 is opened, and the ammonia gas in the ammonia cylinder 11 passes through the gas flow meter 111 and the valve 112 and is introduced into the test box 1 from the leakage source 113;

[0045] By starting the water pump 131, water in the water tank 13 is pumped into the water curtain nozzle 133 and sprayed out by the water curtain nozzle 133. It should be understood that the water curtain nozzles 133 are arranged in a plurality of arrays in the width direction of the test box 1, thereby forming a water curtain 134 with the same width as the test box 1;

[0046] By starting the speed-regulating fan 12, the speed-regulating fan 12 blows air into the test box 1, and the anemometer 121 is used to detect the air volume of the speed-regulating fan 12 for data recording and data comparison;

[0047] When the leakage source 113 introduces ammonia into the test box 1, the speed-controlled fan 12 blows wind into the test box 1. The wind interferes with and turbulently affects the ammonia, accelerating the diffusion rate of the ammonia in the space between the leakage source 113 and the water curtain 134, and the speed at which the ammonia passes through the water curtain 134 is also accelerated. This is used to simulate the effect of wind on ammonia leakage in a real environment. The ammonia concentration in the space on one side of the water curtain 134 is detected by three horizontally arranged ammonia detectors 14 to determine the absorption effect of the water curtain 134 on ammonia after adding the influence of wind.

[0048] Furthermore, three leakage sources 113 are horizontally arranged at one end of the test box 1. Each leakage source 113 is controlled by a separate valve 112 to change the position at which ammonia gas is introduced into the test box 1, thereby increasing the number of test methods, thereby increasing the diversity of ammonia gas leakage and diffusion test data, and facilitating multi-data comparison.

[0049] After the test is completed, the valve 112 is closed, the speed regulating fan 12 is turned off, the exhaust fan 161 and the valve 3 162 are opened, and the residual ammonia in the test box 1 is exhausted to the waste gas cleaning tank 16 by the exhaust fan 161 to clean the residual ammonia. When the ammonia detector 14 detects that the ammonia in the test box 1 is at a safe value, the test is ended.

[0050] Furthermore, the test box 1 is provided with a plurality of doors 15 on one side in the length direction. The specific number of the doors 15 can be freely set according to the length of the test box 1. A sealing rubber ring is provided between the door 15 and the test box 1 for sealing to prevent ammonia from leaking from the door 15. The main function of the door 15 is to facilitate the removal of the ammonia detector 14 and the anemometer 121 in the test box 1, and at the same time facilitate the placement of the drain pipe into the test box 1 to pump out the water in the test box 1 for the next round of test experiments.

[0051] It should be noted that the connections between the components in this device and the test box 1 are all sealed.

[0052] Example 2: Reference Figure 2-Figure 15 An ammonia leakage and diffusion intervention test platform includes a test box 1, and also includes: multiple leakage sources 113 leading to the test box 1, for introducing the gas to be tested into the test box 1 through different positions; a water curtain nozzle 133, arranged in the test box 1, for forming a water curtain 134 in the test box 1 to absorb the gas to be tested; multiple ammonia detectors 14, arranged in the test box 1, located on the side of the water curtain 134 away from the leakage source 113, for testing the ammonia content in the space on the side of the water curtain 134 away from the leakage source 113 Preferably, three ammonia detectors 14 are provided and arranged in the test box 1 along the length direction of the test box 1 to respectively detect the ammonia concentration at different positions away from the water curtain 134. The spacing between the three ammonia detectors 14 can be set according to the experimental requirements; the exhaust gas scrubbing tank 16 is used to scrub the residual tested gas in the test box 1 after the test; the air inlet assembly is connected to the test box 1 to introduce gas into the test box 1, and the air inlet end of the air inlet assembly is located between the leakage source 113 and the water curtain 134;

[0053] It also includes an ammonia cylinder 11 and a water tank 13. The ammonia cylinder 11 is connected to the leakage source 113 through a high-pressure hose. The high-pressure hose on the ammonia cylinder 11 is respectively installed with a gas flow meter 111. The multiple leakage sources 113 are respectively installed with a valve 112 for individually controlling the opening and closing of the multiple leakage sources 113. The ammonia cylinder 11 is also installed with a pressure reducing valve; the water tank 13 and the water curtain nozzle 133 are connected through a high-pressure hose. The high-pressure hose between the water tank 13 and the water curtain nozzle 133 is respectively installed with a water pump 131 and a valve 2 132; an exhaust fan 161 and a valve 3 162 are connected between the exhaust gas scrubbing tank 16 and the test box 1. Furthermore,

[0054] Multiple leakage sources 113 are arranged in a circular pattern; the air inlet assembly includes an outer gear ring 21 rotatably arranged in the test box 1 by multiple planetary gears 211, and four planetary gears 211 are provided, and the circumferential portion is on the outer periphery of the outer gear ring 21 and meshes with the outer gear ring 21. The planetary gears 211 are rotatably connected to the connecting shaft, and the connecting shaft is fixedly installed on the inner wall of the test box 1. The connecting shaft is located on both sides of the planetary gear 211 and is fixedly connected to a limit plate 212. One end of the limit plate 212 extends to both sides of the outer gear ring 21 to limit the outer gear ring 21 to prevent the outer gear ring 21 from displacement. One of the planetary gears 211 is controlled to rotate by a motor, and the motor adopts an explosion-proof type. Multiple air outlet nozzles 241 are connected to the circumference of the outer gear ring 21, and the air outlet nozzles 241 are supplied with gas by the main pipeline 2.

[0055] When the main pipe 2 supplies the first air pressure to the air outlet nozzle 241, the air outlet end of the air outlet nozzle 241 is directed toward the leakage source 113, forming a convection wind;

[0056] When the main pipe 2 supplies the second air pressure to the air outlet nozzle 241, the air outlet end of the air outlet nozzle 241 is perpendicular to the leakage source 113, forming a vertical wind;

[0057] When the main pipeline 2 supplies the third air pressure to the air outlet nozzle 241 , the angle between the air outlet end of the air outlet nozzle 241 and the leakage source 113 is acute, forming a same-direction wind.

[0058] A sleeve 23 is installed on the inner wall of the outer gear ring 21, which corresponds to a plurality of air outlet nozzles 241 respectively. A piston rod 231 is slidably connected to the sleeve 23, and the piston rod 231 divides the sleeve 23 into a first chamber 2301 and a second chamber 2302. A first spring 232 is connected between the piston rod 231 and the sleeve 23. One end of the piston rod 231 passes through the outside of the sleeve 23, and a tail plate 234 is installed on one end of the piston rod 231, and a rack 235 is installed on the tail plate 234; an air intake pipe 243 is connected to the sleeve 23, and the air intake pipe 243 leads to the first chamber 2301. The air intake pipe 243 is connected to the main pipeline 2, and a first annular pipe 245 is installed on the outer gear ring 21. The air intake pipe 243 is connected to the first annular pipe 245, and a plurality of connecting pipes 1 are connected to the first annular pipe 245, and the connecting pipe 1 is fixed to the first annular pipe 245. The first annular tube 245 and the first connecting tube 1 rotate together with the outer gear ring 21, and the first annular tube 245 and the first connecting tube 1 rotate together with the outer gear ring 21, and the main pipeline 2 can normally supply air to the first annular tube 245. The air outlet nozzle 241 is connected to the first chamber 2301 through the docking tube 242. A spur gear 24 is fixedly connected to one end of the air outlet nozzle 241, and the spur gear 24 is meshed with the rack 235. When the main pipeline 2 supplies the first air pressure, the second air pressure, and the third air pressure into the sleeve 23 respectively, the piston rod 231 slides in the sleeve 23, and by pushing the rack 235 to move and meshing the spur gear 24 to rotate, the air outlet end of the air outlet nozzle 241 is driven to change the direction between the leakage source 113.

[0059] The main pipe 2 and the sleeve 252 are respectively connected to the outlet of the external air compressor and are opened and closed by separate valves. The planetary gear 211 is driven by a motor to rotate, thereby driving the outer ring gear 21 to rotate. The outlet nozzle 241 is set on the outer ring gear 21. Therefore, when the outer ring gear 21 rotates, the outlet nozzle 241 is also driven to rotate. In the initial state, the outlet end of the outlet nozzle 241 is facing the location of the leakage source 113.

[0060] During operation, the air compressor pumps gas into the main pipeline 2, which enters the first annular pipe 245 through the connecting pipe 1 in turn, and then enters the first chamber 2301 through the air inlet pipe 243. The gas pressure on the air compressor controls the valve to supply the first air pressure to the main pipeline 2. After entering the first chamber 2301, the first air pressure enters the air outlet nozzle 241 through the docking pipe 242 and is discharged. When the first air pressure is filled into the first chamber 2301, the first air pressure will not push the piston rod 231 to slide in the sleeve 23, so the air outlet end of the air outlet nozzle 241 will face the leakage source 113. Since the three leakage sources 113 arranged circumferentially are coaxial with the outer ring gear 21, the multiple air outlet nozzles 241 on the outer ring gear 21 will circulate and blow air onto the leakage source 113 (it should be noted that the opening and closing of the three leakage sources 113 are opened in sequence, in pairs, or at the same time according to the experimental process).

[0061] When the air outlet nozzle 241 blows air toward the leakage source 113, it simulates the real environment, where the wind direction in the environment forms a relative convection wind with the leakage source 113;

[0062] When the second air pressure is supplied to the first chamber 2301, the second air pressure will push the piston rod 231 to slide in the sleeve 23. At this time, the sliding of the piston rod 231 will drive the rack 235 to move, and during the movement, the meshing will drive the spur gear 24 to rotate. The rotation of the spur gear 24 will drive the air outlet nozzle 241 to rotate, thereby changing the direction of one end of the air outlet nozzle 241. The injection of the second air pressure will cause the air outlet end of the air outlet nozzle 241 and the ammonia discharged from the leakage source 113 to form a vertical wind, thereby interfering with and disturbing the ammonia discharged from the leakage source 113, improving the diffusion efficiency, and increasing the air pressure in the space between the leakage source 113 and the water curtain 134, thereby effectively analyzing the effect of the water curtain 134 on ammonia absorption when the natural wind is strong.

[0063] When the third air pressure is supplied to the first chamber 2301, the air pressure in the first chamber 2301 increases compared to the second air pressure, causing the piston rod 231 to be pushed for a longer distance. At this time, after the rack 235 moves a longer distance, the rotation angle of the air outlet nozzle 241 will form an acute angle with the leakage source 113, so that the gas discharged from the air outlet nozzle 241 and the leakage source 113 tend to be in the same direction, simulating the natural wind direction in the environment and the ammonia gas in a real leakage environment. This strengthens the impact of the ammonia gas on the water curtain 134, further simulating the effect of the water curtain 134 on ammonia gas absorption when ammonia gas leaks in a real environment.

[0064] At the same time, during the charging of the third air pressure, the air outlet nozzle 241 forms an acute angle with the leakage source 113. The outer gear ring 21 is provided with multiple air outlet nozzles 241, and the multiple air outlet nozzles 241 are oriented in the same direction. Therefore, the air discharged by the air outlet nozzles 241 will converge toward the axis of the outer gear ring 21. This causes the ammonia discharged from the leakage source 113 to be accelerated by the gas discharged by the air outlet nozzles 241 and rush toward the water curtain 134, forming an impact on the water curtain 134. This can further simulate the absorption effect achieved by the water curtain 134 on suppressing ammonia absorption in a real environment when the wind is strong and in the same direction as the leakage, and conduct experimental testing.

[0065] Therefore, in this embodiment, the direction of the air outlet nozzle 241 is adjusted to simulate the effects of the water curtain 134 on the diffusion and absorption of ammonia gas leakage caused by convection wind, vertical wind, and co-directional wind. At the same time, the change in the direction of the air outlet nozzle 241 is driven by the change in gas pressure, and the change in gas pressure is combined with the change in the direction of the air outlet nozzle 241 to further simulate the effect of the water curtain 134 on ammonia absorption when the natural wind is strong, and the absorption effect achieved by the water curtain 134 on suppressing ammonia absorption when the wind is strong and in the same direction as the leakage direction.

[0066] It should be understood that the first air pressure < the second air pressure < the third air pressure.

[0067] Furthermore, a connecting pipe 25 is installed on the sleeve 23, and the connecting pipe 25 is connected to the second chamber 2302. A one-way valve 233 is installed on the piston plate of the piston rod 231. A second annular pipe 251 is installed on the outer ring gear 21. The connecting pipe 25 is connected to the second annular pipe 251. The second annular pipe 251 is fixedly connected to multiple connecting pipes 2, and the connecting pipes 2 also extend toward the axis of the outer ring gear 21. A sleeve 252 is sleeved on the outer periphery of the main pipe 2. Both ends of the sleeve 252 are closed and rotate on the sleeve 252. Two adapter rings are connected, and multiple connecting pipes 2 are connected to the adapter ring close to the outer gear ring 21. Both adapter rings are hollow and connected to the openings on the outer circumference of the sleeve 252. The adapter ring away from the outer gear ring 21 is connected to a supply pipe for supplying liquid or gas into the sleeve 252, which then enters the connecting pipe 2 through the sleeve 252. Therefore, when the outer gear ring 21 rotates, the second annular pipe 251 and the connecting pipe 2 will rotate with the outer gear ring 21, and the sleeve 252 can normally supply gas or liquid to the connecting pipe 25;

[0068] One end of the sleeve 252 is connected to the water storage tank 13 via a high-pressure hose and is provided with a water pump body;

[0069] When water is pumped into the sleeve 252, the water is sequentially pumped into the second chamber 2302 through the connecting pipe 2, the second annular pipe 251, and the connecting pipe 25. Since a one-way valve 233 is installed on the piston plate of the piston rod 231, the water in the second chamber 2302 enters the first chamber 2301 and is discharged through the air outlet nozzle 241. This can simulate the experimental effects of ammonia leakage and diffusion under wind, rain, and different wind speeds in a rainy environment during the experimental test, and further simulate the absorption of ammonia leakage by the water curtain 134 under real conditions.

[0070] It should be noted that when the connecting pipe 25 pumps water into the second chamber 2302, the first air pressure, the second air pressure, and the second air pressure mentioned in the above experiment need to be adjusted accordingly to avoid the increase in resistance to the sliding of the piston rod 231 after the water is injected into the second chamber 2302, thereby shortening the sliding stroke of the piston rod 231.

[0071] Example 3: Reference Figure 2-Figure 15 An ammonia leakage and diffusion intervention test platform is basically the same as Example 2, further comprising: a connecting frame 22 with an N-shaped frame 221 and an arc frame 222 at both ends, the connecting frame 22 being mounted on the inner wall of the outer gear ring 21, an arm 223 being symmetrically mounted on the arc frame 222, a spur gear 24 being rotatably connected to the arm 223, a support frame 244 being mounted on the arc frame 222, and the support frame 244 being used to support one end of the sleeve 23;

[0072] A guide rod 26 is installed between the N-shaped frame 221 and the curved frame 222. A slide 261 is installed on the sleeve 23. The slide 261 is slidably connected to the guide rod 26. A second spring 262 is sleeved on the slide 261. The second spring 262 is located between the curved frame 222 and the slide 261, and the two ends of the second spring 262 are fixedly connected to the slide 261 and the curved frame 222 respectively. When the reciprocating drive assembly drives the sleeve 23 to slide back and forth on the connecting frame 22, the air outlet nozzle 241 swings back and forth.

[0073] The reciprocating drive assembly includes a plurality of arc-shaped mounting plates 272 circumferentially arranged on one side of the outer gear ring 21, a plurality of triangular blocks 273 are mounted on the arc-shaped mounting plates 272, and a triangular plate 27 is mounted on one end of the sleeve 23 close to the triangular block 273; it also includes a plurality of driving rods 271 corresponding to the arc-shaped mounting plates 272 arranged in the test box 1, and the telescopic ends of the driving rods 271 are connected to the arc-shaped mounting plates 272, so as to push the arc-shaped mounting plates 272 close to the outer gear ring 21 through the driving rods 271, so that the triangular plates 27 correspond to the triangular blocks 273.

[0074] In this embodiment, when the driving rod 271 pushes the arc-shaped mounting plate 272 close to the outer gear ring 21, the outer gear ring 21 rotates, which drives the triangular plate 27 on the sleeve 23 close to the triangular block 273. Through the arc surfaces on the triangular plate 27 and the triangular block 273, the sleeve 23 slides on the guide rod 26 and squeezes the second spring 262. When the sleeve 23 slides, it drives the piston rod 231 and the rack 235 to move, driving the gas outlet nozzle 241 to swing back and forth. This allows the gas outlet nozzle 241 to swing back and forth when the sleeve 23 passes the leakage source 113, thereby disturbing the ammonia gas discharged from the leakage source 113, simulating the situation where the ammonia leakage is in a turbulent wind environment;

[0075] It should be understood that the diameter of the second spring 262 is larger than that of the first spring 232 . Therefore, when gas is introduced into the first chamber 2301 , the reaction force generated by the rotation of the driving spur gear 24 does not cause the sleeve 23 to undergo a large displacement.

[0076] When the driving rod 271 is activated, the three leakage sources 113 can also be opened at the same time to increase the amount of ammonia gas introduced into the test box 1, and cooperate with the swing of the gas outlet nozzle 241 to achieve a turbulent flow effect;

[0077] Furthermore, to prevent the piston rod 231 from being unable to return to its original position in time due to the friction between the rack 235 and the spur gear 24 when the sleeve 23 is reset by the second spring 262, gas or liquid can be injected into the second chamber 2302 through the connecting pipe 25 to fill the second chamber 2302, so that the piston rod 231 can slide back and forth with the sleeve 23. During the reciprocating sliding of the sleeve 23, the pressure of the gas filled in the first chamber 2301 can be adjusted according to actual needs.

[0078] The driving rod 271 is a hydraulic rod, a cylinder or an electric telescopic rod.

[0079] Example 4: Reference Figure 14 、 Figure 15 An ammonia leakage and diffusion intervention test platform is substantially the same as that of Example 3, except that: a plurality of explosion-proof motors 274 corresponding to drive rods 271 are installed in the test box 1, and a gear member 275 is fixedly connected to the output end of the explosion-proof motor 274 and the outer wall of the drive rod 271. The two gear members 275 are engaged. When the drive rod 271 is driven to rotate, the slit channels 270 between the plurality of triangular blocks 273 on the arc-shaped mounting plate 272 are aligned with the leakage source 113;

[0080] The explosion-proof motor 274 is installed in the test box 1 through a bracket. At the same time, the driving rod 271 is rotatably connected to the bracket. When the driving rod 271 does not push the arc-shaped mounting plate 272 close to the outer ring gear 21, the explosion-proof motor 274 drives the driving rod 271 to rotate 90 degrees, and the triangular block 273 is directed toward the leakage source 113, so that the ammonia discharged from the leakage source 113 can pass through the slit channel 270 between adjacent triangular blocks 273, thereby increasing the impact force on the water curtain 134, so as to simulate the situation when ammonia passes through a narrow gap in a real leakage environment, and combined with the absorption effect of the water curtain 134 on ammonia, thereby increasing the diversity of the experiment.

[0081] It should be noted that the connections between the components in this device and the test box 1 are all sealed.

[0082] The present invention simulates the effects of the water curtain 134 on ammonia leakage diffusion and absorption by convection wind, vertical wind, and co-directional wind on ammonia leakage by changing the direction of the air outlet nozzle 241. Furthermore, the change in the direction of the air outlet nozzle 241 is driven by changes in gas pressure, and the changes in gas pressure, combined with the change in the direction of the air outlet nozzle 241, further simulates the ammonia absorption effect of the water curtain 134 when natural wind is strong, as well as the absorption effect achieved by the water curtain 134 when the wind is strong and in the same direction as the leakage.

[0083] The sleeve 23 is driven to slide back and forth, causing the air outlet nozzle 241 to swing back and forth. This allows the sleeve 23 to swing back and forth when passing the leakage source 113, thereby disturbing the ammonia gas discharged from the leakage source 113, simulating the situation where the ammonia gas leaks in a turbulent wind environment.

[0084] By driving the driving rod 271 to rotate, the triangular block 273 is directed toward the leakage source 113, so that the ammonia discharged from the leakage source 113 can pass through the narrow channel 270 between adjacent triangular blocks 273, thereby increasing the impact force on the water curtain 134, so as to simulate the situation when ammonia passes through a narrow gap in a real leakage environment, and combined with the absorption effect of the water curtain 134 on ammonia, the diversity of the experiment is increased.

[0085] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the present invention can make slight changes or modifications to equivalent embodiments using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. An ammonia leakage and diffusion intervention test platform, comprising a test box, characterized in that: Also includes: multiple leak sources leading to the test box, for discharging test gas into the test box through different locations; a water curtain nozzle, disposed in the test box, for forming a water curtain in the test box to absorb the test gas; A plurality of ammonia detectors are provided in the test box and are located on a side of the water curtain away from the leakage source, for testing the ammonia content in the space on the side of the water curtain away from the leakage source; An exhaust gas decontamination tank, used to decontaminate the test gas remaining in the test box after the test; an air inlet assembly, connected to the test box, for introducing gas into the test box, wherein the air inlet end of the air inlet assembly is located between the leakage source and the water curtain; The plurality of leakage sources are arranged in a circumference; The air inlet assembly includes an outer gear ring that is rotated by multiple planetary gears and is set in the test box. The outer gear ring is connected to a plurality of air outlet nozzles on the circumference. The air outlet nozzles are supplied with gas from the main pipeline. When the main pipeline supplies the first air pressure to the air outlet nozzle, the air outlet end of the air outlet nozzle is directed toward the leakage source to form convection wind; When the main pipeline supplies the second air pressure to the air outlet nozzle, the air outlet end of the air outlet nozzle is perpendicular to the leakage source, forming a vertical wind; When the main pipeline supplies the third air pressure to the air outlet nozzle, the angle between the air outlet end of the air outlet nozzle and the leakage source is acute, forming a same-direction wind; Sleeves corresponding to the plurality of air outlet nozzles are mounted on the inner wall of the outer gear ring, a piston rod is slidably connected to the sleeve, the piston rod divides the sleeve into a first chamber and a second chamber, a first spring is connected between the piston rod and the sleeve, one end of the piston rod passes through the outside of the sleeve, a tail plate is mounted on one end of the piston rod, and a rack is mounted on the tail plate; The sleeve is connected to an air inlet pipe, which leads to the first chamber and is connected to the main pipeline. The air outlet nozzle is connected to the first chamber via a butt joint. A spur gear is fixedly connected to one end of the air outlet nozzle, and the spur gear is meshed with the rack. When the main pipeline supplies the first air pressure, the second air pressure, and the third air pressure into the sleeve respectively, the piston rod slides in the sleeve, pushing the rack to move and engaging the spur gear to rotate, thereby driving the outlet end of the air outlet nozzle to change the direction between it and the leakage source.

2. The ammonia leakage and diffusion intervention test platform according to claim 1 is characterized in that: It also includes an ammonia cylinder and a water storage tank, wherein the ammonia cylinder is connected to the leakage source through a high-pressure hose, and the high-pressure hose on the ammonia cylinder is respectively installed with a gas flow meter, and a valve is respectively installed on each of the plurality of leakage sources to individually control the opening and closing of the plurality of leakage sources; The water storage tank and the water curtain nozzle are connected via a high-pressure hose, and a water pump and a second valve are installed on the high-pressure hose between the water storage tank and the water curtain nozzle; An exhaust fan and valve three are connected between the waste gas cleaning tank and the test box.

3. An ammonia leakage and diffusion intervention test platform according to claim 2 or 1, characterized in that: The plurality of leakage sources are arranged horizontally; The air inlet assembly includes a speed-regulating fan, one end of which leads to the test box, and an anemometer is provided on the speed-regulating fan.

4. The ammonia leakage and diffusion intervention test platform according to claim 1 is characterized in that: A connecting pipe is installed on the sleeve, and the connecting pipe is communicated with the second chamber. A one-way valve is installed on the piston plate of the piston rod.

5. The ammonia leakage and diffusion intervention test platform according to claim 2 is characterized in that: It also includes a connecting frame with an N-shaped frame and an arc-shaped frame at both ends respectively. The connecting frame is installed on the inner wall of the outer gear ring. Arms are symmetrically installed on the arc-shaped frame. The spur gear is rotatably connected to the arm. A support frame is installed on the arc-shaped frame, and the support frame is used to support one end of the sleeve.

6. The ammonia leakage and diffusion intervention test platform according to claim 5 is characterized in that: A guide rod is installed between the N-shaped frame and the arc-shaped frame, a slide is installed on the sleeve, the slide is slidably connected to the guide rod, a second spring is sleeved on the slide, the second spring is located between the arc-shaped frame and the slide, and the two ends of the second spring are fixedly connected to the slide and the arc-shaped frame respectively. When the reciprocating drive assembly drives the sleeve to slide reciprocally on the connecting frame, the air outlet nozzle swings reciprocally.

7. The ammonia leakage and diffusion intervention test platform according to claim 6, characterized in that: The reciprocating drive assembly includes a plurality of arc-shaped mounting plates circumferentially arranged on one side of the outer gear ring, a plurality of triangular blocks are mounted on the arc-shaped mounting plates, and a triangular plate is mounted on one end of the sleeve close to the triangular block; It also includes a plurality of driving rods corresponding to the arc-shaped mounting plate arranged in the test box, and the telescopic ends of the driving rods are connected to the arc-shaped mounting plate, which are used to push the arc-shaped mounting plate close to the outer gear ring through the driving rods so that the triangular plate corresponds to the triangular block.

8. The ammonia leakage and diffusion intervention test platform according to claim 7 is characterized in that: Multiple explosion-proof motors corresponding to the drive rods are installed in the test box. Gear parts are fixedly connected to the output ends of the explosion-proof motors and the outer walls of the drive rods. The two gear parts are engaged with each other. When the drive rod is driven to rotate, the slit channels between the multiple triangular blocks on the arc-shaped mounting plate are aligned with the leakage source.

Images