Hydrogen gas leakage detection and early warning equipment and use method thereof

Abstract

The invention belongs to the field of hydrogen gas detection, and particularly relates to hydrogen gas leakage detection early warning equipment and a use method thereof.The hydrogen gas leakage detection early warning equipment comprises a base, the overlook face of the base is concave, the top of the base is fixedly connected with a supporting plate, one side of the supporting plate is fixedly connected with a top plate, and the bottom of the top plate is fixedly connected with a first gas inlet pipeline; the outer wall of the first air inlet pipeline is in sliding connection with a second air inlet pipeline; according to the hydrogen gas leakage detection and early warning equipment and the using method thereof, air near a hydrogen refueling station is pumped into the first gas inlet pipeline through the exhaust fan, detection is conducted through the hydrogen sensor, and when hydrogen leakage is detected, an alarm is given through the buzzer alarm; air exhausted by the first air inlet pipeline enters the cavity and is filtered through the palladium asbestos, hydrogen in the air is purified, the danger of explosion is prevented, meanwhile, the palladium asbestos absorbing the hydrogen becomes black, and a hydrogenation driver needs to drive away from the hydrogen refueling station in time when discovering that the palladium asbestos becomes black or the buzzer alarm gives an alarm.

Description

Technical Field

[0001] The invention belongs to the field of hydrogen gas detection, in particular to a hydrogen gas leakage detection and early warning device and a use method thereof. Background Art

[0002] Hydrogen refueling stations are important facilities for replenishing hydrogen fuel for hydrogen-powered vehicles. They often store large amounts of high-pressure hydrogen. Once a leak occurs, it will pose a serious threat to the safety of life and property around the hydrogen refueling station. Therefore, it is necessary to conduct real-time monitoring of the hydrogen storage device.

[0003] In the existing technology, hydrogen sensors are generally installed in hydrogen refueling stations to detect whether hydrogen is leaking. However, a single hydrogen sensor is prone to failure. It is difficult to detect the leaked hydrogen in time when a failure occurs. Once hydrogen leaks, any sparks around it can easily cause an explosion. The existing technology is not convenient for handling the leaked hydrogen at the hydrogen refueling station, resulting in insufficient safety of the hydrogen refueling station, which greatly threatens the safety of operators and hydrogen energy vehicle drivers in the hydrogen refueling station.

[0004] To this end, the present invention provides a hydrogen gas leakage detection and early warning device and a method for using the same. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art and solve the problem that a single hydrogen sensor is prone to malfunction and it is difficult to detect the leaked hydrogen in time when a fault occurs, and once hydrogen leaks, all sparks around it are likely to cause an explosion, the prior art is not convenient for handling the leaked hydrogen at the hydrogen filling station, resulting in insufficient safety of the hydrogen filling station, which greatly threatens the safety of the operators in the hydrogen filling station and the drivers of hydrogen energy vehicles, the present invention proposes a hydrogen gas leak detection and warning device and a method for using the same.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a hydrogen gas leakage detection and early warning device described in the present invention comprises a base, the top surface of the base is set to be concave, the top of the base is fixedly connected to a support plate, one side of the support plate is fixedly connected to a top plate, the bottom of the top plate is fixedly connected to a first air intake pipe, the outer wall of the first air intake pipe is slidably connected to a second air intake pipe, the bottom of the second air intake pipe is fixedly connected to an air intake hopper, the bottom of the air intake hopper is fixedly connected to a filter plate, the outer wall of the first air intake pipe is fixedly connected to a limiting block, the inner wall of the second air intake pipe is provided with a limiting groove, the limiting block fits the inner wall of the limiting groove, the bottom of the top plate is fixedly connected to an exhaust fan, the output end of the exhaust fan is connected to a first exhaust pipe, the first exhaust pipe is communicated with the first air intake pipe, the inner wall of the first air intake pipe is provided with a hydrogen sensor, and the bottom of the top plate is fixedly connected to a buzzer alarm.

[0007] Preferably, two cavities are symmetrically opened inside the support plate, and the inner walls of the two cavities are fixedly connected with air outlet pipes, and the air outlet pipes extend to the outside of the support plate. The outer wall of the support plate is provided with a transparent cover plate used in conjunction with the cavity, and one end of the first exhaust pipe is symmetrically fixedly connected with two second exhaust pipes, and the two second exhaust pipes extend to the interiors of the two cavities respectively.

[0008] Preferably, a collecting cavity is provided inside the base, a first U-shaped groove is provided inside the base and on the outer wall located at the collecting cavity, a second U-shaped groove is provided inside the base and on one end of the first U-shaped groove, a reciprocating screw is rotatably connected to the inner wall of the support plate, a slider is connected to the outer wall of the reciprocating screw through a screw nut pair, the slider is slidably connected to the support plate, a ring is fixedly connected to one end of the slider, an air outlet groove is provided on the inner wall of the ring, the air outlet groove is arranged in a ring shape, a plurality of air outlets are equidistantly provided on the outer wall of the ring, the air outlets are communicated with the air outlet groove, a connecting pipe is fixedly connected to the bottom of the ring, one end of the connecting pipe extends to the inside of the second U-shaped groove, and an air outlet assembly is provided on the top of the base.

[0009] Preferably, the air outlet assembly includes a sleeve, which is fixedly mounted on the top of the base, the bottom of the sleeve is communicated with the first U-shaped groove, the inner wall of the sleeve is slidably connected to a piston plate, the top of the piston plate is fixedly connected to a piston rod, the top of the piston rod passes through the sleeve, and two one-way valves are provided on the inner wall of the first U-shaped groove, the two one-way valves are symmetrically installed with the sleeve as the center and are both opened to the inner recess of the base, and the outer wall of the support plate is provided with a driving unit.

[0010] Preferably, the driving unit includes a motor, which is fixedly mounted on one side of the support plate, the output end of the motor extends to the interior of the support plate and is fixedly connected to the first bevel gear, the outer wall of the reciprocating screw is fixedly connected to the second bevel gear, the first bevel gear is meshingly connected to the second bevel gear, the other side of the support plate is rotatably connected to a rotating shaft, one end of the rotating shaft is fixedly connected to a crank, the outer wall of the crank is rotatably connected to a connecting shaft, the connecting shaft is rotatably connected to the piston rod, the other end of the rotating shaft extends to the interior of the support plate and is fixedly connected to a third bevel gear, the third bevel gear is meshingly connected to the second bevel gear.

[0011] Preferably, a plurality of guide plates are fixedly connected at equal intervals inside the air outlet groove, and the guide plates are fixedly installed on one side of the air outlet and are installed at an angle. Two guide plates are symmetrically fixedly connected to the inner wall of the ring and one side close to the air outlet, the guide plate located above is tilted upward, and the guide plate located below is tilted downward, and the guide plates are arranged to be arc-shaped.

[0012] Preferably, a heating wire is provided on the inner wall of the base and inside the U-shaped inner concave surface of the second U-shaped groove.

[0013] Preferably, four fixing rods are equidistantly fixedly connected to the top of the collar, and top blocks are slidably connected inside the four fixing rods, and the tops and bottoms of the four top blocks are arranged as inclined surfaces, and a second spring is arranged on the inner wall of the fixing rod, and one end of the second spring is fixedly connected to the fixing rod, and the other end of the second spring is fixedly connected to the top block, and a limiting plate is fixedly connected to the outer wall of the first air intake pipe, and a first spring is sleeved on the outer wall of the first air intake pipe, and the top of the first spring is fixedly connected to the limiting plate, and the bottom of the first spring is fixedly connected to the second air intake pipe, and the elastic force of the second spring is greater than the elastic force of the first spring.

[0014] Preferably, the top and bottom of the transparent cover plate are both arranged as inclined surfaces, the outer wall of the transparent cover plate is symmetrically fixedly connected with two plug-in blocks, the outer wall of the support plate is provided with slots for matching the plug-in blocks, the inner wall of the support plate is symmetrically slidably connected with two clamping blocks, the outer walls of the two plug-in blocks are provided with clamping grooves for matching the clamping blocks, the fitting surfaces of the clamping blocks and the plug-in blocks are arranged as symmetrical inclined surfaces, two third springs are symmetrically arranged inside the support plate, one end of the two third springs are fixedly connected to the support plate, and the other ends of the two third springs are respectively fixedly connected to the two clamping blocks.

[0015] A method for using a hydrogen gas leak detection and warning device, which is applicable to the above-mentioned hydrogen gas leak detection and warning device, and the steps of the method are as follows:

[0016] S1: Place palladium asbestos in the cavity to filter hydrogen in the air, place liquid nitrogen in the aggregate cavity, move the base to the hydrogenation station, and wrap the hydrogenation station through the concave surface of the base;

[0017] S2: Start the exhaust fan to draw the gas at the hydrogen filling station along the air intake hopper into the first air intake pipe, use the hydrogen sensor to detect the incoming air, and when the hydrogen sensor detects hydrogen leakage, an alarm is sounded through the buzzer alarm;

[0018] S3: After hydrogen leakage is detected, the motor is started to control the liquid nitrogen to spray out, and the collar is controlled to move up and down to spray nitrogen at different heights of the hydrogen filling station. At the same time, the top block is used to make the filter plate vibrate intermittently to remove dust.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. A hydrogen gas leak detection and early warning device and a method of using the same described in the present invention, wherein the air near the hydrogen filling station is drawn into the first air intake duct by an exhaust fan, and is detected by a hydrogen sensor. When a hydrogen leak is detected, an alarm is sounded by a buzzer alarm, and the air discharged from the first air intake duct enters the cavity and is filtered by palladium asbestos to purify the hydrogen in the air to prevent the risk of explosion. At the same time, the palladium asbestos will turn black after absorbing hydrogen. The hydrogen filling driver needs to leave the hydrogen filling station in time when he finds that the palladium asbestos has turned black or the buzzer alarm sounds.

[0021] 2. The hydrogen gas leakage detection and early warning device and the use method thereof described in the present invention control the discharge of liquid nitrogen in the aggregate cavity after hydrogen leakage is detected. After the liquid nitrogen is discharged, it vaporizes into nitrogen and fills the surrounding air to reduce the concentration of nitrogen. The inertness of nitrogen further prevents hydrogen explosion.

[0022] 3. A hydrogen gas leak detection and early warning device and a method of using the same described in the present invention, after nitrogen enters the gas outlet slot, the hydrogen is evenly ejected from different gas outlets under the guidance of the guide plate, thereby forming an annular nitrogen encirclement around the hydrogen filling station to protect the hydrogen filling station, and the motor controls the ring to move up and down to spray nitrogen at different heights of the hydrogen filling station. When no nitrogen leakage position is detected, the entire hydrogen filling station is surrounded by nitrogen.

[0023] 4. The hydrogen gas leakage detection and early warning device and the use method thereof described in the present invention prevent external dust and other debris from being drawn into the first air intake pipe by means of a filter plate. When the control ring moves up and down, the top block cooperates to make the filter plate intermittently vibrate downward, thereby being able to shake off dust and other debris at the bottom of the filter plate, preventing dust and other debris from clogging the filter plate and affecting the detection and purification of hydrogen. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1 is a stereogram of the present invention;

[0026] Figure 2 It is a stereogram of another viewing angle of the present invention;

[0027] Figure 3 is a front cross-sectional view of the present invention;

[0028] Figure 4 is a cross-sectional view of the cavity of the present invention;

[0029] Figure 5 is a cross-sectional view of the collar of the present invention;

[0030] Figure 6 The present invention Figure 3 The enlarged view of point A in the middle;

[0031] Figure 7 The present invention Figure 3 The enlarged view of point B in the middle;

[0032] Figure 8 The present invention Figure 3 Enlarged view of point C in the middle;

[0033] Fig. 9 The present invention Figure 4 The enlarged view of point D in the middle;

[0034] In the figure: 1, base; 2, support plate; 3, top plate; 4, exhaust fan; 5, first exhaust pipe; 6, first air intake pipe; 7, second air intake pipe; 8, stop block; 9, stop groove; 10, hydrogen sensor; 11, first spring; 12, air intake bucket; 13, stop plate; 14, filter plate; 15, collection chamber; 16, first U-shaped groove; 17, second U-shaped groove; 18, connecting pipe; 19, sleeve; 20, piston rod; 21, piston plate; 22, heating wire; 23, motor; 24, first bevel gear; 25 , reciprocating screw; 26, second bevel gear; 27, third bevel gear; 28, rotating shaft; 29, crank; 30, connecting shaft; 31, slider; 32, collar; 33, air outlet groove; 34, air outlet; 35, guide plate; 36, guide plate; 37, fixing rod; 38, top block; 39, second spring; 40, second exhaust pipe; 41, cavity; 42, air outlet pipe; 43, transparent cover; 44, plug-in block; 45, slot; 46, block; 47, third spring; 48, buzzer alarm; 49, one-way valve. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0036] like Figures 1 to 9As shown, the present invention provides a technical solution, a hydrogen gas leakage detection and early warning device and a use method thereof, comprising a base 1, the top surface of the base 1 is set to be concave, the top of the base 1 is fixedly connected to a support plate 2, one side of the support plate 2 is fixedly connected to a top plate 3, the bottom of the top plate 3 is fixedly connected to a first air intake pipe 6, the outer wall of the first air intake pipe 6 is slidably connected to a second air intake pipe 7, the bottom of the second air intake pipe 7 is fixedly connected to an air intake hopper 12, the bottom of the air intake hopper 12 is fixedly connected to a filter plate 14, the outer wall of the first air intake pipe 6 is fixedly connected to a limiting block 8, the inner wall of the second air intake pipe 7 is provided with a limiting groove 9, the limiting block 8 fits the inner wall of the limiting groove 9, the bottom of the top plate 3 is fixedly connected to an exhaust fan 4, the output end of the exhaust fan 4 is connected to a first air extraction pipe 5, the first air extraction pipe 5 is communicated with the first air intake pipe 6, the inner wall of the first air intake pipe 6 is provided with a hydrogen sensor 10, and the bottom of the top plate 3 is fixedly connected to a buzzer alarm 48.

[0037] Through the above technical solution, the base 1 is moved to the hydrogen filling station, and the hydrogen filling station is wrapped with the inner concave surface of the base 1, and the exhaust fan 4 is started to exhaust air, so that the gas at the hydrogen filling station is sucked into the second air intake pipe 7 and the first air intake pipe 6 along the air intake hopper 12, and the hydrogen sensor 10 in the first air intake pipe 6 detects the incoming air, and the filter plate 14 is provided to prevent external dust and other debris from being sucked into the first air intake pipe 6, and the detected air is discharged along the first exhaust pipe 5. When the hydrogen sensor 10 detects hydrogen leakage, an alarm is sounded through the buzzer alarm 48 to warn the hydrogen filling driver.

[0038] Specifically, two cavities 41 are symmetrically opened inside the support plate 2, and the inner walls of the two cavities 41 are fixedly connected with air outlet pipes 42, which extend to the outside of the support plate 2. The outer wall of the support plate 2 is provided with a transparent cover plate 43 used in conjunction with the cavity 41, and one end of the first exhaust pipe 5 is symmetrically fixedly connected with two second exhaust pipes 40, and the two second exhaust pipes 40 extend to the inside of the two cavities 41 respectively.

[0039] Through the above technical solution, palladium asbestos is loaded into the cavity 41, and the color of the palladium asbestos is checked through the transparent cover 43. Under normal circumstances, the palladium asbestos is gray, and the palladium asbestos will turn black after absorbing hydrogen. The air drawn in by the exhaust fan 4 enters the cavity 41 along the first exhaust pipe 5 and the second exhaust pipe 40, and the hydrogen in the air reacts with the palladium asbestos in the cavity 41. The hydrogen in the air can be filtered and purified by the palladium asbestos, thereby preventing the hydrogen from leaking and contacting with sparks to cause an explosion. The hydrogen refueling driver can check the situation in the transparent cover 43 when refueling hydrogen. When the palladium asbestos is found to turn black or the buzzer alarm 48 sounds an alarm, it is necessary to leave the hydrogen refueling station in time, and the air passing through the palladium asbestos is discharged from the outlet pipe 42.

[0040] Specifically, a collecting cavity 15 is opened inside the base 1, a first U-shaped groove 16 is opened inside the base 1 and on the outer wall of the collecting cavity 15, a second U-shaped groove 17 is opened inside the base 1 and on one end of the first U-shaped groove 16, a reciprocating screw 25 is rotatably connected to the inner wall of the support plate 2, a slider 31 is connected to the outer wall of the reciprocating screw 25 through a screw nut pair, the slider 31 is slidably connected to the support plate 2, one end of the slider 31 is fixedly connected to a collar 32, an air outlet groove 33 is opened on the inner wall of the collar 32, the air outlet groove 33 is arranged in a ring shape, a plurality of air outlets 34 are equidistantly opened on the outer wall of the collar 32, the air outlets 34 are communicated with the air outlet groove 33, a connecting pipe 18 is fixedly connected to the bottom of the collar 32, one end of the connecting pipe 18 extends to the inside of the second U-shaped groove 17, and an air outlet assembly is arranged on the top of the base 1.

[0041] Through the above technical scheme, the reciprocating screw 25 is controlled to rotate through the gas outlet component, so that the slider 31 moves back and forth up and down, driving the ring 32 to move back and forth up and down, and the ring 32 is moved to the top of the hydrogen filling station before hydrogenation. Liquid nitrogen is loaded into the collecting chamber 15. When the hydrogen sensor 10 detects hydrogen leakage, the reciprocating screw 25 is continuously controlled to rotate through the gas outlet component, so that the slider 31 moves back and forth up and down, driving the ring 32 to move back and forth up and down. At the same time, the liquid nitrogen in the collecting chamber 15 is controlled by the gas outlet component to be discharged along the first U-shaped groove 16 and the second U-shaped groove 17, and enters the gas outlet groove 33 along the connecting pipe 18, and is discharged through a plurality of gas outlets 34, thereby spraying nitrogen at different positions around the hydrogen filling station. After the liquid nitrogen is discharged, it vaporizes into nitrogen and fills the surrounding air to reduce the concentration of nitrogen, and the inertness of nitrogen further avoids hydrogen explosion.

[0042] Specifically, the air outlet assembly includes a sleeve 19, which is fixedly installed on the top of the base 1, and the bottom of the sleeve 19 is communicated with the first U-shaped groove 16. The inner wall of the sleeve 19 is slidably connected with a piston plate 21, and the top of the piston plate 21 is fixedly connected with a piston rod 20. The top of the piston rod 20 passes through the sleeve 19, and two one-way valves 49 are provided on the inner wall of the first U-shaped groove 16. The two one-way valves 49 are symmetrically installed with the sleeve 19 as the center and are both opened to the inner recess of the base 1, and the outer wall of the support plate 2 is provided with a driving unit.

[0043] Through the above technical solution, the piston rod 20 is controlled by the driving unit to reciprocate up and down. When the piston rod 20 moves upward, it drives the piston plate 21 to move upward, and cooperates with the two one-way valves 49 to draw the liquid nitrogen in the collecting chamber 15 into the sleeve 19. When the piston rod 20 moves downward, it drives the piston plate 21 to move downward, and cooperates with the two one-way valves 49 to squeeze the liquid nitrogen in the sleeve 19 along the first U-shaped groove 16 and the second U-shaped groove 17. In this way, the driving unit controls the continuous discharge of liquid nitrogen when hydrogen leakage occurs.

[0044] Specifically, the drive unit includes a motor 23, which is fixedly mounted on one side of the support plate 2, the output end of the motor 23 extends to the interior of the support plate 2 and is fixedly connected to the first bevel gear 24, the outer wall of the reciprocating screw 25 is fixedly connected to the second bevel gear 26, the first bevel gear 24 is meshingly connected to the second bevel gear 26, the other side of the support plate 2 is rotatably connected to a rotating shaft 28, one end of the rotating shaft 28 is fixedly connected to a crank 29, the outer wall of the crank 29 is rotatably connected to a connecting shaft 30, the connecting shaft 30 is rotatably connected to the piston rod 20, the other end of the rotating shaft 28 extends to the interior of the support plate 2 and is fixedly connected to a third bevel gear 27, the third bevel gear 27 is meshingly connected to the second bevel gear 26.

[0045] Through the above technical solution, the motor 23 is started to drive the first bevel gear 24 to rotate, which in turn drives the second bevel gear 26 to rotate, which in turn drives the reciprocating screw 25 to rotate, which in turn drives the third bevel gear 27 to rotate, which in turn drives the rotating shaft 28 to rotate, which in turn drives the crank 29 to rotate. When the long end of the crank 29 rotates upward, the piston rod 20 is driven to move upward under the pull of the connecting shaft 30. When the long end of the crank 29 rotates downward, the piston rod 20 is pushed downward by the connecting shaft 30.

[0046] Specifically, a plurality of guide plates 35 are fixedly connected at equal intervals inside the air outlet groove 33. The guide plates 35 are fixedly installed on one side of the air outlet 34 and are installed at an angle. Two guide plates 36 are symmetrically fixedly connected to the inner wall of the ring 32 and one side close to the air outlet 34. The guide plate 36 located above is tilted upward, and the guide plate 36 located below is tilted downward. The guide plates 36 are arranged to be arc-shaped.

[0047] Through the above technical solution, when the nitrogen enters the gas outlet groove 33, it flows along the inner arc surface of the gas outlet groove 33. When passing through the guide plate 35, under the guidance of the guide plate 35, part of the hydrogen flows along the inclined surface of the guide plate 35 into the gas outlet 34, thereby making the hydrogen uniformly ejected from different gas outlets 34. The nitrogen ejected from the gas outlet 34 is guided by the upper and lower guide plates 36, so that the nitrogen ejected from the gas outlet 34 is ejected upward and downward along the upper and lower guide plates 36.

[0048] Specifically, a heating wire 22 is disposed on the inner wall of the base 1 and inside the U-shaped inner concave surface of the second U-shaped groove 17 .

[0049] Through the above technical solution, the heating wire 22 is started to heat the liquid nitrogen flowing in the second U-shaped groove 17, so as to accelerate the vaporization of the liquid nitrogen, so that the nitrogen can be ejected quickly, and through the U-shaped second U-shaped groove 17, the heating area of ​​the heating wire 22 on the liquid nitrogen is extended, so that the vaporization effect of the liquid nitrogen is better.

[0050] Specifically, four fixing rods 37 are equidistantly fixedly connected to the top of the collar 32, and top blocks 38 are slidably connected inside the four fixing rods 37. The tops and bottoms of the four top blocks 38 are all set as inclined surfaces, and a second spring 39 is provided on the inner wall of the fixing rod 37, one end of the second spring 39 is fixedly connected to the fixing rod 37, and the other end of the second spring 39 is fixedly connected to the top block 38. The outer wall of the first air intake pipe 6 is fixedly connected to the limiting plate 13, and the outer wall of the first air intake pipe 6 is sleeved with a first spring 11, the top of the first spring 11 is fixedly connected to the limiting plate 13, and the bottom of the first spring 11 is fixedly connected to the second air intake pipe 7, and the elastic force of the second spring 39 is greater than the elastic force of the first spring 11.

[0051] By means of the above technical solution, when the collar 32 moves upward, the four fixing rods 37 are driven to move upward, so that the top block 38 moves upward. When the inclined surface at the top of the top block 38 presses against the air intake scoop 12, as the collar 32 continues to move upward, the air intake scoop 12 is pushed upward, so that the second air intake pipe 7 slides on the outer wall of the first air intake pipe 6, and the first spring 11 is pressed. When the first spring 11 is pressed to the limit, the top block 38 moves into the fixing rod 37 under the pressure of the air intake scoop 12, and the second spring 39 is pressed. After the top block 38 enters the fixing rod 37, Under the action of a spring 11, the second air intake pipe 7, the air intake hopper 12 and the filter plate 14 vibrate downward rapidly, and then the top block 38 is reset under the action of the second spring 39. When the collar 32 moves downward, the top block 38 is pushed to move into the fixed rod 37 under the squeezing of the air intake hopper 12, and thus reciprocates. When the control collar 32 moves up and down to spray nitrogen, the filter plate 14 is driven to vibrate downward intermittently, thereby shaking off dust and other debris at the bottom of the filter plate 14, preventing dust and other debris from clogging the filter plate 14 and affecting the detection and purification of hydrogen.

[0052] Specifically, the top and bottom of the transparent cover plate 43 are both set as inclined surfaces, the outer wall of the transparent cover plate 43 is symmetrically fixedly connected with two plug blocks 44, the outer wall of the support plate 2 is provided with a slot for matching the plug blocks 44, the inner wall of the support plate 2 is symmetrically slidably connected with two clamping blocks 46, the outer walls of the two plug blocks 44 are provided with a clamping groove 45 for matching the clamping block 46, the fitting surfaces of the clamping block 46 and the plug block 44 are set as symmetrical inclined surfaces, and two third springs 47 are symmetrically arranged inside the support plate 2, one end of the two third springs 47 are fixedly connected to the support plate 2, and the other ends of the two third springs 47 are respectively fixedly connected to the two clamping blocks 46.

[0053] Through the above technical solution, the palladium asbestos in the cavity 41 needs to be replaced in time after use, so as to purify and warn the hydrogen when hydrogen leakage occurs next time. When disassembling the transparent cover 43, the top and bottom inclined surfaces of the transparent cover 43 are buckled and pulled outward, and the card slot 45 is pressed against the inclined surface of the outer wall of the card block 46. Under the pressure of the card slot 45, the card block 46 is moved and the third spring 47 is pressed. After the limit of the card block 46 is lost, the transparent cover 43 can be removed to replace the palladium asbestos in the cavity 41. After the new palladium asbestos is loaded, the two plug blocks 44 are inserted into the two slots. Under the pressure of the two plug blocks 44, the card block 46 is moved again and the third spring 47 is pressed. When the card slot 45 moves to the same vertical plane as the card block 46, under the action of the third spring 47, the card block 46 enters the card slot 45 again, thereby completing the installation of the transparent cover 43.

[0054] A method for using a hydrogen gas leak detection and warning device, which is applicable to the above-mentioned hydrogen gas leak detection and warning device, and the steps of the method are as follows:

[0055] S1: Palladium asbestos is placed in the cavity 41 to filter hydrogen in the air, liquid nitrogen is placed in the collecting cavity 15, the base 1 is moved to the hydrogenation station, and the concave surface of the base 1 is used to wrap the hydrogenation station;

[0056] S2: Start the exhaust fan 4 to draw the gas at the hydrogen filling station along the air intake hopper 12 into the first air intake pipe 6, use the hydrogen sensor 10 to detect the incoming air, and when the hydrogen sensor 10 detects hydrogen leakage, an alarm is sounded through the buzzer alarm 48;

[0057] S3: After hydrogen leakage is detected, the motor 23 is started to control the liquid nitrogen to spray out, and the collar 32 is controlled to move up and down to spray nitrogen at different positions of the hydrogenation station. At the same time, the top block 38 is cooperated to make the filter plate 14 vibrate intermittently to remove dust.

[0058] When in use, the base 1 is moved to the hydrogen filling station, the concave surface of the base 1 is wrapped around the hydrogen filling station, and the exhaust fan 4 is started to exhaust air, so that the gas at the hydrogen filling station enters the second air intake pipe 7 and the first air intake pipe 6 along the air intake hopper 12, and the hydrogen sensor 10 in the first air intake pipe 6 detects the incoming air, and the filter plate 14 is provided to prevent external dust and other debris from being sucked into the first air intake pipe 6. When the hydrogen sensor 10 detects a hydrogen leak, an alarm is sounded through the buzzer alarm 48 to warn the hydrogen filling driver, palladium asbestos is loaded into the cavity 41, and the color of the palladium asbestos is checked through the transparent cover plate 43. Under normal circumstances, the palladium asbestos is gray, and the palladium asbestos will turn black after absorbing hydrogen. The air drawn in by the exhaust fan 4 is along The first exhaust pipe 5 and the second exhaust pipe 40 enter the cavity 41, and the hydrogen in the air reacts with the palladium asbestos in the cavity 41. The palladium asbestos can be used to filter and purify the hydrogen in the air, thereby preventing the hydrogen from leaking out and contacting with sparks to cause an explosion. The hydrogen refueling driver can check the situation in the transparent cover 43 when refueling hydrogen. When the palladium asbestos turns black or the buzzer alarm 48 sounds, it is necessary to leave the hydrogen refueling station in time. The air that passes through the palladium asbestos is discharged from the outlet pipe 42. When the hydrogen sensor 10 detects a hydrogen leak, the motor 23 is started to drive the first bevel gear 24 to rotate, the second bevel gear 26 to rotate, the reciprocating screw 25 to rotate, the third bevel gear 27 to rotate, the rotating shaft 28 to rotate, and the crank 29 to rotate. When the long end of the crank 29 rotates When the piston rod 29 moves upward, the piston rod 20 is driven to move upward under the pull of the connecting shaft 30. When the long end of the crank 29 rotates downward, the piston rod 20 is pushed by the connecting shaft 30 to move downward. When the piston rod 20 moves upward, the piston plate 21 is driven to move upward, and the two one-way valves 49 are cooperated to draw the liquid nitrogen in the collecting cavity 15 into the sleeve 19. When the piston rod 20 moves downward, the piston plate 21 is driven to move downward, and the two one-way valves 49 are cooperated to squeeze the liquid nitrogen in the sleeve 19 along the first U-shaped groove 16 and the second U-shaped groove 17, and enter the gas outlet groove 33 along the connecting pipe 18. When the nitrogen enters the gas outlet groove 33, it flows along the inner arc surface of the gas outlet groove 33. When it passes through the guide plate 35, under the drainage of the guide plate 35, part of the hydrogen is The liquid nitrogen flows along the inclined surface of the guide plate 35 into the gas outlet 34, so that the hydrogen is uniformly ejected from different gas outlets 34. The nitrogen ejected from the gas outlet 34 is guided by the upper and lower guide plates 36, so that the nitrogen ejected from the gas outlet 34 is ejected upward and downward along the upper and lower guide plates 36. The heating wire 22 is started to heat the liquid nitrogen flowing in the second U-shaped groove 17 to accelerate the vaporization of the liquid nitrogen so that the nitrogen can be ejected quickly. The heating area of ​​the heating wire 22 for the liquid nitrogen is extended through the U-shaped second U-shaped groove 17, so that the vaporization effect of the liquid nitrogen is better. The reciprocating screw rod 25 rotates while the slider 31 moves back and forth up and down, driving the sleeve ring 32 to move back and forth up and down. Before hydrogenation, the sleeve ring 32 is moved to the top of the hydrogenation station, and liquid nitrogen is loaded into the aggregate cavity 15.When the hydrogen sensor 10 detects hydrogen leakage, the reciprocating screw 25 is continuously controlled to rotate through the gas outlet assembly, so that the slider 31 moves up and down reciprocatingly, driving the collar 32 to move up and down reciprocatingly, and spraying nitrogen to different positions of the hydrogen filling station. After the liquid nitrogen is discharged, it vaporizes into nitrogen and fills the surrounding air to reduce the concentration of nitrogen. The inertness of nitrogen further prevents hydrogen from exploding. When the collar 32 moves upward, it drives the four fixed rods 37 to move upward, so that the top block 38 moves upward. When the inclined surface of the top block 38 presses against the air inlet hopper 12, as the collar 32 moves upward, the top block 38 moves upward. Continue to move upward, push the air intake hopper 12 upward, make the second air intake pipe 7 slide on the outer wall of the first air intake pipe 6, and compress the first spring 11. When the first spring 11 is compressed to the limit, the top block 38 moves into the fixed rod 37 under the pressure of the air intake hopper 12, compressing the second spring 39. After the top block 38 enters the fixed rod 37, under the action of the first spring 11, the second air intake pipe 7, the air intake hopper 12, and the filter plate 14 vibrate downward rapidly, and then the top block 38 is reset under the action of the second spring 39. When the collar 32 moves downward, similarly, at the air intake hopper 12 Under the pressure, the top block 38 is pushed to move into the fixed rod 37, and thus reciprocates. When the control ring 32 moves up and down to spray nitrogen, the filter plate 14 is driven to vibrate downward intermittently, thereby being able to shake off the dust and other debris at the bottom of the filter plate 14, preventing the dust and other debris from clogging the filter plate 14 and affecting the detection and purification of hydrogen. The palladium asbestos in the cavity 41 needs to be replaced in time after use, so as to purify and warn the hydrogen when a hydrogen leak occurs next time. When disassembling the transparent cover plate 43, buckle the top and bottom inclined surfaces of the transparent cover plate 43 and pull them outward, and the card slot 45 presses against the card block 4 6, the inclined surface of the outer wall is pressed by the card slot 45, so that the card block 46 moves and compresses the third spring 47. After the card block 46 loses its limit, the transparent cover 43 can be removed to replace the palladium asbestos in the cavity 41. After the new palladium asbestos is loaded, the two plug blocks 44 are inserted into the two slots. Under the pressure of the two plug blocks 44, the card block 46 moves again and compresses the third spring 47. When the card slot 45 moves to the same vertical plane as the card block 46, under the action of the third spring 47, the card block 46 enters the card slot 45 again, thereby completing the installation of the transparent cover 43.

[0059] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0060] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0061] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A hydrogen gas leak detection and warning device and a method of using the same, characterized in that: The invention comprises a base (1), wherein the top view of the base (1) is arranged to be concave, the top of the base (1) is fixedly connected to a support plate (2), one side of the support plate (2) is fixedly connected to a top plate (3), the bottom of the top plate (3) is fixedly connected to a first air intake pipe (6), the outer wall of the first air intake pipe (6) is slidably connected to a second air intake pipe (7), the bottom of the second air intake pipe (7) is fixedly connected to an air intake hopper (12), the bottom of the air intake hopper (12) is fixedly connected to a filter plate (14), the first air intake pipe (6) is fixedly connected to a filter plate (15), and the filter plate (16) is fixedly connected to the filter plate (17). ) is fixedly connected to the outer wall of the second air intake pipe (7), a limiting groove (9) is provided on the inner wall of the second air intake pipe (7), the limiting block (8) fits the inner wall of the limiting groove (9), the bottom of the top plate (3) is fixedly connected to an exhaust fan (4), the output end of the exhaust fan (4) is connected to a first air exhaust pipe (5), the first air exhaust pipe (5) is in communication with the first air intake pipe (6), a hydrogen sensor (10) is provided on the inner wall of the first air intake pipe (6), and the bottom of the top plate (3) is fixedly connected to a buzzer alarm (48).

2. A hydrogen gas leak detection and warning device and a method of using the same according to claim 1, characterized in that: Two cavities (41) are symmetrically provided inside the support plate (2), and the inner walls of the two cavities (41) are fixedly connected with air outlet pipes (42), and the air outlet pipes (42) extend to the outside of the support plate (2). The outer wall of the support plate (2) is provided with a transparent cover plate (43) used in conjunction with the cavities (41), and one end of the first air extraction pipe (5) is symmetrically fixedly connected with two second air extraction pipes (40), and the two second air extraction pipes (40) extend to the inside of the two cavities (41) respectively.

3. A hydrogen gas leak detection and warning device and a method of using the same according to claim 2, characterized in that: A material collecting cavity (15) is provided inside the base (1), a first U-shaped groove (16) is provided inside the base (1) and on the outer wall of the material collecting cavity (15), a second U-shaped groove (17) is provided inside the base (1) and on one end of the first U-shaped groove (16), a reciprocating screw rod (25) is rotatably connected to the inner wall of the support plate (2), the outer wall of the reciprocating screw rod (25) is connected to a slider (31) via a screw nut pair, the slider (31) is slidably connected to the support plate (2), and the slider (31) is slidably connected to the support plate (2). One end of the block (31) is fixedly connected to a sleeve (32), the inner wall of the sleeve (32) is provided with an air outlet groove (33), the air outlet groove (33) is arranged in a ring shape, the outer wall of the sleeve (32) is provided with a plurality of air outlets (34) at equal intervals, the air outlets (34) are communicated with the air outlet groove (33), the bottom of the sleeve (32) is fixedly connected to a connecting pipe (18), one end of the connecting pipe (18) extends to the inside of the second U-shaped groove (17), and the top of the base (1) is provided with an air outlet assembly.

4. A hydrogen gas leak detection and warning device and a method of using the same according to claim 3, characterized in that: The air outlet assembly comprises a sleeve (19), wherein the sleeve (19) is fixedly mounted on the top of the base (1), the bottom of the sleeve (19) is communicated with the first U-shaped groove (16), the inner wall of the sleeve (19) is slidably connected with a piston plate (21), the top of the piston plate (21) is fixedly connected with a piston rod (20), the top of the piston rod (20) passes through the sleeve (19), the inner wall of the first U-shaped groove (16) is provided with two one-way valves (49), the two one-way valves (49) are symmetrically mounted with the sleeve (19) as the center and are both opened to the inner recess of the base (1), and the outer wall of the support plate (2) is provided with a driving unit.

5. A hydrogen gas leak detection and warning device and a method of using the same according to claim 4, characterized in that: The drive unit comprises a motor (23), wherein the motor (23) is fixedly mounted on one side of the support plate (2), an output end of the motor (23) extends to the interior of the support plate (2) and is fixedly connected to a first bevel gear (24), an outer wall of the reciprocating screw rod (25) is fixedly connected to a second bevel gear (26), the first bevel gear (24) and the second bevel gear (26) are meshingly connected, a rotating shaft (28) is rotatably connected to the other side of the support plate (2), one end of the rotating shaft (28) is fixedly connected to a crank (29), the outer wall of the crank (29) is rotatably connected to a connecting shaft (30), the connecting shaft (30) is rotatably connected to the piston rod (20), the other end of the rotating shaft (28) extends to the interior of the support plate (2) and is fixedly connected to a third bevel gear (27), the third bevel gear (27) is meshingly connected to the second bevel gear (26).

6. A hydrogen gas leak detection and warning device and a method of using the same according to claim 5, characterized in that: A plurality of guide plates (35) are fixedly connected at equal intervals inside the air outlet groove (33); the guide plates (35) are fixedly installed on one side of the air outlet (34) and are installed in an inclined manner; two guide plates (36) are symmetrically fixedly connected to the inner wall of the collar (32) and on one side close to the air outlet (34); the guide plate (36) located at the top is inclined upward, and the guide plate (36) located at the bottom is inclined downward; and the guide plates (36) are arranged in an arc shape.

7. A hydrogen gas leak detection and warning device and a method of using the same according to claim 6, characterized in that: A heating wire (22) is arranged on the inner wall of the base (1) and in the U-shaped inner concave surface of the second U-shaped groove (17).

8. A hydrogen gas leak detection and warning device and a method of using the same according to claim 7, characterized in that: Four fixing rods (37) are equidistantly fixedly connected to the top of the collar (32), and top blocks (38) are slidably connected to the inside of the four fixing rods (37). The tops and bottoms of the four top blocks (38) are arranged as inclined surfaces. A second spring (39) is arranged on the inner wall of the fixing rod (37), and one end of the second spring (39) is fixedly connected to the fixing rod (37), and the other end of the second spring (39) is fixedly connected to the top block (38). The outer wall of the first air intake pipe (6) is fixedly connected to a limiting plate (13), and the outer wall of the first air intake pipe (6) is sleeved with a first spring (11), the top of the first spring (11) is fixedly connected to the limiting plate (13), and the bottom of the first spring (11) is fixedly connected to the second air intake pipe (7), and the elastic force of the second spring (39) is greater than the elastic force of the first spring (11).

9. A hydrogen gas leak detection and warning device and a method of using the same according to claim 8, characterized in that: The top and bottom of the transparent cover plate (43) are both arranged as inclined surfaces; the outer wall of the transparent cover plate (43) is symmetrically fixedly connected with two plug blocks (44); the outer wall of the support plate (2) is provided with a slot for matching the plug blocks (44); the inner wall of the support plate (2) is symmetrically slidably connected with two clamping blocks (46); the outer walls of the two plug blocks (44) are both provided with a clamping groove (45) for matching the clamping blocks (46); the fitting surfaces of the clamping blocks (46) and the plug blocks (44) are arranged as symmetrical inclined surfaces; two third springs (47) are symmetrically arranged inside the support plate (2); one end of the two third springs (47) is fixedly connected to the support plate (2); and the other ends of the two third springs (47) are respectively fixedly connected to the two clamping blocks (46).

10. A method for using a hydrogen gas leak detection and warning device, the method for using the hydrogen gas leak detection and warning device according to claim 9, characterized in that: The steps for using this method are as follows: S1: palladium asbestos is placed in the cavity (41) to filter hydrogen in the air, liquid nitrogen is placed in the collecting cavity (15), the base (1) is moved to the hydrogenation station, and the concave surface of the base (1) is used to wrap the hydrogenation station; S2: starting the exhaust fan (4) to draw the gas at the hydrogen filling station along the air intake hopper (12) into the first air intake pipe (6), using the hydrogen sensor (10) to detect the incoming air, and when the hydrogen sensor (10) detects hydrogen leakage, an alarm is sounded through the buzzer alarm (48); S3: After hydrogen leakage is detected, the motor (23) is started to control the liquid nitrogen to spray out, and the collar (32) is controlled to move up and down to spray nitrogen at different positions of the hydrogenation station, and at the same time, the top block (38) is cooperated to make the filter plate (14) vibrate intermittently to remove dust.

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