A pressure relief alarm device for hydrogen storage tank and alarm method thereof

Abstract

The present invention relates to the technical field of hydrogen storage tanks, and discloses a pressure relief alarm device for hydrogen storage tanks and an alarm method thereof, comprising an alarm mechanism, wherein the alarm mechanism also comprises an equipment base. Before use, the present invention connects the power supply of an electric telescopic rod, the electric telescopic rod drives the sliding column to move downward, and the air inside the boost pipe is discharged outward through the gap between the center disk and the blocking block. After the electric telescopic rod reaches the lowest point, the electric telescopic rod loses power, and a hard spring pushes the blocking block to block the hole of the center disk. The pulling spring drives the center disk to generate an upward force through the sliding column, so that a negative pressure space is formed inside the boost pipe. When a crack appears in the valve of the storage tank, resulting in pressure relief, the high-pressure gas inside the storage tank will enter the external negative pressure space through the crack position, forcing the center disk to move upward, driving the power output end to contact the power receiving end, and connecting the power supply of the alarm, so that the equipment can quickly and accurately determine whether there is pressure relief in the equipment, and give a warning effect in time.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen storage tank equipment, and in particular to a pressure relief alarm device for a hydrogen storage tank and an alarm method thereof. Background Art

[0002] There may be multiple locations where hydrogen tanks may experience pressure relief, depending on the cause of the pressure relief and the design of the tank. Here are some common locations where hydrogen may leak: Valves: If the valve itself is damaged or poorly sealed, it may cause hydrogen leakage. Connections: There may be poor sealing, looseness or damage at the connection between the tank and the pipeline, valve or other equipment, causing hydrogen leakage. Tank wall: The outer shell of the tank may leak due to corrosion, mechanical damage or other factors. Safety valve: If the pressure inside the tank exceeds the safety limit, the safety valve may open and release hydrogen to relieve the pressure. This is usually a safety measure to prevent the tank from exploding. Welds or joints: There may be cracks or defects in the welds or joints of the tank, causing hydrogen leakage.

[0003] Among them, the welding sealing position of the valve is the main location of hydrogen leakage. However, in actual application of the storage tank, due to the peculiar shape of the valve position and the omission of hydrogen during use, it is difficult to achieve accurate detection and alarm functions by relying solely on the hydrogen concentration detection and alarm device. In view of the above problems, the following solutions are proposed. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a pressure relief alarm device for a hydrogen storage tank, comprising an alarm mechanism, the alarm mechanism also includes an equipment base, the top of the equipment base is fixedly connected to a booster pipe, and the bottom of the equipment base is fixedly connected to a mounting plate;

[0005] The detection mechanism includes a telescopic disk fixedly connected to the top of the boost pipe, a sealing rubber pad fixedly connected between the gaps of the telescopic disk, and a center disk fixedly connected to the center bottom of the telescopic disk. In view of the problem that hydrogen is a colorless, odorless and flammable gas, it is very easy to cause an explosion if it leaks. When the storage tank leaks, the center disk will withstand the bulging force of the high-pressure gas. A sealing rubber pad is installed on the top of the center disk and the gap between the sealing rubber pad. As shown in the figure, when the center disk and the telescopic disk are pushed by the internal high-pressure gas, the superimposed telescopic disks will move up and squeeze the sealing rubber pad at the gap, forcing the sealing rubber pad to deform and fill the gap between the telescopic disks, so as to avoid explosion caused by hydrogen leakage and contact with open flames, causing damage to surrounding equipment;

[0006] The sealing mechanism comprises a limiting frame fixedly connected to the bottom of the center disk, a blocking rod is slidably connected to the inner wall of the limiting frame, a blocking block is fixedly connected to the top of the blocking rod, and a hard spring is fixedly connected to the bottom of the blocking block.

[0007] Preferably, the alarm mechanism also includes a hydrogen storage tank fixedly connected to the inner wall of the mounting plate, an air outlet pipe is connected through the side wall of the hydrogen storage tank, and a fixed bracket is fixedly connected to the outer wall of the boost pipe.

[0008] Preferably, the alarm mechanism also includes an alarm fixedly connected to the outer wall of the fixed bracket, a loudspeaker fixedly connected to the outer wall of the alarm, a flashing light fixedly connected to the side wall of the alarm, and a soft silicone ring fixedly connected to the inner wall of the mounting plate. Utilizing the characteristic that high-pressure gas will generate expansion force to the surroundings during application, a soft silicone ring is arranged inside the equipment. When cracks appear in the hydrogen storage tank and the pressure is released, the gas inside the hydrogen storage tank will fill into the boosting pipe. During the filling process, the air pressure inside the boosting pipe will gradually be in a state of being equal to the air pressure inside the hydrogen storage tank. Utilizing the characteristic of high pressure to low pressure flow, the high-pressure gas inside the boosting pipe will squeeze the soft silicone ring to make the component flat. The flat soft silicone ring will fill the installation gap between the mounting plate and the hydrogen storage tank, strengthen the sealing of the equipment installation position, and avoid continuous external spraying of high-pressure gas inside the hydrogen storage tank, which will cause the stress on the gap between the outlet pipe and the hydrogen storage tank to increase, resulting in the problem of crack expansion.

[0009] Preferably, the detection mechanism also includes a fixed frame fixedly connected to the top of the alarm, the top of the fixed frame is fixedly connected to an electric telescopic rod, the end of the electric telescopic rod away from the fixed frame is fixedly connected to an L-shaped plate, the bottom of the L-shaped plate is fixedly connected to a sliding rod, the bottom of the L-shaped plate is fixedly connected to a hydraulic pipe, the inner wall of the hydraulic pipe is slidably connected to a resistance disk, and the bottom of the resistance disk is fixedly connected to an extrusion rod.

[0010] Preferably, the detection mechanism also includes a sliding column slidably connected to the inner wall of the fixed frame, the inner wall of the sliding column is slidably connected to the outer wall of the sliding rod, a pulling spring is fixedly connected to the outer wall of the sliding column, the end of the pulling spring away from the sliding rod is fixedly connected to the top of the fixed frame, the bottom of the fixed frame is fixedly connected to an electric connection end, and the top of the center plate is fixedly connected to an electric output end. Taking advantage of the fact that the interior of the hydrogen storage tank is in a high-pressure environment, a booster pipe is provided on the outside of the equipment. When the equipment is in use, the equipment is installed on the outer wall of the valve of the storage tank, and the power of the electric telescopic rod is turned on. As the electric telescopic rod drives the L-shaped plate to move downward, the L-shaped plate first drives the hydraulic pipe to move downward. Due to the smaller holes in the outer wall of the resistance plate, the resistance plate is subjected to greater resistance, forcing the resistance plate and the extrusion rod to drop synchronously. The extrusion rod contacts the blocking block, forcing The blocking block moves downward, and as the sliding column moves downward, the air inside the boost pipe is discharged outward through the gap between the center disk and the blocking block. After the electric telescopic rod reaches the lowest point, the electric telescopic rod loses power, and at this time the hard spring pushes the blocking block to block the hole in the center disk, so that the center disk forms a closed space, and the pulling spring generates a pulling force, which drives the center disk to generate an upward force through the sliding column, thereby forming a negative pressure space inside the boost pipe. When cracks appear in the valve of the storage tank, causing pressure relief, the high-pressure gas inside the storage tank will enter the external negative pressure space through the crack position, forcing the center disk to move upward, driving the power output end to contact the power receiving end, achieving rapid rebound of the equipment, and turning on the power supply of the alarm, so that the equipment can quickly and accurately determine whether there is pressure relief in the equipment, and give a timely warning effect.

[0011] Preferably, the sealing mechanism also includes a fixed square plate fixedly connected to the top of the center disk, a pulling frame is fixedly connected to the top of the fixed square plate, a pulling wire is fixedly connected to the bottom of the pulling frame, and a limiting sliding pipe is fixedly connected to the outer wall of the boost pipe.

[0012] Preferably, the sealing mechanism also includes a roller rotatably connected to the outer wall of the limiting sliding tube, the outer wall of the roller is rotatably connected to the outer wall of the pulling wire, the inner wall of the limiting sliding tube is slidably connected to a sealing sliding tube, the outer wall of the sealing sliding tube is fixedly connected to a pulling square plate, the side wall of the limiting sliding tube is fixedly connected to a pushing spring, the end of the pulling wire away from the pulling frame is fixedly connected to the outer wall of the pulling square plate, and the side wall of the sealing sliding tube is fixedly connected to a sealing ring. Utilizing the characteristic that the center disk moves upward under the influence of high pressure, a pulling frame and a pulling wire are arranged inside the equipment. When the center disk moves upward, the pulling frame drives the pulling wire to move upward, and the pulling wire drives the pulling square plate and the sealing sliding tube to move toward the inside of the equipment through the steering of the roller. During the inward movement of the sealing sliding tube, the sealing ring contacts the crack position along the inner wall of the limiting sliding tube. Through the application of the above-mentioned components, when the hydrogen storage tank is depressurized, the sealing ring coincides with the crack, and the sealing ring will slow down the speed of crack pressure relief, thereby gaining reaction time for the staff and slowing down the pressure relief speed.

[0013] A pressure relief alarm device for a hydrogen storage tank and an alarm method thereof, comprising the following steps:

[0014] S1: Before using the present invention, the power supply of the electric telescopic rod is turned on, the electric telescopic rod drives the sliding column to move downward, and the air inside the boost pipe is discharged outward through the gap between the central disk and the blocking block. After the electric telescopic rod reaches the lowest point, the electric telescopic rod loses power;

[0015] S2: The hard spring pushes the blocking block to block the hole of the center disk, so that the center disk forms a closed space, and the pulling spring generates a pulling force. The pulling spring drives the center disk to generate an upward force through the sliding column, thereby forming a negative pressure space inside the boost pipe;

[0016] S3: When cracks appear in the valve of the storage tank, causing pressure release, the high-pressure gas inside the tank will enter the external negative pressure space through the crack, forcing the center disk to move upward, driving the power output end to contact the power receiving end, and connecting the power of the alarm.

[0017] The present invention has the following beneficial effects:

[0018] (1) The present invention utilizes the fact that the interior of the hydrogen storage tank is in a high-pressure environment, and a boosting pipe is arranged outside the device. When the device is used, the device is installed on the outer wall of the valve of the storage tank, and the power of the electric telescopic rod is turned on. As the electric telescopic rod drives the L-shaped plate to move downward, the L-shaped plate first drives the hydraulic pipe to move downward. Due to the small hole in the outer wall of the resistance plate, the resistance plate is subjected to a large resistance, forcing the resistance plate and the extrusion rod to descend synchronously. The extrusion rod contacts the blocking block, forcing the blocking block to move downward, and as the sliding column moves downward, the air inside the boosting pipe is discharged outward through the gap between the center plate and the blocking block. When the electric telescopic rod reaches the lowest point, the pressure is increased. After that, the electric telescopic rod loses power, and at this time the hard spring pushes the blocking block to block the hole of the center disk, forming a closed space in the center disk, and the pulling spring generates a pulling force, which drives the center disk to generate an upward force through the sliding column, thereby forming a negative pressure space inside the booster pipe. When cracks appear in the valve of the storage tank and cause pressure relief, the high-pressure gas inside the storage tank will enter the external negative pressure space through the crack position, forcing the center disk to move upward, driving the power output end to contact the power receiving end, realizing the rapid rebound of the equipment, and connecting the power supply of the alarm, so that the equipment can quickly and accurately determine whether there is a pressure relief in the equipment, and give a timely warning effect.

[0019] (2) The present invention aims at the problem that hydrogen is a colorless, odorless and flammable gas, which is very likely to cause an explosion if it leaks. When the storage tank leaks, the center plate will bear the bulging force of the high-pressure gas, and a sealing rubber pad is installed at the top of the center plate and the gap between the sealing rubber pad. Figure 4As shown, when the central disk and the telescopic disk are pushed by the internal high-pressure gas, the superimposed telescopic disks will move upward and squeeze the sealing rubber pads at the gaps, forcing the sealing rubber pads to deform and fill the gaps between the telescopic disks, preventing hydrogen leakage from contacting open flames and causing explosions, which would cause damage to surrounding equipment.

[0020] (3) The present invention utilizes the characteristic that high-pressure gas will generate expansion force in all directions during the application process. A soft silicone ring is arranged inside the equipment. When cracks appear in the hydrogen storage tank and the pressure is released, the gas inside the hydrogen storage tank will fill into the boosting pipe. During the filling process, the air pressure inside the boosting pipe will gradually be in a state of being equal to the air pressure inside the hydrogen storage tank. Utilizing the characteristic of high pressure to low pressure flow, the high-pressure gas inside the boosting pipe will squeeze the soft silicone ring to make the component flat. The flat soft silicone ring will fill the installation gap between the mounting plate and the hydrogen storage tank, strengthen the sealing of the equipment installation position, and avoid the continuous external spraying of high-pressure gas inside the hydrogen storage tank, which will cause the stress on the gap between the outlet pipe and the hydrogen storage tank to increase, resulting in the problem of crack expansion.

[0021] (4) The present invention utilizes the characteristic that the center disk moves upward under the influence of high pressure, and a pulling frame and a pulling wire are arranged inside the equipment. When the center disk moves upward, the pulling frame drives the pulling wire to move upward, and the pulling wire drives the pulling square plate and the sealing slide tube to move toward the inside of the equipment through the steering of the roller. During the inward movement of the sealing slide tube, the sealing ring contacts the crack position along the inner wall of the limiting slide tube. Through the application of the above-mentioned components, when the hydrogen storage tank is depressurized, the sealing ring coincides with the crack, and the sealing ring will slow down the speed of crack pressure relief, thereby buying reaction time for the staff and slowing down the speed of pressure relief. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is an exploded schematic diagram of the overall structural assembly of the present invention;

[0025] Figure 3 It is a schematic diagram of the explosion of the alarm mechanism assembly of the present invention;

[0026] Figure 4 It is a cross-sectional schematic diagram of the detection mechanism of the present invention;

[0027] Figure 5 For the present invention Figure 4A magnified view of middle;

[0028] Figure 6 For the present invention Figure 4 Enlarged view of middle B;

[0029] Figure 7 It is a cross-sectional schematic diagram of the sealing mechanism of the present invention;

[0030] Figure 8 For the present invention Figure 7 Enlarged view of middle C;

[0031] Fig. 9 It is a schematic diagram of the working process of the present invention.

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0033] In the figure: 1. Alarm mechanism; 101. Equipment base; 102. Boosting pipe; 103. Mounting plate; 104. Hydrogen storage tank; 105. Exhaust pipe; 106. Fixed bracket; 107. Alarm; 108. Loudspeaker; 109. Flashing light; 110. Soft silicone ring; 2. Detection mechanism; 201. Telescopic plate; 202. Sealing rubber pad; 203. Center plate; 204. Fixed bracket; 205. Electric telescopic rod; 206. L-shaped plate; 207. Sliding rod; 208. Sliding column; 209, pulling spring; 210, power connection terminal; 211, power output terminal; 212, hydraulic pipe; 213, resistance plate; 214, extrusion rod; 3, sealing mechanism; 301, fixed square plate; 302, pulling frame; 303, pulling wire; 304, limiting sliding tube; 305, roller; 306, sealing sliding tube; 307, pulling square plate; 308, pushing spring; 309, sealing ring; 310, limiting frame; 311, blocking rod; 312, blocking block; 313, hard spring. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] For example, see Figure 1 - Figure 3 The present invention is a pressure relief alarm device for a hydrogen storage tank, comprising an alarm mechanism 1, the alarm mechanism 1 also comprising an equipment base 101, a pressurizing pipe 102 is fixedly connected to the top of the equipment base 101, and a mounting plate 103 is fixedly connected to the bottom of the equipment base 101;

[0036] The detection mechanism 2 includes a telescopic disk 201 fixedly connected to the top of the boost pipe 102, a sealing rubber pad 202 fixedly connected between the gaps of the telescopic disk 201, and a central disk 203 fixedly connected to the central bottom of the telescopic disk 201. In view of the problem that hydrogen is a colorless, odorless and flammable gas, if it leaks, it is very easy to cause an explosion. When the storage tank leaks, the central disk 203 will withstand the bulging force of the high-pressure gas. A sealing rubber pad 202 is installed at the top of the central disk 203 and the gap between the sealing rubber pad 202. Figure 4 As shown, when the central disk 203 and the telescopic disk 201 are pushed by the internal high-pressure gas, the superimposed telescopic disks 201 will move upward and squeeze the sealing rubber pads 202 at the gaps, forcing the sealing rubber pads 202 to deform and fill the gaps between the telescopic disks 201, thereby preventing hydrogen leakage from contacting with open flames and causing explosions, thereby causing damage to surrounding equipment;

[0037] The sealing mechanism 3 includes a limit frame 310 fixedly connected to the bottom of the center disk 203, a blocking rod 311 is slidably connected to the inner wall of the limit frame 310, a blocking block 312 is fixedly connected to the top of the blocking rod 311, and a hard spring 313 is fixedly connected to the bottom of the blocking block 312.

[0038] The alarm mechanism 1 also includes a hydrogen storage tank 104 fixedly connected to the inner wall of the mounting plate 103 , an air outlet pipe 105 is connected through the side wall of the hydrogen storage tank 104 , and a fixed bracket 106 is fixedly connected to the outer wall of the boost pipe 102 .

[0039] The alarm mechanism 1 also includes an alarm 107 fixedly connected to the outer wall of the fixed bracket 106, a loudspeaker 108 fixedly connected to the outer wall of the alarm 107, a flashing light 109 fixedly connected to the side wall of the alarm 107, and a soft silicone ring 110 fixedly connected to the inner wall of the mounting plate 103. The soft silicone ring 110 is arranged inside the device by utilizing the characteristic that the high-pressure gas will generate expansion force to the surroundings during the application process. When the hydrogen storage tank 104 has cracks and releases pressure, the gas inside the hydrogen storage tank 104 will fill into the boost pipe 102. During the filling process, In the process, the internal air pressure of the boost pipe 102 will gradually be in a state of being equal to the internal air pressure of the hydrogen storage tank 104. By utilizing the characteristic of high pressure flowing to low pressure, the high-pressure gas inside the boost pipe 102 will squeeze the soft silicone ring 110 to make the component flat. The flat soft silicone ring 110 will fill the installation gap between the mounting plate 103 and the hydrogen storage tank 104, strengthen the sealing of the equipment installation position, and prevent the high-pressure gas inside the hydrogen storage tank 104 from continuously spraying out, resulting in increased stress on the gap between the outlet pipe 105 and the hydrogen storage tank 104, resulting in the problem of crack expansion.

[0040] For example 2, please refer to Figure 4 - Figure 8The present invention is a pressure relief alarm device for a hydrogen storage tank. On the basis of Example 1, the detection mechanism 2 also includes a fixing frame 204 fixedly connected to the top of the alarm 107, the top of the fixing frame 204 is fixedly connected to an electric telescopic rod 205, the end of the electric telescopic rod 205 away from the fixing bracket 106 is fixedly connected to an L-shaped plate 206, the bottom of the L-shaped plate 206 is fixedly connected to a sliding rod 207, the bottom of the L-shaped plate 206 is fixedly connected to a hydraulic pipe 212, the inner wall of the hydraulic pipe 212 is slidably connected to a resistance disk 213, and the bottom of the resistance disk 213 is fixedly connected to an extrusion rod 214.

[0041] The detection mechanism 2 also includes a sliding column 208 slidably connected to the inner wall of the fixed frame 204, the inner wall of the sliding column 208 is slidably connected to the outer wall of the sliding rod 207, a pulling spring 209 is fixedly connected to the outer wall of the sliding column 208, and the end of the pulling spring 209 away from the sliding rod 207 is fixedly connected to the top of the fixed frame 204, the bottom of the fixed frame 204 is fixedly connected to the power connection terminal 210, and the top of the center disk 203 is fixedly connected to the power output terminal 211. In order to solve the problem of the environment, a booster pipe 102 is arranged outside the device. When the device is used, the device is installed on the outer wall of the valve of the storage tank, and the power of the electric telescopic rod 205 is turned on. As the electric telescopic rod 205 drives the L-shaped plate 206 to move downward, the L-shaped plate 206 first drives the hydraulic pipe 212 to move downward. The resistance plate 213 is limited by the small hole in the outer wall, and the resistance plate 213 is subjected to a large resistance, forcing the resistance plate 213 and the extrusion rod 214 to descend synchronously. The extrusion rod 214 and the blocking block 3 12 contact, forcing the blocking block 312 to move downward, and as the sliding column 208 moves downward, the air inside the boost pipe 102 is discharged outward through the gap between the center disk 203 and the blocking block 312. After the electric telescopic rod 205 reaches the lowest point, the electric telescopic rod 205 loses power, and at this time the hard spring 313 pushes the blocking block 312 to block the hole of the center disk 203, so that the center disk 203 forms a closed space, and the pulling spring 209 generates a pulling force, and the pulling spring 209 drives the center disk 203 to generate an upward force through the sliding column 208, thereby forming a negative pressure space inside the boost pipe 102. When a crack appears in the valve of the storage tank and causes pressure relief, the high-pressure gas inside the storage tank will enter the external negative pressure space through the crack position, forcing the center disk 203 to move upward, driving the power output end 211 to contact the power receiving end 210, realizing the rapid rebound of the equipment, and connecting the power supply of the alarm 107, so that the equipment can quickly and accurately determine whether there is pressure relief in the equipment, and give a warning effect in time.

[0042] The sealing mechanism 3 also includes a fixed square plate 301 fixedly connected to the top of the central disk 203 , a pulling frame 302 is fixedly connected to the top of the fixed square plate 301 , a pull wire 303 is fixedly connected to the bottom of the pulling frame 302 , and a limiting sliding pipe 304 is fixedly connected to the outer wall of the boost pipe 102 .

[0043] The sealing mechanism 3 also includes a roller 305 rotatably connected to the outer wall of the limiting slide tube 304, the outer wall of the roller 305 is rotatably connected to the outer wall of the pull wire 303, the inner wall of the limiting slide tube 304 is slidably connected to a sealing slide tube 306, a pulling square plate 307 is fixedly connected to the outer wall of the sealing slide tube 306, a pushing spring 308 is fixedly connected to the side wall of the limiting slide tube 304, the end of the pull wire 303 away from the pulling frame 302 is fixedly connected to the outer wall of the pulling square plate 307, a sealing ring 309 is fixedly connected to the side wall of the sealing slide tube 306, and the characteristic that the center disk 203 moves upward under the influence of high pressure is utilized to A pulling frame 302 and a pulling wire 303 are provided in the part. When the center disk 203 moves upward, the pulling frame 302 drives the pulling wire 303 to move upward. The pulling wire 303 drives the pulling square plate 307 and the sealing slide tube 306 to move toward the inside of the equipment through the steering of the roller 305. During the inward movement of the sealing slide tube 306, the sealing ring 309 contacts the crack position along the inner wall of the limiting slide tube 304. Through the application of the above components, when the hydrogen storage tank 104 is depressurized, the sealing ring 309 coincides with the crack, and the sealing ring 309 will slow down the speed of crack pressure relief, thereby buying reaction time for the staff and slowing down the pressure relief speed.

[0044] The manufacturing method of the manufacturing device comprises the following steps:

[0045] S1: Before using the present invention, the power supply of the electric telescopic rod 205 is turned on, and the electric telescopic rod 205 drives the sliding column 208 to move downward, and the air inside the boost pipe 102 is discharged outward through the gap between the central disk 203 and the blocking block 312. After the electric telescopic rod 205 reaches the lowest point, the electric telescopic rod 205 loses power;

[0046] S2: The hard spring 313 pushes the blocking block 312 to block the hole of the center disk 203, so that the center disk 203 forms a closed space, and the pulling spring 209 generates a pulling force, and the pulling spring 209 drives the center disk 203 to generate an upward force through the sliding column 208, so that a negative pressure space is formed inside the boost pipe 102;

[0047] S3: When cracks appear in the valve of the storage tank, causing pressure release, the high-pressure gas inside the tank will enter the external negative pressure space through the crack, forcing the center disk 203 to move upward, driving the power output terminal 211 to contact the power receiving terminal 210, and connecting the power supply of the alarm 107.

[0048] A specific application of this embodiment is as follows: the present invention utilizes the characteristic that the interior of the hydrogen storage tank is in a high-pressure environment, and a boost pipe 102 is arranged outside the device. When the device is used, the device is installed on the outer wall of the valve of the storage tank, and the power supply of the electric telescopic rod 205 is turned on. As the electric telescopic rod 205 drives the L-shaped plate 206 to move downward, the L-shaped plate 206 first drives the hydraulic pipe 212 to move downward. The resistance plate 213 is limited by the smaller holes in the outer wall, and the resistance plate 213 is subjected to greater resistance, forcing the resistance plate 213 and the extrusion rod 214 to descend synchronously. The extrusion rod 214 contacts the blocking block 312, forcing the blocking block 312 to move downward, and as the sliding column 208 moves downward, the air inside the boost pipe 102 is discharged outward through the gap between the central disk 203 and the blocking block 312. After the electric telescopic rod 205 reaches the lowest point, the electric telescopic rod 205 loses power, and at this time the hard elastic The spring 313 pushes the blocking block 312 to block the hole of the center disk 203, so that the center disk 203 forms a closed space, and the pulling spring 209 generates a pulling force. The pulling spring 209 drives the center disk 203 to generate an upward force through the sliding column 208, so that a negative pressure space is formed inside the boost pipe 102. When a crack appears in the valve of the storage tank and causes pressure relief, the high-pressure gas inside the storage tank will enter the external negative pressure space through the crack position, forcing the center disk 203 to move upward, driving the power output end 211 to contact the power receiving end 210, realizing the rapid rebound of the equipment, and turning on the power supply of the alarm 107, so that the equipment can quickly and accurately determine whether there is a pressure relief in the equipment, and give a warning effect in time. When the storage tank leaks, the center disk 203 will withstand the bulging force of the high-pressure gas. A sealing rubber pad 202 is installed on the top of the center disk 203 and at the gap between the sealing rubber pad 202. Figure 4As shown, when the central disk 203 and the telescopic disk 201 are pushed by the internal high-pressure gas, the superimposed telescopic disks 201 will move upward and squeeze the sealing rubber pad 202 at the gap, forcing the sealing rubber pad 202 to deform and fill the gap between the telescopic disks 201 to avoid hydrogen leakage and explosion in contact with open flames. During the application process, the high-pressure gas will generate expansion force to the surroundings. A soft silicone ring 110 is arranged inside the equipment. When cracks appear in the hydrogen storage tank 104 to release pressure, the gas inside the hydrogen storage tank 104 will fill the inside of the boosting pipe 102. During the filling process, the internal air pressure of the boosting pipe 102 will gradually be in a state of being equal to the internal air pressure of the hydrogen storage tank 104. Utilizing the characteristic of high pressure flowing to low pressure, the high-pressure gas inside the boosting pipe 102 will squeeze the soft silicone ring 110 to make the component flat, and the flat soft silicone ring 110 will fill the mounting plate 103 and the hydrogen storage tank 1 04's installation gap, strengthen the sealing of the equipment installation position, avoid the continuous outward spray of high-pressure gas inside the hydrogen storage tank 104, resulting in increased stress on the gap between the outlet pipe 105 and the hydrogen storage tank 104, and the problem of crack expansion. The center disk 203 is affected by the high pressure and moves upward. A pulling frame 302 and a pull wire 303 are arranged inside the equipment. When the center disk 203 moves upward, the pulling frame 302 drives the pull wire 303 to move upward. The pull wire 303 drives the pulling square plate 307 and the sealing slide pipe 306 to move inside the equipment through the steering of the roller 305. During the inward movement of the sealing slide pipe 306, the sealing ring 309 contacts the crack position along the inner wall of the limiting slide pipe 304. Through the application of the above components, when the hydrogen storage tank 104 is depressurized, the sealing ring 309 coincides with the crack, and the sealing ring 309 will slow down the speed of crack pressure relief, so as to gain reaction time for the staff and slow down the pressure relief speed.

[0049] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A pressure relief alarm device for a hydrogen storage tank, comprising an alarm mechanism (1), wherein the alarm mechanism (1) comprises an equipment base (101), a pressurizing pipe (102) is fixedly connected to the top of the equipment base (101), and a mounting plate (103) is fixedly connected to the bottom of the equipment base (101), characterized in that: Also includes: A detection mechanism (2), the detection mechanism (2) comprising a telescopic disc (201) fixedly connected to the top of the boost pipe (102), a sealing rubber pad (202) fixedly connected between gaps of the telescopic disc (201), and a central disc (203) fixedly connected to the central bottom of the telescopic disc (201); A sealing mechanism (3), the sealing mechanism (3) comprising a limiting frame (310) fixedly connected to the bottom of the central disk (203), a blocking rod (311) being slidably connected to the inner wall of the limiting frame (310), a blocking block (312) being fixedly connected to the top of the blocking rod (311), and a hard spring (313) being fixedly connected to the bottom of the blocking block (312); The alarm mechanism (1) further comprises a hydrogen storage tank (104) fixedly connected to the inner wall of the mounting plate (103); a gas outlet pipe (105) is connected through the side wall of the hydrogen storage tank (104); and a fixing bracket (106) is fixedly connected to the outer wall of the boost pipe (102); The alarm mechanism (1) further comprises an alarm (107) fixedly connected to the outer wall of the fixed bracket (106), a loudspeaker (108) fixedly connected to the outer wall of the alarm (107), a flashing light (109) fixedly connected to the side wall of the alarm (107), and a soft silicone ring (110) fixedly connected to the inner wall of the mounting plate (103); The detection mechanism (2) further comprises a fixing frame (204) fixedly connected to the top of the alarm (107); the top of the fixing frame (204) is fixedly connected to an electric telescopic rod (205); one end of the electric telescopic rod (205) away from the fixing bracket (106) is fixedly connected to an L-shaped plate (206); the bottom of the L-shaped plate (206) is fixedly connected to a sliding rod (207); the bottom of the L-shaped plate (206) is fixedly connected to a hydraulic pipe (212); a resistance plate (213) is slidably connected to the inner wall of the hydraulic pipe (212); and the bottom of the resistance plate (213) is fixedly connected to an extrusion rod (214); The detection mechanism (2) further comprises a sliding column (208) slidably connected to the inner wall of the fixing frame (204); the inner wall of the sliding column (208) is slidably connected to the outer wall of the sliding rod (207); a pulling spring (209) is fixedly connected to the outer wall of the sliding column (208); one end of the pulling spring (209) away from the sliding rod (207) is fixedly connected to the top of the fixing frame (204); the bottom of the fixing frame (204) is fixedly connected to a power connection terminal (210); and the top of the center disk (203) is fixedly connected to a power output terminal (211); The sealing mechanism (3) further comprises a fixed square plate (301) fixedly connected to the top of the central disk (203); a pulling frame (302) is fixedly connected to the top of the fixed square plate (301); a pulling wire (303) is fixedly connected to the bottom of the pulling frame (302); and a limiting sliding pipe (304) is fixedly connected to the outer wall of the boosting pipe (102); The sealing mechanism (3) further comprises a roller (305) rotatably connected to the outer wall of the limiting slide tube (304); the outer wall of the roller (305) is rotatably connected to the outer wall of the pull wire (303); the inner wall of the limiting slide tube (304) is slidably connected to a sealing slide tube (306); a pulling square plate (307) is fixedly connected to the outer wall of the sealing slide tube (306); a pushing spring (308) is fixedly connected to the side wall of the limiting slide tube (304); one end of the pull wire (303) away from the pulling frame (302) is fixedly connected to the outer wall of the pulling square plate (307); and a sealing ring (309) is fixedly connected to the side wall of the sealing slide tube (306).

2. A pressure relief alarm method for a hydrogen storage tank, characterized in that: The pressure relief alarm device for a hydrogen storage tank as claimed in claim 1 comprises the following steps: S1: Before use, the electric telescopic rod (205) is powered on, the electric telescopic rod (205) drives the sliding column (208) to move downward, and the air inside the booster pipe (102) is discharged to the outside through the gap between the central plate (203) and the blocking block (312). After the electric telescopic rod (205) reaches the lowest point, the electric telescopic rod (205) loses power; S2: The hard spring (313) pushes the blocking block (312) to block the hole of the central disk (203), so that the central disk (203) forms a closed space, and the pulling spring (209) generates a pulling force. The pulling spring (209) drives the central disk (203) to generate an upward force through the sliding column (208), so that a negative pressure space is formed inside the boost pipe (102); S3: When a crack appears in the valve of the storage tank, causing pressure release, the high-pressure gas inside the storage tank will enter the external negative pressure space through the crack, forcing the central disk (203) to move upward, driving the power output end (211) to contact the power receiving end (210), and connecting the power supply of the alarm (107).

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