Hydrogen emptying system

Abstract

The invention discloses a hydrogen emptying system to solve the technical problems that a flame arrester is large in size, high in manufacturing cost, easy to block, not easy to overhaul and the like in the prior art. The device comprises a water-sealed tank, an emptying cylinder and an automatic control system, the water-sealed tank is a vertical cylinder, the emptying cylinder and the water-sealed tank are integrally designed, the water-sealed tank comprises a tank body, a demister and a vertically arranged partition plate, the partition plate and the demister are arranged in the tank body, the demister is arranged on the upper portion of the partition plate, the interior of the tank body is divided into two independent cavities by the partition plate, and the two independent cavities are communicated with the emptying cylinder. The two cavities are respectively a water seal cavity and an emptying cavity, the emptying cylinder goes deep into the emptying cavity and is arranged in a range which is 200mm lower than the bottom edge of the demister and 200mm higher than the bottom of the water seal tank, and the automatic control system comprises a pressure monitoring system, a liquid level monitoring system, a gas phase temperature monitoring system, a liquid phase temperature monitoring system and an interlocking water replenishing system. The pressure monitoring system and the gas-phase temperature monitoring system are arranged on the side wall of a gas-phase part tank body at the upper part of the water-sealed tank, the liquid level monitoring system and the liquid-phase temperature monitoring system are arranged on the side wall of a liquid-phase part tank body at the lower part of the water-sealed tank, and the interlocking water replenishing system is arranged at a water replenishing port.

Description

Technical Field

[0001] The present invention belongs to the technical field of safe release of hydrogen storage and application scenarios, and specifically relates to a hydrogen release system. Background Art

[0002] Hydrogen energy is a secondary energy source and also an efficient clean energy carrier. Under the background of "dual carbon", various fields of hydrogen production, storage and application are developing rapidly. Application scenarios include hydrogen production plants, hydrogen storage tank areas, hydrogen refueling mother stations, hydrogen refueling stations, fuel cell vehicle test stations, etc. In the above application scenarios, the gases emitted during overpressure and purging of equipment and pipelines are often discharged on-site or discharged into the flare venting system according to the application scenario, public engineering conditions and the nature of the exhaust gas.

[0003] The exhaust gas of equipment and pipelines when overpressure occurs is hydrogen, which has high gas purity and is heavier than air. When air is mixed into the exhaust system and encounters open flames, it will cause deflagration or detonation. Therefore, it is necessary to set up facilities in the hydrogen exhaust system to prevent air from entering and have a fire-retardant effect.

[0004] The existing technology uses a small flow of inert gas to continuously inject into the venting system, which can maintain a slightly positive pressure state in the system and avoid air backflow, but long-term continuous operation requires a large amount of gas and high cost. The existing technology uses a flame arrester to effectively prevent flashback, but with the increasing scale of hydrogen application, the venting displacement increases, and the flame arrester installed on the large-diameter venting pipeline is expensive, difficult to repair, and affects normal operation. In addition, the end of the venting pipeline is directly connected to the atmosphere. After long-term use, dust and debris in the air can easily enter the venting pipeline, and the flame arrester is prone to blockage. The existing technology uses long-flow water and overflow to maintain the liquid level of the water seal tank, but long-term continuous operation requires a large amount of water, and an underground overflow pipe must be used, which is complicated to construct. During normal production, when the air is vented frequently and in small quantities, a large amount of droplets will be carried, resulting in a waste of water.

[0005] Chinese patent CN202121717984.7 discloses a hydrogenation station venting system based on a nitrogen filling process, including a hydrogenation station venting system pipeline and a hydrogen venting pipe, and also a nitrogen filling pipeline, the output end of which is connected to the hydrogenation station venting system pipeline, for outputting nitrogen to the hydrogenation station venting system pipeline. This technology uses nitrogen to purge and replace the venting pipeline and venting pipe to reduce the air content in the venting system, but the continuous supply of nitrogen consumes a lot of energy and is not economical; intermittent supply of nitrogen, and the dilution of nitrogen over time, makes it impossible to monitor the nitrogen concentration in real time to determine whether the air content has been effectively reduced.

[0006] Chinese patent CN202121861936.5 discloses a hydrogen release device for a fuel cell vehicle hydrogen refueling station, which is mainly aimed at a hydrogen release device, that is, a release device with a release pipe structure. It adopts a flame arrester fire-retardant scheme, and a horn-shaped release type is adopted at the top of the release. The release port is facing the air, and tear holes and pipe bottom drainage methods are used to discharge rainwater. However, the tear holes of this technology are prone to blockage after long-term use, and untimely drainage will cause blockage of the release system.

[0007] Chinese patent CN202220080786.2 discloses a hydrogen safe venting device, which adopts a flame arrester fire arresting scheme. The gas outlet of its hydrogen venting system is connected to the gas inlet of the hydrogen buffer tank through a hydrogen pipeline, and the gas outlet of the hydrogen buffer tank is simultaneously connected to the gas outlet of the carbon dioxide pipeline and the gas inlet of the venting pipeline; the first program-controlled valve is arranged on the gas inlet side of the hydrogen buffer tank; the second program-controlled valve is arranged on the carbon dioxide pipeline; the gas inlet of the carbon dioxide pipeline is connected to the gas outlet of the carbon dioxide cylinder; a flame arrester is arranged at the gas outlet end of the venting pipeline; the oxygen concentration detector and the hydrogen concentration detector are both arranged on the venting pipeline, and the oxygen concentration detector is used to detect the concentration of oxygen in the gas in the venting pipeline, and the hydrogen concentration detector is used to detect the concentration of hydrogen in the gas in the venting pipeline. This technology solves the problem that the existing device often has deflagration or fire accidents when hydrogen is safely vented, but after long-term use, dust and debris in the air are easy to enter the venting pipeline, and the flame arrester is easy to be blocked. Summary of the invention

[0008] The purpose of the present invention is to provide a hydrogen venting system to solve the technical problems of the prior art such as large flame arrester size, high cost, easy clogging, and difficult maintenance, and to solve the problems of the prior art such as continuous injection of nitrogen and water resulting in large nitrogen and water consumption.

[0009] The hydrogen venting system provided by the present invention has the following technical solution.

[0010] A hydrogen venting system, characterized in that: the hydrogen venting system comprises a water seal tank, a venting cylinder and an automatic control system, the water seal tank is a vertical cylindrical body, the venting cylinder and the water seal tank are of integrated design, the water seal tank comprises a tank body, a demister and a vertically arranged partition, the partition and the demister are arranged in the tank body, the partition separates the inside of the tank body into two independent chambers, namely a water seal chamber and a venting chamber, the demister is arranged on the upper part of the partition, the bottom of the venting cylinder goes deep into the venting chamber, an air venting inlet is arranged on the upper tank body in the water seal chamber, the air venting inlet is connected to the air venting inlet pipe, a water replenishment port is arranged on the lower tank body, a gas phase temperature monitoring port, a water seal chamber pressure monitoring port and a nitrogen injection port are arranged on the top of the water seal chamber, and a discharge port is arranged at the bottom of the water seal chamber Water inlet, a liquid level gauge port is provided on the wall of the water seal chamber; a vent top pipe is provided on the top of the vent cylinder, and the bottom of the vent cylinder extends deep into the vent chamber, and is arranged 200mm below the bottom edge of the demister and 200mm above the bottom of the water seal tank; a vent chamber pressure monitoring port is provided on the top of the vent chamber, and a sewage outlet is provided at the bottom of the vent chamber. The automatic control system comprises a pressure monitoring system, a liquid level monitoring system, a gas phase temperature monitoring system, a liquid phase temperature monitoring system and an interlocking water replenishment system. The pressure monitoring system and the gas phase temperature monitoring system are arranged on the side wall of the gas phase part of the water seal tank, the liquid level monitoring system and the liquid phase temperature monitoring system are arranged on the side wall of the liquid phase part of the water seal tank, and the interlocking water replenishment system is arranged at the water replenishment port.

[0011] The water seal tank is a vertical cylinder with a flat-plate head.

[0012] The vent air inlet pipe is horizontally connected to the water seal tank, and after the pipe direction is changed by a 90° elbow, a vertical pipe is used to extend downward to 100 to 300 mm below the water level of the water seal.

[0013] The pressure monitoring port and the nitrogen injection port are arranged on the flat plate-shaped head above the water seal cavity.

[0014] The partition is a vertical double-layer structure partition, and the interval between the double-layer structure partitions is consistent with the thickness of the demister.

[0015] The top of the demister is flush with the inner side of the flat plate-type head at the top of the water seal tank, and is fixed to the partition plate by bolts on all sides.

[0016] The demister is composed of a multi-layer mesh block and an external support frame, wherein the multi-layer mesh block is a multi-layer staggered and overlapping square wire mesh structure with a thickness of 150 to 300 mm. The multi-layer mesh block is fixed by an external support frame, and the external support frame is welded as a whole. The external support frame is welded to the inner wall of the tank body using supporting ribs. The effective gas passing capacity of the demister is greater than or equal to the gas passing capacity of the venting pipe.

[0017] The venting cylinder is a vertical standpipe structure, and its inner diameter is equal to the inner diameter of the venting air inlet pipe. A venting top pipe is arranged on the top of the venting cylinder, and the venting top pipe is perpendicular to the venting cylinder.

[0018] The venting top pipe is composed of an equal-diameter tee, two venting branches and two support beams. The venting branch has the same diameter as the venting cylinder. The branch section interface of the equal-diameter tee is connected to the venting cylinder, preferably by welding. The horizontal end interfaces on both sides of the equal-diameter tee are respectively connected to the venting branch, preferably by welding. The venting branch is arranged obliquely downward, preferably by welding obliquely downward, and the angle α with the horizontal direction is 8 to 18°. The venting pipe opening on the outer side of the venting branch is beveled in the horizontal direction, with the cut facing upward, and the bevel angle β is 40 to 60°. One end of the support beam is connected to the venting cylinder, preferably by welding, and the other end is connected to the venting branch, preferably by welding. The angle γ between the support beam and the vertical direction is 30 to 60°.

[0019] The lower part of the water seal tank is provided with supporting legs, and the supporting legs are preferably fixed on the concrete foundation by anchor bolts.

[0020] The hydrogen venting system described in the present invention can be used as a safe venting place for hydrogen storage and application, and is mainly used in hydrogen refueling stations and hydrogen refueling mother stations.

[0021] The advantages of the hydrogen venting system described in the present invention over the prior art are as follows: water seal fire prevention is used instead of flame arrester fire prevention, and there is no need to use continuously supplied nitrogen and water, and it is more suitable for large-scale hydrogen energy scenarios, avoiding the installation difficulties and high costs caused by the large size of the flame arrester; a water seal tank and a venting cylinder are combined to reasonably utilize the vertical space on the basis of meeting the venting height requirements; a demister is used to remove water droplets carried by the venting air, saving water; intermittent nitrogen replacement is used to avoid air mixing into the water seal tank and the venting cylinder, thereby improving safety; and an independently arranged water seal chamber, a venting chamber and an extended venting cylinder structure are used to remove dust and debris that may be mixed in from the outside through the vertical venting The empty cylinder is collected at the bottom of the venting cavity to prevent the demister from being blocked by external influences and affecting the venting; the vented air enters the venting cavity through the demister, and combined with the effect of gravity, the sewage contained can be further removed to prevent the droplets from being discharged from the venting cylinder with the gas when hydrogen is discharged, affecting the surrounding facilities; the water seal tank is separated into two chambers by a partition, which only occupies half of the space while meeting the water seal height, saving water for the water seal; a flat-plate head is used to facilitate the disassembly and maintenance of the demister; temperature control heating measures are set on the tank body to prevent water from freezing in winter; pressure monitoring instruments are set on the top of the water seal cavity and the venting cavity respectively. During inspection, nitrogen can be continuously injected into the water seal tank to determine whether the demister is blocked by the pressure difference between the two chambers.

[0022] The present invention will be further described in detail below with the accompanying drawings and specific embodiments, but the scope of the present invention is not limited thereto. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of a process of a hydrogen venting system of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure of the water seal tank and the vent cylinder of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the venting jacking pipe of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the demister of the present invention;

[0027] The reference numerals shown in the figures are:

[0028] 1-water seal tank, 2-air venting inlet pipe, 3-nitrogen replacement pipe, 4-water supply pipe, 5-venting cylinder pipe, 6-venting chamber sewage pipe, 7-water seal chamber drainage pipe, 8-water seal chamber pressure monitoring instrument, 9-gas phase temperature monitoring instrument, 10-venting chamber pressure monitoring instrument, 11-liquid level monitoring instrument, 12-water seal water supply control valve, 13-liquid phase temperature monitoring instrument, 101-water seal chamber, 102-demister, 103-partition, 104-venting chamber, 105-leg, 106-flat head, 107 - vent cylinder, 108- vent top pipe, 109- vent air inlet, 110- level gauge port, 111- level gauge port, 112- water replenishment port, 113- drain port, 114- sewage port, 115- nitrogen replacement port, 116- water seal chamber pressure monitoring port, 117- vent chamber pressure monitoring port, 118- liquid phase temperature monitoring port, 119- heating facility, 120- gas phase temperature monitoring port; 201- equal diameter tee, 202- vent branch pipe, 203- support beam, 301- external support frame, 302- multi-layer mesh block. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] like Figure 1 and Figure 2As shown, a hydrogen venting system of the present invention, the venting air enters the water seal chamber 101 below the water seal liquid level from the venting air inlet pipe 2 through the venting air inlet 109, and enters the gas phase space at the upper part of the water seal chamber 101 after passing through the water seal; then the venting air enters the venting chamber 104 after the water droplets are removed by the demister 102, and then enters the venting cylinder 107 inside the venting chamber 104, flows upward along the venting cylinder pipe 5, and finally is discharged through the venting top pipe 108. The water for the water seal enters the water seal chamber 101 from the water replenishment pipe 4 through the water replenishment port 112 at the lower part of the water seal chamber 101. When the liquid level monitoring instrument 11 monitors that the liquid level in the water seal chamber 101 reaches the designed high liquid level, the water seal replenishment control valve 12 is closed, and when the liquid level monitoring instrument 11 monitors that the liquid level in the water seal chamber 101 reaches the designed low liquid level, the water seal replenishment control valve 12 is opened. When the liquid phase temperature monitoring instrument 13 of the water seal chamber 101 monitors that the liquid phase temperature in the water seal chamber 101 is lower than 5°C, the heating facility 119 is turned on to maintain the liquid phase in the water seal chamber 101 from freezing. The gas phase temperature monitoring instrument 9 of the water seal chamber 101 is used to observe the gas phase temperature in the chamber during daily inspections. The nitrogen that replaces the hydrogen after each venting enters the gas phase space in the upper part of the water seal chamber 101 from the nitrogen replacement pipeline 3 through the nitrogen replacement port 115 on the flat-plate head 106 above the water seal chamber 101, replacing the hydrogen in the entire water seal tank 1 and the venting cylinder 107. The water seal chamber pressure monitoring instrument 8 is installed on the water seal chamber pressure monitoring port 116 at the top of the water seal chamber 101, and the venting chamber pressure monitoring instrument 10 is installed on the venting chamber pressure monitoring port 117 at the top of the venting chamber 104. When checking whether the demister 102 is blocked, nitrogen enters the water seal chamber 101 from the nitrogen displacement pipe 3 through the nitrogen displacement port 115 on the flat head 106 above the water seal chamber 101, and then enters the vent chamber 104 through the demister 102. Whether the demister is blocked is determined by observing the pressure difference between the water seal chamber pressure monitoring instrument 8 and the vent chamber pressure monitoring instrument 10. When the water seal tank 1 is under maintenance, the sewage inside the vent chamber 104 is discharged through the vent chamber sewage pipe 6 through the sewage outlet 114 at the bottom of the vent chamber 104.

[0031] The heating facility 119 arranged on the outer wall of the tank body 101 of the water seal tank 1 can be provided with a heating pipe or a heating belt according to the climatic conditions of the use site. When the extreme minimum temperature of the use site over the years is greater than 0°C, the heating belt or the heating pipe may not be provided. Normally, when the liquid phase temperature in the water seal tank 1 is lower than 5°C, the heating pipe or the heating belt is turned on to prevent the liquid phase in the tank from freezing.

[0032] like Figure 2 As shown, the foundation support of the water seal tank 1 of the present invention is in the form of legs 105, and the legs are preferably fixed to the concrete foundation by anchor bolts.

[0033] The water seal tank 1 is a flat-plate head upright cylinder, mainly including a tank body and a demister 102. The middle of the tank body is separated by a vertical partition 103 to form two independent chambers, namely a water seal chamber 101 and a vent chamber 104. The demister 102 is arranged on the upper part of the partition 103, and the water seal chamber 101 and the vent chamber 104 are connected through the demister 102. The vent cylinder 107 is a self-supporting structure, the bottom of which is connected to the top end of the water seal tank 1 and penetrates into the vent chamber 104 of the water seal tank 1.

[0034] The partition 103 is preferably a vertical double-layer structure partition, and the spacing between the double-layer structure partitions is consistent with the thickness of the demister 102.

[0035] It is preferred that the top of the demister is flush with the inner side of the flat plate head at the top of the water seal tank, and is fixed to the partition with bolts all around.

[0036] The demister 102 is composed of a multi-layer mesh block 302 and an external support frame 301, wherein the multi-layer mesh block 302 is a multi-layer staggered and overlapping square wire mesh structure with a thickness of 150 to 300 mm. The multi-layer mesh block 302 is fixed by the external support frame 301, and the external support frame 301 is welded as a whole. The external support frame 301 is welded to the inner wall of the tank body using supporting ribs. The effective gas passing capacity of the demister 102 is greater than or equal to the gas passing capacity of the venting pipe.

[0037] The venting cylinder 107 is a vertical standpipe structure, and preferably its inner diameter is equal to the inner diameter of the venting air inlet pipe 2. The top of the venting cylinder 107 is a venting top pipe 108, and the venting top pipe 108 is perpendicular to the venting cylinder 107.

[0038] like Figure 2-3 As shown, the vent tube 107 is extended into the vent cavity 104 and supported by beam welding. The bottom height of the vent tube 107 is lower than the bottom height of the demister 102. The vent top pipe 108 at the top of the vent tube 107 is composed of an equal diameter tee 201, two vent branches 202 and two support beams 203. The vent branch 202 has the same diameter as the vent tube 107. The branch section interface of the equal diameter tee 201 is welded to the vent tube 107. The horizontal end interfaces on both sides of the equal diameter tee 201 are respectively welded to the vent branch 202. One end of the support beam is welded to the vent tube 107, and the other end is welded to the vent branch 202. The vent branch 202 is welded obliquely downward, with an angle α of 8° with the horizontal direction. The outer pipe opening of the vent branch 202 is beveled along the horizontal direction, with the cut facing upward, and the bevel angle β is 60°. The angle γ between the support beam and the vertical direction is 45°.

[0039] The vent branch pipe 202 is welded obliquely downward, and the outer pipe opening of the vent branch pipe 202 is obliquely cut in the horizontal direction with the cut facing upward. On the basis of ensuring the upward diffusion of gas, rainwater is prevented from entering, and a bird-proof net is set at the opening of the vent branch pipe 202. The vent cylinder 107 and the water seal tank 1 are preferably of integrated design. A vent air inlet 109 is provided on the upper tank body of the water seal chamber 101, and the vent air inlet 109 is connected to the vent air inlet pipe 2. A water replenishment port 112 and a liquid phase temperature monitoring port 118 are provided on the lower tank body of the water seal chamber 101. The water replenishment port 112 is connected to the water replenishment pipe 4. The water replenishment pipe 4 is provided with a water seal water replenishment control valve 12. The liquid phase temperature monitoring port 118 is connected to the liquid phase temperature monitoring instrument 13. The top of the water seal chamber 101 is provided with a gas phase temperature monitoring port 120, a water seal chamber pressure monitoring port 116 and a nitrogen injection port 115. The gas phase temperature monitoring port 120 is connected to the gas phase Temperature monitoring instrument 9, water seal chamber pressure monitoring port 116 connected to water seal chamber pressure monitoring instrument 8, nitrogen injection port connected to nitrogen replacement pipeline 3, water seal chamber 101 bottom is provided with drain port 113, drain port 113 connected to water seal chamber drain pipe 7, level gauge ports 110 and 111 are provided on the tank wall of water seal chamber 101, connected to liquid level monitoring instrument 11, demister 102 is provided on the upper part of the middle partition 103 of the tank body of water seal tank 1; vent air outlet is provided at the top of vent chamber 104, vent air outlet is connected to vent cylinder 107, the bottom of vent cylinder 107 goes deep into vent chamber 104, and is 200mm lower than the bottom edge of demister 102. Vent chamber pressure monitoring port 117 is provided at the top of vent chamber 104, connected to vent chamber pressure monitoring instrument 10, sewage outlet 114 is provided at the bottom of vent chamber 104, sewage outlet 114 is connected to vent chamber sewage pipe 6. The automatic control system comprises a pressure monitoring system, a liquid level monitoring system, a gas phase temperature monitoring system, a liquid phase temperature monitoring system, an interlocking water replenishment system and a heat tracing control system. The pressure monitoring system and the gas phase temperature monitoring system are arranged on the side wall of the gas phase tank body at the upper part of the water seal cavity, the liquid level monitoring system and the liquid phase temperature monitoring system are arranged on the side wall of the liquid phase tank body at the lower part of the water seal cavity, the interlocking water replenishment system is arranged at the water replenishment port, and the heat tracing control system is arranged on the outer wall of the water seal cavity tank body.

[0040] The venting air inlet 109 of the present invention is radially installed at the upper part of the tank wall of the water seal chamber 101. After extending into the water seal chamber 101, it is bent downward by 90° using a curved pipe and extends into the water seal chamber 101 200 mm from the bottom. The liquid level gauge port 110 is radially installed at the upper part of the tank wall of the water seal chamber 101, and the installation height is the designed water seal high liquid level. The liquid level gauge port 111 is radially installed at the upper part of the tank wall of the water seal chamber 101, and the installation height is the designed water seal low liquid level. The water replenishment port 112 is radially installed at the lower part of the tank wall of the water seal chamber 101, and the installation height is 200 mm higher than the bottom of the water seal chamber 101. The water seal chamber drain port 113 is located at the bottom of the water seal chamber and installed vertically downward. The nitrogen replacement port 115 and the water seal chamber pressure monitoring port 116 are located above the flat plate-type head 106 on the side of the water seal chamber 101, and the liquid phase temperature monitoring port 118 is located below the side wall of the water seal chamber 101 and is radially installed. The vent cavity pressure monitoring port 117 is used to compare with the water seal cavity pressure monitoring port 116. The pressure difference between the pressures measured by the vent cavity pressure monitoring port 117 and the water seal cavity pressure monitoring port 116 is used to observe whether the demister is blocked. The vent cavity pressure monitoring port 11 is located above the flat plate head 106 on the side of the vent cavity 104 and is installed vertically upward. A vent cavity drain port 114 is provided at the bottom of the vent cavity 104 of the water seal tank 1 and is installed vertically downward.

[0041] like Figure 2 , Figure 4 As shown, the demister 102 is arranged above the partition 103 and vertically installed below the flat plate head 106, and supported by the partition 103. The demister 102 is composed of an external support frame 301 and a multi-layer mesh block 302.

Claims

1. A hydrogen venting system, characterized in that: The hydrogen venting system comprises a water seal tank, a venting cylinder and an automatic control system. The water seal tank is a vertical cylindrical body. The venting cylinder and the water seal tank are of integrated design. The water seal tank comprises a tank body, a demister and a vertically arranged partition. The partition and the demister are arranged in the tank body. The partition separates the inside of the tank body into two independent chambers, namely a water seal chamber and a venting chamber. The demister is arranged on the upper part of the partition. The bottom of the venting cylinder extends deep into the venting chamber. An air venting inlet is arranged on the upper tank body in the water seal chamber. The air venting inlet is connected to the air venting inlet pipe. A water replenishment port is arranged on the lower tank body. A water seal chamber pressure monitoring port and a nitrogen injection port are arranged on the top of the water seal chamber. A drain port is arranged at the bottom of the water seal chamber. A liquid A venting top pipe is arranged on the top of the vent cylinder, and the bottom of the vent cylinder extends deep into the vent cavity, and is arranged 200mm below the bottom edge of the demister and 200mm above the bottom of the water seal tank; a vent cavity pressure monitoring port is arranged on the top of the vent cavity, and a sewage outlet is arranged on the bottom of the vent cavity. The automatic control system comprises a pressure monitoring system, a liquid level monitoring system, a gas phase temperature monitoring system, a liquid phase temperature monitoring system and an interlocking water replenishment system. The pressure monitoring system and the gas phase temperature monitoring system are arranged on the side wall of the gas phase part of the water seal tank, the liquid level monitoring system and the liquid phase temperature monitoring system are arranged on the side wall of the liquid phase part of the water seal tank, and the interlocking water replenishment system is arranged at the water replenishment port.

2. A hydrogen venting system according to claim 1, characterized in that: The water seal tank is a vertical cylinder with a flat-plate head.

3. A hydrogen venting system according to claim 1, characterized in that: The vent air inlet pipe is horizontally connected to the water seal tank, and after the pipe direction is changed by a 90° elbow, a vertical pipe is used to extend downward to 100 to 300 mm below the water level of the water seal.

4. A hydrogen venting system according to claim 1, characterized in that: The partition is a vertical double-layer structure partition, and the interval between the double-layer structure partitions is consistent with the thickness of the demister.

5. A hydrogen venting system according to claim 1, characterized in that: The top of the demister is flush with the inner side of the flat plate-type head at the top of the water seal tank, and is fixed to the partition plate by bolts on all sides.

6. A hydrogen venting system according to claim 1, characterized in that: The demister is composed of a multi-layer mesh block and an external support frame, wherein the multi-layer mesh block is a multi-layer staggered and overlapping square wire mesh structure with a thickness of 150 to 300 mm. The multi-layer mesh block is fixed by an external support frame, and the external support frame is welded as a whole and welded to the inner wall of the tank body using a supporting rib plate.

7. A hydrogen venting system according to claim 1, characterized in that: The vent cylinder is a vertical riser structure, the inner diameter of which is equal to the inner diameter of the vent air inlet pipe. A vent top pipe is arranged on the top of the vent cylinder, and the vent top pipe is perpendicular to the vent cylinder.

8. A hydrogen venting system according to claim 1, characterized in that: The venting jacking pipe is composed of an equal-diameter tee, two venting branches and two support beams. The diameter of the venting branch is equal to that of the venting cylinder. The branch section interface of the equal-diameter tee is connected to the venting cylinder. The horizontal end interfaces on both sides of the equal-diameter tee are respectively connected to the venting branch pipes. The venting branch pipe is arranged obliquely downward, and the angle α with the horizontal direction is 8 to 18°. The venting pipe opening on the outer side of the venting branch pipe is beveled along the horizontal direction, with the cut facing upward, and the bevel angle β is 40 to 60°. One end of the support beam is connected to the venting cylinder, and the other end is connected to the venting branch pipe. The angle γ between the support beam and the vertical direction is 30 to 60°.

9. A hydrogen venting system according to claim 1, characterized in that: Install a bird-proof net at the outlet of the vent branch pipe.

10. A hydrogen venting system according to claim 1, characterized in that: The lower part of the water seal tank is provided with supporting legs, which are fixed on the concrete foundation by anchor bolts.

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