Emergency explosion suppression method for pressurization module of hydrogen refueling station

Abstract

The invention provides an emergency explosion suppression device and method for a pressurization module of a hydrogen refueling station, and the device comprises the pressurization module which is internally provided with a hydrogen compressor; the device is characterized in that the device further comprises a water storage tank, and water is contained in the water storage tank; and the water cooling system forms a loop outside the water tank, the water cooling system exchanges heat with the refrigerant compressor through a heat exchange module, and the water cooling system is further connected with the hydrogen compressor. And the emergency system can provide micro-droplets for the pressurization module when hydrogen leakage occurs in the pressurization module, so that the risk of explosion is reduced.

Description

Technical Field

[0001] The invention discloses an emergency explosion suppression method for a hydrogen station boosting module, and belongs to the technical field of hydrogen station construction. Background Art

[0002] The flammable and explosive nature of hydrogen requires hydrogen refueling stations to have a high level of safety protection and emergency response capabilities. As one of the core equipment in a hydrogen refueling station, the booster module is responsible for the critical steps of boosting hydrogen storage to the gas tank and adding fuel to the fuel cell terminal. It is a key component of the station's emergency protection.

[0003] The booster modules of existing hydrogen refueling stations usually use inert gas purging, forced exhaust, high-pressure water spraying, etc. for emergency disposal after hydrogen leaks, and there is still a lack of advanced and efficient emergency explosion suppression technology equipment and methods. For example, Chinese patent CN111609309A discloses a skid-mounted hydrogen refueling station, which includes a container and a gas unloading column, a hydrogen booster system, a hydrogenation system, a hydrogenation machine, a station control system, and a high-pressure hydrogen storage bottle group connected by connecting pipes inside the container. The interior of the container is divided into three parts by partitions: the hydrogen storage bottle group area, the compressor area, and the hydrogenation area. The top of the container adopts a venting top design, and all critical pressure positions are equipped with safety valves. The advantage of this solution is that in the event of internal hydrogen leakage and explosion, the venting top opens and quickly releases the hydrogen in the container to prevent overpressure from damaging the back-end devices or hydrogenation vehicles. However, this technology is a passive protection technology after hydrogen explosion, and lacks a technology that can actively protect against hydrogen explosions.

[0004] Chinese patent CN 111928116 A discloses a modular hydrogenation station and its nitrogen explosion suppression system. High-pressure nitrogen is stored in a nitrogen source and connected via a gas pipeline to a nitrogen explosion suppression ring fixedly mounted on the top of the modular hydrogenation station. While this technology offers the advantage of active explosion suppression through high-pressure nitrogen, it requires a large number of high-pressure nitrogen cylinders, posing safety risks such as high-pressure nitrogen leakage and suffocation. Routine maintenance and replacement also pose risks such as the generation of electric sparks.

[0005] Chinese patents CN214619032U and CN214860726U respectively disclose an automatic sprinkler system for a hydrogen refueling station and an explosion-proof device for a hydrogen refueling station. Both use high-pressure nozzles to spray fire water for emergency response. Their disadvantages are that, on the one hand, the high-pressure nozzles require a high-pressure nitrogen source or a booster device such as a pump, which is also prone to safety hazards such as high-pressure nitrogen leakage and personnel suffocation. On the other hand, the "Experimental Study on the Influence of Ultrafine Water Mist Atomization on Methane Explosion Process" reports that the enhancement effect of water mist on the disturbance of the explosion flow field under pressure atomization is greater than the suppression effect of water mist cooling and heat absorption on the explosion. This system may cause hazards such as overpressure increase during hydrogen leakage, so it is not suitable for active suppression and protection of deflagration or detonation phenomena that may occur after hydrogen leakage. SUMMARY

[0006] In order to solve the above technical problems, the present application aims to provide a hydrogen station booster module emergency explosion suppression device and method, which can realize active explosion suppression and emergency protection under the hydrogen leakage scenario without using high-pressure nitrogen and other inert gases, and can realize cooling circulation of the booster module under normal conditions.

[0007] To this end, according to one aspect of the present application, a hydrogen station booster module emergency explosion suppression device is provided, comprising:

[0008] a booster module, which is internally provided with a hydrogen compressor;

[0009] The device further comprises:

[0010] a water storage tank, which contains water;

[0011] a water cooling system, which forms a loop outside the water tank, and which exchanges heat with the refrigerant compressor through a heat exchange module, and which is further connected to the hydrogen compressor.

[0012] The water cooling system cools the hydrogen compressor, and exchanges heat with the hydrogen compressor to take away the heat of the hydrogen compressor, and at the same time, the water cooling system exchanges heat with the refrigerant compressor and the heat exchange module to cool down.

[0013] Under normal conditions, the water cooling system is in working condition to cool the booster module of the hydrogen station.

[0014] An emergency system, which can provide micro-liquid droplets to the booster module to reduce the risk of explosion when the booster module leaks hydrogen.

[0015] Under normal mode, the water cooling system cools the hydrogen compressor, and when in leakage, the emergency system is started, the emergency system provides micro-liquid droplets to the booster module to increase the internal water mist concentration of the booster module, and at the same time, the working condition of the hydrogen compressor is cut off, and the power of the water cooling system is increased.

[0016] The hydrogen station booster module emergency explosion suppression device of the present embodiment can provide reasonable automatic emergency disposal for the booster module under normal mode and emergency mode, and realize active explosion suppression and fire disposal under the hydrogen leakage scenario without relying on nitrogen and other high-pressure gas bottle groups.

[0017] Further improvement of the present application is that the hydrogen station booster module emergency explosion suppression device further comprises a control system, which can control the working condition of the water cooling system, the emergency system and the booster module, and can detect whether there is hydrogen leakage.

[0018] The control system can control the operating status of the water cooling system, emergency system, and boost module. When in normal working state, the control system controls the water cooling system to work normally, the emergency system to be shut down, and the boost module to work normally. The control system also detects whether there is any hydrogen leak.

[0019] When a hydrogen leak is detected, the control system changes the operating mode of the water cooling system, emergency system, and booster module, while also sounding an alarm. The water cooling system increases power, the emergency system activates, and micro-droplets are injected into the booster module to increase the concentration of water mist inside the module and suppress the explosion. Furthermore, the control system shuts down the hydrogen compressor in the booster module to prevent further leakage.

[0020] A further improvement of the present invention is that the water cooling system includes a first water inlet pipeline connected to the hydrogen compressor, a first control valve, a first booster pump and a heat exchange module are provided on the first water inlet pipeline; the heat exchange module is connected to the refrigerant compressor;

[0021] The hydrogen compressor is also connected to the water storage tank through a first water return pipeline.

[0022] The cooling system operates as follows: a first booster pump provides the power for the water flow, while a first control valve controls the flow rate and switches the entire circuit on and off. Under the action of the first booster pump, water from the water tank flows out through the first water inlet pipe. When it reaches the heat exchange module, it exchanges heat with the refrigerant compressor. The refrigerant compressor absorbs and releases heat by compressing the refrigerant, causing a phase change. This removes heat from the water in the heat exchange module, reducing the heat content of the water in the first water inlet pipe.

[0023] After the heat and temperature of the water in the first pipeline are reduced, it enters the boosting module and exchanges heat with the hydrogen compressor to cool the hydrogen compressor. The water then flows back to the water tank through the first return pipe.

[0024] A further improvement of the present invention is that the emergency system includes a second water inlet pipeline connecting the water storage tank and the boosting module.

[0025] A second control valve and a second booster pump are provided on the second water inlet pipeline.

[0026] A further improvement of the present invention is that the emergency system further comprises a micro-droplet generating array, the outlet section of the second water inlet pipe is connected to a plurality of micro-droplet releasing ports, and the micro-droplet releasing ports are fixedly arranged inside the boosting module.

[0027] The emergency system further comprises a micro-droplet generating array for generating micro-droplets. The outlet section of the second water inlet pipe is connected to a plurality of micro-droplet releasing ports, and the micro-droplet releasing ports are fixedly arranged inside the boosting module.

[0028] The micro-droplet generating array converts the water in the water storage tank into micro-droplets, and the second booster pump drives the micro-droplets to flow in the second water inlet pipeline until they flow to the micro-droplet release port. The micro-droplets enter the booster module through the micro-droplet release port.

[0029] As more and more micro-droplets appear in the booster module, the humidity and water mist concentration inside it increase, thereby preventing the leaked hydrogen from exploding.

[0030] A further improvement of the present invention is that the micro-droplet generating array comprises an array support plate, and one or more micro-droplet generators are arranged on the array support plate.

[0031] A further improvement of the present invention is that the particle size of the micro-droplets excited by the micro-droplet generator is less than or equal to 50 μm.

[0032] A further improvement of the present invention is that the control system includes a control block for controlling the working mode of the water cooling system, the emergency system and the hydrogen compressor, and a plurality of sensors arranged on the water cooling system, the emergency system and the boost module.

[0033] The control block controls the operation of the water cooling system. In a normal state, the water cooling system is in a conventional working mode. When a leak occurs, the power of the water cooling system is increased.

[0034] In a normal state, the emergency system is in a non-operating state. When a leak occurs, the control block controls the emergency system to operate.

[0035] In normal state, the hydrogen compressor in the boosting module is in normal working state. When leakage occurs, the hydrogen compressor is shut down.

[0036] A further improvement of the present invention is that the sensor includes a first temperature sensor arranged in the first water inlet pipe, a second temperature sensor arranged in the boosting module, a humidity sensor and a flame detector arranged in the boosting module.

[0037] A further improvement of the present invention is that the control module is also connected to a hydrogen leakage alarm, which can generate an alarm when hydrogen leakage occurs.

[0038] A further improvement of the present invention is that the bottom of the water tank is connected to an external water source via a third water inlet pipe and a third control valve, and the control module is electrically connected to the third control valve.

[0039] A further improvement of the present invention is that a liquid level meter is provided inside the water tank, and the liquid level meter is connected to the control module via wireless signals.

[0040] According to another aspect of the present invention, a method for emergency explosion suppression of a hydrogen station booster module is also proposed, wherein the hydrogen station booster module emergency explosion suppression device is provided on the booster module.

[0041] A further improvement of the present invention is that

[0042] In normal state, the water cooling system is in normal working state to cool the hydrogen compressor; the emergency system is in closed state;

[0043] When a leak occurs, the water cooling system power is increased and the emergency system is in working condition. When a hydrogen leak occurs in the boosting module, micro droplets can be provided to the boosting module, and the hydrogen compressor is cooled and shut down.

[0044] A further improvement of the present invention is that after the emergency system is activated, micro-droplets are provided to the boosting module so that the water mist concentration inside the boosting module is greater than or equal to 250 mg / L.

[0045] A further improvement of the present invention is that a liquid level gauge is provided in the water tank. When the liquid level gauge data drops to a set threshold value 1, the control module starts the third control valve to open, and adjusts the opening of the third control valve according to the liquid level gauge data. When the liquid level gauge data rises to a set threshold value 2, the control module starts the third control valve to close.

[0046] Compared with the prior art, the advantages of this application are:

[0047] According to the present invention, an emergency explosion suppression and method for a hydrogen refueling station booster module solves the problem that the existing technology is unable to cope with the active explosion suppression and emergency protection after a hydrogen leakage occurs in the hydrogen refueling station booster module. There is no need to use inert gases such as high-pressure nitrogen, and the cooling cycle of the booster module under normal operating conditions, as well as active explosion suppression and emergency protection in hydrogen leakage scenarios, can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The present invention will be described below with reference to the accompanying drawings.

[0049] Figure 1 The schematic diagram of the structure of the emergency explosion suppression of the boosting module of the hydrogen refueling station according to one embodiment of the present invention is shown schematically.

[0050] Figure 2 The schematic diagram of the structure of the micro-droplet generating array according to one embodiment of the present invention is shown schematically, showing a first arrangement.

[0051] Figure 3 The schematic diagram of the structure of the micro-droplet generating array according to one embodiment of the present invention is shown schematically, showing the second arrangement mode.

[0052] In this application, all drawings are schematic drawings, which are only used to illustrate the principles of the present invention and are not drawn to scale.

[0053] The meanings of the reference numerals in the accompanying drawings are as follows:

[0054] 1. Water storage tank, 2. Refrigerant compressor, 3. Control system, 4. Sensor, 5. Booster module, 11. First water inlet pipe, 12. First control valve, 13. First booster pump, 14. Heat exchange module, 15. First temperature sensor, 16. Hydrogen compressor, 17. Second temperature sensor, 18. First return water pipeline, 20. Micro-droplet generation array, 21. Second water inlet pipe, 22. Second booster pump, 23. Second control valve, 24. Micro-droplet release port. DETAILED DESCRIPTION

[0055] The present invention is described below with reference to the accompanying drawings. It should be noted that these descriptions are only provided for illustrating the principles of the present invention and are not intended to limit the scope of the present invention.

[0056] For ease of understanding, in this application, it should be noted that the directional terms or qualifiers "upper", "lower", etc. used in this application are all directed to the attached drawings to which they are referred. Figure 1 The above description is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the devices or elements must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0057] The flammable and explosive nature of hydrogen requires hydrogen refueling stations to have a high level of safety protection and emergency response capabilities. As one of the core equipment in a hydrogen refueling station, the booster module is responsible for the critical steps of boosting hydrogen storage to the gas tank and adding fuel to the fuel cell terminal. It is a key component of the station's emergency protection.

[0058] The booster modules of existing hydrogen refueling stations usually use inert gas purging, forced exhaust, high-pressure water spraying, etc. to carry out emergency disposal after hydrogen leakage, and still lack advanced and efficient emergency explosion suppression technology equipment and methods.

[0059] This embodiment provides an emergency explosion suppression device for a hydrogen station booster module that can solve the above-mentioned problem.

[0060] Figure 1 The schematic diagram shows an emergency explosion suppression device for a hydrogen station booster module, which includes:

[0061] The boosting module 5 is internally provided with a hydrogen compressor 16 .

[0062] As one of the core equipment of the hydrogen refueling station, the booster module 5 is responsible for important links such as pressurizing and storing hydrogen in the gas tank and increasing the filling to the fuel cell terminal. It is a key part of the emergency protection of the hydrogen refueling station.

[0063] The emergency explosion suppression device of this embodiment further includes:

[0064] A water storage tank 1, wherein water is contained in the water storage tank 1;

[0065] A water cooling system forms a loop outside the water tank, and the water cooling system exchanges heat with the refrigerant compressor 2 through the heat exchange module 14 . The water cooling system is also connected to the hydrogen compressor 16 .

[0066] The water cooling system cools down the hydrogen compressor 16. The water cooling system exchanges heat with the hydrogen compressor 16 to take away the heat of the hydrogen compressor 16. At the same time, the water cooling system exchanges heat through the refrigerant compressor 2 and the heat exchange module 14 to cool down the hydrogen compressor 16.

[0067] Under normal circumstances, the water cooling system is in operation to cool down the booster module 5 of the hydrogen refueling station.

[0068] An emergency system is provided, which can provide micro-droplets to the boosting module 5 when hydrogen leak occurs in the boosting module 5, so as to reduce the risk of explosion.

[0069] In the emergency explosion suppression device of the hydrogen refueling station boosting module according to this embodiment, in normal mode, the water cooling system cools down the hydrogen compressor 16. When there is a leak, the emergency system is started. The emergency system provides micro-droplets to the boosting module 5 to increase the internal water mist concentration of the boosting module 5. At the same time, the working state of the hydrogen compressor 16 is cut off, and the power of the water cooling system is increased.

[0070] The hydrogen station booster module emergency explosion suppression device described in this embodiment can enable the booster module 5 to perform reasonable automated emergency response in normal mode and emergency mode respectively, and realize active explosion suppression and fire fighting in hydrogen leakage scenarios without relying on high-pressure gas cylinder groups such as nitrogen.

[0071] In one embodiment, the hydrogen station boost module emergency explosion suppression device further includes a control system 3, which can control the working states of the water cooling system, the emergency system and the boost module 5, and can detect whether there is a hydrogen leak.

[0072] The hydrogen refueling station booster module emergency explosion suppression device according to this embodiment also includes a control system 3. The control system 3 can control the operating states of the water cooling system, the emergency system, and the booster module 5. When in normal working state, the control system 3 controls the water cooling system to operate normally, the emergency system to be in a closed state, and the booster module 5 to operate normally. The control system 3 detects whether there is a hydrogen leak.

[0073] When a hydrogen leak is detected, control system 3 changes the operating mode of the water cooling system, emergency system, and boost module 5, while also sounding an alarm. The water cooling system increases power, the emergency system activates, and micro-droplets are fed into the boost module 5 to increase the concentration of water mist inside the module and suppress the explosion. Furthermore, control system 3 shuts down hydrogen compressor 16 in the boost module 5 to prevent further leakage.

[0074] In one embodiment, the water cooling system includes a first water inlet pipe connected to the hydrogen compressor 16, on which a first control valve 12, a first boost pump 13 and a heat exchange module 14 are provided; the heat exchange module 14 is connected to the refrigerant compressor 2 and can enable the water in the first water inlet pipe 11 to exchange heat with the refrigerant compressor 2.

[0075] The hydrogen compressor 16 is also connected to the water storage tank 1 through a first water return pipe 18 .

[0076] The cooling system operates as follows: First booster pump 13 provides the power for the water flow, while first control valve 12 controls the flow rate and switches the entire circuit on and off. Under the action of first booster pump 13, water from water tank 1 flows out through the first water inlet pipeline. When it reaches heat exchange module 14, it exchanges heat with refrigerant compressor 2. Refrigerant compressor 2 absorbs and releases heat by compressing the refrigerant, causing a phase change. This removes heat from the water in heat exchange module 14, reducing the heat content of the water in the first water inlet pipeline.

[0077] After the heat and temperature of the water in the first pipeline are reduced, it enters the boosting module 5 and exchanges heat with the hydrogen compressor 16 to cool the hydrogen compressor 16. Then the water flows back to the water storage tank 1 through the first return pipe.

[0078] In one embodiment, the emergency system includes a micro-droplet generating array 20, a second water inlet pipe connecting the water tank 1 and the boosting module 5, a second control valve 23 and a second boosting pump 22 are provided on the second water inlet pipe, and the second boosting pump 22 provides power for the water flow in the second water inlet pipe, so that the water in the water tank 1 is introduced into the boosting module 5 through the second water inlet pipe.

[0079] The second control valve 23 can control the switch, flow rate and flow velocity of the second water inlet pipeline.

[0080] The emergency system further includes a micro-droplet generating array 20 for generating micro-droplets. The outlet section of the second water inlet pipe 21 is connected to a plurality of micro-droplet releasing ports 24 , and the micro-droplet releasing ports 24 are fixedly disposed inside the boosting module 5 .

[0081] The micro-droplet generating array generates micro-droplets from the water in the water storage tank 1, and the second booster pump 22 drives the micro-droplets to flow in the second water inlet pipeline until they flow to the micro-droplet release port 24. The micro-droplets enter the booster module 5 through the micro-droplet release port 24.

[0082] The number of micro-droplets in the boosting module 5 increases, and the humidity and water mist concentration inside the boosting module 5 increase, thereby preventing the leaked hydrogen from exploding.

[0083] In one embodiment, the micro-droplet generating array 20 includes an array support plate, on which one or more micro-droplet generators are disposed.

[0084] The arrangement of the droplet generator can be as follows Figure 2 The horizontal and vertical arrangement shown in the figure can also be as follows Figure 3 The oblique arrangement shown.

[0085] The particle size of the micro-droplets excited by the micro-droplet generator is less than or equal to 50 μm. Furthermore, the particle size of the micro-droplets is less than or equal to 30 μm.

[0086] In one embodiment, the control system 3 includes a control block for controlling the working mode of the water cooling system, the emergency system and the hydrogen compressor 16 , and a plurality of sensors 4 provided on the water cooling system, the emergency system and the boost module 5 .

[0087] The control block controls the operation of the water cooling system. In a normal state, the water cooling system is in a conventional working mode. When a leak occurs, the power of the water cooling system is increased.

[0088] In a normal state, the emergency system is in a non-operating state. When a leak occurs, the control block controls the emergency system to operate.

[0089] In a normal state, the hydrogen compressor 16 in the boosting module 5 is in a normal working state. When a leak occurs, the hydrogen compressor 16 is shut down.

[0090] Sensor 4 is used to detect temperature, humidity, flow, working status, etc.

[0091] In a preferred embodiment, the sensor 4 includes a first temperature sensor 15 arranged in the first water inlet pipe, a second temperature sensor 17 arranged in the boost module 5, a humidity sensor 4 and a flame detector arranged in the boost module 5, and a hydrogen detector may also be provided.

[0092] Preferably, the control module is also connected to a hydrogen leakage alarm, which can sound an alarm when hydrogen leakage occurs.

[0093] In one embodiment, the control system 3 includes a control module, a hydrogen leak alarm, a humidity sensor 4, a flame detector, etc. The hydrogen leak alarm and the humidity sensor 4 are respectively arranged at the top center position of the boosting module 5, and the flame detector is arranged at the top diagonal vertex position of the boosting module 5. The control module is connected to the hydrogen leak alarm, the humidity sensor 4, and the flame detector by wireless signal connection, and is connected to the first temperature sensor 15 and the second temperature sensor 17 by wireless signal connection. The control module is electrically connected to the refrigerant compressor 2, the micro-droplet generating array 20, the first control valve 12, the first boosting pump 13, the second control valve 23 and the second boosting pump 22.

[0094] When the signal of the hydrogen leakage alarm device inside the boost module 5 exceeds the set alarm limit, the system determines that hydrogen leakage occurs inside the boost module 5.

[0095] When a leak occurs, the control module controls the hydrogen compressor 16 to close, and the control module controls the micro-droplet generating array 20, the first control valve 12, the first boosting pump 13, the second control valve 23 and the second boosting pump 22 to open. The micro-droplets generated by the micro-droplet generating array 20 enter the inside of the boosting module 5 through the second water inlet pipe, the second control valve 23, the second boosting pump 22 and the micro-droplet release port 24 at the top of the water tank 1. The control module adjusts the speed of the second boosting pump 22 according to the humidity data of the sensor 4. The water at the bottom of the water tank 1 returns to the water tank 1 after passing through the first water inlet pipe, the first boosting pump 13 for pressurization, the heat exchange module 14 for heat exchange, the hydrogen compressor 16 and the first return water pipe 18. The control module adjusts the refrigeration efficiency of the refrigerant compressor 2 to the maximum value and adjusts the speed of the first boosting pump 13 to a suitable minimum value.

[0096] In one embodiment, the bottom of the water tank 1 is connected to an external water source through a third water inlet pipe and a third control valve in sequence, the control module is electrically connected to the third control valve, and a liquid level gauge is provided inside the water tank 1, and the liquid level gauge is connected to the control module through wireless signals.

[0097] The hydrogen refueling station booster module emergency explosion suppression device described in this embodiment can cool the booster module 5 under normal operating conditions and provide active explosion suppression and emergency protection in the event of a hydrogen leak. This overcomes the shortcomings of existing nitrogen explosion suppression and high-pressure water spray explosion suppression methods, which require the use of inert gases such as high-pressure nitrogen. It also avoids the enhanced effect of water mist on the explosion flow field caused by high-pressure water spray.

[0098] According to another aspect of the present invention, a method for emergency explosion suppression of a hydrogen station booster module 5 is also proposed, wherein the hydrogen station booster module 5 is provided with the emergency explosion suppression device.

[0099] In one embodiment, the method includes:

[0100] In normal state, the water cooling system is in normal working state, cooling the hydrogen compressor 16; the emergency system is in closed state;

[0101] When leakage occurs, the water cooling system power is increased and the emergency system is in working state. When hydrogen leakage occurs in the boosting module 5, micro droplets can be provided to the boosting module 5, and the hydrogen compressor 16 is cooled and shut down.

[0102] In one embodiment, after the emergency system is activated, micro-droplets are provided to the boosting module 5 so that the water mist concentration inside the boosting module 5 is greater than or equal to 250 mg / L.

[0103] In one embodiment, a liquid level gauge is set in the water tank. When the liquid level gauge data drops to a set threshold value 1, the control module starts the third control valve to open and adjusts the opening of the third control valve according to the liquid level gauge data. When the liquid level gauge data rises to a set threshold value 2, the control module starts the third control valve to close.

[0104] In one embodiment, a hydrogen station booster module 5 emergency explosion suppression equipment is provided, which includes a water storage tank 1 , a water cooling system, a hydrogen compressor 16 , an emergency system, and a control system 3 .

[0105] The water cooling system includes a first water inlet pipeline, a first control valve 12, a first booster pump 13, a heat exchange module 14, a refrigerant compressor 2 and a first water outlet pipeline. The water storage tank 1, the first water inlet pipeline, the shell side of the heat exchange module 14, the hydrogen compressor 16 and the first water outlet pipeline are connected in sequence to form a closed loop. A first booster pump 13 and a first control valve 12 are provided at any position of the loop. The pipe side of the heat exchange module 14 is connected to the refrigerant compressor 2, and the first water inlet pipeline is connected to the bottom of the water storage tank 1.

[0106] The emergency system includes a micro-droplet generating array 20, a second water inlet pipeline, a second control valve 23, a second booster pump 22, and a micro-droplet release port 24. The second control valve 23 and the second booster pump 22 are installed at any position between the micro-droplet generating array 20 and the micro-droplet release port 24. The micro-droplet generating array 20 is composed of one or more micro-droplet generators, and the micro-droplet particle size stimulated by the micro-droplet generator is less than or equal to 50 μm. The micro-droplet release port 24 is distributed on the top and side outer walls of the booster module 5. The second water inlet pipeline is connected to the top of the water storage tank 1.

[0107] The control system 3 includes a control module and a sensor 4. The sensor 4 includes a hydrogen leak alarm, a combustible gas leak alarm, a humidity sensor 4, a flame detector, etc. The sensor 4 is arranged inside the boost module 5. The control module is connected to the sensor 4, the first temperature sensor 15 and the second temperature sensor 17 by wireless or wired signal communication. The control module is electrically connected to the refrigerant compressor 2, the micro-droplet generating array 20, the first control valve 12, the first boost pump 13, the second control valve 23 and the second boost pump 22.

[0108] A method for emergency explosion suppression of a hydrogen station boosting module 5, characterized in that it includes a normal mode and an emergency mode: the normal mode is applicable to the normal working process of the hydrogen compressor 16, at this time the control module controls the first control valve 12 and the first boosting pump 13 to open, the second control valve 23 and the second control valve 23 to close, and the water at the bottom of the water tank 1 returns to the water tank 1 after passing through the first water inlet pipeline, the first boosting pump 13 for pressurization, the heat exchange module 14 for heat exchange, the hydrogen compressor 16, and the first return water pipeline 18. The control module adjusts the flow rate of the first boosting pump 13 and the refrigeration efficiency of the refrigerant compressor 2 according to the temperature changes of the first temperature sensor 15 and the second temperature sensor 17.

[0109] The emergency mode is applicable to the process of hydrogen leakage in the hydrogen compressor 16 inside the boosting module 5. When the hydrogen concentration, flame signal, etc. detected by the sensor 4 exceed the set threshold, the control module controls the micro-droplet generating array 20, the first control valve 12, the first boosting pump 13, the second control valve 23 and the second control valve 23 to open. The micro-droplet generator generates micro-droplets with a diameter of less than or equal to 50 μm, which enter the boosting module through the second water inlet pipe at the top of the water storage tank 1, the second control valve 23, the second boosting pump 22 and the micro-droplet release port 24. 5, the control module adjusts the flow rate of the second booster pump 22 based on the humidity data from the sensor 4, so that the water mist concentration inside the booster module 5 is greater than or equal to 250 mg / L. The water at the bottom of the water storage tank 1 returns to the water storage tank 1 after passing through the first water inlet pipe, the first booster pump 13 for boosting, the heat exchange module 14 for heat exchange, the hydrogen compressor 16, and the first return water pipe 18. The control module adjusts the cooling efficiency of the refrigerant compressor 2 to the maximum, and adjusts the flow rate of the first booster pump 13 to an appropriate minimum value based on the temperature changes of the first temperature sensor 15 and the second temperature sensor 17.

[0110] The bottom of the water storage tank 1 is connected to an external water source via a third water inlet pipe and a third control valve in sequence, and the control module is electrically connected to the third control valve.

[0111] A liquid level meter is provided inside the water tank 1 , and the liquid level meter is connected to the control module via wireless or wired signal communication.

[0112] When the liquid level gauge data drops to the set threshold 1, the control module starts the third control valve to open and adjusts the opening of the third control valve according to the liquid level gauge data. When the liquid level gauge data rises to the set threshold 2, the control module starts the third control valve to close.

[0113] Example 1

[0114] like Figure 1 As shown, a hydrogen station booster module 5 emergency explosion suppression equipment of this embodiment includes a water storage tank 1, a water cooling system, a hydrogen compressor 16, an emergency system and a control system 3.

[0115] The water cooling system includes a first water inlet pipeline, a first control valve 12, a first booster pump 13, a heat exchange module 14, a refrigerant compressor 2 and a first water outlet pipeline. The water tank 1, the first water inlet pipeline, the shell side of the heat exchange module 14, the hydrogen compressor 16 and the first water outlet pipeline are connected in sequence to form a closed loop. The pipe side of the heat exchange module 14 is connected to the refrigerant compressor 2, and the first water inlet pipeline is connected to the bottom of the water tank 1; in order to control the switch and flow of the water cooling system, a first booster pump 13 and a first control valve 12 are provided at any position of the loop.

[0116] The emergency system includes a micro-droplet generating array 20, a second water inlet pipeline, a second control valve 23, a second booster pump 22 and a micro-droplet release port 24. A second control valve 23 and a second booster pump 22 are provided at any position between the micro-droplet generating array 20 and the micro-droplet release port 24, and the second water inlet pipeline is connected to the top of the water tank 1.

[0117] The micro-droplet generating array 20 is composed of 15 micro-droplet generators, which are arranged as follows: Figure 2 As shown, the particle size SMD of the excited micro-droplets is 25 μm, and there are 6 micro-droplet release ports 24, 2 of which are evenly distributed on the top central axis of the boosting module 5, and 4 are respectively located at the center position of the outer wall of each side.

[0118] The control system 3 includes a control module, a hydrogen leakage alarm, a humidity sensor 4, a flame detector, etc. The hydrogen leakage alarm and the humidity sensor 4 are respectively arranged at the top center position of the boost module 5, and the flame detector is arranged at the top diagonal vertex position of the boost module 5.

[0119] The control module is connected to the hydrogen leak alarm, the humidity sensor 4, and the flame detector by wireless means, and is connected to the first temperature sensor 15 and the second temperature sensor 17 by wireless means. The control module is electrically connected to the refrigerant compressor 2, the micro-droplet generating array 20, the first control valve 12, the first booster pump 13, the second control valve 23, and the second booster pump 22;

[0120] During the hydrogen unloading process, the hydrogen compressor 16 works normally. At this time, the control module controls the first control valve 12 and the first boost pump 13 to open, and the second control valve 23 and the second boost pump 22 to close. The water at the bottom of the water tank 1 returns to the water tank 1 after passing through the first water inlet pipeline, the first boost pump 13 for pressurization, the heat exchange module 14, the hydrogen compressor 16, and the first return water pipeline 18. The control module adjusts the speed of the first boost pump 13 and the refrigeration efficiency of the refrigerant compressor 2 according to the temperature changes of the first temperature sensor 15 and the second temperature sensor 17, so that the temperature of the first temperature sensor 15 and the second temperature sensor 17 is controlled at 25℃±2℃.

[0121] Example 2

[0122] like Figure 1 As shown, a hydrogen station booster module 5 emergency explosion suppression equipment of this embodiment includes a water storage tank 1, a water cooling system, a hydrogen compressor 16, an emergency system and a control system 3.

[0123] The bottom of the water tank 1 is connected to an external water source through a third water inlet pipe and a third control valve in sequence. The control module is electrically connected to the third control valve. A liquid level gauge is provided inside the water tank 1. The liquid level gauge is connected to the control module through wireless signals.

[0124] The water cooling system includes a first water inlet pipeline, a first control valve 12, a first booster pump 13, a heat exchange module 14, a refrigerant compressor 2 and a first water outlet pipeline. The water tank 1, the first water inlet pipeline, the shell side of the heat exchange module 14, the hydrogen compressor 16 and the first water outlet pipeline are connected in sequence to form a closed loop. The pipe side of the heat exchange module 14 is connected to the refrigerant compressor 2, and the first water inlet pipeline is connected to the bottom of the water tank 1; in order to control the switch and flow of the water cooling system, a first booster pump 13 and a first control valve 12 are provided at any position of the loop.

[0125] The emergency system includes a micro-droplet generating array 20, a second water inlet pipeline, a second control valve 23, a second booster pump 22 and a micro-droplet release port 24. A second control valve 23 and a second booster pump 22 are provided at any position between the micro-droplet generating array 20 and the micro-droplet release port 24, and the second water inlet pipeline is connected to the top of the water tank 1.

[0126] The micro-droplet generating array 20 is composed of 13 micro-droplet generators, which are arranged as follows: Figure 3 As shown, the particle size SMD of the micro-droplets excited by the micro-droplet generator is 25 μm, and there are 7 micro-droplet release ports 24, 3 of which are evenly distributed on the top central axis of the boosting module 5, and 4 are respectively located at the center position of the outer wall of each side.

[0127] The control system 3 includes a control module, a hydrogen leakage alarm, a humidity sensor 4, a flame detector, etc. The hydrogen leakage alarm and the humidity sensor 4 are respectively arranged at the top center position of the boost module 5, and the flame detector is arranged at the top diagonal vertex position of the boost module 5.

[0128] The control module is connected to the hydrogen leak alarm, the humidity sensor 4, and the flame detector by wireless means, and is connected to the first temperature sensor 15 and the second temperature sensor 17 by wireless means. The control module is electrically connected to the refrigerant compressor 2, the micro-droplet generating array 20, the first control valve 12, the first booster pump 13, the second control valve 23, and the second booster pump 22;

[0129] When the signal of the hydrogen leakage alarm inside the boosting module 5 exceeds the set alarm limit, the system determines that hydrogen leakage occurs inside the boosting module 5, the control module controls the hydrogen compressor 16 to turn off, and the control module controls the micro-droplet generating array 20, the first control valve 12, the first boosting pump 13, the second control valve 23 and the second boosting pump 22 to turn on. The micro-droplets generated by the micro-droplet generating array 20 enter the interior of the boosting module 5 through the second water inlet pipe at the top of the water tank 1, the second control valve 23, the second boosting pump 22 and the micro-droplet release port 24.

[0130] The control module adjusts the speed of the second boost pump 22 according to the humidity data of the sensor 4, so that the water mist concentration inside the boost module 5 is 270 mg / L. The water at the bottom of the water tank 1 returns to the water tank 1 after passing through the first water inlet pipe, the first boost pump 13 for boosting, the heat exchange module 14 for heat exchange, the hydrogen compressor 16, and the first return water pipe 18. The control module adjusts the refrigeration efficiency of the refrigerant compressor 2 to the maximum value and adjusts the speed of the first boost pump 13 to a suitable minimum value. At this time, the temperature of the first temperature sensor 15 and the second temperature sensor 17 is maintained within the range of 25℃±2℃; when the liquid level gauge data drops to the set threshold 1, the control module starts the third control valve to open and adjusts the opening of the third control valve according to the liquid level gauge data. When the liquid level gauge data rises to the set threshold 2, the control module starts the third control valve to close.

[0131] Example 3

[0132] like Figure 1 As shown, a hydrogen station booster module 5 emergency explosion suppression equipment of this embodiment includes a water storage tank 1, a water cooling system, a hydrogen compressor 16, an emergency system and a control system 3.

[0133] The bottom of the water tank 1 is connected to an external water source via a third water inlet pipe and a third control valve in sequence. The control module is electrically connected to the third control valve. A liquid level gauge is provided inside the water tank 1. The liquid level gauge is connected to the control module via wireless signals.

[0134] The water cooling system includes a first water inlet pipeline, a first control valve 12, a first booster pump 13, a heat exchange module 14, a refrigerant compressor 2 and a first water outlet pipeline. The water tank 1, the first water inlet pipeline, the shell side of the heat exchange module 14, the hydrogen compressor 16 and the first water outlet pipeline are connected in sequence to form a closed loop. The pipe side of the heat exchange module 14 is connected to the refrigerant compressor 2, and the first water inlet pipeline is connected to the bottom of the water tank 1; in order to control the switch and flow of the water cooling system, a first booster pump 13 and a first control valve 12 are provided at any position of the loop.

[0135] The emergency system includes a micro-droplet generating array 20, a second water inlet pipe, a second control valve 23, a second booster pump 22 and a micro-droplet release port 24. A second control valve 23 and a second booster pump 22 are provided at any position between the micro-droplet generating array 20 and the micro-droplet release port 24. The second water inlet pipe is connected to the top of the water storage tank 1. The micro-droplet generating array 20 is composed of 13 micro-droplet generators, which are arranged as follows: Figure 3 As shown, the micro-droplet particle size SMD excited by the micro-droplet generator is 25 μm, and there are 7 micro-droplet release ports 24, 3 of which are evenly distributed on the top central axis of the booster module 5, and 4 are respectively located at the center position of the outer wall of each side;

[0136] The control system 3 includes a control module, a hydrogen leak alarm, a humidity sensor 4, a flame detector, etc. The hydrogen leak alarm and the humidity sensor 4 are respectively arranged at the center position of the top of the boosting module 5, and the flame detector is arranged at the top diagonal vertex position of the boosting module 5. The control module is connected to the hydrogen leak alarm, the humidity sensor 4, and the flame detector by wireless means, and is connected to the first temperature sensor 15 and the second temperature sensor 17 by wireless means. The control module is electrically connected to the refrigerant compressor 2, the micro-droplet generating array 20, the first control valve 12, the first boosting pump 13, the second control valve 23 and the second boosting pump 22;

[0137] When the flame detector inside the boost module 5 identifies the presence of flame inside the boost module 5, the control module controls the hydrogen compressor 16 to shut down, controls the micro-droplet generating array 20, the first control valve 12, the first boost pump 13, the second control valve 23, the second boost pump 22 and the third control valve to open, and adjusts the opening of the first control valve 12, the second control valve 23 and the third control valve to the maximum value, and adjusts the speed of the first boost pump 13 and the second boost pump 22 to the maximum value.

[0138] It should be understood that the embodiments disclosed herein are not limited to the specific structures, processing steps, or materials disclosed herein, but should extend to equivalent substitutions of these features understood by those skilled in the relevant art. It should also be understood that the terminology used herein is for the purpose of describing specific embodiments only and is not intended to be limiting.

[0139] In the description of the present invention, unless otherwise specified, "plurality" means two or more; terms such as "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0140] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0141] Certain terms are used throughout this specification to refer to specific system components. As those skilled in the art will appreciate, different names can often be used to refer to the same component, and thus this specification does not intend to distinguish between components that differ only in name, not function. References in this specification to "one embodiment" or "an embodiment" mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment" or "an embodiment" appearing in various places throughout this specification do not necessarily refer to the same embodiment.

[0142] The embodiments of the present invention are presented for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various embodiments with various modifications as suited for specific applications.

[0143] Although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they become aware of the basic inventive concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and / or modifications that fall within the scope of the present invention, and changes and / or modifications made in accordance with the embodiments of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. An emergency explosion suppression device for a hydrogen station booster module, comprising: A boosting module (5) having a hydrogen compressor (16) disposed therein; It is characterized by further comprising: A water storage tank (1), wherein water is contained in the water storage tank (1); A water cooling system forms a loop outside the water tank, and the water cooling system exchanges heat with the refrigerant compressor (2) through a heat exchange module (14). The water cooling system is also connected to a hydrogen compressor (16). An emergency system is provided, which can provide micro-droplets to the boosting module (5) when hydrogen leak occurs in the boosting module (5) to reduce the risk of explosion.

2. The hydrogen station booster module emergency explosion suppression device according to claim 1, characterized in that: The hydrogen station boost module emergency explosion suppression device further comprises a control system (3), wherein the control system (3) is capable of controlling the working states of the water cooling system, the emergency system and the boost module (5), and is capable of detecting whether there is a hydrogen leak.

3. The hydrogen station booster module emergency explosion suppression device according to claim 2, characterized in that: The water cooling system comprises a first water inlet pipeline connected to the hydrogen compressor (16), a first control valve (12), a first booster pump (13) and a heat exchange module (14) being provided on the first water inlet pipeline; the heat exchange module (14) being connected to the refrigerant compressor (2); The hydrogen compressor (16) is also connected to the water storage tank (1) via a first water return pipeline (18).

4. The hydrogen station booster module emergency explosion suppression device according to claim 3, characterized in that: The emergency system comprises a second water inlet pipeline connecting the water storage tank (1) and the boosting module (5), A second control valve (23) and a second boosting pump (22) are provided on the second water inlet pipeline.

5. The hydrogen station booster module emergency explosion suppression device according to claim 4, characterized in that: The emergency system further comprises a micro-droplet generating array (20), the outlet section of the second water inlet pipe (21) is connected to a plurality of micro-droplet releasing ports (24), and the micro-droplet releasing ports (24) are fixedly arranged inside the boosting module (5).

6. The hydrogen station booster module emergency explosion suppression device according to claim 5, characterized in that: The micro-droplet generating array (20) comprises an array support plate, on which one or more micro-droplet generators are arranged.

7. The hydrogen station booster module emergency explosion suppression device according to claim 6, characterized in that: The particle size of the microdroplets excited by the microdroplet generator is less than or equal to 50 μm.

8. The hydrogen station booster module emergency explosion suppression device according to any one of claims 2 to 7, characterized in that: The control system (3) includes a control block for controlling the working mode of the water cooling system, the emergency system and the hydrogen compressor (16), and a plurality of sensors (4) arranged on the water cooling system, the emergency system and the boost module (5).

9. The hydrogen station booster module emergency explosion suppression device according to claim 8, characterized in that: The sensor (4) comprises a first temperature sensor (15) arranged in the first water inlet pipe, a second temperature sensor (17) arranged in the boosting module (5), a humidity sensor (4) and a flame detector arranged in the boosting module (5).

10. The hydrogen station booster module emergency explosion suppression device according to claim 9, characterized in that: The control module is also connected to a hydrogen leakage alarm, which can sound an alarm when hydrogen leakage occurs.

11. The hydrogen station booster module emergency explosion suppression device according to claim 10, characterized in that: The bottom of the water storage tank (1) is connected to an external water source via a third water inlet pipeline and a third control valve, and the control module is electrically connected to the third control valve.

12. The hydrogen station booster module emergency explosion suppression device according to claim 12, characterized in that: A liquid level meter is provided inside the water storage tank (1), and the liquid level meter is connected to the control module via wireless signals.

13. A method for emergency explosion suppression of a hydrogen station booster module, characterized in that: A hydrogen station booster module emergency explosion suppression device according to any one of claims 1 to 12 is provided on the booster module (5).

14. The method for emergency explosion suppression of a hydrogen station booster module according to claim 13, characterized in that: In normal state, the water cooling system is in a regular working state to cool down the hydrogen compressor (16); the emergency system is in a closed state; When a leak occurs, the water cooling system power is increased, the emergency system is in working state, and when hydrogen leaks from the boosting module (5), micro droplets can be provided to the boosting module (5), while the hydrogen compressor (16) is cooled and shut down.

15. The method for emergency explosion suppression of a hydrogen station booster module according to claim 14, characterized in that: After the emergency system is activated, micro-droplets are provided to the boosting module (5), so that the water mist concentration inside the boosting module (5) is greater than or equal to 250 mg / L.

16. The method for emergency explosion suppression of a hydrogen station booster module according to claim 15, characterized in that: A liquid level gauge is set in the water tank. When the liquid level gauge data drops to the set threshold value 1, the control module starts the third control valve to open and adjusts the opening of the third control valve according to the liquid level gauge data. When the liquid level gauge data rises to the set threshold value 2, the control module starts the third control valve to close.

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