Safe hydrogenation device based on fully immersed mobile vehicle-mounted hydrogen storage device and use method

Abstract

The present invention discloses a safe hydrogenation device based on a fully immersed mobile vehicle-mounted hydrogen storage device, which relates to the fields of clean energy application and transportation. It includes a water-tight container, a hydrogen storage tank, a first hydrogen transmission pipe, a first water-tight casing, a second hydrogen transmission pipe, a second water-tight casing, and a water-tight hydrogenation gun installed on the second water-tight casing; the first hydrogen transmission pipe is connected to the second hydrogen transmission pipe; the first water-tight casing is connected to the second water-tight casing. The present invention places the hydrogenation hydrogenation pipe underwater or in water without interruption throughout the entire process, and provides safety protection devices and functions such as a hydrogenation gun locking device and a leakage collection gas storage room, thereby completely isolating the air and harmful static electricity and open flames, and achieving complete water isolation protection during the hydrogenation process. The present invention also relates to a method for using this safe hydrogenation device based on a fully immersed mobile vehicle-mounted hydrogen storage device.

Description

Technical Field

[0001] The present invention relates to the field of clean energy application and transportation, and more specifically, it is a safe hydrogenation device based on a fully immersed mobile vehicle-mounted hydrogen storage device. The present invention also relates to a method for using the safe hydrogenation device based on the fully immersed mobile vehicle-mounted hydrogen storage device. Background Art

[0002] At present, most hydrogen fuel cell vehicles use 35Mpa or 70Mpa hydrogen storage tanks, two or more (heavy-duty trucks or large buses) are connected in parallel and connected to the hydrogen inlet of the fuel cell device through a pipeline; the above-mentioned on-board hydrogen storage tanks are high-pressure containers, and hydrogen refueling stations usually also use 35Mpa and 70Mpa multi-level pressure hydrogenation; a long static discharge process is required before and after hydrogenation, and if a leak occurs during the hydrogenation process, it can only be quickly discharged into the atmosphere; therefore, hydrogenation stations, on-board hydrogen storage tanks have very high requirements for anti-static and open flames, and hydrogenation processes, which makes hydrogenation safety measures more complicated and time-consuming (hydrogenation only takes 3 minutes, but the whole process can exceed 30 minutes); the specific limitations are as follows:

[0003] 1) For on-board hydrogen storage systems, the main dangerous feature is leakage causing high-pressure explosion. In terms of the pressure of hydrogen storage tanks, the pressure is generally greater than 35MPa, and they are equipped with overpressure relief devices, collision sensors, over-current and over-temperature protection, etc., in order to fully ensure the safety of hydrogen storage tanks.

[0004] 2) Before a vehicle refuels, such as when it enters a hydrogen refueling station, the vehicle body will inevitably carry a large amount of static electricity, especially non-metallic parts such as tires, which are difficult and time-consuming to remove static electricity.

[0005] 3) Vehicles and hydrogen refueling facilities are required to be in well-ventilated areas, and may even require a roofless or butterfly-shaped roof design to ensure that hydrogen can quickly diffuse into the atmosphere and avoid accumulation of hydrogen that could lead to combustion and explosion.

[0006] 4) In addition, to ensure safety in the event of hydrogen leakage, the conductor casing of the fuel cell vehicle needs to be reliably connected to the ground to prevent static electricity from igniting hydrogen.

[0007] The above characteristics place high demands on the storage of hydrogen fuel cell vehicles and the layout of equipment in hydrogen refueling stations.

[0008] Therefore, it is necessary to develop a safe hydrogenation device based on a fully immersed mobile vehicle-mounted hydrogen storage device that has high safety in terms of explosion protection, leak detection, and static electricity isolation, and greatly simplifies the corresponding equipment and facilities. Summary of the invention

[0009] The first purpose of the present invention is to overcome the shortcomings of the above-mentioned background technology and provide a safe hydrogenation device based on a fully immersed mobile vehicle-mounted hydrogen storage device.

[0010] The second purpose of the present invention is to provide a method for using the safe hydrogenation device based on the fully immersed mobile vehicle-mounted hydrogen storage device.

[0011] In order to achieve the above-mentioned first purpose, the technical solution of the present invention is: a safe hydrogenation device based on a fully immersed mobile vehicle-mounted hydrogen storage device, characterized in that it includes a water-tight container located in the vehicle, a hydrogen storage tank located in the water-tight container, a first hydrogen delivery pipe located in the vehicle and connected to the hydrogen storage tank, a first water-tight sleeve sleeved on the first hydrogen delivery pipe and connected to the water-tight container, a second hydrogen delivery pipe located outside the vehicle, a second water-tight sleeve sleeved on the second hydrogen delivery pipe, and a water-tight hydrogenation gun installed on the second water-tight sleeve;

[0012] The first hydrogen delivery pipe is detachably connected to the second hydrogen delivery pipe;

[0013] The first water-tight sleeve is detachably connected to the second water-tight sleeve;

[0014] The first hydrogen transmission pipe and the first water-sealed sleeve are detachably connected to the second hydrogen transmission pipe and the second water-sealed sleeve via a double flange coupler; the double flange coupler comprises an inner flange coupler located on the first hydrogen transmission pipe and the second hydrogen transmission pipe, and an outer flange coupler located on the first water-sealed sleeve and the second water-sealed sleeve;

[0015] The water-sealed hydrogenation gun comprises a leakage collection gas storage chamber and a hydrogenation gun locking device located on a second hydrogen delivery pipe in the water-sealed hydrogenation gun.

[0016] In the above technical solution, there is an observation window on the leakage collection and gas storage room.

[0017] In the above technical solution, a hydrogen sensor is provided in the leakage collection and gas storage room.

[0018] In order to achieve the above second purpose, the technical solution of the present invention is: a method for using a safe hydrogenation device based on a fully immersed mobile vehicle-mounted hydrogen storage device, characterized in that it includes the following steps:

[0019] Step 1: First, the first hydrogen delivery pipe and the second hydrogen delivery pipe are connected through the inner flange coupler, that is, the hydrogenation circuit is connected; then the first water-sealed casing and the second water-sealed casing are connected through the outer flange coupler, that is, the water circuit is connected;

[0020] Step 2: First, water is injected into the water-sealed container through the second water-sealed sleeve and the first water-sealed sleeve. When the hydrogenation circuit is in a fully immersed state, hydrogen is added to the hydrogen storage tank through a water-sealed hydrogenation gun;

[0021] Step 3: After the filling is completed, close the hydrogenation circuit of the water-sealed hydrogenation gun, close and separate the inner flange coupler, close the outer flange coupler, reverse the double flange couplers from inside to outside, and withdraw the water-sealed hydrogenation gun from the vehicle hydrogenation port to complete the entire hydrogenation process without the need for static discharge treatment;

[0022] Step 4: During the hydrogenation process, when a small amount of hydrogen leaks from the water-sealed hydrogenation gun, the hydrogen is collected by the leak monitoring and collection gas storage room, and the hydrogen leakage is observed through the observation window. The leaked hydrogen is captured by the hydrogen sensor, which sends out a locking signal, and the hydrogenation gun locking device is activated to close the hydrogenation circuit.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] 1) The present invention places the hydrogenation hydrogen transmission pipe underwater or in water without interruption throughout the entire process, and provides safety protection devices and functions such as a hydrogenation gun locking device and a leakage collection gas storage room, thereby completely isolating the air and harmful static electricity and open flames, and achieving complete water isolation protection during the hydrogenation process.

[0025] 2) The present invention does not require special anti-static and anti-static treatment, and is leak-proof and easy to monitor; it truly realizes hydrogenation like natural oil, and truly realizes that the entire hydrogenation process only takes 3 minutes. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention.

[0027] Figure 2 for Figure 1 Enlarged view of point A in the middle. DETAILED DESCRIPTION

[0028] The following detailed description of the implementation of the present invention is made in conjunction with the accompanying drawings, but they do not constitute a limitation of the present invention and are only given as examples. At the same time, the advantages of the present invention will become clearer and easier to understand through the description.

[0029] Referring to the attached drawings, it can be seen that: a safe hydrogenation device based on a fully immersed mobile vehicle-mounted hydrogen storage device is characterized in that: it includes a water-sealed container 1 located in the vehicle, a hydrogen storage tank 11 located in the water-sealed container 1, a first hydrogen delivery pipe 21 located in the vehicle and connected to the hydrogen storage tank 11, a first water-sealed sleeve 31 sleeved on the first hydrogen delivery pipe 21 and connected to the water-sealed container 1, a second hydrogen delivery pipe 22 located outside the vehicle, a second water-sealed sleeve 32 sleeved on the second hydrogen delivery pipe 22, and a water-sealed hydrogenation gun 4 installed on the second water-sealed sleeve 32;

[0030] The first hydrogen delivery pipe 21 is detachably connected to the second hydrogen delivery pipe 22;

[0031] The first water-tight sleeve 31 is detachably connected to the second water-tight sleeve 32 .

[0032] The first hydrogen transmission pipe 21 and the first water-sealed sleeve 31 are detachably connected to the second hydrogen transmission pipe 22 and the second water-sealed sleeve 32 through a double flange coupler 5; the double flange coupler 5 includes an inner flange coupler 51 located on the first hydrogen transmission pipe 21 and the second hydrogen transmission pipe 22, and an outer flange coupler 52 located on the first water-sealed sleeve 31 and the second water-sealed sleeve 32.

[0033] The water-sealed hydrogenation gun 4 includes a leakage collection gas storage room 41 and a hydrogenation gun locking device 42 located on the second hydrogen delivery pipe 22 in the water-sealed hydrogenation gun 4 .

[0034] The leakage collection and air storage room 41 is provided with an observation window 411 .

[0035] The leak collection and gas storage room 41 is provided with a hydrogen sensor 43 .

[0036] In actual use, the hydrogen storage tank 11 is a conventional medium- and high-pressure gas storage device used for hydrogen transportation in a long-tube trailer; it is made of metal material or new lightweight composite materials, and the relevant requirements must meet the relevant standards and specifications such as GB 4962-2008 "Technical Regulations for Safety in the Use of Hydrogen".

[0037] The water-sealed container 1 is customized according to the shape of the hydrogen storage tank 11, and can be a single hydrogen storage tank water-sealed container (such as a water tank, etc.), or a water-sealed container shared by multiple hydrogen storage tanks 11 (when arranged side by side); the outer shell of the water-sealed container 1 can be made of rust-proof metal materials such as stainless steel and pure aluminum, or can be made of materials such as organic plastics that can tolerate hydrogen well; the shell of the water-sealed container 1 has watertight / airtight conditions under normal air pressure; the water-sealed container 1 is provided with a transparent observation window (column) at a convenient position for observing gas leakage of the internal hydrogen storage tank 11.

[0038] The first water-sealed sleeve 31 and the second water-sealed sleeve 32 are customized according to the outer diameters of the first hydrogen transmission pipe 21 and the second hydrogen transmission pipe 22, and can be a single water-sealed sleeve for a single pipeline, or a water-sealed sleeve shared by multiple hydrogen transmission pipes (co-path parallel arrangement); the outer shell of the water-sealed sleeve can be made of rust-proof metal materials such as stainless steel and pure aluminum, or can be made of materials such as organic plastics that can well tolerate hydrogen; the shell of the water-sealed sleeve has watertight / airtight conditions under normal air pressure. The water-sealed sleeve is provided with a transparent observation window (column) at a convenient position to collect and observe gas leakage from the internal hydrogen transmission pipe.

[0039] The double flange coupler 5 adopts a water (outer layer) and hydrogen (inner layer) double flange coupler structure.

[0040] The water-sealed hydrogenation gun 4 is used to control and implement hydrogenation, and usually has two levels of 35Mpa and 70Mpa.

[0041] The leakage collection gas storage room 41 is used to collect a small amount of hydrogen leaked when the double flange coupler 5 is not sealed enough.

[0042] The observation window 411 is used to observe the hydrogen leakage at the corresponding flange connection of the leakage collection and storage room 41.

[0043] The hydrogenation gun locking device 42 is used to detect that when hydrogen leakage occurs in the double flange coupler 5 during the hydrogenation process, it will promptly send out a closing signal and instruction, and quickly close the hydrogenation circuit.

[0044] The hydrogen sensor 43 is used to monitor the gas signal in the gas storage room 41 so that the gas leakage can be monitored by instruments in addition to observation.

[0045] The method for using a safe hydrogenation device based on a fully immersed mobile vehicle-mounted hydrogen storage device comprises the following steps:

[0046] Step 1: First, the first hydrogen transmission pipe 21 and the second hydrogen transmission pipe 22 are connected through the inner flange coupler 51, that is, the hydrogenation circuit is connected; then the first water sealing sleeve 31 and the second water sealing sleeve 32 are connected through the outer flange coupler 52, that is, the water circuit is connected;

[0047] Step 2: First, water is injected into the water-sealed container 1 through the second water-sealed sleeve 32 and the first water-sealed sleeve 31. When the hydrogenation circuit is in a fully immersed state (a fully immersed water level scale is provided on the double flange coupler 5), hydrogen is added to the hydrogen storage tank 11 through the water-sealed hydrogenation gun 4;

[0048] Step 3: After the filling is completed, the hydrogenation circuit of the water-sealed hydrogenation gun 4 is closed, the inner flange coupler 51 is closed and separated, the outer flange coupler 52 is closed, and the double flange couplers 5 are reversed from the inside to the outside, and the water-sealed hydrogenation gun 4 is withdrawn from the vehicle hydrogenation port, completing the entire hydrogenation process without the need for static discharge treatment;

[0049] Step 4: During the hydrogenation process, when a small amount of hydrogen leaks from the water-sealed hydrogenation gun 4, the hydrogen is collected by the leak monitoring and collection gas storage room 41, and the hydrogen leakage is observed through the observation window 411 (bubbles are generated). The hydrogen sensor 43 captures the hydrogen leakage and sends a locking signal. The hydrogenation gun locking device 42 is activated to close the hydrogenation circuit.

[0050] Other parts not described belong to the prior art.

Claims

1. A safe hydrogenation device based on a fully immersed mobile vehicle-mounted hydrogen storage device, characterized in that: The invention comprises a water-tight container (1) located in a vehicle, a hydrogen storage tank (11) located in the water-tight container (1), a first hydrogen delivery pipe (21) located in the vehicle and connected to the hydrogen storage tank (11), a first water-tight sleeve (31) sleeved on the first hydrogen delivery pipe (21) and connected to the water-tight container (1), a second hydrogen delivery pipe (22) located outside the vehicle, a second water-tight sleeve (32) sleeved on the second hydrogen delivery pipe (22), and a water-tight hydrogenation gun (4) mounted on the second water-tight sleeve (32); The first hydrogen transmission pipe (21) and the second hydrogen transmission pipe (22) are detachably connected; The first water-tight sleeve (31) is detachably connected to the second water-tight sleeve (32); The first hydrogen transmission pipe (21) and the first water-sealed sleeve (31) are detachably connected to the second hydrogen transmission pipe (22) and the second water-sealed sleeve (32) via a double-flange coupler (5); the double-flange coupler (5) comprises an inner flange coupler (51) located on the first hydrogen transmission pipe (21) and the second hydrogen transmission pipe (22), and an outer flange coupler (52) located on the first water-sealed sleeve (31) and the second water-sealed sleeve (32); The water-sealed hydrogenation gun (4) comprises a leakage collection gas storage room (41) and a hydrogenation gun locking device (42) located on a second hydrogen delivery pipe (22) in the water-sealed hydrogenation gun (4).

2. The safe hydrogenation device based on the fully immersed mobile vehicle-mounted hydrogen storage device according to claim 1 is characterized in that: The leakage collection and gas storage room (41) is provided with an observation window (411).

3. The safe hydrogenation device based on the fully immersed mobile vehicle-mounted hydrogen storage device according to claim 2 is characterized in that: The leak collection and gas storage room (41) is provided with a hydrogen sensor (43).

4. The method for using the safe hydrogenation device based on the fully immersed mobile vehicle-mounted hydrogen storage device according to claim 3 is characterized in that: The following steps are involved: Step 1: First, the first hydrogen delivery pipe (21) and the second hydrogen delivery pipe (22) are connected through the inner flange coupler (51), that is, the hydrogenation circuit is connected; then, the first water-sealed casing (31) and the second water-sealed casing (32) are connected through the outer flange coupler (52), that is, the water circuit is connected; Step 2: first, water is injected into the water-sealed container 1 through the second water-sealed sleeve (32) and the first water-sealed sleeve (31), and when the hydrogenation circuit is in a fully immersed state, hydrogen is added to the hydrogen storage tank (11) through the water-sealed hydrogenation gun (4); Step 3: After the filling is completed, the hydrogenation circuit of the water-sealed hydrogenation gun (4) is closed, the inner flange coupler (51) is closed and separated, the outer flange coupler (52) is closed, the double flange coupler (5) is reversed from the inside to the outside, and the water-sealed hydrogenation gun (4) is withdrawn from the vehicle hydrogenation port, completing the entire hydrogenation process without the need for static discharge treatment; Step 4: During the hydrogenation process, when a small amount of hydrogen leaks from the water-sealed hydrogenation gun (4), the hydrogen is collected by the leak monitoring and collecting gas storage room (41), and the hydrogen leakage is observed through the observation window (411). The leaked hydrogen is captured by the hydrogen sensor (43), which sends a locking signal, and the hydrogenation gun locking device (42) is activated to close the hydrogenation circuit.

Images