Hydrogen filtering device of hydrogen fuel cell system

Abstract

The utility model discloses a hydrogen filtering device of a hydrogen fuel cell system, which relates to the technical field of hydrogen filtering, and comprises a tank body, a gas inlet conduit and a gas exhaust conduit, the upper side of the tank body is connected with the gas inlet conduit and the gas exhaust conduit in a penetrating manner, one side of the tank body is connected with a liquid changing pipe, a heat dissipation coil pipe is arranged in the tank body, and the liquid changing pipe is connected with a liquid outlet pipe. And one end of the heat dissipation coil pipe is connected with the tank body in a penetrating manner. According to the hydrogen filtering device of the hydrogen fuel cell system, hydrogen can be fully contacted and reacted with a solution after being scattered by the gas uniformizing disc and the gas uniformizing frame during filtering, the filtering effect and efficiency of the hydrogen can be effectively improved by arranging the filtering frame for secondary filtering, impurities contained in the hydrogen can be effectively removed by arranging a multi-layer filtering structure, and the filtering effect is improved. The hydrogen quality is improved, so that the hydrogen filtering device of the hydrogen fuel cell system solves the problem that gas cannot be uniformly dispersed in a solution due to the fact that hydrogen is introduced into a hydrogen filtering tank by adopting a single gas inlet pipe.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen filtration technology, specifically a hydrogen filtration device for a hydrogen fuel cell system. Background Technology

[0002] A hydrogen fuel cell system is a power generation device that directly converts the chemical energy of hydrogen and oxygen into electrical energy. It has advantages such as no pollution, low noise, and high efficiency, and is widely used in automobiles, aerospace and other fields. The hydrogen filtration device in the hydrogen fuel cell system is a key part to ensure the normal operation of the fuel cell and improve its efficiency. In addition, the device can also adjust the flow rate and pressure of hydrogen according to the load demand to ensure the normal operation of the fuel cell.

[0003] According to a hydrogen filtration device with announcement number CN212881792U, a housing, an inlet pipe, and an outlet pipe are included. The housing contains a filter liquid for filtering water vapor in hydrogen. One end of the inlet pipe extends through the top of the housing to the outside of the housing, and the other end extends below the surface of the filter liquid inside the housing. The outlet pipe is located at the top of the housing and connects the inside and outside of the housing. In use, hydrogen raw material is introduced into the housing through the inlet pipe. After contacting the solution inside the housing, impurities and moisture in the hydrogen are removed, and the hydrogen escapes upward and is discharged from the outlet pipe. However, this hydrogen filtration device uses only a single inlet pipe when introducing hydrogen, which results in the gas not being evenly dispersed inside the solution and the hydrogen not being able to fully contact the filter solution, thus leading to low hydrogen filtration efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a hydrogen filtration device for a hydrogen fuel cell system, in order to solve the problem mentioned in the background art that the use of a single inlet pipe when introducing hydrogen into the hydrogen filter tank results in the gas not being evenly dispersed inside the solution.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a hydrogen filtration device for a hydrogen fuel cell system, comprising a tank, an inlet duct and an outlet duct, wherein the inlet duct and the outlet duct are connected through the upper side of the tank, a liquid exchange pipe is connected to one side of the tank, and a heat dissipation coil is installed inside the tank, with one end of the heat dissipation coil being connected through the tank.

[0006] An air distribution plate is installed at the bottom of the air intake duct. The air distribution plate has a first air distribution hole evenly distributed inside. An air distribution frame is connected to the side of the air intake duct near the air distribution plate. The air distribution frame has a second air distribution hole evenly distributed inside.

[0007] Preferably, a heat-conducting mesh is connected to the top of the heat dissipation coil, and a filter frame is provided on the upper side of the heat-conducting mesh.

[0008] Preferably, the outer side of the filter frame is connected to the tank body, and an adsorbent is placed inside the filter frame.

[0009] Preferably, the filter frame is provided with an air guide frame and a baffle on its upper side, and the outer sides of the air guide frame and the baffle are welded to the tank body.

[0010] Preferably, an air guide pipe is connected to the upper side of the air guide frame, a shielding layer is welded to the bottom of the baffle, and the outer side of the air guide pipe is inserted into the shielding layer.

[0011] Preferably, a liquid guide pipe is provided between the air guide frame and the baffle, and both ends of the liquid guide pipe are installed through the tank body. The baffle has vent holes at equal intervals inside.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: the hydrogen filtration device of this hydrogen fuel cell system allows the hydrogen to fully react with the solution after being dispersed by the gas equalization plate and the gas equalization frame during filtration. It also has a filter frame with secondary filtration, which can effectively improve the filtration effect and efficiency of hydrogen. The multi-layer filtration structure can effectively remove impurities contained in the hydrogen, improve the quality of hydrogen, and solve the problem that the use of a single gas inlet pipe when introducing hydrogen into the hydrogen filter tank results in the gas not being evenly dispersed in the solution.

[0013] 1. The hydrogen filtration device of this hydrogen fuel cell system, in order to avoid the hydrogen not being uniformly dispersed in the solution, after the gas enters the inlet duct, it is transported to the gas equalization plate. After reacting with the solution inside the gas equalization plate, it is dispersed and escapes from the first gas equalization hole inside the gas equalization plate, contacts the solution inside the gas equalization frame, and is further dispersed through the second gas equalization hole, and then reacts fully with the solution on the upper side of the gas equalization frame. The hydrogen gas after preliminary filtration diffuses upward through the heat-conducting mesh until it contacts the adsorbent inside the filter frame for secondary filtration. The hydrogen filtration device of this hydrogen fuel cell system allows the hydrogen to fully contact the solution during filtration, and the filter frame with secondary filtration can effectively improve the filtration effect and efficiency of hydrogen.

[0014] 2. The hydrogen filtration device of this hydrogen fuel cell system, in order to further improve the quality of hydrogen filtration, when the hydrogen continues to diffuse upward along the gas guide frame after the adsorbent adsorbs internal impurities, it will be guided by the gas guide pipe on the upper side of the gas guide frame to the baffle and shielding layer. At this time, the remaining water vapor in the hydrogen will adhere to the inner wall of the baffle and shielding layer, and flow back to the lower side of the tank through the liquid guide pipe. At this time, the dried gas will diffuse upward through the exhaust port to the exhaust pipe for discharge. The hydrogen filtration device of this hydrogen fuel cell system is equipped with a multi-layer filtration structure, which can effectively remove impurities contained in the hydrogen and improve the quality of hydrogen. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the hydrogen filter canister of this utility model;

[0016] Figure 2 This is a top view of the heat-conducting mesh tray of this utility model;

[0017] Figure 3 This is a schematic diagram of the main cross-sectional structure of the gas equalization plate of this utility model;

[0018] Figure 4 This is a top view of the structure of the gas distribution plate of this utility model;

[0019] Figure 5 This is a schematic diagram of the three-dimensional structure of the baffle of this utility model.

[0020] In the diagram: 1. Tank body; 101. Air inlet duct; 102. Exhaust duct; 2. Liquid exchange pipe; 3. Heat dissipation coil; 4. Gas equalization plate; 401. First gas equalization hole; 402. Gas equalization frame; 403. Second gas equalization hole; 5. Heat-conducting mesh plate; 501. Filter frame; 502. Adsorbent; 6. Gas guide frame; 601. Gas guide pipe; 602. Baffle; 603. Shielding layer; 604. Liquid guide pipe; 605. Exhaust hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 This utility model provides a technical solution: a hydrogen filtration device for a hydrogen fuel cell system, including a tank 1, an inlet duct 101 and an exhaust duct 102. The inlet duct 101 and the exhaust duct 102 are connected through the upper side of the tank 1. A liquid exchange pipe 2 is connected to one side of the tank 1. A heat dissipation coil 3 is installed inside the tank 1, and one end of the heat dissipation coil 3 is connected through the tank 1.

[0023] A gas equalization plate 4 is installed at the bottom of the air intake duct 101. The gas equalization plate 4 has a first gas equalization hole 401 evenly distributed inside. A gas equalization frame 402 is connected to the side of the air intake duct 101 near the gas equalization plate 4. A second gas equalization hole 403 is evenly distributed inside the gas equalization frame 402. A heat-conducting mesh plate 5 is connected to the top of the heat-conducting mesh plate 3. A filter frame 501 is provided on the upper side of the heat-conducting mesh plate 5. The outer side of the filter frame 501 is connected to the tank body 1, and an adsorbent 502 is placed inside the filter frame 501.

[0024] In practice, to prevent hydrogen from being unable to disperse evenly inside the solution, the bottom of the inlet pipe 101 is connected to the gas equalization plate 4 and the gas equalization frame 402. When the gas enters the inlet pipe 101, it will be transported to the inside of the gas equalization plate 4 and react with the solution inside the gas equalization plate 4. After the gas reacts with the solution, it will be dispersed and escape from the first gas equalization hole 401 inside the gas equalization plate 4, and come into contact with the solution inside the gas equalization frame 402 again. It will then continue to diffuse upward through the second gas equalization hole 403 inside the gas equalization frame 402 and the gap between the gas equalization frame 402 and the tank 1. At this time, the hydrogen is fully dispersed and reacts fully with the solution on the upper side of the gas equalization frame 402 again. The hydrogen after preliminary filtration will diffuse upward through the heat-conducting mesh plate 5 until it comes into contact with the adsorbent 502 inside the filter frame 501 for secondary filtration.

[0025] One end of the heat dissipation coil 3 can conduct heat out of the tank 1, and the other end of the heat dissipation coil 3 will conduct heat to the heat-conducting mesh 5 to maintain the temperature on the upper side of the solution, so that the hydrogen can maintain a suitable temperature at the filter frame 501 and the adsorbent 502, thereby improving the filtration efficiency of hydrogen in the filter frame 501. The hydrogen filtration device of this hydrogen fuel cell system allows the hydrogen to fully contact the solution during filtration, and the filter frame 501 with secondary filtration can effectively improve the filtration effect and efficiency of hydrogen.

[0026] See Figure 1 and Figure 5 It is known that the filter frame 501 is provided with an air guide frame 6 and a baffle 602 on its upper side. The outer sides of the air guide frame 6 and the baffle 602 are welded to the tank body 1. An air guide pipe 601 is connected to the upper side of the air guide frame 6. A shielding layer 603 is welded to the bottom of the baffle 602, and the outer side of the air guide pipe 601 is inserted into the shielding layer 603. A liquid guide pipe 604 is provided between the air guide frame 6 and the baffle 602. Both ends of the liquid guide pipe 604 are installed through the tank body 1. Exhaust holes 605 are equidistantly opened inside the baffle 602.

[0027] In specific implementation, to further improve the quality of hydrogen filtration, when hydrogen continues to diffuse upward along the gas guide frame 6 after the adsorbent 502 adsorbs internal impurities, it will be guided by the gas guide pipe 601 on the upper side of the gas guide frame 6 to the baffle 602 and the shielding layer 603, and will make full contact with the baffle 602 and the shielding layer 603. At this time, the remaining water vapor in the hydrogen will adhere to the inner wall of the baffle 602 and the shielding layer 603, and slide down along the inner wall to the space between the gas guide frame 6 and the baffle 602. It will then flow back to the lower side of the tank 1 through the liquid guide pipe 604. At this time, the dried gas will diffuse upward through the exhaust port 605 to the exhaust pipe 102 for discharge. The hydrogen filtration device of this hydrogen fuel cell system is equipped with a multi-layer filtration structure, which can effectively remove impurities contained in the hydrogen and improve the quality of hydrogen.

[0028] In summary, when using the hydrogen filtration device of this hydrogen fuel cell system, after the hydrogen enters the tank 1 through the inlet pipe 101, it is dispersed by the gas equalization plate 4 and the gas equalization frame 402 to fully react with the solution, and diffuses upward through the heat-conducting mesh 5 until it comes into contact with the adsorbent 502 inside the filter frame 501 for secondary filtration. When the hydrogen after secondary filtration diffuses upward through the gas guide frame 6, the remaining water vapor inside is removed by the guide baffle 602 and the shielding layer 603 on the upper side of the gas guide frame 6. The thoroughly dried gas diffuses upward through the exhaust port 605 to the exhaust pipe 102 for discharge. The liquid replacement pipe 2 is used to replace the solution inside the tank 1. The contents not described in detail in this description are prior art known to those skilled in the art.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A hydrogen filtration device for a hydrogen fuel cell system, comprising a tank (1), an inlet duct (101), and an exhaust duct (102), characterized in that: An air inlet pipe (101) and an exhaust pipe (102) are connected through the upper side of the tank (1). A liquid exchange pipe (2) is connected to one side of the tank (1). A heat dissipation coil (3) is installed inside the tank (1), and one end of the heat dissipation coil (3) is connected through the tank (1). The bottom of the air intake duct (101) is equipped with an air equalization plate (4), and the air equalization plate (4) is evenly provided with first air equalization holes (401). The side of the air intake duct (101) near the air equalization plate (4) is connected to an air equalization frame (402), and the air equalization frame (402) is evenly provided with second air equalization holes (403).

2. The hydrogen filtration device for a hydrogen fuel cell system according to claim 1, characterized in that: The top of the heat dissipation coil (3) is connected to a heat-conducting mesh (5), and a filter frame (501) is provided on the upper side of the heat-conducting mesh (5).

3. The hydrogen filtration device for a hydrogen fuel cell system according to claim 2, characterized in that: The filter frame (501) is connected to the tank (1) on the outside, and an adsorbent (502) is placed inside the filter frame (501).

4. The hydrogen filtration device for a hydrogen fuel cell system according to claim 3, characterized in that: The filter frame (501) is provided with an air guide frame (6) and a baffle (602) on its upper side. The outer sides of the air guide frame (6) and the baffle (602) are welded to the tank body (1).

5. A hydrogen filtration device for a hydrogen fuel cell system according to claim 4, characterized in that: An air guide pipe (601) is connected to the upper side of the air guide frame (6), and a shielding layer (603) is welded to the bottom of the baffle (602), and the outer side of the air guide pipe (601) is inserted into the shielding layer (603).

6. The hydrogen filtration device for a hydrogen fuel cell system according to claim 5, characterized in that: A liquid guide pipe (604) is provided between the air guide frame (6) and the baffle (602). Both ends of the liquid guide pipe (604) are installed through the tank body (1). Exhaust holes (605) are provided at equal intervals inside the baffle (602).

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