Water vapor high-position exhaust system of hydrogen fuel forklift

Abstract

The invention discloses a hydrogen fuel forklift steam high-position exhaust system which is arranged on a forklift body provided with a fuel cell, the hydrogen fuel forklift steam high-position exhaust system comprises a gas guide transition device and an exhaust pipe assembly, one end of the gas guide transition device is connected with the fuel cell, and the other end of the gas guide transition device is connected with the exhaust pipe assembly. By arranging the gas guide transition device and the exhaust pipe assembly, water vapor generated by the fuel cell is guided to a high position to be discharged, and the condition that the water vapor forms condensed water at the bottom of the frame due to traditional downward exhaust is changed. The problems of paint surface damage, corrosion and the like caused by long-term water accumulation at the bottom of the frame are effectively avoided, so that the service life of the frame is prolonged, the integrity and stability of the forklift structure are guaranteed, and the overall reliability and durability of the forklift are improved.

Description

Technical Field

[0001] This invention relates to the field of new energy power forklift technology, and more specifically, to a high-level steam exhaust system for hydrogen fuel cell forklifts. Background Technology

[0002] With the gradual implementation of global carbon neutrality initiatives, new energy power is increasingly being applied to forklifts. For example, forklifts powered by lithium batteries and fuel cells are already on the market, and their market share is steadily increasing. For fuel cell-powered forklifts, the fuel cell generates water vapor during operation, which needs to be promptly discharged. Current exhaust methods have the following problems: water vapor typically discharges downwards, leading to condensation at the bottom of the frame. Prolonged accumulation of condensate damages the paint in this area, affecting the frame's lifespan. Patent CN119682568A discloses a fuel cell forklift exhaust treatment device. This invention collects water generated by the fuel cell and uses the exhaust gas to heat the water tank in low-temperature environments, preventing freezing and improving fuel cell system efficiency. However, this invention does not improve the exhaust method and does not solve the problem of water accumulation at the bottom of the frame. Summary of the Invention

[0003] In the prior art, the exhaust method of fuel cells is unreasonable, which can easily lead to water accumulation at the bottom of the frame and affect the service life of the frame. In order to overcome this defect, the present invention provides a high-level water vapor exhaust system for hydrogen fuel cell forklifts, which can optimize the exhaust direction and avoid water accumulation at the bottom of the frame.

[0004] The technical solution of this invention is: a high-level water vapor exhaust system for a hydrogen fuel cell forklift, installed on the forklift body equipped with a fuel cell. This system includes a gas guide transition device and an exhaust pipe assembly. One end of the gas guide transition device is connected to the fuel cell, and the other end is connected to the exhaust pipe assembly. By setting up the gas guide transition device and the exhaust pipe assembly, the water vapor generated by the fuel cell is guided to a high level for exhaust, changing the traditional downward exhaust situation where water vapor condenses at the bottom of the frame. This effectively avoids problems such as paint damage and corrosion at the bottom of the frame due to long-term water accumulation, thereby extending the service life of the frame, ensuring the integrity and stability of the forklift structure, and ultimately improving the overall reliability and durability of the forklift.

[0005] Preferably, the air guide transition device includes an air guide welded assembly and a transition hose. One end of the air guide welded assembly is connected to the air guide hose, and the other end is connected to the transition hose. The air guide welded assembly connects the transition hose and the air guide hose. The transition hose and the air guide hose have good flexibility, which can adapt to the vibration and relative displacement between components during forklift operation, ensuring that the exhaust system connection is stable and not easily loosened or detached due to vibration, thus ensuring smooth exhaust.

[0006] Preferably, a counterweight cover is provided at the rear of the forklift body, and the air guide welding assembly is fixed to the counterweight cover. The air guide welding assembly connects the transition hose and the air guide hose while also being fixed to the counterweight cover, limiting the displacement of the transition hose and the air guide hose. The counterweight cover provides a stable support point for the air guide transition device, ensuring the stability of the entire hydrogen fuel cell forklift's high-level water vapor exhaust system during forklift operation, especially under bumpy and vibrating conditions. This reduces component damage or exhaust obstruction caused by shaking, further ensuring the reliability of the exhaust system.

[0007] Preferably, the fuel cell has an exhaust port, and the gas guide transition device is connected to the exhaust port via a first annular clamp. The annular clamp can apply pressure evenly, ensuring a tight fit at the connection point and effectively preventing water vapor leakage. This excellent sealing performance guarantees the efficient operation of the exhaust system and avoids damage to other forklift components caused by water vapor leakage, such as moisture damage to electrical components and corrosion of metal parts.

[0008] Preferably, the transition hose is connected to the gas-conducting welding assembly via a second annular clamp. As mentioned earlier, the annular clamp can apply pressure evenly, ensuring a tight fit at the connection point and effectively preventing water vapor leakage.

[0009] Preferably, the exhaust pipe assembly includes an exhaust pipe and a heat shield, with the heat shield fitted over the exhaust pipe. The heat shield effectively prevents heat emitted from the exhaust pipe from affecting the cab at close range. This not only protects the forklift operator and some important components of the forklift from high temperatures, avoiding performance degradation and accelerated aging caused by prolonged heat exposure, but also improves the safety of forklift operation and prevents operators from being burned by accidental contact with the high-temperature exhaust pipe.

[0010] Preferably, the exhaust pipe assembly also includes a connecting plate, which is fixed inside the heat shield, and the exhaust pipe is threaded and fixed to the connecting plate. The connecting plate provides additional support for the exhaust pipe, enhancing its stability within the heat shield. Even with significant vibrations during forklift operation, the exhaust pipe is less prone to shaking or displacement, ensuring smooth and stable exhaust flow and extending its service life.

[0011] Preferably, the exhaust pipe assembly also includes a retainer through which the exhaust pipe passes. This design makes the installation of the exhaust pipe assembly easier and quicker.

[0012] Preferably, the fastener is an assembly structure. An assembly structure, rather than a one-piece molded structure, facilitates assembly during production and allows for easy disassembly and replacement during later maintenance.

[0013] Preferably, the forklift body is equipped with a top guard, and the exhaust pipe assembly is fixed to the top guard. Fixing the exhaust pipe assembly to the top guard further optimizes the layout of the exhaust system on the forklift, utilizes the structural advantages of the top guard, and ensures that the exhaust system is securely installed on the forklift without affecting the normal operation and other functions of the forklift.

[0014] The beneficial effects of this invention are: This invention helps eliminate water accumulation at the bottom of the frame. By optimizing the exhaust direction through the air guide transition device and exhaust pipe assembly, the invention can prevent water vapor from condensing and accumulating at the bottom of the frame, thus increasing the service life of the frame. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of one structure of the present invention.

[0016] Figure 2 This is a schematic diagram of one structure of the gas guiding and transition device in this invention.

[0017] Figure 3 This is a schematic diagram of one structure of the exhaust pipe assembly in this invention.

[0018] Figure 4 This is a schematic diagram of a forklift that utilizes the present invention.

[0019] In the diagram, 1-fuel cell, 2-counterweight cover plate, 3-air guide transition device, 301-air guide hose, 302-air guide welding assembly, 303-transition hose, 304-first annular clamp, 305-bolt assembly, 306-second annular clamp, 4-exhaust pipe assembly, 401-exhaust pipe, 402-heat shield, 403-connecting plate, 404-fixture, 5-overhead guard, 6-forklift body. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] Example 1: like Figures 1 to 4As shown, a high-level water vapor exhaust system for a hydrogen fuel cell forklift is installed on the forklift body 6. A fuel cell 1 is mounted at the bottom of the forklift body 6, a counterweight and a counterweight cover plate 2 are provided at the rear of the forklift body 6, and a top support frame 5 is provided at the top of the forklift body 6. The fuel cell 1 has an exhaust port. The counterweight cover plate 2 is placed on the counterweight. The top support frame 5 includes a canopy and top support frame legs, which are integrally formed. The top support frame legs are fixed to the forklift body 6 and suspend the canopy. This high-level water vapor exhaust system for the hydrogen fuel cell forklift includes a gas guide transition device 3 and an exhaust pipe assembly 4 connected to one end of the gas guide transition device 3. The other end of the gas guide transition device 3 is connected to the fuel cell 1. The air guide transition device 3 includes an air guide hose 301, an air guide welded assembly 302, a transition hose 303, a first annular clamp 304, a bolt assembly 305, and a second annular clamp 306. The air guide welded assembly 302 is fixed to the counterweight cover plate 2 by the bolt assembly 305. The counterweight cover plate 2 is generally not frequently disassembled. Installing the air guide welded assembly here makes reasonable use of idle space and does not interfere with the layout and operation of other important components of the forklift, thus helping to maintain the rationality and compactness of the overall layout of the forklift. The air guide welded assembly 302 is made of high-temperature and corrosion-resistant stainless steel to ensure that it will not be damaged under long-term contact with high-temperature water vapor. One end of it is connected to the air guide hose 301, which is made of rubber material with good flexibility and high-temperature resistance to ensure smooth connection with the exhaust port of the fuel cell 1. The other end of the air guide welded assembly 302 is connected by the transition hose 303, which also has high-temperature resistance and aging resistance. The bottom end of the vent hose 301 is connected to the exhaust port and fixed by the first annular clamp 304. The transition hose 303 is connected to the vent welding assembly 302 and fixed by the second annular clamp 306. This design of the vent transition device 3 makes the installation and disassembly of each component more convenient. During installation, the length and angle of the vent hose 301 and the transition hose 303 can be flexibly adjusted according to the actual situation, facilitating construction operations. When maintaining or replacing components, only the corresponding hoses and the vent welding assembly 302 need to be disassembled, which reduces maintenance difficulty and cost and improves maintenance efficiency.

[0022] The exhaust pipe assembly 4 includes an exhaust pipe 401, a heat shield 402, a connecting plate 403, and a fastener 404. The exhaust pipe 401 is made of stainless steel and has good high-temperature resistance and pressure resistance. The heat shield 402 is made of ceramic fiber material, which has excellent heat insulation properties and can effectively block the heat emitted by the exhaust pipe 401, preventing heat damage to surrounding components. The heat shield 402 is tightly fitted onto the exhaust pipe 401. The connecting plate 403 is annular and made of high-temperature resistant metal sheet. The outer periphery of the connecting plate 403 is attached to and welded to the inner wall of the heat shield 402, and the exhaust pipe 401 is fixed to the connecting plate 403. The exhaust pipe 401 of the exhaust pipe assembly 4 is fixed to the top support legs of the top support frame 5 by bolts connected to the fastener 404. The fastener 404 is an assembly structure composed of multiple parts. The exhaust pipe 401 is fixed to the connecting plate 403, further enhancing the stability of the exhaust pipe 401. The fastener 404 is designed as an assembly structure, facilitating installation and removal on the forklift body 6.

[0023] When the hydrogen fuel cell forklift equipped with this invention is in operation, the fuel cell 1 starts working and generates water vapor. The water vapor first enters the air guide welding assembly 302 through the air guide hose 301. Since the air guide welding assembly 302 is fixed to the counterweight cover plate 2 at the rear of the forklift body 6, the water vapor changes direction here and then enters the exhaust pipe assembly 4 through the transition hose 303. In the exhaust pipe assembly 4, the water vapor flows upward along the exhaust pipe 401 and is finally discharged from the top of the exhaust pipe 401. During this process, the heat shield 402 effectively blocks the heat emitted by the exhaust pipe 401, protecting the surrounding components. Because the water vapor is guided to a high position for discharge, it avoids the accumulation of condensate at the bottom of the frame. The components of this invention are organically combined and have a compact and reasonable layout, making full use of the existing space of the forklift. It does not affect the normal operation of the forklift and the operation of other functional components, and achieves efficient water vapor discharge, improving the space utilization and functionality of the forklift.

[0024] Example 2: A high-level steam exhaust system for a hydrogen fuel cell forklift is provided, mounted on the forklift body 6. A fuel cell 1 is installed at the bottom of the forklift body 6, a counterweight and a counterweight cover 2 are provided at the rear of the forklift body 6, and a top support frame 5 is provided at the top of the forklift body 6. The fuel cell 1 has an exhaust port. The counterweight cover 2 is placed on the counterweight. The top support frame 5 includes a canopy and top support frame legs, which are integrally formed. The top support frame legs are fixed to the forklift body 6 and elevate the canopy. This high-level steam exhaust system for the hydrogen fuel cell forklift includes a gas guide transition device 3 and an exhaust pipe assembly 4 connected to one end of the gas guide transition device 3. The other end of the gas guide transition device 3 is connected to the fuel cell 1. The air guide transition device 3 includes an air guide hose 301, an air guide welded assembly 302, a transition hose 303, a first annular clamp 304, a bolt assembly 305, and a second annular clamp 306. The air guide welded assembly 302 is fixed to the counterweight cover plate 2 by the bolt assembly 305. The counterweight cover plate 2 is generally not frequently disassembled. Installing the air guide welded assembly here makes reasonable use of idle space and does not interfere with the layout and operation of other important components of the forklift, thus helping to maintain the rationality and compactness of the overall layout of the forklift. The air guide welded assembly 302 is made of high-temperature and corrosion-resistant stainless steel to ensure that it will not be damaged under long-term contact with high-temperature water vapor. One end of it is connected to the air guide hose 301, which is made of rubber material with good flexibility and high-temperature resistance to ensure smooth connection with the exhaust port of the fuel cell 1. The other end of the air guide welded assembly 302 is connected by the transition hose 303, which also has high-temperature resistance and aging resistance. The bottom end of the vent hose 301 is connected to the exhaust port and fixed by the first annular clamp 304. The transition hose 303 is connected to the vent welding assembly 302 and fixed by the second annular clamp 306. This design of the vent transition device 3 makes the installation and disassembly of each component more convenient. During installation, the length and angle of the vent hose 301 and the transition hose 303 can be flexibly adjusted according to the actual situation, facilitating construction operations. When maintaining or replacing components, only the corresponding hoses and the vent welding assembly 302 need to be disassembled, which reduces maintenance difficulty and cost and improves maintenance efficiency.

[0025] The exhaust pipe assembly 4 includes an exhaust pipe 401, a heat shield 402, a connecting plate 403, and a fixing member 404. The exhaust pipe 401 is made of stainless steel and has good high-temperature resistance and pressure resistance. The heat shield 402 is made of ceramic fiber material, which has excellent heat insulation properties and can effectively block the heat emitted by the exhaust pipe 401, avoiding heat damage to surrounding components. The heat shield 402 is tightly fitted onto the outside of the exhaust pipe 401. The connecting plate 403 is annular and made of high-temperature resistant metal sheet. The outer periphery of the connecting plate 403 is attached to and welded to the inner wall of the heat shield 402, and the exhaust pipe 401 is fixed to the connecting plate 403. Unlike embodiment 1, in this embodiment, the exhaust pipe 401 of the exhaust pipe assembly 4 is fixed by a locking engagement structure between the fixing member 404 and the support leg of the top support frame 5. The fixing member 404 is an assembly structure composed of multiple components. The exhaust pipe 401 is fixed to the connecting plate 403, further enhancing the stability of the exhaust pipe 401. The fastener 404 is designed as an assembly structure, facilitating installation and removal on the forklift body 6. The rest is the same as in Embodiment 1.

[0026] When the hydrogen fuel cell forklift equipped with this invention is in operation, the fuel cell 1 starts working and generates water vapor. The water vapor first enters the air guide welding assembly 302 through the air guide hose 301. Since the air guide welding assembly 302 is fixed to the counterweight cover plate 2 at the rear of the forklift body 6, the water vapor changes direction here and then enters the exhaust pipe assembly 4 through the transition hose 303. In the exhaust pipe assembly 4, the water vapor flows upward along the exhaust pipe 401 and is finally discharged from the top of the exhaust pipe 401. During this process, the heat shield 402 effectively blocks the heat emitted by the exhaust pipe 401, protecting the surrounding components. Because the water vapor is guided to a high position for discharge, it avoids the accumulation of condensate at the bottom of the frame. The components of this invention are organically combined and have a compact and reasonable layout, making full use of the existing space of the forklift. It does not affect the normal operation of the forklift and the operation of other functional components, and achieves efficient water vapor discharge, improving the space utilization and functionality of the forklift.

[0027] Example 3: A high-level steam exhaust system for a hydrogen fuel cell forklift is provided, mounted on the forklift body 6. A fuel cell 1 is installed at the bottom of the forklift body 6, a counterweight and a counterweight cover 2 are provided at the rear of the forklift body 6, and a top support frame 5 is provided at the top of the forklift body 6. The fuel cell 1 has an exhaust port. The counterweight cover 2 is placed on the counterweight. The top support frame 5 includes a canopy and top support frame legs, which are integrally formed. The top support frame legs are fixed to the forklift body 6 and elevate the canopy. This high-level steam exhaust system for the hydrogen fuel cell forklift includes a gas guide transition device 3 and an exhaust pipe assembly 4 connected to one end of the gas guide transition device 3. The other end of the gas guide transition device 3 is connected to the fuel cell 1. The air guide transition device 3 includes an air guide hose 301, an air guide welded assembly 302, a transition hose 303, a first annular clamp 304, a bolt assembly 305, and a second annular clamp 306. The air guide welded assembly 302 is fixed to the counterweight cover plate 2 by the bolt assembly 305. The counterweight cover plate 2 is generally not frequently disassembled. Installing the air guide welded assembly here makes reasonable use of idle space and does not interfere with the layout and operation of other important components of the forklift, thus helping to maintain the rationality and compactness of the overall layout of the forklift. The air guide welded assembly 302 is made of high-temperature and corrosion-resistant stainless steel to ensure that it will not be damaged under long-term contact with high-temperature water vapor. One end of it is connected to the air guide hose 301, which is made of rubber material with good flexibility and high-temperature resistance to ensure smooth connection with the exhaust port of the fuel cell 1. The other end of the air guide welded assembly 302 is connected by the transition hose 303, which also has high-temperature resistance and aging resistance. The bottom end of the vent hose 301 is connected to the exhaust port and fixed by the first annular clamp 304. The transition hose 303 is connected to the vent welding assembly 302 and fixed by the second annular clamp 306. This design of the vent transition device 3 makes the installation and disassembly of each component more convenient. During installation, the length and angle of the vent hose 301 and the transition hose 303 can be flexibly adjusted according to the actual situation, facilitating construction operations. When maintaining or replacing components, only the corresponding hoses and the vent welding assembly 302 need to be disassembled, which reduces maintenance difficulty and cost and improves maintenance efficiency.

[0028] The exhaust pipe assembly 4 includes an exhaust pipe 401, a heat shield 402, a connecting plate 403, and a fastener 404. The exhaust pipe 401 is made of stainless steel, possessing excellent high-temperature resistance and pressure resistance. The heat shield 402 is made of ceramic fiber material, which has excellent heat insulation properties, effectively blocking the heat emitted by the exhaust pipe 401 and preventing heat damage to surrounding components. The heat shield 402 is tightly fitted onto the exhaust pipe 401. The connecting plate 403 is annular and made of high-temperature resistant metal sheet. The outer periphery of the connecting plate 403 is bonded and welded to the inner wall of the heat shield 402, and the exhaust pipe 401 is fixed to the connecting plate 403. The exhaust pipe 401 of the exhaust pipe assembly 4 is fixed to the support legs of the top support frame 5 via bolts connected to the fastener 404. The connection of the exhaust pipe 401 to the connecting plate 403 further enhances the stability of the exhaust pipe 401. Unlike Embodiment 1, in this embodiment, the fixing member 404 includes an annular clamp and a straight fixing arm. The annular clamp and the fixing arm are integrally formed from a bent steel sheet. The annular clamp is used to hold the exhaust pipe 401, and the fixing arm is used to fit against the surface of the top support leg and install bolts. The rest is the same as in Embodiment 1.

[0029] When the hydrogen fuel cell forklift equipped with this invention is in operation, the fuel cell 1 starts working and generates water vapor. The water vapor first enters the air guide welding assembly 302 through the air guide hose 301. Since the air guide welding assembly 302 is fixed to the counterweight cover plate 2 at the rear of the forklift body 6, the water vapor changes direction here and then enters the exhaust pipe assembly 4 through the transition hose 303. In the exhaust pipe assembly 4, the water vapor flows upward along the exhaust pipe 401 and is finally discharged from the top of the exhaust pipe 401. During this process, the heat shield 402 effectively blocks the heat emitted by the exhaust pipe 401, protecting the surrounding components. Because the water vapor is guided to a high position for discharge, it avoids the accumulation of condensate at the bottom of the frame. The components of this invention are organically combined and have a compact and reasonable layout, making full use of the existing space of the forklift. It does not affect the normal operation of the forklift and the operation of other functional components, and achieves efficient water vapor discharge, improving the space utilization and functionality of the forklift.

[0030] Example 4: A high-level steam exhaust system for a hydrogen fuel cell forklift is provided, mounted on the forklift body 6. A fuel cell 1 is installed at the bottom of the forklift body 6, a counterweight and a counterweight cover 2 are provided at the rear of the forklift body 6, and a top support frame 5 is provided at the top of the forklift body 6. The fuel cell 1 has an exhaust port. The counterweight cover 2 is placed on the counterweight. The top support frame 5 includes a canopy and top support frame legs, which are integrally formed. The top support frame legs are fixed to the forklift body 6 and elevate the canopy. This high-level steam exhaust system for the hydrogen fuel cell forklift includes a gas guide transition device 3 and an exhaust pipe assembly 4 connected to one end of the gas guide transition device 3. The other end of the gas guide transition device 3 is connected to the fuel cell 1. The air guide transition device 3 includes an air guide hose 301, an air guide welded assembly 302, a transition hose 303, a first annular clamp 304, a bolt assembly 305, and a second annular clamp 306. The air guide welded assembly 302 is fixed to the counterweight cover plate 2 by the bolt assembly 305. The counterweight cover plate 2 is generally not frequently disassembled. Installing the air guide welded assembly here makes reasonable use of idle space and does not interfere with the layout and operation of other important components of the forklift, thus helping to maintain the rationality and compactness of the overall layout of the forklift. The air guide welded assembly 302 is made of high-temperature and corrosion-resistant stainless steel to ensure that it will not be damaged under long-term contact with high-temperature water vapor. One end of it is connected to the air guide hose 301, which is made of rubber material with good flexibility and high-temperature resistance to ensure smooth connection with the exhaust port of the fuel cell 1. The other end of the air guide welded assembly 302 is connected by the transition hose 303, which also has high-temperature resistance and aging resistance. The bottom end of the vent hose 301 is connected to the exhaust port and fixed by the first annular clamp 304. The transition hose 303 is connected to the vent welding assembly 302 and fixed by the second annular clamp 306. This design of the vent transition device 3 makes the installation and disassembly of each component more convenient. During installation, the length and angle of the vent hose 301 and the transition hose 303 can be flexibly adjusted according to the actual situation, facilitating construction operations. When maintaining or replacing components, only the corresponding hoses and the vent welding assembly 302 need to be disassembled, which reduces maintenance difficulty and cost and improves maintenance efficiency.

[0031] The exhaust pipe assembly 4 includes an exhaust pipe 401, a heat shield 402, a connecting plate 403, and a fastener 404. The exhaust pipe 401 is made of stainless steel and has good high-temperature resistance and pressure resistance. The heat shield 402 is made of ceramic fiber material, which has excellent heat insulation properties and can effectively block the heat emitted by the exhaust pipe 401, preventing heat damage to surrounding components. The heat shield 402 is tightly fitted onto the exhaust pipe 401. The connecting plate 403 is annular and made of high-temperature resistant metal sheet. The outer periphery of the connecting plate 403 is attached to and welded to the inner wall of the heat shield 402, and the exhaust pipe 401 is fixed to the connecting plate 403. The exhaust pipe 401 of the exhaust pipe assembly 4 is fixed to the top support legs of the top support frame 5 by bolts connected to the fastener 404. The fastener 404 is an assembly structure composed of multiple parts. The exhaust pipe 401 is fixed to the connecting plate 403, further enhancing the stability of the exhaust pipe 401. The fixing component 404 is designed as an assembly structure, facilitating installation and removal on the forklift body 6. Unlike Embodiment 1, in this embodiment, the exhaust pipe assembly 4 also includes a condensate tank, which is fixed to the forklift body 6. The forklift body 6 is connected to the bottom of the cavity between the exhaust pipe 401 and the heat shield 402 via a guide pipe. The rest is the same as in Embodiment 1.

[0032] When the hydrogen fuel cell forklift equipped with this invention is in operation, the fuel cell 1 starts working and generates water vapor. The water vapor first enters the air guide welding assembly 302 through the air guide hose 301. Since the air guide welding assembly 302 is fixed to the counterweight cover plate 2 at the rear of the forklift body 6, the water vapor changes direction here and then enters the exhaust pipe assembly 4 through the transition hose 303. In the exhaust pipe assembly 4, the water vapor flows upward along the exhaust pipe 401 and is finally discharged from the top of the exhaust pipe 401. During this process, the heat shield 402 effectively blocks the heat emitted by the exhaust pipe 401, protecting the surrounding components. Because the water vapor is guided to a high position for discharge, it avoids the accumulation of condensate at the bottom of the frame. The components of this invention are organically combined and have a compact and reasonable layout, making full use of the existing space of the forklift. It does not affect the normal operation of the forklift and the operation of other functional components, and achieves efficient water vapor discharge, improving the space utilization and functionality of the forklift.

Claims

1. A high-level steam exhaust system for a hydrogen fuel cell forklift, mounted on the forklift body (6) equipped with a fuel cell (1), characterized in that, It includes a gas guide transition device (3) and an exhaust pipe assembly (4). One end of the gas guide transition device (3) is connected to the fuel cell (1), and the other end is connected to the exhaust pipe assembly (4).

2. The hydrogen fuel cell forklift steam high-level exhaust system according to claim 1, characterized in that, The gas guiding transition device (3) includes a gas guiding welding assembly (302) and a transition hose (303). One end of the gas guiding welding assembly (302) is connected to the gas guiding hose (301), and the other end is connected to the transition hose (303).

3. The hydrogen fuel cell forklift steam high-level exhaust system according to claim 2, characterized in that, The rear of the forklift body (6) is equipped with a counterweight cover plate (2), and the air guide welding assembly (302) is fixed on the counterweight cover plate (2).

4. The hydrogen fuel cell forklift steam high-level exhaust system according to claim 2, characterized in that, The fuel cell (1) has an exhaust port, and the gas guide transition device (3) is connected to the exhaust port through a first annular clamp (304).

5. The hydrogen fuel cell forklift steam high-level exhaust system according to claim 2, characterized in that, transition... The hose (303) is connected to the gas guide welding assembly (302) via the second annular clamp (306).

6. The hydrogen fuel cell forklift steam high-level exhaust system according to claim 1, characterized in that, The exhaust pipe assembly (4) includes an exhaust pipe (401) and a heat shield (402), which is fitted over the exhaust pipe (401).

7. The hydrogen fuel cell forklift steam high-level exhaust system according to claim 6, characterized in that, The exhaust pipe assembly (4) also includes a connecting plate (403), which is fixed inside the heat insulation cover (402), and the exhaust pipe (401) is fixed through the connecting plate (403).

8. The hydrogen fuel cell forklift steam high-level exhaust system according to claim 6, characterized in that, The exhaust pipe assembly (4) also includes a fastener (404), through which the exhaust pipe (401) is fixed to the forklift body (6).

9. The hydrogen fuel cell forklift steam high-level exhaust system according to claim 8, characterized in that, The fastener (44) is an assembly structure.

10. The hydrogen fuel cell forklift steam high-level exhaust system according to any one of claims 1 to 9, characterized in that, The forklift body (6) is equipped with a top guard (5), and the exhaust pipe assembly (4) is fixed to the top guard (5).

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