Fuel cell forklift tail emission treatment device and treatment method, fuel cell forklift and storage medium

Abstract

The invention discloses a fuel cell forklift tail gas treatment device which comprises a water storage tank connected with a fuel cell system and used for receiving water and tail gas from the fuel cell system, a water storage chamber and a gas chamber are arranged in the water storage tank, and the water discharged by the fuel cell system enters the water storage chamber; exhaust gas exhausted by the fuel cell system enters the gas chamber, and the gas chamber and the water storage chamber are arranged adjacently, so that heat of the exhaust gas is transferred to water in the water storage chamber. According to the fuel cell forklift tail emission treatment device, water generated by working of a fuel cell is collected, gas generated by tail emission is used for heating the water storage tank in a low-temperature environment, the water storage tank is prevented from being frozen, and the efficiency of a fuel cell system can be improved. The invention further discloses a fuel cell forklift tail emission processing method, a fuel cell forklift and a computer readable storage medium.

Description

Technical Field

[0001] The present invention belongs to the technical field of fuel cells, and in particular, relates to a fuel cell forklift tail exhaust processing device, a processing method, a fuel cell forklift and a storage medium. Background Art

[0003] With the development of fuel cell technology, fuel cells are increasingly used in the transportation field. They have been applied to forklifts, which are used indoors or outdoors. Fuel cell forklifts generate water when working, and the water is normally discharged directly. However, when the forklift is running indoors, the discharged water will cause water accumulation indoors, affecting indoor work safety. When the forklift is running outdoors, especially when the temperature is relatively low, the generated water may freeze after being directly discharged, causing safety accidents. In the prior art, the water generated by the reaction of the fuel cell system is collected, and the collected water is heated to prevent freezing, but this will bring additional power consumption losses and reduce the efficiency of the fuel cell system.

[0004] It is desirable to provide a fuel cell forklift tail exhaust processing device, particularly with regard to how to improve the efficiency of the fuel cell system. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a fuel cell forklift tail exhaust processing device, the purpose of which is to improve the efficiency of the fuel cell system.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a fuel cell forklift tail exhaust processing device, including a water storage tank connected to the fuel cell system and used to receive water and tail exhaust gases from the fuel cell system, a water storage chamber and a gas chamber are arranged in the water storage tank, the water discharged from the fuel cell system enters the water storage chamber, and the tail exhaust gas discharged from the fuel cell system enters the gas chamber, and the gas chamber and the water storage chamber are arranged adjacent to each other, so that the heat of the tail exhaust gases is transferred to the water in the water storage chamber.

[0007] The gas chamber surrounds the water storage chamber.

[0008] A silencer plate is arranged in the gas chamber, and silencer cotton is arranged in the silencer plate.

[0009] A plurality of the sound-absorbing panels are provided.

[0010] There are three silencer plates in total, which are respectively a first silencer plate, a second silencer plate and a third silencer plate. The first silencer plate, the second silencer plate and the third silencer plate are arranged sequentially along a set direction. A first silencer cavity is formed between the air inlet and the first silencer plate, a second silencer cavity is formed between the first silencer plate and the second silencer plate, and a third silencer cavity is formed between the second silencer plate and the third silencer plate.

[0011] The sound-absorbing plate is provided with a drainage hole.

[0012] The water storage tank comprises a box body and an upper cover arranged on the box body, and a liquid level sensor, an air inlet and a water inlet are arranged on the upper cover.

[0013] The present invention also provides a method for processing tail exhaust of a fuel cell forklift, which adopts the tail exhaust processing device of the fuel cell forklift and comprises:

[0014] The water discharged from the fuel cell system enters the water storage chamber in the water storage tank, and the tail gas discharged from the fuel cell system enters the gas chamber in the water storage tank. The heat of the tail gas is transferred to the water in the water storage chamber to heat the water in the water storage chamber.

[0015] The present invention also provides a fuel cell forklift, comprising the fuel cell forklift tail exhaust processing device.

[0016] The present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute the fuel cell forklift tail exhaust processing method.

[0017] The fuel cell forklift tail exhaust treatment device of the present invention collects water generated by the operation of the fuel cell, and uses the gas generated by the tail exhaust to heat the water tank in a low temperature environment to prevent the water tank from freezing, thereby improving the efficiency of the fuel cell system; at the same time, the fuel cell muffler is integrated to improve space utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a tail exhaust treatment device for a fuel cell forklift of the present invention;

[0019] Figure 2 It is a structural diagram of the box;

[0020] Figure 3 It is a schematic diagram of the structure of the muffler panel;

[0021] The markings in the above figures are: 1. air inlet; 2. water inlet; 3. upper cover; 4. box body; 5. liquid level sensor; 6. fixing hole; 7. exhaust port; 8. drain valve; 9. first drain port; 10. silencer plate; 101. first silencer plate; 102. second silencer plate; 103. third silencer plate; 111. first silencer chamber; 112. second silencer chamber; 113. third silencer chamber; 12. water storage chamber; 13. second sealing ring; 14. first sealing ring; 15. second drain port; 16. silencer hole; 17. silencer cotton; 18. drain hole. DETAILED DESCRIPTION

[0022] The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solution of the present invention and facilitating its implementation.

[0023] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower" and similar expressions used in this article are for illustrative purposes only.

[0024] It should be noted that, in the following embodiments, the “first”, “second” and “third” mentioned do not represent an absolute distinction in structure and / or function, nor do they represent a sequence of execution, but are merely for the convenience of description.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field to which the present invention belongs. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] like Figures 1 to 3 As shown, the present invention provides a fuel cell forklift tail exhaust processing device, including a water storage tank connected to the fuel cell system and used for receiving water and tail exhaust gas from the fuel cell system, a water storage chamber 12 and a gas chamber are arranged in the water storage tank, water discharged from the fuel cell system enters the water storage chamber 12, and tail exhaust gas discharged from the fuel cell system enters the gas chamber, and the gas chamber and the water storage chamber 12 are arranged adjacent to each other, so that the heat of the tail exhaust gas is transferred to the water in the water storage chamber 12.

[0027] The gas chamber surrounds the water storage chamber 12 .

[0028] A silencer plate 10 is arranged in the gas chamber, and silencer cotton 17 is arranged in the silencer plate 10 .

[0029] A plurality of the sound-absorbing panels 10 are provided.

[0030] There are three silencer plates 10 in total, which are respectively a first silencer plate 101, a second silencer plate 102 and a third silencer plate 103. The first silencer plate 101, the second silencer plate 102 and the third silencer plate 103 are arranged sequentially along a set direction. A first silencer cavity 111 is formed between the air inlet 1 and the first silencer plate 101, a second silencer cavity 112 is formed between the first silencer plate 101 and the second silencer plate 102, and a third silencer cavity 113 is formed between the second silencer plate 102 and the third silencer plate 103.

[0031] The muffler plate 10 is provided with a drainage hole 18 .

[0032] The water storage tank comprises a box body 4 and an upper cover 3 arranged on the box body 4 , and a liquid level sensor 5 , an air inlet 1 and a water inlet 2 are arranged on the upper cover 3 .

[0033] The present invention also provides a method for processing tail exhaust of a fuel cell forklift, which adopts the tail exhaust processing device of the fuel cell forklift and comprises:

[0034] The water discharged from the fuel cell system enters the water storage chamber 12 in the water storage tank, and the tail gas discharged from the fuel cell system enters the gas chamber in the water storage tank. The heat of the tail gas is transferred to the water in the water storage chamber 12 to heat the water in the water storage chamber 12.

[0035] The present invention also provides a fuel cell forklift, comprising the fuel cell forklift tail exhaust processing device.

[0036] The present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute the fuel cell forklift tail exhaust processing method.

[0037] Example

[0038] In a first aspect of the present invention, Figures 1 to 3 As shown, an embodiment of the present invention provides a fuel cell forklift tail exhaust processing device, including a water tank connected to the fuel cell system and used to receive water and tail exhaust gas from the fuel cell system, a water storage chamber 12 and a gas chamber are arranged in the water tank, water discharged from the fuel cell system enters the water storage chamber 12, and tail exhaust gas discharged from the fuel cell system enters the gas chamber, and the gas chamber and the water storage chamber 12 are arranged adjacent to each other, so that the heat of the tail exhaust gas is transferred to the water in the water storage chamber 12.

[0039] Specifically, a fuel cell system is provided on a fuel cell forklift, which is used to provide driving force for the forklift. The fuel cell forklift will generate water when working. The water discharged from the fuel cell system reaction is collected in a water tank, and the tail gas of the fuel cell is used to perform heat exchange on the water tank to prevent the water in the water tank from freezing and being difficult to discharge. No additional power consumption loss will be generated, and the efficiency of the fuel cell system can be improved.

[0040] like Figure 1 and Figure 2 As shown, in an embodiment of the present invention, the gas chamber surrounds the water storage chamber 12, and the gas chambers are distributed around the water storage chamber 12. By arranging the gas chamber adjacent to the water storage chamber 12, the tail gas discharged by the fuel cell system can directly transfer heat to the water in the water storage chamber 12. This design not only effectively utilizes the thermal energy of the tail gas, but also helps to maintain or increase the temperature of the water in the water storage chamber 12, thereby preventing the water from freezing in a low temperature environment. The device does not require additional energy to heat the water in the water storage chamber 12, but directly uses the tail gas generated by the fuel cell system for heat exchange. This not only reduces energy consumption, but also reduces emissions that may be generated by heating. The design of the gas chamber surrounding the water storage chamber 12 makes the entire tail exhaust treatment device more compact in structure, which is conducive to saving space on the forklift. This compact layout also helps to improve the overall stability and ease of operation of the forklift. By efficiently utilizing the thermal energy of the tail gas, it also helps to improve the overall efficiency of the fuel cell system and extend the service life of the forklift.

[0041] like Figure 2 and Figure 3 As shown, in the embodiment of the present invention, a silencer plate 10 is provided in the gas chamber, a silencer cotton 17 is provided in the silencer plate 10, and a plurality of densely distributed silencer holes 16 are provided on the silencer plate 10, and the silencer holes 16 are through holes provided along the thickness direction of the silencer plate 10. A silencer structure is provided in the water tank to silence the tail exhaust gas. Multiple silencer plates 10 are provided, and all silencer plates 10 are arranged in sequence along a set direction, which is the gas flow direction in the gas chamber and is parallel to the length direction of the gas chamber.

[0042] In an embodiment of the present invention, the combination of the silencer plate 10 and the silencer cotton 17 can effectively absorb and reflect the sound waves of the tail gas, thereby significantly reducing the noise level. The design of the silencer hole 16 further enhances the silencing effect, so that the sound waves are more obstructed and dissipated when passing through the silencer hole 16, thereby achieving a better noise reduction effect. The silencer plates 10 are arranged in sequence along the gas flow direction to ensure that the tail gas can pass through the gas chamber smoothly while being fully processed by the silencer structure. This design not only maintains the stability of the airflow, but also avoids the additional noise generated by the obstruction of the airflow. The provision of the silencer plate 10 also enhances the structural strength of the gas chamber, enabling it to better withstand internal pressure and external impact. This is of great significance for improving the reliability and durability of the entire tail exhaust treatment device.

[0043] like Figure 2 and Figure 3 As shown, in the embodiment of the present invention, three silencer plates 10 are provided, and the three silencer plates 10 are respectively the first silencer plate 101, the second silencer plate 102 and the third silencer plate 103. The first silencer plate 101, the second silencer plate 102 and the third silencer plate 103 are arranged in sequence along the set direction. A first silencer cavity 111 is formed between the air inlet 1 and the first silencer plate 101, a second silencer cavity 112 is formed between the first silencer plate 101 and the second silencer plate 102, and a third silencer cavity 113 is formed between the second silencer plate 102 and the third silencer plate 103. The tail exhaust gas passes through the first silencer cavity 111, the second silencer cavity 112 and the third silencer cavity 113 in series. Under the effect of the acoustic resistance between the silencer plates 10 and the silencer cotton 17, the noise at a specific frequency can be reduced, and the effect of silencing can be achieved. This multi-stage silencer design can more effectively reduce the noise of tail exhaust gases, especially the noise at specific frequencies. Each stage of the silencer cavity can absorb, reflect and dissipate the sound waves to a certain extent.

[0044] like Figure 2 and Figure 3 As shown, in an embodiment of the present invention, a drainage hole 18 is provided on the silencer plate 10, and the drainage hole 18 is located at the bottom of the silencer plate 10, and the bottom of the silencer plate 10 is close to the bottom wall of the gas chamber. The drainage hole 18 is a through hole provided along the thickness direction of the silencer plate 10, and a plurality of drainage holes 18 are provided. Trace water that is not completely separated by the gas-water separator of the fuel cell system and the gas with a higher temperature enter the gas chamber together, and liquefy to produce water when encountering a low temperature environment. This part of water can be discharged from the drainage hole 18 at the bottom of the silencer plate 10 under the action of the airflow, and finally discharged from the gas chamber to avoid accumulation in the gas chamber. Accumulated water may cause pressure changes inside the gas chamber, thereby affecting the stability of the fuel cell system. By draining water in time, this design helps to keep the pressure inside the gas chamber stable, thereby ensuring the normal operation of the fuel cell system.

[0045] like Figure 1 and Figure 2 As shown, in an embodiment of the present invention, the water storage tank includes a box body 4 and an upper cover 3 arranged on the box body 4. The box body 4 is a structure with an opening at the top, a closed bottom wall and a hollow interior. The gas chamber and the water storage chamber 12 are cavities arranged in the box body 4. The upper cover 3 is used to close the top opening of the box body 4. The upper cover 3 is provided with a liquid level sensor 5, an air inlet 1 and a water inlet 2. The water inlet 2 is connected to the water outlet of the fuel cell system, the air inlet 1 is connected to the air outlet of the fuel cell system, the water inlet 2 is connected to the water storage chamber 12, and the air inlet 1 is connected to the gas chamber. The tail discharge of the fuel cell system during operation includes a mixture of generated water and unreacted gas, which will be separated from gas and water after passing through the gas-water separator. The water separated by the gas-water separator enters the water storage chamber 12 through the water inlet 2, and the water generated by the fuel cell system is collected to avoid direct discharge in a low temperature environment to cause the risk of freezing.

[0046] An exhaust port 7 and a drain valve 8 are provided at the end of the box body 4 away from the air inlet 1 and the water inlet 2. The exhaust port 7 is connected to the gas chamber, and the silenced gas is discharged to the outside through the exhaust port 7. The water storage chamber 12 is connected to the second drain port 15. The end of the second drain port 15 is provided with a drain valve 8. The water in the water storage chamber 12 is discharged to the outside through the second drain port 15. The liquid level sensor 5 is used to monitor the liquid level height in the water storage chamber 12.

[0047] like Figure 1 and Figure 2 As shown, a liquid level sensor 5 is provided on the upper cover 3, which can detect the liquid level height in the water storage chamber 12. When the liquid level height reaches the set liquid level height, the liquid level sensor 5 transmits a signal to the dashboard of the forklift. The driver opens the drain valve 8 according to the dashboard information and drains the water in the water storage chamber 12 through the first drain port 9 on the drain valve 8.

[0048] like Figure 1 and Figure 2 As shown, a first sealing groove is provided on the top of the water storage chamber 12, and a first sealing ring 14 is provided in the first sealing groove. The first sealing ring 14 is used to achieve sealing between the upper cover 3 and the water storage chamber 12. A second sealing groove is provided on the top of the gas chamber, and a second sealing ring 13 is provided in the second sealing groove. The second sealing ring 13 is used to achieve sealing between the upper cover 3 and the gas chamber. The upper cover 3 is equipped with four fixing holes 6 and two sealing rings to isolate the gas chamber and the water storage chamber 12 into two relatively independent systems.

[0049] In a second aspect of the present invention, an embodiment of the present invention further provides a method for processing tail exhaust of a fuel cell forklift, using a fuel cell forklift tail exhaust processing device, and comprising:

[0050] The water discharged from the fuel cell system enters the water storage chamber 12 in the water tank, and the tail gas discharged from the fuel cell system enters the gas chamber in the water tank. The heat of the tail gas is transferred to the water in the water storage chamber 12 to heat the water in the water storage chamber 12.

[0051] In a low temperature environment, the water storage chamber 12 will freeze, and the gas separated by the gas-water separator will enter the gas chamber through the air inlet 1. The temperature of the gas discharged from the fuel cell system is 70-80°C. The gas in the gas chamber can exchange heat with the water in the water storage chamber 12 to prevent the water in the water storage chamber 12 from freezing and causing system failure.

[0052] In a third aspect of the present invention, an embodiment of the present invention further provides a fuel cell forklift, comprising the fuel cell forklift tail exhaust processing device of the above structure.

[0053] In a fourth aspect of the present invention, an embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute the above-mentioned fuel cell forklift tail exhaust processing method.

[0054] The device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separated, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0055] It will be appreciated by those skilled in the art that all or some of the steps and systems in the disclosed method above may be implemented as software, firmware, hardware and appropriate combinations thereof. Some physical components or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor or a microprocessor, or may be implemented as hardware, or may be implemented as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or a non-transitory medium) and a communication medium (or a temporary medium). As known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage or other magnetic storage devices, or any other medium that may be used to store desired information and may be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0056] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A fuel cell forklift tail exhaust treatment device, characterized in that: The invention comprises a water storage tank connected to the fuel cell system and used for receiving water and tail gas from the fuel cell system. A water storage chamber and a gas chamber are arranged in the water storage tank. Water discharged from the fuel cell system enters the water storage chamber, and tail gas discharged from the fuel cell system enters the gas chamber. The gas chamber and the water storage chamber are arranged adjacent to each other so that the heat of the tail gas is transferred to the water in the water storage chamber.

2. The tail exhaust treatment device of a fuel cell forklift according to claim 1, characterized in that: The gas chamber surrounds the water storage chamber.

3. The tail exhaust treatment device of a fuel cell forklift according to claim 2, characterized in that: A silencer plate is arranged in the gas chamber, and silencer cotton is arranged in the silencer plate.

4. The tail exhaust treatment device of a fuel cell forklift according to claim 3, characterized in that: A plurality of the sound-absorbing panels are provided.

5. The tail exhaust treatment device of a fuel cell forklift according to claim 4, characterized in that: There are three silencer plates in total, which are respectively a first silencer plate, a second silencer plate and a third silencer plate. The first silencer plate, the second silencer plate and the third silencer plate are arranged sequentially along a set direction. A first silencer cavity is formed between the air inlet and the first silencer plate, a second silencer cavity is formed between the first silencer plate and the second silencer plate, and a third silencer cavity is formed between the second silencer plate and the third silencer plate.

6. The tail exhaust treatment device for a fuel cell forklift according to any one of claims 3 to 5, characterized in that: The sound-absorbing plate is provided with a drainage hole.

7. The tail exhaust treatment device for a fuel cell forklift according to any one of claims 1 to 6, characterized in that: The water storage tank comprises a box body and an upper cover arranged on the box body, and a liquid level sensor, an air inlet and a water inlet are arranged on the upper cover.

8. A method for processing tail exhaust of a fuel cell forklift, characterized in that: The tail exhaust treatment device of a fuel cell forklift according to any one of claims 1 to 7 is adopted, and comprises: The water discharged from the fuel cell system enters the water storage chamber in the water storage tank, and the tail gas discharged from the fuel cell system enters the gas chamber in the water storage tank. The heat of the tail gas is transferred to the water in the water storage chamber to heat the water in the water storage chamber.

9. A fuel cell forklift, characterized in that: It comprises the tail exhaust processing device of a fuel cell forklift as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute the fuel cell forklift tail discharge processing method according to claim 8.

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