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CN-224204113-U - Tail-exhaust hydrogen elimination system of fuel cell for forklift and fuel cell engine

CN224204113UCN 224204113 UCN224204113 UCN 224204113UCN-224204113-U

Abstract

The utility model relates to the technical field of hydrogen fuel cells and discloses a tail hydrogen elimination system of a fuel cell for a forklift and a fuel cell engine, wherein the tail hydrogen elimination system of the fuel cell for the forklift comprises a tail hydrogen elimination device body, a tail gas exhaust device body and a tail gas exhaust device body, wherein the inner wall of the tail hydrogen elimination device body is enclosed to form a containing cavity, and the containing cavity is used for containing tail gas exhaust from the fuel cell engine; the device comprises a tail discharging and hydrogen eliminating device body, a discharging device connected with the tail discharging and hydrogen eliminating device body, a positioning device used for acquiring the real-time position of the forklift and/or judging whether the forklift is in a target space and generating a real-time position signal, and a control unit electrically connected and/or in communication with the positioning device and the discharging device and used for controlling the opening and closing of the discharging device based on the real-time position signal. The tail hydrogen removing system of the fuel cell for the forklift provided by the utility model avoids explosion risks caused by accumulation of hydrogen in the tail of the fuel cell engine in a closed space.

Inventors

  • WAN CHAOHUI
  • ZHAO JINGJING
  • LIU YANG

Assignees

  • 三一氢能科技有限公司

Dates

Publication Date
20260505
Application Date
20250427
Priority Date
20241015

Claims (11)

  1. 1. A fuel cell tail gas elimination system for a forklift truck, comprising: The tail exhaust hydrogen eliminating device comprises a tail exhaust hydrogen eliminating device body (10), wherein the inner wall of the tail exhaust hydrogen eliminating device body is enclosed to form a containing cavity (100), and the containing cavity (100) is used for containing tail exhaust gas from a fuel cell engine; A discharge device (20) connected with the tail-row hydrogen elimination device body (10), wherein the discharge device (20) is used for selectively communicating the accommodating cavity (100) with the outside; The positioning device (30) is used for acquiring the real-time position of the forklift and/or judging whether the forklift is in the target space or not and generating a real-time position signal; The control unit (40) is electrically and/or communicatively connected with the positioning device (30) and the discharging device (20), the control unit (40) is used for controlling the opening and closing of the discharging device (20) based on the real-time position signal, and the control unit (40) is used for controlling the opening and closing of the discharging device (20) if and only if the forklift is in a target space.
  2. 2. The tail gas elimination system for a forklift fuel cell according to claim 1, wherein the exhaust device (20) comprises a first valve (21) and a second valve (22), the first valve (21) and the second valve (22) are both connected with the tail gas elimination device body (10), the first valve (21) is used for selectively exhausting hydrogen in the accommodating cavity (100) to the outside, and the second valve (22) is used for selectively exhausting liquid in the accommodating cavity (100) to the outside.
  3. 3. The fuel cell tail stock hydrogen removal system for a forklift truck according to claim 2, further comprising a pressure sensor (51), the pressure sensor (51) being electrically and/or communicatively connected to the control unit (40), the pressure sensor (51) being adapted to monitor the pressure level within the receiving cavity (100); the tail hydrogen removing system of the fuel cell for the forklift further comprises an alarm device (60), wherein the alarm device (60) is electrically and/or communicatively connected with the control unit (40), and when the actual pressure value monitored by the pressure sensor (51) is greater than a set pressure threshold value, the control unit (40) controls the alarm device (60) to be started.
  4. 4. A fuel cell tail gas elimination system for a forklift truck according to claim 3, characterized in that said control unit (40) controls the opening of said first valve (21) and/or said second valve (22) if and only if the forklift truck is in the target space, when the actual pressure value monitored by said pressure sensor (51) is greater than a set pressure threshold.
  5. 5. A fuel cell tail stock hydrogen elimination system for a forklift as claimed in claim 3, further comprising a hydrogen concentration sensor (52), wherein the hydrogen concentration sensor (52) is electrically and/or communicatively connected to the control unit (40), and the hydrogen concentration sensor (52) is used for monitoring the hydrogen concentration in the accommodating cavity (100); When the actual hydrogen concentration value monitored by the hydrogen concentration sensor (52) is larger than a set hydrogen concentration threshold value, the control unit (40) controls the alarm device (60) to be started.
  6. 6. The fuel cell tail gas elimination system for a forklift truck according to claim 5, wherein when an actual hydrogen concentration value monitored by said hydrogen concentration sensor (52) is larger than a set hydrogen concentration threshold value, said control unit (40) controls said first valve (21) to be opened if and only if the forklift truck is in a target space.
  7. 7. The fuel cell tail stock hydrogen elimination system for a forklift truck according to claim 5, further comprising an air compressor (70), wherein the air compressor (70) is electrically and/or communicatively connected with the control unit (40), and an output end of the air compressor (70) is connected with the tail stock hydrogen elimination device body (10); The fuel cell tail gas elimination system for the forklift further comprises a third valve (71), wherein the third valve (71) is electrically and/or communicatively connected with the control unit (40), and the third valve (71) is used for selectively communicating the output end of the air compressor (70) with the accommodating cavity (100); the control unit (40) controls the third valve (71) to open when the actual hydrogen concentration value monitored by the hydrogen concentration sensor (52) is greater than a set hydrogen concentration threshold value.
  8. 8. A fuel cell tail stock hydrogen removal system for a forklift truck according to claim 3, further comprising a liquid level sensor (53), said liquid level sensor (53) being electrically and/or communicatively connected to said control unit (40), said liquid level sensor (53) being adapted to monitor the liquid level in said receiving cavity (100); When the actual liquid level value monitored by the liquid level sensor (53) is larger than a set liquid level threshold value, the control unit (40) controls the alarm device (60) to be started.
  9. 9. The fuel cell tail gas elimination system for forklifts according to claim 8, characterized in that said control unit (40) controls the opening of said second valve (22) if and only if the fork truck is in the target space, when the actual liquid level value monitored by said liquid level sensor (53) is greater than a set liquid level threshold.
  10. 10. The fuel cell tail stock hydrogen eliminating system for a forklift as claimed in any one of claims 1 to 9, wherein an inner wall of the tail stock hydrogen eliminating device body (10) is provided with a sound absorbing layer (11), and the sound absorbing layer (11) is made of a sound absorbing material.
  11. 11. A fuel cell engine comprising a fuel cell engine body and a fuel cell tail gas elimination system for a forklift truck according to any one of claims 1 to 10.

Description

Tail-exhaust hydrogen elimination system of fuel cell for forklift and fuel cell engine Technical Field The utility model relates to the technical field of hydrogen fuel cells, in particular to a tail hydrogen elimination system of a fuel cell for a forklift and a fuel cell engine. Background The hydrogen fuel cell is widely used in various vehicles due to its advantages of high energy conversion rate, rapid response, zero emission, etc. Fork trucks are used as industrial transportation vehicles for handling and short distance transportation of pallet goods. The fuel cell engine is applied to a forklift, so that the hydrogenation speed is high, the tail discharge is pollution-free, clean and environment-friendly. However, since the forklift usually works in a workshop and belongs to a closed space, tail exhaust gas of the fuel cell engine cannot be directly discharged into the atmosphere, otherwise, hydrogen accumulation may occur, and flammable and explosive risks exist. Disclosure of utility model In view of the above, the utility model provides a fuel cell tail gas elimination system for a forklift and a fuel cell engine, so as to solve the problem that hydrogen in the tail gas elimination system for the fuel cell engine of the forklift is easy to accumulate in a closed space to generate explosion risks. In a first aspect, the present utility model provides a fuel cell tail gas elimination system for a forklift, comprising: The tail exhaust hydrogen eliminating device comprises a tail exhaust hydrogen eliminating device body, wherein the inner wall of the tail exhaust hydrogen eliminating device body is enclosed to form a containing cavity, and the containing cavity is used for containing tail exhaust gas from a fuel cell engine; the discharging device is connected with the tail hydrogen removing device body and is used for selectively communicating the accommodating cavity with the outside; the positioning device is used for acquiring the real-time position of the forklift and/or judging whether the forklift is in the target space or not and generating a real-time position signal; And the control unit is electrically and/or communicatively connected with the positioning device and the discharging device and is used for controlling the opening and closing of the discharging device based on the real-time position signal, and the control unit is used for controlling the opening and closing of the discharging device if and only if the forklift is in the target space. The tail exhaust hydrogen elimination system for the forklift has the advantages that tail exhaust of the fuel cell engine is exhausted into the accommodating cavity of the tail exhaust hydrogen elimination device body when the forklift runs in a closed space in a normal working state, the pressure, the hydrogen concentration and the liquid level in the accommodating cavity are all below set threshold values, the discharging device is in a closed state, the tail exhaust hydrogen elimination device body does not exhaust hydrogen, when the forklift drives away from the closed space, and only when the positioning device detects that the forklift is in a target space, the control unit controls the discharging device to be opened based on the current real-time position signal of the forklift, so that the accommodating cavity is communicated with the outside, liquid water and gas in the accommodating cavity are discharged completely, the function of automatic discharging of the forklift in a set area is achieved, and explosion risks caused by accumulation of hydrogen in the tail of the fuel cell engine in the closed space are avoided. In an alternative embodiment, the discharging device comprises a first valve and a second valve, both of which are connected with the tail-discharging hydrogen-eliminating device body, the first valve is used for selectively discharging the hydrogen in the accommodating cavity to the outside, and the second valve is used for selectively discharging the liquid in the accommodating cavity to the outside. The control unit controls the first valve to be opened when and only when the positioning device detects that the forklift is in the target space, so that the hydrogen in the accommodating cavity is discharged to the outside, the safe and stable operation of the system is ensured, and the control unit controls the second valve to be opened, so that the liquid in the accommodating cavity is discharged to the outside, the performance of the fuel cell is maintained, and the service life of the system is prolonged. In an alternative embodiment, the tail gas hydrogen removing system of the fuel cell for the forklift further comprises a pressure sensor, wherein the pressure sensor is electrically and/or communicatively connected with the control unit and is used for monitoring the pressure in the accommodating cavity; The tail hydrogen eliminating system of the fuel cell for the forklift further comprises an alarm device which