A hydrogen discharge device for a hydrogen production system

Abstract

The present invention discloses a hydrogen discharge device for a hydrogen production system, which includes a hydrogen discharge pipe, a nitrogen gas cylinder, and a connector for connecting to the nitrogen gas cylinder. The nozzle of the hydrogen discharge pipe faces upward, and the lower end of the hydrogen discharge pipe is connected to the pipeline of the hydrogen production system. A hydrogen discharge valve is provided at the lower end of the hydrogen discharge pipe. The connector includes a main body, and the main body is provided with a connection port, a first output port, and a second output port. The first output port communicates with the atmosphere, the second output port is connected to the pipeline, and the connection port is connected to the nitrogen gas cylinder. The connector further includes a ventilation mechanism, which includes a first state and a second state. When the ventilation mechanism is in the first state, the connection port communicates with the first output port through the ventilation mechanism. When the ventilation mechanism is in the second state, the connection port communicates with the second output port through the ventilation mechanism. The present invention can prevent the air at the connection port from entering the pipeline, thereby preventing the oxidation gas from entering the hydrogen production system.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen discharge devices, and in particular to a hydrogen discharge device for a hydrogen production system. Background Art

[0002] In order to improve the utilization rate of electric energy, hydrogen energy is currently being vigorously developed for energy storage. Specifically, the hydrogen production system uses surplus electric energy to electrolyze alkaline water to produce hydrogen and store it. During peak electricity consumption periods, hydrogen fuel cells are used to convert the chemical energy of hydrogen into electrical energy for power supply.

[0003] The existing hydrogen production system needs to discharge the hydrogen in the hydrogen production system before commissioning, after shutdown, and before maintenance. The current hydrogen discharge device mainly uses a nitrogen cylinder to discharge hydrogen. When discharging hydrogen, the nitrogen cylinder is connected to the pipeline of the hydrogen production system and nitrogen is transported into the pipeline. It is often necessary to use several nitrogen cylinders for one hydrogen discharge, that is, each time a nitrogen cylinder is used up, it is necessary to remove the used nitrogen cylinder, reconnect a new nitrogen cylinder and release the nitrogen. The existing hydrogen discharge device is easily mixed with air when connected to the nitrogen cylinder, and the air contains oxidizing gas. The oxidizing gas entering the hydrogen production system will cause safety problems. Summary of the invention

[0004] In order to solve the shortcoming that the existing hydrogen exhaust device is easy to mix with oxidizing gas, the present invention provides a hydrogen exhaust device for a hydrogen production system, which can prevent air at the connection port from entering the pipeline, thereby preventing oxidizing gas from entering the hydrogen production system.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] A hydrogen discharge device for a hydrogen production system comprises a hydrogen discharge pipe, a nitrogen cylinder and a connector for connecting to the nitrogen cylinder, the pipe mouth of the hydrogen discharge pipe is upward, the lower end of the hydrogen discharge pipe is connected to the pipeline of the hydrogen production system, a hydrogen discharge valve is arranged at the lower end of the hydrogen discharge pipe, the connector comprises a main body, the main body is provided with a connection port, a first output port, and a second output port, the first output port is communicated with the atmosphere, the second output port is connected to the pipeline, and the connection port is connected to the nitrogen cylinder, the connector also comprises a ventilation mechanism, the ventilation mechanism comprises a first state and a second state, when the ventilation mechanism is in the first state, the connection port is communicated with the first output port through the ventilation mechanism, and when the ventilation mechanism is in the second state, the connection port is communicated with the second output port through the ventilation mechanism.

[0007] Through the above settings, air at the connection port can be prevented from entering the pipeline. Specifically, a switch valve is provided at the bottle mouth of the existing nitrogen cylinder. When hydrogen needs to be discharged, the bottle mouth and the connection port are threadedly connected. At this time, the switch valve is closed, and there is air in the connection port, the bottle mouth, the ventilation mechanism, and the first output port. There is oxidizing gas in the air. The connection port is communicated with the first output port through the ventilation mechanism. After the switch valve is opened, the nitrogen cylinder outputs nitrogen, and the nitrogen is discharged to the atmosphere through the bottle mouth, the connection port, the ventilation mechanism, and the first output port. In this process, the nitrogen discharges the air in the bottle mouth, the connection port, the ventilation mechanism, and the first output port, thereby preventing oxidizing gas from being brought into the hydrogen production system during subsequent hydrogen discharge. Then the ventilation mechanism switches to the second state, and the nitrogen output by the nitrogen cylinder passes through the bottle mouth, the connection port, the ventilation mechanism, the second output port, the pipeline, and the hydrogen discharge pipe and is discharged to the atmosphere. In this process, nitrogen enters the hydrogen production system from the pipeline and mixes with the hydrogen in the hydrogen production system. On the one hand, nitrogen dilutes the hydrogen in the hydrogen production system, and on the other hand, it is discharged to the atmosphere together with hydrogen, thereby reducing the amount of hydrogen in the hydrogen production system. Since there is a relatively large amount of hydrogen in the hydrogen production system, in reality, multiple nitrogen cylinders are often required to basically discharge the hydrogen in the hydrogen production system. When the nitrogen pressure in the nitrogen cylinder is relatively small, the ventilation mechanism returns to the first state, and the nitrogen in the nitrogen cylinder is output from the first output port again. At this time, the sound of the nitrogen gas flow reminds the personnel that the nitrogen reserve is running low and a nitrogen cylinder needs to be replaced. When replacing, the switch valve of the nitrogen cylinder is closed, then the bottle mouth and the connection port are disconnected, and then the bottle mouth of the new nitrogen cylinder and the connection port are threadedly connected, and then the above steps are repeated to gradually discharge the hydrogen in the hydrogen production system.

[0008] Further, the hydrogen production system includes a hydrogen production tank and a hydrogen storage tank. The pipeline includes a first connecting pipe for connecting the hydrogen storage tank and the hydrogen production tank. A first control valve and a compression pump are provided on the first connecting pipe. The compression pump is located between the first control valve and the hydrogen storage tank. One end of the hydrogen storage tank away from the first connecting pipe is connected with a second connecting pipe, and a second control valve is provided on the second connecting pipe.

[0009] Through the above settings, when the hydrogen production system produces hydrogen, the first control valve is opened and the second control valve is closed. The hydrogen production tank generates hydrogen by electrolyzing alkaline water, and the hydrogen enters the hydrogen storage tank through the first connecting pipe and the compression pump. The compression pump compresses the hydrogen and increases the pressure of the hydrogen. When the hydrogen in the hydrogen storage tank needs to be used, the second control valve is opened, and the hydrogen in the hydrogen storage tank comes out through the second connecting pipe for use.

[0010] Further, the number of hydrogen discharge pipes is two. One hydrogen discharge pipe is provided between the second control valve and the hydrogen storage tank, and the other hydrogen discharge pipe is provided between the compression pump and the first control valve. The second output port is connected with the first connecting pipe through a third connecting pipe. The third connecting pipe is provided between the compression pump and the hydrogen storage tank, and a third control valve is provided on the third connecting pipe.

[0011] With the above settings, when the hydrogen production system produces hydrogen, the hydrogen discharge valve and the third control valve are closed to prevent hydrogen leakage. When discharging hydrogen, the first control valve and the second control valve are closed, a nitrogen cylinder is connected to the connection port, and then the hydrogen discharge valve is opened. At this time, the hydrogen pressure in the hydrogen production system is relatively high, and the hydrogen passes through the hydrogen discharge valve and the hydrogen discharge pipe and is discharged upward. In order to prevent air from entering the hydrogen production system through the hydrogen discharge pipe, a check valve is provided on the hydrogen discharge pipe. The hydrogen production system is equipped with a pressure sensor and can use the built-in pressure sensor to detect the hydrogen pressure in real time. When the hydrogen pressure decreases to two atmospheres, the switch valve of the nitrogen cylinder is opened. After the switch valve is opened, the nitrogen cylinder outputs nitrogen, and the nitrogen passes through the bottle mouth, the connection port, the ventilation mechanism, and the first output port and is discharged to the atmosphere. During this process, the nitrogen discharges the air in the bottle mouth, the connection port, the ventilation mechanism, and the first output port, and then the ventilation mechanism switches to the second state. The nitrogen output by the nitrogen cylinder passes through the bottle mouth, the connection port, the ventilation mechanism, the second output port, the pipeline, and the hydrogen discharge pipe and is discharged to the atmosphere. Among them, a part of the nitrogen passes through the hydrogen storage tank and is discharged from the hydrogen discharge pipe, thereby helping to discharge the hydrogen in the hydrogen storage tank. During this process, the nitrogen enters the hydrogen production system from the pipeline and mixes with the hydrogen in the hydrogen production system. On the one hand, the nitrogen dilutes the hydrogen in the hydrogen production system, and on the other hand, it is discharged to the atmosphere together with the hydrogen, thereby reducing the amount of hydrogen in the hydrogen production system. Since there is a relatively large amount of hydrogen in the hydrogen production system, in reality, multiple nitrogen cylinders are often required to basically discharge the hydrogen in the hydrogen production system. When the nitrogen pressure in the nitrogen cylinder is relatively low, the ventilation mechanism returns to the first state, and the nitrogen in the nitrogen cylinder is output from the first output port again. At this time, the sound of the nitrogen gas flow reminds the personnel that there is not much nitrogen left and a nitrogen cylinder needs to be replaced. When replacing, the switch valve of the nitrogen cylinder is closed, then the bottle mouth and the connection port are disconnected, and then the bottle mouth of the new nitrogen cylinder and the connection port are threadedly connected, and then the above steps are repeated to gradually discharge the hydrogen in the hydrogen production system.

[0012] Further, a rotating groove is provided in the main body. The first output port, the second output port, and the connection port are evenly arranged along the circumference of the rotating groove and are all communicated with the rotating groove. The ventilation mechanism includes a valve core rotatably connected in the rotating groove. The valve core is provided with an air passage. The ventilation mechanism further includes a rotating device for driving the valve core to rotate. When the ventilation mechanism is in the first state, the connection port is communicated with the first output port through the air passage. When the ventilation mechanism is in the second state, the connection port is communicated with the second output port through the air passage.

[0013] Through the above arrangement, the switching of the ventilation mechanism state can be achieved. Specifically, when the ventilation mechanism needs to switch from the first state to the second state, the valve core rotates one hundred and twenty degrees under the action of the rotating device. At this time, the connecting port is connected to the second output port through the air channel, that is, the ventilation mechanism is in the second state at this time, and nitrogen is discharged to the atmosphere through the connecting port, the air channel, and the first output port, thereby emptying the air in the connecting port, the air channel and the first output port. When the ventilation mechanism needs to switch back to the first state, the rotating device rotates the valve core one hundred and twenty degrees in the opposite direction. At this time, the connecting port is connected to the first output port through the air channel. At this time, nitrogen passes through the bottle mouth, the connecting port, the air channel, and further, a first receiving groove is provided on one side of the first output port, and a back groove is provided on the back side of the main body. The rotating device includes a first wind wheel rotatably connected to the first receiving groove, the first wind wheel is at least partially arranged in the first output port, the first wind wheel is fixedly connected to the first rotating shaft, the first rotating shaft is rotatably connected to the main body and is at least partially arranged in the back groove, the bottom of the back groove is rotatably connected to the first driving gear, the first driving gear is fixedly connected to the first rotating shaft, and the valve core A rotating body coaxial with the valve core is fixedly connected, and the rotating body is at least partially arranged in the back groove. A ring gear is set on the rotating body, and the ring gear and the rotating body are rotatably connected. The ring gear and the first driving gear are transmitted through the first transmission gear. A first limiting groove is set on one side of the rotating body, one end of the first limiting groove is set on the lower side of the rotating body, and the other end of the first limiting groove is set on the side of the rotating body close to the first driving gear. A first protrusion is fixedly connected to the inner side of the ring gear, and the first protrusion is slidably connected in the first limiting groove and abuts with one end of the first limiting groove close to the first driving gear. The rotating body is provided with a second limiting groove, and a second protrusion is set in the second limiting groove. The second protrusion is fixedly connected to the bottom of the back groove, and the second protrusion abuts with one end of the second limiting groove away from the first driving gear. A first connecting column is fixedly connected to the side of the ring gear away from the main body, and the first connecting column is set on the side of the ring gear close to the first driving gear. A second connecting column is set above the ring gear, and the second connecting column is fixedly connected to the bottom of the back groove, and the first connecting column and the second connecting column are connected by an elastic member.

[0014] Through the above arrangement, the rotating device can drive the valve core to rotate under the action of the nitrogen gas flow and make the ventilation mechanism enter the second state. Specifically, when hydrogen needs to be discharged, the nitrogen bottle and the connecting port are threadedly connected. At this time, the elastic member is in an open state, that is, the elastic member applies a basically upward pulling force to the first connecting column, the first protrusion is pressed against one end of the first limiting groove, and the second protrusion is pressed against one end of the second limiting groove. When the switch valve of the nitrogen bottle is opened, the nitrogen bottle outputs nitrogen, and the nitrogen is discharged to the atmosphere through the bottle mouth, the connecting port, the airway and the first output port. The nitrogen empties the air in the bottle mouth, the connecting port, the airway and the first output port. In this process, the nitrogen drives the first wind wheel to rotate after passing through the first output port, and the first wind wheel drives the first rotating shaft and the first driving gear to rotate. The first driving gear drives the ring gear and the first connecting column to rotate clockwise, and the elastic member stretches. When the ring gear and the rotating body are rotationally connected, under the action of the friction between the rotating body and the main body, the ring gear will not drive the rotating body to rotate, that is, the nitrogen is still discharged from the first output port. Output, use this time to empty the air in the bottle mouth, the connecting port, the air duct and the first output port, the first protrusion rotates along the first limiting groove toward the lower side of the rotating body, when the first protrusion moves to the end of the first limiting groove away from the first driving gear, the first protrusion will push the end of the first limiting groove to rotate toward the side away from the first driving gear, thereby driving the rotating body and the valve core to rotate, during the rotation of the valve core, the air duct and the connecting port are gradually staggered, the air duct and the first output port are gradually staggered, that is, the air flow velocity of the nitrogen gradually decreases, the rotation speed of the first wind wheel gradually decreases, and the driving force of the first wind wheel on the first driving gear gradually decreases, but because the first connecting column has passed directly under the rotating body at this time, under the action of the tension of the elastic member, the tension drives the annular gear and the rotating body to continue to rotate until the second protrusion and the other end of the second limiting groove abut, at this time, the connecting port is connected through the air duct and the second output port, at this time, the ventilation mechanism is initially in the second state, nitrogen is output from the second output port and begins to discharge the hydrogen in the hydrogen production system.

[0015] Further, a second receiving groove is provided on one side of the second outlet. The rotating device further includes a second wind wheel rotatably connected in the second receiving groove. The second wind wheel is fixedly connected with a second rotating shaft. A second driving gear is rotatably connected to the bottom of the back groove. The second rotating shaft is rotatably connected to the main body and passes through the second driving gear. The second driving gear is rotatably connected to the second rotating shaft. A damping oil is provided between the second rotating shaft and the second driving gear. A second transmission gear is rotatably connected to the bottom of the back groove. The second transmission gear meshes on the side of the second driving gear close to the rotating body. The main body is slidably connected with a first rack extending vertically. The first rack meshes on the side of the second transmission gear close to the rotating body. The upper end of the first rack is connected to the main body through a first spring. A clamping device is provided below the first rack of the main body. A second rack is fixedly connected to the side of the first rack close to the rotating body. A third transmission gear is rotatably connected to the bottom of the back groove. A fourth transmission gear is provided on the side of the third transmission gear away from the main body. The third transmission gear and the fourth transmission gear are connected through a one-way bearing. The third transmission gear and the fourth transmission gear are coaxial. The third transmission gear abuts against the side of the annular gear close to the second driving gear. The fourth transmission gear is provided between the second rack and the annular gear and is used to mesh with the second rack. The second rack and the fourth transmission gear are disengaged and located above the fourth transmission gear.

[0016] Through the above settings, when the pressure in the nitrogen cylinder drops to a certain level, the ventilation mechanism automatically switches back to the first state and uses the airflow sound to remind the personnel to replace the nitrogen cylinder. Specifically, during the process of the ventilation mechanism switching from the first state to the second state, the annular gear rotates. During the rotation of the annular gear, the annular gear drives the third transmission gear to rotate, and the second rack and the fourth transmission gear are disengaged, so the first rack and the second rack do not move.

[0017] When the ventilation mechanism is in the second state, nitrogen passes through one side of the second wind wheel and drives the second wind wheel to rotate, and the second wind wheel drives the second rotating shaft to rotate. Since there is damping oil between the second rotating shaft and the second driving gear, under the action of damping, the second driving gear rotates and drives the first rack and the second rack to move downward through the second transmission gear, the first spring is stretched, and when the lower end of the first rack moves to the clamping device, the clamping device is connected to the first rack to prevent the first rack and the second rack from moving upward, and when the lower end of the second rack moves to the fourth transmission gear, the second rack and the fourth transmission gear mesh and drive the fourth The transmission gear rotates. Since there is a one-way bearing between the third transmission gear and the fourth transmission gear, under the action of the one-way bearing, the rotation of the fourth transmission gear will not drive the rotation of the third transmission gear, that is, the annular gear will not rotate, that is, the ventilation mechanism will remain in the second state, and nitrogen will continue to discharge hydrogen from the hydrogen production system. When the clamping device is connected to the first rack, the first rack cannot continue to move downward, that is, the second drive gear cannot continue to rotate. At this time, although the nitrogen can continue to drive the second shaft and the second wind wheel to rotate, the second shaft and the second drive gear rotate relatively, and the second drive gear no longer rotates. As the nitrogen in the nitrogen bottle decreases, the pressure in the nitrogen bottle decreases. When the pressure decreases to a certain level, the nitrogen output speed is slow, the hydrogen discharge efficiency is reduced, the clamping device and the first rack are disengaged, and under the action of the first spring, the first rack and the second rack move upward, and the second rack drives the fourth transmission gear to rotate in the opposite direction. At this time, the fourth transmission gear drives the third transmission gear to rotate through the one-way bearing, and the third transmission gear drives the ring gear and the first connecting column to rotate counterclockwise around the axis of the rotating body. The elastic member stretches, and the first protrusion moves downward along the first limiting groove. At this time, the ring gear and the rotating body rotate relatively, the rotating body does not rotate, and the nitrogen is still output from the second output port. As the second rack moves upward, the annular gear continues to rotate counterclockwise. When the first protrusion moves to the lower end of the first limiting groove, the first protrusion drives the rotating body to rotate counterclockwise, and the rotating body drives the valve core to rotate. The airway and the connecting port slowly staggered, and the airway and the second output port slowly staggered. When the second rack and the fourth transmission gear disengage, the first connecting column has passed directly under the rotating body. Under the action of the pulling force of the elastic member, the elastic member continues to drive the annular gear and the rotating body to rotate counterclockwise until the second protrusion moves to the end of the second limiting groove. At this time, the airway reconnects the connecting port and the first output port, that is, the ventilation mechanism returns to the first state, and nitrogen begins to be output from the first output port.

[0018] Further, the clamping device includes a cylinder body fixedly connected to the main body, a piston slidably connected in the cylinder body, and a piston rod fixedly connected to the piston. A side groove is provided on one side of the connection port, and an oil plug is slidably connected in the side groove. The side groove is connected to the cylinder body through a pipe. One side of the oil plug away from the connection port is connected to the bottom of the side groove through a third spring. Oil is provided in the side groove, the pipe, and the cylinder body. One end of the cylinder body close to the pipe is connected to the piston through a second spring. The piston rod is provided at one end of the piston away from the second spring. A slot for cooperating with the piston rod is provided on one side of the lower end of the first rack, and an inclined surface for facilitating the insertion of the piston rod into the slot is provided at the lower end of the piston rod.

[0019] With the above arrangement, when the pressure in the nitrogen cylinder decreases to a certain extent, the ventilation mechanism automatically starts to switch states. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the embodiment.

[0021] Figure 2 Schematic diagram of the connection between the connector and the nitrogen cylinder.

[0022] Figure 3 For Figure 2 back view.

[0023] Figure 4 For Figure 3 partial enlarged view.

[0024] Figure 5 For Figure 4 enlarged view at A of

[0025] Figure 6 For Figure 4 enlarged view at B of

[0026] Figure 7 Schematic diagram of the ventilation mechanism in the first state.

[0027] Figure 8 Schematic diagram of the first driving gear driving the annular gear to rotate through the first transmission gear.

[0028] Figure 9 Schematic diagram of the annular gear rotating under the action of the elastic member.

[0029] Figure 10 Schematic diagram of the ventilation mechanism in the second state.

[0030] Figure 11 Schematic diagram when the hydrogen discharge pipe discharges hydrogen.

[0031] Figure 12Schematic diagram of the connection between the first rack and the clamping device.

[0032] Figure 13 It is Figure 12 Enlarged view at position C of

[0033] Figure 14 Schematic diagram of the upward movement of the first rack and the second rack to drive the annular gear to rotate. Specific implementation mode

[0034] Next, through embodiments and in conjunction with the drawings, the technical solutions of the present invention will be further specifically described.

[0035] Refer to Figures 1 to 14 , a hydrogen discharge device for a hydrogen production system, including a hydrogen discharge pipe 11, a nitrogen cylinder 12, and a connector 13 for connecting to the nitrogen cylinder 12. The nozzle of the hydrogen discharge pipe 11 faces upward. The lower end of the hydrogen discharge pipe 11 is connected to the pipeline of the hydrogen production system. A hydrogen discharge valve 111 is provided at the lower end of the hydrogen discharge pipe 11. The connector 13 includes a main body 131. The main body 131 is provided with a connection port 1311, a first output port 1312, and a second output port 1313. The first output port 1312 communicates with the atmosphere. The second output port 1313 is connected to the pipeline. The connection port 1311 is connected to the nitrogen cylinder 12. The connector 13 further includes a ventilation mechanism 132. The ventilation mechanism 132 includes a first state and a second state. When the ventilation mechanism 132 is in the first state, the connection port 1311 communicates with the first output port 1312 through the ventilation mechanism 132. When the ventilation mechanism 132 is in the second state, the connection port 1311 communicates with the second output port 1313 through the ventilation mechanism 132.

[0036] Through the above settings, air at the connection port 1311 can be prevented from entering the pipeline. Specifically, there is a switch valve at the bottle mouth of the existing nitrogen cylinder 12. When hydrogen needs to be discharged, the bottle mouth is threadedly connected to the connection port 1311. At this time, the switch valve is closed. There is air in the connection port 1311, the bottle mouth, the ventilation mechanism 132, and the first output port 1312. There are oxidation gases in the air. The connection port 1311 communicates with the first output port 1312 through the ventilation mechanism 132. After the switch valve is opened, the nitrogen cylinder 12 outputs nitrogen, and the nitrogen is discharged to the atmosphere through the bottle mouth, the connection port 1311, the ventilation mechanism 132, and the first output port 1312. During this process, the nitrogen discharges the air in the bottle mouth, the connection port 1311, the ventilation mechanism 132, and the first output port 1312, thereby preventing oxidation gases from being brought into the hydrogen production system during subsequent hydrogen discharge. Refer to Figure 7, then the ventilation mechanism 132 switches to the second state. The nitrogen gas output from the nitrogen cylinder 12 passes through the bottle mouth, the connection port 1311, the ventilation mechanism 132, the second output port 1313, the pipeline, and the hydrogen discharge pipe 11 and is discharged to the atmosphere. During this process, nitrogen gas enters the hydrogen production system from the pipeline and mixes with the hydrogen gas in the hydrogen production system. On the one hand, nitrogen gas dilutes the hydrogen gas in the hydrogen production system, and on the other hand, it is discharged to the atmosphere together with the hydrogen gas, thereby reducing the amount of hydrogen gas in the hydrogen production system. Since there is a relatively large amount of hydrogen gas in the hydrogen production system, in reality, multiple nitrogen cylinders 12 are often required to basically discharge all the hydrogen gas in the hydrogen production system. When the nitrogen gas pressure in the nitrogen cylinder 12 is relatively small, the ventilation mechanism 132 returns to the first state, and the nitrogen gas in the nitrogen cylinder 12 is output from the first output port 1312 again. At this time, the sound of the nitrogen gas flow reminds the personnel that the nitrogen gas reserve is running low and the nitrogen cylinder 12 needs to be replaced. When replacing, close the switching valve of the nitrogen cylinder 12, then disconnect the bottle mouth and the connection port 1311, then thread-connect the bottle mouth of the new nitrogen cylinder 12 and the connection port 1311, and then repeat the above steps to gradually discharge all the hydrogen gas in the hydrogen production system.

[0037] As an implementation method, the hydrogen production system includes a hydrogen production tank 21 and a hydrogen storage tank 22. The pipeline includes a first connecting pipe 23 for connecting the hydrogen storage tank 22 and the hydrogen production tank 21. A first control valve 231 and a compression pump 232 are provided on the first connecting pipe 23. The compression pump 232 is located between the first control valve 231 and the hydrogen storage tank 22. One end of the hydrogen storage tank 22 away from the first connecting pipe 23 is connected with a second connecting pipe 24, and a second control valve 241 is provided on the second connecting pipe 24.

[0038] With the above settings, when the hydrogen production system produces hydrogen, the first control valve 231 is opened and the second control valve 241 is closed. The hydrogen production tank 21 generates hydrogen by electrolyzing alkaline water. The hydrogen gas passes through the first connecting pipe 23 and the compression pump 232 and enters the hydrogen storage tank 22. The compression pump 232 compresses the hydrogen gas and increases the pressure of the hydrogen gas. When the hydrogen gas in the hydrogen storage tank 22 needs to be used, the second control valve 241 is opened, and the hydrogen gas in the hydrogen storage tank 22 comes out from the second connecting pipe 24 for use.

[0039] As an implementation method, the number of hydrogen discharge pipes 11 is two. One hydrogen discharge pipe 11 is provided between the second control valve 241 and the hydrogen storage tank 22, and the other hydrogen discharge pipe 11 is provided between the compression pump 232 and the first control valve 231. The second output port 1313 is connected with the first connecting pipe 23 through a third connecting pipe 25. The third connecting pipe 25 is provided between the compression pump 232 and the hydrogen storage tank 22, and a third control valve 251 is provided on the third connecting pipe 25.

[0040] With the above settings, when the hydrogen production system produces hydrogen, the hydrogen discharge valve 111 and the third control valve 251 are closed to prevent hydrogen leakage. When discharging hydrogen, the first control valve 231 and the second control valve 241 are closed. A nitrogen cylinder 12 is connected to the connection port 1311, and then the hydrogen discharge valve 111 is opened. At this time, the hydrogen pressure in the hydrogen production system is relatively high, and the hydrogen is discharged upward through the hydrogen discharge valve 111 and the hydrogen discharge pipe 11. To prevent air from entering the hydrogen production system through the hydrogen discharge pipe 11, a check valve is provided on the hydrogen discharge pipe 11. The hydrogen production system is equipped with a pressure sensor, which can use the built-in pressure sensor to detect the hydrogen pressure in real time. When the hydrogen pressure decreases to two atmospheres, the switch valve of the nitrogen cylinder 12 is opened. After the switch valve is opened, the nitrogen cylinder 12 outputs nitrogen, and the nitrogen is discharged to the atmosphere through the bottle mouth, the connection port 1311, the ventilation mechanism 132, and the first output port 1312. During this process, the nitrogen discharges the air in the bottle mouth, the connection port 1311, the ventilation mechanism 132, and the first output port 1312. See Figure 7 , and then the ventilation mechanism 132 switches to the second state. The nitrogen output from the nitrogen cylinder 12 is discharged to the atmosphere through the bottle mouth, the connection port 1311, the ventilation mechanism 132, the second output port 1313, the pipeline, and the hydrogen discharge pipe 11. Among them, a part of the nitrogen passes through the hydrogen storage tank 22 and is discharged from the hydrogen discharge pipe 11, thereby helping to discharge the hydrogen in the hydrogen storage tank 22. During this process, the nitrogen enters the hydrogen production system from the pipeline and mixes with the hydrogen in the hydrogen production system. On the one hand, the nitrogen dilutes the hydrogen in the hydrogen production system, and on the other hand, it is discharged to the atmosphere together with the hydrogen, thereby reducing the amount of hydrogen in the hydrogen production system. Since there is a relatively large amount of hydrogen in the hydrogen production system, in reality, multiple nitrogen cylinders 12 are often required to basically discharge the hydrogen in the hydrogen production system. When the nitrogen pressure in the nitrogen cylinder 12 is relatively low, the ventilation mechanism 132 returns to the first state, and the nitrogen in the nitrogen cylinder 12 is output from the first output port 1312 again. At this time, the sound of the nitrogen gas flow reminds the personnel that there is not much nitrogen left and the nitrogen cylinder 12 needs to be replaced. When replacing, the switch valve of the nitrogen cylinder 12 is closed, then the bottle mouth and the connection port 1311 are disconnected, and then the bottle mouth of the new nitrogen cylinder 12 is threadedly connected to the connection port 1311, and then the above steps are repeated to gradually discharge the hydrogen in the hydrogen production system.

[0041] As an implementation, a rotating groove 1314 is provided in the main body 131. The first output port 1312, the second output port 1313, and the connection port 1311 are evenly arranged along the circumferential direction of the rotating groove 1314 and are all communicated with the rotating groove 1314. The ventilation mechanism 132 includes a valve core 1321 rotatably connected in the rotating groove 1314. The valve core 1321 is provided with an air passage 13211. The ventilation mechanism 132 further includes a rotating device 1322 for driving the valve core 1321 to rotate. When the ventilation mechanism 132 is in the first state, the connection port 1311 is communicated with the first output port 1312 through the air passage 13211. When the ventilation mechanism 132 is in the second state, the connection port 1311 is communicated with the second output port 1313 through the air passage 13211.

[0042] Through the above settings, the switching of the state of the ventilation mechanism 132 can be realized. Specifically, when the ventilation mechanism 132 needs to be switched from the first state to the second state, the valve core 1321 rotates 120 degrees under the action of the rotating device 1322. At this time, the connection port 1311 is communicated with the second output port 1313 through the air passage 13211, that is, the ventilation mechanism 132 is in the second state at this time. Nitrogen is discharged to the atmosphere through the connection port 1311, the air passage 13211, and the first output port 1312, so as to empty the air in the connection port 1311, the air passage 13211, and the first output port 1312. See Figure 10 And when the ventilation mechanism 132 needs to be switched back to the first state, the rotating device 1322 rotates the valve core 1321 120 degrees in the reverse direction. At this time, the connection port 1311 is communicated with the first output port 1312 through the air passage 13211. See Figure 2, at this time, nitrogen passes through the bottle mouth, the connection port 1311, and the air passage 13211. As an implementation method, a first receiving groove 13121 is provided on one side of the first output port 1312, and a back groove 1315 is provided on the back surface of the main body 131. The rotating device 1322 includes a first wind wheel 13221 rotatably connected in the first receiving groove 13121. The first wind wheel 13221 is at least partially disposed in the first output port 1312. The first wind wheel 13221 is fixedly connected to a first rotating shaft 13222. The first rotating shaft 13222 is rotatably connected to the main body 131 and at least partially disposed in the back groove 1315. A first driving gear 13151 is rotatably connected to the bottom of the back groove 1315. The first driving gear 13151 is fixedly connected to the first rotating shaft 13222. The valve core 1321 is fixedly connected to a rotating body 13212 coaxial with the valve core 1321. The rotating body 13212 is at least partially disposed in the back groove 1315. An annular gear 13213 is sleeved on the rotating body 13212. The annular gear 13213 is rotatably connected to the rotating body 13212. The annular gear 13213 and the first driving gear 13151 are driven by a first transmission gear 13223. A first limiting groove 13214 is provided on one side of the rotating body 13212. One end of the first limiting groove 13214 is disposed on the lower side of the rotating body 13212, and the other end of the first limiting groove 13214 is disposed on the side of the rotating body 13212 close to the first driving gear 13151. A first protrusion 13215 is fixedly connected to the inner side of the annular gear 13213. The first protrusion 13215 is slidably connected in the first limiting groove 13214 and abuts against one end of the first limiting groove 13214 close to the first driving gear 13151. The rotating body 13212 is provided with a second limiting groove 13216. A second protrusion 13217 is disposed in the second limiting groove 13216. The second protrusion 13217 is fixedly connected to the bottom of the back groove 1315. The second protrusion 13217 abuts against one end of the second limiting groove 13216 away from the first driving gear 13151. A first connecting column 13218 is fixedly connected to the side of the annular gear 13213 away from the main body 131. The first connecting column 13218 is disposed on the side of the annular gear 13213 close to the first driving gear 13151. A second connecting column 13152 is disposed above the annular gear 13213. The second connecting column 13152 is fixedly connected to the bottom of the back groove 1315. The first connecting column 13218 and the second connecting column 13152 are connected by an elastic member 13219.

[0043] With the above settings, the rotating device 1322 can drive the valve core 1321 to rotate under the action of the nitrogen gas flow, causing the ventilation mechanism 132 to enter the second state. Specifically, when hydrogen needs to be discharged, the nitrogen gas cylinder 12 is threadedly connected to the connection port 1311. At this time, the elastic member 13219 is in an open state, that is, the elastic member 13219 exerts a basically upward pulling force on the first connecting column 13218. The first protrusion 13215 presses against one end of the first limiting groove 13214, and the second protrusion 13217 presses against one end of the second limiting groove 13216. See Figure 4 and Figure 5 , when the switch valve of the nitrogen gas cylinder 12 is opened, the nitrogen gas cylinder 12 outputs nitrogen gas. The nitrogen gas passes through the bottle mouth, the connection port 1311, the air passage 13211, and the first output port 1312 and is discharged to the atmosphere. The nitrogen gas evacuates the air in the bottle mouth, the connection port 1311, the air passage 13211, and the first output port 1312. During this process, after passing through the first output port 1312, the nitrogen gas drives the first wind wheel 13221 to rotate. See Figure 7 , the first wind wheel 13221 drives the first rotating shaft 13222 and the first driving gear 13151 to rotate. The first driving gear 13151 drives the annular gear 13213 and the first connecting column 13218 to rotate clockwise. The elastic member 13219 elongates. See Figure 8 , when the annular gear 13213 is rotatably connected to the rotating body 13212, under the action of the frictional force between the rotating body 13212 and the main body 131, the annular gear 13213 will not drive the rotating body 13212 to rotate, that is, the nitrogen gas still outputs from the first output port 1312. During this period, the air in the bottle mouth, the connection port 1311, the air passage 13211, and the first output port 1312 is evacuated. The first protrusion 13215 rotates downward along the first limiting groove 13214 towards the lower side of the rotating body 13212. When the first protrusion 13215 moves to the end of the first limiting groove 13214 away from the first driving gear 13151, the first protrusion 13215 will push the end of the first limiting groove 13214 to rotate away from the first driving gear 13151, thereby driving the rotating body 13212 and the valve core 1321 to rotate. During the rotation of the valve core 1321, the air passage 13211 and the connection port 1311 are gradually staggered, and the air passage 13211 and the first output port 1312 are gradually staggered, that is, the flow rate of the nitrogen gas gradually decreases, the rotation speed of the first wind wheel 13221 gradually decreases, and the driving force of the first wind wheel 13221 on the first driving gear 13151 gradually decreases. However, since the first connecting column 13218 has passed directly below the rotating body 13212 at this time, under the action of the pulling force of the elastic member 13219, the pulling force drives the annular gear 13213 and the rotating body 13212 to continue rotating until the second protrusion 13217 abuts against the other end of the second limiting groove 13216. See Figure 9, at this time, the connection port 1311 is communicated with the second output port 1313 through the air duct 13211, see Figure 10 , at this time, the ventilation mechanism 132 is in the initial second state, and nitrogen is output from the second output port 1313 and starts to exclude the hydrogen in the hydrogen production system.

[0044] As an implementation method, a second receiving groove 13131 is arranged on one side of the second output port 1313. The rotating device 1322 further includes a second wind wheel 13132 rotatably connected in the second receiving groove 13131. The second wind wheel 13132 is fixedly connected with a second rotating shaft 13133. A second driving gear 13153 is rotatably connected to the bottom of the back groove 1315. The second rotating shaft 13133 is rotatably connected to the main body 131 and passes through the second driving gear 13153. The second driving gear 13153 is rotatably connected to the second rotating shaft 13133. A damping oil is arranged between the second rotating shaft 13133 and the second driving gear 13153. A second transmission gear 13154 is rotatably connected to the bottom of the back groove 1315. The second transmission gear 13154 meshes on the side of the second driving gear 13153 close to the rotating body 13212. The main body 131 is slidably connected with a first rack 1316 extending vertically. The first rack 1316 meshes on the side of the second transmission gear 13154 close to the rotating body 13212. The upper end of the first rack 1316 is connected to the main body 131 through a first spring 13161. A clamping device 1317 is arranged below the first rack 1316 on the main body 131. A second rack 13162 is fixedly connected to the side of the first rack 1316 close to the rotating body 13212. A third transmission gear 13155 is rotatably connected to the bottom of the back groove 1315. A fourth transmission gear 13156 is arranged on the side of the third transmission gear 13155 away from the main body 131. The third transmission gear 13155 and the fourth transmission gear 13156 are connected through a one-way bearing 13157. The third transmission gear 13155 and the fourth transmission gear 13156 are coaxial. The third transmission gear 13155 abuts against the side of the annular gear 13213 close to the second driving gear 13153. The fourth transmission gear 13156 is arranged between the second rack 13162 and the annular gear 13213 and is used to mesh with the second rack 13162. The second rack 13162 is disengaged from the fourth transmission gear 13156 and is located above the fourth transmission gear 13156.

[0045] Through the above settings, when the pressure in the nitrogen cylinder 12 drops to a certain level, the ventilation mechanism 132 automatically switches back to the first state and uses the airflow sound to remind the personnel to replace the nitrogen cylinder 12. Specifically, during the process of the ventilation mechanism 132 switching from the first state to the second state, the annular gear 13213 rotates, see Figure 4, during the rotation of the ring gear 13213, the ring gear 13213 drives the third transmission gear 13155 to rotate, and the second rack 13162 and the fourth transmission gear 13156 are disengaged, so the first rack 1316 and the second rack 13162 will not move.

[0046] When the ventilation mechanism 132 is in the second state, nitrogen gas passes through one side of the second wind wheel 13132 and drives the second wind wheel 13132 to rotate. The second wind wheel 13132 drives the second rotating shaft 13133 to rotate. Since there is damping oil between the second rotating shaft 13133 and the second driving gear 13153, under the action of the damping, the second driving gear 13153 rotates and drives the first rack 1316 and the second rack 13162 to move downward through the second transmission gear 13154. The first spring 13161 is stretched. When the lower end of the first rack 1316 moves to the clamping device 1317, the clamping device 1317 is connected to the first rack 1316 to prevent the first rack 1316 and the second rack 13162 from moving upward. When the lower end of the second rack 13162 moves to the fourth transmission gear 13156, the second rack 13162 meshes with the fourth transmission gear 13156 and drives the fourth transmission gear 13156 to rotate. Since there is a one-way bearing 13157 between the third transmission gear 13155 and the fourth transmission gear 13156, under the action of the one-way bearing 13157, the rotation of the fourth transmission gear 13156 will not drive the rotation of the third transmission gear 13155, that is, the ring gear 13213 will not rotate, that is, the ventilation mechanism 132 will remain in the second state, and nitrogen gas will continuously exhaust hydrogen from the hydrogen production system. After the clamping device 1317 is connected to the first rack 1316, the first rack 1316 cannot continue to move downward, that is, the second driving gear 13153 cannot continue to rotate. At this time, although nitrogen gas can continue to drive the second rotating shaft 13133 and the second wind wheel 13132 to rotate, the second rotating shaft 13133 and the second driving gear 13153 rotate relative to each other, and the second driving gear no longer continues to rotate. As the nitrogen gas in the nitrogen gas cylinder 12 decreases, the pressure of the nitrogen gas cylinder 12 decreases. When the pressure decreases to a certain extent, at this time, the output speed of nitrogen gas is slower and the hydrogen exhaust efficiency is reduced. The clamping device 1317 and the first rack 1316 are disengaged. Under the action of the first spring 13161, the first rack 1316 and the second rack 13162 move upward, and the second rack 13162 drives the fourth transmission gear 13156 to rotate in the reverse direction. See Figure 14At this time, the fourth transmission gear 13156 drives the third transmission gear 13155 to rotate through the one-way bearing 13157, and the third transmission gear 13155 drives the ring gear 13213 and the first connecting column 13218 to rotate counterclockwise around the axis of the rotating body 13212, the elastic member 13219 extends, and the first protrusion 13215 moves downward along the first limiting groove 13214. At this time, the ring gear 13213 and the rotating body 13212 rotate relatively, the rotating body 13212 does not rotate, and the nitrogen is still output from the second output port 1313. As the second rack 13162 moves upward, the ring gear 13213 continues to rotate counterclockwise. When the first protrusion 13215 moves to the first limiting groove When the second rack 13162 and the fourth transmission gear 13156 are disengaged, the first connecting column 13218 has passed directly under the rotating body 13212. Under the pulling force of the elastic member 13219, the elastic member 13219 continues to drive the ring gear 13213 and the rotating body 13212 to rotate counterclockwise until the second protrusion 13217 moves to the end of the second limiting groove 13216. Figure 4 and Figure 5 At this time, the air channel 13211 reconnects the connection port 1311 and the first output port 1312 , that is, the ventilation mechanism 132 returns to the first state, and nitrogen starts to be output from the first output port 1312 .

[0047] As an implementation method, the clamping device 1317 includes a cylinder body 13171 fixedly connected to the main body 131, a piston 13172 slidably connected to the cylinder body 13171, and a piston rod 13173 fixedly connected to the piston 13172. A side groove 13111 is provided on one side of the connecting port 1311, and an oil plug 13112 is slidably connected in the side groove. The side groove is connected to the cylinder body 13171 through a pipe 13174, and the side of the oil plug away from the connecting port 1311 is connected to the bottom of the side groove through a third spring 13113. Oil is provided in the tube 13174 and the cylinder body 13171, and one end of the cylinder body 13171 close to the tube 13174 is connected to the piston 13172 through a second spring 13175, and the piston rod 13173 is provided at one end of the piston 13172 away from the second spring 13175, and a slot 13176 for cooperating with the piston rod 13173 is provided on one side of the lower end of the first rack 1316, and a slope 13177 is provided at the lower end of the piston rod 13173 for facilitating the insertion of the piston rod 13173 into the slot 13176.

[0048] With the above settings, when the pressure in the nitrogen cylinder 12 decreases to a certain extent, the ventilation mechanism 132 automatically starts to switch states. When the switch valve of the nitrogen cylinder 12 is not opened, the second spring and the third spring are basically not deformed. Refer to Figure 2 and Figure 6 , the connection port is connected to the first output port through the air duct, that is, the ventilation mechanism is in the first state. When discharging hydrogen, the switch valve is opened, the air pressure in the connection port increases, the oil plug moves to the right, and the third spring shortens. Refer to Figure 7 , under the action of the oil, the piston 13172 moves to the right and abuts against one end of the cylinder block. Under the action of the first driving gear, the annular gear 13213 rotates. Refer to Figure 4 , during the rotation of the annular gear 13213, the annular gear 13213 drives the third transmission gear 13155 to rotate, and the second rack 13162 disengages from the fourth transmission gear 13156, so the first rack 1316 and the second rack 13162 do not move.

[0049] When the ventilation mechanism 132 is in the second state, nitrogen gas passes from one side of the second wind wheel 13132 and drives the second wind wheel 13132 to rotate. The second wind wheel 13132 drives the second rotating shaft 13133 to rotate. Since there is damping oil between the second rotating shaft 13133 and the second driving gear 13153, under the action of damping, the second driving gear 13153 rotates and drives the first rack 1316 and the second rack 13162 to move downward through the second transmission gear 13154. The first spring 13161 is stretched. When the lower end of the first rack 1316 moves to the piston rod, under the action of the inclined surface 13177, the inclined surface 13177 presses the piston rod 13173, and the second spring 13175 is shortened. When the piston rod 13173 moves to the slot 13176, the second spring 13175 extends and causes the piston rod 13173 to insert into the slot 13176, thereby realizing the connection between the clamping device 1317 and the first rack 1316, and further preventing the first rack 1316 from moving up and down. When the lower end of the second rack 13162 moves to the fourth transmission gear 13156, the second rack 13162 meshes with the fourth transmission gear 13156 and drives the fourth transmission gear 13156 to rotate. Since there is a one-way bearing 13157 between the third transmission gear 13155 and the fourth transmission gear 13156, under the action of the one-way bearing 13157, the rotation of the fourth transmission gear 13156 will not drive the rotation of the third transmission gear 13155, that is, the annular gear 13213 will not rotate, that is, the ventilation mechanism 132 will remain in the second state, and nitrogen gas will continuously discharge hydrogen from the hydrogen production system. When the piston rod and the slot are engaged, the first rack 1316 cannot continue to move downward, that is, the second driving gear 13153 cannot continue to rotate. At this time, although nitrogen gas can continue to drive the second rotating shaft 13133 and the second wind wheel 13132 to rotate, the second rotating shaft 13133 and the second driving gear 13153 rotate relative to each other, and the second driving gear no longer continues to rotate. As the nitrogen gas in the nitrogen gas cylinder 12 decreases, the pressure of the nitrogen gas cylinder 12 decreases. When the pressure decreases to a certain extent, at this time, the output speed of nitrogen gas is slow, and the hydrogen discharge efficiency is reduced. It is necessary to replace the nitrogen gas cylinder in time. Since the air pressure in the connection port decreases, under the action of the third spring, the oil plug moves to the left. Under the action of the oil, the second spring extends, the piston moves to the left and drives the piston rod away from the slot. When the piston rod is pulled out of the slot, under the action of the first spring 13161, the first rack 1316 and the second rack 13162 move upward, and the second rack 13162 drives the fourth transmission gear 13156 to rotate in the reverse direction. See Figure 14At this time, the fourth transmission gear 13156 drives the third transmission gear 13155 to rotate through the one-way bearing 13157, and the third transmission gear 13155 drives the ring gear 13213 and the first connecting column 13218 to rotate counterclockwise around the axis of the rotating body 13212, the elastic member 13219 extends, and the first protrusion 13215 moves downward along the first limiting groove 13214. At this time, the ring gear 13213 and the rotating body 13212 rotate relatively, the rotating body 13212 does not rotate, and the nitrogen is still output from the second output port 1313. As the second rack 13162 moves upward, the ring gear 13213 continues to rotate counterclockwise. When the first protrusion 13215 moves to the first limiting groove When the second rack 13162 and the fourth transmission gear 13156 are disengaged, the first connecting column 13218 has passed directly under the rotating body 13212. Under the pulling force of the elastic member 13219, the elastic member 13219 continues to drive the ring gear 13213 and the rotating body 13212 to rotate counterclockwise until the second protrusion 13217 moves to the end of the second limiting groove 13216. Figure 4 and Figure 5 At this time, the air channel 13211 reconnects the connection port 1311 and the first output port 1312, that is, the ventilation mechanism 132 returns to the first state, and nitrogen starts to be output from the first output port 1312. After replacing the nitrogen bottle on the connection port, repeat the above process to continue to discharge hydrogen.

[0050] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A hydrogen discharge device for a hydrogen production system, characterized in that, It includes a hydrogen discharge pipe, a nitrogen gas cylinder, and a connector for connecting to the nitrogen gas cylinder. The nozzle of the hydrogen discharge pipe faces upward. The lower end of the hydrogen discharge pipe is connected to the pipeline of the hydrogen production system. A hydrogen discharge valve is provided at the lower end of the hydrogen discharge pipe. The connector includes a main body, and the main body is provided with a connection port, a first output port, and a second output port. The first output port communicates with the atmosphere, the second output port is connected to the pipeline, and the connection port is connected to the nitrogen gas cylinder. The connector further includes a ventilation mechanism. The ventilation mechanism includes a first state and a second state. When the ventilation mechanism is in the first state, the connection port communicates with the first output port through the ventilation mechanism. When the ventilation mechanism is in the second state, the connection port communicates with the second output port through the ventilation mechanism. A rotation groove is provided in the main body. The first output port, the second output port, and the connection port are evenly arranged along the circumference of the rotation groove and are all communicated with the rotation groove. The ventilation mechanism includes a valve core rotatably connected in the rotation groove. The valve core is provided with an air passage. The ventilation mechanism further includes a rotation device for driving the valve core to rotate. When the ventilation mechanism is in the first state, the connection port communicates with the first output port through the air passage. When the ventilation mechanism is in the second state, the connection port communicates with the second output port through the air passage. A first accommodating groove is provided on one side of the first output port, a back groove is provided on the back side of the main body, the rotating device includes a first wind wheel rotatably connected in the first accommodating groove, the first wind wheel is at least partially arranged in the first output port, the first wind wheel is fixedly connected to a first rotating shaft, the first rotating shaft is rotatably connected to the main body and is at least partially arranged in the back groove, a first driving gear is rotatably connected to the bottom of the back groove, the first driving gear is fixedly connected to the first rotating shaft, the valve core is fixedly connected to a rotating body coaxial with the valve core, the rotating body is at least partially arranged in the back groove, a ring gear is provided on the rotating body, the ring gear and the rotating body are rotatably connected, the ring gear and the first driving gear are driven by a first transmission gear, a first limiting groove is provided on one side of the rotating body, one end of the first limiting groove is arranged on the lower side of the rotating body, and the other end of the first limiting groove is arranged on the rotating body close to the first driving gear. The first protrusion is fixedly connected to the inner side of the ring gear, the first protrusion is slidably connected in the first limiting groove and abuts with an end of the first limiting groove close to the first driving gear, the rotating body is provided with a second limiting groove, the second limiting groove is provided with a second protrusion, the second protrusion is fixedly connected to the bottom of the groove of the back groove, and the second protrusion abuts with an end of the second limiting groove away from the first driving gear, and the side of the ring gear away from the main body is fixedly connected with a first connecting column, the first connecting column is provided on the side of the ring gear close to the first driving gear, and a second connecting column is provided above the ring gear, the second connecting column is fixedly connected to the bottom of the groove of the back groove, and the first connecting column and the second connecting column are connected by an elastic member; when the first protrusion moves to the lower end of the first limiting groove, the first protrusion drives the rotating body to rotate counterclockwise, and the rotating body drives the valve core to rotate, the airway and the connecting port are slowly staggered, and the airway and the second output port are slowly staggered.

2. The hydrogen discharge device of a hydrogen production system according to claim 1, characterized in that, The hydrogen production system includes a hydrogen production tank and a hydrogen storage tank, the pipeline includes a first connecting pipe for connecting the hydrogen storage tank and the hydrogen production tank, the first connecting pipe is provided with a first control valve and a compression pump, the compression pump is located between the first control valve and the hydrogen storage tank, the end of the hydrogen storage tank away from the first connecting pipe is connected to a second connecting pipe, and the second connecting pipe is provided with a second control valve.

3. The hydrogen discharge device of a hydrogen production system according to claim 2, characterized in that There are two hydrogen exhaust pipes, one of which is arranged between the second control valve and the hydrogen storage tank, and the other is arranged between the compression pump and the first control valve. The second output port is connected to the first connecting pipe through a third connecting pipe, and the third connecting pipe is arranged between the compression pump and the hydrogen storage tank. A third control valve is arranged on the third connecting pipe.

4. The hydrogen discharge device of a hydrogen production system according to claim 1, characterized in that, A second receiving groove is provided on one side of the second outlet. The rotating device further includes a second wind wheel rotatably connected in the second receiving groove. The second wind wheel is fixedly connected to a second rotating shaft. A second driving gear is rotatably connected to the bottom of the back groove. The second rotating shaft is rotatably connected to the main body and passes through the second driving gear. The second driving gear is rotatably connected to the second rotating shaft. A damping oil is provided between the second rotating shaft and the second driving gear. A second transmission gear is rotatably connected to the bottom of the back groove. The second transmission gear meshes with the second driving gear on the side close to the rotating body. A first rack extending vertically is slidably connected to the main body. The first rack meshes with the second transmission gear on the side close to the rotating body. The upper end of the first rack is connected to the main body by a first spring. A clamping device is provided below the first rack on the main body. A second rack is fixedly connected to the side of the first rack close to the rotating body. A third transmission gear is rotatably connected to the bottom of the back groove. A fourth transmission gear is provided on the side of the third transmission gear away from the main body. The third transmission gear and the fourth transmission gear are connected by a one-way bearing. The third transmission gear and the fourth transmission gear are coaxial. The third transmission gear abuts against the side of the annular gear close to the second driving gear. The fourth transmission gear is provided between the second rack and the annular gear and is used to mesh with the second rack. The second rack and the fourth transmission gear are disengaged and located above the fourth transmission gear.

5. The hydrogen discharge device of a hydrogen production system according to claim 4, characterized in that, The clamping device includes a cylinder fixedly connected to the main body, a piston slidably connected in the cylinder, and a piston rod fixedly connected to the piston. A side groove is provided on one side of the connection port. An oil plug is slidably connected in the side groove. The side groove is connected to the cylinder through a pipe. The side of the oil plug away from the connection port is connected to the bottom of the side groove by a third spring. An oil liquid is provided in the side groove, the pipe and the cylinder. One end of the cylinder close to the pipe is connected to the piston by a second spring. The piston rod is provided at the end of the piston away from the second spring. A slot for cooperating with the piston rod is provided on one side of the lower end of the first rack. The lower end of the piston rod is provided with an inclined surface to facilitate the insertion of the piston rod into the slot.

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