A drain device for a hydrogen fuel stack and a method of using the same

Abstract

The present application relates to a kind of drainage device for hydrogen fuel stack, drainage device is used to empty the residual deionized water in stack cavity after hydrogen fuel stack cleaning, the drainage device includes fixed support, rotating unit, mounting bracket and motor unit, the rotating unit includes main cantilever, main rotating mechanism and vice rotating mechanism, one end of the main rotating mechanism is connected with fixed support, the other end of the main rotating mechanism is connected with main cantilever, one end of the vice rotating mechanism is connected with main cantilever, and the other end of vice rotating mechanism is connected with mounting bracket;The mounting bracket is used to fix hydrogen fuel stack;The motor unit includes first servo motor and second servo motor, the first servo motor is fixed on fixed support, first servo motor is connected with main rotating mechanism, the second servo motor is fixed on main cantilever, and second servo motor is connected with vice rotating mechanism.Compared with prior art, the present application is simple to operate, avoids the damage of stack falling and injures accident.

Description

Technical Field

[0001] This invention relates to the field of fuel cells, and in particular to a drainage device for hydrogen fuel cell stacks and its method of use. Background Technology

[0002] The fuel cell stack is the most basic unit of a fuel cell. It consists of several electrode plates and numerous structural components. During assembly, dust and graphite powder may remain inside the stack. Deionized water is used to flush the stack, removing these impurities. After flushing, the deionized water is drained before proceeding to the next process. Due to the overall design of the fuel cell stack, the drain outlet is not at the bottom but in the middle. Natural drainage can only remove half of the impurities, causing problems for the next process.

[0003] Currently, the deionized water in the fuel cell stack is first drained halfway down when the stack is laid flat. Then, one end of the stack is manually lifted about 60 degrees to drain the deionized water a second time. However, since the stack weighs over 100 kilograms, multiple people are needed to lift it manually. This process is prone to tipping over and causing damage or injury. Even with manual lifting to assist drainage, about a quarter of the deionized water remains inside the stack, causing significant problems for subsequent processes. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects of the prior art by providing a drainage device and its usage method for hydrogen fuel cell stacks. Through the cooperation of multiple servo motors and mechanical structures, the stack can be rotated in multiple positions to completely drain the deionized water while reducing labor intensity.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A drainage device for a hydrogen fuel cell stack is disclosed. The device is used to drain residual deionized water from the stack cavity after cleaning. The drainage device includes a fixed support, a rotating unit, a mounting bracket, and a motor unit.

[0007] The rotating unit includes a main cantilever, a main rotating mechanism, and a secondary rotating mechanism. One end of the main rotating mechanism is connected to a fixed bracket, and the other end of the main rotating mechanism is connected to the main cantilever. One end of the secondary rotating mechanism is connected to the main cantilever, and the other end of the secondary rotating mechanism is connected to a mounting bracket. The mounting bracket is used to fix the hydrogen fuel cell stack.

[0008] The motor unit includes a first servo motor and a second servo motor. The first servo motor is fixed on a fixed bracket and connected to the main rotating mechanism. The second servo motor is fixed on the main cantilever and connected to the auxiliary rotating mechanism.

[0009] Furthermore, the main rotating mechanism includes a main rotating bearing, a first lower bearing seat, and a first upper bearing seat. The first lower bearing seat is fixed to the upper end of the fixed bracket, and a first bearing cavity is formed between the first lower bearing seat and the first upper bearing seat. The main rotating bearing passes through the first bearing cavity and is connected to the main cantilever. The main rotating bearing drives the main cantilever to rotate.

[0010] Furthermore, the first lower bearing housing and the first upper bearing housing are connected by screws.

[0011] Furthermore, the first upper bearing housing is designed with a convex structure in the middle part, and there are two first upper bearing housings.

[0012] Furthermore, each end of the mounting bracket is provided with a secondary rotating mechanism.

[0013] Furthermore, the secondary rotating mechanism includes a secondary rotating bearing and a second upper bearing housing. A second bearing cavity is formed between the second upper bearing housing and the main cantilever. The secondary rotating bearing passes through the second bearing cavity and is connected to the mounting bracket. The secondary rotating bearing drives the mounting bracket to rotate.

[0014] Furthermore, the second upper bearing housing is fixed to the main cantilever by screws, and the middle part of the second upper bearing housing is designed with a convex structure.

[0015] Furthermore, the main cantilever is a hollow structure, and the mounting bracket rotates within the main cantilever under the control of the secondary rotary bearing.

[0016] Furthermore, the first servo motor is fixed to the fixed bracket with screws, the second servo motor is fixed to the main cantilever with screws, and the hydrogen fuel cell stack is fixed to the mounting bracket with screws.

[0017] In addition, the present invention also provides a method for using a drainage device for a hydrogen fuel cell stack, the specific steps of which are as follows:

[0018] S1. Flip the mounting bracket to a horizontal position, place the hydrogen fuel cell stack on the mounting bracket using a special crane, fix the hydrogen fuel cell stack with screws, and start the device.

[0019] S2. The first and second servo motors, according to the set program, flip the mounting bracket to the lower right front position through the main rotation mechanism and the auxiliary rotation mechanism, and keep it for three to five minutes until no residual deionized water is discharged.

[0020] S3. The mounting bracket is flipped to the lower right, lower left, and lower left positions in sequence by the first servo motor and the second servo motor to discharge the residual deionized water from the hydrogen fuel cell stack.

[0021] S4. Flip the mounting bracket to a vertical position with the water inlet at the top and the drain outlet at the bottom. The residual deionized water from the hydrogen fuel cell stack will be discharged through the drain outlet. Keep it for three to five minutes until no residual deionized water is discharged.

[0022] S5. Flip the mounting bracket to a horizontal position, remove the fixing screws, and manually use a special crane to lift the hydrogen fuel cell stack from the equipment to the next work station.

[0023] Compared with the prior art, the advantages of the present invention are as follows:

[0024] (1) The present invention provides a drainage device for hydrogen fuel cell stacks, which is operated by one person to hoist the battery onto the device and start the device to drain the water according to the pre-programmed steps until the deionized water is drained.

[0025] (2) The drainage device for hydrogen fuel cell stacks provided by the present invention is simple to operate, greatly reduces the transfer time, reduces the number of operators, reduces the workload of operators, and avoids stack falling damage and injury accidents. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a drainage device for a hydrogen fuel cell stack according to the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of a hydrogen fuel cell stack;

[0028] Figure 3 This is a schematic diagram illustrating a usage scenario of a drainage device for a hydrogen fuel cell stack according to the present invention;

[0029] Figure 4 This is a schematic diagram of the usage scenario of a drainage device for a hydrogen fuel cell stack according to the present invention, located at the lower right.

[0030] The reference numerals in the attached diagram are as follows: 1. Fixed bracket; 2. First servo motor; 3. Main cantilever; 4. Main rotary bearing; 5. Mounting bracket; 6. Second servo motor; 7. Secondary rotary bearing; 8. Hydrogen fuel cell stack; 9. Water inlet; 10. Drain outlet; 11. Stack cavity; 12. Residual deionized water; 13. First upper bearing seat; 14. Second upper bearing seat. Detailed Implementation

[0031] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0032] Example

[0033] refer to Figures 1 to 4This invention provides a drainage device for a hydrogen fuel cell stack. The drainage device is used to drain residual deionized water 12 from the stack cavity 11 after cleaning the hydrogen fuel cell stack 8. The drainage device includes a fixed support 1, a rotating unit, a mounting bracket 5, and a motor unit.

[0034] The rotating unit includes a main cantilever 3, a main rotating mechanism, and a secondary rotating mechanism. One end of the main rotating mechanism is connected to a fixed bracket 1, and the other end of the main rotating mechanism is connected to the main cantilever 3. One end of the secondary rotating mechanism is connected to the main cantilever 3, and the other end of the secondary rotating mechanism is connected to a mounting bracket 5. The mounting bracket 5 is used to fix the hydrogen fuel cell stack 8.

[0035] The motor unit includes a first servo motor 2 and a second servo motor 6. The first servo motor 2 is fixed on the fixed bracket 1 and is connected to the main rotation mechanism. The second servo motor 6 is fixed on the main cantilever 3 and is connected to the auxiliary rotation mechanism.

[0036] Furthermore, the main rotating mechanism includes a main rotating bearing 4, a first lower bearing seat and a first upper bearing seat 13. The first lower bearing seat is fixed to the upper end of the fixed bracket 1. A first bearing cavity is formed between the first lower bearing seat and the first upper bearing seat 13. The main rotating bearing 4 passes through the first bearing cavity and is connected to the main cantilever 3. The main rotating bearing 4 drives the main cantilever 3 to rotate.

[0037] Furthermore, the first lower bearing housing and the first upper bearing housing 13 are connected by screws.

[0038] Furthermore, the first upper bearing seat 13 is designed with a convex structure in the middle part, and there are two first upper bearing seats 13.

[0039] Furthermore, each end of the mounting bracket 5 is provided with a secondary rotating mechanism.

[0040] Furthermore, the secondary rotating mechanism includes a secondary rotating bearing 7 and a second upper bearing seat 14. A second bearing cavity is formed between the second upper bearing seat 14 and the main cantilever 3. The secondary rotating bearing 7 passes through the second bearing cavity and is connected to the mounting bracket 5. The secondary rotating bearing 7 drives the mounting bracket 5 to rotate.

[0041] Furthermore, the second upper bearing seat 14 is fixed to the main cantilever 3 by screws, and the second upper bearing seat 14 is designed with a convex structure in the middle part.

[0042] Furthermore, the main cantilever 3 is a hollow structure, and the mounting bracket 5 rotates within the main cantilever 3 under the control of the secondary rotary bearing 7.

[0043] Furthermore, the first servo motor 2 is fixed to the fixed bracket 1 with screws, the second servo motor 6 is fixed to the main cantilever 3 with screws, and the hydrogen fuel cell stack 8 is fixed to the mounting bracket 5 with screws.

[0044] In addition, the present invention also provides a method for using a drainage device for a hydrogen fuel cell stack, the specific steps of which are as follows:

[0045] S1. Flip the mounting bracket 5 to a horizontal position, place the hydrogen fuel cell stack 8 on the mounting bracket 5 using a special crane, fix the hydrogen fuel cell stack 8 with screws, and start the device.

[0046] S2, the first servo motor 2 and the second servo motor 6, according to the set program, flip the mounting bracket 5 to the front right lower position through the main rotation mechanism and the auxiliary rotation mechanism, and keep it for three to five minutes until no residual deionized water 12 is discharged;

[0047] S3. The mounting bracket 5 is flipped to the lower right, lower left, and lower left positions in sequence by the first servo motor 2 and the second servo motor 6 to discharge the residual deionized water 12 of the hydrogen fuel cell stack 8.

[0048] S4. Flip the mounting bracket 5 to a vertical position, with the water inlet 9 at the top and the drain outlet 10 at the bottom. The residual deionized water 12 of the hydrogen fuel cell stack 8 is discharged through the drain outlet 10. Keep it for three to five minutes until no residual deionized water 12 is discharged.

[0049] S5. Flip the mounting bracket 5 to a horizontal position, remove the fixing screws, and manually use a special crane to lift the hydrogen fuel cell stack 8 from the equipment to the next work station.

[0050] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A water draining device for a hydrogen fuel stack, the water draining device being used to drain residual deionized water (12) from a stack cavity (11) after a hydrogen fuel stack (8) has been cleaned, characterized in that, The drainage device includes a fixed bracket (1), a rotating unit, a mounting bracket (5), and a motor unit. The rotating unit includes a main cantilever (3), a main rotating mechanism and a secondary rotating mechanism. One end of the main rotating mechanism is connected to a fixed bracket (1), and the other end of the main rotating mechanism is connected to the main cantilever (3). One end of the secondary rotating mechanism is connected to the main cantilever (3), and the other end of the secondary rotating mechanism is connected to a mounting bracket (5). The mounting bracket (5) is used to fix the hydrogen fuel cell stack (8). The motor unit includes a first servo motor (2) and a second servo motor (6). The first servo motor (2) is fixed on the fixed bracket (1) and connected to the main rotating mechanism. The second servo motor (6) is fixed on the main cantilever (3) and connected to the auxiliary rotating mechanism. When in use, the first servo motor (2) and the second servo motor (6) sequentially flip the mounting bracket (5) to the front right lower, rear right lower, front left lower, and rear left lower states, thereby discharging the residual deionized water (12) from the hydrogen fuel cell stack (8); When the mounting bracket (5) is flipped to a vertical position, the water inlet (9) of the hydrogen fuel cell stack (8) is located at the top, and the drain outlet (10) of the hydrogen fuel cell stack (8) is located at the bottom. The residual deionized water (12) of the hydrogen fuel cell stack (8) is discharged through the drain outlet (10).

2. The water drain device for a hydrogen fuel cell stack according to claim 1, characterized by The main rotating mechanism includes a main rotating bearing (4), a first lower bearing seat and a first upper bearing seat (13). The first lower bearing seat is fixed to the upper end of the fixed bracket (1). A first bearing cavity is formed between the first lower bearing seat and the first upper bearing seat (13). The main rotating bearing (4) passes through the first bearing cavity and is connected to the main cantilever (3). The main rotating bearing (4) drives the main cantilever (3) to rotate.

3. The water drain device for a hydrogen fuel cell stack according to claim 2, characterized by The first lower bearing housing and the first upper bearing housing (13) are connected by screws.

4. A drainage device for a hydrogen fuel cell stack according to claim 2, characterized in that, The first upper bearing seat (13) is designed with a convex structure in the middle part, and there are two first upper bearing seats (13).

5. The water drain device for a hydrogen fuel cell according to claim 1, wherein Each end of the mounting bracket (5) is provided with a secondary rotating mechanism.

6. The water drain device for a hydrogen fuel cell according to claim 1, wherein The secondary rotating mechanism includes a secondary rotating bearing (7) and a second upper bearing housing (14). A second bearing cavity is formed between the second upper bearing housing (14) and the main cantilever (3). The secondary rotating bearing (7) passes through the second bearing cavity and is connected to the mounting bracket (5). The secondary rotating bearing (7) drives the mounting bracket (5) to rotate.

7. The water drain device for a hydrogen fuel cell according to claim 6, wherein The second upper bearing seat (14) is fixed to the main cantilever (3) by screws. The second upper bearing seat (14) is designed with a convex structure in the middle part.

8. The water drain device for a hydrogen fuel cell according to claim 6, wherein The main cantilever (3) is a hollow structure, and the mounting bracket (5) rotates within the main cantilever (3) under the control of the secondary rotary bearing (7).

9. The water drain device for a hydrogen fuel cell according to claim 1, wherein The first servo motor (2) is fixed to the fixed bracket (1) with screws, the second servo motor (6) is fixed to the main cantilever (3) with screws, and the hydrogen fuel cell stack (8) is fixed to the mounting bracket (5) with screws.

10. A method of using a drainage device for a hydrogen fuel cell stack according to any one of claims 1-9, comprising the following specific steps: S1. Flip the mounting bracket (5) to a horizontal position, place the hydrogen fuel cell stack (8) on the mounting bracket (5) using a special crane, fix the hydrogen fuel cell stack (8) with screws, and start the device; S2, the first servo motor (2) and the second servo motor (6) rotate the mounting bracket (5) to the front right lower position through the main rotation mechanism and the auxiliary rotation mechanism according to the set program, and keep it for three to five minutes until no residual deionized water (12) is discharged; S3. The mounting bracket (5) is flipped to the rear right lower, front left lower, and rear left lower states in sequence by the first servo motor (2) and the second servo motor (6) to discharge the residual deionized water (12) of the hydrogen fuel cell stack (8). S4. Flip the mounting bracket (5) to a vertical position, with the water inlet (9) at the top and the drain outlet (10) at the bottom. The residual deionized water (12) of the hydrogen fuel cell stack (8) is discharged through the drain outlet (10). Keep it for three to five minutes until no residual deionized water (12) is discharged. S5. Flip the mounting bracket (5) to a horizontal position, remove the fixing screws, and manually use a special crane to lift the hydrogen fuel cell stack (8) from the equipment to the next work station.

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