A bubbling humidifier suitable for large-flow fuel cell testing equipment

Abstract

The present invention belongs to the field of hydrogen fuel cell technology, and specifically discloses a bubbling humidifier suitable for large-flow fuel cell testing equipment, comprising a tank body, an aeration device, and an anti-boiling device; the tank body is composed of an upper tank body and a lower tank body, and the upper tank body and the lower tank body are connected by an upper tank body flange and a lower tank body flange; the aeration device and the anti-boiling device are arranged inside the tank body. The present invention adopts the above-mentioned bubbling humidifier suitable for large-flow fuel cell testing equipment, adopts a bubbling humidification method, and uses circulating water to complete the humidification of the gas. Through the design of the aeration ring, the humidification effect of the humidifier is effectively improved, while the overall size of the humidifier is reduced, the production cost is reduced, and it is easy to promote and use; the design of the water inlet and outlet pipes slows down the flow of circulating water in the tank body, reduces the disturbance of the circulating water to the gas, and improves the stability of the humidifier; the design of the anti-boiling device effectively prevents water from rushing out of the tank body when the gas flow rate is too high.

Description

Technical Field

[0001] The invention belongs to the technical field of hydrogen fuel cells, and in particular relates to a bubbling humidifier suitable for large-flow fuel cell testing equipment. Background Art

[0002] Fuel cells, as a clean energy technology, are significantly impacted by the humidity level of the cathode air. To ensure optimal fuel cell operation, precise humidity control is essential. Bubble humidifiers, as efficient and stable humidity control devices, have been widely used in fuel cell testing to provide the required humidified air.

[0003] Chinese utility model patent application number 202220711300.0 discloses a spray bubbling humidifier for fuel cell testing equipment, comprising a tank body and employing both bubbling and spraying humidification methods. The aforementioned patented spray bubbling humidifier for fuel cell testing equipment suffers from the following deficiencies: It employs two humidification methods to improve humidification, resulting in a complex structural arrangement, large space requirements, and increased operating costs, hindering widespread use; and it fails to consider the impact of water inlet and outlet on internal gas flow.

[0004] Therefore, there is a need in the art to develop a bubbling humidifier suitable for large-flow fuel cell testing equipment that can effectively solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a bubbling humidifier suitable for large-flow fuel cell testing equipment. The bubbling humidification method is adopted to use circulating water to complete the humidification of the gas. Through the design of the aeration ring, the humidification effect of the humidifier is effectively improved, and at the same time the overall size of the humidifier is reduced, the production cost is reduced, and it is easy to promote and use; the design of the inlet and outlet pipes slows down the flow of circulating water in the tank body, reduces the disturbance of the circulating water to the gas, and improves the stability of the humidifier; the design of the anti-boiling device effectively prevents water from rushing out of the tank body when the gas flow rate is too high.

[0006] To achieve the above-mentioned objectives, the present invention provides a bubbling humidifier suitable for large-flow fuel cell testing equipment, comprising a tank body, an aeration device and an anti-boiling device; the tank body is composed of an upper tank body and a lower tank body, and the upper tank body and the lower tank body are connected by an upper tank body flange and a lower tank body flange; the aeration device and the anti-boiling device are arranged inside the tank body.

[0007] Preferably, a tank air outlet is provided at the top of the upper tank body, and a tank air outlet flange is provided at the tank air outlet;

[0008] A tank body drain pipe is provided at the bottom of the lower tank body, and a drain pipe flange is provided at the output end of the tank body drain pipe.

[0009] Preferably, the side wall of the lower tank body is provided with a tank water inlet, a tank water outlet, a tank air inlet and a sensor mounting hole; the tank water inlet and the tank water outlet are respectively provided with a tank water inlet flange and a tank water outlet flange.

[0010] Preferably, a water inlet ring is provided inside the lower tank body, and a water outlet groove is provided on the water inlet ring, and the water outlet grooves are evenly distributed on the water inlet ring; the water inlet ring is connected to the water inlet of the tank body.

[0011] Preferably, a water outlet pipe is provided at the bottom end of the lower tank body, and the output end of the water outlet pipe is connected to the water outlet of the tank body; a hemispherical protective cover is provided at the connection between the water outlet pipe and the water outlet of the tank body.

[0012] Preferably, an aeration device is provided inside the lower tank body, and a first layer of aeration rings and a second layer of aeration rings are provided at the bottom of the aeration device in order from top to bottom;

[0013] The first layer of aeration rings is connected to the aeration main pipe via a first sector-shaped connecting surface; the second layer of aeration rings is connected to the aeration main pipe via a second sector-shaped connecting surface, and a bracket is provided inside the sector-shaped connecting surface of the aeration main pipe.

[0014] Preferably, the input end of the aeration main pipe is connected to the air inlet of the tank body; the diameter of the tail end of the aeration main pipe gradually decreases from top to bottom, and the tail end ends in a spherical shape.

[0015] Preferably, both the first layer of aeration rings and the second layer of aeration rings are provided with aeration holes;

[0016] The ratio of the cross-sectional area of ​​the aeration main pipe to the total area of ​​the aeration holes is 0.04-0.2; and the flow rate of the aeration main pipe is reduced by 5-25 times.

[0017] Preferably, an anti-boiling device is provided inside the upper tank body, and the anti-boiling device is divided into four layers, namely the first anti-boiling plate, the second anti-boiling plate, the third anti-boiling plate, and the fourth anti-boiling plate; two adjacent anti-boiling plates are connected by a fixed bracket; the second anti-boiling plate and the fourth anti-boiling plate are both provided with gas flow ports.

[0018] Preferably, an isolation sleeve is provided at the bottom end of the anti-boiling device, and the anti-boiling device is connected to the interior of the tank body through the isolation sleeve.

[0019] The present invention uses the above-mentioned bubbling humidifier suitable for large-flow fuel cell testing equipment, and the beneficial effects are as follows:

[0020] (1) The present invention effectively improves the humidification effect of the humidifier through the design of the aeration ring, while reducing the overall size of the humidifier, reducing production costs, and facilitating promotion and use;

[0021] (2) The present invention slows down the flow of circulating water in the tank through the design of the water inlet and outlet pipes, reduces the disturbance of the circulating water to the gas, and improves the stability of the humidifier; the design of the circulating water ensures that the temperature of the water inside the tank is constant;

[0022] (3) The present invention designs an anti-boiling device for the bubbling humidifier to prevent the water in the tube from rushing out of the tank along with the gas when the gas flow rate is too fast. The anti-boiling device allows the excess water to flow back to the bottom of the tank along the anti-boiling plate through the outside of the isolation sleeve.

[0023] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a bubbling humidifier suitable for a large flow fuel cell testing device according to the present invention;

[0025] Figure 2 A rear view of an embodiment of a bubbling humidifier suitable for a large flow fuel cell testing device according to the present invention;

[0026] Figure 3 A front full cross-sectional view of an embodiment of a bubbling humidifier suitable for a large flow fuel cell testing device according to the present invention;

[0027] Figure 4 A top, full-section view of an embodiment of a bubbling humidifier suitable for a large-flow fuel cell testing device according to the present invention;

[0028] Figure 5 This is a schematic structural diagram of an aeration device of an embodiment of a bubbling humidifier suitable for a large flow fuel cell testing device according to the present invention;

[0029] Figure 6 This is a structural schematic diagram of an anti-boiling device of an embodiment of a bubbling humidifier suitable for large-flow fuel cell testing equipment of the present invention.

[0030] Reference numerals

[0031] 1. Tank drain pipe; 2. Lower tank body; 3. Tank water inlet; 4. Lower tank flange; 5. Upper tank flange; 6. Upper tank body; 7. Tank air outlet; 8. Tank air inlet; 9. Tank water outlet; 10. Anti-boiling device; 11. Isolation sleeve; 12. Water inlet ring; 13. Hemispherical protective cover; 14. Drain pipe flange; 15. Tank water inlet flange; 16. Tank air outlet flange; 17. Tank water outlet Flange; 18. Sensor mounting hole; 19. Water outlet; 20. First-layer aeration ring; 21. Second-layer aeration ring; 22. Aeration main pipe; 23. Second fan-shaped connecting surface; 24. First fan-shaped connecting surface; 25. Bracket; 26. First-layer anti-boiling plate; 27. Second-layer anti-boiling plate; 28. Third-layer anti-boiling plate; 29. ​​Fourth-layer anti-boiling plate; 30. Fixed bracket; 31. Gas flow port; 32. Aeration device. DETAILED DESCRIPTION

[0032] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0033] Unless otherwise defined, technical or scientific terms used in the present invention shall have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs.

[0034] Example

[0035] like Figure 1-Figure 2 As shown, a bubbling humidifier suitable for high-flow fuel cell testing equipment includes a tank body, an aeration device 32, and an anti-boiling device 10. The tank body consists of an upper tank body 6 and a lower tank body 2, which are connected by an upper tank body flange 5 and a lower tank body flange 4. The aeration device 32 and anti-boiling device 10 are installed inside the tank body.

[0036] The top of the upper tank body 6 is provided with a tank air outlet 7, which is connected to a tank air outlet flange 16. The bottom of the lower tank body 2 is provided with a tank drain pipe 1, the output end of which is provided with a drain pipe flange 14. The sidewalls of the lower tank body 2 are provided with a tank water inlet 3, a tank water outlet 9, a tank air inlet 8, and a sensor mounting hole 18. The tank water inlet 3 and tank water outlet 9 are respectively provided with a tank water inlet flange 15 and a tank water outlet flange 17.

[0037] like Figure 3-Figure 4 As shown, the lower tank body 2 is equipped with a water inlet ring 12, which is equipped with water outlet grooves 19. The water outlet grooves 19 are evenly distributed on the water inlet ring 12, and the water inlet ring 12 is connected to the tank body water inlet 3. The design of the water inlet ring 12 and the water outlet grooves 19 reduces the water flow velocity and changes the direction of the water flow, allowing the water to enter the tank body more smoothly. This change in direction causes the water to flow vertically to the bottom of the tank body, avoiding the upward flow path of the gas, thereby reducing the impact of the circulating water flow on gas humidification.

[0038] A water outlet pipe is provided at the bottom of the lower tank 2, the output end of which is connected to the tank water outlet 9. A hemispherical protective cover 13 is provided at the junction of the water outlet pipe and the tank water outlet 9. This hemispherical protective cover 13 at the end of the water outlet pipe inside the tank water outlet 9 effectively prevents gas from exiting the aeration device 32 through the tank water outlet 9.

[0039] like Figure 5 As shown, the lower tank 2 is equipped with an aeration device 32. The bottom of the aeration device 32 is provided with, from top to bottom, a first layer of aeration rings 20 and a second layer of aeration rings 21. The first layer of aeration rings 20 is connected to the main aeration pipe 22 via a first sector-shaped connecting surface 24. The second layer of aeration rings 21 is connected to the main aeration pipe 22 via a second sector-shaped connecting surface 23. Brackets 25 are provided within the sector-shaped connecting surface of the main aeration pipe 22 for support. The connection between the aeration rings and the main aeration pipe 22 via the sector-shaped connecting surface increases gas flow.

[0040] Both the first and second aeration rings 20 and 21 are equipped with aeration holes. Aeration holes with large diameters are distributed in small numbers, while those with small diameters are distributed in large numbers. To reduce the gas flow rate at the aeration hole outlets, the ratio of the cross-sectional area of ​​the aeration main pipe 22 to the total area of ​​the aeration holes is 0.04-0.2. Since the total area of ​​the aeration holes is inversely proportional to the flow rate, the flow rate of the aeration main pipe 22 is reduced by 5-25 times.

[0041] The input end of the aeration main pipe 22 is connected to the tank air inlet 8. The diameter of the tail end of the aeration main pipe 22 gradually decreases from top to bottom, and the tail end ends in a spherical shape.

[0042] like Figure 6 As shown, the interior of the upper tank body 6 is equipped with a boiling prevention device 10. The boiling prevention device 10 is divided into four layers: a first boiling prevention plate 26, a second boiling prevention plate 27, a third boiling prevention plate 28, and a fourth boiling prevention plate 29. Adjacent boiling prevention plates are connected by fixing brackets 30. The second boiling prevention plate 27 and the fourth boiling prevention plate 29 are each provided with a gas flow port 31. An isolation sleeve 11 is provided at the bottom end of the boiling prevention device 10, connecting the boiling prevention device 10 to the interior of the tank body through the isolation sleeve 11.

[0043] When the gas flow rate is too fast, the gas will carry some water to the anti-boiling plate, which will block the water and change the direction of the water flow. Under the action of gravity, the water will flow along the edge of the anti-boiling plate through the outer wall of the isolation sleeve 11 and return to the bottom of the tank body, thereby effectively preventing the water from rushing to the tank body outlet 7 along with the gas and then rushing out of the tank body.

[0044] When this embodiment is used, the gas to be humidified is first connected to the air inlet 8 of the tank body, and the circulating water is respectively connected to the water inlet 3 and the water outlet 9 of the tank body.

[0045] During operation, the gas to be humidified enters the tank through the air inlet 8, flows through the aeration main 22, the first sector-shaped connecting surface 24, and the second sector-shaped connecting surface 23, and reaches the first and second aeration rings 20 and 21, respectively. The gas flows out through the aeration holes in the aeration rings, flows through the circulating water for humidification, and finally flows out of the tank through the air outlet 7.

[0046] The circulating water flows into the water inlet ring 12 from the water inlet 3 of the tank body, and then flows into the interior of the lower tank body 2 through the water outlet 19 on the water inlet ring 12, and the circulating water is circulated through the water outlet 9 of the tank body.

[0047] When the gas flow rate is too fast, the gas will carry some water to the anti-boiling plate. After being blocked by the anti-boiling plate, the water flows along the edge of the anti-boiling plate and the outer wall of the isolation sleeve 11 back to the bottom of the tank body, and the gas is humidified and flows along the tank body outlet 7 to the required equipment.

[0048] When the tank is not in use, the water inside the lower tank body 2 is discharged through the tank body drain pipe 1.

[0049] Therefore, the present invention adopts the above-mentioned bubbling humidifier suitable for large-flow fuel cell testing equipment, adopts the bubbling humidification method, and uses circulating water to complete the humidification of the gas. Through the design of the aeration ring, the humidification effect of the humidifier is effectively improved, and at the same time the overall size of the humidifier is reduced, the production cost is reduced, and it is convenient for promotion and use; the design of the inlet and outlet water pipelines slows down the flow of circulating water in the tank body, reduces the disturbance of circulating water to the gas, and improves the stability of the humidifier; the design of the anti-boiling device effectively prevents water from rushing out of the tank body when the gas flow rate is too high.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the same. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solutions of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A bubbling humidifier suitable for large-flow fuel cell testing equipment, characterized by: It includes a tank body, an aeration device and an anti-boiling device; the tank body is composed of an upper tank body and a lower tank body, and the upper tank body and the lower tank body are connected by an upper tank body flange and a lower tank body flange; the aeration device and the anti-boiling device are arranged inside the tank body; An aeration device is provided inside the lower tank body. A first layer of aeration rings and a second layer of aeration rings are provided at the bottom of the aeration device in descending order. The first layer of aeration rings is connected to the aeration main pipe via a first fan-shaped connecting surface. The second layer of aeration rings is connected to the aeration main pipe via a second fan-shaped connecting surface. A bracket is provided within the fan-shaped connecting surface of the aeration main pipe. The input end of the aeration main pipe is connected to the air inlet of the tank body. The diameter of the tail end of the aeration main pipe gradually decreases from top to bottom, and the tail end is spherical. Aeration holes are provided on both the first and second aeration rings; the ratio of the cross-sectional area of ​​the aeration main pipe to the total area of ​​the aeration holes is 0.04-0.2, so that the flow rate of the aeration main pipe is reduced by 5-25 times; An anti-boiling device is provided inside the upper tank body, and the anti-boiling device is divided into four layers, namely the first anti-boiling plate, the second anti-boiling plate, the third anti-boiling plate, and the fourth anti-boiling plate; two adjacent anti-boiling plates are connected by a fixed bracket; the second anti-boiling plate and the fourth anti-boiling plate are both provided with gas circulation ports.

2. The bubbling humidifier suitable for large-flow fuel cell testing equipment according to claim 1, characterized in that: A tank air outlet is provided on the top of the upper tank body, and a tank air outlet flange is provided at the tank air outlet; A tank body drain pipe is provided at the bottom of the lower tank body, and a drain pipe flange is provided at the output end of the tank body drain pipe.

3. The bubbling humidifier suitable for large-flow fuel cell testing equipment according to claim 2, characterized in that: The side wall of the lower tank body is provided with a tank body water inlet, a tank body water outlet, a tank body air inlet and a sensor installation hole; the tank body water inlet and the tank body water outlet are respectively provided with a tank body water inlet flange and a tank body water outlet flange.

4. The bubbling humidifier suitable for large-flow fuel cell testing equipment according to claim 3, characterized in that: A water inlet ring is provided inside the lower tank body, and a water outlet groove is provided on the water inlet ring. The water outlet grooves are evenly distributed on the water inlet ring; the water inlet ring is connected to the water inlet of the tank body.

5. The bubbling humidifier suitable for large-flow fuel cell testing equipment according to claim 4, characterized in that: A water outlet pipe is provided at the bottom end of the lower tank body, and the output end of the water outlet pipe is connected to the water outlet of the tank body; a hemispherical protective cover is provided at the connection between the water outlet pipe and the water outlet of the tank body.

6. The bubbling humidifier suitable for a large flow fuel cell testing device according to claim 1, characterized in that: An isolation sleeve is provided at the bottom end of the anti-boiling device, and the anti-boiling device is connected to the interior of the tank body through the isolation sleeve.

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