A water distributor suitable for high-power systems

Abstract

This utility model relates to the field of water separator technology, and more particularly to a water separator suitable for high-power systems. It includes a water separator housing, within which a horizontal partition at the bottom divides the space into an upper gas circulation chamber and a lower water storage chamber. The horizontal partition has several drainage holes. The gas circulation chamber is divided into an inlet chamber and an exhaust chamber by a vertical partition. A hydrogen return inlet is located on the upper part of one side of the inlet chamber. Several downwardly inclined inlet baffles are staggered on the side wall of the inlet chamber, and several upwardly inclined exhaust baffles are staggered on the side wall of the exhaust chamber. The top of each exhaust baffle has a downwardly curved barb. Stepped structures are also provided on the side walls of the inlet and exhaust chambers. Even with a large gas flow rate in a high-power fuel cell system, this design can improve water separation efficiency, effectively separating hydrogen from water, preventing large amounts of water from entering the hydrogen circulation pump and fuel cell stack, thus ensuring the stability of the hydrogen circulation pump and fuel cell system.

Description

Technical fields:

[0001] This utility model relates to the field of water distributor technology, and in particular to a water distributor suitable for high-power systems. Background technology:

[0002] Currently, in fuel cell systems, water generated during the power generation process is carried out by the hydrogen-containing gas mixture, resulting in a high water vapor content and high humidity in the mixture. Before entering the hydrogen recirculation pump, this water vapor needs to be separated. Gas-water separators are commonly used, but existing separators have low water separation efficiency and poor performance, making them only suitable for low-power fuel cell systems. For high-power fuel cell systems, with their large gas demand and high flow rates, ineffective gas-water separation will lead to a large amount of water entering the hydrogen recirculation pump and fuel cell stack, causing flooding, reducing stack power, and affecting the stability of the fuel cell system.

[0003] In summary, the gas-water separation problem in fuel cell hydrogen circulation systems has become a pressing technical challenge that needs to be addressed in the industry. Utility Model Content:

[0004] To overcome the shortcomings of existing technologies, this utility model provides a water separator suitable for high-power systems, which solves the problems of low water separation efficiency, poor effect, and easy flooding caused by large amounts of water entering the hydrogen circulation pump and fuel cell stack in previous gas-water separators.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] A water distributor suitable for high-power systems includes a water distributor housing. The water distributor housing is divided into an upper gas circulation chamber and a lower water storage chamber by a horizontal partition at the bottom. The horizontal partition has several water leakage holes. The gas circulation chamber is divided into an air inlet chamber and an air outlet chamber by a vertical partition. The bottoms of the air inlet chamber and the air outlet chamber are connected. A hydrogen return inlet is provided on the upper part of one side of the air inlet chamber. Several downwardly inclined air inlet baffles are staggered on the side wall of the air inlet chamber. A hydrogen return outlet is provided at the top of the air outlet chamber. Several upwardly inclined air outlet baffles are staggered on the side wall of the air outlet chamber. The top of the air outlet baffles has downwardly curved barbs. The side walls of the air inlet chamber and the air outlet chamber are also provided with stepped structures.

[0007] The stepped structure includes several steps of different heights on the inner wall of the water distributor housing.

[0008] A baffle plate is installed at the bottom of the horizontal partition.

[0009] The bottom of the water storage chamber is equipped with a drain valve and a drain outlet.

[0010] A pressure sensor is installed on the side of the exhaust chamber.

[0011] The water distributor housing, horizontal partition, vertical partition, air inlet baffle, and exhaust baffle are integrally formed.

[0012] The present invention adopts the above solution and has the following advantages:

[0013] By staggered downward-sloping intake baffles on the sidewalls of the intake chamber, water droplets on the intake baffles can flow downward into the water storage chamber. Furthermore, stepped structures on the sidewalls of both the intake and exhaust chambers allow the mixed gas to collide again at the steps, increasing the number of collisions and thus promoting gas-water separation and improving water separation efficiency. Additionally, staggered upward-sloping exhaust baffles on the sidewalls of the exhaust chamber, with downward-curving barbs at the top, create vortices that collect water droplets and allow them to flow downward into the water storage chamber. This combination of methods improves water separation efficiency even with high gas flow rates in high-power fuel cell systems, effectively separating hydrogen from water and preventing flooding caused by large amounts of water entering the hydrogen circulation pump and fuel cell stack, thus ensuring the stability of the hydrogen circulation pump and fuel cell system. Attached image description:

[0014] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the water distributor housing of this utility model.

[0016] In the diagram, 1 is the water separator housing, 2 is the horizontal baffle, 3 is the water leakage hole, 4 is the water storage chamber, 5 is the vertical baffle, 6 is the air inlet chamber, 7 is the exhaust chamber, 8 is the hydrogen return inlet, 9 is the air inlet baffle, 10 is the hydrogen return outlet, 11 is the exhaust baffle, 12 is the barb, 13 is the step, 14 is the baffle plate, 15 is the drain valve, 16 is the drain outlet, and 17 is the pressure sensor. Detailed implementation method:

[0017] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0018] like Figure 1-2As shown, a water distributor suitable for high-power systems includes a water distributor housing 1. The water distributor housing 1 is divided into an upper gas circulation chamber and a lower water storage chamber 4 by a horizontal partition 2 at the bottom. The horizontal partition 2 is provided with several water leakage holes 3. The gas circulation chamber is divided into an air inlet chamber 6 and an exhaust chamber 7 by a vertical partition 5. The bottoms of the air inlet chamber 6 and the exhaust chamber 7 are connected. A hydrogen return inlet 8 is provided on the upper part of one side of the air inlet chamber 6. Several downwardly inclined air inlet baffles 9 are staggered on the side wall of the air inlet chamber 6. A hydrogen return outlet 10 is provided at the top of the exhaust chamber 7. Several upwardly inclined exhaust baffles 11 are staggered on the side wall of the exhaust chamber 7. The top of the exhaust baffles 11 is provided with downwardly curved barbs 12. The side walls of the air inlet chamber 6 and the exhaust chamber 7 are also provided with stepped structures.

[0019] The stepped structure includes several steps 13 of different heights on the inner wall of the water separator housing 1, which can cause the mixed gas to collide again at the steps 13, increasing the number of collisions, thereby promoting gas-water separation and improving the water separation effect.

[0020] The bottom of the horizontal partition 2 is equipped with a baffle plate 14, which can block water and gas to a certain extent, preventing gas from directly entering the water storage chamber 4 and carrying water again, and also preventing water from directly entering the gas circulation chamber due to shaking.

[0021] The bottom of the water storage chamber 4 is provided with a drain valve 15 and a drain outlet 16. When the water in the water storage chamber 4 is full, it can be discharged outward through the drain valve 15 and the drain outlet 16.

[0022] A pressure sensor 17 is installed on the side of the exhaust chamber 7, which can detect the gas pressure in the exhaust chamber.

[0023] The water distributor housing 1, horizontal partition 2, vertical partition 5, air inlet baffle 9, and exhaust baffle 11 are integrally formed.

[0024] Working principle:

[0025] The hydrogen-containing gas mixture discharged from the fuel cell stack first enters the intake chamber 6 through the hydrogen return inlet 8. Several downwardly inclined intake baffles 9 block the gas mixture, causing water vapor to condense into water droplets. The water droplets flow downward into the water storage chamber 4. Several steps 13 on the inner wall of the intake chamber 6 allow the gas mixture to collide again at the steps 13, thereby promoting gas-water separation. The gas mixture then enters the exhaust chamber 7 from the bottom of the gas circulation chamber. Several upwardly inclined exhaust baffles 11 block the gas mixture, and the barbs 12 can form vortices, which facilitate water vapor condensation into water droplets and flow into the water storage chamber 4. Several steps 13 on the inner wall of the exhaust chamber 7 also allow the gas mixture to collide again at the steps 13, thereby promoting gas-water separation. The gas after water separation is finally discharged from the hydrogen return outlet 10 to the hydrogen circulation pump, and then returned to the fuel cell system for recycling.

[0026] The above specific embodiments should not be construed as limiting the scope of protection of this utility model. For those skilled in the art, any alternative improvements or modifications made to the embodiments of this utility model shall fall within the scope of protection of this utility model.

[0027] Any aspects of this utility model not described in detail are known to those skilled in the art.

Claims

1. A water distributor suitable for high-power systems, characterized in that: The device includes a water separator housing. The water separator housing is divided into an upper gas circulation chamber and a lower water storage chamber by a horizontal partition at the bottom. The horizontal partition has several water leakage holes. The gas circulation chamber is divided into an air inlet chamber and an exhaust chamber by a vertical partition. The bottoms of the air inlet chamber and the exhaust chamber are connected. A hydrogen return inlet is provided on the upper part of one side of the air inlet chamber. Several downwardly inclined air inlet baffles are staggered on the side wall of the air inlet chamber. A hydrogen return outlet is provided at the top of the exhaust chamber. Several upwardly inclined exhaust baffles are staggered on the side wall of the exhaust chamber. The top of the exhaust baffles has downwardly curved barbs. The side walls of the air inlet chamber and the exhaust chamber are also provided with stepped structures.

2. A water distributor suitable for high-power systems according to claim 1, characterized in that: The stepped structure includes several steps of different heights located on the inner wall of the water distributor housing.

3. A water distributor suitable for high-power systems according to claim 1, characterized in that: A baffle plate is installed at the bottom of the horizontal partition.

4. A water distributor suitable for high-power systems according to claim 1, characterized in that: The bottom of the water storage chamber is equipped with a drain valve and a drain outlet.

5. A water distributor suitable for high-power systems according to claim 1, characterized in that: A pressure sensor is installed on the side of the exhaust chamber.

6. A water distributor suitable for high-power systems according to claim 1, characterized in that: The water distributor housing, horizontal partition, vertical partition, air inlet baffle, and exhaust baffle are integrally formed.

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