Gas-liquid separator for fuel cell

Abstract

The utility model relates to the technical field of gas-liquid separators, in particular to a gas-liquid separator for a fuel cell, which comprises an air chamber, a water storage chamber, an isolation plate and a drain valve, the water storage chamber is positioned below the air chamber, and the isolation plate is fixedly connected between the air chamber and the water storage chamber; an air inlet is formed in one side of the air chamber, an air outlet is formed in the other side of the air chamber, and a plurality of groups of air water diversion baffles are arranged in the air chamber and are connected to the upper part of the air chamber and the upper part of the isolation plate through a plurality of bolts respectively. According to the fuel cell stack, the fuel cell stack which can be adapted to equipment is large in power range, high in universality, reasonable in structural design, close in matching of parts, simple in production process and capable of reducing production cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gas-liquid separator, specifically relates to a gas-liquid separator for fuel cell. BACKGROUND

[0002] The hydrogen fuel cell system in fuel cell is composed of hydrogen fuel cell stack, hydrogen supply system, air supply system, water thermal management system and electric control system, and the gas-liquid separator belongs to the component in the air supply system and is mainly used for separating gas and liquid in the fuel cell. Fuel cell usually generates certain moisture in the working process, and the moisture mixes with gas flow, if not handled, not only has the risk of icing in winter, but also has negative influence on the expander when matching high-power electric pile, and influences the efficiency and life of the whole fuel cell system.

[0003] The prior art still has the following to be improved: the existing gas-liquid separator can adapt to a small fuel cell stack power range, has low universality, and has complex equipment structure, many production procedures and high production cost. UTILITY MODEL CONTENT

[0004] To solve the above problems in the prior art, the utility model provides a gas-liquid separator for fuel cell, which can adapt to a large fuel cell stack power range, has high universality, reasonable structure design, close cooperation between parts, simple production procedure and reduced production cost.

[0005] The purpose of the utility model can be realized through the following technical schemes.

[0006] A gas-liquid separator for fuel cell, comprising an air chamber, a water storage chamber, a partition plate and a drain valve, the water storage chamber is located below the air chamber, the partition plate is fixedly connected between the air chamber and the water storage chamber;

[0007] One side of the air chamber is provided with an air inlet, the other side of the air chamber is provided with an air outlet, the inside of the air chamber is provided with a plurality of air water separation baffles, and the plurality of air water separation baffles are connected to the upper part of the air chamber and the upper part of the partition plate through a plurality of bolts respectively;

[0008] The water storage chamber is provided with a drain port, and the drain valve is fixedly connected below the water storage chamber.

[0009] Preferably, the air chamber is provided with a bypass port and a nitrogen gas discharge port, and the position of the nitrogen gas discharge port corresponds to the position of the drain port.

[0010] Preferably, the plurality of air water separation baffles are arranged in an up-and-down staggered and uniform distribution mode, and the air water separation baffles are arranged in an L-shaped mode.

[0011] Preferably, the L-shaped vertical section of the air water separation baffle is arranged in an inclined manner, and the included angle between the L-shaped vertical section and the horizontal section of the air water separation baffle is arranged to be 110°-120°.

[0012] Preferably, one end of the L-shaped vertical section of each of the plurality of air water separation baffles is located on the central axis of the air chamber.

[0013] Preferably, the isolation plate is provided with a second through hole and a plurality of first through holes, the positions of the first through holes correspond to the positions of the air water separation baffles, and the first through holes are arranged in a tapered manner.

[0014] Preferably, the lower part of the water storage chamber is provided with an inclined section.

[0015] Preferably, sealing rings are arranged between the air chamber and the isolation plate and between the water storage chamber and the isolation plate.

[0016] The utility model discloses the beneficial effects are:

[0017] (1) through setting up air chamber and isolation plate, the technical effect that can reach is that a plurality of air water separation baffles are connected to the upper part of air chamber and the upper part of isolation plate through a plurality of bolts respectively, the interval and the number of air water separation baffle are adjusted conveniently according to fuel cell stack power range, and the number used generally is 7-10 pieces, and the power that can be adapted is 5-200kW, and the versatility is high, nitrogen gas is discharged to the nitrogen gas interface arranged on the air chamber, nitrogen gas is prevented from entering subsequent reaction along with separated air, the performance and safety of fuel cell are influenced, sealing rings are arranged between the air chamber and the isolation plate and between the water storage chamber and the isolation plate, the air tightness of equipment is guaranteed, the equipment structure design is reasonable, the parts are closely matched, the production procedure is simple, and the production cost is reduced.

[0018] (2) through setting up water storage chamber, the technical effect that can reach is that the water storage chamber is provided with a drain, the liquid capacity in the water storage chamber is monitored, when the liquid capacity in the water storage chamber approaches saturation, the drainage is assisted, the drainage efficiency is improved, the lower part of the water storage chamber is provided with an inclined section, the flow guiding effect is played, the liquid is completely drained, and the water remaining at low temperature is prevented from being frozen.

[0019] (3) by setting air chamber and isolation plate, the technical effect that can be reached is that the liquid in the air is intercepted by the air water baffle and can be condensed and collected at the L-shaped vertical section of the air water baffle, and the L-shaped vertical section of the air water baffle is inclined to play a flow guiding effect, so that the liquid can flow down to the water storage chamber, which plays a good water separation effect, one end of the L-shaped vertical section of the air water baffle is on the central axis of the air chamber, the water separation effect is improved, the second through hole and the plurality of first through holes on the isolation plate facilitate the separated liquid to be discharged into the water storage chamber through the first through hole and the second through hole. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to facilitate those skilled in the art to understand, the utility model will be further described below in combination with the drawings.

[0021] Figure 1 It is a perspective view of the utility model;

[0022] Figure 2 It is a front view of the utility model;

[0023] Figure 3 It is a left view of the utility model;

[0024] Figure 4 It is a first sectional view of the utility model;

[0025] Figure 5 It is a second sectional view of the utility model;

[0026] Main element symbol explanation:

[0027] In the drawing: 1, air chamber; 101, first through hole; 102, second through hole; 2, water storage chamber; 3, air inlet; 4, air outlet; 5, drain valve; 6, bypass; 7, nitrogen gas discharge interface; 8, drain; 9, isolation plate; 10, sealing ring; 11, air water baffle; 12, bolt. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application; Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments; Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0029] In the description of the present application, it should be pointed out that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present application, it should be pointed out that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be broadly understood, for example, "connected" can be fixedly connected, can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] Referring to Figures 1 to 5 The utility model discloses a kind of gas-liquid separators for fuel cell, including air chamber 1, water storage chamber 2, isolation plate 9 and drain valve 5, water storage chamber 2 is below air chamber 1, isolation plate 9 is fixedly connected between air chamber 1 and water storage chamber 2;

[0032] Air chamber 1 side is provided with air inlet 3, and the other side of air chamber 1 is provided with air outlet 4, and a plurality of air water baffle plates 11 are arranged in the air chamber 1, and the plurality of air water baffle plates 11 are connected to the upper part of the air chamber 1 and the upper part of the isolation plate 9 by a plurality of bolts 12, so as to adjust the spacing and the number of the air water baffle plates 11 according to the power range of the fuel cell stack, and the number used is generally 7-10 pieces, and the power that can be adapted is 5-200kW, and the versatility is high.

[0033] Referring to Figures 1 to 5 Water outlet 8 is arranged on water storage chamber 2, so as to monitor the liquid capacity in water storage chamber 2, and when the liquid capacity in water storage chamber 2 is close to saturation, drainage can be assisted, so as to improve the drainage efficiency, and the drain valve 5 is fixedly connected below the water storage chamber 2; bypass port 6 and nitrogen discharge port 7 are arranged on air chamber 1, the position of the nitrogen discharge port 7 corresponds to the position of the water outlet 8, nitrogen is discharged by arranging the nitrogen discharge port 7, so as to prevent nitrogen from entering the subsequent reaction together with the separated air, and affect the performance and safety of the fuel cell; the lower part of the water storage chamber 2 is provided with an inclined section, which plays a flow guiding effect, so as to completely drain the liquid, and prevent the remaining water from being frozen at low temperature; sealing rings 10 are arranged between the air chamber 1 and the isolation plate 9 and between the water storage chamber 2 and the isolation plate 9, so as to ensure the air tightness of the equipment.

[0034] Referring to Figure 4 and Figure 5 The plurality of air water separation baffles 11 are arranged in an up-and-down staggered and uniform distribution, and the air water separation baffles 11 are arranged in an L shape; the L-shaped vertical section of the air water separation baffles 11 is arranged in an inclined manner, and the included angle between the L-shaped vertical section and the horizontal section of the air water separation baffles 11 is arranged to be 110°-120°, so that the liquid in the air can be condensed and collected at the L-shaped vertical section of the air water separation baffles 11 after being intercepted by the air water separation baffles 11, and the L-shaped vertical section of the air water separation baffles 11 is arranged in an inclined manner to play a flow guiding effect, so that the liquid can be completely circulated downward to the water storage chamber 2, thereby playing a good water separation effect; one end of the L-shaped vertical section of the plurality of air water separation baffles 11 is located on the central axis of the air chamber 1, thereby improving the water separation effect.

[0035] Referring to Figure 4 and Figure 5 The isolation plate 9 is provided with a second through hole 102 and a plurality of first through holes 101, the positions of the first through holes 101 correspond to the positions of the air water separation baffles 11, and the first through holes 101 are arranged in a conical shape, so as to facilitate the separated liquid to be completely discharged into the water storage chamber 2 through the first through holes 101 and the second through hole 102.

[0036] The device has a reasonable structure design, a close cooperation between parts, a good gas-liquid separation effect, a convenience for adjusting the spacing and the number of the air water separation baffles 11 according to the fuel cell stack power range, an ability to adapt to fuel cells of different powers, a high universality, a simple production process, and a reduced production cost.

[0037] The working principle and the use process of the utility model are as follows: the air after the fuel cell reaction enters the air chamber 1 through the air inlet 3, the liquid in the air is intercepted by the air water separation baffles 11 and condensed at the air water separation baffles 11 to flow downward to the water storage chamber 2 through the first through holes 101 and the second through hole 102 for gas-liquid separation, and the remaining stack air is discharged through the air outlet 4.

[0038] When the amount of liquid in the water storage chamber 2 approaches saturation: open the drain valve 5, the liquid is discharged from the water storage chamber 2 through the drain valve 5, and the lower part of the water storage chamber 2 is provided with an inclined section, so as to completely discharge the liquid and prevent the remaining water from being frozen at low temperature.

[0039] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with preferred embodiments, it is not intended to limit the present application. Any person skilled in the art can make minor changes or modifications to the disclosed technical content, or make equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any modification, equivalent change or modification of the above embodiments, which does not depart from the technical solution of the present application, is still within the scope of the technical solution of the present application.

Claims

1. A gas-liquid separator for a fuel cell, characterized in that: It includes an air chamber (1), a water storage chamber (2), an isolation plate (9), and a drain valve (5). The water storage chamber (2) is located below the air chamber (1), and the isolation plate (9) is fixedly connected between the air chamber (1) and the water storage chamber (2). An air inlet (3) is provided on one side of the air chamber (1), and an air outlet (4) is provided on the other side of the air chamber (1). Multiple sets of air-water separating baffles (11) are provided inside the air chamber (1). The multiple sets of air-water separating baffles (11) are connected to the upper part of the air chamber (1) and the upper part of the isolation plate (9) respectively by multiple bolts (12). The water storage chamber (2) is provided with a drain outlet (8), and the drain valve (5) is fixedly connected to the bottom of the water storage chamber (2).

2. A gas-liquid separator for a fuel cell according to claim 1, characterized in that: The air chamber (1) is provided with a bypass port (6) and a nitrogen exhaust port (7), the position of the nitrogen exhaust port (7) and the position of the drain port (8) are corresponding.

3. A gas-liquid separator for a fuel cell according to claim 1, characterized in that: Multiple sets of air-water-distributing baffles (11) are arranged in an alternating pattern, and the air-water-distributing baffles (11) are arranged in an L-shape.

4. A gas-liquid separator for a fuel cell according to claim 3, characterized in that: The L-shaped vertical section of the air water separator (11) is inclined, and the angle between the L-shaped vertical section and the horizontal section of the air water separator (11) is set to 110°-120°.

5. A gas-liquid separator for a fuel cell according to claim 4, characterized in that: One end of the L-shaped vertical section of each of the multiple sets of air-water-dividing baffles (11) is located on the central axis of the air chamber (1).

6. A gas-liquid separator for a fuel cell according to claim 1, characterized in that: The isolation plate (9) is provided with a second through hole (102) and a plurality of first through holes (101). The position of the first through hole (101) corresponds to the position of the air-water separating baffle (11). The first through hole (101) is tapered.

7. A gas-liquid separator for a fuel cell according to claim 1, characterized in that: The lower part of the water storage chamber (2) is provided with an inclined section.

8. A gas-liquid separator for a fuel cell according to claim 1, characterized in that: A sealing ring (10) is provided between the air chamber (1) and the isolation plate (9) and between the water storage chamber (2) and the isolation plate (9).

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