Fuel cell system with steam-water separation spraying device

Abstract

The utility model belongs to the field of fuel cells, and particularly relates to a fuel cell system with a steam-water separation spraying device. The system comprises a turbine recovery air compressor, an intercooler, a separation spraying device, an electric pile and an air exhaust pipe, the turbine recovery air compressor, the intercooler and a dry air inlet of the separation spraying device are connected in sequence; a humidified air outlet of the separation spraying device is connected with an air inlet of the electric pile; the outlet of the wet air after the galvanic pile reaction is connected with the wet air inlet of the separation spraying device, the outlet of the separated air of the separation spraying device is connected with the turbine recovery air compressor, and the turbine recovery air compressor is also connected with the air exhaust pipe. The battery system has the advantages of being high in integration level, low in manufacturing cost and high in reliability.

Description

TECHNICAL FIELD

[0001] The utility model belongs to fuel cell field, concretely relates to a fuel cell system with steam-water separation spraying device. BACKGROUND

[0002] Fuel cell is a kind of power generation device that converts the chemical energy in the fuel and oxidant supplied from outside into electric energy, heat energy and other reactants through electrochemical reaction, which contains electric pile, hydrogen subsystem, air subsystem, cooling subsystem, electrical subsystem and the like.

[0003] The humidifier and steam-water separator of the air path of the existing fuel cell system are separated, the integration degree is low, the space utilization is low, and the humidifier adopts membrane tube type, and the cost is higher.Therefore, the humidifier is changed to spray type in the patent, and the steam-water separator is integrated as a whole, and the water generated by fuel cell is fully utilized, so that the problems of high cost and low integration degree are solved. Figure 1 As shown in the following figure, the existing fuel cell humidifier adopts membrane tube type, dry air is cooled by intercooler, then enters the humidifier, is humidified by wet air from the electric pile, and then enters the electric pile to participate in the reaction.Wet air from the electric pile still contains a lot of water after humidifying dry air, and needs to pass through steam-water separator to further separate water, so that it can be used for turbine recovery air compressor, to avoid water droplets colliding with air compressor impeller and causing impeller damage. CONTENT OF THE UTILITY MODEL

[0004] The utility model overcomes the above-mentioned defects, and provides a fuel cell system with steam-water separation spraying device.The battery system has the advantages of high integration degree, low manufacturing cost and high reliability.

[0005] The utility model technical scheme is as follows.

[0006] A fuel cell system with steam-water separation spraying device, comprising a turbine recovery air compressor, an intercooler, a separation spraying device, an electric pile and an air tail pipe;The turbine recovery air compressor, the intercooler and the dry air inlet of the separation spraying device are sequentially connected;The humidified air outlet of the separation spraying device is connected with the air inlet of the electric pile;The wet air outlet after the electric pile reaction is connected with the wet air inlet of the separation spraying device, the separation spraying device separation air outlet is connected with the turbine recovery air compressor, and the turbine recovery air compressor is also connected with the air tail pipe.

[0007] Preferably, the separation spraying device is divided into steam-water separation chamber, water storage tank and spraying chamber from top to bottom;The steam-water separator drainage hole is communicated between the steam-water separation chamber and the water storage tank.

[0008] Preferably, the steam-water separation chamber is internally provided with vertical steam-water separation baffle.

[0009] Preferably, the steam-water separation baffle is alternatively connected to the upper wall surface and the lower wall surface of the steam-water separation chamber.

[0010] Preferably, the top of the spraying chamber is provided with a spraying device, which is communicated with the water storage tank.

[0011] Preferably, a damper is arranged on the pipeline between the wet air outlet of the separation spraying device and the electric pile.

[0012] Preferably, the side surface of the steam-water separation chamber is provided with a wet air inlet and a separated air outlet.

[0013] Preferably, the side surface of the spraying chamber is provided with a dry air inlet and a humidified air outlet.

[0014] Preferably, the bottom of the spraying chamber is provided with a drainage port.

[0015] Preferably, a drainage pipeline is connected to the drainage port, and a drainage valve is arranged on the drainage pipeline.

[0016] Compared with the prior art, the advantages of the utility model lie in that:

[0017] (1) The humidifier and the steam-water separator are integrated in the utility model, and the integration degree is high.

[0018] (2) The spraying humidifier is adopted in the utility model, and the manufacturing cost can be effectively reduced.

[0019] (3) The spraying humidifier and the steam-water separator are mature in technology, and the reliability is high, so that the failure rate can be effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural schematic view of a fuel cell system in the prior art;

[0021] Figure 2 It is a structural schematic view of a fuel cell system in the utility model.

[0022] Figure 3 It is a structural schematic view of a separation spraying device;

[0023] Figure 4 It is a connection view of the inlet and outlet of the separation spraying device.

[0024] The components in the drawing are as follows: a turbine recovery air compressor 1, an intercooler 2, a separation spraying device 3, an electric pile 4, an air tail discharge pipeline 5, a damper 6, a steam-water separation chamber 7, a steam-water separation baffle 8, a water storage tank 9, a spraying chamber 10, a steam-water separator drainage hole 11, a spraying device 12, a drainage valve 13, a wet air inlet a, a separated air outlet b, a dry air inlet c, and a humidified air outlet d. Detailed Implementation

[0025] The technical solutions described below, in conjunction with specific illustrations, are presented to provide a full understanding of this utility model application. However, this application can be implemented in many other ways different from those described herein, and similar extended embodiments made by those skilled in the art without inventive effort are all within the scope of protection of this utility model.

[0026] like Figure 2 As shown, this embodiment of a fuel cell system with a gas-water separation spray device includes a turbine recovery air compressor 1, an intercooler 2, a separation spray device 3, a fuel cell stack 4, and an air exhaust pipe 5. The turbine recovery air compressor 1, the intercooler 2, and the dry air inlet c of the separation spray device 3 are sequentially connected. In this embodiment, external air enters the system through the turbine recovery air compressor 1. The humidified air outlet d of the separation spray device 3 is connected to the air inlet of the fuel cell stack 4. The humidified air outlet of the fuel cell stack 4 after reaction is connected to the humidified air inlet a of the separation spray device 3. The separated air outlet b of the separation spray device 3 is connected to the turbine recovery air compressor 1. The turbine recovery air compressor 1 is also connected to the air exhaust pipe 5. Figure 3 As shown, in this embodiment, the separation spray device 3 is divided into a steam-water separation chamber 7, a water storage tank 9, and a spray chamber 10 from top to bottom; the steam-water separation chamber 7 and the water storage tank 9 are connected by a steam-water separator drain hole 11. A vertical steam-water separation baffle 8 is provided inside the steam-water separation chamber 7; the steam-water separation baffle 8 is alternately connected to the upper and lower walls of the steam-water separation chamber 7.

[0027] In this embodiment, a spraying device 12 is provided on the top of the spray chamber 10, and the spraying device 12 is connected to the water storage tank 9. In this embodiment, the spraying device 12 has a porous honeycomb structure, and its function is to allow the water storage tank 9 to spray into the spray chamber 10;

[0028] like Figure 1 As shown, in this embodiment, a throttle valve 6 is installed on the pipe between the humid air outlet of the separation spray device 3 and the fuel cell stack 4. Pressure sensors and temperature sensors are installed on both the air inlet pipe of the fuel cell stack 4 and the humid air outlet pipe after the reaction.

[0029] like Figure 3 As shown, the side of the air-water separation chamber 7 is provided with a humid air inlet a and a separated air outlet b; the side of the spray chamber 10 is provided with a dry air inlet c and a humidified air outlet d.

[0030] In this embodiment, a drain outlet is provided at the bottom of the spray chamber 10. The drain outlet is connected to a drain pipe, and a drain valve 13 is provided on the drain pipe.

[0031] like Figure 2As shown, the humidifier is changed to a spray type, and is integrated with a steam-water separator, the humidified air after reaction is discharged from the stack, passes through the steam-water separator, separates water, and is supplied to the spraying device.

[0032] The dry air is humidified and enters the stack for reaction, and the humidified air after separating water by the steam-water separator can be directly used for the turbine to recover the air compressor, and the excess water in the spraying device can be directly discharged.

[0033] As shown, Figure 4 As shown, the humidified air discharged from the stack passes through the steam-water separator baffle, and due to the collision principle, the water is separated and flows downward, enters the water storage tank through the steam-water separator drain hole, the accumulated water in the water storage tank is sprayed by the spraying device to humidify the dry air, and finally the remaining water is periodically discharged through the drain valve.

[0034] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and modify the above-mentioned embodiments within the scope of the utility model.

Claims

1. A fuel cell system with a gas-water separation spray device, characterized in that, It includes turbine recovery air compressor (1), intercooler (2), separation spray device (3), electric pile (4) and air tail pipe (5); the turbine recovery air compressor (1), intercooler (2) and the dry air inlet of separation spray device (3) are sequentially connected; the humidified air outlet of separation spray device (3) is connected with the air inlet of electric pile (4); the wet air outlet of electric pile (4) after reaction is connected with the wet air inlet of separation spray device (3), the separation air outlet of separation spray device (3) is connected with turbine recovery air compressor (1), and turbine recovery air compressor (1) is also connected with air tail pipe (5).

2. The fuel cell system with steam-water separation spraying device according to claim 1, wherein The separation spray device (3) is divided into steam-water separation chamber (7), water storage tank (9) and spray chamber (10) from top to bottom; the steam-water separator drain hole (11) is communicated between the steam-water separation chamber (7) and the water storage tank (9).

3. The fuel cell system with steam-water separation spraying device according to claim 2, wherein The steam-water separation chamber (7) is provided with vertical steam-water separation baffle (8) inside.

4. The fuel cell system with steam-water separation spraying device according to claim 3, wherein The steam-water separation baffle (8) is alternately connected to the upper wall surface and the lower wall surface of the steam-water separation chamber (7).

5. The fuel cell system with steam-water separation spraying device according to claim 2, wherein The top of the spray chamber (10) is provided with a spray device (12), and the spray device (12) is communicated with the water storage tank (9).

6. The fuel cell system with steam-water separation spraying device according to claim 1, wherein The pipe between the wet air outlet of the separation spray device (3) and the electric pile (4) is provided with a throttle (6).

7. The fuel cell system with steam-water separation spraying device according to claim 2, wherein The side of the steam-water separation chamber (7) is provided with a wet air inlet and a separated air outlet.

8. The fuel cell system with steam-water separation spraying device according to claim 2, wherein The side of the spray chamber (10) is provided with a dry air inlet and a humidified air outlet.

9. The fuel cell system with steam-water separation spraying device according to claim 2, wherein The bottom of the spray chamber (10) is provided with a drain hole.

10. The fuel cell system with steam-water separation spraying device according to claim 9, wherein The drain hole is connected with a drain pipe, and the drain pipe is provided with a drain valve (13).

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