CN214477568U

CN214477568U - Fuel cell humidifier integrated with steam-water separator

Info

Publication number: CN214477568U
Application number: CN202120705217.8U
Authority: CN
Inventors: 杨田明
Original assignee: Tianling Jiangsu Hydrogen Energy Technology Co ltd
Current assignee: Tianling Jiangsu Hydrogen Energy Technology Co ltd
Priority date: 2021-04-07
Filing date: 2021-04-07
Publication date: 2021-10-22
Anticipated expiration: 2031-04-07

Abstract

The utility model discloses an integrated fuel cell humidifier that has catch water, include humidifier body, first vapour and water separator and second vapour and water separator at least, wherein, the humidifier body is the same with traditional humidifier structure, is provided with moisture import and moisture export on the humidifier body respectively, and first vapour and water separator is integrated with the moisture import, and second vapour and water separator is integrated with the moisture export. The gas flowing into the humidifier is cooled and depressurized through the first steam-water separator, the relative humidity of the humidified gas flowing into the humidifier is increased, the humidification quantity of the humidifier is improved, and the moisture content and humidity of the humidified gas, namely the stack inlet gas, are further improved; the second catch water carries out catch water to the moisture that flows out the humidifier, and the moisture can flow to fuel cell system rear end expander or tail system of arranging, and liquid water can flow to liquid collection device etc. avoids additionally increasing second catch water ware, reduces the system integration level, avoids the hydrops of liquid water in the humidifier.

Description

Fuel cell humidifier integrated with steam-water separator

Technical Field

The utility model relates to a fuel cell system field specifically is an integrated fuel cell humidifier that has catch water.

Background

As a clean, environment-friendly and efficient energy conversion device, the fuel cell is more and more emphasized by various countries along with the gradual maturity of the fuel cell technology, and particularly, the fuel cell is rapidly developed in China, and the application range of the fuel cell is wider and wider. In a fuel cell, a humidifier is an important component for maintaining a constant humidity in a fuel cell stack, and the humidified gas is derived from an exhaust gas of the fuel cell stack, and the humidified gas is derived from an air compressor. The humidifier needs to humidify air entering the stack by using moisture discharged by the stack so as to meet the humidity environment required by efficient operation of the stack. In different working intervals of the galvanic pile, the flow, the temperature and the pressure of inlet air and exhaust air of the galvanic pile are changed, and the humidity of the inlet air, namely the wet outlet air of the humidifier, not only depends on the working efficiency of the humidifier, the temperature and the pressure of the inlet air, but also depends on the humidity of the humidified air generated by the galvanic pile, namely the wet inlet air of the humidifier. The ideal humidity requirement of the humidifier for the humidified gas is that the saturated gas, i.e. the relative humidity, reaches 100%, the closer the saturated gas is, the better the saturated gas is, however, the humidity of the humidified gas directly entering the humidifier moisture inlet is different in different working intervals, and the humidity of the humidified gas does not reach the ideal humidity state usually.

In addition, after the humidified gas enters the humidifier and is humidified, waste gas is discharged, but in some working areas, the humidity of the waste gas is still relatively high, which brings about two problems: (1) accumulated water is easy to form in the humidifier, (2) for a vehicle using a high-power fuel cell system, the tail gas of the vehicle needs energy recovery, and the waste gas with high humidity is easy to form liquid water if being supersaturated and enters the energy recoverer to cause negative effects.

Accordingly, those skilled in the art have been made in an effort to develop a fuel cell humidifier integrated with a steam separator to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned defect of prior art, the utility model aims to solve the technical problem that an integrated fuel cell humidifier that has catch water is provided, through setting up catch water in moisture import and moisture exit, improves the humidification volume of humidifier, reduces the hydrops in the humidifier, solves the problem in the background art.

In order to solve the problem, the utility model provides an integrated fuel cell humidifier that has catch water includes humidifier body, first vapour and water separator and second vapour and water separator at least, wherein, the humidifier body is the same with traditional humidifier structure be provided with moisture import and moisture export on the humidifier body respectively, first vapour and water separator with the moisture import is integrated, the second vapour and water separator with the moisture export is integrated, and the moisture is in moisture import department flows through earlier first vapour and water separator gets into this internal steam exchange tube bank of humidifier afterwards, passes through at last discharge behind the second vapour and water separator.

Furthermore, the first steam-water separator is externally of a tubular structure, a plurality of throttle plates are arranged in the tubular structure, and a plurality of throttle holes or throttle slits are formed in the throttle plates.

Further, a part of the tubular structure of the first steam-water separator, which is connected with the humidifier body, is provided with a fluid outlet, and fluid flowing through the first steam-water separator enters the humidifier body through the fluid outlet.

Further, the pressure drop of the first steam-water separator is between 2 and 20 kpa.

Furthermore, the outside of the second steam-water separator is arranged to be a funnel-shaped structure, a plurality of guide vanes are arranged inside the funnel-shaped structure, so that fluid entering the second steam-water separator forms a vortex, a liquid discharge port is arranged at the bottommost part of the funnel-shaped structure, and liquid after steam-water separation is discharged from the liquid discharge port.

Further, the funnel-shaped structure's of second steam-water separator tube-shape part is provided with the blast pipe, the blast pipe is the tubular structure, and its tubular structure's gas entry end is located inside the second steam-water separator, and its gas entry end is located guide vane top, gas outlet extend to the second steam-water separator is outside, process the gas vortex process that guide vane formed the blast pipe is discharged.

Furthermore, a liquid blocking net is arranged at the gas inlet end of the exhaust pipe, so that liquid in the fluid passing through the guide vanes is prevented from entering the exhaust pipe.

Further, the pressure drop of the second steam-water separator is between 0.5 and 15 kpa.

Through implementing the aforesaid the utility model provides an integrated fuel cell humidifier that has catch water has following technological effect:

(1) according to the technical scheme, the first steam-water separator is integrated at the moisture inlet (or the steam-water mixture inlet) of the humidifier, so that the temperature and the pressure of the gas flowing into the humidifier can be reduced, and the humidity of the humidified gas flowing into the humidifier can be increased;

(2) according to the technical scheme, the second steam-water separator is integrated at the moisture outlet of the humidifier, so that moisture flowing out of the humidifier can be subjected to steam-water separation and separated into moisture and liquid water, the moisture can flow to the rear-end expander or the tail exhaust system of the fuel cell system, the liquid water can flow to the liquid collecting device and the like, the second steam-water separator is prevented from being additionally added, the system integration level is reduced, and the cost is reduced;

(3) the waste gas that this technical scheme produced behind the humidifier removes water rapidly through second vapour-water separator, can avoid the hydrops of liquid water in the humidifier, can avoid the humidifier to add drainage device.

Drawings

The conception, the specific structure and the technical effects produced by the present invention will be further explained with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention:

FIG. 1 is a schematic diagram of a fuel cell integrated with a steam-water separator according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the first steam-water separator of FIG. 1;

FIG. 3 is a schematic view of the throttle plate of FIG. 2 illustrating the arrangement of orifices;

FIG. 4 is a schematic view of the throttle plate of FIG. 2 with a throttle slot;

FIG. 5 is a schematic diagram of the second steam-water separator of FIG. 1;

in the figure:

1. a humidifier body; 10. a wet gas inlet; 11. a moisture outlet; 12. a dry gas inlet; 13. a dry gas outlet; 14. a water vapor exchange tube bundle;

2. a first steam-water separator; 20. a throttle plate; 21. an orifice; 22. throttling the seam;

3. a second steam-water separator; 30. a guide vane; 31. a liquid discharge port; 32. an exhaust pipe; 33. a liquid blocking net.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The technical solution of the present invention will be described in detail with reference to the following examples.

As shown in fig. 1, the present embodiment provides a fuel cell humidifier integrated with a steam-water separator, which at least includes a humidifier body 1, a first steam-water separator 2 and a second steam-water separator 3, where the humidifier body 1 has the same structure as a conventional humidifier, the humidifier body 1 is respectively provided with a moisture inlet 10, a moisture outlet 11, a dry gas inlet 12 and a dry gas outlet 13, and a steam-water exchange tube bundle 14 is arranged inside the humidifier body 1 for steam-water exchange, as shown in the figure, the first steam-water separator 2 is integrated with the moisture inlet 10, the second steam-water separator 3 is integrated with the moisture outlet 11, and moisture enters the humidifier at the moisture inlet 10, flows through the first steam-water separator 2 first, then enters the steam-water exchange tube bundle 14 in the humidifier body 1, and finally is subjected to steam-water separation by the second steam-water separator 3 and then is discharged.

The following is a description based on the above structure:

as shown in fig. 2, the first steam-water separator is externally provided with a tubular structure, the inlet end of the tubular structure is a moisture inlet 10, the outlet end of the tubular structure is communicated with the humidifier body 1, a plurality of throttle plates 20 are arranged inside the tubular structure, a plurality of throttle holes 21 or throttle slits 22 are arranged on the throttle plates 20 as shown in fig. 3-4, and the throttle holes 21 or the throttle slits 22 can be arranged independently or can be combined together for use; at the outlet end of the tubular structure, a fluid outlet is provided through which fluid flowing through the first steam-water separator 2 enters the humidifier body 1.

Generally, it is preferable to provide 1 to 4 fluid outlets at which the entire moisture mixture passing through the first moisture separator 2 enters the humidifier body 1.

In other embodiments, the first steam-water separator 2 may adopt a centrifugal structure, a cyclone structure, a baffle structure, or the like, in addition to the structure of the throttle plate 20 adopted in the present embodiment.

Generally, it is preferred that the pressure drop across the first vapor-water separator is between 2 and 20 kpa.

As shown in fig. 5, the second steam-water separator 3 is externally provided with a funnel-shaped structure, a plurality of guide vanes 30 are arranged in the funnel-shaped structure, so that the fluid entering the second steam-water separator 3 forms a vortex, a liquid discharge port 31 is arranged at the bottommost part of the funnel-shaped structure, and the liquid after steam-water separation is discharged through the liquid discharge port 31; the exhaust pipe 32 is arranged in the cylindrical part of the funnel-shaped structure of the second steam-water separator, the exhaust pipe 32 is of a tubular structure, the gas inlet end of the tubular structure is located inside the second steam-water separator 3, the gas inlet end of the tubular structure is located above the guide vane 30, the gas outlet extends to the outside of the second steam-water separator 3, the gas vortex formed by the guide vane 30 is discharged through the exhaust pipe 32, the fluid flowing through the second steam-water separator 3 is divided into two fluids, one is the separated wet gas flow, one is the separated water flow, the two fluids cannot be mixed again, and the two fluids can flow out respectively.

The gas inlet end of the exhaust pipe 32 is provided with a liquid blocking net 33 to prevent liquid in the fluid passing through the guide vane 30 from entering the exhaust pipe 32.

The pressure drop of the second steam-water separator 3 is preferably between 0.5 and 15 kpa.

It should be added that unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The terms "connected" or "coupled" and the like as used in the description and the claims of the present application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "end", "side", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object to be described is changed, the relative positional relationships are changed accordingly.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any uses or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It is to be understood that the present invention is not limited to the structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. The utility model provides an integrated fuel cell humidifier that has catch water, its characterized in that includes humidifier body, first catch water and second catch water at least, wherein, the humidifier body is the same with traditional humidifier structure be provided with moisture import and moisture export on the humidifier body respectively, first catch water with the moisture import is integrated, second catch water with the moisture export is integrated.

2. The fuel cell humidifier integrated with a steam-water separator as claimed in claim 1, wherein the first steam-water separator is of a tubular structure, a plurality of throttle plates are arranged inside the tubular structure, and a plurality of throttle holes or throttle slits are arranged on the throttle plates.

3. The fuel cell humidifier integrated with a steam-water separator according to claim 2, wherein a portion of the tubular structure of the first steam-water separator, which is connected to the humidifier body, is provided with a fluid outlet through which the fluid flowing through the first steam-water separator enters the humidifier body.

4. The fuel cell humidifier integrated with a steam-water separator according to claim 3, wherein the pressure drop of the first steam-water separator is between 2 kpa and 20 kpa.

5. The fuel cell humidifier integrated with a steam-water separator as claimed in claim 1, wherein a funnel-shaped structure is provided outside the second steam-water separator, a plurality of guide vanes are provided inside the funnel-shaped structure, so that a fluid entering the second steam-water separator forms a vortex, a drain outlet is provided at the bottommost part of the funnel-shaped structure, and the liquid after steam-water separation is discharged through the drain outlet.

6. The humidifier for fuel cell with integrated steam-water separator as claimed in claim 5, wherein an exhaust pipe is disposed in the cylindrical portion of the funnel-shaped structure of the second steam-water separator, the exhaust pipe is a tubular structure, the gas inlet end of the tubular structure is located inside the second steam-water separator, the gas inlet end of the tubular structure is located above the guide vanes, the gas outlet extends to the outside of the second steam-water separator, and the gas vortex formed by the guide vanes is discharged through the exhaust pipe.

7. The humidifier for a fuel cell integrated with a steam-water separator according to claim 6, wherein a gas inlet end of the exhaust pipe is provided with a liquid blocking net to prevent liquid in the fluid passing through the guide vanes from entering the exhaust pipe.

8. The fuel cell humidifier integrated with a steam-water separator according to claim 7, wherein the pressure drop of the second steam-water separator is between 0.5 kpa and 15 kpa.