CN215070072U

CN215070072U - Gas-liquid separator for hydrogen fuel cell stack

Info

Publication number: CN215070072U
Application number: CN202120414141.3U
Authority: CN
Inventors: 不公告发明人
Original assignee: Shanghai Platform For Smart Manufacturing Co Ltd
Current assignee: Shanghai Platform For Smart Manufacturing Co Ltd
Priority date: 2021-02-25
Filing date: 2021-02-25
Publication date: 2021-12-07
Anticipated expiration: 2031-02-25

Abstract

The utility model relates to a vapour and liquid separator for hydrogen fuel cell stack, including box, air inlet, gas outlet and delivery port, the air inlet is located the front end of box, the gas outlet is located the rear end top of box, the delivery port is located the rear end bottom of box, be equipped with the manger plate baffle in the box, go up baffle and lower baffle promptly, go up the roof that the box is connected to the baffle, the bottom plate of box is connected to lower baffle, go up the baffle and crisscross formation gas passage that sets up of baffle down, it has through-hole and guiding gutter to distribute on the manger plate baffle, and the guiding gutter distributes in one side of manger plate baffle towards the air inlet, the bottom plate upper surface of box is the slope, the bottom of baffle is equipped with the slotted hole down. Compared with the prior art, the utility model has the advantages of the structure is miniaturized, gas-liquid separation is efficient.

Description

Gas-liquid separator for hydrogen fuel cell stack

Technical Field

The utility model belongs to the technical field of hydrogen fuel cell and specifically relates to a vapour and liquid separator for hydrogen fuel cell stack is related to.

Background

In order to facilitate the recycling of the reacted gas of the hydrogen fuel cell, a gas-liquid separator is usually disposed at the anode outlet side of the hydrogen fuel cell stack. However, the existing gas-liquid separator is complex in structure, large in volume and low in gas-liquid separation efficiency.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a gas-liquid separator for a hydrogen fuel cell stack, which overcomes the above-mentioned drawbacks of the prior art.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides a vapour and liquid separator for hydrogen fuel cell stack, includes box, air inlet, gas outlet and delivery port, the air inlet is located the front end of box, the gas outlet is located the rear end top of box, the delivery port is located the rear end bottom of box, be equipped with the manger plate baffle in the box, go up baffle and lower baffle promptly, the roof of box is connected to the last baffle, the bottom plate of box is connected to lower baffle, go up the baffle and crisscross the setting formation gas passage of baffle down, it has through-hole and guiding gutter to distribute on the manger plate baffle, and the guiding gutter distributes in the one side of manger plate baffle towards the air inlet, the bottom plate upper surface of box is the slope, the bottom of baffle is equipped with the slotted hole down.

Further, the through holes in the water retaining partition plate are arranged in a matrix mode, the flow guide grooves comprise perpendicular line grooves, and the through holes in the same row are communicated through one perpendicular line groove.

Further, the guiding gutter still includes the oblique line groove, and perpendicular line groove still distributes between two adjacent through-holes, the one end intercommunication through-hole of oblique line groove, the perpendicular line groove is connected to the other end downward sloping.

Further, the diameter of the through hole is 1-5 mm.

Furthermore, the water baffle plate is made of a red copper plate, an aluminum alloy plate, a graphene plate, a carbon fiber plate or a carbon composite material plate.

Furthermore, the inner wall of the box body and the water baffle are both provided with hydrophobic medium coatings.

Further, the hydrophobic medium coating adopts an epoxy resin coating, an alkyd resin coating, a polyurethane coating or a fluorocarbon resin coating.

Further, the thickness of the water retaining partition plate is 2-3 mm.

Furthermore, the box body consists of a cover plate and a base, and the cover plate and the base are fixed through bolts.

Furthermore, the cover plate is a top plate of the box body, the upper partition plate is connected with the cover plate, and the air outlet is formed in the cover plate.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses an arrange crisscross manger plate baffle in the box and form gas passage, fully improved the limited space utilization in the box, be favorable to the structure miniaturization. And simultaneously, the utility model discloses set up through-hole and guiding gutter on the baffle for the disturbance of reinforcing baffle surface fluid and the heat transfer of reinforcing fluid and solid wall improve the efficiency of liquid condensation, improve gas-liquid separation's efficiency promptly.

2. The arrangement of the through holes on the water retaining partition plate can also increase the momentum loss of the gas flowing through the water retaining partition plate, so that the liquid in the gas is easier to condense to form liquid beads, and the efficiency of liquid precipitation is improved.

3. Hydrophobic medium coatings are arranged on the inner wall of the box body and the water retaining partition plates, so that the condensation effect of water condensation is further improved, large liquid beads are easily gathered and fall down along the diversion trench under the action of gravity, and the separation efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic sectional view A-A of FIG. 1.

FIG. 3 is a schematic sectional view B-B of FIG. 1.

Fig. 4 is a partially enlarged structural view of the water baffle.

FIG. 5 is a schematic cross-sectional view of C-C of FIG. 4.

Reference numerals: 1. the water-saving water tank comprises a tank body, 11, a cover plate, 12, a base, 2, an air inlet, 3, an air outlet, 4, a water outlet, 5, a water retaining partition plate, 5a, an upper partition plate, 5b, a lower partition plate, 51, a through hole, 52, a diversion trench, 521, a vertical line trench, 522, an inclined line trench, 53 and a slotted hole.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

As shown in fig. 1 to 3, the present embodiment provides a gas-liquid separator for a hydrogen fuel cell stack, which includes a tank 1, an air inlet 2, an air outlet 3, and a water outlet 4. The box body 1 is composed of a cover plate 11 and a base 12 with an opening at the top, and the cover plate 11 and the base 12 are fixed through bolts. The air inlet 2 is positioned at the bottom of the front end of the box body 1 and is horizontal in direction; the air outlet 3 is positioned at the top of the rear end of the box body 1 and faces upwards; the water outlet 4 is positioned at the bottom of the rear end of the box body 1 and faces downwards. A plurality of water retaining partition plates 5, namely an upper partition plate 5a and a lower partition plate 5b, are arranged in the box body 1. The upper baffle 5a is connected with the top plate of the box body 1, the lower baffle 5b is connected with the bottom plate of the box body 1, and the baffles and the lower baffles 5b are arranged in a staggered mode to form a gas channel. The upper surface of the bottom plate of the box body 1 is a slope surface and is arranged from the air inlet 2 to the water outlet 4 in a downward inclined mode. The bottom of the lower partition 5b is provided with a slot 53 for passing the condensed water flowing on the slope.

As shown in fig. 2 and 4, the water-blocking partition 5 is distributed with through holes 51 and guiding grooves 52, and the guiding grooves 52 are distributed on one side of the water-blocking partition 5 facing the air inlet 2. The through holes 51 on the water baffle plate 5 are arranged in a matrix form, the diversion trench 52 comprises a vertical line trench 521 and an inclined line trench 522, and the through holes 51 in the same row are communicated with one vertical line trench 521. Meanwhile, the vertical line grooves 521 are distributed between two adjacent columns of through holes 51, one end of the inclined line groove 522 is communicated with the through holes 51, and the other end of the inclined line groove is connected with the vertical line groove 521 in a downward inclined mode. The diameter of the through hole 51 is generally 1-5 mm, the preferred 3mm of this embodiment, and the setting of through hole 51 can increase the momentum loss of the gas that flows through water-retaining baffle 5, makes the liquid in the gas easier to condense and forms the liquid bead, improves the efficiency that liquid appeared. The water retaining partition plate 5 can be made of red copper plates, aluminum alloy plates, graphene plates, carbon fiber plates or carbon composite plates, the thickness is generally 2-3 mm, the red copper plates are preferably selected in the embodiment, and the thickness is 2 mm. The inner wall of the box body 1 and the water baffle plate 5 are both provided with hydrophobic medium coatings, the hydrophobic medium coatings can adopt epoxy resin coatings, alkyd resin coatings, polyurethane coatings or fluorocarbon resin coatings, and the epoxy resin coatings are preferably selected in the embodiment. The hydrophobic medium coating improves the condensation effect of water condensation, is easy to gather into large liquid beads, falls down along with the diversion trench 52 under the action of gravity, and improves the separation efficiency.

In this embodiment, the cover plate 11 is a top plate of the box body 1, and the upper partition plate 5a and the air outlet 3 are both disposed on the cover plate 11. When the cover plate 11 is separated from the base 12, the upper partition plate 5a and the lower partition plate 5b are naturally separated, so that the cleaning and maintenance are convenient.

The working principle of the embodiment is as follows:

the hydrogen fuel cell anode off-gas flows into the tank 1 from the gas inlet 2. When the exhaust gas (high-temperature wet hydrogen) reaches the surface of the low-temperature water-retaining partition plate 5, water vapor is condensed. The smaller liquid drops are agglomerated into larger liquid drops and discharged from the water outlet under the action of gravity. The dehumidified hydrogen gas is exhausted from the upper exhaust port.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. A gas-liquid separator for a hydrogen fuel cell stack comprises a box body (1), a gas inlet (2), a gas outlet (3) and a water outlet (4), and is characterized in that the gas inlet (2) is positioned at the front end of the box body (1), the gas outlet (3) is positioned at the top of the rear end of the box body (1), the water outlet (4) is positioned at the bottom of the rear end of the box body (1), a water-retaining partition plate (5), namely an upper partition plate (5a) and a lower partition plate (5b), is arranged in the box body (1), the upper partition plate (5a) is connected with a top plate of the box body (1), the lower partition plate (5b) is connected with a bottom plate of the box body (1), the upper partition plate (5a) and the lower partition plate (5b) are arranged in a staggered manner to form a gas channel, through holes (51) and diversion trenches (52) are distributed on the water-retaining partition plate (5), and the diversion trenches (52) are distributed on one side, facing the gas inlet (2), of the water-retaining partition plate (5), the upper surface of the bottom plate of the box body (1) is a slope surface, and the bottom of the lower partition plate (5b) is provided with a slotted hole (53).

2. The gas-liquid separator for the hydrogen fuel cell stack according to claim 1, wherein the through holes (51) of the water-blocking partition plate (5) are arranged in a matrix form, the guide grooves (52) comprise vertical line grooves (521), and the through holes (51) in the same row are communicated through one vertical line groove (521).

3. The gas-liquid separator for the hydrogen fuel cell stack as claimed in claim 2, wherein the flow guide groove (52) further comprises an inclined line groove (522), the vertical line groove (521) is further distributed between two adjacent rows of through holes (51), one end of the inclined line groove (522) is communicated with the through holes (51), and the other end of the inclined line groove (522) is connected with the vertical line groove (521) in a downward inclined manner.

4. The gas-liquid separator for a hydrogen fuel cell stack according to claim 1, wherein the diameter of the through hole (51) is 1 to 5 mm.

5. The gas-liquid separator for a hydrogen fuel cell stack according to claim 1, wherein the water-blocking partition plate (5) is a copper plate, an aluminum alloy plate, a graphene plate, a carbon fiber plate or a carbon composite plate.

6. The gas-liquid separator for the hydrogen fuel cell stack according to claim 1, wherein the inner wall of the tank body (1) and the water-blocking partition plate (5) are provided with a hydrophobic medium coating.

7. The gas-liquid separator for a hydrogen fuel cell stack according to claim 6, wherein said hydrophobic medium coating is an epoxy resin coating, an alkyd resin coating, a polyurethane coating or a fluorocarbon resin coating.

8. The gas-liquid separator for a hydrogen fuel cell stack according to claim 1, wherein the water-blocking partition has a thickness of 2 to 3 mm.

9. The gas-liquid separator for a hydrogen fuel cell stack according to claim 1, wherein the case (1) is composed of a cover plate (11) and a base (12), and the cover plate (11) and the base (12) are fixed by bolts.

10. The gas-liquid separator for a hydrogen fuel cell stack according to claim 9, wherein the cover plate (11) is a top plate of the housing (1), the upper partition plate (5a) is connected to the cover plate (11), and the gas outlet (3) is provided in the cover plate (11).