CN-224217475-U - Integrated structure of hydrogen fuel cell ejector and steam-water separator

CN224217475UCN 224217475 UCN224217475 UCN 224217475UCN-224217475-U

Abstract

The utility model relates to an integrated structure of a hydrogen fuel cell ejector and a steam-water separator, which comprises a shell, wherein a snake-shaped coil pipe serving as an ejector pipeline is arranged in the shell, the snake-shaped coil pipe is provided with four vertical sections which are formed by vertically bending the inside of the shell, the four vertical sections form a water baffle for realizing steam-water separation, one end of the snake-shaped coil pipe is filled with fluid in a hydrogen storage tank, the other end of the snake-shaped coil pipe is connected with a nozzle for injecting the fluid into a hydrogen reactor.

Inventors

ZHU ZHIHONG
You Liting
XIE FENG
Wang Luding
QIU YUXIN
SONG JINGHUI
ZHOU SHAODONG
LIU SHUANG

Assignees

常州信息职业技术学院

Dates

Publication Date: 20260508
Application Date: 20250310

Claims (4)

1. The integrated structure of the hydrogen fuel cell ejector and the steam-water separator is characterized by comprising a shell (1), wherein a serpentine coil pipe (2) is arranged in the shell (1), the serpentine coil pipe (2) is provided with a water baffle which is vertically bent towards the inside of the shell (1) to form steam-water separation, the upper end face of the shell (1) is connected with a first liquid inlet pipe (3) for receiving fluid flowing out of a hydrogen storage tank, one end of the serpentine coil pipe (2) is vertically upwards connected with the first liquid inlet pipe (3), the other end of the serpentine coil pipe (2) horizontally extends out of the right side wall of the shell (1) to the right and is connected with a nozzle (4) for injecting the fluid into a hydrogen reactor, the upper part of the left side wall of the shell (1) is connected with a second liquid inlet pipe (5) for accessing secondary fluid discharged by the hydrogen reactor, a water outlet (6) for discharging the separated water drops out of the shell (1) is arranged on the bottom wall on the right side of the shell (1), and a mixing chamber (7) for covering the nozzle (4) is arranged on the right side wall of the shell (1).
2. The integrated structure of the ejector and the steam-water separator of the hydrogen fuel cell according to claim 1, wherein the serpentine coil (2) is formed by sequentially connecting a first coil (2-1), a second coil (2-2), a third coil (2-3) and a fourth coil (2-4), one side of the first coil (2-1) is connected with the first liquid inlet pipe (3) side by side to form a first water baffle (8-1), the other side of the first coil (2-1) is connected with one side of the second coil (2-2) side by side to form a second water baffle (8-2), the other side of the second coil (2-2) is connected with one side of the third coil (2-3) side by side to form a third water baffle (8-3), the other side of the third coil (2-3) is connected with one side of the fourth coil (2-4) side by side to form a fourth water baffle (8-4), and the other side of the fourth coil (2-4) is connected with the nozzle (4) through a straight pipe.
3. The integrated structure of the ejector and the steam-water separator for the hydrogen fuel cell according to claim 2, wherein the first water baffle (8-1) and the second water baffle (8-2) are vertically downward, the third water baffle (8-3) and the fourth water baffle (8-4) are vertically upward, the first water baffle (8-1) is positioned on the right side of the shell (1), the third water baffle (8-3) is positioned on the left side of the shell (1), the second water baffle (8-2) is positioned between the third water baffle (8-3) and the fourth water baffle (8-4), and the fourth water baffle (8-4) is positioned between the first water baffle (8-1) and the second water baffle (8-2).
4. The integrated structure of the hydrogen fuel cell ejector and the steam-water separator according to claim 1, wherein the inner bottom surface of the shell (1) is an inclined surface inclined from left to right, and the water outlet (6) is arranged on the bottom wall of the shell (1) at the lowest end of the inclined surface.

Description

Integrated structure of hydrogen fuel cell ejector and steam-water separator Technical Field The utility model relates to the technical field of hydrogen energy, in particular to an integrated structure of a hydrogen fuel cell ejector and a steam-water separator. Background In the working process of the hydrogen fuel cell, unreacted hydrogen needs to pass through a steam-water separator before being circulated back to a hydrogen inlet, and mixed liquid water is removed by utilizing a plurality of layers of baffles arranged in the steam-water separator to prevent the liquid water from entering a pile, blocking a gas diffusion layer and causing flooding to influence the normal operation of the fuel cell pile, and meanwhile, a pipeline-shaped ejector is configured to carry out backflow and pressure control so as to generate a mixed fluid with pressure higher than low-pressure suction fluid but lower than high-pressure movement fluid, and the mixed fluid is accelerated into high-speed fluid through a nozzle to enter the pile for reaction. In the prior art, the water-vapor separation is realized by arranging the baffles which are arranged at intervals in the water-vapor separator, but because the water-vapor separator is connected with the ejector through the pipeline, the flow in the flowing process can cause larger flow resistance to the fluid, and meanwhile, the ejector pipeline is required to be independently provided with the heating device for heating, so that the split type structure occupies larger space, the fluid separated by the water-vapor separator is directly discharged out of the separator, and the heat utilization rate of the whole system is lower. Disclosure of utility model The utility model aims to solve the technical problem of overcoming the defects in the prior art, and provides the integrated structure of the hydrogen fuel cell ejector and the steam-water separator, which has compact structure, is favorable for reducing flow resistance and improving heat utilization rate. The technical scheme includes that the integrated structure of the hydrogen fuel cell ejector and the steam-water separator comprises a shell, wherein a serpentine coil is arranged in the shell, the serpentine coil is provided with a water baffle which is vertically bent towards the inside of the shell to form steam-water separation, the upper end face of the shell is connected with a first liquid inlet pipe which is used for receiving fluid flowing out of a hydrogen storage tank, one end of the serpentine coil is vertically upwards connected with the first liquid inlet pipe, the other end of the serpentine coil horizontally stretches out of the right side wall of the shell to the right and is connected with a nozzle which is used for injecting the fluid into a hydrogen reactor, the upper part of the left side wall of the shell is connected with a second liquid inlet pipe which is used for accessing secondary fluid discharged by the hydrogen reactor, a water outlet which is used for discharging separated water drops out of the shell is formed in the bottom wall of the right side of the shell, and a mixing chamber which is used for covering the nozzle is arranged on the right side wall of the shell. The snakelike coil pipe constitute by first coil pipe, second coil pipe, third coil pipe and fourth coil pipe connection in proper order, first coil pipe one side constitutes first breakwater with first feed liquor pipe side by side, first coil pipe another side constitutes the second breakwater with second coil pipe one side by side, second coil pipe another side constitutes the third breakwater with third coil pipe one side by side, third coil pipe another side constitutes the fourth breakwater with fourth coil pipe one side by side, the fourth coil pipe another side passes through the straight tube and is connected with the nozzle. The first breakwater and the second breakwater are vertically downward, the third breakwater and the fourth breakwater are vertically upward, the first breakwater is positioned on the right side of the shell, the third breakwater is positioned on the left side of the shell, the second breakwater is positioned between the third breakwater and the fourth breakwater, and the fourth breakwater is positioned between the first breakwater and the second breakwater. The bottom surface of the inner side of the shell is an inclined surface inclined from left to right, and the water outlet is formed in the bottom wall of the shell at the lowest end of the inclined surface. The steam-water separator and the ejector are integrated, the serpentine coil pipe serving as a pipeline of the ejector is used as a baffle plate in the traditional steam-water separator to realize steam-water separation, the whole structure of the system is more compact, the ejector is heated by using the heat of fluid in the steam-water separator, the heat utilization efficiency of the system is improved, and compared with the traditiona