CN114470977A - Gas-water separator applied to hydrogen fuel cell - Google Patents
Gas-water separator applied to hydrogen fuel cell Download PDFInfo
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- CN114470977A CN114470977A CN202210402350.5A CN202210402350A CN114470977A CN 114470977 A CN114470977 A CN 114470977A CN 202210402350 A CN202210402350 A CN 202210402350A CN 114470977 A CN114470977 A CN 114470977A
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- separator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
- B01D45/08—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
Abstract
The invention relates to the technical field of gas-water separators, in particular to a gas-water separator applied to a hydrogen fuel cell. The device comprises a water storage cavity, an air inlet pipe, a separation cavity shell, an air outlet pipe, a top cover, an air outlet pipe, a first wall collision separator, a scaling spray pipe, a second wall collision separator and a spiral accelerating pipe. The invention has simple structure and smart design, accelerates gas firstly through the convergent-divergent nozzle, and then changes the centrifugal force of the gas by utilizing the special structures of the first wall-impacting separator, the second wall-impacting separator and the spiral accelerating tube, and the generated inertia is different due to different densities of the gas and the liquid, thereby realizing the purpose of gas-water separation.
Description
Technical Field
The invention relates to the technical field of gas-water separators, in particular to a gas-water separator applied to a hydrogen fuel cell.
Background
The hydrogen fuel cell is an important ring of sustainable energy system which is always pursued by human beings as a clean energy technology, in the design and development process of the hydrogen fuel cell, the water heat management is an important content, as the stack reaction can generate water, if the stack contains too much water, the stack can cause flooding and affect the performance of a proton exchange membrane, therefore, the water content in a hydrogen loop discharged from the stack is properly reduced, and the normal work of the stack is ensured;
at present, a common means for reducing the water content in a hydrogen loop is to use a gas-water separator, wherein the gas-water separator is mainly used for separating gas from liquid in an industrial liquid-containing system, most of the existing gas-water separators simply adopt the principles of centrifugation and collision to separate water from gas, the acceleration and the centrifugal force of the gas cannot be changed in the process, and the gas-water separation effect is common.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
In view of the above, the present invention is directed to provide a gas-water separator for a hydrogen fuel cell, so as to solve the problems that most of the existing gas-water separators proposed in the background art adopt the centrifugal and collision principles to separate water from gas, and the acceleration and centrifugal force of gas cannot be changed in the process.
In order to achieve the purpose, the invention provides the following technical scheme: a gas-water separator applied to a hydrogen fuel cell comprises a gas-water separation component, wherein a water storage cavity is arranged at the bottom of the gas-water separation component, the gas-water separation component comprises a separation cavity shell, a first wall collision separator, a zooming spray pipe and a second wall collision separator, an air outlet pipe and a bendable air inlet pipe are fixedly installed on the separation cavity shell in a penetrating mode, the input end of the first wall collision separator and the output end of the second wall collision separator are connected through a spiral accelerating pipe, the zooming spray pipe is fixedly connected between the input end of the second wall collision separator and one end of the air inlet pipe, the air inlet pipe has certain curvature, the installation angle of the zooming spray pipe is adjusted, the arrangement of parts in the separation cavity is more compact, the separation cavity shell is arranged at the bottom of the separation cavity shell, the exhaust pipe is fixedly connected with one end of the air outlet pipe, the output end of the first wall collision separator and one end of the exhaust pipe both extend into the water storage cavity, the top cover is installed at the top of separation chamber shell, and the blast pipe is the unchangeable return bend of pipe diameter.
Preferably, the second hits the wall separator and comprises column casing and elbow structure, a curb plate inner wall of column casing is equipped with the elbow structure that is used for separating liquid and gas, and the elbow structure is cup jointed in proper order by the different rings of a plurality of diameters and is formed, and fretwork notch has all been seted up to every ring bottom department, a curb plate that column casing and elbow structure are parallel is equipped with the air inlet, the bottom department of column casing is provided with the joint of giving vent to anger that is used for gas, rivers to flow, the structure that the wall separator was hit to the second is the same with the first structure that hits the wall separator.
Preferably, the two ends of the convergent-divergent nozzle are provided with connecting flanges connected with one end of the air inlet pipe and the air inlet of the second wall-impacting separator, the diameter of the section from the two ends of the convergent-divergent nozzle to the middle area is gradually reduced, and the maximum diameter of the section at the end of the convergent-divergent nozzle connected with the second wall-impacting separator is smaller than or equal to the maximum diameter of the section at the end of the convergent-divergent nozzle connected with the air inlet pipe.
Preferably, the relationship between the convergent-divergent nozzle cross-sectional diameter and the air flow velocity is:
wherein dA is the variation of the sectional area of the pipeline, dc is the variation of the airflow speed, A is the standard quantity of the sectional area of the pipeline, Ma is the absolute flow speed, and c is the standard flow speed when the gas enters the convergent-divergent nozzle, so that Ma is smaller, and the airflow speed is increased (dc >) when the sectional area is reduced (dA <). However, the sectional area should not be too small, or the pressure loss is too large. In order to realize smooth transition with subsequent parts, the diameter of the rear end of the spray pipe is gradually increased but not larger than that of the front section, so that the acceleration effect is ensured.
Preferably, the spiral accelerating tube is a spiral tube with a large spiral radius at the upper part and a small spiral radius at the lower part, the diameters of the spiral tubes are the same, the upper end of the spiral accelerating tube is fixedly connected with the air outlet joint of the second wall-impacting separator, and the lower end of the spiral accelerating tube is connected with the air inlet of the first wall-impacting separator.
The centrifugal force generated by the spiral accelerating tube is calculated by adopting the following formula:
where F represents centrifugal force, m is mass, a is centripetal acceleration, v is linear velocity, and r is spiral radius. The linear velocity v in the spiral pipe is basically unchanged, and the radius r of the spiral at the lower end is reduced, so that the centrifugal force is increased, and the centrifugal force is higher because the liquid density is higher than that of the gas, thereby realizing gas-water separation.
Preferably, the upper end and the lower end of the separation cavity shell are respectively formed by two cylinders with different outer diameters, the middle part of the separation cavity shell is in transition by adopting a conical structure, the conical surface angle of the conical structure is matched with the change of the spiral radius of the spiral accelerating tube, and the lower end of the separation cavity shell is sealed by a flat plate.
The water storage cavity is composed of a cylindrical shell and a water drain valve, a connecting flange is arranged at the top of the cylindrical shell, the cylindrical shell is fixedly connected with the bottom end of the small-diameter cylinder of the separation cavity shell through the connecting flange, and the water drain valve for controlling water drainage is arranged at the bottom of the cylindrical shell.
Compared with the prior art, the invention has the beneficial effects that:
the invention has simple structure and smart design, accelerates gas firstly through the convergent-divergent nozzle, and then changes the centrifugal force of the gas by utilizing the special structures of the first wall-impacting separator, the second wall-impacting separator and the spiral accelerating tube, and the generated inertia is different due to different densities of the gas and the liquid, thereby realizing the purpose of gas-water separation.
Drawings
FIG. 1 is a first perspective view of the present invention;
FIG. 2 is a second perspective view of the present invention;
FIG. 3 is a schematic perspective view of the wire pressing mechanism according to the present invention;
FIG. 4 is a schematic view of a three-dimensional structure of the sectioning knife of the present invention after the sectioning knife protrudes from the sectioning knife placement groove;
FIG. 5 is a schematic perspective view of the wire pressing mechanism according to the present invention;
FIG. 6 is a schematic view of the internal structure of a second bulkhead separator housing according to the invention;
FIG. 7 is a schematic perspective view of the spiral accelerating tube of the present invention;
FIG. 8 is a perspective view of the convergent-divergent nozzle of the present invention;
fig. 9 is a schematic perspective view of an exhaust pipe according to the present invention.
In the figure: 1. a gas-water separation component; 2. a water storage cavity; 3. an air inlet pipe; 4. a separation chamber housing; 5. an air outlet pipe; 6. a top cover; 7. an exhaust pipe; 8. a first wall-impacting separator; 9. a convergent-divergent nozzle; 10. a second wall-impacting separator; 11. a spiral accelerating tube.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
FIG. 1-FIG. 9 show a gas-water separator applied to a hydrogen fuel cell, which is disclosed in the embodiment of the present invention, and the gas-water separator applied to the hydrogen fuel cell comprises a gas-water separation component 1, a water storage cavity 2 is arranged at the bottom of the gas-water separation component 1, the gas-water separation component 1 comprises a separation cavity housing 4, a first wall-impacting separator 8, a convergent-divergent nozzle 9 and a second wall-impacting separator 10, an air outlet pipe 5 and a bendable air inlet pipe 3 are fixedly installed on the separation cavity housing 4 in a penetrating manner, an input end of the first wall-impacting separator 8 is connected with an output end of the second wall-impacting separator 10 through a spiral accelerating pipe 11, the convergent-divergent nozzle 9 is fixedly connected between an input end of the second wall-impacting separator 10 and one end of the air inlet pipe 3, the air inlet pipe 3 has a certain degree of curvature, and the installation angle of the convergent-divergent nozzle is adjusted, so that the arrangement of components in the separation cavity is more compact, separation chamber shell 4 sets up in the bottom department of separation chamber shell 4, and the one end fixedly connected with blast pipe 7 of outlet duct 5, and the first output that hits wall separator 8 and the one end of blast pipe 7 all extend to water storage cavity 2 in, and top cap 6 is installed at the top of separation chamber shell 4.
Further, the second wall-hitting separator 10 is composed of a cylindrical shell and an elbow structure, the inner wall of one side plate of the cylindrical shell is provided with the elbow structure for separating liquid and gas, the elbow structure is formed by sequentially sleeving a plurality of circular rings with different diameters, the bottom of each circular ring is provided with a hollow notch, the side plate of the cylindrical shell parallel to the elbow structure is provided with a gas inlet, the bottom of the cylindrical shell is provided with a gas outlet joint for gas and water to flow out, the structure of the second wall-hitting separator 10 is the same as that of the first wall-hitting separator 8, and two functions are provided, so that the further separation of gas and water is realized; secondly, the spiral motion of the gas is converted into vertical downward motion, so that the separated liquid is conveniently discharged.
Furthermore, two ends of the convergent-divergent nozzle 9 are provided with connecting flanges connected with one end of the air inlet pipe 3 and an air inlet of the second wall-collision separator 10, the section diameter from the two ends of the convergent-divergent nozzle 9 to the middle area is gradually reduced, and the maximum section diameter of one end, connected with the second wall-collision separator 10, of the convergent-divergent nozzle 9 is smaller than or equal to the maximum section diameter of one end, connected with the air inlet pipe 3, of the convergent-divergent nozzle 9.
Further, the relationship between the diameter of the cross section of the convergent-divergent nozzle 9 and the speed of the air flow is:
wherein dA is the variation of the sectional area of the pipeline, dc is the variation of the air flow speed, A is the standard quantity of the sectional area of the pipeline, Ma is the absolute flow speed, and c is the standard flow speed when the air enters the convergent-divergent nozzle 9, therefore, Ma is less than 1, and therefore, when the sectional area is reduced by dA <0, the air flow speed is increased by dc > 0. However, the sectional area should not be too small, or the pressure loss is too large. In order to realize smooth transition with subsequent parts, the diameter of the rear end of the spray pipe 9 is gradually increased but not larger than that of the front section, so as to ensure the acceleration effect.
Furthermore, the spiral accelerating tube is a spiral tube with a large spiral radius at the upper part and a small spiral radius at the lower part, the diameters of the spiral tubes are the same, the upper end of the spiral accelerating tube is fixedly connected with the air outlet joint of the second wall-collision separator, and the lower end of the spiral accelerating tube is connected with the air inlet of the first wall-collision separator.
The centrifugal force generated by the spiral accelerating tube 11 is calculated by the following formula:
where F represents centrifugal force, m is mass, a is centripetal acceleration, v is linear velocity, and r is spiral radius. The linear velocity v in the spiral tube 11 is substantially constant while the radius r of the spiral at the lower end is smaller, so that the centrifugal force becomes larger and the centrifugal force is more applied since the liquid has a higher density than the gas, thereby achieving gas-water separation.
Furthermore, the upper end and the lower end of the separation cavity shell 4 are respectively composed of two cylinders with different outer diameters, the middle part of the separation cavity shell 4 is in transition by adopting a conical structure, the conical surface angle of the conical structure is matched with the change of the spiral radius of the spiral accelerating tube 11, and the lower end of the separation cavity shell 4 is sealed by a flat plate.
The water storage cavity 2 is composed of a cylindrical shell and a water drain valve, a connecting flange is arranged at the top of the cylindrical shell, the cylindrical shell is fixedly connected with the bottom end of the separation cavity shell 4 through the connecting flange, and the water drain valve for controlling water drainage is arranged at the bottom of the cylindrical shell.
The working process of the invention is as follows:
as shown in fig. 1-9, when the device is used, after gas discharged from the cell stack enters the gas-water separator through the gas inlet pipe 3, the gas flow velocity is increased through the convergent-divergent nozzle 9, after acceleration, the gas flow impacts the cylindrical shell and the elbow structure of the wall-impacting separator 10, because the liquid density is higher than that of the gas, the centrifugal force is higher, water vapor is condensed, the condensed water drops from the hollow notch of the elbow structure, and the first-level separation of the gas and the water is realized; then hydrogen, water vapor and separated liquid water enter a spiral accelerating tube 11, the spiral accelerating tube 11 is a spiral tube with the same tube diameter and large thread radius at the upper part and small thread radius at the lower part, the linear velocity in the spiral tube 11 is basically unchanged, and the spiral radius at the lower end is reduced, so that the centrifugal force is increased, the liquid density is higher than that of gas, and the centrifugal force is larger, so that gas-water separation is realized, and partial water is separated again due to different centrifugal forces on the hydrogen and the water vapor; when the gas collides with the collision wall type separator 8, the principle of the gas flow colliding with the collision wall type separator 10 is the same, and the water vapor and the hydrogen are further separated; the separated liquid water and hydrogen enter the water storage cavity 2, wherein, the liquid water is deposited at the bottom of the water storage cavity 2 under the action of gravity, and is discharged from a water discharge valve at regular time through manual or automatic control, the hydrogen is distributed at the upper part of the water storage cavity 2 due to small density, and is then discharged from an exhaust pipe 7 and an air outlet pipe 5 to form a gas-water separator, and after passing through the gas-water separator, the water content of the discharged hydrogen is obviously reduced. And the normal operation of the cell stack is ensured.
In the description of the present invention, it is to be understood that the terms "center", "middle", "eccentric", "longitudinal", "lateral", "length", "width", "thickness", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the orientation or positional relationship shown in the drawings, and are only for convenience of describing and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the invention.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. The utility model provides a be applied to hydrogen fuel cell's deareator, includes deareator subassembly (1), its characterized in that: the bottom of the gas-water separation component (1) is provided with a water storage cavity (2), the gas-water separation component (1) comprises a separation cavity shell (4), a first wall-impacting separator (8), a scaling spray pipe (9) and a second wall-impacting separator (10), an air outlet pipe (5) and a bendable air inlet pipe (3) are fixedly arranged on the separation cavity shell (4) in a penetrating way, the input end of the first wall-impacting separator (8) is connected with the output end of the second wall-impacting separator (10) through a spiral accelerating tube (11), a convergent-divergent nozzle (9) is fixedly connected between the input end of the second wall-impacting separator (10) and one end of the air inlet pipe (3), the separation chamber housing (4) is arranged at the bottom of the separation chamber housing (4), one end of the air outlet pipe (5) is fixedly connected with an air outlet pipe (7), and the output end of the first wall collision separator (8) and one end of the air outlet pipe (7) both extend into the water storage cavity (2).
2. The gas-water separator for a hydrogen fuel cell according to claim 1, wherein: the second hits wall separator (10) and comprises column casing and elbow structure, a curb plate inner wall of column casing is equipped with the elbow structure that is used for separating liquid and gas, and the elbow structure cup joints in proper order by the different rings of a plurality of diameters and forms, and the fretwork notch has all been seted up to every ring bottom department, a curb plate that column casing and elbow structure are parallel is equipped with the air inlet, the bottom department of column casing is provided with the joint of giving vent to anger that is used for gas, rivers to go out, the second hits the structure of wall separator (10) and the first structure that hits wall separator (8) is the same.
3. The gas-water separator for a hydrogen fuel cell according to claim 1, wherein: connecting flanges connected with one end of the air inlet pipe (3) and an air inlet of the second wall-collision separator (10) are arranged at two ends of the scaling spray pipe (9), the diameter of the section from the two ends of the scaling spray pipe (9) to the middle area is gradually reduced, and the maximum diameter of the section at one end, connected with the second wall-collision separator (10), of the scaling spray pipe (9) is smaller than or equal to that of the section at one end, connected with the air inlet pipe (3), of the scaling spray pipe (9).
4. The gas-water separator for a hydrogen fuel cell according to claim 3, wherein: the relationship between the section diameter of the convergent-divergent nozzle (9) and the air flow speed is as follows:
wherein dA is the variation of the sectional area of the pipeline, dc is the variation of the air flow speed, A is the standard quantity of the section of the pipeline, Ma is the absolute flow speed, and c is the standard flow speed when the air enters the convergent-divergent nozzle (9).
5. The gas-water separator for a hydrogen fuel cell according to claim 4, wherein: the spiral accelerating tube (11) is a spiral tube with a large spiral radius at the top and a small spiral radius at the bottom, the upper end of the spiral accelerating tube (11) is fixedly connected with the air outlet joint of the second wall-hitting separator (10), and the lower end of the spiral accelerating tube (11) is connected with the air inlet of the first wall-hitting separator (8).
6. The gas-water separator for a hydrogen fuel cell according to claim 5, wherein: the centrifugal force generated by the spiral accelerating tube (11) is calculated by adopting the following formula:
where F represents centrifugal force, m is mass, a is centripetal acceleration, v is linear velocity, and r is spiral radius.
7. The gas-water separator for a hydrogen fuel cell according to claim 1, wherein: the upper end and the lower end of the separation cavity shell (4) are respectively composed of two cylinders with different outer diameters, the middle part of the separation cavity shell (4) is in transition by adopting a conical structure, the conical surface angle of the conical structure is matched with the change of the spiral radius of the spiral accelerating tube 11, and the lower end of the separation cavity shell (4) is sealed by a flat plate.
8. The gas-water separator for a hydrogen fuel cell according to claim 7, wherein: and the flat plate is provided with a hollow hole for penetrating through the bottom end of the exhaust pipe (7) and the air outlet of the first wall collision separator (8).
9. The gas-water separator for a hydrogen fuel cell according to claim 1, wherein: the water storage cavity (2) is composed of a cylindrical shell and a water drain valve, a connecting flange is arranged at the top of the cylindrical shell, the cylindrical shell is fixedly connected with the bottom end of the separation cavity shell (4) through the connecting flange, and the water drain valve used for controlling water drainage is arranged at the bottom of the cylindrical shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210402350.5A CN114470977A (en) | 2022-04-18 | 2022-04-18 | Gas-water separator applied to hydrogen fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210402350.5A CN114470977A (en) | 2022-04-18 | 2022-04-18 | Gas-water separator applied to hydrogen fuel cell |
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| CN114470977A true CN114470977A (en) | 2022-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210402350.5A Pending CN114470977A (en) | 2022-04-18 | 2022-04-18 | Gas-water separator applied to hydrogen fuel cell |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030164328A1 (en) * | 2001-06-12 | 2003-09-04 | Johnny Arnaud | Apparatus for mixing fluids |
| CN204121936U (en) * | 2014-10-22 | 2015-01-28 | 西南石油大学 | A kind of novel combination type three phases separator |
| CN110835565A (en) * | 2019-11-19 | 2020-02-25 | 中国石油大学(华东) | Natural gas-liquid separation device |
| CN210631803U (en) * | 2019-07-30 | 2020-05-29 | 四川长仪油气集输设备股份有限公司 | Combined gas-liquid separator |
| CN111318058A (en) * | 2020-02-14 | 2020-06-23 | 东北石油大学 | Integrated gas-liquid-solid continuous separation device |
| CN210934114U (en) * | 2019-10-22 | 2020-07-07 | 贵州德安泰科技有限公司 | High-efficiency energy-saving centrifugal steam-water separator |
-
2022
- 2022-04-18 CN CN202210402350.5A patent/CN114470977A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030164328A1 (en) * | 2001-06-12 | 2003-09-04 | Johnny Arnaud | Apparatus for mixing fluids |
| CN204121936U (en) * | 2014-10-22 | 2015-01-28 | 西南石油大学 | A kind of novel combination type three phases separator |
| CN210631803U (en) * | 2019-07-30 | 2020-05-29 | 四川长仪油气集输设备股份有限公司 | Combined gas-liquid separator |
| CN210934114U (en) * | 2019-10-22 | 2020-07-07 | 贵州德安泰科技有限公司 | High-efficiency energy-saving centrifugal steam-water separator |
| CN110835565A (en) * | 2019-11-19 | 2020-02-25 | 中国石油大学(华东) | Natural gas-liquid separation device |
| CN111318058A (en) * | 2020-02-14 | 2020-06-23 | 东北石油大学 | Integrated gas-liquid-solid continuous separation device |
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Application publication date: 20220513 |