CN215008301U - Gas-liquid separator for direct methanol fuel cell - Google Patents
Gas-liquid separator for direct methanol fuel cell Download PDFInfo
- Publication number
- CN215008301U CN215008301U CN202023329562.0U CN202023329562U CN215008301U CN 215008301 U CN215008301 U CN 215008301U CN 202023329562 U CN202023329562 U CN 202023329562U CN 215008301 U CN215008301 U CN 215008301U
- Authority
- CN
- China
- Prior art keywords
- cavity
- gas
- liquid
- water recovery
- fuel cell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The utility model provides a gas-liquid separator for a direct methanol fuel cell, which adopts an inner-layer cavity structure and an outer-layer cavity structure; wherein the inner cavity consists of an upper tail discharge cavity and a lower water recovery cavity, and the whole is positioned at the upper half part of the separator; the outer cavity is a liquid storage cavity; the tail discharge cavity and the water recovery cavity are separated by the partition plate with the hole, and the two cavities are communicated through a pore passage arranged on the partition plate; the upper surface of the tail discharge cavity is provided with a tail discharge port for gas discharge; the water recovery cavity is used for separating liquid water and air, and a pipe orifice is arranged at the center of the upper part of the water recovery cavity, is connected with the cathode material inlet and introduces a gas-liquid mixture; a plurality of baffle plates with symmetrically staggered through holes are arranged at the lower part of the water recovery cavity; this vapour and liquid separator has adopted the design of ectonexine cavity structural design, compares in the upper and lower layer cavity structural design space integration degree in the past higher, accords with the location of direct methanol fuel cell portable power source more.
Description
Technical Field
The utility model belongs to the technical field of fuel cell, concretely relates to vapour and liquid separator for direct methanol fuel cell.
Background
A Direct Methanol Fuel Cell (DMFC) is a cell that uses a methanol solution as fuel. With the increasing energy demand of portable electronic devices, the conventional lead-acid battery has difficulty in meeting the requirements of energy density and endurance performance, and the current hydrogen fuel cell system has a relatively complex structure, and fuel is not easy to store and carry, so that the direct methanol fuel cell has attracted extensive attention and application in the field of portable mobile power sources. In order to meet the design of lightweight and integration of portable products, the direct methanol fuel cell in the prior art adopts pure methanol solution as fuel. However, pure methanol solution has strong permeability and is vulnerable to the performance of the battery, and in reality, the pure methanol solution is usually diluted by recovering water generated in the electrochemical reaction process of the battery system. In addition to water, the electrochemical reaction also produces small amounts of CO2Gas, and CO2The accumulation of gas can result in uneven supply of methanol solution and prevent the catalytic reaction from proceeding, impairing cell performance and requiring timely venting. It is necessary to separate the gas and liquid generated in the electrochemical process, recycle the separated water and methanol solution which is not completely reacted, and separate CO2Gas is discharged from the cell.
A typical direct methanol fuel cell gas-liquid separator typically includes a water/air separator connected to the cathode side condenser of the stack and CO connected to the anode outlet of the stack2The two separate parts of the separator take up a large amount of space in the system, are not highly integrated, and the separator function is only fully maintained when it follows a given spatial orientation. Chinese patent CN101997127B discloses a gas-liquid separator in which two independent gas-liquid separators are integrated into one body and a spiral separation rod is provided in an air/water separation chamber. The utility model has the advantages of large occupation space, low integration level and directional maintenanceAnd the like, but the design makes the space of the gas-liquid mixture passing through the rotating separation rod relatively open, the whole gas-liquid mixture is difficult to separate through rotation, and the gas-liquid separation effect is limited. The patent CN106898801B is further improved on the basis of the former patent, the gas-liquid separation capability of the device is enhanced, but the technology only leaves an air outlet covered with a hydrophobic membrane at the top end of the structure, and the air fluency of an upper channel and a lower channel is influenced to a certain extent by the blocking effect of a built-in spiral plate, so that CO is generated2The gas is not removed completely.
In view of the above, the conventional gas-liquid separator still has room for further improvement in integration, separation effect and performance stability.
Accordingly, there is a need for improvements in the art.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a vapour and liquid separator for direct methanol fuel cell compares in prior art achievement, and this vapour and liquid separator can further promote direct methanol fuel cell vapour and liquid separator's integrated nature, promotes the gas-liquid separation effect, strengthens water recovery efficiency and CO simultaneously2The discharge capacity and the normal operation capacity of the gas-liquid separator in any direction for a long time are maintained.
In order to solve the technical problem, the utility model provides a gas-liquid separator for a direct methanol fuel cell, which adopts an inner-layer cavity structure and an outer-layer cavity structure; wherein the inner cavity consists of an upper tail discharge cavity and a lower water recovery cavity, and the whole is positioned at the upper half part of the separator; the outer cavity is a liquid storage cavity; the tail discharge cavity and the water recovery cavity are separated by the partition plate with the hole, and the two cavities are communicated through a pore passage arranged on the partition plate;
the middle part of the tail discharge cavity is provided with a tail discharge pipeline communicated with the water recovery cavity and used for discharging gas; the water recovery cavity is used for separating liquid water and air, and a pipe orifice is arranged at the center of the upper part of the water recovery cavity, is connected with the cathode material inlet and introduces a gas-liquid mixture; a plurality of baffle plates with symmetrically staggered through holes are arranged at the lower part of the water recovery cavity;
an anode material inlet on the upper surface of the liquid storage cavity is communicated with an anode outlet of the galvanic pile, and the anode material outlet is communicated with the anode inlet of the galvanic pile; the cathode material inlet is communicated with the outlet of the cathode condenser of the electric pile; an anode material inlet introduces a mixture of unreacted fuel and CO2 gas into the liquid storage cavity from the anode of the pile; one side of the bottom of the liquid storage cavity is provided with a lean fuel feeding hole and a lean fuel discharging hole which are respectively communicated with the liquid pump through a rubber plug; inside the liquid storage cavity, the lean fuel discharge port is connected with a heavy hammer with a through hole through a hose and a folded pipeline, so that the gas-liquid separator can realize normal liquid suction under the condition of +/-90 degrees; a high-concentration fuel feeding hole is arranged beside the dilute fuel discharging hole and communicated with a fuel tank; the lean fuel feed inlet, the high-concentration fuel feed inlet and the anode material outlet are communicated with each other through an inner pipeline.
As an improvement to the present invention, a gas-liquid separator for a direct methanol fuel cell: an air outlet pipeline is arranged in the tail discharge pipeline, and the lower end of the pipeline extends 4-7mm away from the upper surface of the tail discharge cavity, so that condensed water drops are prevented from entering a tail discharge port.
As an improvement to the present invention, a gas-liquid separator for a direct methanol fuel cell: two through holes are arranged on the partition plate with the hole in the middle of the inner cavity in opposite positions on the diagonal line of the partition plate and are used as gas or liquid transmission channels.
As an improvement to the present invention, a gas-liquid separator for a direct methanol fuel cell: the method is characterized in that: the baffle cavity is provided with 3-6 layers of baffle plates, and the height of a cavity formed between every two adjacent baffle plates is set to be 2-4 mm; two through holes are arranged at opposite positions on the diagonal line of each baffle plate, an opening hole is also arranged at the center of the baffle plate at the topmost end, and the through holes are arranged in a staggered manner with the through holes of the partition plate with holes between the water recovery cavity and the tail discharge cavity; the through holes of two adjacent baffle plates are arranged in a staggered mode to increase the gas-liquid separation stroke and improve the water recovery effect.
As an improvement to the present invention, a gas-liquid separator for a direct methanol fuel cell: the outer surface of the outer cavity is provided with a cathode material inlet and a cathode material outlet which are communicated through an inner pipeline arranged on the wall side, the cathode material inlet is connected with an air pump, and the cathode material outlet is connected with a cathode feed inlet of the galvanic pile.
As an improvement to the present invention, a gas-liquid separator for a direct methanol fuel cell: the liquid storage cavity is formed by fastening an upper shell and a lower shell through a sealing line and a screw, and a sealing groove is formed in a contact surface; the sealing line material is corrosion-resistant and high-temperature-resistant materials such as silicon rubber, fluororubber and the like.
As an improvement to the present invention, a gas-liquid separator for a direct methanol fuel cell: the heavy hammer is of a nearly conical structure, and the conical angle is 55-70 degrees.
The utility model relates to a vapour and liquid separator's for direct methanol fuel cell technical advantage does:
compared with the prior art, the utility model, following positive effect has: firstly, the gas-liquid separator adopts the structural design of the inner-layer cavity and the outer-layer cavity, has higher space integration degree compared with the structural design of the upper-layer cavity and the lower-layer cavity in the prior art, and better conforms to the positioning of a portable mobile power supply of a direct methanol fuel cell; secondly, the spiral separating rod is omitted, and the tail discharge cavity is additionally arranged, so that the smoothness of separated gas discharge is further improved; thirdly, a baffling cavity with a multi-baffle plate structure is used as a main gas-liquid separation mode, so that the gas-liquid separation stroke is increased, and the water recovery effect is improved; fourthly, through the intensive design of simple structures such as the inner-layer cavity, the outer-layer cavity, the baffling cavity, the partition plate with holes, the heavy hammer and the like, the air/liquid water separation at the cathode side and the CO at the anode side are realized2The separation of gas/fuel mixed liquid is integrated, the performance stability of the gas-liquid separator is further improved, and the normal operation of the gas-liquid separator in the +/-90-degree direction is ensured.
Drawings
The following describes the present invention in further detail with reference to the accompanying drawings.
FIG. 1 is a sectional view of a gas-liquid separator according to the present invention;
FIG. 2 is an assembly view of the gas-liquid separator of the present invention;
FIG. 3 is a cross-sectional view of the water recovery chamber 104 of FIG. 1;
fig. 4 is a perspective view of the water recovery chamber 104 of fig. 4.
The parts in the drawings are numbered as follows: 101-condenser cathode feed inlet; 102-tail discharge pipe; 103-tail row cavity; 104-a water recovery chamber; 105-a liquid storage cavity; 106-weight; 201-anode material outlet; 202-high concentration fuel feed; 203-lean fuel feed; 204-a lean fuel outlet; 205-anode material inlet; 206-cathode material outlet; 207-cathode feed inlet; 301-perforated partition plate; 302-baffle one; 303-baffle plate II; 304-baffle III; 305-fold type pipeline; 401-vent.
Detailed Description
The invention will be further described with reference to specific examples, but the scope of the invention is not limited thereto.
Embodiment 1, a gas-liquid separator for a direct methanol fuel cell, as shown in fig. 1-4, adopts a structure of two cavities, an inner cavity and an outer cavity; wherein the inner cavity consists of an upper tail discharge cavity 103 and a lower water recovery cavity 104, and the whole is positioned at the upper half part of the separator; the outer cavity is a liquid storage cavity 105; the perforated partition plate separates the tail discharge cavity 103 from the water recovery cavity 104 and communicates the two cavities through the pore passages arranged on the perforated partition plate. The tail discharge pipeline 102 is arranged on the upper surface of the tail discharge cavity 103 and used for discharging gas; an air outlet pipeline is arranged in the tail exhaust pipeline 102, and the upper end of the air outlet pipeline extends out of the end face of the tail exhaust cavity 103 by 4-7mm so as to prevent condensed water drops from entering the tail exhaust pipeline 102; the lower end of the air outlet pipeline is 4mm-6mm away from the upper surface of the water recovery cavity 104 (the length of the tail exhaust pipeline 102 extending into the water recovery cavity 104 is 4mm-6 mm).
And a pipe orifice is arranged at the center of the upper part of the side wall of the tail row cavity 103, is connected with a cathode material inlet 101 of the condenser and is used for introducing a cooled gas-liquid mixture. As shown in fig. 3 and 4, the water recovery cavity 104 includes three layers of baffle plates with symmetrically staggered through holes, the height of a chamber formed between adjacent baffle plates is set to be 2mm-4mm, and each baffle plate is provided with 2 phi 7 exhaust holes 401 which are arranged in a staggered manner; the exhaust holes 401 are symmetrically arranged on a circular ring with the radius of 7mm at the center of the tail exhaust pipeline 102, so that the gas-liquid separation stroke is increased, and the water recovery effect is improved.
The water recovery cavity 104 comprises a perforated partition plate 301, a first baffle plate 302, a second baffle plate 303 and a third baffle plate 304 which are sequentially arranged from top to bottom, through holes for discharging gas are formed in the center positions of the perforated partition plate 301 and the first baffle plate 302, and exhaust holes 401 corresponding to the perforated partition plate 301 and the first baffle plate 302 are communicated through pipelines. The exhaust hole 401 on the clapboard 301 with holes is communicated with the tail exhaust cavity 103, and the exhaust hole 401 on the third baffle plate 304 is communicated with the liquid storage cavity 105.
As shown in fig. 2, an anode material outlet 201 on the upper surface of the reservoir 105 is communicated with the anode inlet of the pile; the cathode feed outlet 206 is connected to the cathode feed inlet 207. The cathode material outlet 206 is communicated with the cathode inlet of the galvanic pile, and the cathode material inlet 207 is connected with an air pump.
The cathode material outlet 206 is communicated with the cathode material inlet 207 through a pipeline, and the pipeline is arranged in the side wall of the liquid storage cavity 105 and is not communicated with the liquid storage cavity 105.
One side of the bottom of the liquid storage cavity 105 is provided with a lean fuel discharge port 204 and a lean fuel feed port 203 which are respectively communicated with the liquid pump through a rubber plug. Inside the liquid storage cavity 105, the lean fuel outlet 204 is connected to a weight 106 with a through hole through a flexible pipe and a folded pipeline 305, the flexible pipe passes through the folded pipeline 305 and then is connected to the weight 106, and the folded pipeline 305 is located right above the weight 106.
A high-concentration fuel inlet 202 is arranged beside the lean fuel outlet 204, and the high-concentration fuel inlet 202 is communicated with a fuel tank; the lean fuel feed opening 203, the high-concentration fuel feed opening 202, and the anode material outlet 201 are communicated with each other through internal pipes. The high-concentration solution and the dilute solution are mixed and introduced from the high-concentration fuel inlet 202 and the dilute fuel inlet 203, and the mixed solution enters the anode of the pile through the anode material outlet 201.
The liquid storage cavity 105 is formed by fastening an upper shell and a lower shell through a sealing line and a screw, and a sealing groove is formed in the contact surface; the sealing line HAs the hardness of 30HA-40HA, and is made of corrosion-resistant and high-temperature-resistant materials such as silicon rubber and fluororubber.
The gas-liquid separation process of the gas-liquid separator in normal operation is as follows:
the gas-liquid mixture flowing into the water recovery cavity 104 through the condenser cathode material inlet 101 in the battery system is subjected to gas-liquid separation under the action of the perforated partition plate and the baffling cavity, separated gaseous substances are discharged out of the system through the tail discharge cavity 103 and the tail discharge pipeline 102, and liquid water flows into the liquid storage cavity 105 through the baffle plate through hole at the bottom of the baffling cavity under the action of gravity;
the gas-liquid mixture, in which CO flows into the liquid storage cavity 105 through the anode material inlet 205 in the battery system2The gas enters the water recovery cavity 104 through the baffle plate through hole at the bottom of the baffle cavity, and is discharged out of the system through the tail discharge cavity 103 and the tail discharge pipeline 102 together with the gas separated from the water recovery cavity 104; the fuel mixed liquid is uniformly mixed with the liquid water flowing into the liquid storage cavity 105 and the high-concentration fuel introduced through the high-concentration fuel inlet, and then the mixture is supplied to the anode of the galvanic pile through the anode material outlet.
Finally, it is also noted that the above-mentioned list is only a few specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and many modifications are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the invention should be considered as within the scope of the invention.
Claims (7)
1. A gas-liquid separator for a direct methanol fuel cell adopts a structure of an inner cavity and an outer cavity; wherein the inner cavity consists of an upper tail discharge cavity and a lower water recovery cavity, and the whole is positioned at the upper half part of the separator; the outer cavity is a liquid storage cavity; the tail discharge cavity and the water recovery cavity are separated by the partition plate with the hole, and the two cavities are communicated through a pore passage arranged on the partition plate; the method is characterized in that:
the middle part of the tail discharge cavity is provided with a tail discharge pipeline communicated with the water recovery cavity and used for discharging gas; the water recovery cavity is used for separating liquid water and air, and a pipe orifice is arranged at the center of the upper part of the water recovery cavity, is connected with the cathode material inlet and introduces a gas-liquid mixture; a plurality of baffle plates with symmetrically staggered through holes are arranged at the lower part of the water recovery cavity;
an anode material inlet on the upper surface of the liquid storage cavity is communicated with an anode outlet of the galvanic pile, and the anode material outlet is communicated with the anode inlet of the galvanic pile; the cathode material inlet is communicated with the outlet of the cathode condenser of the electric pile; the anode material inlet will not react fully fuel and CO2Leading the gas mixture into a liquid storage cavity from the anode of the galvanic pile; one side of the bottom of the liquid storage cavity is provided with a lean fuel feeding hole and a lean fuel discharging hole which are respectively communicated with the liquid pump through a rubber plug; inside the liquid storage cavity, the lean fuel discharge port is connected with a heavy hammer with a through hole through a hose and a folded pipeline, so that the gas-liquid separator can realize normal liquid suction under the condition of +/-90 degrees; a high-concentration fuel feeding hole is arranged beside the dilute fuel discharging hole and communicated with a fuel tank; the lean fuel feed inlet, the high-concentration fuel feed inlet and the anode material outlet are communicated with each other through an inner pipeline.
2. A gas-liquid separator for a direct methanol fuel cell as defined in claim 1 wherein: an air outlet pipeline is arranged in the tail discharge pipeline, and the lower end of the pipeline extends 4-7mm away from the upper surface of the tail discharge cavity, so that condensed water drops are prevented from entering a tail discharge port.
3. A gas-liquid separator for a direct methanol fuel cell as defined in claim 1 wherein: two through holes are arranged on the partition plate with the hole in the middle of the inner cavity in opposite positions on the diagonal line of the partition plate and are used as gas or liquid transmission channels.
4. A gas-liquid separator for a direct methanol fuel cell according to claim 1 or 3, characterized in that: the baffle cavity is provided with 3-6 layers of baffle plates, and the height of a cavity formed between every two adjacent baffle plates is set to be 2-4 mm; two through holes are arranged at opposite positions on the diagonal line of each baffle plate, an opening hole is also arranged at the center of the baffle plate at the topmost end, and the through holes are arranged in a staggered manner with the through holes of the partition plate with holes between the water recovery cavity and the tail discharge cavity; the through holes of two adjacent baffle plates are arranged in a staggered mode to increase the gas-liquid separation stroke and improve the water recovery effect.
5. A gas-liquid separator for a direct methanol fuel cell as defined in claim 1 wherein: the outer surface of the outer cavity is provided with a cathode material inlet and a cathode material outlet which are communicated through an inner pipeline arranged on the wall side, the cathode material inlet is connected with an air pump, and the cathode material outlet is connected with a cathode feed inlet of the galvanic pile.
6. A gas-liquid separator for a direct methanol fuel cell as defined in claim 1 wherein: the liquid storage cavity is formed by fastening an upper shell and a lower shell through a sealing line and a screw, and a sealing groove is formed in a contact surface; the sealing line material is corrosion-resistant and high-temperature-resistant materials such as silicon rubber, fluororubber and the like.
7. A gas-liquid separator for a direct methanol fuel cell as defined in claim 1 wherein: the heavy hammer is of a nearly conical structure, and the conical angle is 55-70 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023329562.0U CN215008301U (en) | 2020-12-30 | 2020-12-30 | Gas-liquid separator for direct methanol fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023329562.0U CN215008301U (en) | 2020-12-30 | 2020-12-30 | Gas-liquid separator for direct methanol fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215008301U true CN215008301U (en) | 2021-12-03 |
Family
ID=79142941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023329562.0U Active CN215008301U (en) | 2020-12-30 | 2020-12-30 | Gas-liquid separator for direct methanol fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215008301U (en) |
-
2020
- 2020-12-30 CN CN202023329562.0U patent/CN215008301U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5241092B2 (en) | Semi-passive fuel cell system | |
| JP4623795B2 (en) | Fuel cell stack | |
| US6936369B1 (en) | Fuel cell stack | |
| US8227129B2 (en) | Passive micro fuel cell | |
| KR850002699A (en) | Liquid fuel cell | |
| CN102099507A (en) | Electrolyser module | |
| WO2001068945A3 (en) | Water electrolysis system | |
| JP2019005689A (en) | Gas-liquid separator | |
| EP1840998A2 (en) | Fuel cell system | |
| US7678487B2 (en) | Discharged fuel diluter | |
| US7931992B2 (en) | Fuel cell system | |
| JP2021185577A (en) | Vapor liquid separator for fuel cell | |
| CN215008301U (en) | Gas-liquid separator for direct methanol fuel cell | |
| JP2019005690A (en) | Gas-liquid separator | |
| CN108390082A (en) | A kind of separator for direct liquid feed fuel cell | |
| CN112820904A (en) | Gas-liquid separator for direct methanol fuel cell | |
| JP5137515B2 (en) | Fuel cell stack | |
| CN211025462U (en) | Gas-water separation device of fuel cell system | |
| KR20070043241A (en) | Semi passive type fuel cell system | |
| KR101976901B1 (en) | Unit cell of fuel cell | |
| CN213853724U (en) | Steam-water separator | |
| JP5292553B2 (en) | Fuel cell stack | |
| JP7254850B2 (en) | fuel cell system | |
| TWI760844B (en) | Gas recovery device used for anode of fuel cell and its recirculation system thereof | |
| KR100895205B1 (en) | Electrode Separator Having Groove for Draining of Liquid Component on Channel and Fuel Cell Employed with the Same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |