CN113471499A - Tubular solid oxide fuel cell structure - Google Patents

Tubular solid oxide fuel cell structure Download PDF

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Publication number
CN113471499A
CN113471499A CN202111018640.1A CN202111018640A CN113471499A CN 113471499 A CN113471499 A CN 113471499A CN 202111018640 A CN202111018640 A CN 202111018640A CN 113471499 A CN113471499 A CN 113471499A
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layer
anode
cylinder
cathode
supporting layer
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CN202111018640.1A
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CN113471499B (en
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钱黎超
秦刚华
寿春暉
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Aideman Hydrogen Energy Equipment Co ltd
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Aideman Hydrogen Energy Equipment Co ltd
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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
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
    • H01M8/1213—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the electrode/electrolyte combination or the supporting material
    • 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
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
    • 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
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
    • H01M8/04014—Heat exchange using gaseous fluids; Heat exchange by combustion of reactants
    • 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
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
    • H01M8/1231—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte with both reactants being gaseous or vaporised
    • 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
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/241—Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported electrolytes
    • H01M8/2425—High-temperature cells with solid electrolytes
    • H01M8/243—Grouping of unit cells of tubular or cylindrical configuration
    • 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
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/2465—Details of groupings of fuel cells
    • H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
    • H01M8/2475—Enclosures, casings or containers of fuel cell stacks
    • 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
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
    • H01M2008/1293—Fuel cells with solid oxide electrolytes
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuel Cell (AREA)

Abstract

The invention relates to the technical field of fuel cells, in particular to a tubular solid oxide fuel cell structure which comprises a shell, a cathode reaction layer, an electrolyte layer and an anode reaction layer, wherein the shell comprises a middle shell barrel, an end cover and a bottom cover, the end cover and the bottom cover are respectively fixed at the upper end and the lower end of the middle shell barrel, an anode supporting layer is attached to the inside of the anode reaction layer, the anode supporting layer is made of a breathable heat-resistant material, the surface of the anode supporting layer is smooth, the outer surface of the cathode reaction layer is wrapped by the cathode supporting layer, the cathode supporting layer and the anode supporting layer are made of the same material, a supporting barrel is fixed inside the middle shell barrel, a heat regeneration cavity is formed between the supporting barrel and the middle shell barrel, a gas passing cavity is formed between the supporting barrel and the cathode supporting layer, and the bottom of the anode supporting layer is communicated with the heat regeneration cavity. The invention is provided with the regenerative cavity, thereby solving the problem of supercooling at the inlet without damage, improving the generating capacity of the galvanic pile with the same volume and simultaneously increasing the strength of the tubular galvanic pile.

Description

Tubular solid oxide fuel cell structure
Technical Field
The invention relates to the technical field of fuel cells, in particular to a tubular solid oxide fuel cell structure.
Background
The fixed oxide fuel cell is called a third generation fuel cell, and mainly comprises a cathode, an anode, an electrolyte and a connector which are connected in series to form a galvanic pile with rated power generation.
Tubular solid oxide fuel cells generally adopt an integrated structure, taking methane fuel as an example, methane reforming reaction is often violent in the inlet section, and accompanied by absorption of a large amount of heat, while the second half section of the cell releases heat through steam reforming reaction, and the cell temperature shows the distribution condition of high two ends and low inlet section temperature, namely, supercooling effect. The undercooling effect can cause an axial temperature gradient, which can cause thermal stress and, in severe cases, can affect the structural strength of the cell.
Chinese patent publication No. CN111224143A discloses a tubular solid oxide fuel cell structure, which is divided into several layers in the axial direction, each layer contains a complete tubular fuel cell unit, each fuel cell unit comprises, from outside to inside, a housing layer, an anode electrode, an electrolyte layer, a cathode electrode and spiral guide fins, the anode electrode comprises an anode electrode supporting layer and an anode reaction layer, and the cathode electrode comprises a cathode reaction layer and a cathode supporting layer; an anode gas channel is formed between the outer shell and the anode electrode supporting layer at intervals, and an axis channel in the cathode supporting layer is a cathode gas channel; the thickness of each corresponding electrode layer of each small fuel cell unit is the same, the width along the axial direction is different from the particles forming the electrodes and the distribution condition of the particles, and the diameters of the particles of each layer are regularly distributed along the axial direction. The invention can effectively enhance the mass transfer characteristic of the battery, improve the efficiency of the battery, adjust the axial distribution of the battery temperature and the like, and control the supercooling effect of the fuel inlet section.
However, the problem of supercooling phenomenon exists, the supercooling phenomenon is solved by dividing the supercooling structure into a plurality of layers along the axial direction, each layer comprises a complete tubular fuel cell small unit, the particle diameters of all layers are regularly distributed along the axial direction, and the supercooling effect of the fuel inlet section is controlled, so that the supercooling effect of the inlet section can be effectively inhibited, the particle size is reduced, the gap among particles is increased, the reaction efficiency is reduced, the heat absorption is reduced, the power generation efficiency at the inlet needs to be compensated by the rear section, the power generation amount can be reduced compared with the conventional power generation amount which can be distributed under the same volume.
Therefore, there is a need to design a tubular solid oxide fuel cell structure to solve the above problems.
Disclosure of Invention
The invention aims to provide a tubular solid oxide fuel cell structure to solve the problems that the power generation efficiency at an inlet is low, the power generation efficiency needs to be compensated by a later section, and the power generation amount can be distributed compared with the conventional power generation efficiency and is reduced under the same volume.
In order to achieve the purpose, the invention provides the following technical scheme: a tubular solid oxide fuel cell structure comprises a shell, a cathode reaction layer, an electrolyte layer and an anode reaction layer, wherein the anode reaction layer is cylindrical, the electrolyte layer is wrapped on the outer side of the anode reaction layer, the cathode reaction layer is wrapped on the outer side of the electrolyte layer, the cathode reaction layer is arranged in the shell, the shell comprises a middle shell barrel, an end cover and a bottom cover, the end cover and the bottom cover are respectively fixed at the upper end and the lower end of the middle shell barrel, an anode supporting layer is attached to the inside of the anode reaction layer, the anode supporting layer is made of a breathable heat-resistant material and is smooth in surface, a cathode supporting layer is wrapped on the outer surface of the cathode reaction layer, the cathode supporting layer and the anode supporting layer are made of the same material, a supporting barrel is fixed in the middle shell barrel, and a heat regeneration cavity is formed between the supporting barrel and the middle shell barrel, an air passing cavity is formed between the support cylinder and the cathode support layer, and the bottom of the anode support layer is communicated with the heat return cavity.
Preferably, the end cover includes the lid, lid and well casing fixed connection, the top of negative pole supporting layer and positive pole supporting layer all is connected with the lower fixed surface of lid, the center department of lid is fixed with fuel and adds the groove, fuel adds groove and positive pole supporting layer intercommunication, the outside evenly distributed that fuel adds the groove has the inlet duct, the inlet duct with cross the air cavity intercommunication.
Preferably, the upper surface of the bottom cover is an annular bulge, the right side of the annular bulge is higher than the left side, a drain hole is formed in the bottom of the middle shell, and the drain hole is located at the lowest position of the upper surface of the bottom cover.
Preferably, the inner wall of the middle shell cylinder is uniformly distributed with first supporting rings.
Preferably, the supporting cylinder includes solid fixed cylinder and second support ring, the bottom at solid fixed cylinder is spliced to the second support ring, the exhaust hole has evenly been seted up to the surface of second support ring, exhaust hole tilt up, the surface evenly distributed of solid fixed cylinder has the gas guide cylinder, the gas guide cylinder is the annular, just the gas guide cylinder is fixed on the solid fixed cylinder, the inner wall of first support ring is the corrugate, the structure of gas guide cylinder is the same with first support ring structure, just the protruding department of the inner wall of first support ring offsets with the protruding department of the inner wall of gas guide cylinder, the gas pocket is formed with the inner wall depressed part of gas guide cylinder to first support ring.
Preferably, first support ring is the heliciform, just first support ring is the heliciform, the gas cylinder cooperates with first support ring.
Preferably, the cover body is of a hollow structure, and the inner cavity of the cover body is communicated with the heat recovery cavity.
Preferably, the cross section of the inner cavity of the drain hole is in a horizontal S shape, and unidirectional air outlets are uniformly distributed on the outer surface of the cover body.
Compared with the prior art, the invention has the beneficial effects that: the tubular solid oxide fuel cell structure is provided with the heat recovery cavity, so that the problem of supercooling at the inlet is solved without damage, the power generation capacity of the galvanic pile with the same volume is improved, and the strength of the tubular galvanic pile is increased.
(1) The supporting barrel is fixed inside the middle shell barrel, a heat regeneration cavity is formed between the middle shell barrel and the supporting barrel, the heat regeneration cavity is communicated with the bottom of the anode supporting layer, water generated by reaction on the anode reaction layer and carbon dioxide and waste heat are discharged through the bottom of the anode supporting layer, water is gathered on the bottom cover and is discharged through the drain holes, the carbon dioxide and the waste heat are isolated, hot air flows upwards through the heat regeneration cavity and is gathered at the top of the heat regeneration cavity, sufficient heat is provided for an inlet, the problem of supercooling at the inlet is solved, meanwhile, particles do not need to be diluted, and therefore the electric energy production of the same-volume electric pile is improved.
(2) Through evenly being fixed with first support ring on the inner wall at the mesochite section of thick bamboo, evenly being fixed with the gas cylinder at the surface of solid fixed cylinder, first support ring can act as the strengthening rib with the concatenation of gas cylinder, can share the stress in the support cylinder, improves the intensity between shell and the support cylinder, simultaneously, can increase heat conduction area, promotes overheated effect.
Drawings
FIG. 1 is a schematic view of the entire structure of the present invention;
FIG. 2 is a schematic view, partially in section, of the structure of the present invention;
FIG. 3 is a schematic cross-sectional elevation view of the structure of the present invention;
FIG. 4 is an enlarged view of the structure at A in FIG. 3 according to the present invention;
FIG. 5 is a partial top view of the first support ring of FIG. 2 according to the present invention.
In the figure: 1. a housing; 11. a middle shell cylinder; 12. an end cap; 121. a cover body; 122. an air inlet groove; 123. a fuel addition tank; 13. a bottom cover; 14. a drain hole; 15. a first support ring; 2. a support cylinder; 21. a fixed cylinder; 22. an air guide cylinder; 23. a second support ring; 3. a cathode support layer; 4. a cathode reaction layer; 5. an electrolyte layer; 6. an anode reaction layer; 7. an anode support layer.
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.
The first embodiment is as follows:
referring to fig. 1-5, the present invention provides a tubular solid oxide fuel cell structure, including a housing 1, a cathode reaction layer 4, an electrolyte layer 5 and an anode reaction layer 6, wherein the anode reaction layer 6 is cylindrical, the electrolyte layer 5 is wrapped outside the anode reaction layer 6, the cathode reaction layer 4 is wrapped outside the electrolyte layer 5, the cathode reaction layer 4 is disposed inside the housing 1, the housing 1 includes a middle shell 11, an end cap 12 and a bottom cap 13, the end cap 12 and the bottom cap 13 are respectively fixed at the upper and lower ends of the middle shell 11, the anode reaction layer 6 is internally bonded with an anode supporting layer 7, the anode supporting layer 7 is made of air-permeable and heat-resistant material, which is favorable for air-permeable and heat-exhaust, and the surface of the anode supporting layer 7 is smooth and favorable for water drainage, the outer surface of the cathode reaction layer 4 is wrapped with the cathode supporting layer 3, and the cathode supporting layer 3 is the same as the anode supporting layer 7, the cathode supporting layer 3 and the anode supporting layer 7 are respectively used for supporting the cathode reaction layer 4 and the anode reaction layer 6, the supporting cylinder 2 is fixed inside the middle shell cylinder 11, a heat regeneration cavity is formed between the supporting cylinder 2 and the middle shell cylinder 11 and used for recovering waste heat, an air passing cavity is formed between the supporting cylinder 2 and the cathode supporting layer 3 and used for oxygen circulation, and the bottom of the anode supporting layer 7 is communicated with the heat regeneration cavity to discharge waste heat into the heat regeneration cavity.
Further, as shown in fig. 2, the end cap 12 includes a cap body 121, the cap body 121 is fixedly connected to the middle housing 11, the top of the cathode supporting layer 3 and the top of the anode supporting layer 7 are both fixedly connected to the lower surface of the cap body 121, a fuel adding groove 123 is fixed at the center of the cap body 121, the fuel adding groove 123 is communicated with the anode supporting layer 7, air inlet grooves 122 are uniformly distributed at the outer side of the fuel adding groove 123, the air inlet grooves 122 are communicated with the air passing cavity, air is injected into the air passing cavity through the air inlet grooves 122, so that the air passes through the cathode supporting layer 3 and the cathode reaction layer 4, oxygen molecules in the air are between the cathode reaction layer 4 and the electrolyte layer 5, four electrons are obtained from the reaction of the cathode reaction layer 4 and are split into two oxygen ions, which permeate and migrate between the electrolyte layer 5 and the anode reaction layer 6, taking hydrogen fuel as an example, the oxygen ions react with hydrogen, and release water, carbon dioxide and heat to be discharged from the bottom of the anode supporting layer 7, the electrons return to the cathode reaction layer 4 through the anode reaction layer 6 and an external circuit to generate electric energy.
Further, as shown in fig. 2-3, the upper surface of the bottom cover 13 is an annular protrusion, and the right side of the annular protrusion is higher than the left side, so that water is discharged around and collected to the lowest position, and therefore water accumulation is avoided, a drain hole 14 is formed in the bottom of the middle shell 11, and the drain hole 14 is located at the lowest position of the upper surface of the bottom cover 13, so that the collected water is discharged from the drain hole 14.
Further, as shown in fig. 2 to 3, the first support rings 15 are uniformly distributed on the inner wall of the middle shell 11, so as to improve the overall strength of the middle shell 11.
Further, as shown in fig. 2-5, the support cylinder 2 includes a fixed cylinder 21 and a second support ring 23, the second support ring 23 is spliced at the bottom of the fixed cylinder 21, the outer surface of the second support ring 23 is uniformly provided with exhaust holes, the exhaust holes are inclined upwards, so that the air in the air cavity can be favorably diffused into the heat return cavity through the exhaust holes, the waste heat generated during the operation can be blown upwards, the density of the exhaust holes can be diluted from bottom to top, and the exhaust holes are increased because the waste heat at the bottom is the most, so that the air supply is more favorably realized;
the outer surface evenly distributed of solid fixed cylinder 21 has gas cylinder 22, gas cylinder 22 is the annular, and gas cylinder 22 fixes on solid fixed cylinder 21, the inner wall of first support ring 15 is the corrugate, gas cylinder 22's structure and first support ring 15 structure are the same, and the inner wall bellying of first support ring 15 offsets with the inner wall bellying of gas cylinder 22, first support ring 15 forms the gas passing hole with the inner wall bellying of gas cylinder 22, first support ring 15 can act as the strengthening rib with the concatenation of gas cylinder 22, can share the stress in the support cylinder 2, improve the intensity between shell 1 and the support cylinder 2, simultaneously, can increase heat conduction area, promote overheated effect.
Example two:
on the basis of the first embodiment, the difference lies in that: the first support ring 15 is spiral (not shown), the first support ring 15 is spiral, the gas guide cylinder 22 is matched with the first support ring 15, the first support ring 15 and the gas guide cylinder 22 are spirally distributed downwards, so that the top waste heat is absorbed and condensed at the inlet due to reaction, the generated water vapor can flow downwards through the first support ring 15 and the gas guide cylinder 22 which are spirally downward, and the drainage effect is better.
Example three:
on the basis of the first embodiment, the difference lies in that: the lid 121 is hollow structure (not shown), and the inner chamber and the backheat chamber intercommunication of lid 121, makes used heat more do benefit to and assemble around fuel adds groove 123, more does benefit to the reaction heat that provides for fuel adds groove 123 entrance, prevents to appear the supercooling phenomenon.
Example four:
on the basis of the first embodiment, the difference lies in that: the cross section of the inner cavity of the drain hole 14 is in a horizontal S shape (not shown), so that some water is always gathered in the S-shaped bend to avoid the discharge of hot air from the drain hole 14, and one-way air outlet holes (not shown) are uniformly distributed on the outer surface of the cover body 121, so that the discharge of overheated air from the one-way air outlet holes is facilitated.
The working principle is as follows: taking hydrogen fuel as an example, hydrogen fuel is injected into the anode supporting layer 7 through the fuel adding groove 123, air enters the air passing cavity through the air inlet groove 122, the air penetrates through the cathode supporting layer 3 and the cathode reaction layer 4, so that oxygen molecules in the air are between the cathode reaction layer 4 and the electrolyte layer 5, four electrons are obtained from the reaction of the cathode reaction layer 4 and are split into two oxygen ions to permeate and migrate between the electrolyte layer 5 and the anode reaction layer 6, the oxygen ions react with hydrogen, released water, carbon dioxide and heat are discharged from the bottom of the anode supporting layer 7, and the electrons return to the cathode reaction layer 4 through the anode reaction layer 6 and an external circuit to generate electric energy.
Water, carbon dioxide and waste heat generated by the reaction are discharged from the bottom of the anode supporting layer 7, the water is gathered on the bottom cover 13 and discharged through the drain holes 14, and the nitrogen dioxide and the waste heat are isolated by the water gathered around the bottom cover 13, so that hot gas flows upwards through the regenerative cavity and is gathered to the top of the regenerative cavity, sufficient heat is provided for an inlet, and the problem of supercooling at the inlet is solved.
Through evenly being fixed with first support ring 15 on the inner wall of well shell 11, evenly being fixed with gas cylinder 22 at the surface of solid fixed cylinder 21, first support ring 15 can act as the strengthening rib with the concatenation of gas cylinder 22, can share the stress in the support cylinder 2, improves the intensity between shell 1 and the support cylinder 2, simultaneously, can increase heat conduction area, promotes overheated effect.
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 (8)

1. The utility model provides a tubular solid oxide fuel cell structure, includes shell (1), cathode reaction layer (4), electrolyte layer (5) and anode reaction layer (6), anode reaction layer (6) are the cylinder, just electrolyte layer (5) parcel is in the anode reaction layer (6) outside, cathode reaction layer (4) parcel is in the outside of electrolyte layer (5), cathode reaction layer (4) set up in the inside of shell (1), its characterized in that: the shell (1) comprises a middle shell barrel (11), an end cover (12) and a bottom cover (13), the end cover (12) and the bottom cover (13) are respectively fixed at the upper end and the lower end of the middle shell barrel (11), an anode supporting layer (7) is attached to the inside of the anode reaction layer (6), the anode supporting layer (7) is made of a breathable heat-resistant material, the surface of the anode supporting layer (7) is smooth, the outer surface of the cathode reaction layer (4) is wrapped with the cathode supporting layer (3), the cathode supporting layer (3) and the anode supporting layer (7) are made of the same material, a support cylinder (2) is fixed inside the middle shell cylinder (11), a regenerative cavity is formed between the support cylinder (2) and the middle shell cylinder (11), an air passing cavity is formed between the support cylinder (2) and the cathode support layer (3), and the bottom of the anode support layer (7) is communicated with the heat return cavity.
2. The tubular solid oxide fuel cell structure of claim 1, wherein: the end cover (12) comprises a cover body (121), the cover body (121) is fixedly connected with the middle shell barrel (11), the tops of the cathode supporting layer (3) and the anode supporting layer (7) are fixedly connected with the lower surface of the cover body (121), a fuel adding groove (123) is fixed at the center of the cover body (121), the fuel adding groove (123) is communicated with the anode supporting layer (7), air inlet grooves (122) are uniformly distributed on the outer side of the fuel adding groove (123), and the air inlet grooves (122) are communicated with the air passing cavity.
3. The tubular solid oxide fuel cell structure of claim 2, wherein: the upper surface of the bottom cover (13) is in an annular bulge, the right side of the annular bulge is higher than the left side of the annular bulge, a drain hole (14) is formed in the bottom of the middle shell barrel (11), and the drain hole (14) is located at the lowest position of the upper surface of the bottom cover (13).
4. The tubular solid oxide fuel cell structure of claim 1, wherein: the inner wall of the middle shell barrel (11) is uniformly distributed with first supporting rings (15).
5. The tubular solid oxide fuel cell structure of claim 4, wherein: the utility model discloses a support section of thick bamboo, including a fixed cylinder (21) and a second support ring (23), second support ring (23) splice the bottom at a fixed cylinder (21), the exhaust hole has evenly been seted up to the surface of second support ring (23), exhaust hole tilt up, the surface evenly distributed of a fixed cylinder (21) has gas cylinder (22), gas cylinder (22) are the annular, just gas cylinder (22) are fixed on a fixed cylinder (21), the inner wall of first support ring (15) is the corrugate, the structure of gas cylinder (22) is the same with first support ring (15) structure, just the protruding department of inner wall of first support ring (15) offsets with the protruding department of inner wall of gas cylinder (22), the sunken department of inner wall of first support ring (15) and gas cylinder (22) forms the air passing hole.
6. The tubular solid oxide fuel cell structure of claim 5, wherein: first support ring (15) are the heliciform, just first support ring (15) are the heliciform, gas cylinder (22) and first support ring (15) cooperation.
7. The tubular solid oxide fuel cell structure of claim 2, wherein: the cover body (121) is of a hollow structure, and the inner cavity of the cover body (121) is communicated with the heat recovery cavity.
8. The tubular solid oxide fuel cell structure of claim 3, wherein: the cross section of the inner cavity of the drain hole (14) is in a horizontal S shape, and unidirectional air outlets are uniformly distributed on the outer surface of the cover body (121).
CN202111018640.1A 2021-09-01 2021-09-01 Tubular solid oxide fuel cell structure Active CN113471499B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100203399A1 (en) * 2009-02-06 2010-08-12 Protonex Technology Corporation Solid oxide fuel cell systems with hot zones having improved reactant distribution
US20120015258A1 (en) * 2006-07-20 2012-01-19 Modine Manufacturing Company Compact air preheater for solid oxide fuel cell systems
CN111224143A (en) * 2020-01-14 2020-06-02 西安交通大学 Tubular solid oxide fuel cell structure
WO2021030728A1 (en) * 2019-08-14 2021-02-18 Upstart Power, Inc. Sofc-conduction

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120015258A1 (en) * 2006-07-20 2012-01-19 Modine Manufacturing Company Compact air preheater for solid oxide fuel cell systems
US20100203399A1 (en) * 2009-02-06 2010-08-12 Protonex Technology Corporation Solid oxide fuel cell systems with hot zones having improved reactant distribution
WO2021030728A1 (en) * 2019-08-14 2021-02-18 Upstart Power, Inc. Sofc-conduction
CN111224143A (en) * 2020-01-14 2020-06-02 西安交通大学 Tubular solid oxide fuel cell structure

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