Gas inlet device of solid oxide fuel stack

Abstract

The utility model relates to the technical field of fuel cells, in particular to a solid oxide fuel stack gas inlet device which comprises a gas inlet bin plate, a gas inlet grating plate, a gas inlet end block, a gas inlet pipe and an adjusting assembly, a gas storage cavity is formed in one side of the gas inlet bin plate, the gas inlet grating plate is arranged at the top of the gas storage cavity, and the gas inlet end block is arranged at the other side of the gas inlet bin plate. The air inlet end block is arranged on one side of the air storage cavity and communicates with the air storage cavity, the air inlet pipe is arranged on the top of the air inlet end block and communicates with the air inlet end block, and the adjusting assembly is movably connected to the side, away from the air inlet bin plate, of the air inlet end block and located at the bottom of the air inlet pipe. The utility model aims to adjust the intake resistance of the solid oxide fuel stack.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cells, in particular to an air intake device for a solid oxide fuel cell stack. Background Art

[0002] Solid oxide fuel cell (SOFC) is a high-temperature electrochemical power generation device that uses solid oxide as an electrolyte to directly convert the chemical energy of fuel into electrical energy; a solid oxide fuel cell stack refers to a stack of multiple SOFC units to form an integral structure to increase output power and current density. With the development of SOFC technology, SOFC products have gradually evolved in the direction of high power, high density, and multi-core group combination; in a solid oxide fuel cell stack, the resistance of the gas in the intake pipe directly affects the gas flow and pressure, and thus affects the operating efficiency and performance stability of the fuel cell stack; however, the existing solid oxide fuel cell intake device is usually unable to quickly and effectively adjust the intake air resistance; for this reason, we propose a solid oxide fuel cell intake device. Utility Model Content

[0003] The utility model aims to provide an air intake device for a solid oxide fuel cell stack, which is used to adjust the air intake resistance of the solid oxide fuel cell stack.

[0004] To achieve the above-mentioned purpose, the utility model provides a solid oxide fuel cell stack air intake device, including an air intake bin plate, an air intake grille plate, an air intake end block, an air intake pipe and an adjusting assembly, wherein an air storage cavity is provided on one side of the air intake bin plate, the air intake grille plate is provided at the top of the air storage cavity, the air intake end block is provided on one side of the air storage cavity and is connected with the air storage cavity, the air intake pipe is provided at the top of the air intake end block and is connected with the air intake end block, the adjusting assembly is movably connected to a side of the air intake end block away from the air intake bin plate, and the adjusting assembly is located at the bottom of the air intake pipe.

[0005] Furthermore, the adjustment component includes an adjustment column, and the adjustment column is threadedly connected to the air intake end block through a through hole.

[0006] Furthermore, an extension portion is provided at one end of the adjusting column.

[0007] Furthermore, one end of the extension portion away from the adjusting column is in a cone shape.

[0008] Furthermore, the adjustment assembly also includes a first sealing ring, and the first sealing ring is sleeved on the extension portion.

[0009] Furthermore, mounting grooves are provided around the periphery of the air storage cavity.

[0010] Furthermore, a sealing strip is provided in the installation groove.

[0011] Furthermore, a groove is provided on one side of the inlet grille plate close to the air inlet compartment plate, and a plurality of battery slots are evenly distributed at equal distances on the groove.

[0012] Furthermore, an L-shaped through hole is provided in the air intake compartment plate, and the air storage cavity is connected with the air intake end block through the L-shaped through hole.

[0013] Furthermore, it also includes a second sealing ring, which is arranged at one end of the L-shaped through hole close to the air inlet end block.

[0014] The beneficial effects of the utility model include:

[0015] 1. In the solid oxide fuel cell stack air intake device provided by the utility model, the fuel gas enters the gas storage cavity through the air intake pipe and the air intake end block, and then enters the solid oxide fuel cell stack through the air intake grid plate to complete the intake of the fuel gas; during the air intake process, an adjustment component is set on one side of the air intake end block to change the cross-sectional area of ​​the gas channel in the air intake end block, thereby changing the air intake air resistance in the air intake end block. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments of the utility model will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the overall structure of the solid oxide fuel cell stack air intake device provided in an embodiment of the utility model;

[0018] Figure 2 A schematic diagram of a portion of the structure of the air intake device for a solid oxide fuel cell stack provided in an embodiment of the utility model;

[0019] Figure 3 A schematic diagram of the structure of the adjustment assembly provided in the embodiment of the utility model;

[0020] Figure 4 A schematic diagram of the structure of the grille inlet plate provided in an embodiment of the utility model;

[0021] Figure 5 A schematic diagram of the structure of the air intake end block provided in an embodiment of the utility model;

[0022] Figure 6 A schematic diagram of the structure of the air intake silo provided in an embodiment of the utility model;

[0023] Icons: 100 - air intake plate, 110 - air storage chamber, 120 - mounting groove, 130 - sealing strip, 140 - L-shaped through hole, 150 - second sealing ring, 200 - inlet grille plate, 210 - groove, 220 - battery slot, 300 - air intake end block, 400 - air intake pipe, 500 - adjustment assembly, 510 - adjustment column, 520 - extension, 530 - first sealing ring. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. It should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0026] See also Figures 1 to 6As shown, a solid oxide fuel cell stack air intake device includes an air intake silo plate 100, an air intake grid plate 200, an air intake end block 300, an air intake pipe 400 and an adjusting component 500. A gas storage cavity 110 is provided on one side of the air intake silo plate 100, the air intake grid plate 200 is arranged at the top of the air storage cavity 110, the air intake end block 300 is arranged on one side of the air storage cavity 110 and communicates with the air storage cavity 110, the air intake pipe 400 is arranged at the top of the air intake end block 300 and communicates with the air intake end block 300, the adjusting component 500 is movably connected to a side of the air intake end block 300 away from the air intake silo plate 100 and the adjusting component 500 is located at the bottom of the air intake pipe 400; the size of the air storage cavity 110 can be adjusted according to actual needs, and the air intake silo plate 100 can be adjusted according to actual needs. 00 is fixedly connected to the inlet grid plate 200, and the inlet end block 300 is fixedly connected to the top side of the inlet chamber plate 100; in actual use, the gas storage chamber 110 on the inlet chamber plate 100 is used to buffer the fuel gas, and the fuel gas enters the gas storage chamber 110 through the inlet pipe 400 and the inlet end block 300, and then enters the solid oxide fuel cell stack through the inlet grid plate 200 to complete the intake of the fuel gas; during the intake process, the cross-sectional area of ​​the gas channel in the inlet end block 300 is changed by the adjustment component 500 on one side of the inlet end block 300, thereby changing the intake gas resistance in the inlet end block 300; finally, the intake resistance of each core group in the solid oxide fuel cell stack can be made consistent through the adjustment component 500, ensuring that the fuel gas from the same gas source enters each core group evenly;

[0027] Preferably, the adjustment component 500 includes an adjustment column 510, which is threadedly connected to the intake end block 300 through a through hole, an extension portion 520 is provided at one end of the adjustment column 510, and the end of the extension portion 520 away from the adjustment column 510 is in a cone shape, and the adjustment component 500 also includes a first sealing ring 530, which is sleeved on the extension portion 520; wherein, a straight hole is further provided at the end of the adjustment column 510 away from the extension portion 520 to facilitate the screwing in of the adjustment column 510; the first sealing ring 530 can ensure the sealing between the adjustment component 500 and the intake end block 300, and the cross-sectional area of ​​the gas channel in the intake end block 300 can be changed by adjusting the screwing depth of the adjustment column 510, thereby adjusting the intake air resistance;

[0028] Preferably, the periphery of the gas storage cavity 110 is surrounded by mounting grooves 120, and a sealing strip 130 is provided in the mounting grooves 120; a groove 210 is provided on one side of the inlet grille plate 200 close to the inlet silo plate 100, and a plurality of battery slots 220 are evenly distributed on the groove 210 at equal intervals; specifically, the groove 210 is used to inject sealant; after the fuel cell is inserted into the battery slot 220, the sealant is injected at the bottom of the inlet grille plate 200 to fill the gap between the battery and the battery slot 220 to form a sealed body; after the sealing strip 130 is installed in the mounting groove 120, the bolts between the inlet silo plate 100 and the inlet grille plate 200 are locked to form a sealed chamber, and the fuel gas entering the sealed chamber enters the battery through the small holes on the end face of the battery;

[0029] Preferably, an L-shaped through hole 140 is provided in the air intake chamber plate 100, and the air storage chamber 110 is connected with the air intake end block 300 through the L-shaped through hole 140, and also includes a second sealing ring 150, and the second sealing ring 150 is provided at one end of the L-shaped through hole 140 close to the air intake end block 300; specifically, the input end of the L-shaped through hole 140 is aligned with the output end of the air intake end block 300 and is sealed by the second sealing ring 150, forming a communicating air path between the air intake end block 300 and the air storage chamber 110; the provision of the second sealing ring 150 effectively seals the connection of the L-shaped through hole 140, prevents gas leakage, and ensures that the fuel gas stably enters the interior of the battery.

[0030] In addition to the above description, there are a few points to note:

[0031] (1) The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure, and other structures may refer to the general design;

[0032] (2) In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0033] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A solid oxide fuel cell stack air intake device, characterized in that: The invention comprises an air intake silo plate (100), an air intake grille plate (200), an air intake end block (300), an air intake pipe (400) and an adjusting component (500); an air storage cavity (110) is provided on one side of the air intake silo plate (100); the air intake grille plate (200) is arranged at the top of the air storage cavity (110); the air intake end block (300) is arranged on one side of the air storage cavity (110) and is in communication with the air storage cavity (110); the air intake pipe (400) is arranged at the top of the air intake end block (300) and is in communication with the air intake end block (300); the adjusting component (500) is movably connected to a side of the air intake end block (300) away from the air intake silo plate (100); and the adjusting component (500) is located at the bottom of the air intake pipe (400).

2. The solid oxide fuel cell stack air intake device according to claim 1, characterized in that: The adjustment assembly (500) comprises an adjustment column (510), and the adjustment column (510) is threadedly connected to the air intake end block (300) through a through hole.

3. The solid oxide fuel cell stack air intake device according to claim 2, characterized in that: An extension portion (520) is provided at one end of the adjustment column (510).

4. The solid oxide fuel cell stack air intake device according to claim 3, characterized in that: One end of the extension portion (520) away from the adjustment column (510) is in a cone shape.

5. The solid oxide fuel cell stack air intake device according to claim 3, characterized in that: The adjustment assembly (500) further comprises a first sealing ring (530), wherein the first sealing ring (530) is sleeved on the extension portion (520).

6. The solid oxide fuel cell stack air intake device according to claim 1, characterized in that: The periphery of the air storage cavity (110) is provided with mounting grooves (120).

7. The solid oxide fuel cell stack air intake device according to claim 6, characterized in that: A sealing strip (130) is provided in the installation groove (120).

8. The solid oxide fuel cell stack air intake device according to claim 1, characterized in that: A groove (210) is provided on one side of the inlet grille plate (200) close to the air inlet compartment plate (100), and a plurality of battery slots (220) are evenly distributed at equal intervals on the groove (210).

9. The solid oxide fuel cell stack air intake device according to any one of claims 1 to 8, characterized in that: An L-shaped through hole (140) is provided in the air intake silo plate (100), and the air storage cavity (110) is connected to the air intake end block (300) through the L-shaped through hole (140).

10. The solid oxide fuel cell stack air intake device according to claim 9, characterized in that: It also includes a second sealing ring (150), which is arranged at one end of the L-shaped through hole (140) close to the air intake end block (300).

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