Solid oxide fuel stack heating device

Abstract

The utility model relates to the technical field of fuel cells, in particular to a solid oxide fuel stack heating device, which comprises a gas outlet plate, a heating bin, a gas inlet component and a heating component, the heating bin is arranged on one side of the gas outlet plate, the gas inlet component is arranged at the bottom of the heating bin and is communicated with the inside of the heating bin, and the heating component is arranged in the gas outlet plate. The heating assembly is arranged in the heating bin and comprises an installation groove and heating wires, the installation groove is annularly distributed in the heating bin in an S shape, and the heating wires are evenly distributed in the length direction of the installation groove. The utility model aims to improve the heat utilization rate of the solid oxide fuel stack heating device.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cells, in particular to a solid oxide fuel cell stack heating device. 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; solid oxide fuel cell stack refers to stacking multiple SOFC units to form an integral structure to increase output power and current density. With the development of SOFC technology, SOFC products are gradually evolving towards high power, high density, and multi-core group combinations; solid oxide fuel cell stacks usually need to preheat the air when inletting, and existing technologies often require the installation of corresponding heating devices to heat the air. Due to the design problems of the heat conduction path of the existing heating device, the heat energy loss during the air heating process is large, and some air cannot be fully heated; therefore, it is necessary to improve the thermal utilization rate of the solid oxide fuel cell stack heating device. Utility Model Content

[0003] The utility model aims to provide a solid oxide fuel cell stack heating device, so as to improve the heat utilization rate of the solid oxide fuel cell stack heating device.

[0004] To achieve the above-mentioned purpose, the utility model provides a solid oxide fuel cell stack heating device, including an air outlet plate, a heating chamber, an air intake assembly and a heating assembly, wherein the heating chamber is arranged on one side of the air outlet plate, the air intake assembly is arranged at the bottom of the heating chamber and is connected to the interior of the heating chamber, the heating assembly is arranged in the heating chamber, the heating assembly includes an installation groove and a heating wire, the installation groove is distributed in an S-shaped ring in the heating chamber, and the heating wire is evenly distributed along the length direction of the installation groove.

[0005] Furthermore, a waist groove is provided in the middle of the air outlet plate.

[0006] Furthermore, a square groove is provided at one end of the waist groove, and the square groove extends to the side of the air outlet plate, and the square groove is provided on the side of the air outlet plate away from the heating chamber.

[0007] Furthermore, the air outlet plate is provided with a plurality of step holes.

[0008] Furthermore, a sealing gasket is provided between the heating chamber and the air outlet plate, and the heating chamber is sealed and connected to the air outlet plate via the sealing gasket.

[0009] Furthermore, the heating wire is spiral-shaped.

[0010] Furthermore, the heating component also includes a wiring terminal, which is arranged on one side of the heating chamber and is electrically connected to the heating wire.

[0011] Furthermore, the air intake assembly includes an air intake block, which is arranged at the bottom of the heating chamber, and the air intake block is connected to the mounting groove through an air intake hole.

[0012] Furthermore, the air intake assembly also includes a sealing ring, which is arranged between the air intake block and the heating chamber.

[0013] Furthermore, the air intake assembly also includes an air intake pipe, which is arranged at one side of the air intake block and communicated with the air intake block.

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

[0015] 1. The solid oxide fuel cell stack heating device provided by the utility model improves the utilization rate of heat energy in the heating chamber by providing S-shaped annularly distributed mounting grooves in the heating chamber and arranging heating wires on the mounting grooves; the heating wires in the heating chamber are in direct contact with the air, and combined with the S-shaped annularly distributed mounting grooves, the air heating time in the heating chamber can be extended and the air heating efficiency can be improved. 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 structure of one side of a solid oxide fuel cell stack heating device provided in an embodiment of the utility model;

[0018] Figure 2 A schematic diagram of the structure of the other side of the solid oxide fuel cell stack heating device provided in an embodiment of the utility model;

[0019] Figure 3 A schematic diagram of a portion of the structure of a solid oxide fuel cell heating device provided in an embodiment of the utility model;

[0020] Icons: 100-air outlet plate, 110-waist groove, 120-square groove, 130-step hole, 200-heating chamber, 210-installation groove, 220-heating wire, 230-sealing gasket, 240-wiring terminal, 300-air inlet block, 310-air inlet hole, 320-air inlet pipe. DETAILED DESCRIPTION

[0021] 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.

[0022] 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.

[0023] See also Figures 1 to 3 As shown, the present disclosure provides a solid oxide fuel cell stack heating device, including an air outlet plate 100, a heating chamber 200, an air intake assembly and a heating assembly, wherein the heating chamber 200 is arranged on one side of the air outlet plate 100, the air intake assembly is arranged at the bottom of the heating chamber 200 and is communicated with the interior of the heating chamber 200, the heating assembly is arranged in the heating chamber 200, the heating assembly includes a mounting groove 210 and a heating wire 220, the mounting groove 210 is distributed in the heating chamber 200 in an S-shaped annular shape, and the heating wire 220 is evenly distributed along the length direction of the mounting groove 210; specifically, the air outlet plate 100 is made of mica board, and the air outlet plate 100 can also be made of 1000 ℃ or above high temperature resistant insulating material, the outlet plate 100 and the heating chamber 200 can be fixedly connected by bolts; the S-shaped annular installation groove 210 can increase the airway length in the heating chamber 200, thereby extending the heating time of the air in the heating chamber 200, and the heating wire 220 in the installation groove 210 is in direct contact with the air, which improves the thermal energy utilization rate in the heating chamber 200, and also effectively reduces the cross-sectional area of ​​the heating wire 220 installation; in actual use, the air enters the heating chamber 200 through the air intake assembly, and after being heated to a predetermined temperature by the heating wire 220 in the heating chamber 200, it enters the core group of the solid oxide fuel cell stack through the outlet plate 100;

[0024] Preferably, a waist groove 110 is provided in the middle of the air outlet plate 100, and a square groove 120 is provided at one end of the waist groove 110, and the square groove 120 extends to the side of the air outlet plate 100, and the square groove 120 is provided on the side of the air outlet plate 100 away from the heating chamber 200, and a plurality of step holes 130 are provided on the air outlet plate 100; wherein, the square groove 120 is used to install a temperature measuring thermocouple so as to detect the temperature of the air output by the air outlet plate 100; a plurality of step holes 130 are used for connecting and fixing the heating device to the solid oxide fuel cell stack mounting structure; the waist groove 110 serves as the air outlet hole of the air outlet plate 100, and its size can be adjusted according to actual needs.

[0025] Preferably, a sealing gasket 230 is further provided between the heating chamber 200 and the air outlet plate 100, and the heating chamber 200 is sealed and connected to the air outlet plate 100 through the sealing gasket 230. The heating wire 220 is spiral-shaped, and the heating assembly also includes a terminal 240. The terminal 240 is provided on one side of the heating chamber 200 and is electrically connected to the heating wire 220. Among them, the provision of the sealing gasket 230 realizes a sealed connection between the heating chamber 200 and the air outlet plate 100, which can effectively prevent heat leakage and gas leakage. The spiral heating wire 220 makes the air heating more uniform, further improving the thermal energy utilization rate inside the heating chamber 200.

[0026] Preferably, the air intake assembly includes an air intake block 300, which is disposed at the bottom of the heating chamber 200, and is connected to the mounting groove 210 through an air intake hole 310. The air intake assembly also includes a sealing ring (not shown in the figure), which is disposed between the air intake block 300 and the heating chamber 200. The air intake assembly also includes an air intake pipe 320, which is disposed on one side of the air intake block 300 and is connected to the air intake block 300; the air intake pipe 320 is welded and fixed to the air intake block 300; in actual use, air enters the heating chamber 200 through the air intake pipe 320 and the air intake block 300 in turn, and the sealing ring can play a sealing role between the air intake block 300 and the heating chamber 200 to prevent gas and heat energy loss.

[0027] In addition to the above description, there are a few points to note:

[0028] (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;

[0029] (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.

[0030] 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 heating device, characterized in that: The invention comprises an air outlet plate (100), a heating chamber (200), an air intake assembly and a heating assembly, wherein the heating chamber (200) is arranged on one side of the air outlet plate (100), the air intake assembly is arranged at the bottom of the heating chamber (200) and is communicated with the interior of the heating chamber (200), the heating assembly is arranged in the heating chamber (200), the heating assembly comprises a mounting groove (210) and a heating wire (220), the mounting groove (210) is distributed in an S-shaped ring in the heating chamber (200), and the heating wire (220) is evenly distributed along the length direction of the mounting groove (210).

2. The solid oxide fuel cell heating device according to claim 1, characterized in that: A waist groove (110) is provided in the middle of the air outlet plate (100).

3. The solid oxide fuel cell stack heating device according to claim 2, characterized in that: A square groove (120) is provided at one end of the waist groove (110), and the square groove (120) extends to the side of the air outlet plate (100). The square groove (120) is provided on a side of the air outlet plate (100) away from the heating chamber (200).

4. The solid oxide fuel cell stack heating device according to claim 1, characterized in that: The air outlet plate (100) is provided with a plurality of step holes (130).

5. The solid oxide fuel cell stack heating device according to claim 1, characterized in that: A sealing gasket (230) is also provided between the heating chamber (200) and the air outlet plate (100), and the heating chamber (200) is sealedly connected to the air outlet plate (100) via the sealing gasket (230).

6. The solid oxide fuel cell stack heating device according to claim 1, characterized in that: The heating wire (220) is in a spiral shape.

7. The solid oxide fuel cell stack heating device according to claim 1, characterized in that: The heating component further comprises a connection terminal (240), wherein the connection terminal (240) is disposed on one side of the heating chamber (200) and is electrically connected to the heating wire (220).

8. The solid oxide fuel cell stack heating device according to any one of claims 1 to 7, characterized in that: The air intake assembly comprises an air intake block (300), wherein the air intake block (300) is arranged at the bottom of the heating chamber (200), and the air intake block (300) is connected to the mounting groove (210) through an air intake hole (310).

9. The solid oxide fuel cell stack heating device according to claim 8, characterized in that: The air intake assembly further comprises a sealing ring, which is arranged between the air intake block (300) and the heating chamber (200).

10. The solid oxide fuel cell stack heating device according to claim 9, characterized in that: The air intake assembly further comprises an air intake pipe (320), wherein the air intake pipe (320) is arranged at one side of the air intake block (300) and is in communication with the air intake block (300).

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