Direct carbon solid oxide fuel cell stack protection device

Abstract

A direct carbon solid oxide fuel cell stack protection device belongs to the field of direct carbon solid oxide fuel cells and comprises a heat conduction shell made of metal alloy materials, a protection shell is arranged on the periphery of the heat conduction shell, the bottom of the heat conduction shell is fixedly connected with the inner bottom of the protection shell, and a plurality of cooling fins are evenly arranged outside the heat conduction shell. The lower portion of the protective shell is communicated with a first low-temperature nitrogen inlet pipe, a first one-way valve is arranged on the first low-temperature nitrogen inlet pipe, the top of the protective shell is communicated with a gas outlet pipe, and a gas outlet pump is arranged on the gas outlet pipe. According to the direct carbon solid oxide fuel cell, the direct carbon solid oxide fuel cell can be quickly cooled, so that the potential safety hazard when the direct carbon solid oxide fuel cell is used is reduced; and meanwhile, the protection shell can play a protection role when potential safety hazards occur when the direct carbon solid oxide fuel cell is used, so that the direct carbon solid oxide fuel cell can be normally used.

Description

Technical Field

[0001] The utility model belongs to the field of direct carbon solid oxide fuel cells, in particular to a direct carbon solid oxide fuel cell stack protection device. Background Art

[0002] A direct carbon solid oxide fuel cell is a type of fuel that uses solid carbon as fuel and outputs electrical energy through its direct electrochemical oxidation reaction. Its temperature is relatively high during use, generally reaching 500-900°C. Therefore, there are major safety hazards when using direct carbon solid oxide fuel cells, which has led to the inability of direct carbon solid oxide fuel cells to be widely promoted and applied. Utility Model Content

[0003] The utility model provides a direct carbon solid oxide fuel cell stack protection device, which is used to solve the defects in the prior art.

[0004] The utility model is realized through the following technical solutions:

[0005] A direct carbon solid oxide fuel cell stack protection device comprises a heat-conducting shell made of a metal alloy, a protective shell is arranged on the periphery of the heat-conducting shell, the bottom of the heat-conducting shell is fixedly connected to the bottom of the protective shell, a plurality of heat-dissipating fins are evenly arranged on the outside of the heat-conducting shell, the lower part of the protective shell is connected to a first low-temperature nitrogen inlet pipe, a first one-way valve is arranged on the first low-temperature nitrogen inlet pipe, the top of the protective shell is connected to an outlet pipe, and an outlet pump is arranged on the outlet pipe.

[0006] In the direct carbon solid oxide fuel cell stack protection device as described above, a heat insulating layer is arranged on the outside of the heat conducting shell.

[0007] In a direct carbon solid oxide fuel cell stack protection device as described above, a heat dissipation cavity is arranged at the bottom of the protection shell, the heat dissipation cavity is connected with the second low-temperature nitrogen inlet pipe on the same side as the first low-temperature nitrogen inlet pipe, a second one-way valve is arranged on the second low-temperature nitrogen inlet pipe, the bottom of the heat-conducting shell is fixedly connected with the tops of several evenly arranged vertically arranged heat-conducting rods made of metal alloy, the bottom of the heat-conducting rods is fixedly connected with the heat dissipation plate made of metal alloy, and the top of the other side of the heat dissipation cavity is connected with the inside of the protection shell through a through groove.

[0008] In the direct carbon solid oxide fuel cell stack protection device as described above, the number of the heat sink plates is at least two, and adjacent heat sink plates are fixedly connected by a plurality of connecting rods made of metal alloy.

[0009] In the direct carbon solid oxide fuel cell stack protection device as described above, a temperature sensor is arranged inside the outlet pipe.

[0010] The advantages of the utility model are: the utility model can quickly dissipate heat for the direct carbon solid oxide fuel cell, thereby reducing the potential safety hazards when the direct carbon solid oxide fuel cell is used; at the same time, the protective shell can play a protective role when potential safety hazards occur when the direct carbon solid oxide fuel cell is used, thereby allowing the direct carbon solid oxide fuel cell to be used normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 yes Figure 1 A partial enlarged view of part I.

[0014] Figure numerals: 1. heat-conducting shell; 2. protective shell; 3. heat-dissipating fins; 4. first low-temperature nitrogen inlet pipe; 5. first one-way valve; 6. air outlet pipe; 7. air outlet pump; 8. thermal insulation layer; 9. heat-dissipating cavity; 10. second low-temperature nitrogen inlet pipe; 11. second one-way valve; 12. heat-conducting rod; 13. heat-dissipating plate; 14. through groove; 15. connecting rod; 16. temperature sensor. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] A direct carbon solid oxide fuel cell stack protection device comprises a heat-conducting shell 1 made of a metal alloy, a protective shell 2 is arranged on the periphery of the heat-conducting shell 1, the bottom of the heat-conducting shell 1 is fixedly connected to the inner bottom of the protective shell 2, a plurality of heat dissipation fins 3 are evenly arranged on the outside of the heat-conducting shell 1, the lower part of the protective shell 2 is connected to a first low-temperature nitrogen inlet pipe 4, a first one-way valve 5 is arranged on the first low-temperature nitrogen inlet pipe 4, the top of the protective shell 2 is connected to an outlet pipe 6, and an outlet pump 7 is arranged on the outlet pipe 6. In the utility model, the direct carbon solid oxide fuel cell is placed in a heat-conducting shell 1. When in use, low-temperature nitrogen is introduced into the gap between the protective shell 2 and the heat-conducting shell 1 through the first low-temperature nitrogen inlet pipe 4 so that it contacts the heat dissipation fins 3 on the heat-conducting shell 1 to complete rapid heat exchange. At the same time, the nitrogen after the heat exchange is completed is discharged through the outlet pipe 6 by the outlet pump 7, thereby conveniently completing the rapid heat exchange when the direct carbon solid oxide fuel cell is in use, and the protective shell 2 can play a protective role in avoiding safety hazards when the direct carbon solid oxide fuel cell is in use, so that the direct carbon solid oxide fuel cell can be used normally.

[0017] Specifically, since the heat-conducting shell 1 is easily damaged and cracked when it is in direct contact with low-temperature nitrogen for a long time, thereby affecting the use of the heat-conducting shell 1, in order to overcome the above problem, the heat-conducting shell 1 described in this embodiment is provided with a heat-insulating layer 8 on the outside. In the utility model, the heat-insulating layer 8 can effectively prevent the heat-conducting shell 1 from directly contacting the low-temperature nitrogen, so that the heat is only dissipated through the heat-dissipating fins 3, thereby ensuring the long-term and stable use of the heat-conducting shell 1.

[0018] Specifically, since the bottom of the heat-conducting shell 1 cannot dissipate heat, the heat dissipation efficiency is low. In order to overcome the above problem, a heat dissipation cavity 9 is provided at the bottom of the protective shell 2 described in this embodiment. The heat dissipation cavity 9 is connected to the second low-temperature nitrogen inlet pipe 10 on the same side as the first low-temperature nitrogen inlet pipe 4. A second one-way valve 11 is provided on the second low-temperature nitrogen inlet pipe 10. The bottom of the heat-conducting shell 1 is fixedly connected to the tops of several uniformly arranged vertically arranged heat-conducting rods 12 made of metal alloy. The bottom of the heat-conducting rod 12 is fixedly connected to the heat dissipation plate 13 made of metal alloy. The top of the other side of the heat dissipation cavity 9 is connected to the protective shell 2 through a through groove 14. In the utility model, the heat at the bottom of the heat-conducting shell 1 is transferred to the heat dissipation plate 13 in the heat dissipation cavity 9 through the heat-conducting rod 12, and low-temperature nitrogen is introduced into the heat dissipation cavity 9 through the second low-temperature nitrogen inlet pipe 10 for heat dissipation, and then the nitrogen after heat exchange is introduced into the gap between the protective shell 2 and the heat-conducting shell 1 through the through groove 14, and the nitrogen after heat exchange is discharged through the outlet pipe 6 through the outlet pump 7.

[0019] Furthermore, the number of heat dissipation plates 13 described in this embodiment is at least two, and the adjacent heat dissipation plates 13 are fixedly connected by a plurality of metal alloy connecting rods 15. In the utility model, heat dissipation can be quickly completed by using a plurality of heat dissipation plates 13, thereby ensuring rapid heat dissipation when the direct carbon solid oxide fuel cell is used.

[0020] Furthermore, a temperature sensor 16 is provided inside the outlet pipe 6 described in this embodiment. The temperature sensor 16 in the utility model can effectively monitor the nitrogen temperature during heat dissipation, thereby judging the heat dissipation effect. When the temperature obtained by the temperature sensor 16 is higher than a predetermined value, the low-temperature nitrogen flow rate of the first low-temperature nitrogen inlet pipe 4 and the second low-temperature nitrogen inlet pipe 10 will be increased, thereby ensuring the heat dissipation efficiency and the normal use of the direct carbon solid oxide fuel cell.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A direct carbon solid oxide fuel cell stack protection device, characterized in that: The invention comprises a heat-conducting shell (1) made of a metal alloy, a protective shell (2) is arranged on the periphery of the heat-conducting shell (1), the bottom of the heat-conducting shell (1) is fixedly connected to the inner bottom of the protective shell (2), a plurality of heat-dissipating fins (3) are evenly arranged on the outside of the heat-conducting shell (1), the lower part of the protective shell (2) is connected to a first low-temperature nitrogen inlet pipe (4), a first one-way valve (5) is arranged on the first low-temperature nitrogen inlet pipe (4), the top of the protective shell (2) is connected to an outlet pipe (6), and an outlet pump (7) is arranged on the outlet pipe (6).

2. A direct carbon solid oxide fuel cell stack protection device according to claim 1, characterized in that: A heat insulating layer (8) is arranged on the outside of the heat-conducting shell (1).

3. A direct carbon solid oxide fuel cell stack protection device according to claim 1, characterized in that: A heat dissipation cavity (9) is arranged at the bottom of the protective shell (2); the heat dissipation cavity (9) is connected to a second low-temperature nitrogen inlet pipe (10) on the same side as the first low-temperature nitrogen inlet pipe (4); a second one-way valve (11) is arranged on the second low-temperature nitrogen inlet pipe (10); the bottom of the heat-conducting shell (1) is fixedly connected to the tops of a plurality of evenly arranged vertically arranged heat-conducting rods (12) made of a metal alloy; the bottom of the heat-conducting rods (12) is fixedly connected to a heat dissipation plate (13) made of a metal alloy; the top of the other side of the heat dissipation cavity (9) is connected to the inside of the protective shell (2) through a through groove (14).

4. A direct carbon solid oxide fuel cell stack protection device according to claim 3, characterized in that: There are at least two heat dissipation plates (13), and adjacent heat dissipation plates (13) are fixedly connected via a plurality of connecting rods (15) made of metal alloy.

5. A direct carbon solid oxide fuel cell stack protection device according to claim 1, characterized in that: A temperature sensor (16) is arranged inside the air outlet pipe (6).

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