Thermal insulation structure of solid oxide fuel cell

Abstract

The utility model relates to the technical field of solid oxide fuel cells, in particular to a heat preservation structure of a solid oxide fuel cell, which comprises a box body. After the temperature in the box body rises until the battery is started, the heat gathering copper pipe gathers heat and transmits the heat to the thermosensitive spring, the thermosensitive spring is heated and expanded to drive the sliding block to slide upwards, and after the sliding block makes contact with the touch sensitive switch, the vacuumizer is controlled to work to vacuumize the cavity in the box body, so that heat loss is reduced, the negative pressure in the box body drives the circular plate to move leftwards, and the heat loss is reduced. When the battery is started, the tension spring is stretched, the position of the circular plate can be observed through the transparent glass tube, so that the negative pressure state in the box body is judged, the arrangement of the glass fiber layer and the aerogel layer plays a role in heat preservation, the battery body can be preheated, the time wasted by cold start is shortened, meanwhile, negative pressure can be automatically formed in a cavity in the box body after the battery is started, and the service life of the battery is prolonged. The heat preservation effect is achieved, and the heat loss speed is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of solid oxide fuel cells, in particular to a solid oxide fuel cell heat preservation structure. Background Art

[0002] Solid oxide fuel cells refer to fuel cells that use solid oxides as electrolytes and operate at high temperatures. Solid oxide fuel cells usually use solid ceramics such as yttrium oxide and stabilized zirconium oxide as electrolytic cells. Their operating temperatures are between 800 and 1000°C. Solid oxide fuel cells have the characteristics of no moving parts, no noise, clean energy and low pollution. However, existing solid oxide fuels and fixed oxide fuel cells need to be heated from room temperature to their operating temperature during cold start. The battery has the disadvantages of a long start-up time and a limited number of starts, which reduces the service life of the solid oxide fuel cell. In addition, the solid oxide fuel cell is equipped with an exhaust pipe, an air pipe and an intake pipe, which need to be cleaned regularly.

[0003] However, most of the existing solid oxide fuel cells are cold-started, which wastes a lot of time. At the same time, the heat generated by the battery is lost quickly after starting, and it does not have the function of heat preservation. Therefore, we propose a solid oxide fuel cell insulation structure to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a solid oxide fuel cell insulation structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a solid oxide fuel cell insulation structure, comprising a box body, a fixing frame fixedly connected to the bottom inner wall of the box body, a battery body fixedly connected to the bottom inner wall of the fixing frame, a heater fixedly connected to the left side of the fixing frame, a heat-collecting copper tube fixedly connected to the top of the heater, a slider slidably connected to the inner wall of the heat-collecting copper tube, a touch-sensitive switch fixedly connected to the top inner wall of the heat-collecting copper tube, a through hole is opened on the right side of the box body, a transparent glass tube is fixedly connected to the inner wall of the through hole, a circular plate is slidably connected to the inner wall of the transparent glass tube, and circular holes are opened on the left side and upper and lower sides of the transparent glass tube.

[0006] Further preferably, a copper rod is fixedly connected between the heater and the battery body, and the fixing frame is fixedly sleeved on the outside of the copper rod.

[0007] Further preferably, a thermal spring is fixedly connected between the slider and the heater.

[0008] Further preferably, a tension spring is fixedly connected between the circular plate and the right inner wall of the transparent glass tube.

[0009] Further preferably, a vacuum pump is fixedly connected to the top of the box, and an air inlet of the vacuum pump extends into the box.

[0010] Further preferably, an aerogel layer is provided inside the box.

[0011] Further preferably, a glass fiber layer is fixedly connected to the outer side of the aerogel layer.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the utility model first starts the heater, and the heater conducts heat to the fixing frame and the battery body through the copper rod. When the temperature in the box rises to the point where the battery is started, the heat-collecting copper tube gathers the heat and conducts it to the thermistor spring. The thermistor spring expands due to the heat and drives the slider to slide upward. After the slider contacts the touch-sensitive switch, the vacuum pump is controlled to draw the cavity in the box into a vacuum, thereby reducing heat loss. The negative pressure in the box drives the circular plate to move to the left, and the tension spring is stretched. The position of the circular plate can be observed through the transparent glass tube, thereby judging the negative pressure state in the box. The arrangement of the glass fiber layer and the aerogel layer has a heat-insulating effect, thereby being able to preheat the battery body and reduce the time wasted by cold starting. At the same time, after starting, the cavity in the box can automatically form a negative pressure, which has a heat-insulating effect and reduces the heat loss rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the main three-dimensional structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the internal cross-sectional plan structure of the utility model;

[0015] Figure 3 for Figure 2 A schematic diagram of the enlarged three-dimensional structure of the middle A area;

[0016] Figure 4 for Figure 2 Schematic diagram of the enlarged three-dimensional structure of area B in the middle.

[0017] In the figure: 1. box body; 2. aerogel layer; 3. glass fiber layer; 4. fixing frame; 5. battery body; 6. heater; 7. heat-collecting copper tube; 8. slider; 9. thermal spring; 10. touch-sensitive switch; 11. transparent glass tube; 12. round plate; 13. round hole; 14. tension spring; 15. vacuum pump; 16. through hole; 17. copper rod. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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. Example

[0019] See also Figure 1-4 The utility model provides a technical solution: a solid oxide fuel cell insulation structure, including a box body 1, a fixing frame 4 is fixedly connected to the bottom inner wall of the box body 1, a battery body 5 is fixedly connected to the bottom inner wall of the fixing frame 4, a heater 6 is fixedly connected to the left side of the fixing frame 4, a heat-collecting copper tube 7 is fixedly connected to the top of the heater 6, a slider 8 is slidably connected to the inner wall of the heat-collecting copper tube 7, a touch-sensitive switch 10 is fixedly connected to the top inner wall of the heat-collecting copper tube 7, a through hole 16 is opened on the right side of the box body 1, a transparent glass tube 11 is fixedly connected to the inner wall of the through hole 16, a circular plate 12 is slidably connected to the inner wall of the transparent glass tube 11, and circular holes 13 are opened on the left side and the upper and lower sides of the transparent glass tube 11. First, the heater 6 is started, and the heater 6 conducts heat to the fixing frame 4 and the battery through the copper rod 17. Battery body 5, when the temperature in the box 1 rises to the battery start-up, the heat-collecting copper tube 7 gathers the heat and conducts it to the thermistor spring 9. The thermistor spring 9 expands due to the heat and drives the slider 8 to slide upward. After the slider 8 contacts the touch-sensitive switch 10, the vacuum pump 15 is controlled to work to vacuum the cavity in the box 1, thereby reducing heat loss. The negative pressure in the box 1 drives the circular plate 12 to move to the left, and the tension spring 14 is stretched. The position of the circular plate 12 can be observed through the transparent glass tube 11, so as to judge the negative pressure state in the box 1. The setting of the glass fiber layer 3 and the aerogel layer 2 has the effect of heat preservation, so that the battery body 5 can be preheated, reducing the time wasted by cold start. At the same time, after starting, the cavity in the box 1 can automatically form a negative pressure, which has the effect of heat preservation and reduces the heat loss rate.

[0020] In this embodiment, specifically: a copper rod 17 is fixedly connected between the heater 6 and the battery body 5, and the fixing frame 4 is fixedly sleeved on the outside of the copper rod 17. The setting of the copper rod 17 plays a heat conduction effect;

[0021] In this embodiment, specifically: a thermosensitive spring 9 is fixedly connected between the slider 8 and the heater 6, and the thermosensitive spring 9 has the effect of thermal expansion;

[0022] In this embodiment, specifically: a tension spring 14 is fixedly connected between the circular plate 12 and the right inner wall of the transparent glass tube 11, and the setting of the tension spring 14 plays a resetting effect;

[0023] In this embodiment, specifically: a vacuum pump 15 is fixedly connected to the top of the box body 1, and the air inlet of the vacuum pump 15 extends into the box body 1. The arrangement of the vacuum pump 15 plays a vacuuming effect;

[0024] In this embodiment, specifically: an aerogel layer 2 is provided inside the box 1, and the aerogel layer 2 has a heat preservation effect;

[0025] In this embodiment, specifically: a glass fiber layer 3 is fixedly connected to the outer side of the aerogel layer 2, and the arrangement of the glass fiber layer 3 has a heat preservation effect.

[0026] The utility model is in operation: when in use, first start the heater 6, and the heater 6 conducts heat to the fixing frame 4 and the battery body 5 through the copper rod 17. The heater 6 continues to work so that the temperature inside the box 1 gradually increases. Preheating in advance avoids the time wasted due to cold start of the fixed oxide fuel cell. When the temperature inside the box 1 rises to the fixed oxide fuel cell start, the heat-collecting copper tube 7 gathers the heat and conducts it to the thermistor spring 9. The thermistor spring 9 expands due to heat, thereby driving the slider 8 to slide upward on the inner side of the heat-collecting copper tube 7. After the top of the slider 8 contacts the touch-sensitive switch 10, the touch-sensitive switch 10 controls the vacuum pump 15 to work, and the cavity inside the box 1 is evacuated, thereby reducing heat loss. The negative pressure inside the box 1 drives the circular plate 12 to move left, and the tension spring 14 is The circular hole 13 on the transparent glass tube 11 can be connected to the atmosphere, so that the position of the circular plate 12 can be intuitively observed through the transparent glass tube 11, so as to judge the negative pressure state in the box body 1. The glass fiber layer 3 is made of glass fiber, which has good thermal insulation and insulation properties. The setting of the glass fiber layer 3 has the effect of thermal insulation and insulation. The material of the aerogel layer 2 is aerogel, which has good thermal insulation properties. The setting of the aerogel layer 2 has the effect of thermal insulation, thereby forming a solid oxide fuel cell thermal insulation structure, which can preheat the battery body 5, thereby reducing the time wasted by cold start. At the same time, after starting, the cavity in the box body 1 can automatically form a negative pressure, which has the function of thermal insulation and reduces the heat loss rate.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A solid oxide fuel cell insulation structure, comprising a box (1), characterized in that: A fixing frame (4) is fixedly connected to the inner wall at the bottom of the box body (1), a battery body (5) is fixedly connected to the inner wall at the bottom of the fixing frame (4), a heater (6) is fixedly connected to the upper left side of the fixing frame (4), a heat collecting copper tube (7) is fixedly connected to the top of the heater (6), a slider (8) is slidably connected to the inner wall of the heat collecting copper tube (7), a touch-sensitive switch (10) is fixedly connected to the inner wall of the top of the heat collecting copper tube (7), a through hole (16) is opened on the right side of the box body (1), a transparent glass tube (11) is fixedly connected to the inner wall of the through hole (16), a circular plate (12) is slidably connected to the inner wall of the transparent glass tube (11), and circular holes (13) are opened on the left side and upper and lower sides of the transparent glass tube (11).

2. A solid oxide fuel cell insulation structure according to claim 1, characterized in that: A copper rod (17) is fixedly connected between the heater (6) and the battery body (5), and the fixing frame (4) is fixedly sleeved on the outside of the copper rod (17).

3. A solid oxide fuel cell insulation structure according to claim 2, characterized in that: A thermal spring (9) is fixedly connected between the slider (8) and the heater (6).

4. A solid oxide fuel cell insulation structure according to claim 3, characterized in that: A tension spring (14) is fixedly connected between the circular plate (12) and the right inner wall of the transparent glass tube (11).

5. A solid oxide fuel cell insulation structure according to claim 4, characterized in that: A vacuum pump (15) is fixedly connected to the top of the box body (1), and an air inlet of the vacuum pump (15) extends into the box body (1).

6. A solid oxide fuel cell insulation structure according to claim 5, characterized in that: An aerogel layer (2) is provided inside the box (1).

7. A solid oxide fuel cell insulation structure according to claim 6, characterized in that: A glass fiber layer (3) is fixedly connected to the outer side of the aerogel layer (2).

Images