Waste heat recovery device for fuel cell

Abstract

The utility model discloses a waste heat recovery device for a fuel cell, which comprises a tank body, a heat conduction shell is fixedly arranged on the inner wall of the tank body and at the bottom, a fuel cell body is arranged in the heat conduction shell, an end socket is fixedly arranged on the upper end face of the tank body, a first conical surface is arranged on the inner wall of the end socket, and a second conical surface is arranged on the inner wall of the first conical surface. A first conical surface is arranged on the outer wall of the fuel cell body, a plug body is arranged in the first conical surface, the plug body sleeves the fuel cell body, a second conical surface is arranged on the outer wall of the plug body, the second conical surface is located in the first conical surface, the second conical surface and the first conical surface abut against each other, and a pressing ring is fixedly arranged on the outer wall of the fuel cell body. Therefore, a user can place the fuel cell body into the heat conduction shell, the pressing ring on the outer wall of the fuel cell body is in contact with the upper end face of the plug body, the second conical surface at the bottom of the plug body enters the first conical surface on the end socket, and then the fastening ring is tightened, so that the sealing effect of the connecting position of the plug body and the end socket is better, and air leakage is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to a waste heat recovery technical field more specifically, it relates to a kind of waste heat recovery device for fuel cell. BACKGROUND

[0002] Fuel cell system generates electric energy directly by catalytic reaction between hydrogen and oxygen, with high efficiency, environmental protection characteristics.Hydrogen fuel cell system mainly includes: electric pile unit, air fuel unit, hydrogen fuel unit, heat management unit, control unit and hydrogen storage unit.Fuel cell produces a large amount of waste heat in hydrogen energy conversion process, needs to be discharged in time, according to refrigerant, can be divided into liquid-cooled fuel cell and air-cooled battery, wherein liquid-cooled fuel cell can heat after the heat energy recovery of liquid, so this kind of form fuel cell is widely used.

[0003] But the installation position sealing effect of the waste heat recovery device of existing liquid-cooled fuel cell is poor, leading to the connection position of fuel cell and recovery device prone to gas leakage phenomenon, leading to the effect of heat recovery is poor;

[0004] And poor heat preservation effect, waste heat recovery device is easily affected by external air, and then leading to the liquid used for heat exchange to appear rapid cooling, influence recovery effect. UTILITY MODEL CONTENT

[0005] (One) technical problem solved

[0006] In view of the problems existing in the prior art, the utility model provides a kind of waste heat recovery device for fuel cell to solve the technical problem that the installation position sealing effect of existing liquid-cooled fuel cell its waste heat recovery device is poor, leading to the connection position of fuel cell and recovery device prone to gas leakage phenomenon mentioned in background art.

[0007] (Two) technical scheme

[0008] To achieve the above object, the utility model provides the following technical scheme: a kind of waste heat recovery device for fuel cell, including tank body, the inner wall of the tank body and located bottom is fixed with heat conduction shell, the inside of the heat conduction shell is equipped with fuel cell body, the upper end surface of the tank body is fixed with end cap, the inner wall of the end cap is equipped with first taper surface, the inside of the first taper surface is equipped with plug body, the plug body is sleeved in the outside of fuel cell body, the outer wall of the plug body is equipped with second taper surface, the second taper surface is located in the inside of first taper surface, and the two are abutted, the outer wall of the fuel cell body is fixed with the pressure ring, the upper end of the pressure ring is in contact with plug body, the outer wall of the end cap is provided with external thread, the connecting position of the end cap and plug body is equipped with fastening ring, the fastening ring is in screw connection with end cap, the inner wall of the fastening ring is in abutment with the upper end surface of pressure ring, the inside of the tank body is provided with heat exchange mechanism.

[0009] The utility model further sets up, the heat exchange mechanism includes the baffle, the baffle sets up the outside end of heat conduction shell, and bottom and the bottom fixed connection of jar body, the baffle and the inner wall of jar body between be provided with heat exchange cavity, the inner wall of baffle is equipped with heat conduction plate, the heat conduction plate is provided with a plurality of and all with the outer wall contact of heat conduction shell, convenient for the waste heat of fuel cell body to absorb.

[0010] The utility model further sets up, the outer wall of baffle is equipped with heat exchange plate correspondingly, the heat exchange plate is provided with a plurality of and all is connected with heat conduction plate, the heat exchange plate all is located the inside of heat exchange cavity, the inner wall of jar body is equipped with the heat preservation layer, convenient for the heat preservation of heat exchange medium, prevent heat loss.

[0011] The utility model further sets up, the lower end surface of jar body is equipped with the external connection disc, the external connection disc is equipped with the mounting hole, the inside of mounting hole all is equipped with lubricating screw, convenient for the fixed installation of the device and external equipment.

[0012] The utility model further sets up, the inside of lubricating screw all is equipped with cavity, the inner wall of cavity is equipped with through -hole, the through -hole is provided with a plurality of and all extends to the outside end of lubricating screw, convenient for the outflow of lubricating oil, prevent rust.

[0013] The utility model further sets up, the upper end surface of lubricating screw all is equipped with the oil hole, the oil hole all communicates with the inside of cavity, the inside of oil hole all is equipped with sealing plug, convenient for adding lubricating oil in the cavity.

[0014] The utility model further sets up, the outer wall of fastening ring is equipped with the anti -skid line, convenient for the disassembly of fastening ring.

[0015] The utility model further sets up, the outer wall of jar body and be located in both sides all is equipped with the circulation pipe, be equipped with the valve on the circulation pipe, convenient for the heat exchange medium guide in jar body.

[0016] (Three) beneficial effects

[0017] Compared with the prior art, the utility model provides a kind of waste heat recovery device for fuel cell, with following beneficial effects:

[0018] 1、By setting the head, plug body and fastening ring, so that the user can put the fuel cell body into the heat conduction shell, and the outer wall of the pressure ring and the upper end of the plug body contact, at this time the second taper of the plug body bottom will enter the first taper of the head, then tighten the fastening ring, so that its inside and the upper end of the pressure ring, at this time the fastening ring will be given by the pressure ring to the plug body downward pressure, so that the first taper and the second taper, so that the connection position of the plug body and the head sealing effect is better, prevent leakage caused by heat medium cooling, and then affect the waste heat recovery effect of fuel cell body.

[0019] 2、By setting the stop ring, heat conduction plate and heat exchange plate, so that the heat conduction plate will heat the waste heat of the fuel cell body through the heat exchange plate into the heat exchange cavity, and then through the upper end of the circulating pipe into the tank, at this time the heat exchange medium will be heated by the heat exchange plate, realize the effect of waste heat recovery, the subsequent can be discharged through the circulating pipe at the bottom of the tank, to facilitate the use of heat exchange medium, and by setting the heat preservation layer on the inner wall of the tank, can reduce the loss of heat, so as to make the recovery effect better.

[0020] 3、By setting the lubricating screw and cavity, so that the user can connect the device with external equipment through the lubricating screw, convenient to use, and also can be added to the inside of the oil hole by pulling out the sealing plug, at this time the lubricating oil will flow out through the hole, to lubricate the connection position of the lubricating screw, prevent rust. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a whole schematic diagram of a fuel cell waste heat recovery device in non-use state;

[0022] Figure 2 It is a schematic diagram of the position of the head, first taper, external disc and mounting hole on the tank;

[0023] Figure 3 It is a schematic diagram of the position of the heat conduction shell, stop ring, heat conduction plate, heat exchange plate and heat preservation layer inside the tank;

[0024] Figure 4 It is an installation explosion diagram of the tank, plug body, fuel cell body and fastening ring;

[0025] Figure 5 It is a sectional view of the parts of the lubricating screw.

[0026] In the figure: 1, tank body; 2, heat conduction shell; 3, fuel cell body; 4, end cover; 5, first taper; 6, plug body; 7, second taper; 8, pressing ring; 9, fastening ring; 10, retaining ring; 11, heat conduction plate; 12, heat exchange plate; 13, heat preservation layer; 14, external connecting disc; 15, mounting hole; 16, lubricating screw; 17, cavity; 18, through hole; 19, oil filling hole; 20, sealing plug; 21, anti-skid pattern; 22, circulating pipe; 23, valve. DETAILED DESCRIPTION

[0027] It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0029] In the present application, unless otherwise stated, the directions used such as "up, down" are generally with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravitational direction; similarly, for the convenience of understanding and description, "left, right" is generally with respect to the left and right shown in the drawings; "inner, outer" refers to the inner and outer with respect to the contour of each component itself, but the above directional words are not used to limit the present application.

[0030] Please refer to Figures 1-5 A waste heat recovery device for fuel cell, comprising a tank body 1, a heat conduction shell 2 is fixedly arranged on the inner wall of the tank body 1 and located at the bottom, a fuel cell body 3 is arranged in the heat conduction shell 2, an end cover 4 is fixedly arranged on the upper end surface of the tank body 1, a first taper 5 is arranged on the inner wall of the end cover 4, a plug body 6 is arranged in the first taper 5, the plug body 6 is sleeved on the outside of the fuel cell body 3, a second taper 7 is arranged on the outer wall of the plug body 6, the second taper 7 is located in the first taper 5 and abuts against the first taper 5, a pressing ring 8 is fixedly arranged on the outer wall of the fuel cell body 3 and contacts the upper end of the plug body 6, external threads are arranged on the outer wall of the end cover 4, a fastening ring 9 is arranged at the connecting position of the end cover 4 and the plug body 6, the fastening ring 9 is threadedly connected with the end cover 4, the inner wall of the fastening ring 9 abuts against the upper end surface of the pressing ring 8, a heat exchange mechanism is arranged in the tank body 1, and an anti-skid pattern 21 is arranged on the outer wall of the fastening ring 9.

[0031] In the embodiment, the heat exchange mechanism comprises a baffle 10 arranged at the outer end of the heat conducting shell 2 and fixedly connected with the bottom of the tank body 1, a heat exchange cavity is arranged between the baffle 10 and the inner wall of the tank body 1, the inner wall of the baffle 10 is provided with heat conducting plates 11, the heat conducting plates 11 are arranged in plurality and are in contact with the outer wall of the heat conducting shell 2, the outer wall of the baffle 10 is correspondingly provided with heat exchange plates 12, the heat exchange plates 12 are arranged in plurality and are connected with the heat conducting plates 11, and the heat exchange plates 12 are all located inside the heat exchange cavity, and the inner wall of the tank body 1 is provided with a heat preservation layer 13.

[0032] More specifically, the user can place the fuel cell body 3 inside the heat conducting shell 2, and make the pressing ring 8 on the outer wall thereof in contact with the upper end surface of the plug body 6, at this time, the second taper surface 7 at the bottom of the plug body 6 will enter the first taper surface 5 on the head 4, then the fastening ring 9 is tightened to make the inside thereof abut against the upper end surface of the pressing ring 8, at this time, the fastening ring 9 will give the plug body 6 a downward pressure through the pressing ring 8 to make the first taper surface 5 and the second taper surface 7 abut against each other, thereby making the connection position of the plug body 6 and the head 4 have a better sealing effect, at this time, the heat conducting plates 11 will conduct the waste heat of the fuel cell body 3 into the heat exchange cavity through the heat exchange plates 12, then the heat exchange medium is injected into the tank body 1 through the circulating pipe 22 at the upper end, at this time, the heat exchange medium will be heated through the action of the heat exchange plates 12 to realize the effect of waste heat recovery, and can be discharged through the circulating pipe 22 at the bottom of the tank body 1 in the subsequent process to facilitate the use of the heat exchange medium, and the heat preservation layer 13 arranged on the inner wall of the tank body 1 can reduce the loss of heat to make the recovery effect better.

[0033] Please refer to Figure 1 and Figure 5 as the embodiment for fixing the recovery device: the lower end surface of the tank body 1 is fixedly provided with an external connecting disc 14, the external connecting disc 14 is provided with mounting holes 15, the inside of the mounting holes 15 is provided with lubricating screws 16, the inside of the lubricating screws 16 is provided with cavities 17, the inner wall of the cavities 17 is provided with through holes 18, the through holes 18 are arranged in plurality and extend to the outer end of the lubricating screws 16, the upper end surface of the lubricating screws 16 is provided with oil filling holes 19, the oil filling holes 19 are in communication with the inside of the cavities 17, and the inside of the oil filling holes 19 is provided with sealing plugs 20.

[0034] Specifically, the user can connect the device with external equipment through the lubricating screws 16 to facilitate use, and can also add lubricating oil into the inside of the oil filling holes 19 by pulling out the sealing plugs 20, at this time, the lubricating oil will flow out through the through holes 18 to lubricate the connection position of the lubricating screws 16 to prevent rust.

[0035] Please refer to Figure 1As a further embodiment of the heat exchange liquid into the tank 1: the outer wall of the tank 1 and located on both sides of the upper and lower provided with a circulating pipe 22, 22 provided with a valve 23.

[0036] Specifically, the heat exchange medium can be injected into the tank 1 through the circulating pipe 22 to recover the waste heat.

[0037] In summary, the overall device in use: the user can put the fuel cell body 3 into the heat-conducting shell 2, and make the outer wall of the compression ring 8 contact with the upper end surface of the plug body 6, at this time the second taper surface 7 at the bottom of the plug body 6 will enter the first taper surface 5 on the head 4, then tighten the fastening ring 9, so that the inside of the fastening ring 9 is in contact with the upper end surface of the compression ring 8, at this time the fastening ring 9 will give the plug body 6 downward pressure through the compression ring 8, so that the first taper surface 5 and the second taper surface 7 are in contact, thereby making the connection position of the plug body 6 and the head 4 more sealed, at this time the heat-conducting plate 11 will guide the waste heat of the fuel cell body 3 into the heat exchange cavity through the heat exchange plate 12, and then inject the heat exchange medium into the tank 1 through the circulating pipe 22 at the upper end, at this time the heat exchange medium will be heated through the action of the heat exchange plate 12, realizing the effect of waste heat recovery, which can be discharged through the circulating pipe 22 at the bottom of the tank 1 for subsequent use of the heat exchange medium, and the heat loss can be reduced by providing a heat preservation layer 13 on the inner wall of the tank 1, so as to make the recovery effect better, the user can connect the device with external equipment through the lubricating screw 16, which is convenient to use, and the lubricating oil can also be added to the inside of the oil filler hole 19 by pulling out the sealing plug 20, at this time the lubricating oil will flow out through the through hole 18 to lubricate the connection position of the lubricating screw 16, preventing rust.

[0038] In all the above-mentioned schemes, the connection between the two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection or other known connection methods, which will not be described here. In the above, whenever it is mentioned that it is fixedly connected, it is preferred to be welded. Although embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A waste heat recovery device for fuel cells, comprising a tank (1), characterized in that: A heat-conducting shell (2) is fixedly provided on the inner wall of the tank (1) and at the bottom. A fuel cell body (3) is provided inside the heat-conducting shell (2). A cap (4) is fixedly provided on the upper end face of the tank (1). A first conical surface (5) is provided on the inner wall of the cap (4). A plug (6) is provided inside the first conical surface (5). The plug (6) is sleeved on the outside of the fuel cell body (3). A second conical surface (7) is provided on the outer wall of the plug (6). The second conical surface (7) is located at... Inside the first conical surface (5), and the two abut against each other, a pressure ring (8) is fixedly provided on the outer wall of the fuel cell body (3), the pressure ring (8) is in contact with the upper end of the plug (6), an external thread is provided on the outer wall of the end cap (4), a fastening ring (9) is provided at the connection position between the end cap (4) and the plug (6), the fastening ring (9) is threadedly connected to the end cap (4), the inner wall of the fastening ring (9) abuts against the upper end face of the pressure ring (8), and a heat exchange mechanism is provided inside the tank (1).

2. The waste heat recovery device for fuel cells according to claim 1, characterized in that: The heat exchange mechanism includes a baffle ring (10), which is disposed at the outer end of the heat-conducting shell (2) and its bottom is fixedly connected to the bottom of the tank (1). A heat exchange cavity is provided between the baffle ring (10) and the inner wall of the tank (1). A heat-conducting plate (11) is provided on the inner wall of the baffle ring (10). Multiple heat-conducting plates (11) are provided and all of them are in contact with the outer wall of the heat-conducting shell (2).

3. The waste heat recovery device for fuel cells according to claim 2, characterized in that: The outer wall of the baffle ring (10) is provided with a heat exchange plate (12), and there are multiple heat exchange plates (12) that are all connected to the heat conduction plate (11). The heat exchange plates (12) are all located inside the heat exchange chamber, and the inner wall of the tank (1) is provided with a heat insulation layer (13).

4. The waste heat recovery device for fuel cells according to claim 1, characterized in that: An external plate (14) is fixedly provided on the lower end face of the tank (1). An installation hole (15) is provided on the external plate (14), and a lubrication screw (16) is provided inside the installation hole (15).

5. A waste heat recovery device for a fuel cell according to claim 4, characterized in that: Each of the lubricating screws (16) has a cavity (17) inside, and a through hole (18) is provided on the inner wall of the cavity (17). There are multiple through holes (18) and they all extend to the outer end of the lubricating screw (16).

6. A waste heat recovery device for a fuel cell according to claim 5, characterized in that: Each of the lubrication screws (16) has an oil filling hole (19) on its upper end face. Each of the oil filling holes (19) is connected to the interior of the cavity (17). Each of the oil filling holes (19) is provided with a sealing plug (20).

7. A waste heat recovery device for a fuel cell according to claim 1, characterized in that: The outer wall of the fastening ring (9) is provided with anti-slip texture (21).

8. A waste heat recovery device for a fuel cell according to claim 1, characterized in that: The outer wall of the tank (1) is provided with circulation pipes (22) on both the upper and lower sides, and valves (23) are provided on the circulation pipes (22).

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