Modular fuel cell integrated hot component and system

Abstract

The utility model discloses an integrated hot component and system for a modularized fuel cell, which relates to the technical field of hot components for fuel cells and comprises a burner, an air preheater, a water reformer and an exhaust cooler which are sequentially arranged from the center to the outer side, the combustor is of a cylinder structure, and the air preheater, the water reformer and the exhaust cooler are of an annular structure and sequentially arranged outside the combustor in a sleeving mode to form a sleeve structure. The water reformer is of an annular inner-outer interlayer structure and comprises an inner-layer reforming area and an outer-layer evaporation area, a partition plate is arranged between the reforming area and the evaporation area for separation, and mixed gas can enter the reforming area from the evaporation area through the partition plate; according to the utility model, the water reformer with an integrated structure is adopted to carry out heat exchange twice in the evaporation area and the reforming area, so that a traditional steam generator and a traditional reformer are replaced, and the problem of gas side leakage can be effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to a fuel cell heat component technical field, concretely relates to a modular fuel cell integrated heat component and system. BACKGROUND

[0002] With the economic development, the demand of human for energy is increasing, but the use of fossil energy brings increasingly serious environmental problems, so the development of new energy is increasingly important today. Hydrogen energy is an important direction of new energy development, taking methane reforming hydrogen or hydrogen-containing synthesis gas as the background, the fuel cell integrated heat component is researched, the device can not only prepare specific flow, temperature hydrogen or hydrogen-containing synthesis gas, but also can prepare specific flow, temperature air.

[0003] The existing Chinese patent CN117878350A discloses a modular fuel cell integrated heat component, system and working method thereof, wherein only one kind of fluid, i.e. mixed gas, exists in the reformer, although cross leakage in the reformer can be avoided, but the heat required in the reforming process is obtained from the heat conduction and heat radiation of the burners and air preheaters on both sides, in addition to the heat carried by the gas, this heat exchange mode has poor controllability, slow response speed and limited adjustment range. Moreover, the steam generator and the reformer are connected in cooperation, since the gas heated in the steam generator and the reformer usually contains hydrogen and methane, etc. The explosion range of these gases is extremely wide, once leakage occurs, explosion danger is easily caused, and the traditional cooperative connection is more likely to cause gas leakage. UTILITY MODEL CONTENT

[0004] In view of one or more deficiencies of the prior art, the utility model provides a modular fuel cell integrated heat component and system, which adopts an integrated structure water reformer to replace the traditional steam generator and reformer, so that the gas side leakage problem can be effectively prevented.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A modular fuel cell integrated heat component comprises a burner, an air preheater, a water reformer and an exhaust cooler arranged in sequence from the center to the outside; the burner adopts a cylindrical structure, the air preheater, the water reformer and the exhaust cooler adopt an annular structure and are sequentially sleeved outside the burner to form a sleeve structure.

[0007] The water reformer is an annular inner-outer sandwich structure, comprising an inner-layer reforming zone and an outer-layer evaporation zone, a partition plate is arranged between the reforming zone and the evaporation zone, and mixed gas enters the reforming zone through the partition plate via a pipeline; a hydrogen-containing synthesis gas outlet is arranged at the top of the reforming zone, and a catalyst is coated on the wall surface of the reforming zone which communicates with the hydrogen-containing synthesis gas outlet, for generating hydrogen-containing synthesis gas after catalytic reforming of the mixed gas.

[0008] Preferably, the air outlet of the exhaust gas cooler is connected with the air preheater, and the battery exhaust gas and the external air are heat-exchanged in the exhaust gas cooler, and the heat-exchanged air enters the air preheater for secondary heat exchange.

[0009] Preferably, the air outlet of the exhaust gas cooler is connected with the air inlet of the air preheater via an air connecting pipe, and the two ends of the air connecting pipe are sealingly connected with the exhaust gas cooler and the air preheater respectively.

[0010] Preferably, a mixer arranged at the top is further included, the mixer comprises three air inlets and one air outlet, the three air inlets are connected with the air preheater, the water reformer and an external pipeline respectively, and air at different temperatures is introduced into the mixer for mixing.

[0011] Preferably, the air preheater, the water reformer and the exhaust gas cooler all adopt a partition wall type heat exchange structure.

[0012] Preferably, the tail gas outlet at the bottom of the combustor is in communication with the tail gas inlet at the bottom of the air preheater.

[0013] Preferably, the evaporation zone of the water reformer is connected with a tail gas connecting pipe, the other end of the tail gas connecting pipe is connected with the air preheater, and the combustion tail gas enters the evaporation zone via the tail gas connecting pipe to exchange heat with the mixed gas formed by the fuel gas and the water.

[0014] Preferably, the reforming zone is provided with a high-temperature air inlet and a low-temperature air inlet at the bottom, the high-temperature air inlet is located inside and directly communicates with the air outlet of one side of the air preheater, and the low-temperature air inlet is externally connected with an air pipeline for introducing low-temperature air; the high-temperature air flowing out of the air preheater flows into the reforming zone from the side air outlet, mixes with the low-temperature air at the bottom of the reforming zone, and exchanges heat with the mixed gas entering the reforming zone from the evaporation zone.

[0015] Preferably, the reforming zone is provided with a hydrogen-containing synthesis gas outlet at the top, and a catalyst is coated on the wall surface of the reforming zone which communicates with the hydrogen-containing synthesis gas outlet, for generating hydrogen-containing synthesis gas after catalytic reforming of the mixed gas.

[0016] Preferably, a temperature sensor is provided at the exhaust outlet of the combustor, the air outlet of the air preheater, the exhaust outlet of the exhaust cooler, the air outlet of the mixer and the hydrogen-containing syngas outlet, the air outlet and the exhaust outlet of the water reformer for monitoring the gas temperature to facilitate the control of the integrated heat components.

[0017] In another aspect, a modular fuel cell system is provided, comprising a fuel cell and the modular fuel cell integrated heat components as claimed in any one of the above, the hydrogen-containing syngas outlet of the water reformer of the gas inlet of the fuel cell is connected, the exhaust outlet of the fuel cell is connected with the exhaust inlet of the exhaust cooler, the air inlet of the fuel cell is connected with the air outlet of the mixer, and the air outlet of the fuel cell is connected with the combustor.

[0018] With the technical scheme, the utility model has the advantages that:

[0019] 1. The water reformer with integrated structure in the utility model carries out twice heat exchange in the evaporation area and the reforming area, generates catalytic reforming hydrogen-containing syngas, replaces the traditional steam generator and reformer, and can effectively prevent gas side leakage problems.

[0020] 2. The utility model discloses a heat exchanger for battery exhaust and low-temperature air, on the one hand, the low-temperature air recovers the battery exhaust heat and improves the system efficiency, and on the other hand, the low-temperature air exchanges heat with the combustion tail gas in the air preheater, which can also reduce the heat exchange capacity in the air preheater, reduce the air preheater heat load, and improve the reliability of the air preheater.

[0021] 3. The integrated heat components of the utility model concentrate the connecting components on the top, so that the bottom surface is neat, and the outer walls of each subcomponent are neat, facilitating processing and assembly.

[0022] 4. The utility model adopts a sleeve type structure design, which reduces the connecting pipeline as much as possible, and the structure between the four components is compact, shortening the connecting pipeline, which helps to improve the power density and reduce the pressure drop loss.

[0023] 5. The utility model adopts a sleeve type structure, the surface temperature of the innermost combustor is the highest, and the surface temperature of the outermost exhaust cooler is the lowest, and the radial temperature of the core heat components shows a decreasing trend as a whole, which helps to reduce heat loss and thermal stress.

[0024] 6. The utility model monitors multiple points of temperature by setting temperature sensors, and based on the temperature monitoring data, the flow and temperature can be accurately adjusted to meet the working condition change requirements.

[0025] 7. The utility model discloses a fuel cell integrated heat component control process schematic diagram. BRIEF DESCRIPTION OF DRAWINGS

[0026] The drawings accompanying the specification provide further understanding of the utility model, illustrate the utility model and its specification, and do not constitute improper limitation to the utility model.

[0027] Figure 1 It is the overall structure schematic drawing of the utility model embodiment;

[0028] Figure 2 It is the burner structure schematic drawing of the utility model embodiment;

[0029] Figure 3 It is the air preheater structure schematic drawing of the utility model embodiment;

[0030] Figure 4 It is the water reformer structure schematic drawing of the utility model embodiment;

[0031] Figure 5 It is the exhaust cooling device structure schematic drawing of the utility model embodiment;

[0032] Figure 6 It is the air connecting pipe structure schematic drawing of the utility model embodiment;

[0033] Figure 7 It is the tail gas connecting pipe structure schematic drawing of the utility model embodiment;

[0034] Figure 8 It is the mixer structure schematic drawing of the utility model embodiment;

[0035] Figure 9 It is the overall structure cross section drawing of the utility model embodiment;

[0036] Figure 10 It is the assembly process schematic drawing of the utility model embodiment;

[0037] Figure 11 It is the fuel cell integrated heat component control process schematic drawing of the utility model embodiment.

[0038] In the drawing: 1, burner;2, air preheater;3, water reformer;4, exhaust cooling device;5, air connecting pipe;6, tail gas connecting pipe;7, mixer;

[0039] 101, air inlet one;102, gas inlet one;103, first temperature sensor;104, tail gas outlet one;105, bolt hole two;106, bolt hole one;

[0040] 201, air outlet one; 202, bolt hole three; 203, second temperature sensor; 204, air outlet two; 205, third temperature sensor; 206, tail gas inlet one; 207, tail gas outlet two; 208, bolt hole four; 209, first connecting bolt; 210, bolt hole five; 211, air inlet two; 212, bolt hole six;

[0041] 301, hydrogen-containing synthesis gas outlet; 302, bolt hole seven; 303, fourth temperature sensor; 304, evaporation zone; 305, reforming zone; 306, fuel gas inlet two; 307, water inlet; 308, fuel gas inlet three; 309, air inlet three; 310, fifth temperature sensor; 311, tail gas outlet three; 312, bolt hole eight; 313, bolt hole nine; 314, air inlet four; 315, bolt hole ten; 316, air outlet three; 317, second connecting bolt; 318, third connecting bolt; 319, bolt hole eleven; 320, tail gas inlet two;

[0042] 401, exhaust gas inlet; 402, bolt hole twelve; 403, air inlet five; 404, bolt hole thirteen; 405, bolt hole fourteen; 406, exhaust gas outlet; 407, sixth temperature sensor; 408, bolt hole fifteen; 409, air outlet four; 410, bolt hole sixteen;

[0043] 501, seventh temperature sensor; 601, eighth temperature sensor;

[0044] 701, air inlet six; 702, bolt hole seventeen; 703, air inlet seven; 704, bolt hole eighteen; 705, air inlet eight; 706, bolt hole nineteen; 707, ninth temperature sensor; 708, bolt hole twenty; 709, air outlet five. DETAILED DESCRIPTION

[0045] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0046] It should be noted that the terminology used herein is for descriptive purposes only and is not intended to limit the exemplary embodiments according to this invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention.

[0047] Example 1

[0048] In one typical embodiment of this application, a modular fuel cell integrated thermal component is provided, such as... Figures 1-11 As shown, it includes a burner 1, an air preheater 2, a water reformer 3, and an exhaust cooler 4 arranged sequentially from the center to the outside; the burner 1 adopts a cylindrical structure, and the air preheater 2, the water reformer 3, and the exhaust cooler 4 adopt an annular structure and are sequentially sleeved on the outside of the burner 1 to form a sleeve structure.

[0049] The water reformer 3 has an annular inner and outer sandwich structure, including an inner reforming zone 305 and an outer evaporation zone 304. A partition plate is provided between the reforming zone and the evaporation zone for separation. The mixed gas can pass through the partition plate through a pipeline from the evaporation zone into the reforming zone. The top of the reforming zone 305 is provided with a hydrogen-containing syngas outlet 301. The wall surface of the reforming zone that is connected to the hydrogen-containing syngas outlet is coated with a catalyst for catalytically reforming the mixed gas to generate hydrogen-containing syngas.

[0050] The air outlet of the exhaust cooler 4 is connected to the air preheater 2. The battery exhaust and the outside air exchange heat in the exhaust cooler 4, and the air after heat exchange enters the air preheater for secondary heat exchange.

[0051] It should be noted that, since the heat sources of the reforming zone and the evaporation zone are different—the heat source of the reforming zone is high-temperature air, while the heat source of the evaporation zone is high-temperature exhaust gas—it is necessary to separate the reforming zone and the evaporation zone to prevent accidents caused by contact between the two heat sources. In this embodiment, a partition plate is set between the reforming zone and the evaporation zone for separation. Both the reforming zone and the evaporation zone are indirect heat exchange structures. Therefore, the mixed gas side of the reforming zone is connected to the gas combustion side of the evaporation zone through pipelines. The mixed gas can enter the reforming zone from the evaporation zone through the pipelines.

[0052] The embodiment also includes an air connecting pipe 5, a tail gas connecting pipe 6 and a mixer 7 for mixing gas, the air connecting pipe 5 is connected with the air preheater 2 and the exhaust cooler 4 for conveying air, the tail gas connecting pipe 6 is connected with the air preheater 2 and the water reformer 3 for conveying combustion tail gas, and the air inlet of the mixer is connected with the air preheater and the water reformer.

[0053] As shown in Figure 1 , the modular fuel cell integrated heat component body of the embodiment includes four sub-components arranged in a sleeve structure, from the center to the outside, they are a burner 1, an air preheater 2, a water reformer 3 and an exhaust cooler 4, in addition, it also includes an air connecting pipe 5 and a tail gas connecting pipe 6 for air flow conduction, and a mixer 7 for gas mixing.

[0054] Specifically, the burner 1 adopts a cylindrical structure and is located at the center of the integrated heat exchange component, the air preheater 2, the water reformer 3 and the exhaust cooler 4 all adopt a ring-shaped shell structure, the inside of which is used as a heat exchange interval, and the heat exchange mode is the common wall heat exchange. The burner 1, the air preheater 2, the water reformer 3 and the exhaust cooler 4 are distributed from inside to outside, and the working temperature gradually decreases from inside to outside along the radial direction, which is conducive to reducing heat loss and thermal stress.

[0055] As shown in Figure 2 , the top of the burner 1 is fixedly provided with an air inlet one 101 for introducing air and a gas inlet one 102 for introducing gas, and the air inlet one 101 and the gas inlet one 102 are both in communication with the inner cavity of the burner. The top of the burner 1 is provided with an outer edge protruding outward to realize sealing with the air preheater, and a plurality of bolt holes two 105 are uniformly arranged along the outer edge circumference for fixed connection with the air preheater 2. A plurality of bolt holes one 106 are arranged on the top outer edge of the air inlet one 101 for sealing and connecting the burner with the external air pipeline. The bottom of the burner 1 is provided with a tail gas outlet one 104 vertically downward, and the combustion tail gas is discharged through the tail gas outlet one 104 and introduced into the air preheater. A first temperature sensor 103 is arranged on the tail gas outlet one 104 for monitoring the outlet temperature of the burner and the working state.

[0056] In the embodiment, the gas and air enter the burner 1 through the gas inlet one 102 and the air inlet one 101 respectively and are mixed and combusted, and the high-temperature combustion tail gas generated after combustion is discharged from the bottom tail gas outlet one 104 and then enters the air preheater 2.

[0057] Specifically, the air preheater is used to complete the heat exchange between cold air and combustion tail gas, as shown in Figure 3 , the bottom of the air preheater 2 is provided with a tail gas inlet one 206, and the exhaust cooler 4 is provided with a tail gas outlet two 204. Figure 9As shown, the burner 1 is entirely placed inside the air preheater. The exhaust gas outlet 104 at the bottom of the burner is directly connected to the exhaust gas inlet 206, allowing the combustion exhaust gas to enter the air preheater. The top of the air preheater has an outward-facing air inlet 211 for introducing low-temperature air into the air preheater. Combined with... Figure 1 As shown, the second air inlet 211 is connected to one end of the air connecting pipe 5, and is also connected to the exhaust cooler 4 through the air connecting pipe 5. The top of the air preheater 2 is provided with a second exhaust outlet 207, through which the low-temperature combustion exhaust gas after heat exchange is discharged from the air preheater 2. The top and bottom of the air preheater 2 are respectively provided with an air outlet 201 and an air outlet 204 for discharging the air after heat exchange. The air outlet 201 is connected to the mixer 7, allowing the air discharged from the top to enter the mixer for further processing. The air outlet 204 is located at the bottom of one side of the air preheater and is connected to the high-temperature air inlet of the water reformer 3. The air discharged from the bottom enters the reforming zone of the water reformer through the air outlet 204 for further heat exchange.

[0058] In this embodiment, the combustion exhaust gas discharged from the burner 1 enters the air preheater 2 through the exhaust gas inlet 206, while low-temperature air enters the air preheater 2 through the air inlet 211. The low-temperature air and the high-temperature combustion exhaust gas undergo indirect heat exchange within the air preheater 2. After the heat exchange is completed, the heated air is split. All the air is discharged from the air preheater 2 through the air outlet 204. A portion of the air directly enters the water reformer 3, while the other portion flows in the cavity between the air preheater 2 and the water reformer 3, and is finally discharged through the top air outlet 201. The exhaust gas after heat exchange is discharged from the air preheater 2 through the exhaust gas outlet 207.

[0059] Furthermore, a third temperature sensor 205 is installed at the exhaust gas inlet 206 to monitor the temperature of the combustion exhaust gas entering the air preheater. A second temperature sensor 203 is installed on the second air outlet 204 at the bottom of the air preheater to monitor the temperature of the air leaving the air preheater and about to enter the water reformer. Additionally, to facilitate the connection between the air preheater and other components, several bolt holes 212 are evenly distributed on the outer edge of the top of the air preheater to achieve a sealed connection between the air preheater 2 and the reformer 3. Bolt holes 202 are provided around the air outlet 201 to seal the connection between the air preheater 2 and the mixer 7. Bolt holes 210 are provided around the air inlet 211 to seal the connection between the air preheater 2 and the air connecting pipe 5. Bolt holes 208 are provided around the exhaust gas outlet 207 to seal the connection between the air preheater 2 and the exhaust gas connecting pipe 6, preventing exhaust gas leakage.

[0060] In addition, in the embodiment, a plurality of first connecting bolts 209 are fixed at the top of the air preheater to correspondingly connect with the second bolt holes 105 on the burner 1, so as to fix and connect the burner 1 and the air preheater 2 and seal them.

[0061] Specifically, the water reformer is an annular inner-outer sandwich structure, which is divided into an inner-layer reforming zone 305 and an outer-layer evaporation zone 304, as shown in the figure. Figure 4 As shown in the figure, the inner ring top of the water reformer is uniformly provided with a plurality of second connecting bolts 317, which cooperate with the bolt holes 212 of the air preheater to fix and connect the water reformer 3 and the air preheater 2. The outer ring top of the water reformer is uniformly provided with a plurality of third connecting bolts 318, which are used to fix and connect the outer-layer exhaust cooler 4.

[0062] As shown in the figure, Figure 4 The bottom of the evaporation zone 304 is communicated with a gas inlet two 306, a gas inlet three 308 and a water inlet 307, wherein the gas inlet two 306 and the gas inlet three 308 are communicated with pipes for inputting gas, and the water inlet 307 is used for inputting water. The top of the evaporation zone is fixedly provided with a tail gas inlet two 320, which is communicated with a tail gas outlet two 207 through a tail gas connecting pipe 6, so that the combustion tail gas discharged from the air preheater enters the evaporation zone of the water reformer. The input gas and water are fully mixed in the evaporation zone 304 and perform inter-wall heat exchange with the combustion tail gas to obtain a mixed gas, which can enter the reforming zone 305 through the partition plate between the evaporation zone and the reforming zone; the combustion tail gas is discharged through a tail gas outlet three 311 at the bottom of the evaporation zone after being subjected to secondary heat exchange in the evaporation zone. The port of the tail gas inlet two 320 faces inward and is provided with a plurality of bolt holes eleven 319 at the edge to realize the sealed connection of the water reformer 3 and the tail gas connecting pipe 6, and then the air preheater is connected through the tail gas connecting pipe. The port edge of the tail gas outlet three 311 is provided with a plurality of bolt holes eight 312 to realize the connection of the water reformer and the external pipeline. At the same time, a fifth temperature sensor 310 is installed on the tail gas outlet three 311 to monitor the temperature of the combustion tail gas leaving the water reformer for the control of the integrated heat component.

[0063] Further, as shown in the figure, Figure 4As shown, the bottom of the inner layer of the reforming zone 305 is provided with an air inlet four 314 as a high-temperature air inlet and an air inlet three 309 as a low-temperature air inlet, which are communicated, wherein the air inlet four 314 is arranged at the bottom of the sidewall of the reforming zone and directly communicated with the air outlet two 204 arranged at the bottom of the air preheater on the inner side to introduce high-temperature air. The air inlet three 309 is fixedly arranged at the bottom of the reforming zone and connected with an external pipeline through the bolt hole nine 313 to introduce low-temperature air. The high-temperature air and the low-temperature air are mixed in the reforming zone and then perform wall-type heat exchange with the mixed gas from the evaporation zone. The exchanged air and the mixed gas are discharged from different outlets. The top of the reforming zone is provided with an air outlet three 316 and a hydrogen-containing synthesis gas outlet 301, which are respectively communicated with the reforming zone. The air outlet three 316 has a port upwardly arranged and connected with the mixer 7 through the bolt hole ten 315 for discharging air. In the reforming zone of the water reformer 3, the wall surface on the side of the mixed gas is coated with a catalyst for catalytic reforming reaction of the mixed gas. After the catalytic reforming, the mixed gas generates hydrogen-containing synthesis gas which is discharged from the hydrogen-containing synthesis gas outlet 301. The hydrogen-containing synthesis gas outlet 301 is provided with the bolt hole seven 302 for connecting an external pipeline, and the fourth temperature sensor 303 is arranged on the hydrogen-containing synthesis gas outlet 301 for monitoring the temperature of the hydrogen-containing synthesis gas leaving the water reformer.

[0064] In the embodiment, the fuel gas enters the water reformer 3 through the fuel gas inlet two 306 and the fuel gas inlet three 308, and the water enters the water reformer 3 through the water inlet 307. The mixed gas formed by the fuel gas and the water exchanges heat with the combustion tail gas in the evaporation zone 304 of the water reformer 3. After the heat exchange ends, the combustion tail gas is discharged from the fuel cell integrated heat component through the tail gas outlet three 311, and the mixed gas formed by the fuel gas and the water vapor after being fully mixed in the evaporation zone 304 enters the reforming zone 305 through the partition plate between the evaporation zone 304 and the reforming zone 305.

[0065] The high-temperature air from the air outlet two 204 of the air preheater 2 and the low-temperature branch air one from the air inlet three 309 are first mixed in the water reformer 3. The mixed air at moderate temperature exchanges heat with the mixed gas from the evaporation zone 304 in the reforming zone 305, and the mixed gas generates hydrogen-containing synthesis gas through catalytic reforming reaction. After the heat exchange ends, the air is discharged from the air outlet three 316 of the water reformer 3, and the generated hydrogen-containing synthesis gas is discharged from the hydrogen-containing synthesis gas outlet 301 of the fuel cell integrated heat component.

[0066] Specifically, the exhaust gas cooler is used to exchange heat and increase the temperature of the dry air entering the integrated heat component, such as Figure 5As shown, the exhaust cooler 4 is of an annular structure, and a plurality of bolt holes sixteen 410 are uniformly arranged on the inner ring of the top portion of the exhaust cooler 4 along the circumference, which are matched with the third connecting bolts 318 to realize the sealed connection of the exhaust cooler and the water reformer. The top portion of the exhaust cooler 4 is provided with the 401 and the air outlet four 409 which are oppositely distributed along the radial direction, and the top portion of the exhaust cooler 4 is provided with the air inlet five 403 and the air outlet four 409 which are oppositely distributed along the radial direction, wherein the port of the 401 is connected with the external pipeline through the bolt hole twelve 402 for the battery exhaust, and the 406 is connected with the external pipeline through the bolt hole fourteen 405 for the battery exhaust after heat exchange and cooling. The sixth temperature sensor 407 is installed on the 406 for monitoring the exhaust temperature of the integrated heat component to facilitate the control of the integrated heat component. The 401 and the 406 are staggered in the radial direction to make the battery exhaust and the low-temperature air fully exchange heat in the exhaust cooler. The air inlet five 403 is outwardly arranged and connected with the external pipeline through the bolt hole thirteen 404, and the port of the air outlet four 409 is inwardly arranged and sealed connected with the air connecting pipe 5 through the bolt hole fifteen 408, and then connected with the air preheater 2 through the air connecting pipe 5, so that the heat-exchanged air can flow into the air preheater for secondary heat exchange.

[0067] In this embodiment, the dry air entering through the air inlet five 403 and the battery exhaust entering through the 401 are subjected to primary heat exchange in the exhaust cooler 4, and after the heat exchange is completed, the battery exhaust and the air flow out of the exhaust cooler 4 through the 406 and the air outlet four 409 respectively.

[0068] Specifically, the two ends of the air connecting pipe 5 are fixedly connected with the air outlet four 409 and the air inlet two 211 respectively, and the two ends of the tail gas connecting pipe 6 are fixedly connected with the tail gas outlet two 207 and the tail gas inlet two 320 respectively. The air connecting pipe 5 and the tail gas connecting pipe 6 are the same in structure and are square tubes, as shown in Figure 6 、 7 As shown, the air connecting pipe 5 is provided with the seventh temperature sensor 501 for monitoring the air temperature flowing into the air preheater 2 from the exhaust cooler 4. The tail gas connecting pipe is provided with the eighth temperature sensor 601 for monitoring the combustion tail gas temperature flowing into the water reformer 3 from the air preheater 2.

[0069] Specifically, the mixer 7 is arranged on the top portion of the integrated heat component for mixing air of different temperatures, as shown in Figure 8As shown, the mixer 7 is provided with three air inlets, namely air inlet six 701, air inlet seven 703 and air inlet eight 705, wherein the air inlet six 701 and the air inlet seven 703 are vertically arranged in parallel, the air inlet six 701 is sealingly connected with the air outlet one 201 of the air preheater by the bolt hole seventeen 702, and the air inlet seven 703 is sealingly connected with the air outlet three 316 of the water reformer. The 305 is arranged on the side of the mixer 7 and is connected with the external air pipeline by the bolt hole nineteen 706 for introducing the low-temperature branch air two. The air outlet five 709 is arranged on the top of the mixer 7, the port of the air outlet five 709 faces upward, and the air outlet five 709 is connected with the external air pipeline by the bolt hole twenty 708 for discharging the mixed air. In addition, the ninth temperature sensor 707 is arranged on the air outlet five 709 for monitoring the air temperature leaving the integrated thermal component so as to control the integrated thermal component.

[0070] In this embodiment, the air inlet six 701 is connected with the air outlet one 201, the air inlet seven 703 is connected with the air outlet three 316, and the air from the air preheater 2 and the water reformer 3 and the branch air two are mixed in the mixer 7 and then discharged from the air outlet five 709 of the integrated thermal component to provide hot air meeting the temperature requirement.

[0071] As shown in Figure 10 The assembly process of the battery integrated thermal component of this embodiment is shown in (a)-(c).

[0072] Firstly, the burner 1 and the air preheater 2 are installed: the air preheater 2 is placed on the ground, the burner 1 is placed into the air preheater 2 from the upper part, the burner 1 and the air preheater 2 are fixed by nuts, the installation is completed, and the result is shown in Figure 10 (c).

[0073] Secondly, the water reformer 3 is installed. As shown in Figure 10 (d), the combination of the burner 1 and the air preheater 2 is placed into the water reformer 3 from the upper part, the air preheater 2 and the water reformer 3 are fixed by nuts, the installation is completed, and the result is shown in Figure 10 (e).

[0074] Thirdly, the exhaust cooler 4 is installed. As shown in Figure 10 (f), the exhaust cooler 4 is sleeved on the outside of the combination of the burner 1, the air preheater 2 and the water reformer 3 from the upper part, the exhaust cooler 4 and the water reformer 3 are fixed by nuts, the installation is completed, and the result is shown in Figure 10 (g).

[0075] Fourthly, the air connection pipe 5 is installed. As shown in Figure 10As shown in (h), use bolts to connect the air connection pipe 5 to the air preheater 2 and the exhaust cooler 4 respectively to complete the installation. The result is as follows: Figure 10 As shown in (h).

[0076] Step 5: Install exhaust connection pipe 6. (For example...) Figure 10 As shown in (i), bolts were used to connect the exhaust gas connection pipe 6 to the air preheater 2 and the water reformer 3 respectively, completing the installation. The result is as follows. Figure 10 As shown in (i).

[0077] Step 6, install mixer 7. (As shown) Figure 10 As shown in (j), the mixer 7 was connected to the air preheater 2 and the water reformer 3 respectively using bolts to complete the installation. The result is as follows. Figure 10 As shown in (j). This completes the installation process of the integrated thermal component.

[0078] Combination Figure 11 As shown, the working principle of this embodiment is as follows:

[0079] The cold air entering the integrated thermal components of the fuel cell is divided into three paths. The main air enters the exhaust cooler 4 via air inlet 5 (403). The first branch air enters the water reformer 3 via air inlet 3 (309). The second branch air enters the mixer 7 via air inlet 8 (705). The flow rates of the three cold air paths are dynamically adjusted according to the operating conditions of the integrated thermal components of the fuel cell. The main air entering through air inlet 5 (403) and the exhaust air entering through air outlet 401 of the exhaust cooler 4 undergo heat exchange once in the exhaust cooler 4. After the heat exchange, the exhaust air and the air flow out of the exhaust cooler 4 through outlet 406 and air outlet 409, respectively.

[0080] When the integrated thermal component of a fuel cell operates independently, the combustion gas required by the burner comes from the outside, and the air required by the burner can be provided by outside air and the hot air discharged from the integrated thermal component of the fuel cell, either alone or together. When the integrated thermal component of the fuel cell operates coupled with other devices such as fuel cells, the fuel required by the burner can be provided by outside gas and (battery) exhaust, either alone or together, and the air required can be provided by outside air and the hot air discharged from the battery, either alone or together.

[0081] The fuel gas and air enter the burner through the fuel gas inlet 102 and the air inlet 101 respectively, the high-temperature combustion tail gas generated by the combustion flows out from the tail gas outlet 104, and then enters the air preheater 2. At the same time, the air flowing out from the air outlet four 409 enters the air preheater 2 through the air connecting pipe 5 and the air inlet two 211, and the combustion tail gas and the air exchange heat in the air preheater 2. After the heat exchange ends, the combustion tail gas enters the evaporation zone 304 of the water reformer 3 through the tail gas outlet two 207, the tail gas connecting pipe 6 and the tail gas inlet two 320. The main path air is discharged from the air outlet two 204 after being secondarily exchanged heat in the air preheater 2, and a part of the air is discharged from the air preheater 2 through the air outlet one 201, and another part enters the reforming zone 305 of the water reformer 3 through the air inlet four 314.

[0082] The fuel gas enters the water reformer 3 through the fuel gas inlet two 306 and the fuel gas inlet three 308, and the water enters the water reformer 3 through the water inlet 307. The fuel gas and the water and the combustion tail gas exchange heat in the evaporation zone 304 of the water reformer 3. After the heat exchange ends, the combustion tail gas is discharged from the fuel cell integrated heat component through the tail gas outlet three 311, and the mixed gas formed by the fuel gas and the water vapor after being fully mixed in the evaporation zone 304 enters the reforming zone 305 through the partition plate between the evaporation zone 304 and the reforming zone 305.

[0083] The high-temperature air from the air outlet two 204 of the air preheater 2 and the low-temperature branch air 1 from the air inlet three 309 are mixed in the water reformer 3 first, the mixed air with moderate temperature and the mixed gas from the evaporation zone exchange heat in the reforming zone 305, and the mixed gas generates the hydrogen-containing synthesis gas by the catalytic reforming reaction. After the heat exchange ends, the air is discharged from the air outlet three 316 of the water reformer 3, and the generated hydrogen-containing synthesis gas is discharged from the fuel cell integrated heat component through the hydrogen-containing synthesis gas outlet 301.

[0084] The air inlet six 701 of the mixer 7 is connected with the air outlet one 201 of the air preheater 2, and the air inlet seven 703 is connected with the air outlet three 316, the air from the air preheater 2, the water reformer 3 and the branch air 2 are mixed in the mixer 7, and then are discharged from the integrated heat component through the air outlet five 709.

[0085] Wherein, when the fuel cell integrated heat component is running alone, the fuel gas required by the combustor comes from the outside fuel gas, and the air required by the combustor can be provided by the outside air and the hot air discharged by the fuel cell integrated heat component alone or jointly. When the fuel cell integrated heat component is coupled with the fuel cell and other devices to run, the fuel required by the combustor can be provided by the outside fuel gas and the (cell) exhaust gas alone or jointly, and the air required by the combustor can be provided by the outside air and the hot air discharged by the cell alone or jointly. The fuel gas and the air are combusted by the combustor to generate high-temperature combustion tail gas, and the high-temperature combustion tail gas is discharged from the integrated heat component after being heat-exchanged by the air preheater and the water reformer in turn. The fuel gas and the water enter the steam generator, are heated and mixed fully in the steam generator, and then enter the reformer, and finally generate hydrogen-containing synthesis gas through catalytic reforming reaction.

[0086] Combining Figure 11 As shown in the figure, the first and third temperature sensors monitor the combustion tail gas temperature T1, T3 at the combustor outlet, which is used to monitor whether the combustion zone is successfully ignited during startup, and to monitor the combustion zone temperature during operation to determine whether extinguishing or over-temperature occurs. The second temperature sensor monitors the air outlet temperature T2 of the air preheater, and if T2 cannot meet the requirements, the fuel gas 1 flow is adjusted until the first temperature sensor value T2 meets the requirements. The fourth temperature sensor monitors the hydrogen-containing synthesis gas temperature T4 leaving the integrated heat component, and if T1 meets the requirements, if T4 does not meet the requirements, the air 2 distribution ratio is adjusted until T4 meets the requirements. The ninth temperature sensor monitors the air temperature T9 leaving the integrated heat component, and if T9 does not meet the requirements, the air 2 distribution ratio is adjusted until T9 meets the requirements. The fourth temperature sensor monitors the hydrogen-containing synthesis gas temperature T4 leaving the reformer, the fifth temperature sensor monitors the tail gas temperature T5 leaving the integrated heat component, the sixth temperature sensor monitors the exhaust gas temperature T6 leaving the integrated heat component, the seventh temperature sensor monitors the air temperature T7 entering the air preheater, and the eighth temperature sensor monitors the combustion tail gas temperature T8 entering the steam generator, which is used to evaluate the working state of the integrated heat component. Therefore, the integrated heat component of the embodiment can realize accurate regulation of flow and temperature to meet the demand of working condition change.

[0087] Embodiment two

[0088] In another typical embodiment of the utility model, a modular fuel cell system is provided, which comprises a fuel cell and the fuel cell integrated heat component of embodiment one, the hydrogen-containing synthesis gas outlet of the water reformer of the fuel gas inlet of the fuel cell is connected, the exhaust gas outlet of the fuel cell is connected with the exhaust gas inlet of the exhaust cooler, the air inlet of the fuel cell is connected with the air outlet of the mixer, and the air outlet of the fuel cell is connected with the combustor.

[0089] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them, and those skilled in the art should understand that the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A modular fuel cell integrated hot component, characterized by, The module includes, from the center to the outside, a burner, an air preheater, a water reformer and an exhaust cooler; the burner adopts a cylindrical structure, the air preheater, the water reformer and the exhaust cooler adopt an annular structure and are sequentially sleeved outside the burner to form a sleeve structure; The water reformer is an annular inner-outer sandwich structure, including a reforming zone in the inner layer and an evaporation zone in the outer layer, a partition plate is arranged between the reforming zone and the evaporation zone, and mixed gas enters the reforming zone through the partition plate through a pipeline; a hydrogen-containing synthesis gas outlet is arranged at the top of the reforming zone, and a catalyst is coated on the wall surface in the reforming zone which communicates with the hydrogen-containing synthesis gas outlet.

2. A modular fuel cell integrated hot component as claimed in claim 1, wherein, The air preheater, the water reformer and the exhaust cooler all adopt a partition wall type heat exchange structure.

3. A modular fuel cell integrated hot component as set forth in claim 1, characterized by The air outlet of the exhaust cooler is connected with the air preheater, and the battery exhaust and the external air are heat exchanged in the exhaust cooler, and the heat exchanged air enters the air preheater for secondary heat exchange.

4. A modular fuel cell integrated hot component as claimed in claim 3, wherein, The air outlet of the exhaust cooler is connected with the air inlet of the air preheater through an air connecting pipe, and the two ends of the air connecting pipe are respectively sealed with the exhaust cooler and the air preheater.

5. A modular fuel cell integrated hot component as set forth in claim 1, characterized by A mixer arranged at the top is further included, the mixer includes three air inlets and one air outlet, the three air inlets are respectively connected with the air preheater, the water reformer and an external pipeline for introducing air at different temperatures for mixing.

6. A modular fuel cell integrated hot component as set out in claim 1, wherein, The exhaust outlet at the bottom of the burner is in communication with the exhaust inlet at the bottom of the air preheater.

7. A modular fuel cell integrated hot component as set out in claim 1, wherein, The evaporation zone of the water reformer is connected with an exhaust connecting pipe, the other end of the exhaust connecting pipe is connected with the air preheater, and the combustion exhaust enters the evaporation zone through the exhaust connecting pipe to exchange heat with the mixed gas formed by the gas and water.

8. A modular fuel cell integrated hot component as claimed in claim 7, wherein, The reforming zone is provided with a high-temperature air inlet and a low-temperature air inlet at the bottom, the high-temperature air inlet is located in the inner portion and directly communicates with the air outlet of one side of the air preheater, and the low-temperature air inlet is externally connected with an air pipeline for introducing low-temperature air.

9. A modular fuel cell integrated hot component as set forth in claim 5, characterized by Temperature sensors are arranged at the exhaust outlet of the burner, the air outlet of the air preheater, the exhaust outlet of the exhaust cooler, the air outlet of the mixer, and the hydrogen-containing synthesis gas outlet, the air outlet and the exhaust outlet of the water reformer.

10. A modular fuel cell system characterized by, The module includes, from the center to the outside, a burner, an air preheater, a water reformer and an exhaust cooler; the burner adopts a cylindrical structure, the air preheater, the water reformer and the exhaust cooler adopt an annular structure and are sequentially sleeved outside the burner to form a sleeve structure;

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