Combined heat and power generation device

Abstract

The utility model discloses a combined heat and power generation device which comprises a frame body. The power generation main body is fixedly mounted on the frame body, a reaction space is formed in the power generation main body, a hydrogen input port and an air input port are formed in the power generation main body, and the hydrogen input port and the air input port are communicated with the reaction space through pipelines; the energy supply mechanism is mounted on the frame body and is used for conveying power generation energy into the reaction space; the energy supply mechanism is arranged to input hydrogen as fuel and oxygen as an oxidant to the power generation main body, so that the hydrogen and the oxygen react with an internal metal electrode material to convert chemical energy into electric energy, and meanwhile, the heat dissipation circulating mechanism is arranged in the power generation main body to utilize generated heat, so that the power generation efficiency is improved. The small circulation pipeline is arranged to recycle the generated low-temperature fluid for heat dissipation of the power generation body and other parts, and the large circulation pipeline is arranged to cool the generated high-temperature fluid.

Description

Technical Field

[0001] This utility model belongs to the field of combined heat and power technology, and specifically relates to a combined heat and power device. Background Technology

[0002] Cogeneration systems are suitable for generating both electricity and heat from a single energy source. Most existing cogeneration systems utilize the combustion of energy to generate electricity and heat. At the same time, the heat recovery rate in cogeneration plants is low, and most of the heat is directly emitted into the atmosphere. The heat recovery rate is low, and it cannot be fully utilized for industrial or domestic water use. Utility Model Content

[0003] In order to solve the above-mentioned problems in the existing technology, the purpose of this utility model is to provide a combined heat and power device.

[0004] The technical solution adopted in this utility model includes:

[0005] Frame;

[0006] The power generation unit is fixedly installed on the frame and forms a reaction space inside it. The power generation unit is provided with a hydrogen inlet and an air inlet, which are connected to the reaction space through pipelines.

[0007] An energy supply mechanism, installed on the frame, is used to supply power generation energy into the reaction space;

[0008] A heat dissipation circulation mechanism is installed on top of the power generation body, which includes a plate heat exchanger and a radiator, both of which are used for heat dissipation of the power generation body.

[0009] A conductive mechanism is used for the output of electrical energy generated by the power generation body;

[0010] An external water tank is connected to the cooling water outlet on the main power generation unit via a pipeline.

[0011] As a preferred embodiment of this utility model, the power generation body is further provided with:

[0012] The cooling water inlet is connected to the external water tank via a pipeline.

[0013] An air outlet is connected to the power generation unit via a pipeline, and a control valve is installed on the pipeline. The air outlet is used for the discharge of hot air from the power generation unit.

[0014] The hydrogen output port has one end connected to the power generation unit via a pipeline, and the other end connected to the hydrogen input port via a pipeline.

[0015] As a preferred embodiment of this utility model, a hydrogen storage body is provided at the bottom of the frame, the hydrogen storage body is connected to the hydrogen inlet, a gas-water separator is provided between the hydrogen inlet and the hydrogen outlet through a pipeline, a hydrogen circulation pump is connected to one side of the gas-water separator, the input end of the gas-water separator is connected to the hydrogen outlet, and its output end is connected to the hydrogen circulation pump.

[0016] As a preferred embodiment of this invention, the power supply mechanism further includes:

[0017] An air filter is fixedly installed on the frame.

[0018] An air compressor is fixedly installed on one side of the air filter and connected to the output end of the air filter via a pipeline;

[0019] The intercooler has its air intake end connected to the air compressor;

[0020] The humidifier has its input end connected to the gas output end of the intercooler, and its output end connected to the air inlet via a pipe.

[0021] As a preferred embodiment of this invention, the heat dissipation circulation mechanism further includes:

[0022] The small circulation pipeline has its two ends connected to the cooling water inlet and the cooling water outlet, respectively.

[0023] The large circulation pipeline is connected to the small circulation pipeline at one end via a thermostat. The plate heat exchanger is located on the large circulation pipeline and is connected to the external water tank. The cold water outlet of the plate heat exchanger is connected to the cooling water inlet.

[0024] As a preferred embodiment of this utility model, the large circulation pipeline flows through the radiator, and an expansion tank is provided on one side of the radiator. The two ends of the expansion tank are respectively connected to the radiator and the large circulation pipeline.

[0025] As a preferred embodiment of this utility model, the conductive mechanism includes a lithium battery module, which is fixedly connected to the bottom of the frame. A converter is connected to the power output terminal of the power generation main body, and the converter is used for output voltage conversion.

[0026] As a preferred embodiment of this invention, a single-chip voltage acquisition device is connected to the power generation body, and the single-chip voltage acquisition device is used to detect the magnitude of the voltage generated by the power generation body.

[0027] The beneficial effects of this utility model are as follows:

[0028] This invention, as a combined heat and power (CHP) device, uses a power supply mechanism to input hydrogen as fuel and oxygen as oxidant into the power generation unit. The hydrogen and oxygen react with internal metal electrode materials to convert chemical energy into electrical energy. Simultaneously, a heat dissipation and circulation mechanism is incorporated into the power generation unit to utilize the generated heat. A small circulation pipeline circulates the generated low-temperature fluid for heat dissipation in the power generation unit and other components, while a large circulation pipeline cools the generated high-temperature fluid. On one hand, the high-temperature fluid is output for industrial or domestic use; on the other hand, the generated high-temperature fluid, combined with the low-temperature fluid input from the cooling water tank, dissipates heat from various working components, effectively improving energy utilization. Attached Figure Description

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0030] Figure 1 This is a schematic diagram of the structure of this utility model;

[0031] Figure 2 This is a partial structural schematic diagram of the present invention;

[0032] Figure 3 This is a utility model Figure 2 Another perspective structural diagram;

[0033] Figure 4 This is a schematic diagram of the structure of this utility model in use;

[0034] Figure 5 This is a schematic diagram of the working process structure of this utility model.

[0035] In the diagram: 1. Frame; 2. Power generation unit; 3. Power supply mechanism; 4. Heat dissipation and circulation mechanism; 5. Conductive mechanism; 6. External water tank; 21. Hydrogen inlet; 22. Air inlet; 23. Cooling water inlet; 24. Cooling water outlet; 25. Air outlet; 27. Hydrogen outlet; 31. Hydrogen storage tank; 32. Gas-water separator; 33. Hydrogen circulation pump; 34. Air filter; 35. Air compressor; 36. Intercooler; 37. Humidifier; 41. Small circulation pipeline; 42. Large circulation pipeline; 411. Thermostat; 421. Plate heat exchanger; 422. Radiator; 423. Expansion tank; 51. Lithium battery module; 52. Converter; 53. Single-chip voltage acquisition instrument. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0038] The following is combined with Figure 1-5 This invention describes a specific embodiment of a combined heat and power (CHP) device, comprising:

[0039] Frame 1;

[0040] The power generation unit 2 utilizes hydrogen as fuel, oxygen as oxidant, and platinum as electrode material. In an acidic electrolyte solution, hydrogen loses electrons in the negative electrode chamber, decomposing into hydrogen ions. These hydrogen ions pass through a proton exchange membrane into the positive electrode chamber, while electrons flow from the negative to the positive electrode, converting chemical energy into electrical energy. Oxygen in the positive electrode chamber gains electrons and combines with hydrogen ions to form water molecules. This device utilizes these water molecules to achieve combined heat and power (CHP). The power generation unit 2 is fixedly installed on the frame 1, forming a reaction space within it. The power generation unit 2 is equipped with a hydrogen inlet 21 and an air inlet 22, which are connected to the reaction space via pipelines. The hydrogen inlet 21 and the air inlet 22 are used for the input of fuel and oxidant, respectively, to achieve CHP.

[0041] The power supply mechanism 3 is installed on the frame 1 and is used to supply power generation energy to the reaction space. The power supply mechanism 3 is used to supply power generation energy to the power generation body 2, which includes air with a certain humidity and a certain pressure and sufficient hydrogen.

[0042] A heat dissipation circulation mechanism 4 is installed on the top of the power generation body 2. The heat dissipation circulation mechanism 4 is used to dissipate heat from the operating equipment. It uses input cooling fluid and heat dissipation components to cool the equipment. The heat dissipation circulation mechanism 4 includes a plate heat exchanger 421 and a radiator 422. Both the plate heat exchanger 421 and the radiator 422 are used to dissipate heat from the power generation body 2. Fluid water circulates inside the radiator 422. On the one hand, the radiator 422 can cool the power generation body 2. On the other hand, while dissipating heat from the power generation body 2, the radiator 422 can also provide industrial and domestic hot water for the fluid carrying heat.

[0043] The conductive mechanism 5 is used for the output of electrical energy generated by the power generation body 2. The conductive mechanism 5 is used to transmit the electrical energy generated by the power generation body 2, including DC power output and transformer power output to meet the requirements of different voltage output values.

[0044] An external water tank 6 is connected to a cooling water outlet 24 on the power generation body 2 via a pipeline. The external water tank 6 can store hot water after heat exchange and cooling water required for heat dissipation of the power generation body 2 and other components. The external water tank 6 can be connected to an external cooling water input to meet the heat dissipation requirements of the power generation body 2 and other components.

[0045] Please refer to Figure 1-2 As shown, the power generation body 2 is also equipped with:

[0046] The cooling water inlet 23 is connected to the external water tank 6 via a pipeline. The cooling water inlet 23 is used to dissipate heat inside the power generation unit 2. The cooling water circulates inside the power generation unit 2, carrying away the heat inside the power generation unit 2 and exchanging heat through the plate heat exchanger 421. The heat is then output to the device through the fluid water to provide hot water for industrial or domestic use. While the plate heat exchanger 421 is exchanging heat, some of the low-temperature fluid continues to circulate to dissipate heat and cool down the power generation unit 2 and other components.

[0047] Air outlet 25 is connected to the power generation body 2 through a pipeline, and a control valve is provided on the pipeline. Air outlet 25 is used for hot air discharge of the power generation body 2, and air outlet 25 is used for exhausting excess or waste air generated during the operation of the power generation body 2.

[0048] The hydrogen outlet 27 is connected at one end to the power generation unit 2 via a pipeline and at the other end to the hydrogen inlet 21 via a pipeline. The hydrogen outlet 27 is used to discharge excess hydrogen or high-temperature hydrogen generated in the power generation unit 2. The discharged hydrogen contains water molecules. The discharged hydrogen first flows through the steam-water separator 32. The steam-water separator 32 is a conventional technology. For details, please refer to the steam-water separator 32 (TI-P023-59). The steam-water separator 32 is used to separate hydrogen from water in the discharged hydrogen.

[0049] Please refer to Figure 3 As shown, the bottom of the frame 1 is provided with a hydrogen storage body 31, which is connected to the hydrogen inlet 21. A vapor-water separator 32 is connected between the hydrogen inlet 21 and the hydrogen outlet 27 through a pipeline. A hydrogen circulation pump 33 is connected to one side of the vapor-water separator 32. The input end of the vapor-water separator 32 is connected to the hydrogen outlet 27, and its output end is connected to the hydrogen circulation pump 33. The middle part of the frame 1 is a hydrogen production device. The produced hydrogen is stored in the hydrogen storage body 31. The hydrogen storage body 31 is connected to the hydrogen inlet 21 through a pipeline to supply hydrogen energy to the power generation unit 2.

[0050] Please refer to Figure 2-5 As shown, the power supply mechanism 3 further includes:

[0051] An air filter 34 is fixedly installed on the frame 1 to filter the oxygen supply and prevent impurities in the air from entering the working parts.

[0052] An air compressor 35 is fixedly installed on one side of the air filter 34 and is connected to the output end of the air filter 34 through a pipeline;

[0053] The intercooler 36 has its air inlet connected to the air compressor 35. The air compressor 35 is used to compress the drawn-in air to ensure that oxygen at a certain pressure is introduced into the power generation unit 2 to meet the power generation needs of the power generation unit 2.

[0054] The humidifier 37 has its input end connected to the gas end of the intercooler 36, and its output end connected to the air inlet 22 through a pipeline. When the generator body 2 is short of water or the humidity is low, it is easy to cause the proton exchange membrane to dehydrate, the proton conduction capacity to decrease, and the ohmic impedance of the fuel cell stack to increase. The above problems can be avoided by using the humidifier 37 to humidify the drawn-in air. The humidifier 37 has a control valve on its output air pipeline to control the gas input.

[0055] Please refer to Figures 2-5 As shown, the heat dissipation circulation mechanism 4 further includes:

[0056] Small circulation pipe 41 is connected at both ends to the cooling water inlet 23 and the cooling water outlet 24, respectively. The starting and ending point of small circulation pipe 41 is the cooling water outlet 24. The fluid output from the generator body 2 through the cooling water outlet 24 is first controlled by thermostat 411. When the temperature of the outflowing cooling fluid is low, thermostat 411 controls the fluid to pass through the small circulation. During this process, the fluid can be heated by the heater to meet the temperature requirements for secondary recycling. After entering the small circulation pipe 41, the fluid flows into the generator body 2 through the cold water inlet for dissipation. For heat cooling, when the outlet temperature of the cooling water is too high, the thermostat 411 controls the fluid to participate in the large circulation pipeline 42 for heat exchange. The fluid first flows through the plate heat exchanger 421 to dissipate the heat in the fluid. Some of the high-temperature fluid flows directly into the external water tank 6 for industrial or domestic hot water supply. Some of the hot water is heated by the plate heat exchanger 421 and continues to circulate through the large circulation pipeline 42. It flows through the radiator 422 and the expansion tank 423 in sequence and is then pumped by the water pump to the cold water inlet to dissipate heat to the generator 2, thus realizing the recycling of the fluid.

[0057] The large circulation pipeline 42 is connected to the small circulation pipeline 41 at one end through a thermostat 411. The plate heat exchanger 421 is located on the large circulation pipeline 42 and is connected to the external water tank 6. The cold water outlet of the plate heat exchanger 421 is connected to the cooling water inlet 23.

[0058] Please refer to Figure 5 As shown, the large circulation pipe 42 flows through the radiator 422. An expansion tank 423 is provided on one side of the radiator 422. The two ends of the expansion tank 423 are connected to the radiator 422 and the large circulation pipe 42, respectively. The expansion tank 423 is used for stabilizing the pressure and replenishing the water for the heat dissipation of the power generation body 2.

[0059] Please refer to Figure 5 As shown, the conductive mechanism 5 includes a lithium battery module 51, which is fixedly connected to the bottom of the frame 1. The power generated by the power generation body 2 can be transmitted and stored in the lithium battery module 51. At the same time, a converter 52 is connected to the power output terminal of the power generation body 2. The converter 52 is used to convert the output voltage to achieve voltage conversion and output to meet the requirements of different voltage outputs.

[0060] Please refer to Figure 5 As shown, a single-chip voltage acquisition instrument 53 is connected to the power generation body 2. The single-chip voltage acquisition instrument 53 is used to detect the magnitude of the voltage generated by the power generation body 2.

[0061] Working principle of this utility model:

[0062] The power supply mechanism 3 supplies oxygen and hydrogen to the power generation body 2, using hydrogen as fuel and oxygen as an oxidant. The metal platinum inside the power generation body 2 is used as the electrode material. In the acidic electrolyte solution, hydrogen loses electrons in the negative electrode chamber and decomposes into hydrogen ions. The hydrogen ions enter the positive electrode chamber through the proton exchange membrane, and electrons flow from the negative electrode to the positive electrode, realizing the conversion of chemical energy into electrical energy. The oxygen in the positive electrode chamber gains electrons and combines with hydrogen ions to form water molecules. In the power supply mechanism 3, the air is filtered by the air filter 34, compressed by the air compressor 35, and humidified by the humidifier 37. Finally, the air is drawn into the power generation body 2 through the air inlet 22 as an oxidant. The hydrogen is extracted from the hydrogen storage body 31 and transported to the power generation body 2 through the hydrogen inlet 21 as fuel. The pipeline connected to the hydrogen outlet 27 on the power generation body 2 is equipped with a gas-water separator 32 and a hydrogen circulation pump 33 to recover and reuse the discharged hydrogen.

[0063] When the power generation unit 2 is working, cooling fluid is used inside the power generation unit 2 to dissipate heat. The heat dissipation of the power generation unit 2 includes a small circulation pipe 41 and a large circulation pipe 42. The small circulation pipe 41 and the large circulation pipe 42 are respectively connected to the cold water outlet and are controlled by a thermostat 411. When the thermostat 411 detects that the temperature of the fluid flowing through it is low, the thermostat 411 controls the fluid to participate in the small circulation, so that the fluid can circulate to the power generation unit 2 to dissipate heat. When the thermostat 411 detects that the temperature of the fluid flowing through it is too high, the fluid participates in the large circulation pipe 42 to cool down. The large circulation pipe 42 is equipped with a plate heat exchanger 421 to exchange heat with the high-temperature fluid. The plate heat exchanger 421 discharges part of the hot water after circulation, and the other part mixes with the cooling water introduced from the external water tank 6 to form a low-temperature fluid, which is transported to the power generation unit 2 to dissipate heat and cool down. The hot water discharged from the plate heat exchanger 421 can be used for industrial or domestic purposes.

[0064] Of the electrical energy generated by the power generation unit 2, some can be sent to the lithium battery module 51 for storage. At the same time, the voltage output value can be changed through the converter 52 to adapt to different voltage output requirements.

[0065] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0066] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A combined heat and power (CHP) device, characterized in that, include: Frame (1); The power generation body (2) is fixedly installed on the frame (1) and forms a reaction space inside it. The power generation body (2) is provided with a hydrogen inlet (21) and an air inlet (22). The hydrogen inlet (21) and the air inlet (22) are connected to the reaction space through pipelines. The power supply mechanism (3) is installed on the frame (1) and is used to supply power generation energy to the reaction space; A heat dissipation circulation mechanism (4) is installed on the top of the power generation body (2), which includes a plate heat exchanger (421) and a radiator (422). Both the plate heat exchanger (421) and the radiator (422) are used for heat dissipation of the power generation body (2). Conductive mechanism (5) is used for the output of electrical energy generated by the power generation body (2); An external water tank (6) is connected to a cooling water outlet (24) on the power generation body (2) via a pipeline.

2. A cogeneration device according to claim 1, characterized in that, The power generation body (2) is also equipped with: Cooling water inlet (23) is connected to the external water tank (6) via a pipeline; An air outlet (25) is connected to the power generation unit (2) via a pipeline, and a control valve is provided on the pipeline. The air outlet (25) is used for the discharge of hot air from the power generation unit (2). The hydrogen outlet (27) is connected at one end to the power generation unit (2) via a pipeline, and at the other end to the hydrogen inlet (21) via a pipeline.

3. A cogeneration device according to claim 2, characterized in that: The frame (1) is provided with a hydrogen storage body (31) at the bottom. The hydrogen storage body (31) is connected to the hydrogen inlet (21). A gas-water separator (32) is provided between the hydrogen inlet (21) and the hydrogen outlet (27) through a pipeline. A hydrogen circulation pump (33) is provided on one side of the gas-water separator (32). The input end of the gas-water separator (32) is connected to the hydrogen outlet (27), and its output end is connected to the hydrogen circulation pump (33).

4. A cogeneration device according to claim 1, characterized in that, The energy supply mechanism (3) also includes: An air filter (34) is fixedly installed on the frame (1); An air compressor (35) is fixedly installed on one side of the air filter (34) and connected to the output end of the air filter (34) through a pipeline; The intercooler (36) has its air intake end connected to the air compressor (35); The humidifier (37) has its input end connected to the gas output end of the intercooler (36), and its output end is connected to the air inlet (22) through a pipeline.

5. A cogeneration device according to claim 2, characterized in that, The heat dissipation circulation mechanism (4) further includes: The small circulation pipe (41) is connected at both ends to the cooling water inlet (23) and the cooling water outlet (24), respectively; The large circulation pipeline (42) is connected to the small circulation pipeline (41) at one end through a thermostat (411). The plate heat exchanger (421) is located on the large circulation pipeline (42) and is connected to the external water tank (6). The cold water outlet of the plate heat exchanger (421) is connected to the cooling water inlet (23).

6. A cogeneration device according to claim 5, characterized in that: The large circulation pipe (42) flows through the radiator (422), and an expansion tank (423) is provided on one side of the radiator (422). The two ends of the expansion tank (423) are connected to the radiator (422) and the large circulation pipe (42) respectively.

7. A cogeneration device according to claim 1, characterized in that: The conductive mechanism (5) includes a lithium battery module (51), which is fixedly connected to the bottom of the frame (1). The power output terminal of the power generation body (2) is connected to a converter (52), which is used for output voltage conversion.

8. A cogeneration device according to claim 1, characterized in that: A single-chip voltage acquisition instrument (53) is connected to the power generation body (2), and the single-chip voltage acquisition instrument (53) is used to detect the magnitude of the voltage generated by the power generation body (2).

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