Fuel generator set with waste heat recovery function

Abstract

The utility model relates to the technical field of fuel generators, in particular to a fuel generator set with waste heat recovery, which comprises a generator and a fuel engine, an exhaust manifold and an intake manifold are respectively arranged on two sides of the fuel engine, a condensate water tank for reducing temperature is further arranged at the rear end of the fuel engine, a waste heat recovery component is arranged in the middle of the exhaust manifold, and the waste heat recovery component is arranged in the middle of the intake manifold. The waste heat recovery assembly comprises a heat conduction piece, a thermal temperature difference power generation piece and a heat dissipation piece, the heat conduction piece is fixed to the middle of the exhaust manifold, a copper pipe is arranged in the middle of the heat dissipation piece, and the two ends of the copper pipe are connected with the condensate water tank to form a circular conduction structure, so that the two end faces of the thermal temperature difference power generation piece can form a large temperature difference. Therefore, the thermal temperature difference power generation piece is used for converting the tail gas waste heat of the fuel engine into available electric energy to be stored or used.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel-fired generators, in particular to a fuel-fired generator set with waste heat recovery. Background Art

[0002] A fuel-fired generator is a small-scale power generation device that uses diesel fuel and a diesel engine as a prime mover to generate electricity. The complete unit typically consists of a diesel engine, generator, control box, fuel tank, starting and control batteries, protective devices, and an emergency cabinet.

[0003] Fuel-fired engines generate a large amount of heat during operation. If this heat is directly discharged into the environment, it will not only waste energy but also have a certain impact on the environment. Therefore, the recovery of waste heat from fuel-fired engines is particularly important. Therefore, in view of these current situations, it is urgent to develop a fuel-fired generator set with waste heat recovery to meet the needs of practical use. Utility Model Content

[0004] The purpose of this utility model is to provide a fuel-fired generator set with waste heat recovery, which is used to solve the problem of the majority of the remaining heat being discharged in the form of flue gas, cooling water, etc. during the operation of the fuel-fired engine. Through waste heat recovery technology, this waste heat can be converted into usable electrical energy, thereby improving the overall energy utilization efficiency of the fuel-fired generator.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A fuel generator set with waste heat recovery includes a generator and a fuel engine. An exhaust manifold and an intake manifold are respectively provided on both sides of the fuel engine. A condensing water tank for cooling is also provided at the rear end of the fuel engine. A waste heat recovery component is provided in the middle of the exhaust manifold. The waste heat recovery component includes a heat conductor, a thermoelectric generator sheet and a heat sink. The heat conductor and the heat sink are respectively arranged on the two end surfaces of the thermoelectric generator sheet, and the heat conductor is fixed to the middle of the exhaust manifold. A copper tube is provided in the middle of the heat sink. The two ends of the copper tube are connected to the condensing water tank to form a circulating conductive structure.

[0007] In the above description, as a further solution, there are several heat conducting members, thermoelectric generator sheets and heat sinks, and the heat conducting members, thermoelectric generator sheets and heat sinks are arranged in a ring array structure at the central periphery of the exhaust manifold.

[0008] In the above description, as a further solution, the side of the heat conducting member close to the exhaust manifold is an arc surface matching the exhaust manifold structure, and fixing rings are provided between the plurality of heat conducting members for fixed connection.

[0009] In the above description, as a further solution, the heat sink is a fin structure, and the copper tube passes through the fin structure above the heat sink, and the copper tube is spirally arranged above the surface of the exhaust manifold.

[0010] In the above description, as a further solution, one end of the condensation water tank is the outlet pipe, and the other end of the condensation water tank is the return pipe, and both ends of the copper pipe are conductively connected to the middle part of the outlet pipe.

[0011] In the above description, as a further solution, an air filter is further provided in the middle of the intake manifold, and the air filter is used to remove impurities and moisture in the air.

[0012] In the above description, as a further solution, the crankshaft of the fuel engine is fixedly connected to the input shaft of the generator, and a drive gear plate is provided in the middle of the crankshaft, a starter is provided on one side of the drive gear plate, and the output end of the starter is engaged with the drive gear plate for transmission.

[0013] The beneficial effects produced by the utility model are as follows:

[0014] The present application relates to a fuel-fired power generation unit with waste heat recovery, in which a waste heat recovery assembly consisting of a heat conductor, a thermoelectric generator sheet and a heat sink is sleeved in the middle of the exhaust manifold, which can effectively heat the heat conductor with the exhaust heat of the fuel engine, and at the same time cool the heat sink with the cooling cycle of the condensing water tank, so that a large temperature difference can be formed at the two end surfaces of the thermoelectric generator sheet, thereby utilizing the thermoelectric generator sheet to convert the exhaust waste heat of the fuel engine into usable electrical energy for storage or use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of a fuel-fired generator set with waste heat recovery according to the present invention;

[0016] Figure 2 This is a schematic structural diagram of the waste heat recovery component described in the present utility model;

[0017] In the figure: 1-generator, 2-fuel engine, 3-intake manifold, 31-air filter, 4-exhaust manifold, 5-condensate tank, 51-outlet pipe, 52-return pipe, 6-starter, 7-drive gear plate, 8-waste heat recovery component, 81-heat conducting element, 82-thermoelectric generator sheet, 83-heat dissipation element, 84-sleeve cavity, 85-fixing ring, 9-copper tube. DETAILED DESCRIPTION

[0018] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings. The contents mentioned in the embodiments are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0019] See also Figure 1-2 The embodiment of the invention is a fuel-fired generator set with waste heat recovery, comprising a generator 1 and a fuel-fired engine 2. An exhaust manifold 4 and an intake manifold 3 are provided on either side of the fuel-fired engine 2. A condensation water tank 5 for cooling is provided at the rear end of the fuel-fired engine 2. An air filter 31 is provided in the middle of the intake manifold 3. The air filter 31 is used to remove impurities and moisture in the air. The crankshaft of the fuel-fired engine 2 is fixedly connected to the input shaft of the generator 1, and a drive gear plate 7 is provided in the middle of the crankshaft. A starter 6 is provided on one side of the drive gear plate 7. The output end of the starter 6 is meshed with the drive gear plate 7 for transmission.

[0020] Among them, Figure 1 As shown, a waste heat recovery component 8 is provided in the middle of the exhaust manifold 4. The waste heat recovery component 8 includes a heat conductor 81, a thermoelectric power generation sheet 82 and a heat sink 83. The heat conductor 81 and the heat sink 83 are respectively arranged on the two end surfaces of the thermoelectric power generation sheet 82, and the heat conductor 81 is fixed to the middle of the exhaust manifold 4. A copper tube 9 is provided in the middle of the heat sink 83. The two ends of the copper tube 9 are connected to the condensation water tank 5 to form a circulating conduction structure.

[0021] The waste heat recovery assembly 8 consisting of a heat conductor 81, a thermoelectric power generation sheet 82 and a heat sink 83 is mounted in the middle of the exhaust manifold 4. The exhaust heat of the fuel engine 2 can be effectively used to heat the heat conductor 81. At the same time, the cooling cycle of the condensing water tank 5 is used to cool the heat sink 83, so that a large temperature difference can be formed at the two end surfaces of the thermoelectric power generation sheet 82. The thermoelectric power generation sheet 82 can then be used to convert the exhaust heat of the fuel engine 2 into usable electrical energy for storage or use.

[0022] Specifically, such as Figure 2 As shown, the number of heat conducting members 81, thermoelectric power generation sheets 82 and heat sinks 83 is four, and the heat conducting members 81, thermoelectric power generation sheets 82 and heat sinks 83 are arranged in a ring array structure at the central periphery of the exhaust manifold 4, effectively covering the surface of the exhaust manifold 4 with the thermoelectric power generation sheets 82, making full use of the exhaust waste heat of the fuel engine 2 and improving the thermal energy conversion efficiency.

[0023] Specifically, such as Figure 2 As shown, the side of the heat conductor 81 close to the exhaust manifold 4 is an arc surface that matches the structure of the exhaust manifold 4. A fixing ring 85 is provided between several heat conductors 81 for fixed connection. The heat sink 83 is a fin structure, and the copper tube 9 passes through the fin structure above the heat sink 83. The copper tube 9 is spirally arranged above the surface of the exhaust manifold 4. One end of the condensation water tank 5 is the water outlet pipe 51, and the other end of the condensation water tank 5 is the return water pipe 52. Both ends of the copper tube 9 are conductively connected to the middle part of the water outlet pipe 51.

[0024] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention is disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of the above-disclosed technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technology of the present invention, which do not depart from the content of the technical solution of the present invention, are within the scope of the technical solution of the present invention.

Claims

1. A fuel-fired generator set with waste heat recovery, comprising a generator and a fuel-fired engine, with an exhaust manifold and an intake manifold provided on either side of the fuel-fired engine, and a condensing water tank for cooling the engine at the rear end, characterized in that: A waste heat recovery component is provided in the middle of the exhaust manifold, and the waste heat recovery component includes a heat conductor, a thermoelectric power generation sheet and a heat sink. The heat conductor and the heat sink are respectively arranged on the two end surfaces of the thermoelectric power generation sheet, and the heat conductor is fixed to the middle of the exhaust manifold. A copper tube is provided in the middle of the heat sink, and the two ends of the copper tube are connected to the condensation water tank to form a circulating conduction structure.

2. The fuel-fired generator set with waste heat recovery according to claim 1, characterized in that: There are several heat conducting members, thermoelectric power generation sheets and heat dissipating members, and the heat conducting members, thermoelectric power generation sheets and heat dissipating members are arranged in a ring array structure at the central periphery of the exhaust manifold.

3. The fuel-fired generator set with waste heat recovery according to claim 2, characterized in that: The side of the heat conducting member close to the exhaust manifold is an arc surface matching the structure of the exhaust manifold, and a fixing ring is provided between the plurality of heat conducting members for fixed connection.

4. The fuel-fired generator set with waste heat recovery according to claim 2, characterized in that: The heat sink is a fin-type structure, and the copper tube passes through the fin structure above the heat sink, and the copper tube is arranged in a spiral structure above the surface of the exhaust manifold.

5. The fuel-fired generator set with waste heat recovery according to claim 1, characterized in that: One end of the condensation water tank is a water outlet pipe, and the other end of the condensation water tank is a water return pipe. Both ends of the copper tube are conductively connected to the middle part of the water outlet pipe.

6. A fuel-fired generator set with waste heat recovery according to any one of claims 1 to 5, characterized in that: An air filter is also provided in the middle of the intake manifold, and the air filter is used to absorb impurities and moisture in the air.

7. A fuel-fired generator set with waste heat recovery according to any one of claims 1 to 5, characterized in that: The crankshaft of the fuel engine is fixedly connected to the input shaft of the generator, and a driving gear plate is provided in the middle of the crankshaft. A starter is provided on one side of the driving gear plate, and the output end of the starter is meshed with the driving gear plate for transmission.

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