CN107086817B - Bus exhaust pipe temperature difference power generation device - Google Patents
Bus exhaust pipe temperature difference power generation device Download PDFInfo
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- CN107086817B CN107086817B CN201710358844.7A CN201710358844A CN107086817B CN 107086817 B CN107086817 B CN 107086817B CN 201710358844 A CN201710358844 A CN 201710358844A CN 107086817 B CN107086817 B CN 107086817B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
- H02N11/002—Generators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
A cooling water loop is formed by connecting a cooling pipeline and a heat absorption copper pipe, two water pumps are installed in the cooling water loop, an arc-shaped groove for absorbing the waste heat of an automobile tail gas pipe is used as a hot end, a metal plate for absorbing the cold quantity of the cooling loop is used as a cold end, a temperature difference power generation sheet is pressed between the hot end and the cold end, and the heat absorption copper pipe is arranged on the bottom surface of the metal plate. The impeller shafts of the two water pumps extend out of the pump body and are movably arranged on the driving box body, a double-sided rack for receiving the vibration energy of the automobile is meshed with a left gear and a right gear, the left gear is arranged on the fixed shaft through a bearing, and the right gear is arranged on the impeller shaft of one water pump through a one-way bearing. The other right gear is arranged on the impeller shaft of the other water pump through the other one-way gear, and the driving directions of the two one-way bearings are opposite. The device adopts the automobile vibration energy to provide driving force for the water pump impeller, and simultaneously converts the automobile exhaust heat energy into electric energy, and has the characteristics of high energy utilization rate, no pollution and being generally applicable to all vehicles.
Description
Technical Field
The invention relates to automobile exhaust waste heat power generation equipment, in particular to a temperature difference power generation device at the bottom of an exhaust pipe of a bus.
Background
With the rapid development of social economy, buses are becoming popular, so that not only is the traffic pressure of cities relieved, but also the travel of people is greatly facilitated, and the buses are an indispensable part of daily life. However, at the same time, the heat generated by the exhaust pipe in the running process of the bus seriously threatens the normal running of the engine, and the heat is mainly dissipated by utilizing passive heat dissipation modes such as heat dissipation holes and the like in the current market, so that the bus has the defects of too slow heat dissipation, non-uniformity and the like. In fact, the waste heat generated by the exhaust pipe is energy, if the waste heat can be collected and utilized, the environment can be protected, the resources can be saved, and the waste heat can be used for multiple purposes.
According to the search, there is a device for performing thermoelectric power generation by utilizing automobile exhaust waste heat at present, for example, chinese patent application No. 201410137635.6 discloses a vehicle-mounted exhaust waste heat thermoelectric power generation system, which comprises an exhaust gas box, a cooling water tank assembly, a thermoelectric power generation module assembly and a clamping plate, wherein two ends of the exhaust gas box are respectively provided with an intake manifold and an exhaust manifold, and the exhaust gas box comprises a gas box body, a flow dividing fin, a flow guiding fin and a converging fin; the two ends of the cooling water tank assembly are respectively provided with a water inlet manifold and a water outlet manifold, the cooling water tank assembly comprises a plurality of cooling water tanks, and each cooling water tank comprises a water tank body and a guide plate; the hot end of the thermoelectric power generation module assembly is attached to two sides of the tail gas box, the cold end of the thermoelectric power generation module assembly is attached to one side of the cooling water tank assembly, and the thermoelectric power generation module assembly comprises a plurality of thermoelectric power generation modules; the clamping plate is arranged outside the cooling water tank assembly, and two ends of the clamping plate are locked through bolts.
For another example, the application discloses a device for performing thermoelectric power generation by utilizing automobile exhaust waste heat, which comprises an exhaust passage, a thermoelectric module and a cooling system, wherein an air inlet of the exhaust passage is communicated with an engine exhaust pipe, an air outlet of the exhaust passage is communicated with the automobile exhaust pipe, a high-temperature end of the thermoelectric module is tightly attached to the outer wall of the exhaust passage, a low-temperature end of the thermoelectric module is cooled by the cooling system, and electric power generated by the thermoelectric module is transmitted to a vehicle-mounted storage battery.
In the two technical schemes of the device for carrying out thermoelectric power generation by utilizing the waste heat of the tail gas, the device of the first scheme is arranged near the automobile engine and is close to the engine, and the design can have adverse effects on the normal heat dissipation of the engine, so that the safety performance is lower and the installability is poor; for the second technical scheme, the water pump of the water cooling system needs to provide power additionally to consume energy, and the water cooling system of the device skillfully utilizes the vibration of the vehicle body in the running process of the vehicle to drive the cooling water to circulate, so that the device is more energy-saving.
The two schemes for carrying out thermoelectric power generation by utilizing the waste heat of the automobile tail gas do not have the design of driving cooling water circulation by utilizing the running vibration of the automobile body.
Disclosure of Invention
The invention aims to provide a bus exhaust pipe temperature difference power generation device with high comprehensive energy utilization rate, which aims to convert heat energy of a bus exhaust pipe into electric energy, and simultaneously convert vibration energy in the running process of an automobile into cooling liquid circulating power without consuming external electric energy.
The purpose of the invention is realized in the following way: the cooling water inlet and outlet ends of the heat absorption copper plate with a liquid circulation cavity or the two ends of the cooling water inlet and outlet of the heat absorption copper plate with a liquid circulation cavity are respectively connected with the two ends of a U-shaped cooling pipeline to form a cooling water loop; the heat absorption copper pipe is fixed on the bottom surface of the metal plate; the thermoelectric generation piece is in pressure connection between the metal plate and the bottom plane of the copper arc-shaped groove above the metal plate, or in pressure connection between the heat absorption copper plate and the bottom plane of the copper arc-shaped groove, and the inner curved surface of the arc-shaped groove used for fixing the bus tail gas pipe is identical with the shape of the bus tail gas pipe; a first water pump and a second water pump are respectively arranged on an inlet pipe and an outlet pipe of a cooling pipeline in the cooling water loop; the driving mechanism of the first water pump is as follows: the double-sided rack is arranged below the bus suspension and contacted with the suspension is meshed with the left gear and the right gear respectively, the left gear and the right gear are arranged on the fixed shaft and the right impeller shaft respectively through the bearing and the one-way bearing, the fixed shaft is fixed on the driving box body, the right impeller shaft is rotatably erected on the driving box body, and the right impeller shaft is provided with the right impeller at the front end extending out of the driving box body; the driving mechanism of the second water pump is completely the same as the driving mechanism of the first water pump; two right impellers in the two driving mechanisms of the first water pump and the second water pump are respectively arranged in a fluid channel of the first water pump body and a fluid channel of the second water pump body, and the driving directions of two unidirectional bearings in the two driving mechanisms of the first water pump and the second water pump are opposite; the heat absorption copper pipe is fixed on the bottom surface of the metal plate in a serpentine coil pipe mode; the inlet pipe and the outlet pipe of the first water pump are respectively provided with full-width radiating fins, the inlet pipe and the outlet pipe of the second water pump are respectively provided with full-width radiating fins, and the horizontal pipe of the cooling pipeline is provided with half-width radiating fins; the pipe diameter of the cooling pipeline is larger than that of the heat absorption copper pipe, and the cooling pipeline is connected with the heat absorption copper pipe through a pipe orifice joint of the big head and the small head; a plurality of arc strips (16) used for fixing the tail gas pipe of the bus are fixed above the arc grooves through bolts; a reset spring is arranged below the double-sided rack, or the upper end of the double-sided rack is hinged with a bus suspension; the heat absorption copper plate is a plate heat exchanger with a cooling water jacket.
The invention further aims to provide a bus exhaust pipe temperature difference power generation device with higher comprehensive energy utilization rate, which aims to convert heat energy of the bus exhaust pipe into electric energy, and meanwhile, vibration energy in the automobile advancing process is used as cooling liquid circulating power, so that external electric energy is not consumed.
A further object of the invention is achieved by: the cooling water inlet and outlet ends of the heat absorption copper plate with a liquid circulation cavity or the two ends of the cooling water inlet and outlet of the heat absorption copper plate with a liquid circulation cavity are respectively connected with the two ends of a U-shaped cooling pipeline to form a cooling water loop; the heat absorption copper pipe is fixed on the bottom surface of the metal plate; the thermoelectric generation piece is in pressure connection between the metal plate and the bottom plane of the copper arc-shaped groove above the metal plate, or in pressure connection between the heat absorption copper plate and the bottom plane of the copper arc-shaped groove, and the inner curved surface of the arc-shaped groove used for fixing the bus tail gas pipe is identical with the shape of the bus tail gas pipe; a first water pump and a second water pump are respectively arranged on an inlet pipe and an outlet pipe of a cooling pipeline in the cooling water loop; the driving mechanism of the first water pump is as follows: the double-sided rack is arranged below the bus suspension and contacted with the suspension is meshed with the left gear and the right gear respectively, the left gear and the right gear are arranged on the fixed shaft and the right impeller shaft respectively through the bearing and the one-way bearing, the fixed shaft is fixed on the driving box body, the right impeller shaft is rotatably erected on the driving box body, and the right impeller shaft is provided with the right impeller at the front end extending out of the driving box body; the driving mechanism of the second water pump is completely the same as the driving mechanism of the first water pump; two right impellers in the two driving mechanisms of the first water pump and the second water pump are respectively arranged in a fluid channel of the first water pump body and a fluid channel of the second water pump body, and the driving directions of two unidirectional bearings in the two driving mechanisms of the first water pump and the second water pump are opposite; the heat absorption copper pipe is fixed on the bottom surface of the metal plate in a serpentine coil pipe mode; the inlet pipe and the outlet pipe of the first water pump are respectively provided with full-width radiating fins, the inlet pipe and the outlet pipe of the second water pump are respectively provided with full-width radiating fins, and the horizontal pipe of the cooling pipeline is provided with half-width radiating fins; the pipe diameter of the cooling pipeline is larger than that of the heat absorption copper pipe, and the cooling pipeline is connected with the heat absorption copper pipe through a pipe orifice joint of the big head and the small head; a plurality of arc strips (16) used for fixing the tail gas pipe of the bus are fixed above the arc grooves through bolts; a reset spring is arranged below the double-sided rack, or the upper end of the double-sided rack is hinged with a bus suspension; the heat absorption copper plate is a plate heat exchanger with a cooling water jacket.
The temperature difference power generation device of the bus exhaust pipe mainly comprises a vibration driving mechanism, a cooling water circulating mechanism and a temperature difference power generation mechanism, wherein two sides of a double-sided rack arranged at the bottom of a bus suspension are respectively meshed with two gears, a common bearing is arranged between one side gear and a fixed shaft fixedly connected with a driving box body, and a one-way bearing is arranged between the other side gear and an input shaft of a (non-electric) water pump; the inlet and outlet pipe orifices of the two (non-electric) water pumps are connected with a cooling pipeline, the outer wall of the cooling pipeline is provided with full-width radiating fins and half-width radiating fins (the full-width radiating fins can be adopted under the condition of allowable position), and the curved copper pipe is connected with the cooling pipeline through a pipe orifice joint; the hot end copper arc-shaped groove attached to the lower portion of the bus tail gas pipe is connected with the arc-shaped fixing strip through bolts, a thermoelectric generation piece is arranged between the hot end arc-shaped groove and the cold end metal sheet, and the lower end of the cold end metal sheet is attached to the curved copper pipe.
Two ends of the cooling pipeline are respectively provided with a (non-electric) water pump and two full-width radiating fins.
The thermoelectric generation pieces are arrayed in a horizontal plane.
The two unidirectional bearings on the two (non-electric) water pump input shafts are opposite in direction.
The invention realizes unidirectional rotation of the blades in the non-electric water pump (driving the impeller shaft of the water pump to rotate) through the use of the unidirectional bearing, and improves the efficiency of cooling liquid circulation; the double-sided rack arranged at the bottom of the bus suspension and the meshed gear are utilized to convert the energy of the vibration of the bus body, in addition, the condensate is kept at the working temperature at all times due to the installation of the radiating fins, the semicircular structure of the hot end is tightly attached to the exhaust pipe, the heat utilization rate is improved, and the powerful electric energy output of the thermoelectric generation sheet is ensured
The working process and principle of the invention are as follows: the exhaust pipe dissipates a large amount of heat in the running process of the bus, the heat is transferred to the hot end arc-shaped groove, the hot end arc-shaped groove and the cold end metal sheet form a temperature difference, the temperature difference is acted on two ends of the temperature difference generating sheet, the temperature difference generating sheet forms voltage according to the Seebeck principle, current is generated, and the current can be stored after rectification and voltage stabilization for the bus vehicle-mounted equipment.
Vibration driving process:
the axle and the car body of the bus vibrate relatively in the running process, the double-sided rack and the driving box are driven to move relatively, and the rack drives the positioning gear (left gear) and the transmission gear (right gear) meshed with the double-sided rack to rotate. The unidirectional bearing enables the unidirectional bearing to be locked when the transmission gear rotates in a certain direction, and drives the blade shaft of the (non-electric) water pump to rotate; when the transmission gear rotates to the other direction, the unidirectional bearing ball rolls, and the impeller shaft of the water pump does not rotate; thereby realizing the conversion from the bidirectional movement of the moving rack to the unidirectional rotation of the water pump blade.
The cooling circulation process comprises the following steps:
the (non-electric) water pump drives the cooling liquid to circulate in one way in the cooling pipeline and the curved copper pipe. Cooling the cold end metal sheet, so that the temperature difference of the cold end and the hot end of the thermoelectric generation sheet is kept at the optimal condition. At this time, due to the extremely large surface area of the radiating fins and the air flowing in the running process of the vehicle, the cooling liquid circulated and reflowed in the cooling pipeline can be continuously cooled. When the cooling liquid cooled by the cooling pipeline enters the curved copper pipe (namely the heat absorption copper pipe) again, the temperature is lower. Therefore, the cooling liquid continuously and unidirectionally circulates, and the cooling process circulates and reciprocates, so that the two ends of the thermoelectric generation sheet continuously and stably keep a larger temperature difference, and the generated current is continuously and stably generated and has considerable benefits.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention is different from other similar devices in that the invention is arranged at the bottom of the exhaust pipe of the vehicle body, and the heat of the exhaust pipe is directly utilized, which is much higher than the efficiency of utilizing tail gas, is easy to disassemble, has no influence on the normal operation of the vehicle, and has high safety.
2. The cooling system of the invention skillfully utilizes the vibration energy in the running process of the vehicle body to push the water pump to operate so as to realize the circulation of the cooling liquid, and continuously reduces the temperature of the cold end of the thermoelectric generation sheet, thereby maintaining the temperature difference between the cold end and the hot end. The mode can enable the temperature of the cold end to be rapidly reduced, greatly improves the cooling efficiency, ensures that the device can continuously operate and generates electric energy. The device adopts the one-way bearing, and can ensure that the cooling liquid is circulated in one way even though the vibration of the vehicle body is reciprocating, and the whole process does not need energy consumption to realize the cooling of the target.
3. The invention can improve the comfort of the vehicle. Because the cooling liquid is circulated with resistance, the vibration of the vehicle body can be reduced more quickly, and the jolt of the vehicle is reduced, so that the comfort level of passengers is improved greatly.
4. The invention does not need external energy supply, realizes complete green environmental protection and realizes zero pollution.
5. The invention can collect energy continuously for charging electronic equipment such as mobile phones and the like, and solves the embarrassing situation of insufficient power of the electronic equipment for traveling.
6. The thermoelectric generation device can convert heat energy emitted by the exhaust pipe into electric energy, charge electric equipment in the bus, and improve the utilization efficiency of energy.
The device effectively solves the problem that the temperature difference power generation cold end is cooled to maintain the temperature difference for power generation by the circulation of the vibration driving cooling liquid of the bus, and has the characteristics of simple structure, low cost, safe and reliable use, high power generation efficiency, energy conservation, small volume, no environmental pollution, universal application to all motor vehicles and the like.
Drawings
Fig. 1 is a perspective view of the overall structure of the present invention.
Fig. 2 is a structural view of a first water pump driving mechanism according to the present invention.
Fig. 3 is a perspective view of fig. 1 with a drive box removed from view in another viewing direction.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description.
Fig. 1 shows a bus exhaust pipe temperature difference power generation device, wherein the two ends of a cooling water inlet and outlet of a heat absorption copper pipe 12 or a cooling water inlet and outlet of a heat absorption copper plate with a liquid circulation cavity are respectively connected with the two ends of a U-shaped cooling pipeline 10 to form a cooling water loop; the heat absorbing copper pipe 12 is fixed on the bottom surface of the metal plate 13; the thermoelectric generation piece 14 is pressed between the metal plate 13 and the bottom plane of the copper arc-shaped groove 15 above the metal plate 13, or the thermoelectric generation piece 14 is pressed between the heat absorption copper plate and the bottom plane of the copper arc-shaped groove 15, and the inner curved surface of the arc-shaped groove 15 used for fixing the bus tail gas pipe is identical with the shape of the bus tail gas pipe; a first water pump 18 and a second water pump 17 are respectively arranged on an inlet pipe and an outlet pipe of the cooling pipeline 10 in the cooling water loop; the driving mechanism of the first water pump is as follows: the double-sided rack 1 which is arranged below the bus suspension and is contacted with the suspension is respectively meshed with the left gear 3a and the right gear 3, the left gear 3a and the right gear 3a are respectively arranged on the fixed shaft 6 and the right impeller shaft 7 (namely, the fixed shaft is arranged on the bearing inner ring and the fixed gear is arranged on the bearing outer ring) through the bearing 5 and the one-way bearing 4, the fixed shaft 6 is fixed on the driving box body 2, the right impeller shaft 7 is rotatably erected on the driving box body 2, and the right impeller is arranged on the front end of the right impeller shaft 7 extending out of the driving box body 2; the driving mechanism of the second water pump is completely the same as the driving mechanism of the first water pump; the two right impellers of the two driving mechanisms of the first water pump and the second water pump are respectively arranged in the fluid channel of the first water pump 18 body and the fluid channel of the second water pump body, and the driving directions of the two unidirectional bearings 4 of the two driving mechanisms of the first water pump and the second water pump are opposite (see fig. 2). The heat absorption copper plate is a plate heat exchanger with a cooling water jacket, and the heat exchange area is larger. The U-shaped cooling pipeline 10 consists of inlet and outlet pipes (parallel to each other) on two sides and a horizontal pipe vertically connected with the inlet and outlet pipes. The heat absorbing steel pipe 12 is fixed to the bottom surface of the metal plate 13 in the form of a serpentine coil (fig. 3). The inlet and outlet pipes of the first water pump 18 are provided with full-width radiating fins, the inlet and outlet pipes of the second water pump 17 are provided with full-width radiating fins 8, and the horizontal pipe of the cooling water pipe 10 is provided with half-width radiating fins 9. The pipe diameter of the cooling water pipe 10 is larger than that of the heat absorbing copper pipe 12, and the cooling water pipe 10 is connected with the heat absorbing copper pipe 12 through a pipe orifice joint 11 with a large end and a small end. A plurality of arc strips 16 used for fixing the tail gas pipe of the bus are also fixed above the arc grooves 15 through bolts. A reset spring is arranged below the double-sided rack 1, or the upper end of the double-sided rack 1 is hinged with a bus suspension.
The bus exhaust pipe temperature difference power generation device comprises a vibrating water pump driving mechanism, a cooling water circulating mechanism and a temperature difference power generation mechanism, wherein two sides of a double-sided rack 1 arranged at the bottom of a bus suspension are respectively meshed with 2 gears, a (common) bearing 5 is arranged between a left gear 3a and a fixed shaft 6 (fixedly connected with a driving box body 2), and a one-way bearing 4 is arranged between a right gear 3 and an input shaft of a (non-electric) water pump 7; the inlet and outlet pipe orifices of the two (non-electric) water pumps 18 and 17 are connected with the cooling pipeline 10, the outer wall of the cooling pipeline 10 is provided with a full-width radiating fin 8 and a half-width radiating fin 9 (the full-width radiating fin can be used if the position is permitted), and the (curved) heat absorption copper pipe 12 is connected with the cooling pipeline 10 through a pipe orifice joint 11; the hot-end copper arc-shaped groove 15 attached to the lower portion of the bus tail gas pipe is connected with the arc-shaped strip 16 through bolts, the thermoelectric generation piece 14 is arranged between the hot-end arc-shaped groove 15 and the cold-end metal plate 13, and the lower end of the cold-end metal plate 13 is attached to the curved heat absorption copper pipe 12.
The two ends of the cooling pipeline 10 are respectively provided with a non-electric water pump and two full-width heat dissipation fins 8.
The thermoelectric generation sheets 14 are arranged in a horizontal plane array.
The two unidirectional bearings 4 on the two non-electric water pump input shafts (i.e., impeller shafts) are in opposite directions.
Vibration driving process:
in the running process of the bus, the axle and the bus body vibrate relatively to drive the double-sided rack 1 and the driving box body 2 to move relatively, and the rack 1 drives the positioning gear meshed with the double-sided rack 1, namely the left gear 3a and the transmission gear, namely the right gear 3 to rotate. The unidirectional bearing 4 enables the unidirectional bearing 4 to be locked when the transmission gear rotates in a certain direction, and drives the impeller shaft of the (non-electric) water pump 7 to rotate; when the transmission gear rotates to the other direction, the unidirectional bearing 4 rolls with the balls, and the blade shaft does not rotate; thereby realizing the conversion from the bidirectional movement of the rack to the unidirectional rotation of the impeller shaft of the water pump.
The cooling circulation process comprises the following steps:
the first and second water pumps 18, 17 alternately drive the cooling liquid to circulate in one way in the cooling pipe 10 and the curved heat absorbing copper pipe 12. The temperature of the cold end metal plate 13 is reduced, so that the temperature difference of the cold end and the hot end of the thermoelectric generation piece 14 is kept at the optimal condition. At this time, the cooling liquid circulated in the cooling pipe 10 can be continuously cooled down due to the extremely large surface area of the radiator fins 8 and the air flowing during the running of the vehicle. The cooling liquid cooled by the cooling pipe 10 has a lower temperature when it enters the curved heat absorbing copper pipe 12 again. In this way, the cooling liquid continuously and unidirectionally circulates, and the cooling process circulates and reciprocates, so that the two ends of the thermoelectric generation sheet 14 continuously and stably maintain a larger temperature difference, and the generated current is continuously and stably generated with considerable benefit
Referring to fig. 1, two ends of a cooling water inlet and outlet of a heat absorption copper pipe 12 or two ends of a cooling water inlet and outlet of a heat absorption copper plate with a liquid circulation cavity are respectively connected with two ends of a U-shaped cooling pipeline 10 to form a cooling water loop; the heat absorbing copper pipe 12 is fixed on the bottom surface of the metal plate 13; the thermoelectric generation piece 14 is pressed between the metal plate 13 and the bottom plane of the copper arc-shaped groove 15 above the metal plate 13, or the thermoelectric generation piece 14 is pressed between the heat absorption copper plate and the bottom plane of the copper arc-shaped groove 15, and the inner curved surface of the arc-shaped groove 15 used for fixing the bus tail gas pipe is identical with the shape of the bus tail gas pipe; a first water pump 18 and a second water pump 17 are respectively arranged on an inlet pipe and an outlet pipe of the cooling pipeline 10 in the cooling water loop; the other driving mechanism of the first water pump is as follows: the double-sided rack 1 which is arranged below the bus suspension and is contacted with the suspension is respectively meshed with the left gear 3a and the right gear 3, the left gear and the right gear are respectively arranged on two impeller shafts through two unidirectional bearings with the same driving direction, the two impeller shafts are respectively rotatably erected on the driving box body 2, and the front ends of the two impeller shafts extending out of the driving box body 2 are respectively provided with an impeller; the driving mechanism of the second water pump is completely the same as the driving mechanism of the first water pump; the two impellers in the drive mechanism of the first water pump are arranged in tandem (in the water flow direction) in the pump body of the first water pump 18, and the two impellers in the drive mechanism of the second water pump are arranged in tandem in the pump body of the second water pump 17. Referring to fig. 2, that is, the left and right gears in fig. 2 are all installed on two parallel impeller shafts through unidirectional bearings (the driving directions are the same), the front parts of the two impeller shafts respectively extend into the pump body of the first water pump 18, and the front parts of the two impeller shafts are all provided with blades, that is, a first water pump driven by the vibration force of the automobile is formed, when the vibration force of the automobile drives the double-sided rack to move downwards (see fig. 2), the left gear rotates clockwise, and the right gear rotates anticlockwise, because the two impeller shafts are installed on the two impeller shafts through unidirectional bearings with the same driving directions respectively, only one impeller shaft is driven to rotate to serve as the water pump to circulate cooling water, and the other impeller shaft only idles; the structure of the second water pump is identical to that of the first water pump. In this scheme, when the double-sided rack is down, one impeller in the first water pump and the second water pump respectively rotates in the same direction (e.g., clockwise), and when the double-sided rack is up, one impeller in the first water pump and the second water pump respectively rotates in the same direction (e.g., clockwise). Thus, two water pumps in the whole cooling liquid circulation loop work simultaneously (rotate in the same direction), and the energy utilization rate is higher. The heat absorption copper pipe 12 is fixed on the bottom surface of the metal plate 13 in a serpentine coil form; the inlet pipe and the outlet pipe of the first water pump 18 are respectively provided with full-width radiating fins, the inlet pipe and the outlet pipe of the second water pump 17 are respectively provided with full-width radiating fins 8, and the horizontal pipe of the cooling water pipe 10 is provided with half-width radiating fins 9. The pipe diameter of the cooling water pipe 10 is larger than that of the heat absorption copper pipe 12, and the cooling water pipe 10 is connected with the heat absorption copper pipe 12 through a pipe orifice joint 11 with a large end and a small end; a plurality of arc strips 16 used for fixing the tail gas pipe of the bus are fixed above the arc grooves 15 through bolts. A reset spring is arranged below the double-sided rack 1, or the upper end of the double-sided rack 1 is hinged with a bus suspension.
Claims (2)
1. The temperature difference power generation device of the bus exhaust pipe is characterized in that the two ends of a cooling water inlet and outlet of a heat absorption copper pipe (12) or a cooling water inlet and outlet of a heat absorption copper plate with a liquid circulation cavity are respectively connected with the two ends of a U-shaped cooling pipeline (10) to form a cooling water loop; the heat absorption copper pipe (12) is fixed on the bottom surface of the metal plate (13); the thermoelectric generation piece (14) is pressed between the metal plate (13) and the bottom plane of the copper arc-shaped groove (15) above the metal plate (13), or the thermoelectric generation piece (14) is pressed between the heat absorption copper plate and the bottom plane of the copper arc-shaped groove (15), and the inner curved surface of the arc-shaped groove (15) used for fixing the bus tail gas pipe is identical with the shape of the bus tail gas pipe; a first water pump (18) and a second water pump (17) are respectively arranged on an inlet pipe and an outlet pipe of a cooling pipeline (10) in the cooling water loop; the driving mechanism of the first water pump is as follows: the double-sided rack (1) which is arranged below the bus suspension and is in contact with the suspension is meshed with the left gear (3 a) and the right gear (3) respectively, the left gear (3 a) and the right gear (3) are arranged on the fixed shaft (6) and the right impeller shaft (7) respectively through the bearing (5) and the one-way bearing (4), the fixed shaft (6) is fixed on the driving box body (2), the right impeller shaft (7) is rotatably erected on the driving box body (2), and the right impeller is arranged at the front end of the right impeller shaft (7) extending out of the driving box body (2); the driving mechanism of the second water pump is completely the same as the driving mechanism of the first water pump; two right impellers in the two driving mechanisms of the first water pump and the second water pump are respectively arranged in a fluid channel of the first water pump (18) body and a fluid channel of the second water pump body, and the driving directions of two unidirectional bearings (4) in the two driving mechanisms of the first water pump and the second water pump are opposite; the heat absorption copper pipe (12) is fixed on the bottom surface of the metal plate (13) in a serpentine coil pipe mode; full-width radiating fins are arranged on the inlet pipe and the outlet pipe of the first water pump (18), full-width radiating fins (8) are arranged on the inlet pipe and the outlet pipe of the second water pump (17), and half-width radiating fins (9) are arranged on the horizontal pipe of the cooling pipeline (10); the pipe diameter of the cooling pipeline (10) is larger than that of the heat absorption copper pipe (12), and the cooling pipeline (10) is connected with the heat absorption copper pipe (12) through a pipe orifice joint (11) with a big end and a small end; a plurality of arc strips (16) used for fixing the tail gas pipe of the bus are fixed above the arc grooves (15) through bolts; a reset spring is arranged below the double-sided rack (1), or the upper end of the double-sided rack (1) is hinged with a bus suspension; the heat absorption copper plate is a plate heat exchanger with a cooling water jacket.
2. The temperature difference power generation device of the bus exhaust pipe is characterized in that the two ends of a cooling water inlet and outlet of a heat absorption copper pipe (12) or a cooling water inlet and outlet of a heat absorption copper plate with a liquid circulation cavity are respectively connected with the two ends of a U-shaped cooling pipeline (10) to form a cooling water loop; the heat absorption copper pipe (12) is fixed on the bottom surface of the metal plate (13); the thermoelectric generation piece (14) is pressed between the metal plate (13) and the bottom plane of the copper arc-shaped groove (15) above the metal plate (13), or the thermoelectric generation piece (14) is pressed between the heat absorption copper plate and the bottom plane of the copper arc-shaped groove (15), and the inner curved surface of the arc-shaped groove (15) used for fixing the bus tail gas pipe is identical with the shape of the bus tail gas pipe; a first water pump (18) and a second water pump (17) are respectively arranged on an inlet pipe and an outlet pipe of a cooling pipeline (10) in the cooling water loop; the driving mechanism of the first water pump is as follows: the double-sided rack (1) is arranged below the bus suspension and contacted with the suspension is respectively meshed with the left gear (3 a) and the right gear (3), the left gear and the right gear are respectively arranged on two impeller shafts through two unidirectional bearings with the same driving direction, the two impeller shafts are respectively rotatably arranged on the driving box body (2), and the front ends of the two impeller shafts extending out of the driving box body (2) are respectively provided with an impeller; the driving mechanism of the second water pump is completely the same as the driving mechanism of the first water pump; two impellers in the driving mechanism of the first water pump are arranged in the pump body of the first water pump (18) in tandem, and two impellers in the driving mechanism of the second water pump are arranged in the pump body of the second water pump (17) in tandem; the heat absorption copper pipe (12) is fixed on the bottom surface of the metal plate (13) in a serpentine coil pipe mode; full-width radiating fins are arranged on the inlet pipe and the outlet pipe of the first water pump (18), full-width radiating fins (8) are arranged on the inlet pipe and the outlet pipe of the second water pump (17), and half-width radiating fins (9) are arranged on the horizontal pipe of the cooling pipeline (10); the pipe diameter of the cooling pipeline (10) is larger than that of the heat absorption copper pipe (12), and the cooling pipeline (10) is connected with the heat absorption copper pipe (12) through a pipe orifice joint (11) with a big end and a small end; a plurality of arc strips (16) used for fixing the tail gas pipe of the bus are fixed above the arc grooves (15) through bolts; a reset spring is arranged below the double-sided rack (1), or the upper end of the double-sided rack (1) is hinged with a bus suspension; the heat absorption copper plate is a plate heat exchanger with a cooling water jacket.
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| CN201710358844.7A CN107086817B (en) | 2017-05-19 | 2017-05-19 | Bus exhaust pipe temperature difference power generation device |
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| CN201710358844.7A CN107086817B (en) | 2017-05-19 | 2017-05-19 | Bus exhaust pipe temperature difference power generation device |
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| CN107086817B true CN107086817B (en) | 2023-05-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108592653B (en) * | 2018-04-03 | 2024-02-02 | 常州机电职业技术学院 | Vibration damping and heat transfer enhancing device for automobile radiator |
| CN110680208A (en) * | 2019-10-15 | 2020-01-14 | 天津大学 | Thermos bottle plug and thermos bottle with thermoelectric power generation function |
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