CN110645158B - Solid phase heat energy power generation device based on shape memory alloy - Google Patents
Solid phase heat energy power generation device based on shape memory alloy Download PDFInfo
- Publication number
- CN110645158B CN110645158B CN201910926960.3A CN201910926960A CN110645158B CN 110645158 B CN110645158 B CN 110645158B CN 201910926960 A CN201910926960 A CN 201910926960A CN 110645158 B CN110645158 B CN 110645158B
- Authority
- CN
- China
- Prior art keywords
- piston
- hot water
- cold water
- inner core
- water inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
- F03G7/065—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like using a shape memory element
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Reciprocating Pumps (AREA)
Abstract
A solid phase heat energy power generation device based on shape memory alloy belongs to the field of power generation devices. Comprises an energy conversion device, an energy transmission device and a generator; the energy conversion device comprises piston type solid heat energy conversion devices, a lever, a hot water tank and a cold water tank which are arranged in pairs; the energy transmission device comprises a hydraulic cylinder A and a hydraulic cylinder B which are connected through a pipeline, and the hydraulic cylinder B is connected with the generator. The mechanical structure is simple, the output displacement is large, the kinetic energy is generated by alternately introducing cold water and hot water into the piston type solid-state heat energy conversion devices which are arranged in pairs, the kinetic energy passes through the energy transmission device to generate electric energy, the hydraulic cylinder A and the hydraulic cylinder B in the energy transmission device can amplify the output displacement of the SMA spring by nearly two times, and the driving performance and the power generation performance are improved.
Description
Technical Field
The invention relates to the field of power generation devices, in particular to a solid-phase heat power generation device based on shape memory alloy.
Background
Conventional energy converters such as steam turbines and gas turbines mainly use changes in the state of matter of gas to perform energy conversion, and thus the thermal efficiency in low-temperature regions is low, and particularly, heat generated by power plants and waste incinerators is greatly lost by transferring heat energy over long distances, and thus such heat energy is limited to use in adjacent regions, but if working substances of heat engines are changed to solids, chemical energy converters implemented by using changes in the atomic bonding energy of solid substances have considerably high thermal efficiency even in low-temperature regions, and thus it is necessary to develop power generation techniques using energy that cannot be used in low-temperature regions.
Disclosure of Invention
The invention provides a solid-phase heat power generation device based on shape memory alloy, aiming at solving the problem that the environment is greatly damaged by the power provided by the existing energy.
In order to achieve the purpose, the invention adopts the technical scheme that: a solid phase heat energy power generation device based on shape memory alloy comprises an energy conversion device, an energy transmission device and a generator; the energy conversion device comprises piston type solid-state heat energy conversion devices, a lever, a hot water tank and a cold water tank which are arranged in pairs, the piston type solid-state heat energy conversion devices arranged in pairs are respectively communicated with the hot water tank and the cold water tank through pipelines, a connecting shaft of the piston type solid-state heat energy conversion device is connected with the lever, and the lever is connected with the hydraulic cylinder A; the energy transmission device comprises a hydraulic cylinder A and a hydraulic cylinder B which are connected through a pipeline, and the hydraulic cylinder B is connected with the generator.
Further, the piston type solid-state thermal energy conversion device comprises a shell, an upper piston, a lower piston and an SMA spring; the bottom of the shell is closed, the top of the shell is open, and the side wall of the shell is provided with a hot water inlet, a cold water inlet, a hot water outlet and a cold water outlet; the upper piston and the lower piston are both positioned in the shell, the SMA spring is positioned between the upper piston and the lower piston, and the top of the upper piston is provided with a connecting shaft.
Further, the middle part of the SMA spring is fixed with the shell through a fixing frame, the side walls of the upper piston and the lower piston are attached to the shell, a passage is formed in the inner parts of the upper piston and the lower piston, an upper baffle is arranged above the upper piston, the side wall of the upper baffle is attached to the shell, and the upper piston and the lower piston slide between the stretching position and the contracting position in the shell.
Further, when the upper piston and the lower piston are located at the contraction positions, the SMA spring is in a contraction state, the upper piston seals the hot water inlet, the hot water outlet is located above the upper piston, the upper baffle is located above the hot water outlet, the lower piston seals the cold water outlet, and the cold water inlet is located below the lower piston; when the upper piston and the lower piston are located at the stretching positions, the SMA spring is in a stretching state, the upper piston seals the hot water outlet, the hot water inlet is located below the upper piston, the lower piston seals the cold water inlet, and the cold water outlet is located above the lower piston; the bottom of the lower piston extends out of the fixed shaft, the bottom of the fixed shaft is provided with a lower baffle, the side wall of the lower baffle is attached to the shell, when the lower piston is located at the contraction position, the cold water inlet is located above the lower baffle, and when the lower piston is located at the extension position, the lower baffle is attached to the bottom of the shell.
Further, the piston type solid-state thermal energy conversion device comprises an outer shell, an inner core and an SMA spring; the bottom of the shell is closed, the top of the shell is open, and the side wall of the shell is provided with a hot water inlet, a cold water inlet, a hot water outlet and a cold water outlet; the inner core is positioned in the shell, the top of the inner core is provided with an upper piston, the bottom of the inner core is provided with an opening, and the side wall of the inner core is provided with openings corresponding to the hot water inlet, the cold water inlet, the hot water outlet and the cold water outlet respectively; the top of the upper piston is provided with a connecting shaft, and the SMA spring is positioned in the inner core.
Furthermore, the bottom of the shell is sealed through a rear cover, a bulge used for fixing the SMA spring is arranged on the rear cover, the side wall of the inner core is attached to the side wall of the shell, a passage is arranged inside the upper piston, an upper baffle is further arranged at the top of the inner core and located above the piston, and the inner core slides between an extending position and a contracting position in the shell.
Further, when the inner core is located at the contraction position, the SMA spring is in a contraction state, the side wall of the inner core closes the hot water inlet and the cold water outlet, the hot water outlet and the cold water inlet are respectively communicated with corresponding openings on the side wall of the inner core, the hot water outlet is located above the upper piston, the upper baffle is located above the hot water outlet, and the bottom of the inner core is in contact with the rear cover; when the inner core is positioned at the stretching position, the SMA spring is in a stretching state, the side wall of the inner core seals the hot water outlet and the cold water inlet, the hot water inlet and the cold water outlet are respectively communicated with corresponding openings on the side wall of the inner core, the hot water inlet is positioned below the upper piston, and a gap is formed between the bottom of the inner core and the rear cover; the SMA spring is positioned in the groove-shaped chamber of the inner core, one end of the SMA spring is in contact with the bottom of the piston, the other end of the SMA spring is in contact with the rear cover, and the protrusion for fixing the SMA spring extends into the SMA spring.
Furthermore, the hot water inlet and the hot water outlet are respectively connected with the hot water tank through pipelines, a micro pump is arranged between the hot water tank and the hot water inlet, the cold water inlet and the cold water outlet are respectively connected with the cold water tank through pipelines, and a micro pump is arranged between the cold water inlet and the cold water tank.
Furthermore, a piston rod of the hydraulic cylinder A is rotationally connected with the lever, a cylinder body of the hydraulic cylinder A is provided with a pipeline communicated with a cylinder body of the hydraulic cylinder B, the piston rod of the hydraulic cylinder B is connected with a gear mechanism, and the gear mechanism is connected with the generator through a speed regulating wheel.
Furthermore, the gear mechanism comprises three gears, a piston rod of the hydraulic cylinder B is arranged to be a rack and meshed with a first gear, the first gear is coaxial with a second gear, the second gear is provided with a one-way ball bearing, the second gear is meshed with a third gear, the third gear is coaxial with a first belt pulley in the speed regulating wheel, and a second belt pulley in the speed regulating wheel is connected with the generator.
The invention has the beneficial effects that: mechanical structure is simple, output displacement is big, and through letting in cold water and hot water in turn to the piston solid-state heat energy conversion device who sets up in pairs and produce kinetic energy, and then produce the electric energy through energy transmission device, pneumatic cylinder A and pneumatic cylinder B among the energy transmission device can enlarge nearly twice with the output displacement of SMA spring, have promoted drive performance and generating performance.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of an energy conversion device according to the present invention;
FIG. 3 is a schematic structural diagram of an energy conversion device according to the present invention;
FIG. 4 is a schematic structural diagram A of a piston-type solid state thermal energy conversion device according to the present invention;
FIG. 5 is a schematic structural diagram B of a piston-type solid state thermal energy conversion device according to the present invention;
FIG. 6 is a right side view of the energy conversion device of the present invention;
FIG. 7 is a front view of the energy conversion device of the present invention;
FIG. 8 is a left side view of the energy conversion device of the present invention;
FIG. 9 is a top view of the energy conversion device of the present invention;
fig. 10 is a schematic structural diagram of an energy transmission device of the present invention.
In the figure, 1, an energy conversion device, 2, an energy transmission device, 3, a hot water tank, 4, a cold water tank, 5, a piston type solid-state heat energy conversion device, 6, an upper piston, 7, an SMA spring, 8, a hot water outlet, 9, a cold water outlet, 10, a hot water inlet, 11, a cold water inlet, 12, a connecting shaft, 13, a fixed frame, 14, a shell, 15, a lower piston, 16, a rear cover, 17, an inner core, 18, a groove-shaped chamber, 19, a strain gauge, 20, a lever, 21, a micro pump, 22, a hydraulic cylinder B, 23, a generator, 24, a gear mechanism and 25 are arranged on a speed regulating wheel.
Detailed Description
Example 1
A solid phase thermal energy generating set based on shape memory alloy comprises an energy conversion device 1, an energy transmission device 2 and a generator 23; the energy conversion device 1 comprises piston type solid-state heat energy conversion devices 5, a lever 20, a hot water tank 3 and a cold water tank 4 which are arranged in pairs, the piston type solid-state heat energy conversion devices 5 which are arranged in pairs are respectively communicated with the hot water tank 3 and the cold water tank 4 through pipelines, a connecting shaft 12 of each piston type solid-state heat energy conversion device 5 is connected with the lever 20, and a connecting point and a fulcrum of the connecting shaft 12 of one piston type solid-state heat energy conversion device 5, a connecting point of the connecting shaft 12 of the other piston type solid-state heat energy conversion device 5 and a connecting point of a hydraulic cylinder A18 are sequentially arranged on the lever 20; the energy transmission device 2 comprises a hydraulic cylinder A18 and a hydraulic cylinder B22 which are connected through a pipeline, and the hydraulic cylinder B22 is connected with the generator 23.
The piston type solid-state heat energy conversion device 5 is characterized in that a hot water inlet 10 and a hot water outlet 8 are respectively connected with a hot water tank 3 through pipelines, a micro pump 21 is arranged between the hot water tank 3 and the hot water inlet 10, a cold water inlet 11 and a cold water outlet 9 are respectively connected with a cold water tank 4 through pipelines, and the micro pump 21 is arranged between the cold water inlet 11 and the cold water tank 4; the hot water tank 3 can also be connected to a thermal energy collecting device consisting of a thermally insulated rigid container.
The piston rod of the hydraulic cylinder A18 is rotationally connected with the lever 20, the cylinder body of the hydraulic cylinder A18 is provided with a pipeline communicated with the cylinder body of the hydraulic cylinder B22, the piston rod of the hydraulic cylinder B22 is connected with the gear mechanism 24, and the gear mechanism 24 is connected with the generator 23 through the speed regulating wheel 25.
The gear mechanism 24 comprises three gears, a piston rod of the hydraulic cylinder B22 is arranged as a rack and meshed with a first gear, the first gear is coaxial with a second gear, the second gear is provided with a one-way ball bearing, the second gear is meshed with a third gear, the third gear is coaxial with a first belt pulley in the speed regulating wheel 25, and a second belt pulley in the speed regulating wheel 25 is connected with the generator 23.
The piston type solid-state thermal energy conversion devices 5 are arranged in pairs, a connecting shaft 12 of one piston type solid-state thermal energy conversion device 5 is rotatably connected with the middle of a lever 20, a connecting shaft 12 of the other piston type solid-state thermal energy conversion device 5 is rotatably connected with one end of the lever 20, the other end of the lever 20 is rotatably connected with a piston rod of a hydraulic cylinder A18, a strain gauge 2 is arranged on a piston rod of the hydraulic cylinder A18, the strain gauge 2 is preferably a Nippon Korea (Kyowa) strain gauge purchased from Jiangsu Jingminghai instruments and devices, and the type is as follows: KH high temperature welding foil gage (kHCR/KHCX), operating temperature: -50-350 ℃, resistance: 350 ohms; grid length: 5mm, self-compensating expansion coefficient: 11. 16 × microstrain/° c; the strain sensor is very suitable for long-term strain monitoring and severe-condition high-temperature strain measurement; a fulcrum is arranged between connecting points of the lever 20 and the two piston type solid-state thermal energy conversion devices 5, the distances between the connecting point of the two piston type solid-state thermal energy conversion devices 5 and the fulcrum are both L1, the distance between the connecting point 12 of one piston type solid-state thermal energy conversion device 5 and the middle part of the lever 20, the connecting point between the connecting point of the other end of the lever 3 and the connecting point of the piston rod of the hydraulic cylinder A18 in a rotating mode is L2, and the distance between the L2 and the connecting point of the piston rod of the hydraulic cylinder A18 is twice L1.
Example 2
The present embodiment provides a piston-type solid state thermal energy conversion device 5, as shown in fig. 4:
the piston type solid-state thermal energy conversion device 5 comprises a shell 14, an upper piston 6, a lower piston 15 and an SMA spring 7; the bottom of the shell 14 is closed, the top is open, and the side wall is provided with a hot water inlet 10, a cold water inlet 11, a hot water outlet 8 and a cold water outlet 9; the upper piston 6 and the lower piston 15 are both positioned in the shell 14, the SMA spring 7 is positioned between the upper piston 6 and the lower piston 15, and the top of the upper piston 6 is provided with a connecting shaft 12.
The middle part of the SMA spring 7 is fixed with a shell 14 through a fixing frame 13, the side walls of the upper piston 6 and the lower piston 15 are attached to the shell 14, passages are arranged inside the upper piston 6 and the lower piston 15, an upper baffle plate is arranged above the upper piston 6, the side wall of the upper baffle plate is attached to the shell 14, and the upper piston 6 and the lower piston 15 slide between an extending position and a retracting position in the shell 14.
When the upper piston 6 and the lower piston 15 are located at the contraction positions, the SMA spring 7 is in a contraction state, the upper piston 6 seals the hot water inlet 10, the hot water outlet 8 is located above the upper piston 6, the upper baffle is located above the hot water outlet 8, the lower piston 15 seals the cold water outlet 9, and the cold water inlet 11 is located below the lower piston 15; when the upper piston 6 and the lower piston 15 are located at the extension positions, the SMA spring 7 is in an extension state, the upper piston 6 seals the hot water outlet 8, the hot water inlet 10 is located below the upper piston 6, the lower piston 15 seals the cold water inlet 11, and the cold water outlet 9 is located above the lower piston 15; the fixed shaft is stretched out to lower piston 15 bottom, and the fixed shaft bottom is equipped with down the baffle, and lower baffle lateral wall and shell 14 laminating, when lower piston 15 was located the contraction position, cold water inlet 11 was located baffle top down, and when lower piston 15 was located the extended position, lower baffle and the laminating of shell 14 bottom formed sealed cabin between overhead gage and the lower baffle, overhead gage and lower baffle were equipped with sealed the pad.
After the upper piston 6 and the lower piston 15 reach the contraction position, the hot water inside is led out from the hot water outlet 8 through the upper piston 6, the cold water is led in from the cold water inlet 11 through the lower piston 15, the SMA spring 7 is cooled and starts to expand until the upper piston 6 and the lower piston 15 reach the expansion position.
After the upper piston 6 and the lower piston 15 reach the extension position, the cold water inside is led out from the cold water outlet 9, the hot water is led in from the hot water inlet 10, the SMA spring 7 starts to contract after being heated until the upper piston 6 and the lower piston 15 reach the contraction position; and the operation is repeated in sequence.
The preferred hot water inlet 10 and cold water inlet 11 are located on one side of the piston solid state thermal energy conversion device 5, and the hot water outlet 8 and cold water outlet 9 are located on the other side; the preferred hot water temperature is 50-100 degrees and the cold water temperature is 20-30 degrees.
Example 3
The present embodiment provides a piston-type solid state thermal energy conversion device 5, as shown in fig. 5:
the piston type solid-state thermal energy conversion device 5 comprises an outer shell 14, an inner core 17 and an SMA spring 7; the bottom of the shell 14 is closed, the top is open, and the side wall is provided with a hot water inlet 10, a cold water inlet 11, a hot water outlet 8 and a cold water outlet 9; the inner core 17 is positioned in the shell 14, the top of the inner core is provided with an upper piston 6, the bottom of the inner core is provided with an opening, and the side wall of the inner core is provided with openings corresponding to the hot water inlet 10, the cold water inlet 11, the hot water outlet 8 and the cold water outlet 9 respectively; the top of the upper piston 6 is provided with a connecting shaft 12, and the SMA spring 7 is positioned in an inner core 17.
The bottom of shell 14 is sealed through back lid 16, is equipped with the arch that is used for fixed SMA spring 7 on the back lid 16, and the laminating of inner core 17 lateral wall and shell 14 lateral wall goes up the inside passageway that is equipped with of piston 6, and the inner core 17 top still is equipped with the overhead gage, and the overhead gage is located piston 6 top, and inner core 17 slides between the extension position and the contraction position in shell 14.
When the inner core 17 is located at the contraction position, the SMA spring 7 is in a contraction state, the side wall of the inner core 17 seals the hot water inlet 10 and the cold water outlet 9, the hot water outlet 8 and the cold water inlet 11 are respectively communicated with corresponding openings on the side wall of the inner core 17, the hot water outlet 8 is located above the upper piston 6, the upper baffle is located above the hot water outlet 8, and the bottom of the inner core 17 is in contact with the rear cover 16; when the inner core 17 is located at the stretching position, the SMA spring 7 is in a stretching state, the side wall of the inner core 17 seals the hot water outlet 8 and the cold water inlet 11, the hot water inlet 10 and the cold water outlet 9 are respectively communicated with corresponding openings on the side wall of the inner core 17, the hot water inlet 10 is located below the upper piston 6, and a gap is formed between the bottom of the inner core 17 and the rear cover 16; the SMA spring 7 is positioned in a groove-shaped chamber 18 of an inner core 17, one end of the SMA spring 7 is in contact with the bottom of the piston 6, the other end of the SMA spring 7 is in contact with a rear cover 16, and a bulge for fixing the SMA spring 7 extends into the SMA spring 7.
After the inner core 17 reaches the contraction position, hot water in the inner core 17 passes through the upper piston 6 and is led out from the hot water outlet 8, cold water is introduced into the inner core 17 from the cold water inlet 11, and the SMA spring 7 is cooled and begins to expand until the upper piston 6 drives the inner core 17 to the expansion position.
After the inner core 17 reaches the stretching position, cold water in the inner core 17 is led out from the cold water outlet 9, hot water is led in from the hot water inlet 10, the SMA spring 7 is heated and starts to contract until the inner core 17 reaches the contraction position; and the operation is repeated in sequence.
The preferred hot water inlet 10 and cold water inlet 11 are located on one side of the piston solid state thermal energy conversion device 5, and the hot water outlet 8 and cold water outlet 9 are located on the other side; the preferred hot water temperature is 50-100 degrees and the cold water temperature is 20-30 degrees.
The SMA spring 7 of the present invention is compressed above its reverse phase transition point, and produces a strong contraction at high temperatures, and a weak resistance to expansion below the phase transition point, so that this difference can be exploited as the power of the upper piston 6. Hot water is introduced into one piston type solid-state thermal energy conversion device 5 to a temperature higher than the transformation point of the inverse martensite, cold water is introduced into the other piston type solid-state thermal energy conversion device 5 to be cooled to a temperature lower than the transformation point, so that the connecting shaft 12 of the one piston type solid-state thermal energy conversion device 5 retracts, the connecting shaft 12 of the other piston type solid-state thermal energy conversion device 5 extends, the lever 20 drives the piston rod of the hydraulic cylinder A18 to extend (as shown in figure 3), then cold water is introduced into the one piston type solid-state thermal energy conversion device 5 to be cooled to a temperature lower than the transformation point, hot water is introduced into the other piston type solid-state thermal energy conversion device 5 to a temperature higher than the transformation point of the inverse martensite, the lever 20 drives the piston rod of the hydraulic cylinder A18 to retract, the piston rod makes linear reciprocating motion, so that the hydraulic cylinder A18 generates kinetic energy, and the hydraulic cylinder A18 is communicated with the hydraulic cylinder B22, therefore, the hydraulic cylinder A18 drives the hydraulic cylinder B22 to generate kinetic energy, a piston rod of the hydraulic cylinder B22 drives the gear mechanism 24 to rotate, and the speed is regulated by the speed regulating wheel 25 to drive the generator 23 to generate electricity.
The key of whether the piston type solid-state heat energy conversion device 5 can finish the driving work with high efficiency is the sensitivity of introducing hot water and cold water into the SMA spring 7, the introduced hot water and the introduced cold water are mutually independent and are respectively introduced in sequence under the driving of two micro pumps 21, the micro pumps 21 can be controlled by an AT89C52 single chip microcomputer, for the purpose of more efficient work, a temperature sensor is arranged in the piston type solid-state heat energy conversion device 5 to monitor the real-time temperature in the piston type solid-state heat energy conversion device 5 and transmit information to a main control board, so that the micro pumps 21 are opened and closed, the rhythm of hot water and cold water circulation is controlled, and the influence of the hysteresis temperature of the shape memory alloy on the work of the piston type solid-state heat energy conversion device 5 is reduced as much as possible.
Shape Memory Alloy (SMA), a novel functional metallic material, which was produced in the early sixties of the last century, has excellent shape memory effect and pseudo-elasticity, the shape memory alloy can be changed through a certain temperature field and a certain force field, larger displacement and driving force are output, particularly, large restoring force can be generated when martensite phase transformation occurs, the shape memory alloy can be made into a driver and the like to be applied to the field of intelligent robots, and the shape memory alloy is widely applied to many fields including electromechanics, aerospace, medical appliances, automobiles and the like at present, the shape memory alloy comprises a piston type solid-state thermal energy conversion device 5 designed by means of the characteristics of the shape memory alloy, and the shape memory alloy of the SMA spring 7 in the embodiment is preferably TiNi-based shape memory alloy, NiMnGa-based shape memory alloy, NiMnIn shape memory alloy and Co-Ni-based shape memory alloy.
The present embodiment is a chemical energy converter realized by utilizing the change of atomic bonding energy of Shape Memory Alloy (SMA), and the thermal efficiency is quite high even in a low temperature range, so that the power generation technology can be developed by utilizing the energy which cannot be utilized in the low temperature range, the present embodiment can be applied to the power generation department in the low temperature field in the future, the present embodiment is popularized in the society, and meanwhile, the technology of industrial waste heat can be effectively utilized, so that the electric energy of hundreds of kilowatt-hours can be produced, which plays an important role in social energy conservation and environmental protection, and the economic effect is self-evident.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (8)
1. A solid phase thermal energy power generation device based on shape memory alloy is characterized by comprising an energy conversion device (1), an energy transmission device (2) and a generator (23); the energy conversion device (1) comprises piston type solid-state heat energy conversion devices (5), a lever (20), a hot water tank (3) and a cold water tank (4) which are arranged in pairs, the piston type solid-state heat energy conversion devices (5) which are arranged in pairs are respectively communicated with the hot water tank (3) and the cold water tank (4) through pipelines, a connecting shaft (12) of each piston type solid-state heat energy conversion device (5) is connected with the lever (20), and the lever (20) is connected with a hydraulic cylinder A (18); the energy transmission device (2) comprises a hydraulic cylinder A (18) and a hydraulic cylinder B (22) which are connected through a pipeline, and the hydraulic cylinder B (22) is connected with a generator (23); the piston type solid-state thermal energy conversion device (5) comprises a shell (14), an upper piston (6), a lower piston (15) and an SMA spring (7); the bottom of the shell (14) is closed, the top of the shell is open, and the side wall of the shell is provided with a hot water inlet (10), a cold water inlet (11), a hot water outlet (8) and a cold water outlet (9); the upper piston (6) and the lower piston (15) are both positioned in the shell (14), the SMA spring (7) is positioned between the upper piston (6) and the lower piston (15), and the top of the upper piston (6) is provided with a connecting shaft (12);
the bottom of the lower piston (15) extends out of the fixed shaft, the bottom of the fixed shaft is provided with a lower baffle, the side wall of the lower baffle is attached to the shell (14), when the lower piston (15) is positioned at a contraction position, the cold water inlet (11) is positioned above the lower baffle, and when the lower piston (15) is positioned at an extension position, the lower baffle is attached to the bottom of the shell (14);
the piston type solid-state heat energy conversion devices (5) are arranged in pairs, a connecting shaft (12) of one piston type solid-state heat energy conversion device (5) is rotatably connected with the middle part of the lever (20), a connecting shaft (12) of the other piston type solid-state heat energy conversion device (5) is rotatably connected with one end of the lever (20), and the other end of the lever (20) is rotatably connected with a piston rod of a hydraulic cylinder A18; a fulcrum is arranged between connecting points of the lever (20) and the two piston-type solid-state heat energy conversion devices (5), the distances between the connecting point of the two piston-type solid-state heat energy conversion devices (5) and the fulcrum are both L1, the distance between the connecting shaft (12) of one piston-type solid-state heat energy conversion device (5) and the connecting point of the middle rotary connecting point of the lever (20) and the rotary connecting point of the other end of the lever (20) and the piston rod of the hydraulic cylinder A18 is L2, and the distance between the L2 and the connecting point is twice that of the L1;
be equipped with foil gage (19) on the piston rod of pneumatic cylinder A18, operating temperature: -50-350 ℃, resistance: 350 ohms; grid length: 5mm, self-compensating expansion coefficient: 11. 16 × microstrain/° c; the hot water inlet (10) and the hot water outlet (8) are respectively connected with the hot water tank (3) through pipelines, a micro pump (21) is arranged between the hot water tank (3) and the hot water inlet (10), the cold water inlet (11) and the cold water outlet (9) are respectively connected with the cold water tank (4) through pipelines, and the micro pump (21) is arranged between the cold water inlet (11) and the cold water tank (4);
the micropump (21) can be controlled by an AT89C52 singlechip, for more efficient work, a temperature sensor is arranged in the piston type solid-state heat energy conversion device (5) to monitor the real-time temperature in the piston type solid-state heat energy conversion device (5), and information is transmitted to a main control board, so that the micropump (21) is switched on and off, the rhythm of hot water and cold water circulation is controlled, and the influence of the hysteresis temperature of the shape memory alloy on the work of the piston type solid-state heat energy conversion device (5) is reduced as much as possible.
2. The solid-phase thermal power generation device based on the shape memory alloy is characterized in that the middle of the SMA spring (7) is fixed with a shell (14) through a fixing frame (13), the side walls of an upper piston (6) and a lower piston (15) are attached to the shell (14), passages are formed in the upper piston (6) and the lower piston (15), an upper baffle plate is arranged above the upper piston (6), the side wall of the upper baffle plate is attached to the shell (14), and the upper piston (6) and the lower piston (15) slide between an extension position and a contraction position in the shell (14).
3. The solid-phase thermal power generation device based on the shape memory alloy is characterized in that when the upper piston (6) and the lower piston (15) are located at the contraction position, the SMA spring (7) is in the contraction state, the upper piston (6) seals the hot water inlet (10), the hot water outlet (8) is located above the upper piston (6), the upper baffle is located above the hot water outlet (8), the lower piston (15) seals the cold water outlet (9), and the cold water inlet (11) is located below the lower piston (15); when the upper piston (6) and the lower piston (15) are located at the stretching positions, the SMA spring (7) is in a stretching state, the upper piston (6) seals the hot water outlet (8), the hot water inlet (10) is located below the upper piston (6), the lower piston (15) seals the cold water inlet (11), and the cold water outlet (9) is located above the lower piston (15).
4. A shape memory alloy based solid phase thermal power plant according to claim 1, characterized in that the piston type solid state thermal energy conversion device (5) comprises an outer shell (14), an inner core (17) and SMA springs (7); the bottom of the shell (14) is closed, the top of the shell is open, and the side wall of the shell is provided with a hot water inlet (10), a cold water inlet (11), a hot water outlet (8) and a cold water outlet (9); the inner core (17) is positioned in the shell (14), the top of the inner core is provided with an upper piston (6), the bottom of the inner core is provided with an opening, and the side wall of the inner core is provided with openings corresponding to the hot water inlet (10), the cold water inlet (11), the hot water outlet (8) and the cold water outlet (9) respectively; the top of the upper piston (6) is provided with a connecting shaft (12), and the SMA spring (7) is positioned in the inner core (17).
5. The solid-phase thermal power generation device based on the shape memory alloy is characterized in that the bottom of the outer shell (14) is closed through a rear cover (16), the rear cover (16) is provided with a bulge for fixing the SMA spring (7), the side wall of the inner core (17) is attached to the side wall of the outer shell (14), a passage is arranged inside the upper piston (6), the top of the inner core (17) is further provided with an upper baffle plate, the upper baffle plate is positioned above the piston (6), and the inner core (17) slides between an expansion position and a contraction position in the outer shell (14).
6. The solid-phase thermal power generation device based on the shape memory alloy is characterized in that when the inner core (17) is located at the contraction position, the SMA spring (7) is in the contraction state, the side wall of the inner core (17) seals the hot water inlet (10) and the cold water outlet (9), the hot water outlet (8) and the cold water inlet (11) are respectively communicated with corresponding openings on the side wall of the inner core (17), the hot water outlet (8) is located above the upper piston (6), the upper baffle is located above the hot water outlet (8), and the bottom of the inner core (17) is in contact with the rear cover (16); when the inner core (17) is located at the stretching position, the SMA spring (7) is in a stretching state, the side wall of the inner core (17) seals the hot water outlet (8) and the cold water inlet (11), the hot water inlet (10) and the cold water outlet (9) are respectively communicated with corresponding openings on the side wall of the inner core (17), the hot water inlet (10) is located below the upper piston (6), and a gap is reserved between the bottom of the inner core (17) and the rear cover (16); the SMA spring (7) is positioned in a groove-shaped chamber (18) of the inner core (17), one end of the SMA spring (7) is in contact with the bottom of the piston (6), the other end of the SMA spring is in contact with the rear cover (16), and a bulge for fixing the SMA spring (7) extends into the SMA spring (7).
7. The solid-phase thermal power generation device based on the shape memory alloy is characterized in that a piston rod of the hydraulic cylinder A (18) is rotatably connected with the lever (20), a cylinder body of the hydraulic cylinder A (18) is provided with a pipeline communicated with a cylinder body of the hydraulic cylinder B (22), the piston rod of the hydraulic cylinder B (22) is connected with a gear mechanism (24), and the gear mechanism (24) is connected with the generator (23) through a speed regulating wheel (25).
8. The solid-phase thermal power generation device based on the shape memory alloy as claimed in claim 7, characterized in that the gear mechanism (24) comprises three gears, the piston rod of the hydraulic cylinder B (22) is arranged as a rack and meshed with a first gear, the first gear is coaxial with a second gear, the second gear is provided with a one-way ball bearing, the second gear is meshed with a third gear, the third gear is coaxial with a first belt pulley in the speed regulating wheel (25), and a second belt pulley in the speed regulating wheel (25) is connected with the generator (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910926960.3A CN110645158B (en) | 2019-09-27 | 2019-09-27 | Solid phase heat energy power generation device based on shape memory alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910926960.3A CN110645158B (en) | 2019-09-27 | 2019-09-27 | Solid phase heat energy power generation device based on shape memory alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110645158A CN110645158A (en) | 2020-01-03 |
| CN110645158B true CN110645158B (en) | 2021-10-12 |
Family
ID=68992991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910926960.3A Active CN110645158B (en) | 2019-09-27 | 2019-09-27 | Solid phase heat energy power generation device based on shape memory alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110645158B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111188746B (en) * | 2020-01-10 | 2024-03-15 | 湖南汽车工程职业学院 | Power generation device driven by shape memory alloy |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1153257A (en) * | 1995-12-26 | 1997-07-02 | 官敏贵 | Method and apparatus for gaining electric energy |
| EP2290238A1 (en) * | 2002-10-09 | 2011-03-02 | Abbott Diabetes Care Inc. | Plunger pump actuated by a shape memory element |
| CN106764246A (en) * | 2017-03-23 | 2017-05-31 | 大连大学 | Based on the pipe robot that marmem drives |
-
2019
- 2019-09-27 CN CN201910926960.3A patent/CN110645158B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1153257A (en) * | 1995-12-26 | 1997-07-02 | 官敏贵 | Method and apparatus for gaining electric energy |
| EP2290238A1 (en) * | 2002-10-09 | 2011-03-02 | Abbott Diabetes Care Inc. | Plunger pump actuated by a shape memory element |
| CN106764246A (en) * | 2017-03-23 | 2017-05-31 | 大连大学 | Based on the pipe robot that marmem drives |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110645158A (en) | 2020-01-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109742976B (en) | Static temperature difference power generation device based on high-temperature heat pipe heat transfer | |
| BG110419A (en) | Method and layout of a heat hydro engine for the transformation of thermal energy into mechanic | |
| CN101705924B (en) | Solar energy heat radiation direct drive heat engine | |
| Hering et al. | Application of liquid metals for solar energy systems | |
| CN110067711A (en) | A kind of ocean thermal energy power hydraulic system | |
| CN106104082B (en) | Power conversion system is directly driven for the wind turbine suitable for energy stores | |
| CN102427320B (en) | Thermoelectric generator using superconducting fluid for heat transfer | |
| CN110645158B (en) | Solid phase heat energy power generation device based on shape memory alloy | |
| JP5878132B2 (en) | Energy converter using Stirling cycle | |
| CN102654114B (en) | Energy harvesting system | |
| CN102536367A (en) | Waste heat power generation method of Stirling engine | |
| TR200603229T1 (en) | Solar collector assembly. | |
| CN110529348B (en) | Heat engine device for realizing heat energy-mechanical energy conversion by utilizing shape memory alloy | |
| CN110566421B (en) | Heat engine device for realizing heat energy-mechanical energy conversion by utilizing solid working medium | |
| US20110138800A1 (en) | Electricity-Generating Heat Conversion Device and System | |
| EP3779166B1 (en) | Thermal and electrical power transformer | |
| CN202100342U (en) | Hybrid heating power closed type heat extraction cycle heat-engine and power-generating device | |
| CN102628431A (en) | Vortex plate of vortex expander for organic Rankine cycle power generation system | |
| EP3059428B1 (en) | Differential thermodynamic machine with a cycle of eight thermodynamic transformations, and control method | |
| US8387379B2 (en) | Electricity generation device using hot gas engine | |
| WO2016137442A1 (en) | A turbine and method of making and using the same | |
| CN203515854U (en) | Thermo-acoustic-driven Stirling engine | |
| US20150369124A1 (en) | Heat engine operating in accordance with carnot's thermodynamic cycle and control process | |
| GB2472604A (en) | Free piston thermo electrical power generator | |
| CN103485931A (en) | Thermoacoustic driven stirling engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |