CN113623041A - Low-temperature heat source liquid working medium energy storage expansion with heat and contraction with cold driving hydraulic piston engine power generation system - Google Patents
Low-temperature heat source liquid working medium energy storage expansion with heat and contraction with cold driving hydraulic piston engine power generation system Download PDFInfo
- Publication number
- CN113623041A CN113623041A CN202111087643.0A CN202111087643A CN113623041A CN 113623041 A CN113623041 A CN 113623041A CN 202111087643 A CN202111087643 A CN 202111087643A CN 113623041 A CN113623041 A CN 113623041A
- Authority
- CN
- China
- Prior art keywords
- working medium
- cold
- heat
- pool
- power generation
- 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.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B1/00—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements
- F01B1/06—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements with cylinders in star or fan arrangement
- F01B1/062—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements with cylinders in star or fan arrangement the connection of the pistons with an actuating or actuated element being at the inner ends of the cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B23/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01B23/10—Adaptations for driving, or combinations with, electric generators
-
- 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
- F03G6/00—Devices for producing mechanical power from solar energy
- F03G6/06—Devices for producing mechanical power from solar energy with solar energy concentrating means
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a low-temperature heat source liquid working medium energy storage expansion with heat and contraction with cold driving hydraulic piston engine power generation system, wherein a high-pressure tank is communicated with a cylinder body through a liquid guide pipe, a piston is arranged in the cylinder body and is connected in the cylinder body in a sliding mode, one end, deviating from the liquid guide pipe, of the piston is connected with one end of a telescopic connecting rod, the other end of the telescopic connecting rod is in transmission connection with a power input shaft of a generator through a crankshaft, and the high-pressure tank circularly moves between a hot working medium pool and a cold working medium pool. The technical effects achieved are as follows: the high-pressure tank is communicated with the cylinder body through a liquid guide pipe, a piston is arranged in the cylinder body and is connected in a sliding mode in the cylinder body, one end, deviating from the liquid guide pipe, of the piston is connected with one end of a telescopic connecting rod, the other end of the telescopic connecting rod is in transmission connection with a power input shaft of a generator through a crankshaft, and the high-pressure tank is in circulating movement between the hot working medium pool and the cold working medium pool.
Description
Technical Field
The invention relates to the technical field of power generation systems, in particular to a low-temperature heat source liquid working medium energy storage expansion with heat and contraction with cold driving hydraulic piston engine power generation system.
Background
The existing technology for generating electricity by utilizing a heat source generally adopts a high-temperature heat source for generating electricity, such as solar fused salt photo-thermal power generation, and the fused salt is heated by utilizing sunlight condensed by a multi-surface reflector, and then high-pressure steam generated by utilizing the high-temperature fused salt is utilized to drive a steam turbine which drives a generator; the dry hot rock power generation is to utilize geothermal energy in the underground depth to manufacture high-pressure steam power generation; the solar Stirling power generation utilizes a condensing lens to condense sunlight to heat a Stirling engine to drive a generator to generate power. In fact, all the current technologies of generating electricity by using a steam turbine can be classified into high-temperature heat source power generation, such as coal power, nuclear power, oil power and the like, and the power generation by using a widely-existing and cheap low-temperature heat source is not developed all the time. The phenomenon mainly occurs because the energy density of the low-temperature heat source is too low, no high-efficiency low-temperature heat source energy conversion method is found at present, and low-cost low-temperature heat source utilization cannot be realized, so that the utilization of the low-temperature heat source at present is mainly concentrated on environment-friendly projects such as industrial waste gas waste heat utilization and the like, and large-scale utilization cannot be realized.
The main disadvantage of the existing low-temperature heat source utilization is that the technology for collecting, storing and converting the low-temperature heat source is not mature enough and cannot be compared with the mature high-temperature heat source utilization. The most central reason is the low energy density of the low temperature heat source, which leads to a high combined cost of capture and conversion. For example, the heat energy of the industrial waste gas is generally used for heating residents and is rarely used for generating electricity, because the energy density of the industrial waste gas is low, and the industrial waste gas is difficult to convert into effective mechanical energy.
At present, the utilization of air energy is mainly used for heating, for example, an air energy heat pump cannot achieve the degree of generating electricity.
The most widely used low-temperature heat source at present is solar energy, and is mainly used for heating water by a solar water heater for bathing or warming.
That is, there is no efficient method for converting a low-temperature heat source into mechanical energy and then converting the mechanical energy into electrical energy.
Disclosure of Invention
Therefore, the invention provides a low-temperature heat source liquid working medium energy storage expansion with heat and contraction with cold driving hydraulic piston engine power generation system, which aims to solve two problems existing in the low-temperature heat source power generation technology in the prior art:
1. the conversion of heat energy to mechanical energy is efficient and low in cost;
2. efficient storage of thermal energy.
In order to achieve the above purpose, the invention provides the following technical scheme:
according to the first aspect of the invention, the low-temperature heat source liquid working medium energy storage thermal expansion and cold contraction driving hydraulic piston engine power generation system comprises a high-pressure tank, a liquid guide pipe, a cylinder body, a piston, a telescopic connecting rod, a crankshaft, a generator, a hot working medium pool and a cold working medium pool, wherein the high-pressure tank is communicated with the cylinder body through the liquid guide pipe, the piston is arranged in the cylinder body and is connected in the cylinder body in a sliding mode, one end, away from the liquid guide pipe, of the piston is connected with one end of the telescopic connecting rod, the other end of the telescopic connecting rod is in transmission connection with a power input shaft of the generator through the crankshaft, and the high-pressure tank circularly moves between the hot working medium pool and the cold working medium pool.
Further, including high-pressure tank, liquid pipe, cylinder body, piston, telescopic connecting rod, bent axle, generator, hot working medium pond and cold working medium pond, the high-pressure tank passes through the liquid pipe with the cylinder body intercommunication, be provided with in the cylinder body the piston, piston sliding connection be in the cylinder body, the piston deviates from the one end of liquid pipe with telescopic connecting rod's one end is connected, telescopic connecting rod's the other end passes through the bent axle with the power input shaft transmission of generator is connected, the high-pressure tank is in hot working medium pond reaches cycle shift between the cold working medium pond.
Further, including high-pressure tank, liquid pipe, cylinder body, piston, telescopic connecting rod, bent axle, generator, hot working medium pond and cold working medium pond, the high-pressure tank passes through the liquid pipe with the cylinder body intercommunication, be provided with in the cylinder body the piston, piston sliding connection be in the cylinder body, the piston deviates from the one end of liquid pipe with telescopic connecting rod's one end is connected, telescopic connecting rod's the other end passes through the bent axle with the power input shaft transmission of generator is connected, the high-pressure tank is in hot working medium pond reaches cycle shift between the cold working medium pond.
The power generator further comprises a bevel gear commutator and a gearbox, the upper end of the transmission shaft is in transmission connection with an input shaft of the gearbox through the bevel gear commutator, and an output shaft of the gearbox is in transmission connection with a power input shaft of the power generator.
Further, still include the platform, the platform interval sets up the top of carousel, the generator reaches the gearbox is all installed on the platform.
Further, the cylinder body structure further comprises an annular reinforcing plate, the liquid guide pipes of all the cylinder bodies are fixed in the annular reinforcing plate, and the annular reinforcing plate is fixed on the annular cylindrical structure formed by enclosing the high-pressure tanks.
The hot working medium pool and the cold working medium pool are both of semicircular structures, the cold and hot isolation belt is arranged at the joint of the hot working medium pool and the cold working medium pool, and the outer curvature radius of the cold and hot isolation belt, the outer diameter of the hot working medium pool and the outer diameter of the cold working medium pool are equal.
The heat-insulating layer is wrapped on the outer peripheral side of the hot working medium pool and the outer peripheral side of the cold working medium pool.
Further, the solar heat collecting system comprises a heat collecting system, a first heat exchanger, a second heat exchanger, a third heat exchanger and a heat exchange pool, wherein the first heat exchanger is arranged in the hot working medium pool, the second heat exchanger is arranged in the heat exchange pool, the first heat exchanger is communicated with the second heat exchanger through a pipeline, the third heat exchanger is also arranged in the heat exchange pool, the heat collecting system is arranged above the heat exchange pool at intervals, the heat collecting system is communicated with the third heat exchanger through a pipeline, and the heat collecting system is a solar heat collecting system.
The heat collector further comprises a circulating pump, the circulating pump is arranged on a pipeline between the first heat exchanger and the second heat exchanger, and the circulating pump is arranged on a pipeline between the third heat exchanger and the heat collecting system.
The invention has the following advantages: the device absorbs and stores the heat energy of the low-temperature heat source by using the liquid working medium, and drives the hydraulic piston to move by using the heat energy of the liquid working medium so as to convert the heat energy of the low-temperature heat source into mechanical energy; the reciprocating motion of the hydraulic piston is driven to be converted into circular motion by the expansion with heat and contraction with cold of the liquid working medium; the rotation of the turntable drives the high-pressure tank filled with the liquid working medium to switch between the high-temperature liquid working medium pool and the low-temperature liquid working medium pool, so that circulating power is provided for the rotation of the system; the device utilizes the expansion and contraction characteristic of liquid, utilizes the expansion and contraction characteristic of liquid to drive the piston of the hydraulic cylinder to move, converts heat energy into mechanical energy, converts the mechanical energy into electric energy through the generator, realizes the conversion of the heat energy into the mechanical energy with high efficiency and low cost, and realizes the high-efficiency storage of the heat energy.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
Fig. 1 is a schematic diagram of a power generation system of a low-temperature heat source liquid working medium energy storage expansion with heat and contraction with cold driving hydraulic piston engine according to some embodiments of the present invention.
Fig. 2 is a partial structural view of a power generation system of a low-temperature heat source liquid working medium energy storage thermal expansion and cold contraction driving hydraulic piston engine according to some embodiments of the present invention.
Fig. 3 is a schematic view of a working principle of a power generation system of a low-temperature heat source liquid working medium energy storage expansion with heat and contraction with cold driving hydraulic piston engine according to some embodiments of the present invention.
Fig. 4 is a structural diagram of a power generation system of a low-temperature heat source liquid working medium energy storage expansion with heat and contraction with cold driving hydraulic piston engine according to some embodiments of the present invention.
Fig. 5 is a partial structural view of a power generation system of a low-temperature heat source liquid working medium energy storage expansion with heat and contraction with cold driving hydraulic piston engine according to some embodiments of the present invention.
Fig. 6 is a front view of a power generation system of a low-temperature heat source liquid working medium energy storage expansion with heat and contraction with cold driving hydraulic piston engine according to some embodiments of the invention.
Fig. 7 is a partial structural view of a power generation system of a low-temperature heat source liquid working medium energy storage expansion with heat and contraction with cold driving hydraulic piston engine according to some embodiments of the present invention.
Fig. 8 is a partial structural view of a power generation system of a low-temperature heat source liquid working medium energy storage expansion with heat and contraction with cold driving hydraulic piston engine according to some embodiments of the present invention.
Fig. 9 is an installation schematic diagram of a power generation system of a low-temperature heat source liquid working medium energy storage expansion with heat and contraction with cold driving hydraulic piston engine according to some embodiments of the present invention.
In the figure: 1. the high-pressure tank comprises a high-pressure tank, 2, a liquid guide pipe, 3, a cylinder body, 4, a piston, 5, a telescopic connecting rod, 6, a crankshaft, 7, a hot working medium pool, 8, a cold working medium pool, 9, a rotary table, 10, a cold and heat isolation belt, 11, a heat insulation layer, 12, a gearbox, 13, a generator, 14, a mounting rod, 15, a driving gear ring, 16, a driven gear, 17, a transmission shaft, 18, a platform, 19, a bevel gear commutator, 20, a main shaft, 21, a connecting rod collecting disc, 22, an annular reinforcing plate, 23, a first heat exchanger, 24, a second heat exchanger, 25, a third heat exchanger, 26, a circulating pump, 27, a heat collecting system, 28 and a heat exchange pool.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 7, the low-temperature heat source liquid working medium energy storage thermal expansion and cold contraction driving hydraulic piston engine power generation system in the first embodiment of the invention includes a high-pressure tank 1, a liquid conduit 2, a cylinder 3, a piston 4, a telescopic connecting rod 5, a crankshaft 6, a generator 13, a hot working medium pool 7 and a cold working medium pool 8, the high-pressure tank 1 is communicated with the cylinder 3 through the liquid conduit 2, the piston 4 is arranged in the cylinder 3, the piston 4 is slidably connected in the cylinder 3, one end of the piston 4, which is away from the liquid conduit 2, is connected with one end of the telescopic connecting rod 5, the other end of the telescopic connecting rod 5 is in transmission connection with a power input shaft of the generator 13 through the crankshaft 6, and the high-pressure tank 1 circularly moves between the hot working medium pool 7 and the cold working medium pool 8.
In the above embodiments, it should be noted that the high-pressure tank 1 is filled with a stable liquid working medium having a large thermal expansion coefficient, such as kerosene.
As shown in fig. 1, the working principle of this embodiment is as follows: pushing the piston to reciprocate by using the thrust generated by expansion with heat and contraction with cold of the liquid working medium in the sealed container, and converting the reciprocating motion of the piston into circular motion through a crankshaft; when the high-pressure tank 1 invades the hot working medium pool 7, the liquid in the high-pressure tank 1 is heated and expanded, and the liquid working medium flows into the cylinder body 3 from the high-pressure tank 1 to push the piston 4 and the telescopic connecting rod 5 to extend out; when the high-pressure tank 1 invades into the cold working medium pool 8 from the hot working medium pool 7 along with the rotating device, the liquid working medium in the high-pressure tank 1 begins to shrink, and the liquid working medium flows back to the high-pressure tank 1 from the inside of the cylinder body 3, so that the piston 4 and the telescopic connecting rod 5 are retracted.
As shown in fig. 3, the reciprocating motion of the piston 4 and the telescopic connecting rod 5 can not only drive the crankshaft 6 to rotate, but also drive the self-motion; if the crank of the crankshaft 6 is fixed, the motion of the piston 4 and the telescopic connecting rod 5 can drive the motion of the cylinder 3; the root of the cylinder body 3 is fixed on the rotary table, the position of the fixed shaft is relatively fixed, and when the piston 4 and the telescopic connecting rod 5 reciprocate, the fixed rotary table can be driven to rotate.
Although the speed of liquid expansion with heat and contraction with cold is slower, the force is huge, the conversion efficiency of energy is high, the heat energy can be efficiently converted into mechanical energy of piston motion, the device circularly moves between a hot working medium pool 7 and a cold working medium pool 8 through a high-pressure tank 1, and the expansion and contraction force of the liquid working medium is utilized to drive the hydraulic piston 4 to stretch.
The technical effects achieved by the above embodiment are as follows: the device absorbs and stores the heat energy of the low-temperature heat source by using the liquid working medium, and drives the hydraulic piston to move by using the heat energy of the liquid working medium so as to convert the heat energy of the low-temperature heat source into mechanical energy; the reciprocating motion of the hydraulic piston is driven to be converted into circular motion by the expansion with heat and contraction with cold of the liquid working medium; the rotation of the turntable drives the high-pressure tank filled with the liquid working medium to switch between the high-temperature liquid working medium pool and the low-temperature liquid working medium pool, so that circulating power is provided for the rotation of the system; the device utilizes the expansion and contraction characteristic of liquid, utilizes the expansion and contraction characteristic of liquid to drive the piston of the hydraulic cylinder to move, converts heat energy into mechanical energy, converts the mechanical energy into electric energy through the generator, realizes the conversion of the heat energy into the mechanical energy with high efficiency and low cost, and realizes the high-efficiency storage of the heat energy.
Optionally, as shown in fig. 1 to 7, in some embodiments, the system further includes a main shaft 20, a turntable 9, a plurality of mounting rods 14, and a connecting rod collecting disc 21, where the plurality of high-pressure tanks 1 form an annular cylindrical structure, the annular cylindrical structure can rotate in a circulating manner in a combination of the hot working medium pool 7 and the cold working medium pool 8, each high-pressure tank 1 is connected with a cylinder 3, all the cylinders 3 are fixed on the turntable 9 through the mounting rods 14, all the telescopic connecting rods 5 are hinged on the connecting rod collecting disc 21, the connecting rod collecting disc 21 is connected with the main shaft 20 through a crankshaft 6, and the turntable 9 can rotate around the main shaft 20 in a circulating manner.
In the above-mentioned alternative embodiment, it should be noted that, as shown in fig. 4, in order to make the rotation of the rotary table 9 smooth, a larger number of hydraulic cylinders 3 and high-pressure tanks 1 may be adopted, the cylinders 3 and the high-pressure tanks 1 are fixed on the rotary table 9, the rotary table 9 is driven to rotate by the movement of the pistons 4 and the telescopic connecting rods 5, and the rotary table 9 drives the high-pressure tanks 1 to switch between the cold working medium pool 8 and the hot working medium pool 7, so as to realize the continuous rotation of the rotary table 9.
In order to enable the high-pressure tanks 1 to drive the cold and hot working media to be mixed with each other as little as possible when the high-pressure tanks 1 move between the cold working medium pool 8 and the hot working medium pool 7, a plurality of high-pressure tanks 1 can be connected into a whole to be manufactured into an annular cylindrical structure as shown in figure 4, the inside of the annular cylindrical structure is divided into a plurality of high-pressure containers by partitions, and the high-pressure tanks (containers) integrated in such a way can reduce the mixing of the cold and hot working media passing through the partitions when passing through the partitions between the cold and hot working medium pools, thereby reducing the energy loss.
When the integrated high-pressure tank (a part of the annular cylinder) penetrates through the cold heat isolation belt from the cold working medium pool 8 to enter the hot working medium pool 7, the liquid working medium in the high-pressure tank 1 starts to be heated and expanded, and the liquid working medium starts to flow into the cylinder body 3 from the high-pressure tank 1, so that the hydraulic piston 4 and the telescopic connecting rod 5 extend outwards; the gradually extending telescopic connecting rod 5 drives the annular cylindrical structure of the integrated high-pressure tank and the turntable 9 to rotate, so that the high-pressure tank 1 is driven to continuously move in the working medium pool and continuously switch between a cold working medium pool and a hot working medium pool, and heat energy is converted into mechanical energy; the top view of the cold and hot working medium pool is shown in the following FIG. 5
Optionally, as shown in fig. 1 to 7, in some embodiments, the rotating disk further includes a driving ring gear 15, a driven gear 16, and a transmission shaft 17, the driving ring gear 15 is fixed on an outer peripheral side of the rotating disk 9, the driven gear 16 is fixed on a lower end of the transmission shaft 17, an upper end of the transmission shaft 17 is in transmission connection with a power input shaft of the generator 13, and the driving ring gear 15 is in meshing transmission with the driven gear 16.
Optionally, as shown in fig. 1 to 7, in some embodiments, the power generator further includes a bevel gear reverser 19 and a gearbox 12, an upper end of the transmission shaft 17 is in transmission connection with an input shaft of the gearbox 12 through the bevel gear reverser 19, and an output shaft of the gearbox 12 is in transmission connection with a power input shaft of the generator 13.
Optionally, as shown in fig. 1 to 7, in some embodiments, a platform 18 is further included, the platform 18 is disposed above the turntable 9 at intervals, and the generator 13 and the gearbox 12 are both mounted on the platform 18.
Alternatively, as shown in fig. 1 to 8, in some embodiments, the cylinder block further includes an annular reinforcing plate 22, the liquid conduits 2 of all the cylinder blocks 3 are fixed in the annular reinforcing plate 22, and the annular reinforcing plate 22 is fixed on an annular cylindrical structure surrounded by the plurality of high-pressure tanks 1.
In the above alternative embodiment, it should be noted that, as shown in fig. 8, since the integrated high-pressure tank needs to rotate synchronously with the rotating disc 9, and the rotating disc 9 needs to stabilize the annular cylinder of the integrated annular high-pressure tank, a plurality of pipes for connecting the hydraulic pistons need to be integrated on the integrated annular high-pressure tank to form an annular reinforcing plate 22, and such a structure can reduce the mixing of the cold and hot working mediums when the annular reinforcing plate 22 passes through the cold and heat isolation zone 10.
Optionally, as shown in fig. 1 to 7, in some embodiments, the thermal insulation system further includes a cold-heat isolation strip 10, the thermal working medium pool 7 and the cold working medium pool 8 are both semicircular structures, the cold-heat isolation strip 10 is disposed at a joint of the thermal working medium pool 7 and the cold working medium pool 8, and an outer curvature radius of the cold-heat isolation strip 10, an outer diameter of the thermal working medium pool 7, and an outer diameter of the cold working medium pool 8 are equal to each other.
In the above optional embodiment, it should be noted that a cold-heat isolation strip 10 is provided between the hot working medium pool 7 and the cold working medium pool 8, and the size of the inner and outer curvature radii of the cold-heat isolation strip 10 and the external size of the integrated high-pressure tank are tightly combined to form a sealed structure, so that energy loss caused by mixing of cold and hot working media when the annular cylinder of the integrated high-pressure tank passes through the cold-heat isolation strip 10 can be avoided.
Optionally, as shown in fig. 1 to 7, in some embodiments, the thermal insulation system further includes an insulation layer 11, and the insulation layer 11 is wrapped around the outer peripheral side of the hot working medium pool 7 and the outer peripheral side of the cold working medium pool 8.
In the above alternative embodiment, it should be noted that, in order to reduce energy loss, heat insulating layers 11 are disposed around the hot working medium pool 7 and the cold working medium pool 8, heat insulating covers are also disposed on the heat insulating layers, and heat insulating materials should be used for the cold and heat insulating strips 10.
The side view of the power generation system of the hydraulic piston engine driven by expansion with heat and contraction with cold is shown in fig. 6, the crank of the crankshaft 6 is kept still, and the piston and the turntable 9 can rotate, wherein the key structure is shown in fig. 7; the crank shaft does not rotate, and the connecting rod gathering disc 21 of the gathering connecting rod can rotate, so that the rotating disc can rotate by taking the main shaft 20 as the center along with the extension and contraction of the piston connecting rod; the periphery of the rotary table 9 is provided with a driving gear ring 15, when the rotary table 9 rotates, a transmission shaft 17 is driven to rotate through a gear, and the rotation of the rotary table 9 is transmitted to a generator 13 through a gearbox 12 to generate electricity.
Optionally, as shown in fig. 9, in some embodiments, the heat collecting system further includes a heat collecting system 27, a first heat exchanger 23, a second heat exchanger 24, a third heat exchanger 25, and a heat exchange pool 28, the first heat exchanger 23 is disposed in the hot working medium pool 7, the second heat exchanger 24 is disposed in the heat exchange pool 28, the first heat exchanger 23 is communicated with the second heat exchanger 24 through a pipeline, the third heat exchanger 25 is also disposed in the heat exchange pool 28, the heat collecting system 27 is disposed above the heat exchange pool 28 at intervals, the heat collecting system 27 is communicated with the third heat exchanger 25 through a pipeline, and the heat collecting system 27 is a solar heat collecting system 27.
In the above alternative embodiment, it should be noted that the heat collecting system 27 may also be a low-temperature heat source heat collecting system other than the solar heat collecting system 27.
Optionally, as shown in fig. 9, in some embodiments, the heat collector further includes a circulation pump 26, the circulation pump 26 is disposed on a pipeline between the first heat exchanger 23 and the second heat exchanger 24, and the circulation pump 26 is disposed on a pipeline between the third heat exchanger 25 and the heat collecting system 27.
In the above optional embodiment, it should be noted that the device stores energy in the heat preservation tank by using a liquid working medium with high specific heat, so that low-cost storage of solar energy and other heat energy can be realized.
In the above embodiments, it should be noted that: .
The three major parts are needed for forming a complete low-temperature heat source power generation system by utilizing the device:
1. solar energy collection systems (or other low temperature heat source collection systems);
2. a liquid working medium energy storage system;
3. the thermal expansion and the cold contraction drive the hydraulic piston engine power generation system.
The beneficial effects of the above alternative embodiment are:
1. the device can realize the high-efficiency and low-cost utilization of the low-temperature heat source; for example, a solar heat collection device is used for collecting solar energy, the solar energy is stored in a liquid working medium with high specific heat capacity, and the stored energy of the liquid working medium is used for driving thermal expansion and cold contraction to drive a hydraulic piston engine power generation system;
2. the device can theoretically improve the overall efficiency of solar power generation to more than 45%, and the estimation basis is as follows: the light-heat conversion rate of the solar heat collecting system is 85% (such as purple crystal tube heat collection); the long-term heat retention rate of the liquid medium energy storage system can reach 85% (depending on the insulating layer); the efficiency of driving the hydraulic piston engine by the energy storage liquid working medium with expansion caused by heat and contraction caused by cold can reach 70%; the efficiency of the generator can reach 90%; this result (45.5%) is much higher than the conversion of current photovoltaic power generation (20%);
3. the liquid medium in the heat-insulation energy storage container is used for storing energy, so that uninterrupted and continuous and stable current which is not influenced by weather can be supplied to the system and injected into a power grid, and the problem of instability of the traditional solar power generation system is thoroughly solved;
4. the cost of the device is far lower than that of the existing high-temperature heat source power generation technology, mainly the price of a solar heat collection system is far lower than that of a solar hot molten salt system, a dry hot rock system and a photovoltaic system, and the price of a liquid medium energy storage system is far lower than that of a storage battery; while some cost may be added to expanding and contracting a hydraulic piston engine, the added cost is extremely limited.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications in the relative relationship may be made without substantial changes in the technical content.
Claims (10)
1. The low-temperature heat source liquid working medium energy storage thermal expansion and cold contraction driving hydraulic piston engine power generation system is characterized by comprising a high-pressure tank (1), a liquid guide pipe (2), a cylinder body (3), a piston (4), a telescopic connecting rod (5), a crankshaft (6), a generator (13), a hot working medium pool (7) and a cold working medium pool (8), the high-pressure tank (1) is communicated with the cylinder body (3) through the liquid conduit (2), the piston (4) is arranged in the cylinder body (3), the piston (4) is connected in the cylinder body (3) in a sliding way, one end of the piston (4) departing from the liquid conduit (2) is connected with one end of the telescopic connecting rod (5), the other end of the telescopic connecting rod (5) is in transmission connection with a power input shaft of the generator (13) through the crankshaft (6), the high-pressure tank (1) circularly moves between the hot working medium pool (7) and the cold working medium pool (8).
2. The low-temperature heat source liquid working medium energy storage thermal expansion and cold contraction driving hydraulic piston engine power generation system according to claim 1, further comprising a main shaft (20), a rotary table (9), a plurality of high-pressure tanks (1) and a connecting rod collection disc (21), wherein the high-pressure tanks (1) form an annular cylindrical structure, the annular cylindrical structure can rotate in a circulating manner in a combination body of the hot working medium pool (7) and the cold working medium pool (8), each high-pressure tank (1) is connected with a cylinder body (3), all the cylinder bodies (3) are fixed on the rotary table (9) through the mounting rods (14), all the telescopic connecting rods (5) are hinged on the connecting rod collection disc (21), and the connecting rod collection disc (21) is connected with the main shaft (20) through the crankshaft (6), the rotary table (9) can rotate around the main shaft (20) in a circulating mode.
3. The low-temperature heat source liquid working medium energy storage thermal expansion and cold contraction driving hydraulic piston engine power generation system according to claim 2, further comprising a driving gear ring (15), a driven gear (16) and a transmission shaft (17), wherein the driving gear ring (15) is fixed on the outer peripheral side of the rotary table (9), the driven gear (16) is fixed at the lower end of the transmission shaft (17), the upper end of the transmission shaft (17) is in transmission connection with a power input shaft of the generator (13), and the driving gear ring (15) is in meshing transmission with the driven gear (16).
4. The low-temperature heat source liquid working medium energy storage thermal expansion and cold contraction driving hydraulic piston engine power generation system according to claim 3, further comprising a bevel gear reverser (19) and a gearbox (12), wherein the upper end of the transmission shaft (17) is in transmission connection with an input shaft of the gearbox (12) through the bevel gear reverser (19), and an output shaft of the gearbox (12) is in transmission connection with a power input shaft of the generator (13).
5. The low-temperature heat source liquid working medium energy storage expansion with heat and contraction with cold driving hydraulic piston engine power generation system according to claim 4, further comprising a platform (18), wherein the platform (18) is arranged above the turntable (9) at intervals, and the generator (13) and the gearbox (12) are both mounted on the platform (18).
6. The low-temperature heat source liquid working medium energy storage expansion with heat and contraction with cold driving hydraulic piston engine power generation system according to claim 5, further comprising an annular reinforcing plate (22), wherein the liquid conduits (2) of all the cylinder bodies (3) are fixed in the annular reinforcing plate (22), and the annular reinforcing plate (22) is fixed on the annular cylindrical structure enclosed by the high-pressure tanks (1).
7. The low-temperature heat source liquid working medium energy storage thermal expansion and cold contraction driving hydraulic piston engine power generation system according to claim 6, further comprising a cold and heat isolation belt (10), wherein the hot working medium pool (7) and the cold working medium pool (8) are both in semicircular structures, the cold and heat isolation belt (10) is arranged at the joint of the hot working medium pool (7) and the cold working medium pool (8), and the outer side curvature radius of the cold and heat isolation belt (10), the outer diameter of the hot working medium pool (7) and the outer diameter of the cold working medium pool (8) are equal.
8. The low-temperature heat source liquid working medium energy storage thermal expansion and cold contraction driving hydraulic piston engine power generation system according to claim 7, further comprising an insulating layer (11), wherein the insulating layer (11) is wrapped on the outer peripheral side of the hot working medium pool (7) and the outer peripheral side of the cold working medium pool (8).
9. The low-temperature heat source liquid working medium energy storage thermal expansion and cold contraction driving hydraulic piston engine power generation system of claim 1, it is characterized by also comprising a heat collecting system (27), a first heat exchanger (23), a second heat exchanger (24), a third heat exchanger (25) and a heat exchange pool (28), the first heat exchanger (23) is arranged in the hot working medium pool (7), the second heat exchanger (24) is arranged in the heat exchange pool (28), the first heat exchanger (23) is communicated with the second heat exchanger (24) through a pipeline, the third heat exchanger (25) is also arranged in the heat exchange pool (28), the heat collecting system (27) is arranged above the heat exchange pool (28) at intervals, the heat collecting system (27) is communicated with the third heat exchanger (25) through a pipeline, and the heat collecting system (27) is a solar heat collecting system (27).
10. The power generation system of the low-temperature heat source liquid working medium energy storage expansion with heat and contraction with cold driving hydraulic piston engine as claimed in claim 9, further comprising a circulating pump (26), wherein the circulating pump (26) is arranged on a pipeline between the first heat exchanger (23) and the second heat exchanger (24), and the circulating pump (26) is arranged on a pipeline between the third heat exchanger (25) and the heat collecting system (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111087643.0A CN113623041A (en) | 2021-09-16 | 2021-09-16 | Low-temperature heat source liquid working medium energy storage expansion with heat and contraction with cold driving hydraulic piston engine power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111087643.0A CN113623041A (en) | 2021-09-16 | 2021-09-16 | Low-temperature heat source liquid working medium energy storage expansion with heat and contraction with cold driving hydraulic piston engine power generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113623041A true CN113623041A (en) | 2021-11-09 |
Family
ID=78390234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111087643.0A Pending CN113623041A (en) | 2021-09-16 | 2021-09-16 | Low-temperature heat source liquid working medium energy storage expansion with heat and contraction with cold driving hydraulic piston engine power generation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113623041A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116370996A (en) * | 2023-05-25 | 2023-07-04 | 河北新欣园能源股份有限公司 | High-efficient high-purity splitter of methyl tertiary butyl ether |
-
2021
- 2021-09-16 CN CN202111087643.0A patent/CN113623041A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116370996A (en) * | 2023-05-25 | 2023-07-04 | 河北新欣园能源股份有限公司 | High-efficient high-purity splitter of methyl tertiary butyl ether |
| CN116370996B (en) * | 2023-05-25 | 2023-09-12 | 河北新欣园能源股份有限公司 | High-efficient high-purity splitter of methyl tertiary butyl ether |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106014891B (en) | A kind of groove type solar association circulating power generation system | |
| CN106568213A (en) | Solar energy storing heat collector and solar heat collecting system | |
| CN107956660B (en) | A kind of circulating phase-change cavity rotary-type thermal electrical switching device | |
| CN106870199A (en) | A kind of honourable cogeneration machine | |
| CN113623041A (en) | Low-temperature heat source liquid working medium energy storage expansion with heat and contraction with cold driving hydraulic piston engine power generation system | |
| CN105910298B (en) | A kind of band accumulation of heat disc type solar energy free piston stirling electricity generation system | |
| CN111102142A (en) | Tower type solar thermal power generation system based on supercritical fluid | |
| CN103727509B (en) | A kind of cavity-type solar steam boiler | |
| CN216008631U (en) | Low-temperature heat source liquid working medium energy storage expansion with heat and contraction with cold driving hydraulic piston engine power generation system | |
| CN111486068B (en) | Solar-assisted ocean thermoelectric power generation system | |
| CN216788625U (en) | Solar energy conversion energy storage power supply system | |
| CN202082003U (en) | Stirling low-temperature high-efficiency generating set | |
| CN101586881B (en) | Heat collection type solar photothermoelectric system | |
| CN210087561U (en) | Solar energy-based micro combined cooling, heating and power system | |
| CN203939637U (en) | A kind of solar electrical energy generation and heat-collecting devcie | |
| CN108375199A (en) | For dish-style or the Accumulated Heat Units of tower type solar speculum heat build-up | |
| CN102213487A (en) | Pneumatic wind-driven heating device based on reverse Stirling cycle | |
| CN102146856B (en) | Low-temperature efficient stirling power generation device | |
| CN85108035A (en) | Solar wind-power machine | |
| CN101917090A (en) | Solar power generating equipment | |
| CN205977567U (en) | Sun light and heat stirling power generation facility | |
| CN101839224B (en) | Solar-powered thermal generating set | |
| CN201474883U (en) | Device for transforming natural heat energy into storage energy of flywheel | |
| CN1920300A (en) | Solar energy device | |
| CN111911371B (en) | Efficient compact multifunctional disc type light-gathering power generation system |
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 |