CN112727665B - Rankine cycle type new energy engine system - Google Patents
Rankine cycle type new energy engine system Download PDFInfo
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- CN112727665B CN112727665B CN202110141191.3A CN202110141191A CN112727665B CN 112727665 B CN112727665 B CN 112727665B CN 202110141191 A CN202110141191 A CN 202110141191A CN 112727665 B CN112727665 B CN 112727665B
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- 239000007788 liquid Substances 0.000 claims abstract description 265
- 238000000034 method Methods 0.000 claims abstract description 22
- 230000001172 regenerating effect Effects 0.000 claims description 23
- 239000012530 fluid Substances 0.000 claims description 22
- 238000011084 recovery Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000001704 evaporation Methods 0.000 claims description 5
- 230000008020 evaporation Effects 0.000 claims description 5
- 238000010248 power generation Methods 0.000 abstract description 7
- 238000005381 potential energy Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- 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
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
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- 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
- F01B29/00—Machines or engines with pertinent characteristics other than those provided for in preceding main groups
- F01B29/08—Reciprocating-piston machines or engines not otherwise provided for
- F01B29/10—Engines
- F01B29/12—Steam engines
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- 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
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
A Rankine cycle type new energy engine system comprises a heat exchanger, a piston group, a gas-liquid linkage cylinder, a gas-liquid linkage pump, an impulse turbine, a generator and an evaporator. The evaporator pipeline is connected with the heat exchanger, the heat exchanger pipeline is connected with at least three gas-liquid linkage cylinders, the gas-liquid linkage cylinders are connected with the impulse turbine and the gas-liquid linkage pump through pipelines, the gas-liquid linkage cylinders are connected with the piston group through pipelines, the piston group is connected with the gas-liquid linkage condenser through pipelines, the gas-liquid linkage condenser is connected with the gas-liquid linkage pump through pipelines, the gas-liquid linkage pump is connected with the preheater through pipelines, the preheater is connected with the evaporator through pipelines, and the impulse turbine is coaxially connected with the generator and the liquid working medium pump. The Rankine cycle type new energy engine system disclosed by the invention is reasonable in design, convenient to use, high in low-temperature heat energy utilization rate, capable of improving the power generation efficiency, reducing the loss in the mechanical friction process, greatly improving the heat energy utilization rate and suitable for popularization.
Description
Technical Field
The invention relates to the technical field of new energy, in particular to a Rankine cycle type new energy engine system.
Background
With the increasing problems of environmental pollution, haze, etc., fossil energy is being challenged more and more frequently, and various green energy sources are expected from the day of development. Compared with photovoltaic and wind power, solar photo-thermal power generation has the advantages of heat storage and energy storage, and is an important direction for new energy utilization. Taking concentrating solar thermal power generation (CSP) technology as an example: the concentrated solar radiation energy is used for heating working media, high-pressure steam is generated through a heat exchanger, and a steam turbine is driven to drive a generator to generate electricity. The technology has been developed for decades, and the technical defects of low power generation efficiency and limited low-temperature heat energy utilization are still not solved. Accordingly, a rankine cycle type new energy engine system is provided by those skilled in the art to solve the technical problems in the prior art.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a Rankine cycle type new energy engine system which is reasonable in design, convenient to use, high in low-temperature heat energy utilization rate, capable of improving the power generation efficiency, reducing the loss in the mechanical friction process, greatly improving the heat energy utilization rate and suitable for popularization.
The invention relates to a Rankine cycle type new energy engine system which comprises a heat exchanger, a piston group, a gas-liquid linkage cylinder, a gas-liquid linkage pump, an impulse turbine, a generator and an evaporator. The evaporator pipeline is connected with a heat exchanger, a gaseous expansion working medium formed by evaporation is arranged in the pipeline, and the heat exchanger pipeline is connected with at least three liquid linkage cylinders in a high-pressure, a pressure relief and a low-pressure matching mode respectively. The gas expansion working medium in the gas-liquid linkage cylinder pushes the liquid working medium to shoot the impulse turbine through the pipeline nozzle to do work, and the gas-liquid linkage cylinder is disconnected and communicated with the gas-liquid linkage pump to boost the liquid expansion working medium after doing work. The gas-liquid linkage cylinder is connected with the piston group through a pipeline, the piston group is connected with the gas-liquid linkage condenser through a pipeline, the piston group is communicated when only gaseous expansion working medium exists in the gas-liquid linkage cylinder, the piston group is pushed to do work, and exhaust steam enters the gas-liquid linkage condenser to be condensed. The gas-liquid linkage condenser pipeline is connected with a gas-liquid linkage pump, the gas-liquid linkage pump pipeline is connected with a preheater, the preheater pipeline is connected with an evaporator, the condensed liquid expansion working medium is boosted by the gas-liquid linkage pump, and the liquid expansion working medium enters the evaporator to be evaporated into gaseous expansion working medium after being heated by the preheater. The impulse turbine is coaxially connected with the generator and the liquid working medium pump so as to drive the generator to generate power and the liquid working medium pump to pump the liquid working medium into the other gas-liquid linkage cylinder at low pressure. The piston group drives the heat recovery working medium to absorb heat from the gas-liquid linkage condenser and liquefy and release heat in the evaporator, and the heat recovery working medium returns to the gas-liquid linkage condenser after being cooled by the preheater and the radiator.
Further, the hot fluid in the heat exchanger is fluid which is not compatible with the expansion working medium, external heat energy enters from a hot fluid inlet arranged at the upper part of the heat exchanger and enters the heat exchanger through a water fall nozzle, a hot fluid outlet is arranged at the lower part of the heat exchanger, and a bubble device is arranged at the inner bottom of the heat exchanger.
Further, the gas-liquid linkage cylinder is composed of at least three gas-liquid linkage cylinders, is distributed annularly around the impulse turbine, and continuously completes the processes of isobaric liquid pushing shooting, isentropic exhausting and liquid filling; the middle of the gas-liquid linkage cylinder is provided with a piston, the upper part of the piston is a gaseous expansion working medium, and the lower part of the piston is a liquid working medium.
Furthermore, the impulse turbine is positioned in a sealed engine room, the gas pressure in the engine room is equal to the exhaust steam pressure in the gas-liquid linkage cylinder which does work, and the liquid working medium pump is arranged at the lower part of the engine room.
Furthermore, the gas-liquid linkage pump is a piston cylinder body, the middle part of the gas-liquid linkage pump is provided with a sliding piston, the upper part of the gas-liquid linkage pump is a liquid expansion working medium, the lower part of the gas-liquid linkage pump is a liquid working medium, and the sectional area of the gas-liquid linkage pump is smaller than that of the gas-liquid linkage cylinder.
Further, the preheater is composed of a heat pipe, liquid expansion working medium enters from the lower part of the preheater, liquid regenerative working medium enters from the upper part of a regenerative pipe, and fins are arranged on the regenerative pipe.
Further, the gas-liquid linkage condenser is composed of a heat return pipeline, a bubble device is arranged at the bottom of the heat return pipeline, and a liquid expansion working medium is used as a heat transfer working medium for the gas-liquid linkage condenser.
Further, a heat return pipeline and a heat flow pipeline separated from the heat flow outlet are arranged in the evaporator, fins are arranged on the two pipelines, the heat flow pipeline at the heat flow outlet is arranged on the upper portion of the evaporator, and the heat return pipeline is arranged on the lower portion of the evaporator.
Further, the piston group is a structure that a plurality of groups of pistons are connected in a layered and coaxial mode, the tail end of the shaft is connected with a flywheel, sealing is arranged between each two layers, and the pistons push the heat recovery working medium to operate. The operation process is that the operation process of each layer of pistons is sequentially carried out from the start of connecting a group of pistons with the gas-liquid linkage cylinder to the end of refilling the gas-liquid linkage cylinder with the liquid working medium.
The Rankine cycle type new energy engine system disclosed by the invention is reasonable in design, convenient to use, high in low-temperature heat energy utilization rate, capable of improving the power generation efficiency, reducing the loss in the mechanical friction process, greatly improving the heat energy utilization rate and suitable for popularization.
Drawings
Fig. 1 is a schematic diagram of an operation principle of a rankine cycle type new energy engine system according to the present invention.
Fig. 2 is a perspective view of a rankine cycle type new energy engine system according to the present invention.
Fig. 3 is a schematic top view of the gas-liquid linkage cylinder according to the present invention.
Fig. 4 is a schematic view showing an arrangement plan view cross-sectional structure of a gas-liquid linkage cylinder according to the present invention.
Fig. 5 is a schematic view showing a layout plan sectional structure of a preheater, a radiator and an evaporator according to the present invention.
1-Heat exchanger 1-hot fluid inlet 1-2-hot fluid outlet 2-bubble device 3-piston group 3-1-piston 3-2-flywheel 4-gas-liquid linkage condenser 5-gas-liquid linkage cylinder 6-gas-liquid linkage pump 7-generator 8-impulse turbine 8-1-cabin 9-liquid working medium pump 10-radiator 11-preheater 11-1-backheating pipeline 11-2-fin 12-evaporator.
Detailed Description
Referring now to the drawings, the following is a description, taken in conjunction with the specific embodiments: the invention relates to a Rankine cycle type new energy engine system, which comprises a heat exchanger 1, a piston group 3, a gas-liquid linkage condenser 4, a gas-liquid linkage cylinder 5, a gas-liquid linkage pump 6, a generator 7, an impulse turbine 8, a liquid working medium pump 9, a radiator 10, a preheater 11, an evaporator 12 and a plurality of control valves, and comprises an expansion working medium circulation, a liquid working medium circulation and a backheating circulation.
And (3) circulating an expansion working medium: the expansion working medium is an organic working medium, absorbs heat and evaporates in the evaporator 12 to form high-pressure gas, small bubbles are formed by the bubble device 2 arranged at the bottom of the heat exchanger 1 to directly contact with the hot fluid to absorb heat to become high-temperature high-pressure gas, and then the high-pressure gas enters the gas-liquid linkage cylinder 5 to isobarically push the liquid working medium to apply work. When only gas exists in the gas-liquid linkage cylinder 5, the piston group 3 is communicated, and the isentropic expansion pushes the piston to apply work. The organic working medium gas is discharged from the piston group 3 and enters the gas-liquid linkage condenser 4 for cooling and liquefying, the liquid expansion working medium enters the gas-liquid linkage pump 6, then the liquid expansion working medium is boosted by the gas-liquid linkage pump 6 and enters the preheater for heating 11, and then enters the evaporator 12 again, and the liquid expansion working medium absorbs heat and evaporates into the gaseous expansion working medium in the evaporator 12, so that the cycle is completed.
And (3) circulating a liquid working medium: the liquid working medium is liquid fluid which is not intended to be dissolved with the expansion working medium and has stable chemical property. The expansion working medium pushes the liquid working medium in the gas-liquid linkage cylinder 5, the liquid working medium obtains high-pressure potential energy transmitted by the expansion working medium, and the potential energy is converted into high-speed jet flow to apply work to the impulse turbine 8. The impulse turbine 8 is coaxially connected with the generator 7 and the liquid working medium pump 9, the generator 7 outputs energy to the outside, and the liquid working medium pump 9 presses the finished liquid working medium into other gas-liquid linkage cylinders 5 in a low-pressure state. When the volume of the liquid working medium in the gas-liquid linkage cylinder 5 and the volume of the gas-liquid linkage pump 6 in the shooting state are the same, the liquid working medium in the gas-liquid linkage cylinder and the pipeline has certain kinetic energy, the connection of the impulse turbine 8 is disconnected, the gas-liquid linkage pump 6 is immediately connected, and the working procedure can better utilize the 'water hammer effect' to pressurize the organic working medium in the pump. After the organic working medium is pressurized, the liquid working medium of the gas-liquid linkage pump 6 also enters the other gas-liquid linkage cylinder 5, and the circulation of the liquid working medium is completed.
And (3) backheating cycle: the backheating working medium is an organic working medium with evaporation pressure smaller than the expansion working medium. The gas-liquid linkage condenser 4 absorbs heat through evaporation, the heat is pressurized by the piston group 3, enters the evaporator 12 to liquefy and release heat, then enters the preheater 11 to release heat continuously, finally, the heat is released by the radiator 10, and the heat enters the gas-liquid linkage condenser 4 again to complete the regenerative cycle.
The invention provides three gas-liquid linkage cylinders 5 which are distributed annularly around an impulse turbine 8 and continuously finish the processes of isobaric liquid pushing shooting, isentropic air exhausting and liquid filling. The middle of the gas-liquid linkage cylinder 5 is provided with a sliding piston, the upper part of the piston is a gaseous expansion working medium, and the lower part of the piston is a liquid working medium.
The gas-liquid linkage cylinders 5 can be arranged in a group of three, and two groups of six gas-liquid linkage cylinders 5 can be arranged. The six gas-liquid linkage cylinders 5 are annularly arranged around the impact turbine 8 and the heat exchanger 1. The impulse turbine 8 can adopt a bucket turbine and is arranged vertically. The radiator 10, the preheater 11 and the evaporator 12 are arranged on the same side, and the radiator 10, the preheater 11 and the evaporator 12 are arranged in sequence from bottom to top. The piston group 3 and the gas-liquid linkage condenser 4 are arranged on the other side. The expansion working medium is an organic working medium, RS290 is taken as an example, pure water which is not intended to be dissolved with RS290 is adopted as a rigid liquid working medium, and RS600 is adopted as a regenerative working medium.
Further, the fluid which is insoluble in the expansion working medium is, for example, RS290, and the fluid which is insoluble in RS290 is water. The hot fluid is changed into high-temperature hot fluid by exchanging heat in a heat source or a heat accumulator, enters through a hot fluid inlet 1-1 positioned at the upper part of the heat exchanger 1, enters into the heat exchanger 1 through a waterfall nozzle, and then flows out through a hot fluid outlet 1-2 arranged at the lower part of the heat exchanger 1. The inner bottom of the heat exchanger 1 is provided with a bubbler 2, and the bubbler 2 is connected with an evaporator 12 through a pipeline.
The bubbler 2 is arranged at the inner bottom of the heat exchanger 1, and small particle bubbles formed by the bubbler increase the contact area and directly contact with hot fluid to perform heat exchange, so that the high-pressure expansion working medium gas is further heated and expanded to become high-temperature high-pressure gas. The heat stored in the heat accumulator is carried by the hot fluid, enters from a hot fluid inlet 1-1 at the upper part of the heat exchanger 1, is sprayed into the heat exchanger 1 through an annular nozzle to form a continuous waterfall shape, absorbs heat in the hot fluid by an expansion working medium, is defoamed through the waterfall shape, and then flows into the heat accumulator from a hot fluid outlet 1-2 at the lower part of the heat exchanger 1. In this way, the hot fluid flows downwards in the heat exchanger 1, the expansion working medium bubbles upwards, convection is formed, the residence time of the expansion working medium gas in the heat exchanger 1 is increased, and the heat exchange efficiency is improved.
The gas-liquid linkage cylinder 5 converts pressure potential energy formed after the gaseous expansion working medium absorbs heat into potential energy of liquid, and then isobarically pushes the liquid working medium to be converted into impact kinetic energy. In the process, more than three gas-liquid linkage cylinders 5 are arranged in a ring shape, one cylinder body isobarically pushes the liquid shooting impulse turbine 8 to do work outwards, and the other two cylinder bodies isentropically exhaust and reload liquid, like the process of a garlin machine gun, shooting of one gun barrel and shell throwing and loading of other gun barrels. Six gas-liquid linkage cylinders 5 can be adopted to complete the continuous processes of isobaric liquid pushing shooting, isentropic exhausting and liquid filling in actual use. The sliding piston is arranged in the gas-liquid linkage cylinder 5, and the purpose of the sliding piston is to isolate the direct contact between the expansion working medium gas at the upper part and the liquid working medium at the lower part, so as to prevent the expansion working medium gas from increasing the dissolution amount of the expansion working medium gas in the liquid working medium due to the increase of pressure.
Further, the impulse turbine 8 is located in a sealed cabin 8-1, the gas pressure in the cabin 8-1 is equal to the dead steam pressure in the gas-liquid linkage cylinder 5 which does work, and the liquid working medium pump 9 is arranged at the lower part of the cabin 8-1.
The impulse turbine 8 adopts a water turbine with a water turbine impeller running in gas, and the pressure in jet flow is equal to the gas pressure, so that the running resistance is small, and the jet flow can be converted into mechanical energy with high efficiency. The water bucket turbine is arranged in the sealed engine room 8-1, the pressure in the engine room 8-1 is equal to the exhaust pressure of the gas-liquid linkage cylinder 5 after isentropic exhaust is finished, and thus the power consumption of the liquid working medium pump 9 can be reduced. The liquid working medium pump 9 is arranged at the lower part of the engine room 8-1, so that the liquid working medium of the water turbine shot is conveniently pumped into the other gas-liquid linkage cylinder 5 in a low-pressure state.
Further, the gas-liquid linkage pump 9 is a piston cylinder, the middle part is provided with a sliding piston to separate, the upper part is a liquid expansion working medium, the lower part is a liquid working medium, and the sectional area in the cylinder is smaller than that of the gas-liquid linkage cylinder 5.
The gas-liquid linkage pump 9 is a piston cylinder body, a sliding piston is arranged in the middle of the gas-liquid linkage pump to separate the liquid expansion working medium from the liquid working medium. The upper part of the sliding piston is a liquid expansion working medium, and the lower part is a liquid working medium. When the gas-liquid linkage pump 9 is filled with the liquid expansion working medium, and the volume of the gas-liquid linkage pump 9 is the same as the volume of the gas-liquid linkage pump 9 after shooting in the gas-liquid linkage cylinder 5, the gas-liquid linkage cylinder 5 is communicated with the gas-liquid linkage pump 9, the high-pressure liquid working medium pressurizes the liquid expansion working medium in the gas-liquid linkage pump 9, and the pressurized liquid expansion working medium enters the preheater 11 through a pipeline. After the pressurization of the liquid expansion working medium in the gas-liquid linkage pump 9 is completed, the gas-liquid linkage pump 9 is connected with the gas-liquid linkage condenser 4 and the gas-liquid linkage cylinder 5 which is pumping, the liquid expansion working medium enters the gas-liquid linkage pump 9 from the gas-liquid linkage condenser 4 and extrudes the liquid working medium into the gas-liquid linkage cylinder 5 to complete the filling of the liquid expansion working medium. The above is selected to be communicated when the liquid amount in the gas-liquid linkage cylinder 5 and the volume of the gas-liquid linkage pump 9 are the same, because the liquid working medium in the gas-liquid linkage cylinder 5 has a certain kinetic energy, the expansion working medium of the gas-liquid linkage pump 9 can be better boosted, meanwhile, the sectional area of the gas-liquid linkage pump 9 is smaller than that of the gas-liquid linkage cylinder 5, the output pressure of the gas-liquid linkage pump 9 is slightly larger than that of the gas-liquid linkage cylinder 5, and the liquid expansion working medium is convenient to flow in the preheater 11 and the evaporator 12.
Further, the preheater 11 is composed of a heat recovery pipeline 11-1, a liquid expansion working medium enters from the lower part of the preheater 11, a liquid heat recovery working medium enters from the upper part of the heat recovery pipeline 11-1, and fins 11-2 are arranged on the heat recovery pipeline 11-1.
The diameter of the pipeline of the preheater 11 is large so that the low-temperature expansion working medium enters the pipeline from the lower part and runs upwards at a low speed. The liquefied and exothermic liquid regenerative working medium in the evaporator 12 enters the regenerative pipeline from the upper part of the preheater 11 and moves from top to bottom. The gaseous backheating working medium is liquefied in the evaporator 12 to release phase change heat, and the liquid backheating working medium has high temperature, and the heat is transferred to the expansion working medium through the preheater 11, so that the purpose of preheating the expansion working medium is achieved.
Further, the gas-liquid linkage condenser 4 is composed of a heat return pipeline, a bubble device is arranged at the bottom of the heat return pipeline, and the gas-liquid linkage condenser 4 uses a liquid expansion working medium as a heat transfer working medium.
The bubble device is arranged at the inner bottom of the gas-liquid linkage condenser 4, and the expansion working medium gas discharged from the piston group forms small bubbles through the bubble device, so that the specific surface area of heat exchange is increased, and the condensation efficiency is improved. The gas-liquid linkage condenser 4 uses a liquid expansion working medium as a heat exchange working medium, the heat conductivity of the liquid working medium is far higher than that of gas, for example RS290 at 30 ℃, the liquid is 91.3 mW/(m.K), the gas is 19.74 mW/(m.K), the liquid working medium heat conductivity is 4.6 times that of the gas working medium, and the heat transfer efficiency is higher. The heat return pipeline is arranged on the periphery of the inner part of the gas-liquid linkage condenser 4, and the heat return working medium is vaporized in the heat return pipeline to absorb the heat of the liquefied RS 290.
Further, a heat recovery pipeline and a heat flow pipeline separated from the heat flow outlet 1-2 are arranged in the evaporator 12, fins are arranged on the two pipelines, the heat flow pipeline of the heat flow outlet 1-2 is arranged at the upper part of the evaporator 12, and the heat recovery pipeline is arranged at the lower part of the evaporator 12.
The liquid expansion working medium absorbs heat and evaporates in the evaporator 12, and is changed into high-pressure gas from high-pressure liquid. The liquid expansion working medium enters the evaporator 12 from the lower part, the heat return pipeline is arranged at the lower part of the evaporator 12, the heat flow pipeline is arranged at the upper part of the evaporator 12, the vaporization heat absorption of the liquid expansion working medium firstly absorbs the heat released by the heat return pipeline and then absorbs the heat of the heat flow pipeline, thus the heat is firstly recovered, and then the vaporization is completed by using the heat energy in the heat accumulator so as to improve the heat energy utilization.
Furthermore, the piston group 3 is a structure that a plurality of groups of pistons 3-1 are connected in a layered and coaxial manner, the tail end of the shaft is connected with a flywheel 3-2, and a seal is arranged between each two layers. The piston 3-1 pushes the regenerative working medium to run. The operation process is that the operation process of each layer of piston group 3-1 is sequentially carried out from the beginning of connecting a group of piston groups 3-1 with the gas-liquid linkage cylinder 5 to the ending of refilling the gas-liquid linkage cylinder 5 with liquid working medium.
Furthermore, the piston group 3 is composed of a plurality of groups of pistons 3-1, and sealing rings are arranged between each group of pistons 3-1 through coaxial connection so as to prevent each group of pistons 3-1 from being mutually influenced due to connection of gas working media in different pressure states in the operation process. Each group of pistons 3 is composed of two to three pistons 3-1, and the piston groups 3 are mainly used for recovering high-temperature and high-pressure gas energy in the gas-liquid linkage cylinder 5 and discharging low-pressure gas at the upper part of the linkage cylinder when the gas-liquid linkage cylinder 5 is refilled with liquid working media. The operation process of the piston group 3: when only the gas-liquid linkage cylinder 5 of the high-temperature high-pressure gas is communicated with one group of pistons 3-1. Starting from the gas-liquid linkage cylinder 5 which is connected and is in a high-pressure state, the high-pressure gas in the linkage cylinder pushes the piston 3-1 to rotate and drives the gas compressor and other groups of pistons 3-1 to operate until the pressure in the gas-liquid linkage cylinder 5 is in a low-pressure state, and thus the energy utilization of the high-pressure gas in the linkage cylinder is completed.
The high-temperature high-pressure gas pushes the piston 3-1 to do work, and as the group of pistons 3-1 are coaxially connected with other pistons, other pistons and a piston compressor can be driven to operate. At this time, the compressor connected with the regenerative working medium does work on the regenerative working medium, the regenerative working medium gas is extracted from the gas-liquid linkage condenser 4 and compressed into the evaporator 12, and power is provided for the regenerative working medium, so that regenerative cycle is realized, and regenerative is completed. The gas-liquid linkage cylinder 5 connected in the low-pressure state is used for exhausting, so that the gas pressure difference between the gas-liquid linkage cylinder 5 and the cabin of the impulse turbine 8 is reduced, and finally the power consumption of the liquid working medium pump is reduced. In the operation process, one group of pistons 3-1 starts from the gas-liquid linkage cylinder 5 which is connected and is in a high-pressure state, and high-pressure gas in the linkage cylinder pushes the pistons to rotate to drive the gas compressor and other groups of pistons 3-1 to operate until the pressure in the gas-liquid linkage cylinder 5 is in a low-pressure state, so that the energy utilization of the high-pressure gas in the linkage cylinder is completed. The compressor connected with the regenerative working medium does work on the regenerative working medium, the regenerative working medium gas is extracted from the gas-liquid linkage condenser 4 and compressed into the evaporator 12, power is provided for the regenerative working medium, regenerative cycle is realized, and regenerative is completed. At this time, the connection is continued, the gas-liquid linkage cylinder 5 in the low pressure state is exhausted, the liquid working medium pump 9 starts to fill the linkage cylinder with liquid until the gas-liquid linkage cylinder 5 is full of liquid, the piston group 3 is disconnected and the connection of the gas-liquid linkage cylinder 5 is ended, the process from the utilization of the energy of the gas-liquid linkage cylinder 5 in the high pressure state to the new filling of the gas-liquid linkage cylinder 5 in the low pressure state is continued, the gas-liquid linkage cylinder 5 in the next high pressure state is connected, and the cycle process is repeated in sequence. In addition, in the process that the gas in the gas-liquid linkage cylinder 5 in the high-pressure state does work on the piston group 3, the pressure is continuously reduced, so that the output energy is unstable, and therefore, the flywheel 3-2 is coaxially connected in the piston group 3, and the stability of the power output of the piston group 3 is ensured.
The Rankine cycle type new energy engine system disclosed by the invention is reasonable in design, convenient to use, high in low-temperature heat energy utilization rate, capable of improving the power generation efficiency, reducing the loss in the mechanical friction process, greatly improving the heat energy utilization rate and suitable for popularization.
Claims (6)
1. The utility model provides a rankine cycle formula new forms of energy engine system, is including heat exchanger (1), piston group (3), gas-liquid linkage jar (5), gas-liquid linkage pump (6), impulse turbine (8), generator (7) and evaporimeter (12), its characterized in that: the evaporator (12) is connected with the heat exchanger (1) through a pipeline, a gaseous expansion working medium formed by evaporation is arranged in the pipeline, and the heat exchanger (1) is connected with at least three gas-liquid linkage cylinders (5) through pipelines; the gas-liquid linkage cylinder (5) is connected with the impulse turbine (8) and the gas-liquid linkage pump (6) through pipelines, and a gas expansion working medium in the gas-liquid linkage cylinder (5) pushes a liquid working medium to shoot the impulse turbine (8) to do work through a pipeline nozzle, and the liquid expansion working medium is disconnected and communicated with the gas-liquid linkage pump (6) to boost the pressure after the work is done; the gas-liquid linkage cylinder (5) is connected with the piston group (3) through a pipeline, the piston group (3) is connected with the gas-liquid linkage condenser (4) through a pipeline, the piston group (3) is communicated when only a gaseous expansion working medium exists in the gas-liquid linkage cylinder (5), the piston group (3) is pushed to do work, and exhaust steam enters the gas-liquid linkage condenser (4) to be condensed; the gas-liquid linkage condenser (4) is connected with the gas-liquid linkage pump (6) through a pipeline, the gas-liquid linkage pump (6) is connected with the preheater (11) through a pipeline, the preheater is connected with the evaporator (12) through a pipeline, the condensed liquid expansion working medium is boosted through the gas-liquid linkage pump (6), and the liquid expansion working medium enters the evaporator (12) for evaporation after being heated by the preheater (11); the impulse turbine (8) is coaxially connected with the generator (7) and the liquid working medium pump (9) so as to drive the generator (7) to generate power and the liquid working medium pump (9) to pump the liquid working medium into the other gas-liquid linkage cylinder (5) at low pressure; the piston group (3) drives a regenerative working medium to absorb heat from the gas-liquid linkage condenser (4) and liquefy and release heat in the evaporator (12), the regenerative working medium is cooled by the preheater (11) and the radiator (10) and then returns to the gas-liquid linkage condenser (4), hot fluid in the heat exchanger (1) is fluid which is not compatible with an expansion working medium, external heat energy enters from a heat flow inlet (1-1) arranged at the upper part of the heat exchanger and enters the heat exchanger (1) through a waterfall nozzle, a heat flow outlet (1-2) is arranged at the lower part of the heat exchanger (1), a bubble device (2) is arranged at the inner bottom part of the heat exchanger (1), and the gas-liquid linkage cylinder (5) is not less than three and surrounds the annular layout of the impact water turbine (8), so that the processes of isobaric pushing shooting liquid, isentropic exhausting and liquid filling are continuously completed; the device is characterized in that a piston is arranged in the middle of the gas-liquid linkage cylinder (5), the upper part of the piston is a gaseous expansion working medium, the lower part of the piston is a liquid working medium, the piston group (3) is of a structure that a plurality of groups of pistons (3-1) are connected in a layered and coaxial mode, the tail end of a shaft is connected with a flywheel (3-2), a seal is arranged between each layer, and the pistons (3-1) push a regenerative working medium to operate; the operation process is that the operation process of each layer of pistons (3-1) is sequentially carried out from the beginning of the connection of a group of pistons (3-1) with the gas-liquid linkage cylinder (5) to the ending of the refilling of the gas-liquid linkage cylinder (5) with liquid working medium.
2. The rankine cycle type new energy engine system according to claim 1, wherein: the impulse turbine (8) is positioned in a sealed engine room (8-1), the gas pressure in the engine room (8-1) is equal to the exhaust steam pressure in the gas-liquid linkage cylinder (5) which does work, and the liquid working medium pump (9) is arranged at the lower part of the engine room.
3. The rankine cycle type new energy engine system according to claim 1, wherein: the gas-liquid linkage pump (6) is a piston cylinder body, the middle part of the gas-liquid linkage pump is provided with a sliding piston, the upper part of the gas-liquid linkage pump is a liquid expansion working medium, the lower part of the gas-liquid linkage pump is a liquid working medium, and the sectional area of the gas-liquid linkage pump is smaller than that of the gas-liquid linkage cylinder (5).
4. The rankine cycle type new energy engine system according to claim 1, wherein: the preheating device is characterized in that the preheating device (11) is composed of a heat recovery pipeline (11-1), a liquid expansion working medium enters from the lower part of the preheating device (11), a liquid heat recovery working medium enters from the upper part of the heat recovery pipeline (11-1), and fins (11-2) are arranged on the heat recovery pipeline (11-1).
5. The rankine cycle type new energy engine system according to claim 1, wherein: the gas-liquid linkage condenser (4) is composed of a heat return pipeline, a bubble device (2) is arranged at the bottom of the heat return pipeline, and the gas-liquid linkage condenser (4) uses a liquid expansion working medium as a heat transfer working medium.
6. The rankine cycle type new energy engine system according to claim 1, wherein: the evaporator is characterized in that a heat return pipeline and a heat flow pipeline separated from the heat flow outlet (1-2) are arranged in the evaporator (12), fins are arranged on the two pipelines, the heat flow pipeline at the heat flow outlet (1-2) is arranged at the upper part of the evaporator (12), and the heat return pipeline is arranged at the lower part of the evaporator (12).
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