CN115217566A - Regenerative thermal cycle and regenerative gas thermal power device - Google Patents
Regenerative thermal cycle and regenerative gas thermal power device Download PDFInfo
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- 230000001172 regenerating effect Effects 0.000 title claims abstract description 82
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- 238000010521 absorption reaction Methods 0.000 claims abstract description 23
- 238000011946 reduction process Methods 0.000 claims abstract description 16
- 239000007789 gas Substances 0.000 claims description 60
- 239000002826 coolant Substances 0.000 claims description 30
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- 238000011084 recovery Methods 0.000 description 3
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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Abstract
The invention provides a regenerative thermal cycle and regenerative gas thermal device, belonging to the technical field of thermodynamics and thermodynamics. The method is a closed process consisting of eight processes, namely a boosting process 12, a self-circulation working medium heat absorption process 23, a boosting process 34, a high-temperature heat source heat absorption process 45, a pressure reduction process 56, a heat release process 67 to the circulation working medium, a pressure reduction process 78 and a low-temperature heat source heat release process 81, which are sequentially carried out by a certain mass of circulation working medium; wherein the exotherm for process 67 satisfies the endotherm for process 23. And constructing a corresponding regenerative gas thermal power device based on regenerative thermal cycle.
Description
The technical field is as follows:
the invention belongs to the technical field of thermodynamics and thermodynamics.
Background art:
cold demand, heat demand and power demand are common in human life and production. The gas power device based on Brayton forward cycle, which takes gas as a cycle working medium, is an important means for realizing thermal work variation; the heat recovery method is adopted under proper conditions, such as that the temperature of the circulating working medium flowing through the outlet of the expansion machine is necessarily higher than that of the outlet of the compressor, or other specific conditions are provided, so that the flexibility of the heat recovery technology is lacked, and the heat efficiency is improved. However, in the conventional gas power plant, since the gas working medium obtains a high-temperature heat load in a sensible heat manner, a large flow rate is required to improve the heat-dependent power load of the plant; the impeller type compressor is suitable for conveying large-flow working media, but requires a lower compression ratio; in addition, the parameters of the cold and heat sources are various; therefore, in the gas thermal power device, it is of positive significance to adopt flexible technical means to reduce the compression ratio.
The invention provides a regenerative thermal cycle, which aims at reducing compression ratio/improving cycle thermal efficiency by adopting a regenerative technical process, is not limited by the condition that the tail end temperature of a cycle working medium in an expansion process must exceed the tail end temperature of a compression process, and is not premised on the condition that specific conditions are met; the range of the regenerative parameters is wide, and the regenerative parameters can be selected in two links of boosting and reducing simultaneously. Based on a new regenerative thermodynamic cycle, the invention provides a plurality of specific regenerative gas thermal power devices.
The invention content is as follows:
the invention mainly aims to provide a regenerative thermal cycle and regenerative gas thermal power device, and the specific contents of the invention are explained in sections as follows:
1. the regenerative thermodynamic cycle is a closed process consisting of eight processes, namely a pressure increasing process 12, a self-circulation working medium heat absorbing process 23, a pressure increasing process 34, a self-high-temperature heat source heat absorbing process 45, a pressure reducing process 56, a heat releasing process 67 to a circulation working medium, a pressure reducing process 78 and a heat releasing process 81 to a low-temperature heat source, which are sequentially performed by a certain mass of circulation working media; wherein the exotherm for process 67 satisfies the endotherm for process 23.
2. The regenerative thermodynamic cycle is a closed process consisting of eight processes, namely a pressure reduction process 12, a heat release process 23, a pressure reduction process 34, a heat release process 45 to a low-temperature heat source, a pressure boosting process 56, a self-circulation working medium heat absorption process 67, a pressure boosting process 78 and a high-temperature heat source heat absorption process 81, which are sequentially performed by a certain mass of a circulation working medium, wherein a non-closed process 12345678 formed after the high-temperature heat source heat absorption process 81 is cancelled; wherein the exotherm for process 23 satisfies the endotherm for process 67.
3. The regenerative thermodynamic cycle is a closed process formed by eight processes, namely a boosting process 12, a self-circulation working medium heat absorption process 23, a boosting process 34, a self-high-temperature heat source heat absorption process 45, a pressure reduction process 56, a heat release process 67 to a circulation working medium, a pressure reduction process 78 and a heat release process 81 to a low-temperature heat source, which are sequentially performed by a certain mass of circulation working media, wherein a non-closed process 12345678 formed after the heat release process 81 to the low-temperature heat source is cancelled; wherein the exotherm for process 67 satisfies the endotherm for process 23.
4. The regenerative gas thermal power device mainly comprises an expander, a compressor, a low-temperature heat exchanger, a high-temperature heat exchanger and a regenerator; the expander is provided with a circulating working medium channel which is communicated with the compressor through the low-temperature heat exchanger, the compressor is also provided with a circulating working medium channel which is communicated with the expander through the heat regenerator, then the compressor is also provided with a circulating working medium channel which is communicated with the expander through the high-temperature heat exchanger, and the expander is also provided with a circulating working medium channel which is communicated with the expander through the heat regenerator; the low-temperature heat exchanger is also provided with a cooling medium channel communicated with the outside, the high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, and the expander is connected with the compressor and transmits power to form the regenerative gas thermal power device.
5. The regenerative gas thermal power device mainly comprises an expander, a compressor, a low-temperature heat exchanger and a regenerator; the heat source medium channel is arranged outside and communicated with the expander, the expander is also communicated with the expander through the heat regenerator, then the expander is communicated with the compressor through the low-temperature heat exchanger, the compressor is also communicated with the compressor through the heat regenerator, and then the compressor is communicated with the outside through the heat source medium channel; the low-temperature heat exchanger is also provided with a cooling medium channel communicated with the outside, and the expander is connected with the compressor and transmits power to form the regenerative gas thermal power device.
6. The regenerative gas thermal power device mainly comprises an expander, a compressor, a high-temperature heat exchanger and a regenerator; the external part is provided with a cooling medium channel which is communicated with the compressor, the compressor is also provided with a cooling medium channel which is communicated with the compressor through a heat regenerator, then the compressor is provided with a cooling medium channel which is communicated with the expander through a high-temperature heat exchanger, and the expander is also provided with a cooling medium channel which is communicated with the expander through the heat regenerator and then the expander is provided with a cooling medium channel which is communicated with the external part; the high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, and the expander is connected with the compressor and transmits power to form the regenerative gas thermal power device.
7. The regenerative gas thermal power device mainly comprises an expander, a compressor, a regenerator and a combustion chamber; the external part has air passageway and compressor intercommunication, and the compressor has air passageway again and has air passageway and combustion chamber intercommunication after air passageway communicates with self through the regenerator in the compressor, and the outside has fuel passageway and combustion chamber intercommunication, and the combustion chamber has gas passageway and expander intercommunication in addition, and the expander has gas passageway again and has the outside to communicate after the expander also has gas passageway and self communicates through the regenerator, and the expander is connected the compressor and is transmitted power, forms backheating formula gas heat actuated device.
8. The regenerative gas thermal power device mainly comprises an expansion speed increaser, a dual-energy compressor, a low-temperature heat exchanger, a high-temperature heat exchanger and a heat regenerator; the expansion speed increaser is provided with a circulating working medium channel which is communicated with the dual-energy compressor through the low-temperature heat exchanger, the dual-energy compressor is also provided with a circulating working medium channel which is communicated with the dual-energy compressor through the heat regenerator, then the dual-energy compressor is provided with a circulating working medium channel which is communicated with the expansion speed increaser through the high-temperature heat exchanger, and the expansion speed increaser is also provided with a circulating working medium channel which is communicated with the dual-energy compressor through the heat regenerator; the low-temperature heat exchanger is also provided with a cooling medium channel communicated with the outside, the high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, and the expansion speed increaser is connected with the dual-energy compressor and transmits power to form the regenerative gas thermal power device.
9. The regenerative gas thermal power device mainly comprises an expansion speed increaser, a dual-energy compressor, a low-temperature heat exchanger and a heat regenerator; the external part is provided with a heat source medium channel which is communicated with the expansion speed increaser, the expansion speed increaser is also provided with a heat source medium channel which is communicated with the expansion speed increaser through a heat regenerator, then the expansion speed increaser is provided with a heat source medium channel which is communicated with the dual-energy compressor through a low-temperature heat exchanger, and the dual-energy compressor is provided with a heat source medium channel which is communicated with the external part after the heat source medium channel is communicated with the heat regenerator; the low-temperature heat exchanger is also provided with a cooling medium channel communicated with the outside, and the expansion speed increaser is connected with the dual-energy compressor and transmits power to form the regenerative gas thermal power device.
Description of the drawings:
fig. 1 is a schematic diagram illustrating a first principle flow of a regenerative thermodynamic cycle 1 according to the present invention.
Fig. 2 is a schematic diagram illustrating a schematic flow diagram of a 2 nd embodiment of a regenerative thermodynamic cycle according to the present invention.
Fig. 3 is a schematic diagram illustrating a schematic flow diagram of the 3 rd embodiment of the regenerative thermodynamic cycle according to the present invention.
FIG. 4 is a schematic view of the 1 st principal thermodynamic system of a regenerative gas thermal power plant according to the present invention.
FIG. 5 is a schematic thermodynamic system diagram of the 2 nd principle of the regenerative gas thermal power plant according to the present invention.
FIG. 6 is a schematic diagram of the 3 rd principle thermodynamic system of a regenerative gas thermal power plant according to the present invention.
FIG. 7 is a diagram of a 4 th principle thermodynamic system of a regenerative gas thermal power plant according to the present invention.
FIG. 8 is a diagram of the 5 th principle thermodynamic system of a regenerative gas thermal power plant according to the present invention.
FIG. 9 is a schematic diagram of the 6 th principle thermodynamic system of a regenerative gas thermal power plant according to the present invention.
In the figure, 1-an expander, 2-a compressor, 3-a low-temperature heat exchanger, 4-a high-temperature heat exchanger, 5-a heat regenerator, 6-a combustion chamber, 7-an expansion speed increaser and 8-a dual-energy compressor.
The specific implementation mode is as follows:
it should be noted that, in terms of the expression of the structure and the flow, the description is not repeated if necessary, and the obvious flow is not expressed; the following two explanations are also made:
(1) In the intermediate regenerative flow path of the expansion speed increasing machine 7 in fig. 7 and 8, the working medium may leave the pressure-reducing flow path and enter the low-temperature heat exchanger 3 at the pressure-reducing work stage, the pressure-reducing work end and the pressure-reducing speed-increasing stage thereafter, which is not limited to the related contents mentioned in the following embodiments.
(2) In the intermediate regenerative process of the dual-energy compressor 8 in fig. 7/fig. 8, the working medium can leave the boost process and enter/be discharged to the outside of the high-temperature heat exchanger 4 in the deceleration and boost stages, at the end of deceleration and boost stages and in the boost stages thereafter, and is not limited to what is mentioned in the following specific embodiments.
The example of a regenerative thermodynamic cycle in the T-s diagram of fig. 1 is performed:
(1) From the cycle process:
the cycle working medium carries out an adiabatic pressure rise and temperature rise process 12, a self-cycle working medium heat absorption and temperature rise process 23, an adiabatic pressure rise and temperature rise process 34, a high-temperature heat source heat absorption and temperature rise process 45, an adiabatic pressure reduction and expansion process 56, a heat return and temperature reduction process 67 for releasing heat to the process 23, an adiabatic pressure reduction and expansion process 78, and a low-temperature heat source heat release and temperature reduction process 81-8 processes in total.
(2) From the energy conversion perspective:
(1) the heat absorption process, namely the heat required by the cycle working medium to carry out the 23 processes, is satisfied by the heat release process of 67, namely heat regeneration; the heat required by the 45 processes of the circulating working medium is provided by a high-temperature heat source.
(2) The heat release process is that the circulating working medium releases heat in the 67 processes and is used for meeting the heat absorption requirement in the 23 processes; the circulating working medium releases heat in the 81 processes and releases the heat to a low-temperature heat source.
(3) The energy conversion process, namely the boosting process 12 and 34 of the circulating working medium, is generally completed by a compressor or a dual-energy compressor or a diffuser pipe; the decompression expansion process 56 and 78 of the cycle fluid are generally completed by an expander or an expansion speed increaser or a spray pipe; the mechanical energy of expansion release is larger than that of pressure increase consumption, and the circulation net work is output outwards to form regenerative thermodynamic cycle.
The example of a regenerative thermodynamic cycle in the T-s diagram of fig. 2 is performed as follows:
(1) From the cycle process:
the working medium is processed through an adiabatic decompression expansion process 12, a heat return temperature reduction process 23 for releasing heat to a process 67, an adiabatic decompression expansion process 34, heat release temperature reduction to a low-temperature heat source 45, an adiabatic pressure rise temperature rise process 56, a heat absorption temperature rise process 67 from the working medium, and an adiabatic pressure rise temperature rise process 78, which are 7 processes in total.
(2) From the energy conversion perspective:
(1) the heat absorption process, namely the heat required by the working medium to carry out the 67 processes, is satisfied by the heat release process of 23, namely heat regeneration; the working medium releases high-temperature heat load in the 12345678 process, namely the working medium is a high-temperature heat source.
(2) Exothermic process-the working medium performs 23 passes of heat release to meet 67 passes of endothermic demand; the working medium releases heat in the process of entering 45 and releases the heat to a low-temperature heat source.
(3) The energy conversion process, i.e. the pressure increase of the working medium 56, 78, is generally completed by a compressor or a dual-energy compressor or a diffuser pipe; the working medium decompression and expansion processes 12 and 34 are generally completed by an expander or an expansion speed increaser or a spray pipe; the mechanical energy released by expansion is greater than the mechanical energy consumed by boosting, and the circulating net work is output outwards to form regenerative thermodynamic cycle.
The example of a regenerative thermodynamic cycle in the T-s diagram of fig. 3 is performed as follows:
(1) From the cycle process:
the working medium is processed by an adiabatic pressure rise and temperature rise process 12, a heat absorption and temperature rise process 23 from the working medium, an adiabatic pressure rise and temperature rise process 34, a heat absorption and temperature rise process 45 from a high-temperature heat source, an adiabatic pressure reduction and expansion process 56, a heat return and temperature reduction process 67 for releasing heat to the process 23, and an adiabatic pressure reduction and expansion process 78, which are 7 processes in total.
(2) From the energy conversion perspective:
(1) the heat absorption process, namely the heat required by the working medium to carry out the 23 processes, is satisfied by the heat release process of 67, namely heat regeneration; the heat required for the working medium to perform 45 processes is provided by a high temperature heat source.
(2) Exothermic process — the working medium performs 67 process exotherms for meeting the 23 process endothermic demand; the working medium is subjected to 12345678 to obtain a low-temperature thermal load, i.e., the working medium itself is a low-temperature heat source.
(3) The energy conversion process, i.e. the pressure boosting process 12, 34 of the working medium, is generally completed by a compressor or a dual-energy compressor or a diffuser pipe; the working medium is decompressed and expanded through 56, 78, and is generally completed by an expander or an expansion speed increaser or a spray pipe; the mechanical energy of expansion release is larger than that of pressure increase consumption, and the circulation net work is output outwards to form regenerative thermodynamic cycle.
The regenerative gas thermal power plant shown in fig. 4 is realized by:
(1) Structurally, the heat exchanger mainly comprises an expander, a compressor, a low-temperature heat exchanger, a high-temperature heat exchanger and a heat regenerator; the expander 1 is provided with a circulating working medium channel which is communicated with the compressor 2 through the low-temperature heat exchanger 3, the compressor 2 is also provided with a circulating working medium channel which is communicated with the expander 2 through the heat regenerator 5, then the circulating working medium channel of the compressor 2 is communicated with the expander 1 through the high-temperature heat exchanger 4, and the expander 1 is also provided with a circulating working medium channel which is communicated with the expander 1 through the heat regenerator 5; the low temperature heat exchanger 3 is also communicated with the outside through a cooling medium channel, the high temperature heat exchanger 4 is also communicated with the outside through a heat source medium channel, and the expander 1 is connected with the compressor 2 and transmits power.
(2) In the flow, the circulating working medium discharged by the expander 1 releases heat and cools through the low-temperature heat exchanger 3, enters the compressor 2 to be boosted and heated to a certain degree, then flows through the heat regenerator 5 to absorb heat and be heated, and then enters the compressor 2 to be boosted and heated continuously; the circulating working medium discharged by the compressor 2 flows through the high-temperature heat exchanger 4 to absorb heat and raise temperature, enters the expander 1 to reduce pressure and do work to a certain degree, then flows through the heat regenerator 5 to release heat and lower temperature, and then enters the expander 2 to continue reducing pressure and do work; the cooling medium takes away low-temperature heat load through the low-temperature heat exchanger 3, the heat source medium provides high-temperature heat load through the high-temperature heat exchanger 4, and the work output by the expander 1 is provided for the compressor 2 and the external acting power, so that the regenerative gas thermal power device is formed.
The regenerative gas thermal power plant shown in fig. 5 is realized by:
(1) Structurally, the heat exchanger mainly comprises an expander, a compressor, a low-temperature heat exchanger and a heat regenerator; the external part is provided with a heat source medium channel which is communicated with the expander 1, the expander 1 is also provided with a heat source medium channel which is communicated with the expander 1 through the heat regenerator 5, then the expander 1 is provided with a heat source medium channel which is communicated with the compressor 2 through the low-temperature heat exchanger 3, the compressor 2 is also provided with a heat source medium channel which is communicated with the expander 2 through the heat regenerator 5, and then the compressor 2 is provided with a heat source medium channel which is communicated with the external part; the low temperature heat exchanger 3 is also communicated with the outside through a cooling medium channel, and the expander 1 is connected with the compressor 2 and transmits power.
(2) In the flow, an external heat source medium enters the expansion machine 1 to reduce the pressure and do work to a certain degree, then flows through the heat regenerator 5 to release heat and reduce the temperature, and then enters the expansion machine 1 to continue reducing the pressure and doing work; a heat source medium discharged by the expander 1 passes through the low-temperature heat exchanger 3 to release heat and reduce temperature, enters the compressor 2 to be boosted and heated to a certain degree, then passes through the heat regenerator 5 to absorb heat and be heated, and then enters the compressor 2 to be continuously boosted and heated and discharged outwards; the cooling medium takes away low-temperature heat load through the low-temperature heat exchanger 3, the heat source medium provides high-temperature heat load through the inlet and outlet flow, the work output by the expander 1 is provided for the compressor 2 and the external acting force, and the regenerative gas thermal power device is formed.
The regenerative gas thermal power plant shown in fig. 6 is realized by:
(1) Structurally, the heat exchanger mainly comprises an expander, a compressor, a high-temperature heat exchanger and a heat regenerator; a cooling medium channel is arranged outside and communicated with the compressor 2, the compressor 2 is also communicated with the compressor 2 through a heat regenerator 5, then the compressor 2 is communicated with the expander 1 through a high-temperature heat exchanger 4, and the expander 1 is also communicated with the expander 1 through the heat regenerator 5 and then is communicated with the expander 1 through a cooling medium channel; the high-temperature heat exchanger 4 is also communicated with the outside through a heat source medium channel, and the expander 1 is connected with the compressor 2 and transmits power.
(2) In the flow, external cooling medium enters the compressor 2 to be boosted and heated to a certain degree, then flows through the heat regenerator 5 to absorb heat and be heated, and then enters the compressor 2 to be boosted and heated continuously; the cooling medium discharged by the compressor 2 flows through the high-temperature heat exchanger 4 to absorb heat and raise temperature, enters the expander 1 to reduce pressure and do work to a certain degree, then flows through the heat regenerator 5 to release heat and lower temperature, and then enters the expander 1 to continue reducing pressure and do work and is discharged outwards; the heat source medium provides high-temperature heat load through the high-temperature heat exchanger 4, the cooling medium brings low-temperature heat load through the inlet and outlet process, the work output by the expander 1 is provided for the compressor 2 and the external acting force, and the regenerative gas thermal power device is formed.
The regenerative gas turbine device shown in fig. 7 is realized by:
(1) Structurally, the heat recovery device mainly comprises an expander, a compressor, a heat regenerator and a combustion chamber; the outside has air passage and compressor 2 to communicate, and compressor 2 still has air passage and self to communicate after compressor 2 has air passage and combustion chamber 6 to communicate again through regenerator 5, and the outside has fuel passage and combustion chamber 6 to communicate, and combustion chamber 6 has gas passage and expander 1 to communicate in addition, and expander 1 has gas passage and self to communicate after expander 1 has gas passage again to communicate with the outside through regenerator 5, and expander 1 is connected compressor 2 and transmission power.
(2) In the flow, external air enters the compressor 2 to be boosted and heated to a certain degree, then flows through the heat regenerator 5 to absorb heat and be heated, and then enters the compressor 2 to be boosted and heated continuously; the air discharged by the compressor 2 enters the combustion chamber 6, the external fuel enters the combustion chamber 6 to be mixed with the air and is combusted into high-temperature fuel gas, the fuel gas enters the expander 1 to reduce the pressure and do work to a certain degree, then flows through the heat regenerator 5 to release heat and reduce the temperature, and then enters the expander 1 to continue reducing the pressure and do work and discharge the fuel gas to the outside; the work output by the expander 1 is provided to the compressor 2 and external power to form a regenerative gas turbine unit.
The regenerative gas thermal power plant shown in fig. 8 is realized by:
(1) Structurally, the system mainly comprises an expansion speed increaser, a dual-energy compressor, a low-temperature heat exchanger, a high-temperature heat exchanger and a heat regenerator; the expansion speed increaser 7 is provided with a circulating working medium channel which is communicated with the dual-energy compressor 8 through the low-temperature heat exchanger 3, the dual-energy compressor 8 is also provided with a circulating working medium channel which is communicated with the dual-energy compressor 8 through the heat regenerator 5, then the dual-energy compressor 8 is provided with a circulating working medium channel which is communicated with the expansion speed increaser 7 through the high-temperature heat exchanger 4, and the expansion speed increaser 7 is also provided with a circulating working medium channel which is communicated with the dual-energy compressor through the heat regenerator 5; the low-temperature heat exchanger 3 is also provided with a cooling medium channel communicated with the outside, the high-temperature heat exchanger 4 is also provided with a heat source medium channel communicated with the outside, and the expansion speed increaser 7 is connected with the dual-energy compressor 8 and transmits power.
(2) In the process, the circulating working medium discharged by the expansion speed increaser 7 flows through the low-temperature heat exchanger 3 to release heat and reduce temperature, enters the dual-energy compressor 8 to be boosted and heated, is decelerated to a certain degree, then flows through the heat regenerator 5 to absorb heat and be heated, and then enters the dual-energy compressor 8 to be continuously boosted and heated; the circulating working medium discharged by the dual-energy compressor 8 flows through the high-temperature heat exchanger 4 to absorb heat and raise temperature, enters the expansion speed increaser 7 to reduce pressure and do work to a certain degree, then flows through the heat regenerator 5 to release heat and lower temperature, and then enters the expansion machine 2 to continue reducing pressure, doing work and increasing speed; the cooling medium takes away low-temperature heat load through the low-temperature heat exchanger 3, the heat source medium provides high-temperature heat load through the high-temperature heat exchanger 4, and the work output by the expansion speed increaser 7 is provided for the dual-energy compressor 8 and an external power as well as forms a regenerative gas thermal power device.
The regenerative gas thermal power plant shown in fig. 9 is realized by:
(1) Structurally, the system mainly comprises an expansion speed increaser, a dual-energy compressor, a low-temperature heat exchanger and a heat regenerator; the external part is provided with a heat source medium channel which is communicated with the expansion speed increasing machine 7, the expansion speed increasing machine 7 is further provided with a heat source medium channel which is communicated with the expansion speed increasing machine 7 through the heat regenerator 5, then the expansion speed increasing machine 7 is further provided with a heat source medium channel which is communicated with the dual-energy compressor 8 through the low-temperature heat exchanger 3, the dual-energy compressor 8 is further provided with a heat source medium channel which is communicated with the external part after the dual-energy compressor 8 is further provided with a heat source medium channel which is communicated with the heat regenerator 5; the low-temperature heat exchanger 3 is also provided with a cooling medium channel communicated with the outside, and the expansion speed increaser 7 is connected with the dual-energy compressor 8 and transmits power.
(2) In the flow, an external heat source medium enters the expansion speed increasing machine 7 to reduce the pressure and do work to a certain degree, then flows through the heat regenerator 5 to release heat and reduce the temperature, and then enters the expansion speed increasing machine 7 to continuously reduce the pressure, do work and increase the speed; the heat source medium discharged by the expansion speed increaser 7 releases heat and cools through the low-temperature heat exchanger 3, enters the dual-energy compressor 8 to be boosted, heated and cooled to a certain degree, then flows through the heat regenerator 5 to absorb heat and heated, and then enters the dual-energy compressor 8 to be continuously boosted, heated and discharged; the cooling medium takes away low-temperature heat load through the low-temperature heat exchanger 3, the heat source medium provides high-temperature heat load through the inlet and outlet flow, the work output by the expansion speed increaser 7 is provided for the dual-energy compressor 8 and the external acting power, and the regenerative gas thermal power device is formed.
The effect that the technology of the invention can realize-the regenerative thermodynamic cycle and regenerative gas thermodynamic device provided by the invention has the following effects and advantages:
(1) The regenerative thermodynamic cycle conforms to the thermodynamic principle; the degree of freedom of the regenerative parameters is large, the regenerative parameter selection can be simultaneously carried out in two links of pressure increasing and pressure reducing, and the selectable ranges of the regenerative pressure and the regenerative temperature are wide.
(2) The regenerative thermal cycle has corresponding and suitable regenerative amplitude under different heat source temperature differences, and keeps reasonable thermal efficiency.
(3) The regenerative thermal cycle effectively reduces the cycle compression ratio and provides a basic working principle for improving the flow of the cycle working medium and selecting a large-flow compressor.
(4) A regenerative gas thermal power device provides various technical schemes and realizes reasonable utilization of energy.
(5) The heat return type gas thermal power device has simple and reasonable technical measures and is beneficial to expanding the application range of the gas thermal power device.
Claims (9)
1. The regenerative thermodynamic cycle is a closed process consisting of eight processes, namely a boosting process 12, a self-circulation working medium heat absorption process 23, a boosting process 34, a self-high-temperature heat source heat absorption process 45, a pressure reduction process 56, a heat release process 67 to a circulation working medium, a pressure reduction process 78 and a heat release process 81 to a low-temperature heat source, which are sequentially performed by a certain mass of circulation working media; wherein the exotherm for process 67 satisfies the endotherm for process 23.
2. The regenerative thermodynamic cycle is a closed process consisting of eight processes, namely a pressure reduction process 12, a heat release process 23, a pressure reduction process 34, a heat release process 45 to a low-temperature heat source, a pressure boosting process 56, a self-circulation working medium heat absorption process 67, a pressure boosting process 78 and a high-temperature heat source heat absorption process 81, which are sequentially performed by a certain mass of a circulation working medium, wherein a non-closed process 12345678 formed after the high-temperature heat source heat absorption process 81 is cancelled; wherein the exotherm for process 23 satisfies the endotherm for process 67.
3. The regenerative thermodynamic cycle is a closed process formed by eight processes, namely a boosting process 12, a self-circulation working medium heat absorption process 23, a boosting process 34, a self-high-temperature heat source heat absorption process 45, a pressure reduction process 56, a heat release process 67 to a circulation working medium, a pressure reduction process 78 and a heat release process 81 to a low-temperature heat source, which are sequentially performed by a certain mass of circulation working media, wherein a non-closed process 12345678 formed after the heat release process 81 to the low-temperature heat source is cancelled; wherein the exotherm for process 67 satisfies the endotherm for process 23.
4. The regenerative gas thermal power device mainly comprises an expander, a compressor, a low-temperature heat exchanger, a high-temperature heat exchanger and a regenerator; the expander (1) is provided with a circulating working medium channel which is communicated with the compressor (2) through the low-temperature heat exchanger (3), the compressor (2) is also provided with a circulating working medium channel which is communicated with the expander (1) through the heat regenerator (5), then the compressor (2) is provided with a circulating working medium channel which is communicated with the expander through the high-temperature heat exchanger (4), and the expander (1) is also provided with a circulating working medium channel which is communicated with the expander through the heat regenerator (5); the low-temperature heat exchanger (3) is also provided with a cooling medium channel communicated with the outside, the high-temperature heat exchanger (4) is also provided with a heat source medium channel communicated with the outside, and the expander (1) is connected with the compressor (2) and transmits power to form the regenerative gas thermal power device.
5. The regenerative gas thermal power device mainly comprises an expander, a compressor, a low-temperature heat exchanger and a regenerator; the external part is provided with a heat source medium channel which is communicated with the expander (1), the expander (1) is also provided with a heat source medium channel which is communicated with the expander through the heat regenerator (5), then the expander (1) is also provided with a heat source medium channel which is communicated with the compressor (2) through the low-temperature heat exchanger (3), and the compressor (2) is also provided with a heat source medium channel which is communicated with the compressor through the heat regenerator (5) and then the compressor (2) is provided with a heat source medium channel which is communicated with the external part; the low-temperature heat exchanger (3) is also provided with a cooling medium channel communicated with the outside, and the expander (1) is connected with the compressor (2) and transmits power to form the regenerative gas thermal power device.
6. The regenerative gas thermal power device mainly comprises an expander, a compressor, a high-temperature heat exchanger and a regenerator; the external part is provided with a cooling medium channel which is communicated with the compressor (2), the compressor (2) is further provided with a cooling medium channel which is communicated with the compressor (2) through the heat regenerator (5), then the compressor (2) is communicated with the expander (1) through the high-temperature heat exchanger (4), the expander (1) is further provided with a cooling medium channel which is communicated with the expander (1) through the heat regenerator (5), and then the expander (1) is further provided with a cooling medium channel which is communicated with the external part; the high-temperature heat exchanger (4) is also provided with a heat source medium channel communicated with the outside, and the expander (1) is connected with the compressor (2) and transmits power to form the regenerative gas thermal power device.
7. The regenerative gas thermal power device mainly comprises an expander, a compressor, a regenerator and a combustion chamber; an air channel is arranged outside and communicated with the compressor (2), the compressor (2) is further provided with an air channel communicated with the compressor (2) through the heat regenerator (5), then the compressor (2) is further provided with an air channel communicated with the combustion chamber (6), a fuel channel is arranged outside and communicated with the combustion chamber (6), the combustion chamber (6) is further provided with a fuel gas channel communicated with the expander (1), the expander (1) is further provided with a fuel gas channel communicated with the outside after the fuel gas channel is communicated with the heat regenerator (5), and the expander (1) is connected with the compressor (2) and transmits power to form the regenerative gas heat power device.
8. The regenerative gas thermal power device mainly comprises an expansion speed increaser, a dual-energy compressor, a low-temperature heat exchanger, a high-temperature heat exchanger and a heat regenerator; the expansion speed-increasing machine (7) is provided with a circulating working medium channel which is communicated with the dual-energy compressor (8) through the low-temperature heat exchanger (3), the dual-energy compressor (8) is also provided with a circulating working medium channel which is communicated with the dual-energy compressor (8) through the heat regenerator (5), then the dual-energy compressor (8) is also provided with a circulating working medium channel which is communicated with the expansion speed-increasing machine (7) through the high-temperature heat exchanger (4), and the expansion speed-increasing machine (7) is also provided with a circulating working medium channel which is communicated with the dual-energy compressor through the heat regenerator (5); the low-temperature heat exchanger (3) is also provided with a cooling medium channel communicated with the outside, the high-temperature heat exchanger (4) is also provided with a heat source medium channel communicated with the outside, and the expansion speed increaser (7) is connected with the dual-energy compressor (8) and transmits power to form the regenerative gas thermal power device.
9. The regenerative gas thermal power device mainly comprises an expansion speed increaser, a dual-energy compressor, a low-temperature heat exchanger and a heat regenerator; the external part is provided with a heat source medium channel which is communicated with an expansion speed increaser (7), the expansion speed increaser (7) is also provided with a heat source medium channel which is communicated with the expansion speed increaser (7) through a heat regenerator (5), then the expansion speed increaser (7) is provided with a heat source medium channel which is communicated with a dual-energy compressor (8) through a low-temperature heat exchanger (3), the dual-energy compressor (8) is also provided with a heat source medium channel which is communicated with the dual-energy compressor (8) through the heat regenerator (5), and then the dual-energy compressor (8) is provided with a heat source medium channel which is communicated with the external part; the low-temperature heat exchanger (3) is also provided with a cooling medium channel communicated with the outside, and the expansion speed increaser (7) is connected with the dual-energy compressor (8) and transmits power to form a regenerative gas thermal power device.
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