CN114320600A - Open type regenerative cycle and regenerative gas turbine device - Google Patents
Open type regenerative cycle and regenerative gas turbine device Download PDFInfo
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- CN114320600A CN114320600A CN202111487436.4A CN202111487436A CN114320600A CN 114320600 A CN114320600 A CN 114320600A CN 202111487436 A CN202111487436 A CN 202111487436A CN 114320600 A CN114320600 A CN 114320600A
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- 230000001172 regenerating effect Effects 0.000 title claims abstract description 42
- 238000002485 combustion reaction Methods 0.000 claims abstract description 32
- 239000000446 fuel Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 85
- 230000008569 process Effects 0.000 claims description 84
- 238000010521 absorption reaction Methods 0.000 claims description 13
- 238000011946 reduction process Methods 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 62
- 230000008929 regeneration Effects 0.000 description 7
- 238000011069 regeneration method Methods 0.000 description 7
- 238000007906 compression Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 3
- 230000006837 decompression Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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Abstract
The invention provides a regenerative cycle and regenerative gas flow device, belonging to the technical field of thermodynamics and thermodynamics. The outside has air passage and compressor 1 intercommunication, and compressor 1 still has air passage to communicate through regenerator 4 and combustion chamber 3, and the outside also has fuel passage and combustion chamber 3 intercommunication, and combustion chamber 3 also has gas passage and gas turbine 2 intercommunication, and gas turbine 2 also has gas passage to communicate with self through regenerator 4, and gas turbine 2 also has gas passage and outside intercommunication, and gas turbine 2 is connected compressor 1 and transmission power, forms backheating formula gas turbine device.
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 turbine device based on Brayton forward cycle, which adopts high-quality fuels such as diesel oil, heavy oil or natural gas, is an important means for realizing thermal work variation; under proper conditions, for example, the temperature of the circulating working medium flowing through the outlet of the gas turbine must be higher than the outlet temperature of the compressor, a heat return method is adopted to improve the heat efficiency; in a traditional gas turbine device, because a gas working medium obtains high-temperature heat load in a sensible heat mode, large flow is needed to improve the heat power change load of the device; the impeller type compressor is suitable for conveying large-flow working media, but requires a lower compression ratio; therefore, it is also of positive significance to adopt appropriate technical measures to reduce the compression ratio (and correspondingly the maximum operating pressure) in a gas turbine plant.
The invention provides two new open type regenerative cycles, the adoption of the regenerative technical means aims at reducing the compression ratio and is not limited by the condition that the tail end temperature of the expansion process of a cycle working medium must exceed the tail end temperature of the compression process, the regenerative amplitude selection range is large, and the rationalization of the thermal efficiency is kept; based on two open regenerative cycles, the invention provides a corresponding regenerative gas turbine device.
The invention content is as follows:
the invention mainly aims to provide an open regenerative cycle and regenerative gas turbine device, and the specific invention contents are explained in sections as follows:
1. open regenerative cycle, which means that in seven processes, namely a pressure increasing process 12, a self-circulation working medium heat absorbing process 23, a self-high temperature heat source heat absorbing process 34, a pressure reducing process 45, a heat releasing process 56 to the circulation working medium, a pressure reducing process 67 and a heat releasing process 71 to a low temperature heat source, which are sequentially carried out by a certain mass of circulation working medium, a non-closed process 1234567 formed after the heat releasing process 71 to the low temperature heat source is cancelled; wherein the exotherm for process 56 satisfies the endotherm for process 23.
2. Open regenerative cycle, which means that in seven 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 and a heat release process 71 to a low temperature heat source, which are sequentially carried out by a certain mass of circulation working medium, a non-closed process 1234567 formed after the heat release process 71 to the low temperature heat source is cancelled; wherein the exotherm for process 67 satisfies the endotherm for process 23.
3. The regenerative gas turbine device mainly comprises a compressor, a gas turbine, a combustion chamber and a regenerator; the external part of the gas turbine is provided with an air channel communicated with the compressor, the compressor is also provided with an air channel communicated with the combustion chamber through a heat regenerator, the external part of the gas turbine is also provided with a fuel channel communicated with the combustion chamber, the combustion chamber is also provided with a gas channel communicated with a gas turbine, the gas turbine is also provided with a gas channel communicated with the gas turbine through the heat regenerator, the gas turbine is also provided with a gas channel communicated with the external part, and the gas turbine is connected with the compressor and transmits power to form a regenerative gas turbine device; the situation that the output power of the gas turbine is equal to the power required by the compressor before the regenerative process is carried out is not included.
4. The regenerative gas turbine device mainly comprises a compressor, a gas turbine, a combustion chamber and a regenerator; the external part has air passageway and compressor intercommunication, and the compressor has air passageway and self intercommunication through the regenerator in addition, and the compressor also has air passageway and combustion chamber intercommunication, and the outside also has fuel passageway and combustion chamber intercommunication, and the combustion chamber also has gas channel and gas turbine intercommunication, and gas turbine also has gas passageway and outside intercommunication through the regenerator, and gas turbine connects the compressor and transmits power, forms backheating formula gas turbine device.
Description of the drawings:
fig. 1 is a schematic diagram illustrating a schematic flow of the first principle of the open regenerative cycle 1 according to the present invention.
Fig. 2 is an exemplary diagram of a 2 nd principle flow of an open regenerative cycle according to the present invention.
Fig. 3 is a schematic view of the first principle thermodynamic system of a regenerative gas turbine plant 1 provided in accordance with the present invention.
Fig. 4 is a schematic thermodynamic system diagram of the 2 nd principle of the regenerative gas turbine plant according to the present invention.
In the figure, 1 is a compressor, 2 is a gas turbine, 3 is a combustion chamber, and 4 is a regenerator.
The specific implementation mode is as follows:
it is to be noted that, in the description of the structure and the flow, the repetition is not necessary; obvious flow is not described. The invention is described in detail below with reference to the figures and examples.
The open regenerative cycle example in the T-s diagram of fig. 1 is performed as follows:
(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, a self-high temperature heat source heat absorption and temperature rise process 34, an adiabatic pressure drop and expansion process 45, a heat return and temperature reduction process 56 for releasing heat to the process 23, and an adiabatic pressure drop and expansion process 67, which are 6 processes in total.
(2) From the energy conversion perspective:
firstly, 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 56, namely heat regeneration; the heat required for the process 34 of the cycle fluid is provided by a high temperature heat source.
A heat release process, namely 56 processes of heat release of the circulating working medium, is used for meeting the heat absorption requirement of the 23 processes; the circulating working medium completes an open cycle 1234567 to take away low-temperature heat load (equivalent to releasing heat to a low-temperature heat source).
Thirdly, mechanical energy is needed in the energy conversion process, namely the boosting process 12 of the circulating working medium; the pressure reduction and expansion processes 45 and 67 of the cycle working medium release mechanical energy; the mechanical energy of expansion release is larger than the mechanical energy consumed by pressure increase, and the circulation net work is output outwards to form an open regenerative 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 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, and a heat return and temperature reduction process 67 for releasing heat to the process 23, wherein the total number of the processes is 6.
(2) From the energy conversion perspective:
firstly, 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-step process of the circulating working medium is provided by a high-temperature heat source.
Secondly, a heat release process, namely heat release of the circulation working medium in the 67 process is carried out, so that the heat absorption requirement in the 23 process is met; the circulating working medium completes an open cycle 1234567 to take away low-temperature heat load (equivalent to releasing heat to a low-temperature heat source).
Thirdly, mechanical energy is needed in the energy conversion process, namely the boosting process 12 and the boosting process 34 of the circulating working medium; the pressure reduction expansion process 56 of the cycle fluid releases mechanical energy; 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 regenerative gas turbine apparatus shown in fig. 3 is realized by:
(1) structurally, the heat recovery device mainly comprises a compressor, a gas turbine, a combustion chamber and a heat regenerator; the outside has air passage and compressor 1 intercommunication, and compressor 1 still has air passage to communicate through regenerator 4 and combustion chamber 3, and the outside also has fuel passage and combustion chamber 3 intercommunication, and combustion chamber 3 also has gas passage and gas turbine 2 intercommunication, and gas turbine 2 also has gas passage to communicate with self through regenerator 4, and gas turbine 2 also has gas passage and outside intercommunication, and gas turbine 2 connects compressor 1 and transmission power.
(2) In the flow, external air flows through the compressor 1 to be boosted and heated, flows through the heat regenerator 4 to absorb heat and be heated, and then enters the combustion chamber 3; external fuel enters the combustion chamber 3 to be mixed with air and is combusted into high-temperature gas, the gas enters the gas turbine 2 to perform decompression work to a certain degree, then flows through the heat regenerator 4 to release heat, enters the gas turbine 2 to continue decompression work and is discharged outwards; the work output by the gas turbine 2 is supplied to the compressor 1 and external power to form a regenerative gas turbine device.
The regenerative gas turbine apparatus shown in fig. 4 is realized by:
(1) structurally, the heat recovery device mainly comprises a compressor, a gas turbine, a combustion chamber and a heat regenerator; the outside has air passage and compressor 1 intercommunication, and compressor 1 still has air passage to communicate with self through regenerator 4, and compressor 1 still has air passage and combustion chamber 3 intercommunication, and the outside has fuel passage and combustion chamber 3 intercommunication in addition, and combustion chamber 3 also has gas passage and gas turbine 2 intercommunication, and gas turbine 2 also has gas passage to communicate with the outside through regenerator 4, and gas turbine 2 is connected compressor 1 and transmission power.
(2) In the flow, external air enters the compressor 1 to be boosted and heated, flows through the heat regenerator 4 to absorb heat and be heated after reaching a certain degree, enters the compressor 1 to be boosted and heated continuously, and then enters the combustion chamber 3; external fuel enters the combustion chamber 3 to be mixed with air and combusted into high-temperature fuel gas, the fuel gas flows through the gas turbine 2 to reduce pressure and do work, flows through the heat regenerator 4 to release heat, and then is discharged outwards; the work output by the gas turbine 2 is supplied to the compressor 1 and external power to form a regenerative gas turbine device.
The effect that the technology of the invention can realize-the open regenerative cycle and regenerative gas turbine device provided by the invention has the following effects and advantages:
(1) open type regenerative cycle, which accords with the thermodynamic principle; the heat regeneration mode is flexible, and the heat regeneration amplitude selection range is wide.
(2) The open type heat regeneration circulation corresponds to proper heat regeneration amplitude under different temperature differences and keeps reasonable heat efficiency.
(3) The open type regenerative 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) The open type heat regeneration circulation improves the average temperature of heat absorption, reduces the average heat release temperature and improves the heat efficiency of circulation.
(5) The heat regenerative gas turbine device improves the reasonable utilization level of energy.
(6) The regenerative gas turbine device has simple and reasonable technical measures and is beneficial to expanding the application range of the gas turbine device.
Claims (4)
1. Open regenerative cycle, which means that in seven processes, namely a pressure increasing process 12, a self-circulation working medium heat absorbing process 23, a self-high temperature heat source heat absorbing process 34, a pressure reducing process 45, a heat releasing process 56 to the circulation working medium, a pressure reducing process 67 and a heat releasing process 71 to a low temperature heat source, which are sequentially carried out by a certain mass of circulation working medium, a non-closed process 1234567 formed after the heat releasing process 71 to the low temperature heat source is cancelled; wherein the exotherm for process 56 satisfies the endotherm for process 23.
2. Open regenerative cycle, which means that in seven 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 and a heat release process 71 to a low temperature heat source, which are sequentially carried out by a certain mass of circulation working medium, a non-closed process 1234567 formed after the heat release process 71 to the low temperature heat source is cancelled; wherein the exotherm for process 67 satisfies the endotherm for process 23.
3. The regenerative gas turbine device mainly comprises a compressor, a gas turbine, a combustion chamber and a regenerator; an air channel is arranged outside and communicated with a compressor (1), the compressor (1) is also provided with an air channel which is communicated with a combustion chamber (3) through a heat regenerator (4), a fuel channel is also arranged outside and communicated with the combustion chamber (3), the combustion chamber (3) is also provided with a gas channel which is communicated with a gas turbine (2), the gas turbine (2) is also provided with a gas channel which is communicated with the gas turbine through the heat regenerator (4), the gas turbine (2) is also provided with a gas channel which is communicated with the outside, and the gas turbine (2) is connected with the compressor (1) and transmits power to form a regenerative gas turbine device; the condition that the output power of the gas turbine (2) is equal to the power required by the compressor (1) before the heat recovery process is not included.
4. The regenerative gas turbine device mainly comprises a compressor, a gas turbine, a combustion chamber and a regenerator; the external part is provided with an air channel communicated with the compressor (1), the compressor (1) is also provided with an air channel communicated with the compressor (1) through a heat regenerator (4), the compressor (1) is also provided with an air channel communicated with a combustion chamber (3), the external part is also provided with a fuel channel communicated with the combustion chamber (3), the combustion chamber (3) is also provided with a gas channel communicated with a gas turbine (2), the gas turbine (2) is also provided with a gas channel communicated with the external part through the heat regenerator (4), and the gas turbine (2) is connected with the compressor (1) and transmits power to form a regenerative gas turbine device.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020114131263 | 2020-11-27 | ||
| CN202011413126 | 2020-11-27 |
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| Publication Number | Publication Date |
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| CN114320600A true CN114320600A (en) | 2022-04-12 |
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| CN202111487436.4A Pending CN114320600A (en) | 2020-11-27 | 2021-11-26 | Open type regenerative cycle and regenerative gas turbine device |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953473A (en) * | 2015-04-13 | 2016-09-21 | 李华玉 | Bidirectional thermal cycle and second type of heat-driven compression heat pump |
| CN111238081A (en) * | 2018-08-20 | 2020-06-05 | 李华玉 | Combined cycle heat pump device |
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2021
- 2021-11-26 CN CN202111487436.4A patent/CN114320600A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953473A (en) * | 2015-04-13 | 2016-09-21 | 李华玉 | Bidirectional thermal cycle and second type of heat-driven compression heat pump |
| CN111238081A (en) * | 2018-08-20 | 2020-06-05 | 李华玉 | Combined cycle heat pump device |
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