Cyclic power generation system

Abstract

The utility model relates to a cyclic power generation system. The circulating power generation system comprises a first combustion chamber, a first turbine, a second combustion chamber, a second turbine, a condenser, a first pump, a plurality of first heat regenerators and a plurality of second heat regenerators. An air outlet of the first combustion chamber communicates with an air inlet of the first turbine, and an air outlet of the first turbine communicates with an air inlet of the second combustion chamber. The second turbine can receive gas flowing out of a gas outlet of the second combustion chamber, and a gas outlet of the second turbine communicates with a gas inlet of the condenser. A water outlet of the condenser sequentially communicates with the liquid inlet ends of the first heat exchange channels of the multiple first heat regenerators through a first pump. The third heat exchange channels of the multiple second heat regenerators sequentially communicate with the air inlet of the first combustion chamber and are used for receiving liquid flowing out of the first heat exchange channels of the multiple first heat regenerators. And heat generated by hydrogen combustion can be efficiently utilized.

Description

Technical Field

[0001] This application relates to the field of hydrogen energy utilization technology, and in particular to a cycle power generation system. Background Technology

[0002] In the field of hydrogen energy utilization based on heat-work conversion, hydrogen internal combustion engines are commonly used. However, hydrogen internal combustion engines have relatively low efficiency. Utility Model Content

[0003] Therefore, it is necessary to provide a circulating power generation system that can efficiently utilize the heat generated by hydrogen combustion to address the above technical problems.

[0004] This application provides a cyclic power generation system, including:

[0005] The first combustion chamber has an air inlet and an air outlet, and the air inlet of the first combustion chamber is used to connect to a first oxygen source and a first hydrogen source respectively.

[0006] The first turbine has an air inlet, an air extraction outlet, and an air outlet; the air outlet of the first combustion chamber is connected to the air inlet of the first turbine.

[0007] The second combustion chamber has an air inlet and an air outlet, and the air outlet of the first turbine is connected to the air inlet of the second combustion chamber; the air inlet of the second combustion chamber is used to connect to a second oxygen source and a second hydrogen source respectively.

[0008] The second turbine has an air inlet, an air outlet, and an air outlet; the second turbine is capable of receiving gas flowing out from the air outlet of the second combustion chamber;

[0009] The condenser has an air inlet and a water outlet, and the air outlet of the second turbine is connected to the air inlet of the condenser.

[0010] A first pump and a plurality of first regenerators, each first regenerator having a first heat exchange channel and a second heat exchange channel for exchanging heat with the first heat exchange channel; the outlet of the condenser is sequentially connected to the liquid inlet of the first heat exchange channel of the plurality of first regenerators via the first pump; the second heat exchange channels of the plurality of first regenerators are all connected to the exhaust port of the second turbine; in two adjacent first regenerators, the exhaust port of the second heat exchange channel of one first regenerator is connected to the exhaust port of the second heat exchange channel of the other first regenerator; and

[0011] Multiple second regenerators each have a third heat exchange channel and a fourth heat exchange channel for exchanging heat with the third heat exchange channel; the third heat exchange channel of the multiple second regenerators is sequentially connected to the air inlet of the first combustion chamber and is used to receive liquid flowing out from the first heat exchange channel of the multiple first regenerators; the fourth heat exchange channel of the multiple second regenerators is connected to the air outlet or air extraction port of the first turbine; in two adjacent second regenerators, the air outlet end of the fourth heat exchange channel of one second regenerator is connected to the air inlet end of the fourth heat exchange channel of the other second regenerator.

[0012] In one embodiment, the cycle power generation system further includes:

[0013] A deaerator has an inlet and an outlet, wherein the inlet of the deaerator is sequentially connected to the outlet end of the first heat exchange channel of a plurality of first regenerators; and

[0014] The second pump supplies liquid flowing out of the deaerator to the third heat exchange channel of the plurality of second regenerators via the second pump;

[0015] In one embodiment, the circulating power generation system further includes:

[0016] A third turbine has an air inlet, an air extraction outlet, and an air outlet. The air inlet of the third turbine is connected to the air outlet of the second combustion chamber, and the air outlet of the third turbine is connected to the air inlet of the second turbine.

[0017] The third regenerator has a fifth heat exchange channel and a sixth heat exchange channel for exchanging heat with the fifth heat exchange channel; the liquid inlet of the fifth heat exchange channel of the third regenerator is connected to the liquid outlet of the second pump, and the liquid outlet of the fifth heat exchange channel of the third regenerator is connected to the third heat exchange channel of an adjacent second regenerator; the sixth heat exchange channel of the third regenerator is connected to the exhaust port of the third turbine.

[0018] In one embodiment, the circulating power generation system further includes a steam turbine connected to the second pump, the steam turbine having an air inlet;

[0019] The outlet of the third turbine is connected to the inlet of the steam turbine, so as to drive the second pump by means of the steam turbine.

[0020] In one embodiment, the number of the first regenerators is at least three.

[0021] In one embodiment, the number of the second regenerators is at least two.

[0022] In one embodiment, the circulating power generation system further includes a fourth regenerator and a fifth regenerator located further away from the first combustion chamber than the fourth regenerator;

[0023] The fourth regenerator has a seventh heat exchange channel and an eighth heat exchange channel for exchanging heat with the seventh heat exchange channel.

[0024] The fifth regenerator has a ninth heat exchange channel and a tenth heat exchange channel for exchanging heat with the ninth heat exchange channel.

[0025] The seventh heat exchange channel of the fourth regenerator and the ninth heat exchange channel of the fifth regenerator are connected between the air inlet of the first combustion chamber and the third heat exchange channel of the second regenerator.

[0026] The eighth heat exchange channel of the fourth regenerator and the tenth heat exchange channel of the fifth regenerator are both connected to the exhaust port of the first turbine.

[0027] In one embodiment, the circulating power generation system further includes a sixth regenerator, a seventh regenerator, and a first compressor;

[0028] The sixth regenerator has an eleventh heat exchange channel and a twelfth heat exchange channel for exchanging heat with the eleventh heat exchange channel.

[0029] The seventh regenerator has a thirteenth heat exchange channel and a fourteenth heat exchange channel for exchanging heat with the thirteenth heat exchange channel.

[0030] The eleventh heat exchange channel of the sixth regenerator and the thirteenth heat exchange channel of the seventh regenerator are connected in sequence, and are connected between the ninth heat exchange channel of the fifth regenerator and the third heat exchange channel of the adjacent second regenerator;

[0031] The outlet end of the tenth heat exchange channel of the fifth regenerator is connected to the inlet end of the twelfth heat exchange channel of the sixth regenerator. The outlet end of the twelfth heat exchange channel of the sixth regenerator is connected to the inlet end of the first compressor. The outlet end of the first compressor and the outlet end of the eleventh heat exchange channel of the sixth regenerator are connected in parallel to the ninth heat exchange channel of the fifth regenerator.

[0032] In one embodiment, the circulating power generation system further includes a second compressor;

[0033] The outlet of the twelfth heat exchange channel of the sixth regenerator is also connected to the inlet of the fourteenth heat exchange channel of the seventh regenerator. The outlet of the fourteenth heat exchange channel of the seventh regenerator is connected to the inlet of the second compressor. The outlet of the second compressor and the outlet of the thirteenth heat exchange channel of the seventh regenerator are connected in parallel to the eleventh heat exchange channel of the sixth regenerator.

[0034] In one embodiment, the circulating power generation system further includes an eighth regenerator;

[0035] The eighth regenerator has a fifteenth heat exchange channel and a sixteenth heat exchange channel for exchanging heat with the fifteenth heat exchange channel.

[0036] The fifteenth heat exchange channel of the eighth regenerator is connected between the air outlet of the first turbine and the air inlet of the second combustion chamber.

[0037] The outlet end of the eighth heat exchange channel of the fourth regenerator is connected to the inlet end of the sixteenth heat exchange channel of the eighth regenerator, and the outlet end of the sixteenth heat exchange channel of the eighth regenerator is connected to the inlet end of the second compressor.

[0038] In the technical solution of this application, the water condensed by the condenser can be sequentially pumped by a first pump to the first heat exchange channels of multiple first regenerators. During this process, the high-temperature steam flowing out of the exhaust port of the second turbine can flow into the second heat exchange channels of multiple first regenerators respectively, and the high-temperature steam flowing out of the exhaust port of the second turbine can be used to heat the water flowing through the first heat exchange channel of each first regenerator. The water flowing through the first heat exchange channels of multiple first regenerators can sequentially flow to the third heat exchange channels of multiple second regenerators. During this process, the high-temperature steam flowing out of the exhaust port or exhaust port of the first turbine can heat the water flowing through the first heat exchange channel of each first regenerator. Steam can flow into the fourth heat exchange channel of the second regenerator. The high-temperature steam flowing out of the outlet or exhaust port of the first turbine can heat the water flowing through the third heat exchange channel of each second regenerator. This allows the water flowing into the third heat exchange channel of the first second regenerator to be heated and vaporized after passing through multiple second regenerators. Since the third heat exchange channels of multiple second regenerators are sequentially connected to the inlet of the first combustion chamber, the inlet temperature of the first combustion chamber can be increased, thereby increasing the temperature of hydrogen and oxygen flowing into the first combustion chamber, thus improving the combustion efficiency of the first combustion chamber and achieving efficient utilization of the heat generated by hydrogen combustion. Attached Figure Description

[0039] Figure 1 A schematic diagram of the structure of a circulating power generation system according to an embodiment of this application is shown.

[0040] Figure 2 A schematic diagram of the structure of a circulating power generation system according to another embodiment of this application is shown.

[0041] Figure 3 A schematic diagram of the structure of a first turbine and a first generator in one embodiment of this application is shown.

[0042] Reference numerals: 10. Cyclic power generation system; 101. First combustion chamber; 102. First turbine; 103. Second combustion chamber; 104. Second turbine; 105. Condenser; 106. First pump; 107. Third turbine; 200. First regenerator; 300. Second regenerator; 410. Deaerator; 420. Second pump; 430. Steam turbine; 500. Third regenerator; 610. Fourth regenerator; 620. Fifth regenerator; 630. Sixth regenerator; 640. Seventh regenerator; 650. First compressor; 660. Second compressor ; 670, Eighth Regenerator; 710, First Generator; H1, First Heat Exchange Channel; H2, Second Heat Exchange Channel; H3, Third Heat Exchange Channel; H4, Fourth Heat Exchange Channel; H5, Fifth Heat Exchange Channel; H6, Sixth Heat Exchange Channel; H7, Seventh Heat Exchange Channel; H8, Eighth Heat Exchange Channel; H9, Ninth Heat Exchange Channel; H10, Tenth Heat Exchange Channel; H11, Eleventh Heat Exchange Channel; H12, Twelfth Heat Exchange Channel; H13, Thirteenth Heat Exchange Channel; H14, Fourteenth Heat Exchange Channel; H15, Fifteenth Heat Exchange Channel; H16, Sixteenth Heat Exchange Channel. Detailed Implementation

[0043] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0044] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0045] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0047] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0048] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0049] Figure 1 A schematic diagram of the structure of a circulating power generation system according to an embodiment of this application is shown. Figure 2 A schematic diagram of the structure of a circulating power generation system according to another embodiment of this application is shown.

[0050] Please see Figure 1 and Figure 2One embodiment of this application provides a circulating power generation system 10, including a first combustion chamber 101, a first turbine 102, a second combustion chamber 103, a second turbine 104, a condenser 105, a first pump 106, a plurality of first regenerators 200 and a plurality of second regenerators 300.

[0051] The first combustion chamber 101 has an air inlet and an air outlet. The air inlet of the first combustion chamber 101 is used to connect to a first oxygen source and a first hydrogen source respectively, so that oxygen and hydrogen can be supplied to the first combustion chamber 101 respectively by means of the first oxygen source and the first hydrogen source.

[0052] The first turbine 102 has an air inlet, an air outlet, and an air outlet. The air outlet of the first combustion chamber 101 is connected to the air inlet of the first turbine 102. The second combustion chamber 103 has an air inlet and an air outlet. The air outlet of the first turbine 102 is connected to the air inlet of the second combustion chamber 103. The air inlet of the second combustion chamber 103 is used to connect to a second oxygen source and a second hydrogen source respectively, so that oxygen and hydrogen can be supplied to the first combustion chamber 101 respectively by means of the second oxygen source and the second hydrogen source.

[0053] The second turbine 104 has an air inlet, an air outlet, and an air outlet. The second turbine 104 is able to receive gas flowing out from the air outlet of the second combustion chamber 103. The condenser 105 has an air inlet and a water outlet. The air outlet of the second turbine 104 is connected to the air inlet of the condenser 105.

[0054] Oxygen and hydrogen entering the first combustion chamber 101 are burned in the first combustion chamber 101. The high-temperature steam produced by combustion first enters the first turbine 102 and expands and does work in the first turbine 102. Then it enters the second combustion chamber 103. The oxygen and hydrogen entering the second combustion chamber 103 are burned in the second combustion chamber 103 and also produce high-temperature water vapor. This part of high-temperature water vapor, together with the gas flowing into the second combustion chamber 103 from the first turbine 102, enters the second turbine 104 and expands and does work in the second turbine 104. After completing the expansion and work, the high-temperature water vapor enters the condenser 105 and is condensed into water by the condenser 105.

[0055] The first regenerator 200 has a first heat exchange channel H1 and a second heat exchange channel H2 for exchanging heat with the first heat exchange channel H1. The outlet of the condenser 105 is connected to the liquid inlet of the first heat exchange channel H1 of the multiple first regenerators 200 in sequence through the first pump 106. The second heat exchange channels H2 of the multiple first regenerators 200 are all connected to the exhaust port of the second turbine 104. In two adjacent first regenerators 200, the exhaust port of the second heat exchange channel H2 of one first regenerator 200 is connected to the exhaust port of the second heat exchange channel H2 of the other first regenerator 200.

[0056] Thus, the water condensed by the condenser 105 can be pumped sequentially by the first pump 106 to the first heat exchange channels H1 of multiple first regenerators 200. During this process, the high-temperature steam flowing out of the exhaust port of the second turbine 104 can flow into the second heat exchange channels H2 of multiple first regenerators 200 respectively. The high-temperature steam flowing out of the exhaust port of the second turbine 104 can be used to heat the water flowing through the first heat exchange channel H1 of each first regenerator 200, so that the water flowing through the first heat exchange channel H1 of the first regenerator 200 can be heated and vaporized in the future.

[0057] Each of the multiple second regenerators 300 has a third heat exchange channel H3 and a fourth heat exchange channel H4 for exchanging heat with the third heat exchange channel H3. The third heat exchange channels H3 of the multiple second regenerators 300 are sequentially connected to the air inlet of the first combustion chamber 101, and the third heat exchange channels H3 of the multiple second regenerators 300 are used to receive liquid flowing out from the first heat exchange channel H1 of the multiple first regenerators 200; the fourth heat exchange channels H4 of the multiple second regenerators 300 are connected to the air outlet or air extraction port of the first turbine 102; in two adjacent second regenerators 300, the air outlet of the fourth heat exchange channel H4 of one second regenerator 300 is connected to the air inlet of the fourth heat exchange channel H4 of the other second regenerator 300.

[0058] Thus, water flowing through the first heat exchange channel H1 of multiple first regenerators 200 can sequentially flow to the third heat exchange channel H3 of multiple second regenerators 300. During this process, high-temperature steam flowing out of the outlet or exhaust port of the first turbine 102 can flow into the fourth heat exchange channel H4 of the second regenerator 300. The high-temperature steam flowing out of the outlet or exhaust port of the first turbine 102 can be used to heat the water flowing through the third heat exchange channel H3 of each second regenerator 300, allowing the water flowing into the third heat exchange channel H3 of the first second regenerator 300 to pass through multiple second regenerators. After the heat exchanger 300 is heated and vaporized, since the third heat exchange channel H3 of the multiple second heat exchangers 300 is sequentially connected to the air inlet of the first combustion chamber 101, the inlet temperature of the first combustion chamber 101 can be increased, thereby increasing the temperature of the hydrogen and oxygen flowing into the first combustion chamber 101, thus improving the combustion efficiency of the first combustion chamber 101. It can also realize the efficient utilization of the heat generated by hydrogen combustion. Compared with the traditional closed Rankine cycle, the combustion chamber is for hydrogen and pure oxygen combustion, which can achieve higher main steam parameters, and the combustion products are only water, improving the cleanliness of the cycle power generation system 10.

[0059] It should be noted that the circulating power generation system 10 also includes a first generator 710 connected to the first turbine 102 (e.g., Figure 3As shown in the figure, the high-temperature steam generated by the combustion of oxygen and hydrogen in the first combustion chamber 101 can enter the first turbine 102 and expand to do work in the first turbine 102. During this process, the first turbine 102 can drive the first generator 710 to generate electricity.

[0060] The circulating power generation system 10 also includes a second generator (not shown in the figure) connected to the second turbine 104. The high-temperature steam generated by the combustion of oxygen and hydrogen in the second combustion chamber 103 can enter the second turbine 104 and expand and do work in the second turbine 104. During this process, the second turbine 104 can drive the second generator to generate electricity.

[0061] In some embodiments, the pipe between the outlet of the condenser 105 and the first pump 106 is connected to the outlet of the second heat exchange channel H2 of the first regenerator 200 closest to the first pump 106.

[0062] Optionally, the number of first regenerators 200 is at least three.

[0063] For example, the number of first regenerators 200 is three, four or more.

[0064] Taking four first regenerators 200 as an example, pointing from away from the first pump 106 towards the first pump 106, the four first regenerators 200 are designated as the first, second, third, and fourth first regenerators 200. The second turbine 104 has multiple exhaust ports, including a first-stage exhaust port, a second-stage exhaust port, a third-stage exhaust port, and a fourth-stage exhaust port. The first-stage exhaust port is connected to the inlet end of the second heat exchange channel H2 of the first first regenerator 200, the second-stage exhaust port is connected to the inlet end of the second heat exchange channel H2 of the second first regenerator 200, and the third-stage exhaust port is connected to the inlet end of the second heat exchange channel H2 of the third first regenerator 200. The air inlet is connected to the air outlet of the fourth stage air extraction port, which is connected to the air inlet of the second heat exchange channel H2 of the fourth first regenerator 200. The air outlet of the second heat exchange channel H2 of the first first regenerator 200 is connected to the air inlet of the second heat exchange channel H2 of the second first regenerator 200. The air outlet of the second heat exchange channel H2 of the second first regenerator 200 is connected to the air inlet of the second heat exchange channel H2 of the third first regenerator 200. The air outlet of the second heat exchange channel H2 of the third first regenerator 200 is connected to the air inlet of the second heat exchange channel H2 of the fourth first regenerator 200. The air outlet of the second heat exchange channel H2 of the fourth first regenerator 200 is connected to the pipeline between the water outlet of the condenser 105 and the first pump 106.

[0065] Thus, the high-temperature steam generated after the second turbine 104 completes its expansion work will flow step by step to the second heat exchange channel H2 of the first first regenerator 200, the second first regenerator 200, the third first regenerator 200, and the fourth first regenerator 200. The water condensed by the condenser 105 can be pumped by the first pump 106 to the first heat exchange channel H1 of the fourth first regenerator 200, the third first regenerator 200, the second first regenerator 200, and the first first regenerator 200, and then transported to the deaerator 410 described below. This allows the water condensed by the condenser 105 to be heated and vaporized in subsequent processes, thereby increasing the inlet temperature of the first combustion chamber 101 and thus improving the combustion efficiency of the first combustion chamber 101.

[0066] In some embodiments, the circulating power generation system 10 further includes a deaerator 410 and a second pump 420. The deaerator 410 has an inlet and an outlet, and the inlet of the deaerator 410 is sequentially connected to the outlet end of the first heat exchange channel H1 of a plurality of first regenerators 200. The deaerator 410 supplies liquid flowing out of the outlet of the deaerator 410 to the third heat exchange channel H3 of a plurality of second regenerators 300 via the second pump 420.

[0067] In this way, the deaerator 410 can be used to deoxygenate the high-temperature steam and the water obtained from the condenser 105, and then the water can flow to the third heat exchange channel H3 of multiple second regenerators 300 so that the condensed water can be heated and vaporized in the future.

[0068] In some embodiments, the circulating power generation system 10 further includes a third turbine 107 and a third regenerator 500. The third turbine 107 has an inlet, an outlet, and an outlet. The inlet of the third turbine 107 is connected to the outlet of the second combustion chamber 103, and the outlet of the third turbine 107 is connected to the inlet of the second turbine 104. The third regenerator 500 has a fifth heat exchange channel H5 and a sixth heat exchange channel H6 for exchanging heat with the fifth heat exchange channel H5. The liquid inlet of the fifth heat exchange channel H5 of the third regenerator 500 is connected to the liquid outlet of the second pump 420, and the liquid outlet of the fifth heat exchange channel H5 of the third regenerator 500 is connected to the third heat exchange channel H3 of an adjacent second regenerator 300. The sixth heat exchange channel H6 of the third regenerator 500 is connected to the outlet of the third turbine 107.

[0069] Optionally, the number of second regenerators 300 is at least two.

[0070] The number of secondary regenerators 300 can be two, three, or more.

[0071] Taking two second regenerators 300 as an example, pointing from near the first combustion chamber 101 to away from the first combustion chamber 101, the two second regenerators 300 are designated as the first second regenerator 300 and the second second regenerator 300. The exhaust port of the first turbine 102 is connected to the inlet of the fourth heat exchange channel H4 of the first second regenerator 300, and the exhaust port of the first turbine 102 is connected to the inlet of the second combustion chamber 103. Furthermore, the exhaust port of the first turbine 102 branches off... A bypass is connected to the inlet of the fourth heat exchange channel H4 of the second second regenerator 300. The outlet of the fourth heat exchange channel H4 of the first second regenerator 300 is connected to the inlet of the fourth heat exchange channel H4 of the second second regenerator 300. The outlet of the fourth heat exchange channel H4 of the second second regenerator 300 is connected to the inlet of the sixth heat exchange channel H6 of the third regenerator 500. The outlet of the sixth heat exchange channel H6 of the third regenerator 500 is connected to the inlet of the deaerator 410.

[0072] The high-temperature steam generated after combustion in the second combustion chamber 103 first enters the third turbine 107, and then the second turbine 104. It expands and does work in the third turbine 107 and the second turbine 104 respectively. The high-temperature steam after expansion and work in the third turbine 107 can flow to the sixth heat exchange channel H6 of the third regenerator 500. The water after deoxygenation by the deaerator 410 can flow through the second pump 420 to the fifth heat exchange channel H5 of the third regenerator 500, the third heat exchange channel H3 of the second second regenerator 300 and the third heat exchange channel H3 of the first second regenerator 300. It can be heated and vaporized by the high-temperature steam flowing into the sixth heat exchange channel H6 of the third regenerator 500 and the high-temperature steam flowing into the fourth heat exchange channel H4 of the multiple second regenerators 300, thereby increasing the inlet temperature of the first combustion chamber 101 and improving the combustion efficiency of the first combustion chamber 101.

[0073] Furthermore, since the outlet of the sixth heat exchange channel H6 of the third regenerator 500 is connected to the inlet of the deaerator 410, the high-temperature steam flowing into the sixth heat exchange channel H6 of the third regenerator 500 heats the water flowing into the fifth heat exchange channel H5 of the third regenerator 500. The high-temperature steam flowing out of the third regenerator 500 will then enter the deaerator 410 and then flow into the circulation system of the circulating power generation system 10 for recycling.

[0074] In some embodiments, the circulating power generation system 10 further includes a third generator (not shown) connected to the third turbine 107. The high-temperature water vapor generated after combustion in the second combustion chamber 103 first enters the third turbine 107 and then enters the second turbine 104, where it expands and does work in the third turbine 107 and the second turbine 104 respectively. During the process of the high-temperature water vapor expanding and doing work in the third turbine 107, the third turbine 107 can drive the third generator to generate electricity.

[0075] In some embodiments, the circulating power generation system 10 further includes a steam turbine 430 having an air inlet, and the air outlet of the third turbine 107 is connected to the air inlet of the steam turbine 430 to drive the second pump 420 by means of the steam turbine 430.

[0076] Optionally, the steam turbine 430 is a small steam turbine.

[0077] Optionally, the steam turbine 430 also has an outlet, which is connected to the inlet of the deaerator 410.

[0078] A bypass is branched off from the outlet of the third turbine 107 and connected to the inlet of the steam turbine 430 to provide the steam turbine 430 with the air source to drive the second pump 420. The high-temperature steam flowing out of the outlet of the third turbine 107 is used to drive the second pump 420 to do work. After the work is completed, the high-temperature steam will enter the deaerator 410 and then flow into the circulation system of the circulating power generation system 10 for recycling.

[0079] Specifically, such as Figure 1In the illustrated embodiment, oxygen and hydrogen entering the first combustion chamber 101 are burned within the first combustion chamber 101. The resulting high-temperature steam first enters the first turbine 102, where it expands and performs work. It then enters the second combustion chamber 103. The oxygen and hydrogen entering the second combustion chamber 103 also burn there, producing high-temperature water vapor. This high-temperature water vapor, along with the gas flowing from the first turbine 102 into the second combustion chamber 103, enters the third turbine 107. The steam then enters the second turbine 104, where it expands and performs work in the third turbine 107 and the second turbine 104. After completing the expansion and work, the high-temperature steam enters the condenser 105 and is condensed into water. The water condensed in the condenser 105 can be pumped by the first pump 106 to the fourth first regenerator 200, the third first regenerator 200, the second first regenerator 200, and the first heat exchange channel H1 of the first first regenerator 200, and then transported to the deaerator 410. After being deaerated by the deaerator 410, the water flows sequentially through the second pump 420 to the fifth heat exchange channel H5 of the third regenerator 500, the third heat exchange channel H3 of the second second regenerator 300, and the third heat exchange channel H3 of the first second regenerator 300. During this process, the high-temperature steam after the expansion and work done by the second turbine 104 can flow into the second heat exchange channel H2 of multiple first regenerators 200, the high-temperature steam after the expansion and work done by the third turbine 107 can flow into the sixth heat exchange channel H6 of the third regenerator 500, and the high-temperature steam after the expansion and work done by the first turbine 102 can flow into the fourth heat exchange channel H4 of multiple second regenerators 300. In this way, the water condensed by the condenser 105 can be heated and vaporized into steam. The vaporized steam will flow into the first combustion chamber 101, thereby increasing the inlet temperature of the first combustion chamber 101 and thus improving the combustion efficiency of the first combustion chamber 101.

[0080] By using a semi-closed Rankine cycle based on the direct combustion of hydrogen and oxygen, the efficient utilization of hydrogen energy in the field of heat-work conversion is improved.

[0081] In some embodiments, the circulating power generation system 10 further includes a fourth regenerator 610 and a fifth regenerator 620 located further away from the first combustion chamber 101 than the fourth regenerator 610. The fourth regenerator 610 has a seventh heat exchange channel H7 and an eighth heat exchange channel H8 for exchanging heat with the seventh heat exchange channel H7. The fifth regenerator 620 has a ninth heat exchange channel H9 and a tenth heat exchange channel H10 for exchanging heat with the ninth heat exchange channel H9. The seventh heat exchange channel H7 of the fourth regenerator 610 and the ninth heat exchange channel H9 of the fifth regenerator 620 are connected between the air inlet of the first combustion chamber 101 and the third heat exchange channel H3 of the second regenerator 300. The eighth heat exchange channel H8 of the fourth regenerator 610 and the tenth heat exchange channel H10 of the fifth regenerator 620 are both connected to the exhaust port of the first turbine 102.

[0082] In this embodiment, the plurality of air extraction ports of the first turbine 102 include a first-stage air extraction port and a second-stage air extraction port.

[0083] The first stage exhaust port of the first turbine 102 is connected to the air inlet of the eighth heat exchange channel H8 of the fourth regenerator 610 and the air inlet of the tenth heat exchange channel H10 of the fifth regenerator 620, respectively. The second stage exhaust port of the first turbine 102 is connected to the air inlet of the fourth heat exchange channel H4 of the first second regenerator 300. The exhaust port of the first turbine 102 is connected to the air inlet of the second combustion chamber 103, and a bypass is branched off from the exhaust port of the first turbine 102 and connected to the air inlet of the fourth heat exchange channel H4 of the second second regenerator 300.

[0084] Thus, the water deoxygenated by the deaerator 410 can flow sequentially through the second pump 420 to the fifth heat exchange channel H5 of the third regenerator 500, the third heat exchange channel H3 of the second second regenerator 300, and the third heat exchange channel H3 of the first second regenerator 300. After that, it will flow to the ninth heat exchange channel H9 of the fifth regenerator 620 and the seventh heat exchange channel H7 of the fourth regenerator 610. It can be heated and vaporized by the high-temperature steam flowing into the sixth heat exchange channel H6 of the third regenerator 500, the high-temperature steam flowing into the fourth heat exchange channel H4 of the multiple second regenerators 300, the high-temperature steam flowing into the tenth heat exchange channel H10 of the fifth regenerator 620, and the eighth heat exchange channel H8 of the fourth regenerator 610, thereby increasing the inlet temperature of the first combustion chamber 101 and thus improving the combustion efficiency of the first combustion chamber 101.

[0085] In some embodiments, the circulating power generation system 10 further includes a sixth regenerator 630, a seventh regenerator 640, and a first compressor 650. The sixth regenerator 630 has an eleventh heat exchange channel H11 and a twelfth heat exchange channel H12 for exchanging heat with the eleventh heat exchange channel H11. The seventh regenerator 640 has a thirteenth heat exchange channel H13 and a fourteenth heat exchange channel H14 for exchanging heat with the thirteenth heat exchange channel H13. The eleventh heat exchange channel H11 of the sixth regenerator 630 and the thirteenth heat exchange channel H13 of the seventh regenerator 640 are sequentially connected and connected between the ninth heat exchange channel H9 of the fifth regenerator 620 and the third heat exchange channel H3 of the adjacent second regenerator 300. The outlet of the tenth heat exchange channel H10 of the fifth regenerator 620 is connected to the inlet of the twelfth heat exchange channel H12 of the sixth regenerator 630. The outlet of the twelfth heat exchange channel H12 of the sixth regenerator 630 is connected to the inlet of the first compressor 650. The outlet of the first compressor 650 and the outlet of the eleventh heat exchange channel H11 of the sixth regenerator 630 are connected in parallel to the ninth heat exchange channel H9 of the fifth regenerator 620.

[0086] The high-temperature steam flowing into the tenth heat exchange channel H10 of the fifth regenerator 620 heats the fluid (vaporized water) flowing into the ninth heat exchange channel H9 of the fifth regenerator 620. Then, it flows to the twelfth heat exchange channel H12 of the sixth regenerator 630 and into the first compressor 650. After being compressed and pressurized by the first compressor 650, it flows together with the fluid (vaporized water) flowing out of the eleventh heat exchange channel H11 of the sixth regenerator 630 into the ninth heat exchange channel H9 of the fifth regenerator 620, thereby pressurizing the gas flowing into the inlet of the first combustion chamber 101.

[0087] In some embodiments, the circulating power generation system 10 further includes a second compressor 660, the outlet end of the twelfth heat exchange channel H12 of the sixth regenerator 630 is also connected to the inlet end of the fourteenth heat exchange channel H14 of the seventh regenerator 640, the outlet end of the fourteenth heat exchange channel H14 of the seventh regenerator 640 is connected to the inlet end of the second compressor 660, and the outlet end of the second compressor 660 and the outlet end of the thirteenth heat exchange channel H13 of the seventh regenerator 640 are connected in parallel to the eleventh heat exchange channel H11 of the sixth regenerator 630.

[0088] The high-temperature steam flowing into the twelfth heat exchange channel H12 of the sixth regenerator 630 heats the fluid (vaporized water) flowing into the eleventh heat exchange channel H11 of the sixth regenerator 630. Then, it flows into the fourteenth heat exchange channel H14 of the seventh regenerator 640 and the second compressor 660. After being compressed and pressurized by the second compressor 660, it flows together with the fluid (vaporized water) flowing out of the thirteenth heat exchange channel H13 of the seventh regenerator 640 into the eleventh heat exchange channel H11 of the sixth regenerator 630, so as to better pressurize the gas flowing into the inlet of the first combustion chamber 101.

[0089] In some embodiments, the circulating power generation system 10 further includes an eighth regenerator 670, which has a fifteenth heat exchange channel H15 and a sixteenth heat exchange channel H16 for exchanging heat with the fifteenth heat exchange channel H15. The fifteenth heat exchange channel H15 of the eighth regenerator 670 is connected between the outlet of the first turbine 102 and the inlet of the second combustion chamber 103. The outlet end of the eighth heat exchange channel H8 of the fourth regenerator 610 is connected to the inlet end of the sixteenth heat exchange channel H16 of the eighth regenerator 670, and the outlet end of the sixteenth heat exchange channel H16 of the eighth regenerator 670 is connected to the inlet end of the second compressor 660.

[0090] The high-temperature steam flowing into the eighth heat exchange channel H8 of the fourth regenerator 610 heats the fluid (vaporized water) flowing into the seventh heat exchange channel H7 of the fourth regenerator 610, and then flows into the sixteenth heat exchange channel H16 of the eighth regenerator 670, heating the gas in the fifteenth heat exchange channel H15 of the eighth regenerator 670. This heats the gas flowing from the outlet of the first turbine 102 to the inlet of the second combustion chamber 103, thereby increasing the inlet temperature of the second combustion chamber 103 and improving its combustion efficiency. The steam flowing out of the sixteenth heat exchange channel H16 of the eighth regenerator 670 also flows into the second compressor 660, and then into the circulation system of the circulating power generation system 10 for recycling.

[0091] Specifically, such as Figure 2In the illustrated embodiment, oxygen and hydrogen entering the first combustion chamber 101 are burned within the first combustion chamber 101. The resulting high-temperature steam first enters the first turbine 102, where it expands and performs work. It then enters the second combustion chamber 103. The oxygen and hydrogen entering the second combustion chamber 103 also burn there, producing high-temperature water vapor. This high-temperature water vapor, along with the gas flowing from the first turbine 102 into the second combustion chamber 103, enters the third turbine 107. The steam then enters the second turbine 104, where it expands and performs work in the third turbine 107 and the second turbine 104. After completing the expansion and work, the high-temperature steam enters the condenser 105 and is condensed into water. The water condensed in the condenser 105 can be pumped by the first pump 106 to the fourth first regenerator 200, the third first regenerator 200, the second first regenerator 200, and the first heat exchange channel H1 of the first first regenerator 200, and then transported to the deaerator 410. After deaeration by deaerator 410, the water flows sequentially through second pump 420 to the fifth heat exchange channel H5 of third regenerator 500, the third heat exchange channel H3 of second regenerator 300, and the third heat exchange channel H3 of first regenerator 300, where it is heated and vaporized into steam. The vaporized steam then flows sequentially into the thirteenth heat exchange channel H13 of seventh regenerator 640, the eleventh heat exchange channel H11 of sixth regenerator 630, the ninth heat exchange channel H9 of fifth regenerator 620, and the seventh heat exchange channel H7 of fourth regenerator 610, before flowing into first combustion chamber 101. During this process, the high-temperature steam from the expansion and work done by second turbine 104 can flow into the second heat exchange channels H2 of multiple first regenerators 200, and the high-temperature steam from the expansion and work done by third turbine 107... Warm steam can flow into the sixth heat exchange channel H6 of the third regenerator 500. High-temperature steam after the expansion and work done by the first turbine 102 can flow into the fourth heat exchange channel H4 of the multiple second regenerators 300, the tenth heat exchange channel H10 of the fifth regenerator 620, and the eighth heat exchange channel H8 of the fourth regenerator 610. High-temperature steam flowing out of the tenth heat exchange channel H10 of the fifth regenerator 620 can flow into the twelfth heat exchange channel H12 of the sixth regenerator 630. High-temperature steam flowing out of the twelfth heat exchange channel H12 of the sixth regenerator 630 can flow into the fourteenth heat exchange channel H14 of the seventh regenerator 640. In this way, the vaporized steam can be heated by multiple regenerators, thereby increasing the inlet temperature of the first combustion chamber 101 and improving the combustion efficiency of the first combustion chamber 101.

[0092] By applying a semi-closed Rankine cycle to hydrogen fuel utilization, high thermal efficiency is achieved. In particular, when the cycle is coupled with a supercritical compression regenerative process, the average heat absorption temperature is significantly increased, and the cycle thermal efficiency is further improved.

[0093] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0094] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A cyclic power generation system, characterized by, The circulating power generation system comprises: a first combustion chamber having an air inlet and an air outlet, the air inlet of the first combustion chamber being connected to a first oxygen source and a first hydrogen source respectively; a first turbine having an air inlet, an air outlet and an exhaust outlet, the air outlet of the first combustion chamber being connected to the air inlet of the first turbine; a second combustion chamber having an air inlet and an air outlet, the air outlet of the first turbine being connected to the air inlet of the second combustion chamber, the air inlet of the second combustion chamber being connected to a second oxygen source and a second hydrogen source respectively; a second turbine having an air inlet, an air outlet and an exhaust outlet, the second turbine being capable of receiving the gas flowing out of the air outlet of the second combustion chamber; a condenser having an air inlet and a water outlet, the air outlet of the second turbine being connected to the air inlet of the condenser; a first pump and a plurality of first heat exchangers, each of the first heat exchangers having a first heat exchange channel and a second heat exchange channel for exchanging heat with the first heat exchange channel, the water outlet of the condenser being connected to the liquid inlet of the first heat exchange channel of each of the first heat exchangers in sequence through the first pump, the second heat exchange channel of each of the first heat exchangers being connected to the exhaust outlet of the second turbine, the gas outlet of the second heat exchange channel of one of the first heat exchangers being connected to the gas inlet of the second heat exchange channel of another of the first heat exchangers; and a plurality of second heat exchangers, each of the second heat exchangers having a third heat exchange channel and a fourth heat exchange channel for exchanging heat with the third heat exchange channel, the third heat exchange channel of each of the second heat exchangers being connected to the air inlet of the first combustion chamber in sequence and being capable of receiving the liquid flowing out of the first heat exchange channel of each of the first heat exchangers, the fourth heat exchange channel of each of the second heat exchangers being connected to the air outlet or the exhaust outlet of the first turbine, the gas outlet of the fourth heat exchange channel of one of the second heat exchangers being connected to the gas inlet of the fourth heat exchange channel of another of the second heat exchangers.

2. The cyclic power generating system of claim 1, wherein, The circulating power generation system further comprises: a deaerator having a liquid inlet and a liquid outlet, the liquid inlet of the deaerator being connected to the liquid outlet of the first heat exchange channel of each of the first heat exchangers in sequence; and a second pump, the deaerator being capable of supplying the liquid flowing out of the liquid outlet of the deaerator to the third heat exchange channel of each of the second heat exchangers through the second pump.

3. The cyclic power generating system of claim 2, wherein, The circulating power generation system further comprises: a third turbine having an air inlet, an air outlet and an exhaust outlet, the air inlet of the third turbine being connected to the air outlet of the second combustion chamber, the air outlet of the third turbine being connected to the air inlet of the second turbine; and a third pump, the third turbine being capable of receiving the liquid flowing out of the liquid outlet of the deaerator through the third pump. a third heat exchanger; a fifth heat exchange channel and a sixth heat exchange channel for heat exchange with the fifth heat exchange channel; the liquid inlet end of the fifth heat exchange channel of the third heat exchanger is communicated with the liquid outlet end of the second pump, the liquid outlet end of the fifth heat exchange channel of the third heat exchanger is communicated with the third heat exchange channel of an adjacent second heat exchanger; the sixth heat exchange channel of the third heat exchanger is communicated with the air outlet of the third turbine.

4. The cyclic power generating system of claim 3, wherein, The circulating power generation system further comprises a steam turbine connected with the second pump, and the steam turbine has an air inlet; The air outlet of the third turbine is connected with the air inlet of the steam turbine to drive the second pump by the steam turbine.

5. The cyclic power generating system of claim 1, wherein, The number of the first heat exchangers is at least three.

6. The cyclic power generating system of claim 1, wherein, The number of the second heat exchangers is at least two.

7. The cyclic power generating system according to any one of claims 1 to 6, wherein The circulating power generation system further comprises a fourth heat exchanger and a fifth heat exchanger farther from the first combustion chamber than the fourth heat exchanger; The fourth heat exchanger has a seventh heat exchange channel and an eighth heat exchange channel for heat exchange with the seventh heat exchange channel; The fifth heat exchanger has a ninth heat exchange channel and a tenth heat exchange channel for heat exchange with the ninth heat exchange channel; The seventh heat exchange channel of the fourth heat exchanger and the ninth heat exchange channel of the fifth heat exchanger are communicated between the air inlet of the first combustion chamber and the third heat exchange channel of the second heat exchanger; The eighth heat exchange channel of the fourth heat exchanger and the tenth heat exchange channel of the fifth heat exchanger are both communicated with the air outlet of the first turbine.

8. The cyclic power generating system of claim 7, wherein, The circulating power generation system further comprises a sixth heat exchanger, a seventh heat exchanger and a first compressor; The sixth heat exchanger has an eleventh heat exchange channel and a twelfth heat exchange channel for heat exchange with the eleventh heat exchange channel; The seventh heat exchanger has a thirteenth heat exchange channel and a fourteenth heat exchange channel for heat exchange with the thirteenth heat exchange channel; The eleventh heat exchange channel of the sixth heat exchanger and the thirteenth heat exchange channel of the seventh heat exchanger are sequentially communicated and communicated between the ninth heat exchange channel of the fifth heat exchanger and the third heat exchange channel of an adjacent second heat exchanger; The air outlet end of the tenth heat exchange channel of the fifth heat exchanger is communicated with the air inlet end of the twelfth heat exchange channel of the sixth heat exchanger, the air outlet end of the twelfth heat exchange channel of the sixth heat exchanger is communicated with the air inlet end of the first compressor, and the air outlet end of the first compressor is communicated in parallel with the air outlet end of the eleventh heat exchange channel of the sixth heat exchanger and the ninth heat exchange channel of the fifth heat exchanger.

9. The cyclic power generating system of claim 8, wherein, The circulating power generation system further comprises a second compressor; The air outlet end of the twelfth heat exchange channel of the sixth heat exchanger is further communicated with the air inlet end of the fourteenth heat exchange channel of the seventh heat exchanger, the air outlet end of the fourteenth heat exchange channel of the seventh heat exchanger is communicated with the air inlet end of the second compressor, and the air outlet end of the second compressor is communicated in parallel with the air outlet end of the thirteenth heat exchange channel of the seventh heat exchanger and the eleventh heat exchange channel of the sixth heat exchanger.

10. The cyclic power producing system of claim 9 wherein, The cycle power generation system further comprises an eighth recuperator; The eighth recuperator has a fifteenth heat exchange passage and a sixteenth heat exchange passage for heat exchange with the fifteenth heat exchange passage; The fifteenth heat exchange passage of the eighth recuperator is communicated between the gas outlet of the first turbine and the gas inlet of the second combustion chamber; The gas outlet end of the eighth heat exchange passage of the fourth recuperator is communicated with the gas inlet end of the sixteenth heat exchange passage of the eighth recuperator, and the gas outlet end of the sixteenth heat exchange passage of the eighth recuperator is communicated with the gas inlet end of the second compressor.

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