Steam generating system based on compression-ejection heat pump

Abstract

The application provides a steam generating system based on a compression-ejection heat pump and belongs to the technical field of heat pumps. A low-temperature heat exchanger has a circulating working medium passage in communication with a compressor, the compressor also has a circulating working medium passage in communication with an ejector low-pressure steam inlet, a steam generator has a working steam passage in communication with an ejector high-pressure steam inlet, the ejector also has a medium-pressure steam passage in communication with a heat supplier, the heat supplier also has a condensate pipeline in communication with the steam generator through a booster pump, the heat supplier also has a condensate pipeline in communication with the low-temperature heat exchanger through a throttle valve, the outside has a working steam passage in communication with a second ejector high-pressure steam inlet, the outside has a heated medium passage in communication with a second ejector low-pressure steam inlet after passing through the heat supplier, the second ejector also has a user steam passage in communication with the outside; the steam generator also has a high-temperature heat medium passage in communication with the outside, and the low-temperature heat exchanger also has a low-temperature heat medium passage in communication with the outside, thereby forming a steam generating system based on a compression-ejection heat pump.

Description

Technical fields:

[0001] This invention belongs to the field of thermodynamics and heat pump technology. Background technology:

[0002] People's lives and production processes require steam with different parameters; compared with traditional steam production technologies, using heat pump technology to provide steam is an important means to achieve efficient and high-value energy utilization. In practical applications, the operating parameters, performance index, manufacturing cost, and adaptability of heat pumps need to be given priority and emphasis.

[0003] Vapor compression heat pump technology, which operates on the reverse Rankine cycle principle, has the advantage of being able to achieve constant-temperature heat absorption; however, it has the disadvantage that when providing high-temperature heating or deep cooling, the required compressor pressure ratio will increase, thus raising manufacturing costs.

[0004] An ejector is a pressure-boosting component that effectively utilizes high-temperature heat resources. It has the advantages of simple structure, reliable operation, low investment and long service life. In addition, compared with compressors, ejectors are more adaptable to the compression of wet steam.

[0005] In many cases, industrial production requires high-grade heat loads, which are often accompanied by the generation of associated heat at relatively high temperatures. Therefore, achieving efficient and high-value utilization of associated industrial heat in the field of refrigeration / heating presents a technical challenge.

[0006] Based on the fundamental principles of simple, proactive, and efficient energy production, this invention presents a steam generation system based on a compression-ejector heat pump that integrates technologies, has a reasonable process, a simple structure, low manufacturing cost, and achieves rationalized performance indices. Summary of the Invention:

[0007] The main objective of this invention is to provide a steam generation system based on a compression-ejector heat pump. The specific contents of the invention are described in detail below:

[0008] 1. A steam generation system based on a compression-ejector heat pump mainly consists of a compressor, an ejector, a steam generator, a heater, a booster pump, a throttling valve, a low-temperature heat exchanger, and a second ejector. The low-temperature heat exchanger has a circulating working fluid channel connected to the compressor, and the compressor also has a circulating working fluid channel connected to the low-pressure steam inlet of the ejector. The steam generator has a working steam channel connected to the high-pressure steam inlet of the ejector, and the ejector also has a medium-pressure steam channel connected to the heater. The heater also has a condensate pipeline connected to the steam generator via the booster pump, and a condensate pipeline connected to the low-temperature heat exchanger via the throttling valve. Externally, there is a working steam channel connected to the high-pressure steam inlet of the second ejector, and an external channel for the heated medium connected to the low-pressure steam inlet of the second ejector after passing through the heater. The second ejector also has a user steam channel connected to the outside. The steam generator also has a high-temperature heat medium channel connected to the outside, and the low-temperature heat exchanger also has a low-temperature heat medium channel connected to the outside, forming a steam generation system based on a compression-ejector heat pump.

[0009] 2. A steam generation system based on a compression-ejector heat pump mainly consists of a compressor, an ejector, a steam generator, a heater, a booster pump, a throttling valve, a low-temperature heat exchanger, a second ejector, and a second booster pump. The low-temperature heat exchanger has a circulating working fluid channel connected to the compressor, and the compressor also has a circulating working fluid channel connected to the low-pressure steam inlet of the ejector. The steam generator has a working steam channel connected to the high-pressure steam inlet of the ejector, and the ejector also has a medium-pressure steam channel connected to the heater. The heater also has a condensate pipeline connected to the steam generator via the booster pump, and a condensate pipeline connected to the low-temperature heat exchanger via the throttling valve. Externally, a liquid channel connects to the steam generator via the second booster pump, and the steam generator then has a working steam channel connected to the high-pressure steam inlet of the second ejector. Externally, a heated medium channel connects to the low-pressure steam inlet of the second ejector via the heater, and the second ejector also has a user steam channel connected to the outside. The steam generator also has a high-temperature heat medium channel connected to the outside, and the low-temperature heat exchanger also has a low-temperature heat medium channel connected to the outside, forming a steam generation system based on a compression-ejector heat pump.

[0010] 3. A steam generation system based on a compression-ejector heat pump mainly consists of a compressor, an ejector, a steam generator, a heater, a booster pump, a throttling valve, a low-temperature heat exchanger, a second ejector, a second booster pump, and a second steam generator. The low-temperature heat exchanger has a circulating working fluid channel connected to the compressor, and the compressor also has a circulating working fluid channel connected to the low-pressure steam inlet of the ejector. The steam generator has a working steam channel connected to the high-pressure steam inlet of the ejector, and the ejector also has a medium-pressure steam channel connected to the heater. The heater also has a condensate pipeline connected to the steam generator via the booster pump. The condensate pipeline is connected to the low-temperature heat exchanger via a throttling valve. An external liquid channel connects to the second steam generator via a second booster pump. The second steam generator also has a working steam channel connecting to the high-pressure steam inlet of the second ejector. An external heated medium channel connects to the low-pressure steam inlet of the second ejector after passing through a heater. The second ejector also has a user steam channel connecting to the outside. The steam generator and the second steam generator also have high-temperature heat medium channels connecting to the outside, and the low-temperature heat exchanger also has a low-temperature heat medium channel connecting to the outside, forming a steam generation system based on a compression-ejector heat pump.

[0011] 4. A steam generation system based on a compression-ejector heat pump mainly consists of a compressor, an ejector, a heater, a throttling valve, a low-temperature heat exchanger, and a second ejector. The low-temperature heat exchanger has a circulating working fluid channel connected to the compressor, and the compressor also has a circulating working fluid channel connected to the low-pressure steam inlet of the ejector. Externally, it has a working steam channel connected to the high-pressure steam inlet of the ejector. The ejector also has a medium-pressure steam channel connected to the heater, and the heater has a condensate pipeline connected to the outside. The heater also has a condensate pipeline connected to the low-temperature heat exchanger via a throttling valve. Externally, it has a working steam channel connected to the high-pressure steam inlet of the second ejector, and an external channel for the heated medium connected to the low-pressure steam inlet of the second ejector after passing through the heater. The second ejector also has a user steam channel connected to the outside. The low-temperature heat exchanger also has a low-temperature heat medium channel connected to the outside, forming a steam generation system based on a compression-ejector heat pump.

[0012] 5. A steam generation system based on a compression-ejector heat pump is formed by adding a regenerator to any of the compression-ejector heat pump-based steam generation systems described in items 1-4. The original system is modified so that the condensate pipeline of the heater is connected to the low-temperature heat exchanger via a throttling valve, and the condensate pipeline of the heater is connected to the low-temperature heat exchanger via the regenerator and the throttling valve. The original system is modified so that the circulating working fluid channel of the low-temperature heat exchanger is connected to the compressor via the regenerator, thus forming a steam generation system based on a compression-ejector heat pump.

[0013] 6. A steam generation system based on a compression-ejector heat pump is formed by adding a regenerator, an expander, and a second heater to any of the compression-ejector heat pump-based steam generation systems described in items 1-4. The compressor's circulating working fluid channel connected to the low-pressure steam inlet of the ejector is adjusted so that the compressor's circulating working fluid channel splits into two paths after passing through the second heater—the first path connects to the low-pressure steam inlet of the ejector, and the second path connects to the expander. The expander also has a circulating working fluid channel connected to the regenerator, which then connects to the compressor via an intermediate port. The heater's condensate pipeline connected to the low-temperature heat exchanger via a throttling valve is adjusted so that the heater has a condensate or wet steam pipeline connected to the low-temperature heat exchanger via the regenerator and the throttling valve. The external channel for the heated medium, after passing through the heater and connecting to the low-pressure steam inlet of the second ejector, is adjusted so that the external channel for the heated medium passes through the second heater and then connects to the low-pressure steam inlet of the second ejector, thus forming a steam generation system based on a compression-ejector heat pump.

[0014] 7. A steam generation system based on a compression-ejector heat pump, comprising any of the compression-ejector heat pump-based steam generation systems described in items 1-4, with the addition of a regenerator, an expander, a second heater, and a second regenerator. The compressor's circulating working fluid channel connected to the low-pressure steam inlet of the ejector is adjusted so that the compressor's circulating working fluid channel, after passing through the second heater, splits into two paths—the first path connecting to the low-pressure steam inlet of the ejector and the second path connecting to the expander. The expander also has a circulating working fluid channel connected to the regenerator, which is then connected to the compressor via an intermediate port. The heater has a condensate pipeline... The throttle valve is connected to the low-temperature heat exchanger and adjusted so that the heater has a condensate or wet steam pipeline connected to the low-temperature heat exchanger via the regenerator, the second regenerator and the throttle valve. The low-temperature heat exchanger has a circulating working fluid channel connected to the compressor and adjusted so that the low-temperature heat exchanger has a circulating working fluid channel connected to the compressor via the second regenerator. The external channel for the heated medium is connected to the low-pressure steam inlet of the second ejector after passing through the heater and adjusted so that the external channel for the heated medium passes through the second heater and the heater is connected to the low-pressure steam inlet of the second ejector, thus forming a steam generation system based on a compression-ejector heat pump.

[0015] 8. A steam generation system based on a compression-ejector heat pump is formed by adding a two-phase expander to replace the throttle valve in any of the compression-ejector heat pump-based steam generation systems described in items 1-7. The two-phase expander is connected to the compressor and transmits power to form a steam generation system based on a compression-ejector heat pump.

[0016] 9. A steam generation system based on a compression-ejector heat pump is formed by adding a nozzle and replacing the throttle valve to any of the compression-ejector heat pump-based steam generation systems described in items 1-7, and adding a dual-energy compressor and replacing the compressor.

[0017] 10. A steam generation system based on a compression-ejector heat pump is formed by adding a nozzle and replacing the throttle valve, adding a dual-energy compressor and replacing the compressor, and adding an expander speed-up unit and replacing the expander in any of the compression-ejector heat pump steam generation systems described in items 6-7, thereby forming a steam generation system based on a compression-ejector heat pump. Attached image description:

[0018] Figure 1 This is a first principle thermodynamic system diagram of a steam generation system based on a compression-ejector heat pump provided by the present invention.

[0019] Figure 2 This is a second principle thermodynamic system diagram of a steam generation system based on a compression-ejector heat pump provided by the present invention.

[0020] Figure 3 This is a third principle thermodynamic system diagram of a steam generation system based on a compression-ejector heat pump provided by the present invention.

[0021] Figure 4 This is a fourth principle thermodynamic system diagram of a steam generation system based on a compression-ejector heat pump provided by the present invention.

[0022] Figure 5 This is the fifth principle thermodynamic system diagram of a steam generation system based on a compression-ejector heat pump provided by the present invention.

[0023] Figure 6 This is the sixth principle thermodynamic system diagram of a steam generation system based on a compression-ejector heat pump provided by the present invention.

[0024] Figure 7 This is the seventh principle thermodynamic system diagram of a steam generation system based on a compression-ejector heat pump provided by the present invention.

[0025] Figure 8 This is the eighth principle thermodynamic system diagram of a steam generation system based on a compression-ejector heat pump provided by the present invention.

[0026] Figure 9 This is the ninth principle thermodynamic system diagram of a steam generation system based on a compression-ejector heat pump provided by the present invention.

[0027] Figure 10 This is the tenth principle thermodynamic system diagram of a steam generation system based on a compression-ejector heat pump provided by the present invention.

[0028] Figure 11This is the 11th principle thermodynamic system diagram of a steam generation system based on a compression-ejector heat pump provided by the present invention.

[0029] In the diagram, 1-compressor, 2-ejector, 3-steam generator, 4-heater, 5-boost pump, 6-throttle valve, 7-low temperature heat exchanger, 8-second ejector, 9-second boost pump, 10-second steam generator, 11-regenerator, 12-expander, 13-second heater, 14-second regenerator, 15-two-phase expander, 16-nozzle, 17-dual-energy compressor, 18-expander speed increaser. Detailed implementation method:

[0030] First, it should be noted that the structure and process are not repeated unless necessary, and obvious processes are not described. The invention will now be described in detail with reference to the accompanying drawings and examples.

[0031] Figure 1 The steam generation system based on a compression-ejector heat pump shown is implemented as follows:

[0032] (1) Structurally, it is mainly composed of a compressor, an ejector, a steam generator, a heater, a booster pump, a throttle valve, a low-temperature heat exchanger, and a second ejector. The low-temperature heat exchanger 7 has a circulating working medium channel connected to the compressor 1. The compressor 1 also has a circulating working medium channel connected to the low-pressure steam inlet of the ejector 2. The steam generator 3 has a working steam channel connected to the high-pressure steam inlet of the ejector 2. The ejector 2 also has a medium-pressure steam channel connected to the heater 4. The heater 4 also has a condensate pipeline connected to the steam generator 3 via the booster pump 5. The heater 4 also has a condensate pipeline connected to the low-temperature heat exchanger 7 via the throttle valve 6. Externally, there is a working steam channel connected to the high-pressure steam inlet of the second ejector 8. Externally, there is a heated medium channel connected to the low-pressure steam inlet of the second ejector 8 via the heater 4. The second ejector 8 also has a user steam channel connected to the outside. The steam generator 3 also has a high-temperature heat medium channel connected to the outside. The low-temperature heat exchanger 7 also has a low-temperature heat medium channel connected to the outside.

[0033] (2) In terms of process, the circulating working fluid discharged from compressor 1 is supplied to ejector 2. The working steam generated by steam generator 3 enters ejector 2 through high-pressure steam inlet. The working steam flows through nozzles to reduce pressure and increase speed, forming a low-pressure environment. The circulating working fluid (refrigerant steam) discharged from compressor 1 is drawn into the low-pressure zone of ejector 2. After the two steam streams are mixed, they flow through diffuser to reduce speed and increase pressure, forming medium-pressure steam, which is then supplied to heater 4. The medium-pressure steam enters heater 4 to release heat and condense. Then it is divided into two streams: the first stream flows through booster pump 5 to increase pressure and enters steam generator 3 to absorb heat and vaporize; the second stream flows through throttle valve 6 to reduce pressure and temperature and enter low-temperature heat exchanger 7. The circulating working fluid flows through low-temperature heat exchanger 7 to absorb heat and evaporate or to be further superheated, and then enters compressor 2. 1. Pressure and temperature increase: External working steam enters the second ejector 8 through the high-pressure steam inlet. The external heated medium flows through the heater 4, absorbs heat and vaporizes, and is then supplied to the second ejector 8. The working steam flows through the nozzle, where its pressure is reduced and its speed is increased to form a low-pressure system. The steam generated by the heater 4 is drawn into the low-pressure zone of the second ejector 8. After the two steam streams are mixed, they flow through the diffuser, where their speed is reduced and their pressure is increased to form medium-pressure steam, which is then supplied to the outside. The external system provides power through the compressor 1 and provides working steam through the second ejector 8. The high-temperature heat medium provides the driving heat load through the steam generator 3, and the low-temperature heat medium provides the low-temperature heat load through the low-temperature heat exchanger 7. The steam user obtains medium-pressure steam (user steam), forming a steam generation system based on a compression-ejector heat pump.

[0034] Figure 2 The steam generation system based on a compression-ejector heat pump shown is implemented as follows:

[0035] (1) Structurally, it mainly consists of a compressor, an ejector, a steam generator, a heater, a booster pump, a throttle valve, a low-temperature heat exchanger, a second ejector, and a second booster pump; the low-temperature heat exchanger 7 has a circulating working fluid channel connected to the compressor 1, and the compressor 1 also has a circulating working fluid channel connected to the low-pressure steam inlet of the ejector 2; the steam generator 3 has a working steam channel connected to the high-pressure steam inlet of the ejector 2, and the ejector 2 also has a medium-pressure steam channel connected to the heater 4; the heater 4 also has a condensate pipeline connected to the steam generator 3 via the booster pump 5. The heater 4 also has a condensate pipeline connected to the low-temperature heat exchanger 7 via a throttling valve 6. An external liquid channel connects to the steam generator 3 via the second booster pump 9. The steam generator 3 then has a working steam channel connected to the high-pressure steam inlet of the second ejector 8. An external heated medium channel connects to the low-pressure steam inlet of the second ejector 8 via the heater 4. The second ejector 8 also has a user steam channel connected to the outside. The steam generator 3 also has a high-temperature heat medium channel connected to the outside, and the low-temperature heat exchanger 7 also has a low-temperature heat medium channel connected to the outside.

[0036] (2) In terms of process, with Figure 1Compared to the steam generation system based on the compression-ejector heat pump shown, the difference is that: the external liquid flows through the second booster pump 9 to be pressurized, flows through the steam generator 3 to absorb heat and vaporize, and is then provided to the second ejector 8 as working steam, thus forming a steam generation system based on the compression-ejector heat pump.

[0037] Figure 3 The steam generation system based on a compression-ejector heat pump shown is implemented as follows:

[0038] (1) Structurally, it mainly consists of a compressor, ejector, steam generator, heater, booster pump, throttle valve, low-temperature heat exchanger, second ejector, second booster pump, and second steam generator; the low-temperature heat exchanger 7 has a circulating working fluid channel connected to the compressor 1, and the compressor 1 also has a circulating working fluid channel connected to the low-pressure steam inlet of the ejector 2; the steam generator 3 has a working steam channel connected to the high-pressure steam inlet of the ejector 2, and the ejector 2 also has a medium-pressure steam channel connected to the heater 4; the heater 4 also has a condensate pipeline connected to the steam generator 3 via the booster pump 5; the heater... 4. The condensate pipeline is connected to the low-temperature heat exchanger 7 via the throttle valve 6. An external liquid channel is connected to the second steam generator 10 via the second booster pump 9. The second steam generator 10 also has a working steam channel connected to the high-pressure steam inlet of the second ejector 8. An external heated medium channel is connected to the low-pressure steam inlet of the second ejector 8 via the heater 4. The second ejector 8 also has a user steam channel connected to the outside. The steam generator 3 and the second steam generator 10 also have high-temperature heat medium channels connected to the outside, and the low-temperature heat exchanger 7 also has a low-temperature heat medium channel connected to the outside.

[0039] (2) In terms of process, with Figure 1 Compared to the steam generation system based on the compression-ejector heat pump shown, the difference is that: the external liquid is pressurized by the second booster pump 9, and then vaporized by the second steam generator 10 after absorbing heat. It is then supplied to the second ejector 8 as working steam. The high-temperature heat medium provides the driving heat load through the second steam generator 10, thus forming a steam generation system based on the compression-ejector heat pump.

[0040] Figure 4 The steam generation system based on a compression-ejector heat pump shown is implemented as follows:

[0041] (1) Structurally, it is mainly composed of a compressor, an ejector, a heater, a throttling valve, a low-temperature heat exchanger, and a second ejector; the low-temperature heat exchanger 7 has a circulating working fluid channel connected to the compressor 1, the compressor 1 also has a circulating working fluid channel connected to the low-pressure steam inlet of the ejector 2, an external working steam channel connected to the high-pressure steam inlet of the ejector 2, the ejector 2 also has a medium-pressure steam channel connected to the heater 4, the heater 4 also has a condensate pipeline connected to the outside, the heater 4 also has a condensate pipeline connected to the low-temperature heat exchanger 7 via the throttling valve 6, an external working steam channel connected to the high-pressure steam inlet of the second ejector 8, an external heated medium channel connected to the low-pressure steam inlet of the second ejector 8 via the heater 4, the second ejector 8 also has a user steam channel connected to the outside; the low-temperature heat exchanger 7 also has a low-temperature heat medium channel connected to the outside.

[0042] (2) In terms of process, with Figure 1 Compared to the steam generation system based on the compression-ejector heat pump shown, the difference is that the condensate discharged from the heater 4 is divided into two paths - the first path is discharged to the outside, and the second path flows through the throttling valve 6 to reduce pressure and temperature before entering the low-temperature heat exchanger 7 to absorb heat and vaporize; working steam is supplied to the ejector 2 and the second ejector 8 respectively from the outside to form a steam generation system based on the compression-ejector heat pump.

[0043] Figure 5 The steam generation system based on a compression-ejector heat pump shown is implemented as follows:

[0044] (1) Structurally, in Figure 1 In the steam generation system based on the compression-ejection heat pump shown, a regenerator 11 is added. The condensate pipeline of the heater 4 is connected to the low-temperature heat exchanger 7 via the throttle valve 6. The condensate pipeline of the heater 4 is connected to the low-temperature heat exchanger 7 via the regenerator 11 and the throttle valve 6. The circulating working fluid channel of the low-temperature heat exchanger 7 is connected to the compressor 1. The circulating working fluid channel of the low-temperature heat exchanger 7 is connected to the compressor 1 via the regenerator 11.

[0045] (2) In terms of process, with Figure 1 Compared to the steam generation system based on the compression-ejector heat pump shown, the difference is that the second condensate discharged from the heater 4 flows through the regenerator 11 to release heat and cool down, flows through the throttling valve 6 to reduce pressure and temperature, flows through the low-temperature heat exchanger 7 to absorb heat and evaporate, flows through the regenerator 11 to absorb heat and increase temperature, and then enters the compressor 1 to increase pressure and temperature, forming a steam generation system based on the compression-ejector heat pump.

[0046] Figure 6 The steam generation system based on a compression-ejector heat pump shown is implemented as follows:

[0047] (1) Structurally, in Figure 1In the steam generation system based on a compression-ejector heat pump shown, a regenerator, an expander, and a second heater are added. The compressor 1, which has a circulating working fluid channel connected to the low-pressure steam inlet of the ejector 2, is adjusted so that the circulating working fluid channel of the compressor 1, after passing through the second heater 13, splits into two paths—the first path connects to the low-pressure steam inlet of the ejector 2, and the second path connects to the expander 12. The expander 12 also has a circulating working fluid channel connected to the regenerator 11, and then connected to the compressor 1 through an intermediate port. The heater 4, which has a condensate pipeline connected to the low-temperature heat exchanger 7 through a throttling valve 6, is adjusted so that the heater 4 has a condensate or wet steam pipeline connected to the low-temperature heat exchanger 7 through the regenerator 11 and the throttling valve 6. The external channel for the heated medium, which passes through the heater 4 and then connects to the low-pressure steam inlet of the second ejector 8, is adjusted so that the external channel for the heated medium passes through the second heater 13 and the heater 4, and then connects to the low-pressure steam inlet of the second ejector 8.

[0048] (2) In terms of process, with Figure 1 Compared to the compression-ejector heat pump shown, the difference lies in the following: the circulating working fluid discharged from the compressor 1 flows through the second heater 13 to release heat and cool down, and then splits into two paths—the first path is supplied to the ejector 2, and the second path flows through the expander 12 to reduce pressure and do work, flows through the regenerator 11 to absorb heat and heat up, and enters the compressor 1 through the intermediate air inlet port to increase pressure and temperature; the condensate or wet steam discharged from the heater 4 is split into two paths—the first path flows through the booster pump 5 to increase pressure and enters the steam generator 3 to absorb heat and vaporize, and the second path flows through the regenerator 11 to release heat, flows through the throttle valve 6 to reduce pressure and temperature, flows through the low-temperature heat exchanger 7 to absorb heat and evaporate or to be further superheated, and then enters the compressor 1 to increase pressure and temperature; the heated medium flows through the second heater 13 and the heater 4 to gradually absorb heat and vaporize before being supplied to the second ejector 8; the expander 12 and the external environment jointly provide power to the compressor 1, forming a compression-ejector heat pump.

[0049] Figure 7 The compression-ejection heat pump shown is implemented as follows:

[0050] (1) Structurally, in Figure 1In the compression-ejector heat pump shown, a regenerator, an expander, a second heater, and a second regenerator are added. The compressor 1, which has a circulating working fluid channel connecting to the low-pressure steam inlet of the ejector 2, is adjusted so that the circulating working fluid channel of the compressor 1, after passing through the second heater 13, splits into two paths—the first path connects to the low-pressure steam inlet of the ejector 2, and the second path connects to the expander 12. The expander 12 also has a circulating working fluid channel connecting to the regenerator 11, and then connects to the compressor 1 through an intermediate port. The heater 4 has a condensate pipeline connected to the low-temperature heat exchanger 7 via a throttling valve 6. The system is adjusted so that the condensate or wet steam pipeline of the heater 4 is connected to the low-temperature heat exchanger 7 via the regenerator 11, the second regenerator 14 and the throttle valve 6. The low-temperature heat exchanger 7 is connected to the compressor 1 via the circulating working fluid channel. The system is adjusted so that the low-temperature heat exchanger 7 is connected to the compressor 1 via the second regenerator 14. The system is adjusted so that the external heating medium channel is connected to the low-pressure steam inlet of the second ejector 8 via the heater 4. The system is adjusted so that the external heating medium channel is connected to the low-pressure steam inlet of the second ejector 8 via the second heater 13 and the heater 4.

[0051] (2) In terms of process, with Figure 1 Compared to the compression-ejector heat pump shown, the difference lies in the following: the circulating working fluid discharged from the compressor 1 flows through the second heater 13 to release heat and cool down, and then splits into two paths—the first path is supplied to the ejector 2, and the second path flows through the expander 12 to reduce pressure and do work, flows through the regenerator 11 to absorb heat and heat up, and enters the compressor 1 through the intermediate air inlet port to increase pressure and temperature; the condensate or wet steam discharged from the heater 4 is split into two paths—the first path flows through the booster pump 5 to increase pressure and enter the steam generator 3 to absorb heat and vaporize, and the second path flows through the regenerator 11 and the second regenerator 14 to gradually release heat, flows through the throttling valve 6 to reduce pressure and cool down, flows through the low-temperature heat exchanger 7 to absorb heat and evaporate or further superheat, flows through the second regenerator 14 to absorb heat and heat up, and then enters the compressor 1 to increase pressure and temperature; the heated medium flows through the second heater 13 and the heater 4 to gradually absorb heat and vaporize before being supplied to the second ejector 8; the expander 12 and the external environment jointly provide power to the compressor 1, forming a compression-ejector heat pump.

[0052] Figure 8 The compression-ejection heat pump shown is implemented as follows:

[0053] (1) Structurally, in Figure 1 In the compression-ejection heat pump shown, a two-phase expander 15 is added and replaces the throttle valve 6. The two-phase expander 15 is connected to the compressor 1 and transmits power.

[0054] (2) In terms of process, with Figure 1Compared to the compression-ejection heat pump shown, the difference is that the second condensate discharged from the heater 4 flows through the two-phase expander 15 to reduce pressure and do work, and then enters the low-temperature heat exchanger 7; the mechanical energy output by the two-phase expander 15 provides power to the compressor 1, forming a compression-ejection heat pump.

[0055] Figure 9 The compression-ejection heat pump shown is implemented as follows:

[0056] (1) Structurally, in Figure 1 In the compression-ejection heat pump shown, a nozzle 16 is added and replaces the throttle valve 6, and a dual-energy compressor 17 is added and replaces the compressor 1.

[0057] (2) In terms of process, with Figure 1 Compared to the compression-ejection heat pump shown, the difference is that the second condensate discharged from the heater 4 flows through the nozzle 16 to reduce pressure and increase speed, flows through the low-temperature heat exchanger 7 to absorb heat and vaporize or be further superheated, and then enters the dual-energy compressor 17 to increase pressure and temperature and reduce speed, thus forming a compression-ejection heat pump.

[0058] Figure 10 The compression-ejection heat pump shown is implemented as follows:

[0059] (1) Structurally, in Figure 7 In the compression-ejection heat pump shown, a nozzle 16 is added and replaces the throttle valve 6, and a dual-energy compressor 17 is added and replaces the compressor 1.

[0060] (2) In terms of process, with Figure 7 Compared to the compression-ejection heat pump shown, the difference is that the second condensate discharged from the heater 4 flows through the regenerator 11 and the second regenerator 14 to gradually release heat and cool down, flows through the nozzle 16 to reduce pressure and increase speed, flows through the low-temperature heat exchanger 7 to absorb heat and vaporize or be further superheated, flows through the second regenerator 14 to absorb heat and increase temperature, and then enters the dual-energy compressor 17 to increase pressure and temperature and reduce speed, thus forming a compression-ejection heat pump.

[0061] Figure 11 The compression-ejection heat pump shown is implemented as follows:

[0062] (1) Structurally, in Figure 7 In the compression-ejection heat pump shown, a nozzle 16 is added and replaces the throttle valve 6, a dual-energy compressor 17 is added and replaces the compressor 1, and an expander accelerator 18 is added and replaces the expander 12.

[0063] (2) In terms of process, with Figure 7Compared to the compression-ejection heat pump shown, the difference lies in the following: the second circulating working fluid discharged from the second heater 13 enters the expander accelerator 18 to reduce pressure, perform work, and increase speed. It then flows through the regenerator 11 to absorb heat and increase temperature, and then enters the dual-energy compressor 17 to increase pressure, increase temperature, and decrease speed. The second condensate discharged from the heater 4 flows through the regenerator 11 and the second regenerator 14 to gradually release heat and decrease temperature. It then flows through the nozzle 16 to reduce pressure and increase speed, flows through the low-temperature heat exchanger 7 to absorb heat and vaporize or be further superheated, flows through the second regenerator 14 to absorb heat and increase temperature, and then enters the dual-energy compressor 17 to increase pressure, increase temperature, and decrease speed, thus forming a compression-ejection heat pump.

[0064] The effects achievable by this invention—the steam generation system based on a compression-ejector heat pump proposed in this invention has the following effects and advantages:

[0065] (1) A new technology was created that combines thermal energy and mechanical energy for refrigeration / heating and efficient steam production.

[0066] (2) The compressor and the ejector work together to increase the pressure of the circulating working fluid, which significantly improves the heating parameters or reduces the compressor's pressure increase share.

[0067] (3) It is conducive to the efficient and high-value utilization of high-temperature associated heat in industrial production.

[0068] (4) High-temperature heating or deep cooling can be achieved while maintaining the rationality of the device performance index, resulting in high energy utilization.

[0069] (5) For constant temperature heating demand or high temperature heating demand, it can make full use of constant temperature low temperature heat resources and achieve rationalization of performance index.

[0070] (6) It can achieve simultaneous supply of cooling and steam over a wide range, thereby improving the efficiency and value of driving energy utilization.

[0071] (7) The compressor and the injector work together to increase the pressure of the circulating working fluid, which reduces the size of the compressor; the process is reasonable, the structure is simple, and the system economy is significantly improved.

[0072] (8) Provide reasonable regeneration technology to effectively improve the coordination of the device in terms of load, performance index, and pressure ratio.

[0073] (9) Provides a variety of specific technical solutions, which is conducive to improving the level of rational energy utilization and expanding the application scope and value of steam generation systems based on compression-jet heat pumps.

Claims

1. A steam generation system based on a compression-ejector heat pump mainly consists of a compressor, an ejector, a steam generator, a heater, a booster pump, a throttle valve, a low-temperature heat exchanger, and a second ejector. The low-temperature heat exchanger (7) has a circulating working fluid channel connected to the compressor (1), and the compressor (1) also has a circulating working fluid channel connected to the low-pressure steam inlet of the ejector (2). The steam generator (3) has a working steam channel connected to the high-pressure steam inlet of the ejector (2), and the ejector (2) also has a medium-pressure steam channel connected to the heater (4). The heater (4) also has a condensate pipeline connected to the booster pump (5) via a condensate pipeline. The steam generator (3) is connected, the heater (4) and the condensate pipeline are connected to the low-temperature heat exchanger (7) via the throttle valve (6), there is an external working steam channel connected to the high-pressure steam inlet of the second ejector (8), there is an external heated medium channel connected to the low-pressure steam inlet of the second ejector (8) via the heater (4), the second ejector (8) also has a user steam channel connected to the outside; the steam generator (3) also has a high-temperature heat medium channel connected to the outside, the low-temperature heat exchanger (7) also has a low-temperature heat medium channel connected to the outside, forming a steam generation system based on the compression-ejection heat pump.

2. A steam generation system based on a compression-ejector heat pump mainly consists of a compressor, an ejector, a steam generator, a heater, a booster pump, a throttle valve, a low-temperature heat exchanger, a second ejector, and a second booster pump. The low-temperature heat exchanger (7) has a circulating working fluid channel connected to the compressor (1), and the compressor (1) also has a circulating working fluid channel connected to the low-pressure steam inlet of the ejector (2). The steam generator (3) has a working steam channel connected to the high-pressure steam inlet of the ejector (2), and the ejector (2) also has a medium-pressure steam channel connected to the heater (4). The heater (4) also has a condensate pipeline connected to the steam generator (3) via the booster pump (5). 4) There is also a condensate pipeline connected to the low-temperature heat exchanger (7) via a throttle valve (6), and an external liquid channel connected to the steam generator (3) via the second booster pump (9). The steam generator (3) then has a working steam channel connected to the high-pressure steam inlet of the second ejector (8). There is an external heated medium channel connected to the low-pressure steam inlet of the second ejector (8) via the heater (4). The second ejector (8) also has a user steam channel connected to the outside. The steam generator (3) also has a high-temperature heat medium channel connected to the outside, and the low-temperature heat exchanger (7) also has a low-temperature heat medium channel connected to the outside, forming a steam generation system based on a compression-ejector heat pump.

3. A steam generation system based on a compression-ejector heat pump mainly consists of a compressor, an ejector, a steam generator, a heater, a booster pump, a throttle valve, a low-temperature heat exchanger, a second ejector, a second booster pump, and a second steam generator. The low-temperature heat exchanger (7) has a circulating working fluid channel connected to the compressor (1), and the compressor (1) also has a circulating working fluid channel connected to the low-pressure steam inlet of the ejector (2). The steam generator (3) has a working steam channel connected to the high-pressure steam inlet of the ejector (2), and the ejector (2) also has a medium-pressure steam channel connected to the heater (4). The heater (4) also has a condensate pipeline connected to the steam generator (3) via the booster pump (5). The heater (4) also has a condensate pipeline connected to the steam generator (3). The condensate pipeline is connected to the low-temperature heat exchanger (7) via the throttle valve (6). There is an external liquid channel that is connected to the second steam generator (10) via the second booster pump (9). The second steam generator (10) also has a working steam channel that is connected to the high-pressure steam inlet of the second ejector (8). There is an external heated medium channel that is connected to the low-pressure steam inlet of the second ejector (8) via the heater (4). The second ejector (8) also has a user steam channel that is connected to the outside. The steam generator (3) and the second steam generator (10) also have high-temperature heat medium channels that are connected to the outside. The low-temperature heat exchanger (7) also has a low-temperature heat medium channel that is connected to the outside, forming a steam generation system based on a compression-ejector heat pump.

4. A steam generation system based on a compression-ejector heat pump mainly consists of a compressor, an ejector, a heater, a throttle valve, a low-temperature heat exchanger, and a second ejector. The low-temperature heat exchanger (7) has a circulating working fluid channel connected to the compressor (1). The compressor (1) also has a circulating working fluid channel connected to the low-pressure steam inlet of the ejector (2). The external working steam channel connects to the high-pressure steam inlet of the ejector (2). The ejector (2) also has a medium-pressure steam channel connected to the heater (4). The heater (4) also has a condensate pipeline connected to the outside. The heater (4) also has a condensate pipeline connected to the low-temperature heat exchanger (7) via a throttle valve (6). The external working steam channel connects to the high-pressure steam inlet of the second ejector (8). The external heated medium channel connects to the low-pressure steam inlet of the second ejector (8) after passing through the heater (4). The second ejector (8) also has a user steam channel connected to the outside. The low-temperature heat exchanger (7) also has a low-temperature heat medium channel connected to the outside, forming a steam generation system based on a compression-ejector heat pump.

5. A steam generation system based on a compression-ejector heat pump is a steam generation system based on a compression-ejector heat pump as described in any of claims 1-4, wherein a regenerator (11) is added, the condensate pipe of the heater (4) is connected to the low-temperature heat exchanger (7) via a throttle valve (6) and the condensate pipe of the heater (4) is connected to the low-temperature heat exchanger (7) via the regenerator (11) and the throttle valve (6), and the circulating working fluid channel of the low-temperature heat exchanger (7) is connected to the compressor (1) and the circulating working fluid channel of the low-temperature heat exchanger (7) is connected to the compressor (1) via the regenerator (11), thereby forming a steam generation system based on a compression-ejector heat pump.

6. A steam generation system based on a compression-ejector heat pump, wherein any of the steam generation systems based on a compression-ejector heat pump as described in claims 1-4 is modified by adding a regenerator, an expander, and a second heater. The compressor (1) is connected to the low-pressure steam inlet of the ejector (2) via a circulating working fluid channel. The working fluid channel of the compressor (1) is then divided into two paths after passing through the second heater (13). The first path is connected to the low-pressure steam inlet of the ejector (2), and the second path is connected to the expander (12). The expander (12) also has a circulating working fluid channel connected to the regenerator (11), which then passes through an intermediate end. The outlet is connected to the compressor (1). The condensate pipeline of the heater (4) is connected to the low-temperature heat exchanger (7) through the throttle valve (6). The condensate or wet steam pipeline of the heater (4) is connected to the low-temperature heat exchanger (7) through the regenerator (11) and the throttle valve (6). The external heating medium channel is connected to the low-pressure steam inlet of the second ejector (8) after passing through the heater (4). The external heating medium channel is connected to the low-pressure steam inlet of the second ejector (8) after passing through the second heater (13) and the heater (4). A steam generation system based on the compression-ejection heat pump is formed.

7. A steam generation system based on a compression-ejector heat pump is a steam generation system based on a compression-ejector heat pump as described in any of claims 1-4, wherein a regenerator, an expander, a second heater, and a second regenerator are added. The compressor (1) is connected to the low-pressure steam inlet of the ejector (2) via a circulating working fluid channel. The working fluid channel of the compressor (1) is adjusted so that after passing through the second heater (13), it is divided into two paths—the first path is connected to the low-pressure steam inlet of the ejector (2) and the second path is connected to the expander (12). The expander (12) also has a circulating working fluid channel connected to the regenerator (11) and then connected to the compressor (1) through an intermediate port. The heater (4) has a condensate pipeline connected to the low-temperature... The heat exchanger (7) is connected to the heater (4) via a condensate or wet steam pipeline through the regenerator (11), the second regenerator (14) and the throttle valve (6) to connect with the low-temperature heat exchanger (7). The low-temperature heat exchanger (7) is connected to the compressor (1) via a circulating working fluid channel through the second regenerator (14) to connect with the compressor (1). The external heating medium channel is connected to the low-pressure steam inlet of the second ejector (8) after passing through the heater (4) to connect to the low-pressure steam inlet of the second ejector (8) after passing through the second heater (13) and the heater (4), thus forming a steam generation system based on a compression-ejection heat pump.

8. A steam generation system based on a compression-ejector heat pump is a steam generation system based on a compression-ejector heat pump according to any one of the claims 1-7, wherein a two-phase expander (15) is added and a throttle valve (6) is replaced, the two-phase expander (15) is connected to the compressor (1) and transmits power, thereby forming a steam generation system based on a compression-ejector heat pump.

9. A steam generation system based on a compression-ejector heat pump is formed by adding a nozzle (16) and replacing the throttle valve (6) to any of the steam generation systems based on a compression-ejector heat pump as described in claims 1-7, and adding a dual-energy compressor (17) and replacing the compressor (1) to form a steam generation system based on a compression-ejector heat pump.

10. A steam generation system based on a compression-ejector heat pump is formed by adding a nozzle (16) to replace the throttle valve (6), adding a dual-energy compressor (17) to replace the compressor (1), and adding an expander (18) to replace the expander (12) in any of the steam generation systems based on a compression-ejector heat pump as described in claims 6-7.

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