Steam generation system based on third-class injection-absorption heat pump

Abstract

The invention provides a steam generation system based on a third-class injection-absorption heat pump, and belongs to the technical field of heat pumps. A low-temperature generator, a solution pump, a solution heat exchanger, a second solution heat exchanger, a high-temperature generator and an absorber form a solution loop, the low-temperature generator is communicated with an evaporator through a low-temperature condenser and a low-pressure pump, the high-temperature generator is communicated with a low-pressure steam inlet of an ejector, the ejector is communicated with a high-temperature condenser, and the high-temperature condenser is communicated with the evaporator through a throttling valve. The evaporator is communicated with the absorber, the high-temperature condenser is communicated with the steam generator through the high-pressure pump, the steam generator is communicated with a high-pressure steam inlet of the ejector, a heated medium channel is arranged outside to be communicated with a low-pressure steam inlet of the second ejector through the absorber and the high-temperature condenser, and a working steam channel is arranged outside to be communicated with a high-pressure steam inlet of the second ejector. The second ejector communicates with the outside through a user steam channel. The high-temperature generator, the steam generator, the low-temperature generator, the evaporator and the low-temperature condenser communicate with the outside through heat source medium channels.

Description

Technical fields:

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

[0002] People need to use energy for cooling and efficient heating, which requires advanced heat pump technology; for variable-temperature heat resources, segmented utilization is an effective means to improve their utilization efficiency and value.

[0003] People's lives and production processes require steam with different parameters. 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, adaptability, and utilization level of heat resources of heat pumps need to be comprehensively considered.

[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] Absorption heat pump technology has the advantages of low cost and direct use of thermal energy as a driving energy source. However, when users need steam, its steam production capacity is greatly limited due to the constraints of the solution, refrigerant medium, and heat source properties. For example, when the temperature of the medium-temperature heat resource is low and the user requires high-pressure steam, the third-generation absorption heat pump using lithium bromide aqueous solution as the working medium often fails to directly produce suitable steam.

[0006] Based on the principles of simplicity, initiative, safety, and high efficiency in energy utilization for heating, this invention proposes a steam generation system based on a third-type jet-absorption heat pump, which features technological integration, a reasonable process, a simple structure, low manufacturing cost, a wide operating range, and rationalized performance index. Summary of the Invention:

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

[0008] 1. A steam generation system based on a third-type jet-absorption heat pump mainly consists of a low-temperature generator, a solution pump, a solution heat exchanger, a second solution heat exchanger, a high-temperature generator, an absorber, a low-temperature condenser, a low-pressure pump, an evaporator, an ejector, a high-temperature condenser, a throttling valve, a high-pressure pump, a steam generator, and a second ejector. The low-temperature generator has a concentrated solution pipeline connected to the high-temperature generator via the solution pump, the solution heat exchanger, and the second solution heat exchanger. The high-temperature generator also has a concentrated solution pipeline connected to the absorber via the second solution heat exchanger. The absorber also has a dilute solution pipeline connected to the low-temperature generator via the solution heat exchanger. The low-temperature generator also has a refrigerant vapor channel connected to the low-temperature condenser. The low-temperature condenser also has a condensate pipeline connected to the evaporator via the low-pressure pump. The high-temperature generator also has a refrigerant vapor channel connected to the low-pressure steam inlet of the ejector. The ejector also has a medium-pressure... The refrigerant vapor passage is connected to the high-temperature condenser. The high-temperature condenser also has a condensate pipeline connected to the evaporator via a throttling valve. The evaporator also has a refrigerant vapor passage connected to the absorber. The high-temperature condenser also has a condensate pipeline connected to the steam generator via a high-pressure pump. The steam generator also has a refrigerant vapor passage connected to the high-pressure steam inlet of the ejector. Externally, there is a heated medium passage that connects to the low-pressure steam inlet of the second ejector after passing through the absorber and the high-temperature condenser. Externally, there is a working steam passage connected to the high-pressure steam inlet of the second ejector. The second ejector also has a user steam passage connected to the outside. The high-temperature generator and the steam generator also have high-temperature heat medium passages connected to the outside. The low-temperature generator and the evaporator also have low-temperature heat medium passages connected to the outside. The low-temperature condenser also has a cooling medium passage connected to the outside, forming a steam generation system based on a third-type jet-absorption heat pump.

[0009] 2. A steam generation system based on a third type of jet-absorption heat pump is a steam generation system based on a third type of jet-absorption heat pump described in item 1, wherein the working steam channel externally connected to the high-pressure steam inlet of the second ejector is eliminated, a second high-pressure pump is added, an external liquid medium channel is connected to the steam generator via the second high-pressure pump, and the steam generator is provided with a refrigerant steam channel connected to the high-pressure steam inlet of the second ejector, thus forming a steam generation system based on a third type of jet-absorption heat pump.

[0010] 3. A steam generation system based on a third type of jet-absorption heat pump is a steam generation system based on a third type of jet-absorption heat pump described in item 1, wherein the working steam channel externally connected to the high-pressure steam inlet of the second ejector is eliminated, and a second high-pressure pump and a second steam generator are added. An external liquid medium channel is connected to the second steam generator via the second high-pressure pump. The second steam generator also has a high-pressure steam channel connected to the high-pressure steam inlet of the second ejector, and a high-temperature heat medium channel connected to the outside, thus forming a steam generation system based on a third type of jet-absorption heat pump.

[0011] 4. A steam generation system based on a third-type jet-absorption heat pump is formed by eliminating the high-pressure pump and the condensate pipeline connecting the high-pressure pump to the steam generator in any of the steam generation systems described in items 1-3. This eliminates the steam generator and its external high-temperature heat medium channel and the refrigerant vapor channel connecting to the high-pressure steam inlet of the ejector. An external working steam channel is added to connect to the high-pressure steam inlet of the ejector, and a condensate pipeline is added to the high-temperature condenser to connect to the outside, thus forming a steam generation system based on a third-type jet-absorption heat pump.

[0012] 5. A steam generation system based on a third-type jet-absorption heat pump is formed by adjusting the connection between the low-temperature generator (with a concentrated solution pipeline connected to the high-temperature generator via a solution pump, a solution heat exchanger, and a second solution heat exchanger) and the absorber (with a concentrated solution pipeline connected to the absorber via a second solution pump and a second solution heat exchanger), and the high-temperature generator (with a dilute solution pipeline connected to the high-temperature generator via a solution pump and a solution heat exchanger), and the connection between the high-temperature generator (with a concentrated solution pipeline connected to the absorber via a second solution heat exchanger) and the low-temperature generator (with a concentrated solution pipeline connected to the low-temperature generator via a solution heat exchanger and a second solution heat exchanger).

[0013] 6. A steam generation system based on a third-type jet-absorption heat pump, wherein in any of the steam generation systems based on a third-type jet-absorption heat pump described in items 1-4, the low-temperature generator is connected to the high-temperature generator via a concentrated solution pipeline through a solution pump, a solution heat exchanger, and a second solution heat exchanger. This is adjusted so that the low-temperature generator has a concentrated solution pipeline connected to the absorber via a second solution pump and a solution heat exchanger; the absorber also has a dilute solution pipeline connected to the second absorber via a solution heat exchanger; and the second absorber further has a dilute solution pipeline connected to the high-temperature generator via a solution pump and a second solution heat exchanger. The high-temperature generator, which has a concentrated solution pipeline connected to the absorber via the second solution heat exchanger, is adjusted to have a concentrated solution pipeline connected to the low-temperature generator via the second solution heat exchanger. The low-pressure pump and low-temperature condenser are eliminated, as are the low-temperature condenser and its external cooling medium channel and the condensate pipeline connected to the evaporator via the low-pressure pump. The low-temperature generator, which previously had a refrigerant vapor channel connected to the low-temperature condenser, is now connected to the second absorber via a refrigerant vapor channel. The second absorber also has a cooling medium channel connected to the outside, forming a steam generation system based on a third-type jet-absorption heat pump.

[0014] 7. A steam generation system based on a third-type jet-absorption heat pump is formed by adding a compressor to any of the steam generation systems based on a third-type jet-absorption heat pump described in items 1-6, and adjusting the connection between the refrigerant vapor channel of the high-temperature generator and the low-pressure steam inlet of the ejector to a connection between the refrigerant vapor channel of the high-temperature generator and the low-pressure steam inlet of the ejector via the compressor, thereby forming a steam generation system based on a third-type jet-absorption heat pump.

[0015] 8. A steam generation system based on a third type of jet-absorption heat pump is formed by adding a compressor to any of the steam generation systems based on a third type of jet-absorption heat pump described in items 1-6, and adjusting the connection between the refrigerant vapor channel of the evaporator and the absorber to be such that the refrigerant vapor channel of the evaporator is connected to the absorber via the compressor, thereby forming a steam generation system based on a third type of jet-absorption heat pump.

[0016] 9. A steam generation system based on a third type of jet-absorption heat pump is formed by adding a two-phase expander and replacing the throttle valve to any of the steam generation systems based on a third type of jet-absorption heat pump described in items 1-8, thereby forming a steam generation system based on a third type of jet-absorption heat pump.

[0017] 10. A steam generation system based on a third-type jet-absorption heat pump is formed by adding a nozzle and replacing the throttle valve in any of the steam generation systems based on a third-type jet-absorption heat pump described in items 1-7, adding a diffuser tube, and adjusting the connection between the refrigerant vapor channel of the evaporator and the absorber to be such that the refrigerant vapor channel of the evaporator is connected to the absorber via the diffuser tube, thus forming a steam generation system based on a third-type jet-absorption heat pump.

[0018] 11. A steam generation system based on a third-type jet-absorption heat pump is formed by adding a nozzle and replacing the throttle valve in any of the steam generation systems based on a third-type jet-absorption heat pump described in items 1-7, adding a dual-energy compressor, and adjusting the connection between the evaporator refrigerant vapor channel and the absorber to be such that the evaporator refrigerant vapor channel is connected to the absorber via the dual-energy compressor, thus forming a steam generation system based on a third-type jet-absorption heat pump.

[0019] 12. A steam generation system based on a third type of jet-absorption heat pump is formed by adjusting the external heating medium channel, which passes through the absorber and the high-temperature condenser and is then connected to the low-pressure steam inlet of the second ejector, to form a steam generation system based on a third type of jet-absorption heat pump. Attached image description:

[0020] Figure 1 This is a schematic diagram of the first structure and process of a steam generation system based on a third type of jet-absorption heat pump provided by the present invention.

[0021] Figure 2 This is a schematic diagram of the second structure and process of a steam generation system based on a third type of jet-absorption heat pump provided by the present invention.

[0022] Figure 3 This is a schematic diagram of the third structure and process of a steam generation system based on a third type of jet-absorption heat pump provided by the present invention.

[0023] Figure 4 This is a schematic diagram of the fourth structure and process of a steam generation system based on a third type of jet-absorption heat pump provided by the present invention.

[0024] Figure 5 This is a schematic diagram of the fifth structure and process of a steam generation system based on a third type of jet-absorption heat pump provided by the present invention.

[0025] Figure 6 This is a schematic diagram of the sixth structure and process of a steam generation system based on a third type of jet-absorption heat pump provided by the present invention.

[0026] Figure 7 This is a schematic diagram of the seventh structure and process of a steam generation system based on a third type of jet-absorption heat pump provided by the present invention.

[0027] Figure 8 This is a schematic diagram of the eighth structure and process of a steam generation system based on a third type of jet-absorption heat pump provided by the present invention.

[0028] Figure 9 This is a schematic diagram of the ninth structure and process of a steam generation system based on a third type of jet-absorption heat pump provided by the present invention.

[0029] Figure 10 This is a schematic diagram of the tenth structure and process of a steam generation system based on a third type of jet-absorption heat pump provided by the present invention.

[0030] Figure 11 This is a schematic diagram of the 11th structure and process of a steam generation system based on a third type of jet-absorption heat pump provided by the present invention.

[0031] Figure 12 This is a schematic diagram of the 12th structure and process of a steam generation system based on a third type of jet-absorption heat pump provided by the present invention.

[0032] Figure 13This is a schematic diagram of the 13th structure and process of a steam generation system based on a third type of jet-absorption heat pump provided by the present invention.

[0033] In the diagram, 1-low temperature generator, 2-solution pump, 3-solution heat exchanger, 4-second solution heat exchanger, 5-high temperature generator, 6-absorber, 7-low temperature condenser, 8-low pressure pump, 9-evaporator, 10-ejector, 11-high temperature condenser, 12-throttle valve, 13-high pressure pump, 14-steam generator, 15-second ejector, 16-second high pressure pump, 17-second steam generator, 18-second solution pump, 19-second absorber, A-compressor, B-two-phase expander, C-nozzle, D-diffuser, E-dual-energy compressor. Detailed implementation method:

[0034] First, it should be noted that the structure and process are not repeated unless necessary; obvious processes are not described. The invention will now be described in detail with reference to the accompanying drawings and examples.

[0035] Figure 1 The steam generation system based on the third type of jet-absorption heat pump shown is implemented as follows:

[0036] (1) Structurally, it mainly consists of a low-temperature generator, a solution pump, a solution heat exchanger, a second solution heat exchanger, a high-temperature generator, an absorber, a low-temperature condenser, a low-pressure pump, an evaporator, an ejector, a high-temperature condenser, a throttle valve, a high-pressure pump, a steam generator, and a second ejector. The low-temperature generator 1 has a concentrated solution pipeline connected to the high-temperature generator 5 via the solution pump 2, the solution heat exchanger 3, and the second solution heat exchanger 4. The high-temperature generator 5 also has a concentrated solution pipeline connected to the absorber 6 via the second solution heat exchanger 4. The absorber 6 also has a dilute solution pipeline connected to the low-temperature generator 1 via the solution heat exchanger 3. The low-temperature generator 1 also has a refrigerant vapor channel connected to the low-temperature condenser 7. The low-temperature condenser 7 also has a condensate pipeline connected to the evaporator 9 via the low-pressure pump 8. The high-temperature generator 5 also has a refrigerant vapor channel connected to the low-pressure steam inlet of the ejector 10. The ejector 10 also has a medium-pressure refrigerant... The steam passage is connected to the high-temperature condenser 11. The high-temperature condenser 11 also has a condensate pipeline connected to the evaporator 9 via the throttle valve 12. The evaporator 9 also has a refrigerant vapor passage connected to the absorber 6. The high-temperature condenser 11 also has a condensate pipeline connected to the steam generator 14 via the high-pressure pump 13. The steam generator 14 also has a refrigerant vapor passage connected to the high-pressure steam inlet of the ejector 10. There is an external heated medium passage that connects to the low-pressure steam inlet of the second ejector 15 after passing through the absorber 6 and the high-temperature condenser 11. There is an external working steam passage connected to the high-pressure steam inlet of the second ejector 15. The second ejector 15 also has a user steam passage connected to the outside. The high-temperature generator 5 and the steam generator 14 also have high-temperature heat medium passages connected to the outside. The low-temperature generator 1 and the evaporator 9 also have low-temperature heat medium passages connected to the outside. The low-temperature condenser 7 also has a cooling medium passage connected to the outside.

[0037] (2) In terms of process, the concentrated solution from the low-temperature generator 1 enters the high-temperature generator 5 via the solution pump 2, solution heat exchanger 3, and second solution heat exchanger 4. The high-temperature heat medium flows through the high-temperature generator 5, heating the solution inside and releasing refrigerant vapor, which is then supplied by the ejector 10. The concentrated solution from the high-temperature generator 5 enters the absorber 6 via the second solution heat exchanger 4, absorbing refrigerant vapor and releasing heat to the heated medium. The dilute solution from the absorber 6 enters the low-temperature generator 1 via the solution heat exchanger 3. The low-temperature heat medium flows through the low-temperature generator 1, heating the solution inside and releasing refrigerant vapor, which then flows into the low-temperature condenser. 7 provides: The refrigerant vapor in the low-temperature condenser 7 releases heat to the cooling medium to form condensate. The condensate in the low-temperature condenser 7 is pressurized by the low-pressure pump 8 and enters the evaporator 9. The refrigerant vapor discharged from the steam generator 14 is provided to the ejector 10 as working steam. The working steam enters the ejector 10, flows through the nozzle to reduce pressure and increase speed, and forms a low-pressure system. The refrigerant vapor generated by the high-temperature generator 5 is drawn into the low-pressure zone of the ejector 10. After the two steam streams are mixed, they flow through the diffuser to reduce speed and increase pressure to form medium-pressure steam and are provided to the high-temperature condenser 11. The refrigerant vapor entering the high-temperature condenser 11 releases heat to the heated medium to form condensate. The first stream of condensate discharged from the high-temperature condenser 11 flows through the throttle valve 12 to reduce pressure and temperature before entering the evaporator 9. The second stream of condensate discharged from the high-temperature condenser 11 flows through the high-pressure pump 13 to increase pressure before entering the steam generator 14 to absorb heat and vaporize. The low-temperature heat medium flows through the evaporator 9, heating the condensate inside to become refrigerant vapor and supplying it to the absorber 6. The heated medium flows through the absorber 6 and the high-temperature condenser 11, gradually absorbing heat and vaporizing. Working steam is supplied to the second ejector 15 from the outside. The working steam enters the second ejector 15, flows through the nozzle to reduce pressure and increase speed, and forms a low-pressure system. The discharged steam is drawn into the low-pressure zone of the second ejector 15. After the two steam streams are mixed, they flow through the diffuser to reduce speed and increase pressure to form medium-pressure steam, which is then supplied to the steam user. The high-temperature heat medium provides high-temperature driving heat load through the high-temperature generator 5 and the steam generator 14, and the external steam-type driving heat load is provided through the second ejector 15. The steam user obtains medium-pressure steam (user steam). The low-temperature heat medium provides low-temperature heat load through the low-temperature generator 1 and the evaporator 9. The cooling medium carries away the discharged cooling heat load through the low-temperature condenser 7, forming a steam generation system based on the third type of jet-absorption heat pump.

[0038] Figure 2 The steam generation system based on the third type of jet-absorption heat pump shown is implemented as follows:

[0039] (1) Structurally, in Figure 1In the steam generation system based on the third type of jet-absorption heat pump shown, the working steam channel that connects to the high-pressure steam inlet of the second ejector 15 externally is removed, and a second high-pressure pump 16 is added. An external liquid medium channel is connected to the steam generator 14 via the second high-pressure pump 16. The steam generator 14 is equipped with a refrigerant steam channel that connects to the high-pressure steam inlet of the second ejector 15.

[0040] (2) In terms of process, with Figure 1 Compared to the steam generation system based on the third type of jet-absorption heat pump shown, the difference is that: after the external liquid is pressurized by the second high-pressure pump 16, it enters the steam generator 14 to absorb heat and vaporize. The steam generator 14 provides working steam to the second ejector 15, thus forming a steam generation system based on the third type of jet-absorption heat pump.

[0041] Figure 3 The steam generation system based on the third type of jet-absorption heat pump shown is implemented as follows:

[0042] (1) Structurally, in the steam generation system based on the third type of jet-absorption heat pump shown in Figure 1, the working steam channel that connects to the high-pressure steam inlet of the second ejector 15 externally is removed, and a second high-pressure pump 16 and a second steam generator 17 are added. There is an external liquid medium channel that connects to the second steam generator 17 via the second high-pressure pump 16. The second steam generator 17 also has a high-pressure steam channel that connects to the high-pressure steam inlet of the second ejector 15, and a high-temperature heat medium channel that connects to the outside.

[0043] (2) In terms of process and Figure 1 Compared with the steam generation system based on the third type of jet-absorption heat pump shown, the difference is that: the external liquid flows through the second high-pressure pump 16 and is pressurized before entering the second steam generator 17. The high-temperature heat medium flows through the second steam generator 17 and heats the liquid inside to form high-pressure steam. The second steam generator 17 provides working steam to the second ejector 15, thus forming a steam generation system based on the third type of jet-absorption heat pump.

[0044] Figure 4 The steam generation system based on the third type of jet-absorption heat pump shown is implemented as follows:

[0045] (1) Structurally, in Figure 1 In the steam generation system based on the third type of jet-absorption heat pump shown, the condensate pipeline connecting the high-pressure pump 13 and the high-temperature condenser 11 to the steam generator 14 via the high-pressure pump 13 is eliminated. The high-temperature heat medium channel connecting the steam generator 14 to the outside and the refrigerant steam channel connecting the high-pressure steam inlet of the ejector 10 are also eliminated. An external working steam channel is added to connect the high-pressure steam inlet of the ejector 10, and a condensate pipeline is added to the high-temperature condenser 11 to connect to the outside.

[0046] (2) In terms of process, with Figure 1 Compared to the steam generation system based on the third type of jet-absorption heat pump shown, the difference is that the condensate discharged from the high-temperature condenser 11 is divided into two paths - the first path enters the evaporator 9 through the throttling valve 12 to absorb heat and vaporize, and the second path is discharged to the outside, providing working steam to the ejector 10, thus forming a steam generation system based on the third type of jet-absorption heat pump.

[0047] Figure 5 The steam generation system based on the third type of jet-absorption heat pump shown is implemented as follows:

[0048] (1) Structurally, in Figure 1 In the steam generation system based on the third type of jet-absorption heat pump shown, the low-temperature generator 1 is connected to the high-temperature generator 5 via a concentrated solution pipeline through a solution pump 2, a solution heat exchanger 3, and a second solution heat exchanger 4. Alternatively, the low-temperature generator 1 can be connected to the absorber 6 via a concentrated solution pipeline through a second solution pump 18 and a second solution heat exchanger 4. The absorber 6 can then be connected to the high-temperature generator 5 via a dilute solution pipeline through a solution pump 2 and a solution heat exchanger 3. Finally, the high-temperature generator 5 can be connected to the absorber 6 via a concentrated solution pipeline through a second solution heat exchanger 4. Alternatively, the high-temperature generator 5 can be connected to the low-temperature generator 1 via a concentrated solution pipeline through a solution heat exchanger 3 and a second solution heat exchanger 4.

[0049] (2) In terms of process, with Figure 1 Compared to the steam generation system based on the third type of jet-absorption heat pump shown, the difference lies in the following: the dilute solution of absorber 6 enters high-temperature generator 5 via solution pump 2 and solution heat exchanger 3. The high-temperature heat medium flows through high-temperature generator 5, heats the solution inside, releases refrigerant vapor, and supplies it to ejector 10. The concentrated solution of high-temperature generator 5 enters low-temperature generator 1 via solution heat exchanger 3 and second solution heat exchanger 4. The low-temperature heat medium flows through low-temperature generator 1, heats the solution inside, releases refrigerant vapor, and supplies it to low-temperature condenser 7. The concentrated solution of low-temperature generator 1 enters absorber 6 via second solution pump 15 and second solution heat exchanger 4, absorbs refrigerant vapor, and releases heat to the heated medium, thus forming a steam generation system based on the third type of jet-absorption heat pump.

[0050] Figure 6 The steam generation system based on the third type of jet-absorption heat pump shown is implemented as follows:

[0051] (1) Structurally, in Figure 4In the steam generation system based on the third type of jet-absorption heat pump shown, the low-temperature generator 1 is connected to the high-temperature generator 5 via a concentrated solution pipeline through a solution pump 2, a solution heat exchanger 3, and a second solution heat exchanger 4. Alternatively, the low-temperature generator 1 can be connected to the absorber 6 via a concentrated solution pipeline through a second solution pump 18 and a second solution heat exchanger 4. The absorber 6 can then be connected to the high-temperature generator 5 via a dilute solution pipeline through a solution pump 2 and a solution heat exchanger 3. Finally, the high-temperature generator 5 can be connected to the absorber 6 via a concentrated solution pipeline through a second solution heat exchanger 4. Alternatively, the high-temperature generator 5 can be connected to the low-temperature generator 1 via a concentrated solution pipeline through a solution heat exchanger 3 and a second solution heat exchanger 4.

[0052] (2) In terms of process, with Figure 4 Compared to the steam generation system based on the third type of jet-absorption heat pump shown, the difference lies in the following: the dilute solution of absorber 6 enters high-temperature generator 5 via solution pump 2 and solution heat exchanger 3. The high-temperature heat medium flows through high-temperature generator 5, heats the solution inside, releases refrigerant vapor, and supplies it to ejector 10. The concentrated solution of high-temperature generator 5 enters low-temperature generator 1 via solution heat exchanger 3 and second solution heat exchanger 4. The low-temperature heat medium flows through low-temperature generator 1, heats the solution inside, releases refrigerant vapor, and supplies it to low-temperature condenser 7. The concentrated solution of low-temperature generator 1 enters absorber 6 via second solution pump 15 and second solution heat exchanger 4, absorbs refrigerant vapor, and releases heat to the heated medium, thus forming a steam generation system based on the third type of jet-absorption heat pump.

[0053] Figure 7 The steam generation system based on the third type of jet-absorption heat pump shown is implemented as follows:

[0054] (1) Structurally, in Figure 1In the steam generation system based on the third type of jet-absorption heat pump shown, the low-temperature generator 1 is connected to the high-temperature generator 5 via a concentrated solution pipeline through a solution pump 2, a solution heat exchanger 3, and a second solution heat exchanger 4. The system is then adjusted so that the low-temperature generator 1 has a concentrated solution pipeline connected to the absorber 6 via a second solution pump 18 and a solution heat exchanger 3. The absorber 6 also has a dilute solution pipeline connected to the second absorber 19 via a solution heat exchanger 3. The second absorber 19 then has a dilute solution pipeline connected to the high-temperature generator 5 via a solution pump 2 and a second solution heat exchanger 4. The high-temperature generator... 5. The concentrated solution pipeline is connected to the absorber 6 via the second solution heat exchanger 4 and adjusted to be a high-temperature generator. 5. The concentrated solution pipeline is connected to the low-temperature generator 1 via the second solution heat exchanger 4. The low-pressure pump 8 and the low-temperature condenser 7 are removed. The low-temperature condenser 7 and its external cooling medium channel and the condensate pipeline connected to the evaporator 9 via the low-pressure pump 8 are removed. The low-temperature generator 1 is connected to the low-temperature condenser 7 via a refrigerant vapor channel and adjusted to be connected to the second absorber 19 via a refrigerant vapor channel. The second absorber 19 also has a cooling medium channel connected to the outside.

[0055] (2) In terms of process, with Figure 1 Compared to the steam generation system based on the third type of jet-absorption heat pump shown, the difference lies in the following: the dilute solution of absorber 6 enters the second absorber 16 via solution heat exchanger 3, absorbs refrigerant vapor and releases heat to the cooling medium; the dilute solution of the second absorber 16 enters the high-temperature generator 5 via solution pump 2 and second solution heat exchanger 4; the high-temperature heat medium flows through the high-temperature generator 5, heats the solution inside, releases refrigerant vapor and enters the low-pressure zone of ejector 10; the concentrated solution of the high-temperature generator 5 enters the low-temperature generator 1 via the second solution heat exchanger 4; the low-temperature heat medium flows through the low-temperature generator 1, heats the solution inside, releases refrigerant vapor and supplies it to the second absorber 16; the concentrated solution of the low-temperature generator 1 enters the absorber 6 via the second solution pump 15 and solution heat exchanger 3, absorbs refrigerant vapor and releases heat to the heated medium, thus forming a steam generation system based on the third type of jet-absorption heat pump.

[0056] Figure 8 The steam generation system based on the third type of jet-absorption heat pump shown is implemented as follows:

[0057] (1) Structurally, in Figure 4In the steam generation system based on the third type of jet-absorption heat pump shown, the low-temperature generator 1 is connected to the high-temperature generator 5 via a concentrated solution pipeline through a solution pump 2, a solution heat exchanger 3, and a second solution heat exchanger 4. The system is then adjusted so that the low-temperature generator 1 has a concentrated solution pipeline connected to the absorber 6 via a second solution pump 18 and a solution heat exchanger 3. The absorber 6 also has a dilute solution pipeline connected to the second absorber 19 via a solution heat exchanger 3. The second absorber 19 then has a dilute solution pipeline connected to the high-temperature generator 5 via a solution pump 2 and a second solution heat exchanger 4. The high-temperature generator... 5. The concentrated solution pipeline is connected to the absorber 6 via the second solution heat exchanger 4 and adjusted to be a high-temperature generator. 5. The concentrated solution pipeline is connected to the low-temperature generator 1 via the second solution heat exchanger 4. The low-pressure pump 8 and the low-temperature condenser 7 are removed. The low-temperature condenser 7 and its external cooling medium channel and the condensate pipeline connected to the evaporator 9 via the low-pressure pump 8 are removed. The low-temperature generator 1 is connected to the low-temperature condenser 7 via a refrigerant vapor channel and adjusted to be connected to the second absorber 19 via a refrigerant vapor channel. The second absorber 19 also has a cooling medium channel connected to the outside.

[0058] (2) In terms of process, with Figure 4 Compared to the steam generation system based on the third type of jet-absorption heat pump shown, the difference lies in the following: the dilute solution of absorber 6 enters the second absorber 16 via solution heat exchanger 3, absorbs refrigerant vapor and releases heat to the cooling medium; the dilute solution of the second absorber 16 enters the high-temperature generator 5 via solution pump 2 and second solution heat exchanger 4; the high-temperature heat medium flows through the high-temperature generator 5, heats the solution inside, releases refrigerant vapor and enters the low-pressure zone of ejector 10; the concentrated solution of the high-temperature generator 5 enters the low-temperature generator 1 via the second solution heat exchanger 4; the low-temperature heat medium flows through the low-temperature generator 1, heats the solution inside, releases refrigerant vapor and supplies it to the second absorber 16; the concentrated solution of the low-temperature generator 1 enters the absorber 6 via the second solution pump 15 and solution heat exchanger 3, absorbs refrigerant vapor and releases heat to the heated medium, thus forming a steam generation system based on the third type of jet-absorption heat pump.

[0059] Figure 9 The steam generation system based on the third type of jet-absorption heat pump shown is implemented as follows:

[0060] (1) Structurally, in Figure 1 In the steam generation system based on the third type of jet-absorption heat pump shown, compressor A is added, and the refrigerant vapor channel of the high-temperature generator 5 is connected to the low-pressure steam inlet of the ejector 10, which is adjusted so that the refrigerant vapor channel of the high-temperature generator 5 is connected to the low-pressure steam inlet of the ejector 10 via compressor A.

[0061] (2) In terms of process, with Figure 1Compared to the steam generation system based on the third type of jet-absorption heat pump shown, the difference is that: the refrigerant vapor generated by the high-temperature generator 5 flows through the compressor A to increase its pressure and temperature, and then enters the low-pressure zone of the ejector 10; the external compressor A provides driving mechanical energy to form a steam generation system based on the third type of jet-absorption heat pump.

[0062] Figure 10 The steam generation system based on the third type of jet-absorption heat pump shown is implemented as follows:

[0063] (1) Structurally, in Figure 1 In the steam generation system based on the third type of jet-absorption heat pump shown, compressor A is added, and the refrigerant vapor passage of evaporator 9 is connected to absorber 6, so that the refrigerant vapor passage of evaporator 9 is connected to absorber 6 via compressor A.

[0064] (2) In terms of process, with Figure 1 Compared to the steam generation system based on the third type of jet-absorption heat pump shown, the difference is that: the refrigerant vapor generated by the evaporator 9 flows through the compressor A to increase its pressure and temperature, and then enters the absorber 6 to release heat and condense; the external mechanical energy is provided by the compressor A to form a steam generation system based on the third type of jet-absorption heat pump.

[0065] Figure 11 The steam generation system based on the third type of jet-absorption heat pump shown is implemented as follows:

[0066] (1) Structurally, in Figure 1 In the steam generation system based on the third type of jet-absorption heat pump shown, a two-phase expander B is added and the throttle valve 11 is replaced.

[0067] (2) In terms of process, with Figure 1 Compared to the steam generation system based on the third type of jet-absorption heat pump shown, the difference is that: part of the condensate discharged from the high-temperature condenser 11 flows through the two-phase expander B to reduce pressure and do work, and then enters the evaporator 9 to absorb heat and vaporize; the mechanical energy output by the two-phase expander B is provided to the outside to form a steam generation system based on the third type of jet-absorption heat pump.

[0068] Figure 12 The steam generation system based on the third type of jet-absorption heat pump shown is implemented as follows:

[0069] (1) Structurally, in Figure 7 In the steam generation system based on the third type of jet-absorption heat pump shown, a nozzle C is added and replaces the throttle valve 11, a diffuser D is added, and the refrigerant vapor passage of the evaporator 9 is connected to the absorber 6, which is adjusted so that the refrigerant vapor passage of the evaporator 9 is connected to the absorber 6 via the diffuser D.

[0070] (2) In terms of process, with Figure 7 Compared to the steam generation system based on the third type of jet-absorption heat pump shown, the difference is that: part of the condensate discharged from the high-temperature condenser 11 flows through the nozzle C to reduce pressure and increase speed, and then enters the evaporator 9 to absorb heat and vaporize; the refrigerant vapor discharged from the evaporator 9 flows through the diffuser D to reduce speed and increase pressure, and then enters the absorber 6 to release heat and condense, forming a steam generation system based on the third type of jet-absorption heat pump.

[0071] Figure 13 The steam generation system based on the third type of jet-absorption heat pump shown is implemented as follows:

[0072] (1) Structurally, in Figure 7 In the steam generation system based on the third type of jet-absorption heat pump shown, a nozzle C is added and replaces the throttle valve 11, a dual-energy compressor E is added, and the refrigerant vapor passage of the evaporator 9 is connected to the absorber 6, which is adjusted so that the refrigerant vapor passage of the evaporator 9 is connected to the absorber 6 via the dual-energy compressor E.

[0073] (2) In terms of process, with Figure 7 Compared to the steam generation system based on the third type of jet-absorption heat pump shown, the difference is that: part of the condensate discharged from the high-temperature condenser 11 flows through the nozzle C to reduce pressure and increase speed, and then enters the evaporator 9 to absorb heat and vaporize; the refrigerant vapor discharged from the evaporator 9 flows through the dual-energy compressor E to increase pressure and temperature and decrease speed, and then enters the absorber 6 to release heat and condense; the external dual-energy compressor E provides driving mechanical energy to form a steam generation system based on the third type of jet-absorption heat pump.

[0074] The effects achievable by this invention—the steam generation system based on the third type of jet-absorption heat pump proposed in this invention has the following effects and advantages:

[0075] (1) A new technology for heating and efficient steam production using thermal energy or combined mechanical energy has been created.

[0076] (2) Combining jetting and absorption technologies to leverage their respective strengths and compensate for their weaknesses, thereby improving energy efficiency.

[0077] (3) The process is reasonable and the performance index is reasonable; the structure is simple and the manufacturing cost is low.

[0078] (4) High-temperature heat sources are used in segments to reduce irreversible losses due to systemic temperature differences and improve their utilization efficiency and value.

[0079] (5) It can realize the deep utilization of medium-temperature heat resources and greatly improve the heating parameters.

[0080] (6) It has expanded the application scenarios and application value of jetting technology and absorption technology.

[0081] (7) The ejector is simple to manufacture, durable, and has little irreversible loss, which is beneficial to improving the performance index of the heat pump.

[0082] (8) A variety of specific technical solutions are provided, which can cope with many different actual situations and are conducive to expanding the application scope and use value of the steam generation system based on the third type of jet-absorption heat pump.

Claims

1. A steam generation system based on a third-type jet-absorption heat pump mainly consists of a low-temperature generator, a solution pump, a solution heat exchanger, a second solution heat exchanger, a high-temperature generator, an absorber, a low-temperature condenser, a low-pressure pump, an evaporator, an ejector, a high-temperature condenser, a throttling valve, a high-pressure pump, a steam generator, and a second ejector; the low-temperature generator (1) has a concentrated solution pipeline connected to the high-temperature generator (5) via the solution pump (2), the solution heat exchanger (3), and the second solution heat exchanger (4); the high-temperature generator (5) also has The concentrated solution pipeline is connected to the absorber (6) via the second solution heat exchanger (4). The absorber (6) also has a dilute solution pipeline connected to the low-temperature generator (1) via the solution heat exchanger (3). The low-temperature generator (1) also has a refrigerant vapor channel connected to the low-temperature condenser (7). The low-temperature condenser (7) also has a condensate pipeline connected to the evaporator (9) via the low-pressure pump (8). The high-temperature generator (5) also has a refrigerant vapor channel connected to the low-pressure steam inlet of the ejector (10). The ejector (10) also has a medium-pressure refrigerant vapor channel connected to the high-pressure steam inlet of the ejector (10). The high-temperature condenser (11) is connected to the evaporator (9) via a throttle valve (12). The evaporator (9) is also connected to the absorber (6) via a refrigerant vapor passage. The high-temperature condenser (11) is also connected to the steam generator (14) via a high-pressure pump (13). The steam generator (14) is also connected to the high-pressure steam inlet of the ejector (10) via a refrigerant vapor passage. The external heating medium passage connects to the second ejector after passing through the absorber (6) and the high-temperature condenser (11). The device (15) has a low-pressure steam inlet and an external working steam channel connected to the high-pressure steam inlet of the second ejector (15). The second ejector (15) also has a user steam channel connected to the outside. The high-temperature generator (5) and the steam generator (14) also have high-temperature heat medium channels connected to the outside. The low-temperature generator (1) and the evaporator (9) also have low-temperature heat medium channels connected to the outside. The low-temperature condenser (7) also has a cooling medium channel connected to the outside, forming a steam generation system based on a third-type jet-absorption heat pump.

2. A steam generation system based on a third type of jet-absorption heat pump is a steam generation system based on a third type of jet-absorption heat pump as described in claim 1, wherein the working steam channel externally connected to the high-pressure steam inlet of the second ejector (15) is removed, a second high-pressure pump (16) is added, and an external liquid medium channel is connected to the steam generator (14) through the second high-pressure pump (16). The steam generator (14) is provided with a refrigerant steam channel connected to the high-pressure steam inlet of the second ejector (15), thus forming a steam generation system based on a third type of jet-absorption heat pump.

3. A steam generation system based on a third type of jet-absorption heat pump is a steam generation system based on a third type of jet-absorption heat pump as described in claim 1, wherein the working steam channel externally connected to the high-pressure steam inlet of the second ejector (15) is removed, and a second high-pressure pump (16) and a second steam generator (17) are added. An external liquid medium channel is connected to the second steam generator (17) via the second high-pressure pump (16). The second steam generator (17) also has a high-pressure steam channel connected to the high-pressure steam inlet of the second ejector (15). The second steam generator (17) also has a high-temperature heat medium channel connected to the outside, thus forming a steam generation system based on a third type of jet-absorption heat pump.

4. A steam generation system based on a third type of jet-absorption heat pump is formed by eliminating the condensate pipeline connecting the high-pressure pump (13) and the high-temperature condenser (11) to the steam generator (14) via the high-pressure pump (13) in any of the steam generation systems based on a third type of jet-absorption heat pump as described in claims 1-3. The steam generator (14) and its high-temperature heat medium channel connecting to the outside and the refrigerant steam channel connecting to the high-pressure steam inlet of the ejector (10) are also eliminated. An external working steam channel is added to connect to the high-pressure steam inlet of the ejector (10), and a condensate pipeline is added to the high-temperature condenser (11) to connect to the outside, thus forming a steam generation system based on a third type of jet-absorption heat pump.

5. A steam generation system based on a third type of jet-absorption heat pump is formed in any of the steam generation systems based on a third type of jet-absorption heat pump as described in claims 1-4. The low-temperature generator (1) is connected to the high-temperature generator (5) via a concentrated solution pipeline through a solution pump (2), a solution heat exchanger (3), and a second solution heat exchanger (4). The low-temperature generator (1) is connected to the absorber (6) via a concentrated solution pipeline through a second solution pump (18) and a second solution heat exchanger (4). The absorber (6) is then connected to the high-temperature generator (5) via a dilute solution pipeline through a solution pump (2) and a solution heat exchanger (3). The high-temperature generator (5) is connected to the absorber (6) via a concentrated solution pipeline through a second solution heat exchanger (4). The high-temperature generator (5) is connected to the low-temperature generator (1) via a concentrated solution pipeline through a solution heat exchanger (3) and a second solution heat exchanger (4).

6. A steam generation system based on a third type of jet-absorption heat pump, wherein in any of the steam generation systems based on a third type of jet-absorption heat pump as described in claims 1-4, the low-temperature generator (1) is connected to the high-temperature generator (5) via a concentrated solution pipeline through a solution pump (2), a solution heat exchanger (3), and a second solution heat exchanger (4). The low-temperature generator (1) is then connected to the absorber (6) via a concentrated solution pipeline through a second solution pump (18) and a solution heat exchanger (3). The absorber (6) also has a dilute solution pipeline connected to the second absorber (19) via the solution heat exchanger (3). The second absorber (19) further has a dilute solution pipeline connected to the high-temperature generator (5) via the solution pump (2) and the second solution heat exchanger (4). The high-temperature generator (5) is connected to the absorber (6) via the second solution heat exchanger (4) through the concentrated solution pipeline. The high-temperature generator (5) is connected to the low-temperature generator (1) via the second solution heat exchanger (4). The low-pressure pump (8) and the low-temperature condenser (7) are removed. The low-temperature condenser (7) and its external cooling medium channel and the condensate pipeline connected to the evaporator (9) via the low-pressure pump (8) are removed. The low-temperature generator (1) is connected to the low-temperature condenser (7) via the refrigerant vapor channel. The low-temperature generator (1) is connected to the second absorber (19) via the refrigerant vapor channel. The second absorber (19) also has a cooling medium channel connected to the outside, forming a steam generation system based on the third type of jet-absorption heat pump.

7. A steam generation system based on a third type of jet-absorption heat pump is a steam generation system based on a third type of jet-absorption heat pump as described in any of claims 1-6, wherein a compressor (A) is added, and the refrigerant vapor passage of the high-temperature generator (5) connected to the low-pressure steam inlet of the ejector (10) is adjusted so that the refrigerant vapor passage of the high-temperature generator (5) is connected to the low-pressure steam inlet of the ejector (10) via the compressor (A), thereby forming a steam generation system based on a third type of jet-absorption heat pump.

8. A steam generation system based on a third type of jet-absorption heat pump is formed by adding a compressor (A) to any of the steam generation systems based on a third type of jet-absorption heat pump as described in claims 1-6, and adjusting the connection between the refrigerant vapor passage of the evaporator (9) and the absorber (6) to be such that the refrigerant vapor passage of the evaporator (9) is connected to the absorber (6) via the compressor (A), thereby forming a steam generation system based on a third type of jet-absorption heat pump.

9. A steam generation system based on a third type of jet-absorption heat pump is formed by adding a two-phase expander (B) and replacing the throttle valve (11) to any of the steam generation systems based on a third type of jet-absorption heat pump as described in claims 1-8, thereby forming a steam generation system based on a third type of jet-absorption heat pump.

10. A steam generation system based on a third type of jet-absorption heat pump is formed by adding a nozzle (C) and replacing the throttle valve (11) in any of the steam generation systems based on a third type of jet-absorption heat pump as described in claims 1-7, adding a diffuser (D), and adjusting the connection between the refrigerant vapor passage of the evaporator (9) and the absorber (6) to be such that the refrigerant vapor passage of the evaporator (9) is connected to the absorber (6) via the diffuser (D), thereby forming a steam generation system based on a third type of jet-absorption heat pump.

11. A steam generation system based on a third type of jet-absorption heat pump is a steam generation system based on a third type of jet-absorption heat pump as described in any of claims 1-7, wherein a nozzle (C) is added and a throttle valve (11) is replaced, a dual-energy compressor (E) is added, and the refrigerant vapor passage of the evaporator (9) is connected to the absorber (6) so that the refrigerant vapor passage of the evaporator (9) is connected to the absorber (6) via the dual-energy compressor (E), thereby forming a steam generation system based on a third type of jet-absorption heat pump.

12. A steam generation system based on a third type of jet-absorption heat pump is formed in any of the steam generation systems based on a third type of jet-absorption heat pump as described in claims 1-11, wherein the external heating medium channel passes through the absorber (6) and the high-temperature condenser (11) and then connects to the low-pressure steam inlet of the second ejector (15), and is adjusted so that the external heating medium channel passes through the high-temperature condenser (11) and the absorber (6) and then connects to the low-pressure steam inlet of the second ejector (15), thus forming a steam generation system based on a third type of jet-absorption heat pump.

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