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

Abstract

The invention provides a steam generation system based on a second-type injection-absorption heat pump, and belongs to the technical field of heat pumps. The generator is communicated with the absorber through the solution pump and the solution heat exchanger, the absorber is communicated with the generator through the solution heat exchanger, the generator is communicated with the condenser, the condenser is communicated with the evaporator through the low-pressure pump, and the evaporator is communicated with the steam generator through the high-pressure pump. The steam generator communicates with a high-pressure steam inlet of the ejector, the ejector communicates with the absorber through a medium-pressure steam channel, the outside communicates with a high-pressure steam inlet of the second ejector through a working steam channel, the outside communicates with a low-pressure steam inlet of the second ejector through the absorber through a heated medium channel, and the second ejector communicates with the outside through a user steam channel. The generator and the evaporator are communicated with the outside through medium-temperature thermal medium channels, the condenser is communicated with the outside through a cooling medium channel, the steam generator is communicated with the outside through a high-temperature thermal medium channel, and the steam generation system based on the second-type injection-absorption heat pump is formed.

Description

Technical fields:

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

[0002] People need steam with different parameters in their daily lives and production processes; compared with traditional steam production technologies, using heat pump technology to provide steam is an important means to achieve energy efficiency and high-value utilization.

[0003] 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.

[0004] Type II absorption heat pump technology has the advantages of low manufacturing cost and direct application of medium-temperature heat energy; however, its operating range and application areas are limited by the properties of the solution and refrigerant medium; for example, when the temperature of the medium-temperature heat resource is low and the user demand is steam, Type II absorption heat pumps using lithium bromide aqueous solution as the working medium often fail to function.

[0005] Based on the principles of simple, proactive, and efficient energy utilization for heating, this invention proposes a steam generation system based on a second-type jet-absorption heat pump, which features a rational process, simple structure, integrated technology, utilization of multiple energy sources, and rationalized performance index. Summary of the Invention:

[0006] The main objective of this invention is to provide a steam generation system based on a second type of jet-absorption heat pump. The specific contents of the invention are described in detail below:

[0007] 1. A steam generation system based on a type II jet-absorption heat pump mainly consists of a generator, a solution pump, a solution heat exchanger, an absorber, a condenser, a low-pressure pump, an evaporator, a high-pressure pump, a steam generator, an ejector, and a second ejector. The generator has a concentrated solution pipeline connected to the absorber via the solution pump and the solution heat exchanger. The absorber also has a dilute solution pipeline connected to the generator via the solution heat exchanger. The generator also has a refrigerant vapor channel connected to the condenser. The condenser has a condensate pipeline connected to the evaporator via the low-pressure pump. The evaporator also has a condensate pipeline connected to the steam generator via the high-pressure pump. The evaporator also has a refrigerant vapor channel connected to the ejector. The steam generator has a low-pressure steam inlet, a refrigerant steam channel connecting to the high-pressure steam inlet of the ejector, a medium-pressure steam channel connecting to the absorber, an external working steam channel connecting to the high-pressure steam inlet of the second ejector, an external heated medium channel connecting to the low-pressure steam inlet of the second ejector after passing through the absorber, the second ejector also has a user steam channel connecting to the outside, the generator and evaporator also have medium-temperature heat medium channels connecting to the outside, the condenser also has a cooling medium channel connecting to the outside, and the steam generator also has a high-temperature heat medium channel connecting to the outside, forming a steam generation system based on a second-type jet-absorption heat pump.

[0008] 2. A steam generation system based on a second type of jet-absorption heat pump is a steam generation system based on a second 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 removed, a second high-pressure pump is added, and an external liquid medium channel is connected to the steam generator via the second high-pressure pump. The steam generator is equipped with a working steam channel connected to the high-pressure steam inlet of the second ejector, thus forming a steam generation system based on a second type of jet-absorption heat pump.

[0009] 3. A steam generation system based on a second type of jet-absorption heat pump is a steam generation system based on a second 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 working 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 second type of jet-absorption heat pump.

[0010] 4. A steam generation system based on a second type of jet-absorption heat pump is formed by adding a second absorber, a second solution pump, a second generator, and a second solution heat exchanger to any of the steam generation systems based on a second type of jet-absorption heat pump described in items 1-3. The absorber is modified so that it has a dilute solution pipeline connected to the generator via the solution heat exchanger, while the absorber has a dilute solution pipeline connected to the second absorber via the solution heat exchanger. The second absorber also has a dilute solution pipeline connected to the second generator via the second solution pump and the second solution heat exchanger. The second generator has a concentrated solution pipeline connected to the generator via the second solution heat exchanger. The generator is modified so that it has a refrigerant vapor channel connected to the condenser, while the generator also has a refrigerant vapor channel connected to the second absorber. The condenser is modified so that it has a condensate pipeline connected to the evaporator via the low-pressure pump, while the condenser also has a condensate pipeline connected to the evaporator via the low-pressure pump and the second absorber. The second generator also has a medium-temperature heat medium channel connected to the outside, thus forming a steam generation system based on a second type of jet-absorption heat pump.

[0011] 5. A steam generation system based on a second type of jet-absorption heat pump, comprising, in any of the steam generation systems based on a second type of jet-absorption heat pump described in items 1-3, an additional second absorber, a second solution pump, a second generator, and a second solution heat exchanger. The absorber is modified from having a dilute solution pipeline connected to the generator via the solution heat exchanger to having a dilute solution pipeline connected to the second absorber via the solution heat exchanger and the second solution heat exchanger. The second absorber also has a dilute solution pipeline connected to the second generator via the second solution pump and the second solution heat exchanger. The second generator has a concentrated solution pipeline connected to the generator. The generator is modified from having a refrigerant vapor channel connected to the condenser to having a refrigerant vapor channel connected to the second absorber. The second generator also has a refrigerant vapor channel connected to the condenser. The condenser is modified from having a condensate pipeline connected to the evaporator via a low-pressure pump to having a condensate pipeline connected to the evaporator via the low-pressure pump and the second absorber. The second generator also has a medium-temperature heat medium channel connected to the outside, thus forming a steam generation system based on a second type of jet-absorption heat pump.

[0012] 6. A steam generation system based on a second type of jet-absorption heat pump is formed by adding a solution throttling valve to any of the steam generation systems based on a second type of jet-absorption heat pump described in item 5, thereby adjusting the connection between the concentrated solution pipeline of the second generator and the generator to a connection between the concentrated solution pipeline of the second generator and the generator via the solution throttling valve, thus forming a steam generation system based on a second type of jet-absorption heat pump.

[0013] 7. A steam generation system based on a second type of jet-absorption heat pump is formed by adding a second absorber, a second solution pump, a second generator, and a second solution heat exchanger to any of the steam generation systems based on a second type of jet-absorption heat pump described in items 1-3. The generator is modified so that it has a refrigerant vapor channel connected to the condenser and a refrigerant vapor channel connected to the second absorber. The second absorber also has a dilute solution pipeline connected to the second generator via the second solution pump and the second solution heat exchanger. The second generator also has a concentrated solution pipeline connected to the second absorber via the second solution heat exchanger. The second generator also has a refrigerant vapor channel connected to the condenser. The second generator also has a medium-temperature heat medium channel connected to the outside. The second absorber also has a cooling medium channel connected to the outside, thus forming a steam generation system based on a second type of jet-absorption heat pump.

[0014] 8. A steam generation system based on a type II jet-absorption heat pump is a steam generation system based on a type II jet-absorption heat pump described in any of items 4-6, wherein a third absorber, a third solution pump, a third solution heat exchanger, and a third generator are added. The second generator is modified so that it has a refrigerant vapor channel connected to the condenser and is connected to the third absorber. The third absorber also has a dilute solution pipeline connected to the third generator via the third solution pump and the third solution heat exchanger. The third generator also has a concentrated solution pipeline connected to the third absorber via the third solution heat exchanger. The third generator also has a refrigerant vapor channel connected to the condenser. The third generator also has a medium-temperature heat medium channel connected to the outside. The third absorber also has a cooling medium channel connected to the outside, thus forming a steam generation system based on a type II jet-absorption heat pump.

[0015] 9. A steam generation system based on a type II jet-absorption heat pump is defined as follows: in any of the steam generation systems described in items 1-8, the steam generator and its high-temperature heat medium channel connected to the outside are eliminated; the refrigerant vapor channel connecting the steam generator and the ejector is eliminated; an external working steam channel is added to connect to the high-pressure steam inlet of the ejector; the high-pressure pump and the condensate pipeline connecting the evaporator to the steam generator via the high-pressure pump are eliminated; a condensate pipeline is added to the condenser to connect to the outside, or the high-pressure pump is retained and the condenser is added to connect to the outside via the high-pressure pump, thus forming a steam generation system based on a type II jet-absorption heat pump.

[0016] 10. The second type of jet-absorption steam generation system is formed by adding a compressor to any of the second type of jet-absorption steam generation systems described in items 1-9, and adjusting the connection between the refrigerant vapor passage of the evaporator and the low-pressure steam inlet of the ejector to be such that the refrigerant vapor passage of the evaporator is connected to the low-pressure steam inlet of the ejector after passing through the compressor, thus forming the second type of jet-absorption steam generation system.

[0017] 11. The second type of jet-absorption steam generation system is formed by adding a compressor to any of the second type of jet-absorption steam generation systems described in items 1-9, and adjusting the connection between the ejector and the absorber from a medium-pressure steam channel to a connection between the ejector and the absorber via the compressor, thus forming the second type of jet-absorption steam generation system. Attached image description:

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

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

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

[0029] In the diagram, 1-generator, 2-solution pump, 3-solution heat exchanger, 4-absorber, 5-condenser, 6-low-pressure pump, 7-evaporator, 8-high-pressure pump, 9-steam generator, 10-ejector, 11-second ejector, 12-second high-pressure pump, 13-second steam generator, 14-second absorber, 15-second solution pump, 16-second generator, 17-second solution heat exchanger, 18-solution throttle valve, 19-third absorber, 20-third solution pump, 21-third solution heat exchanger, 22-third generator, 23-compressor. Detailed implementation method:

[0030] The present invention will now be described in detail with reference to the accompanying drawings and examples. In the specific examples, structures and processes will not be repeated unless necessary, and processes will not be described where they are obvious or where other embodiments are available for reference.

[0031] Figure 1 The steam generation system based on the second type of jet-absorption heat pump shown is implemented as follows:

[0032] (1) Structurally, it mainly consists of a generator, a solution pump, a solution heat exchanger, an absorber, a condenser, a low-pressure pump, an evaporator, a high-pressure pump, a steam generator, an ejector, and a second ejector; the generator 1 has a concentrated solution pipeline connected to the absorber 4 via the solution pump 2 and the solution heat exchanger 3, the absorber 4 also has a dilute solution pipeline connected to the generator 1 via the solution heat exchanger 3, the generator 1 also has a refrigerant vapor channel connected to the condenser 5, the condenser 5 also has a condensate pipeline connected to the evaporator 7 via the low-pressure pump 6, the evaporator 7 also has a condensate pipeline connected to the steam generator 9 via the high-pressure pump 8, and the evaporator 7 also has a refrigerant vapor channel connected to... The ejector 10 has a low-pressure steam inlet, and the steam generator 9 also has a refrigerant steam channel connected to the high-pressure steam inlet of the ejector 10. The ejector 10 also has a medium-pressure steam channel connected to the absorber 4. There is an external working steam channel connected to the high-pressure steam inlet of the second ejector 11. There is an external heated medium channel that connects to the low-pressure steam inlet of the second ejector 11 after passing through the absorber 4. The second ejector 11 also has a user steam channel connected to the outside. The generator 1 and the evaporator 7 also have medium-temperature heat medium channels connected to the outside. The condenser 5 also has a cooling medium channel connected to the outside. The steam generator 9 also has a high-temperature heat medium channel connected to the outside.

[0033] (2) In terms of process, the concentrated solution of generator 1 enters absorber 4 through solution pump 2 and solution heat exchanger 3, absorbs refrigerant vapor and releases heat to the heated medium. The dilute solution of absorber 4 enters generator 1 through solution heat exchanger 3. The medium-temperature hot medium flows through generator 1, heats the solution inside, releases refrigerant vapor, and supplies it to condenser 5. The refrigerant vapor in condenser 5 releases heat to the cooling medium to form condensate. The condensate in condenser 5 is pressurized by low-pressure pump 6 and then enters evaporator 7 to absorb heat, heat up, and partially vaporize. The refrigerant vapor generated by evaporator 7 is supplied to ejector 10. The condensate in evaporator 7 is pressurized by high-pressure pump 8 and then enters steam generator 9. The high-temperature hot medium flows through steam generator 9, heats the condensate inside, heats up, and vaporizes. The refrigerant vapor generated by steam generator 9 is supplied to ejector 10 as working steam. The working steam enters ejector 10, flows through nozzles to reduce pressure and increase speed. A low-pressure system is formed. The refrigerant vapor generated by the evaporator 7 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, which is then supplied to the absorber 4. The external heated medium flows through the absorber 4 to absorb heat and vaporize. The working steam enters the second ejector 11, flows through the nozzle to reduce pressure and increase speed, and forms a low-pressure system. The refrigerant vapor generated by the absorber 4 is drawn into the low-pressure zone of the second ejector 11. 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 steam generator 9 and external working steam to the second ejector 11. The medium-temperature heat medium provides driving heat load and heating heat load through the generator 1 and the evaporator 7. The cooling medium carries away the low-temperature discharge heat load through the condenser 5. The external user obtains medium-pressure steam, forming a steam generation system based on the second type of jet-absorption heat pump.

[0034] Figure 2 The steam generation system based on the second type of jet-absorption heat pump shown is implemented as follows:

[0035] (1) Structurally, in Figure 1 In the steam generation system based on the second type of jet-absorption heat pump shown, the working steam channel that connects to the high-pressure steam inlet of the second ejector 11 externally is removed, and a second high-pressure pump 12 is added. An external liquid medium channel is connected to the steam generator 9 through the second high-pressure pump 12, and the steam generator 9 is equipped with a working steam channel that connects to the high-pressure steam inlet of the second ejector 11.

[0036] (2) In terms of process, with Figure 1 Compared with the steam generation system based on the second type of jet-absorption heat pump shown, the difference is that: after the external liquid is pressurized by the second high-pressure pump 12, it enters the steam generator 9, absorbs heat and vaporizes, and the steam generator 9 provides working steam to the second ejector 11 to form a steam generation system based on the second type of jet-absorption heat pump.

[0037] Figure 3 The steam generation system based on the second type of jet-absorption heat pump shown is implemented as follows:

[0038] (1) Structurally, in Figure 1 In the steam generation system based on the second type of jet-absorption heat pump shown, the working steam channel that connects to the high-pressure steam inlet of the second ejector 11 externally is removed, and a second high-pressure pump 12 and a second steam generator 13 are added. There is an external liquid medium channel that connects to the second steam generator 13 via the second high-pressure pump 12. The second steam generator 13 also has a working steam channel that connects to the high-pressure steam inlet of the second ejector 11, and the second steam generator 13 also has a high-temperature heat medium channel that connects to the outside.

[0039] (2) In terms of process, with Figure 1 Compared with the steam generation system based on the second type of jet-absorption heat pump shown, the difference is that: the external liquid flows through the second high-pressure pump 12 and is pressurized before entering the second steam generator 13. The high-temperature heat medium flows through the second steam generator 13 and heats the liquid inside to form high-pressure steam. The second steam generator 13 provides high-pressure steam to the second ejector 11 as working steam, thus forming a steam generation system based on the second type of jet-absorption heat pump.

[0040] Figure 4 The steam generation system based on the second type of jet-absorption heat pump shown is implemented as follows:

[0041] (1) Structurally, in Figure 1 In the steam generation system based on the second type of jet-absorption heat pump shown, a second absorber, a second solution pump, a second generator, and a second solution heat exchanger are added. The absorber 4 is changed from having a dilute solution pipeline connected to the generator 1 via the solution heat exchanger 3 to having a dilute solution pipeline connected to the second absorber 14 via the solution heat exchanger 3. The second absorber 14 also has a dilute solution pipeline connected to the second generator 16 via the second solution pump 15 and the second solution heat exchanger 17. The second generator 16 has a concentrated solution pipeline connected to the generator 1 via the second solution heat exchanger 17. The generator 1 is changed from having a refrigerant vapor channel connected to the condenser 5 to having a refrigerant vapor channel connected to the second absorber 14. The second generator 16 also has a refrigerant vapor channel connected to the condenser 5. The condenser 5 is changed from having a condensate pipeline connected to the evaporator 7 via the low-pressure pump 6 to having a condensate pipeline connected to the evaporator 7 via the low-pressure pump 6 and the second absorber 14. The second generator 16 also has a medium-temperature heat medium channel connected to the outside.

[0042] (2) In terms of process, with Figure 1Compared to the steam generation system based on the second type of jet-absorption heat pump shown, the difference lies in the following: the dilute solution of absorber 4 enters the second absorber 14 via solution heat exchanger 3, absorbs refrigerant vapor and releases heat; the dilute solution of the second absorber 14 enters the second generator 16 via the second solution pump 15 and the second solution heat exchanger 17; the medium-temperature heat medium flows through the second generator 16, heating the solution inside and releasing refrigerant vapor, which is then supplied to the condenser 5; the concentrated solution of the second generator 16 enters the second generator 16 via the second solution heat exchanger 17. The medium-temperature heat medium flows through generator 1, heats the solution inside, releases refrigerant vapor, and supplies it to the second absorber 14. The refrigerant vapor in condenser 5 releases heat to the cooling medium to form condensate. The condensate in condenser 5 flows through low-pressure pump 6 to increase pressure, flows through the second absorber 14 and absorbs heat, and then enters evaporator 7 to absorb heat and partially vaporize. The medium-temperature heat medium provides driving heat load and heating heat load through generator 1, evaporator 7 and second generator 16, forming a steam generation system based on the second type of jet-absorption heat pump.

[0043] Figure 5 The steam generation system based on the second type of jet-absorption heat pump shown is implemented as follows:

[0044] (1) Structurally, in Figure 1 In the steam generation system based on the second type of jet-absorption heat pump shown, a second absorber, a second solution pump, a second generator, and a second solution heat exchanger are added. The absorber 4 is changed from having a dilute solution pipeline connected to the generator 1 via the solution heat exchanger 3 to having a dilute solution pipeline connected to the second absorber 14 via the solution heat exchanger 3 and the second solution heat exchanger 17. The second absorber 14 also has a dilute solution pipeline connected to the second generator 16 via the second solution pump 15 and the second solution heat exchanger 17. The second generator 16 has a concentrated solution pipeline connected to the generator 1. The generator 1 is changed from having a refrigerant vapor channel connected to the condenser 5 to having a refrigerant vapor channel connected to the second absorber 14. The second generator 16 also has a refrigerant vapor channel connected to the condenser 5. The condenser 5 is changed from having a condensate pipeline connected to the evaporator 7 via the low-pressure pump 6 to having a condensate pipeline connected to the evaporator 7 via the low-pressure pump 6 and the second absorber 14. The second generator 16 also has a medium-temperature heat medium channel connected to the outside.

[0045] (2) In terms of process, with Figure 1Compared to the steam generation system based on the second type of jet-absorption heat pump shown, the difference lies in the following: the dilute solution of absorber 4 enters the second absorber 14 via solution heat exchanger 3 and the second solution heat exchanger 17, absorbs refrigerant vapor and releases heat; the dilute solution of the second absorber 14 enters the second generator 16 via the second solution pump 15 and the second solution heat exchanger 17; the medium-temperature heat medium flows through the second generator 16, heats the solution inside, releases refrigerant vapor and supplies it to the condenser 5; the concentrated solution of the second generator 16 enters the generator 1; the medium-temperature heat medium flows through the generator 1, heats the solution inside, releases refrigerant vapor and supplies it to the second absorber 14; the refrigerant vapor in the condenser 5 releases heat to the cooling medium to form condensate; the condensate in the condenser 5 flows through the low-pressure pump 6 to increase pressure, flows through the second absorber 14 and absorbs heat, and then enters the evaporator 7 to absorb heat and partially vaporize; the medium-temperature heat medium provides driving heat load and heating heat load through the generator 1, evaporator 7 and the second generator 16, forming a steam generation system based on the second type of jet-absorption heat pump.

[0046] Figure 6 The steam generation system based on the second type of jet-absorption heat pump shown is implemented as follows:

[0047] (1) Structurally, in Figure 5 In the steam generation system based on the second type of jet-absorption heat pump shown, a solution throttling valve 18 is added to connect the concentrated solution pipeline of the second generator 16 to the generator 1, so that the concentrated solution pipeline of the second generator 16 is connected to the generator 1 via the solution throttling valve 18.

[0048] (2) In terms of process, with Figure 5 Compared with the steam generation system based on the second type of jet-absorption heat pump shown, the difference is that the concentrated solution of the second generator 16 flows through the solution throttle valve 18 to reduce pressure and temperature, and then enters the generator 1 to absorb heat and vaporize, forming a steam generation system based on the second type of jet-absorption heat pump.

[0049] Figure 7 The steam generation system based on the second type of jet-absorption heat pump shown is implemented as follows:

[0050] (1) Structurally, in Figure 1In the steam generation system based on the second type of jet-absorption heat pump shown, a second absorber, a second solution pump, a second generator, and a second solution heat exchanger are added. The generator 1, which was previously connected to the condenser 5 via a refrigerant vapor channel, is now connected to the second absorber 14 via a refrigerant vapor channel. The second absorber 14 also has a dilute solution pipeline connected to the second generator 16 via the second solution pump 15 and the second solution heat exchanger 17. The second generator 16 also has a concentrated solution pipeline connected to the second absorber 14 via the second solution heat exchanger 17. The second generator 16 also has a refrigerant vapor channel connected to the condenser 5 and a medium-temperature heat medium channel connected to the outside. The second absorber 14 also has a cooling medium channel connected to the outside.

[0051] (2) In terms of process, with Figure 1 Compared to the steam generation system based on the second type of jet-absorption heat pump shown, the difference is that: the refrigerant vapor released by generator 1 enters the second absorber 14, the dilute solution in the second absorber 14 enters the second generator 16 via the second solution pump 15 and the second solution heat exchanger 17, the medium-temperature heat medium flows through the second generator 16, heats the solution entering it to release refrigerant vapor and supplies it to the condenser 5, and the concentrated solution in the second generator 16 enters the second absorber 14 via the second solution heat exchanger 17, absorbs the refrigerant vapor and releases heat to the cooling medium, thus forming a steam generation system based on the second type of jet-absorption heat pump.

[0052] Figure 8 The steam generation system based on the second type of jet-absorption heat pump shown is implemented as follows:

[0053] (1) Structurally, in Figure 4 In the steam generation system based on the second type of jet-absorption heat pump shown, a third absorber, a third solution pump, a third solution heat exchanger, and a third generator are added. The refrigerant vapor passage of the second generator 16, which was previously connected to the condenser 5, is now connected to the third absorber 19. The third absorber 19 also has a dilute solution pipeline connected to the third generator 22 via the third solution pump 20 and the third solution heat exchanger 21. The third generator 22 also has a concentrated solution pipeline connected to the third absorber 19 via the third solution heat exchanger 21. The third generator 22 also has a refrigerant vapor passage connected to the condenser 5 and a medium-temperature heat medium passage connected to the outside. The third absorber 19 also has a cooling medium passage connected to the outside.

[0054] (2) In terms of process, with Figure 4Compared to the steam generation system based on the second type of jet-absorption heat pump shown, the difference lies in the following: the refrigerant vapor released by the second generator 16 enters the third absorber 19; the dilute solution in the third absorber 19 enters the third generator 22 via the third solution pump 20 and the third solution heat exchanger 21; the medium-temperature heat medium flows through the third generator 22, heats the solution inside, releases refrigerant vapor, and supplies it to the condenser 5; the concentrated solution in the third generator 22 enters the third absorber 19 via the third solution heat exchanger 21, absorbs the refrigerant vapor, and releases heat to the cooling medium, thus forming a steam generation system based on the second type of jet-absorption heat pump.

[0055] Figure 9 The steam generation system based on the second type of jet-absorption heat pump shown is implemented as follows:

[0056] (1) Structurally, in Figure 1 In the steam generation system based on the second type of jet-absorption heat pump shown, the steam generator 9 and its high-temperature heat medium channel connected to the outside are eliminated, the refrigerant steam channel connecting the steam generator 9 and the ejector 10 is eliminated, an external working steam channel is added to connect to the high-pressure steam inlet of the ejector 10, the condensate pipeline connecting the evaporator 7 to the steam generator 9 via the high-pressure pump 8 is eliminated; the condenser 5 is added to the system to connect to the outside via the high-pressure pump 8.

[0057] (2) In terms of process, with Figure 1 Compared with the steam generation system based on the second type of jet-absorption heat pump shown, the difference is that: working steam is supplied to the ejector 10 from the outside, and the condensate of the condenser 5 is divided into two paths - the first path is pressurized by the low-pressure pump 6 and then enters the evaporator 7 to absorb heat, heat up and vaporize, and the second path flows through the high-pressure pump 8 to be pressurized and then discharged to the outside, thus forming a steam generation system based on the second type of jet-absorption heat pump.

[0058] Figure 10 The steam generation system based on the second type of jet-absorption heat pump shown is implemented as follows:

[0059] exist Figure 1 In the steam generation system based on the second type of jet-absorption heat pump shown, a compressor 23 is added, and the refrigerant vapor passage of the evaporator 7 is connected to the low-pressure steam inlet of the ejector 10. The refrigerant vapor passage of the evaporator 7 is then connected to the low-pressure steam inlet of the ejector 10 after passing through the compressor 23. The refrigerant vapor discharged from the evaporator 7 is pressurized and heated by the compressor 23 and then supplied to the ejector 10. External mechanical energy is provided by the compressor 23, thus forming a steam generation system based on the second type of jet-absorption heat pump.

[0060] Figure 11 The steam generation system based on the second type of jet-absorption heat pump shown is implemented as follows:

[0061] exist Figure 1 In the steam generation system based on the second type of jet-absorption heat pump shown, a compressor 23 is added, and the connection between the ejector 10 and the absorber 4 is adjusted so that the ejector 10 has a medium-pressure steam channel that connects to the absorber 4 after passing through the compressor 23; the medium-pressure steam discharged from the ejector 10 flows through the compressor 23 to be pressurized and heated, and then supplied to the absorber 4; external mechanical energy is provided through the compressor 23 to form a steam generation system based on the second type of jet-absorption heat pump.

[0062] The effects achievable by this invention—the steam generation system based on the second type of jet-absorption heat pump proposed in this invention has the following effects and advantages:

[0063] (1) A new technology for the efficient production of steam was created by utilizing high-temperature heat resources, medium-temperature heat resources and ambient cold resources, or by combining them with mechanical energy.

[0064] (2) The process is reasonable and the performance index is reasonable; the structure is simple and the manufacturing cost is low.

[0065] (3) It can realize the deep utilization of low-temperature heat resources and the temperature increase is large.

[0066] (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.

[0067] (5) It expands the range of parameters for user steam and has a wide range of applications.

[0068] (6) Combining injection technology and absorption technology, taking advantage of each other's strengths and compensating for each other's weaknesses, the steam supply range is large.

[0069] (7) It has expanded the application scenarios and application value of jetting technology and absorption technology.

[0070] (8) Provides a variety of specific technical solutions to address many different practical situations, which is conducive to expanding the application scope and use value of steam generation systems based on the second type of jet-absorption heat pump.

Claims

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

2. A steam generation system based on a second type of jet-absorption heat pump is a steam generation system based on a second 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 (11) is removed, and a second high-pressure pump (12) is added. An external liquid medium channel is connected to the steam generator (9) through the second high-pressure pump (12). The steam generator (9) is provided with a working steam channel connected to the high-pressure steam inlet of the second ejector (11), thus forming a steam generation system based on a second type of jet-absorption heat pump.

3. A steam generation system based on a second type of jet-absorption heat pump is a steam generation system based on a second 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 (11) is removed, and a second high-pressure pump (12) and a second steam generator (13) are added. An external liquid medium channel is connected to the second steam generator (13) via the second high-pressure pump (12). The second steam generator (13) also has a working steam channel connected to the high-pressure steam inlet of the second ejector (11), and the second steam generator (13) also has a high-temperature heat medium channel connected to the outside, thus forming a steam generation system based on a second type of jet-absorption heat pump.

4. A steam generation system based on a second type of jet-absorption heat pump is a steam generation system based on a second type of jet-absorption heat pump as described in any of claims 1-3, wherein a second absorber, a second solution pump, a second generator, and a second solution heat exchanger are added. The absorber (4) is connected to the generator (1) via a dilute solution pipeline through the solution heat exchanger (3), and the absorber (4) is connected to the second absorber (14) via a dilute solution pipeline through the solution heat exchanger (3). The second absorber (14) also has a dilute solution pipeline connected to the second generator (16) via a second solution pump (15) and a second solution heat exchanger (17). The second generator (16) has a concentrated solution... The solution pipeline is connected to the generator (1) via the second solution heat exchanger (17). The generator (1) is adjusted so that the refrigerant vapor channel is connected to the condenser (5) and the generator (1) is connected to the second absorber (14). The second generator (16) is also connected to the condenser (5) via the refrigerant vapor channel. The condenser (5) is adjusted so that the condensate pipeline is connected to the evaporator (7) via the low-pressure pump (6) and the condensate pipeline is connected to the evaporator (7) via the low-pressure pump (6) and the second absorber (14). The second generator (16) is also connected to the outside via the medium-temperature heat medium channel, forming a steam generation system based on the second type of jet-absorption heat pump.

5. A steam generation system based on a second type of jet-absorption heat pump is a steam generation system based on a second type of jet-absorption heat pump as described in any of claims 1-3, wherein a second absorber, a second solution pump, a second generator, and a second solution heat exchanger are added. The absorber (4) is connected to the generator (1) via a dilute solution pipeline through the solution heat exchanger (3), and the absorber (4) is connected to the second absorber (14) via a dilute solution pipeline through the solution heat exchanger (3) and the second solution heat exchanger (17). The second absorber (14) is also connected to the second generator (16) via a dilute solution pipeline through the second solution pump (15) and the second solution heat exchanger (17). The second generator (16) is connected to the generator (1) via a concentrated solution pipeline. The generator (1) is connected to the condenser (5) via a refrigerant vapor channel. The generator (1) is then connected to the second absorber (14) via a refrigerant vapor channel. The second generator (16) is also connected to the condenser (5) via a refrigerant vapor channel. The condenser (5) is connected to the evaporator (7) via a condensate pipeline through a low-pressure pump (6). The condenser (5) is then connected to the evaporator (7) via a condensate pipeline through a low-pressure pump (6) and the second absorber (14). The second generator (16) is also connected to the outside via a medium-temperature heat medium channel. This forms a steam generation system based on a second type of jet-absorption heat pump.

6. A steam generation system based on a second type of jet-absorption heat pump is formed by adding a solution throttling valve (18) to any of the steam generation systems based on a second type of jet-absorption heat pump as described in claim 5, and adjusting the connection between the concentrated solution pipeline of the second generator (16) and the generator (1) to be such that the concentrated solution pipeline of the second generator (16) is connected to the generator (1) via the solution throttling valve (18), thereby forming a steam generation system based on a second type of jet-absorption heat pump.

7. A steam generation system based on a second type of jet-absorption heat pump is a steam generation system based on a second type of jet-absorption heat pump as described in any of claims 1-3, wherein a second absorber, a second solution pump, a second generator, and a second solution heat exchanger are added, and the generator (1) is adjusted to have a refrigerant vapor channel connected to the condenser (5) and the generator (1) has a refrigerant vapor channel connected to the second absorber (14), the second absorber (14) also has a dilute solution pipeline connected to the second generator (16) via the second solution pump (15) and the second solution heat exchanger (17), the second generator (16) also has a concentrated solution pipeline connected to the second absorber (14) via the second solution heat exchanger (17), the second generator (16) also has a refrigerant vapor channel connected to the condenser (5), the second generator (16) also has a medium-temperature heat medium channel connected to the outside, and the second absorber (14) also has a cooling medium channel connected to the outside, thus forming a steam generation system based on a second type of jet-absorption heat pump.

8. A steam generation system based on a second type of jet-absorption heat pump is a steam generation system based on a second type of jet-absorption heat pump as described in any of claims 4-6, wherein a third absorber, a third solution pump, a third solution heat exchanger, and a third generator are added. The second generator (16) is adjusted to have a refrigerant vapor channel connected to the condenser (5) and the second generator (16) is connected to the third absorber (19). The third absorber (19) also has a dilute solution pipeline connected to the third generator (22) via the third solution pump (20) and the third solution heat exchanger (21). The third generator (22) also has a concentrated solution pipeline connected to the third absorber (19) via the third solution heat exchanger (21). The third generator (22) also has a refrigerant vapor channel connected to the condenser (5). The third generator (22) also has a medium-temperature heat medium channel connected to the outside. The third absorber (19) also has a cooling medium channel connected to the outside, thus forming a steam generation system based on a second type of jet-absorption heat pump.

9. A steam generation system based on a second type of jet-absorption heat pump is formed by eliminating the steam generator (9) and its high-temperature heat medium channel connected to the outside in any of the steam generation systems based on a second type of jet-absorption heat pump as described in claims 1-8, eliminating the refrigerant steam channel connecting the steam generator (9) and the ejector (10), adding an external working steam channel to connect the high-pressure steam inlet of the ejector (10), eliminating the high-pressure pump (8) and the condensate pipeline connecting the evaporator (7) to the steam generator (9) via the high-pressure pump (8); adding a condensate pipeline to the condenser (5) to connect to the outside, or retaining the high-pressure pump (8) and adding a condensate pipeline to the condenser (5) to connect to the outside via the high-pressure pump (8), thus forming a steam generation system based on a second type of jet-absorption heat pump.

10. The second type of jet-absorption steam generation system is a second type of jet-absorption steam generation system according to any one of the second type of jet-absorption steam generation systems described in claims 1-9, wherein a compressor (23) is added, and the refrigerant vapor passage of the evaporator (7) is connected to the low-pressure steam inlet of the ejector (10) and the refrigerant vapor passage of the evaporator (7) is connected to the low-pressure steam inlet of the ejector (10) after passing through the compressor (23), thus forming the second type of jet-absorption steam generation system.

11. The second type of jet-absorption steam generation system is a second type of jet-absorption steam generation system according to any one of the second type of jet-absorption steam generation systems described in claims 1-9, wherein a compressor (23) is added, and the medium-pressure steam passage of the ejector (10) is connected to the absorber (4) and the medium-pressure steam passage of the ejector (10) is connected to the absorber (4) after passing through the compressor (23), thereby forming the second type of jet-absorption steam generation system.

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