CN117846729A - Single working medium combined cycle steam power device - Google Patents
Single working medium combined cycle steam power device Download PDFInfo
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- CN117846729A CN117846729A CN202311871491.2A CN202311871491A CN117846729A CN 117846729 A CN117846729 A CN 117846729A CN 202311871491 A CN202311871491 A CN 202311871491A CN 117846729 A CN117846729 A CN 117846729A
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Abstract
The invention provides a single working medium combined cycle steam power device, and belongs to the technical field of thermodynamics and thermokinetic. The compressor is provided with a first steam channel which is communicated with the second expander through the heat regenerator, the second expander is also provided with a low-pressure steam channel which is communicated with the evaporator, the compressor is also provided with a second steam channel which is communicated with the heat source heat exchanger, the condenser is provided with a condensate pipe which is communicated with the evaporator through the booster pump, the evaporator is further provided with a steam channel which is communicated with the heat source heat exchanger, the heat source heat exchanger is also provided with a steam channel which is communicated with the expander, the expander is also provided with a low-pressure steam channel which is communicated with the evaporator through the heat regenerator, and the evaporator is provided with a low-pressure steam channel which is divided into two paths, namely, the first path is communicated with the compressor and the second path is communicated with the condenser; the condenser is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger is also provided with a heat source medium channel which is communicated with the outside, and the expander is connected with the compressor and transmits power to form the single-working-medium combined cycle steam power device.
Description
Technical field:
the invention belongs to the technical field of thermodynamics and thermal dynamics.
The background technology is as follows:
power and electricity are two basic and important demands in human life and production; among them, converting thermal energy into mechanical energy is an important technical means for providing power and electricity. In the process of converting thermal energy into mechanical energy, the most basic requirement is to adopt the simplest possible technical measure to realize the high efficiency of thermal work-for this purpose, and the technicians are diligent.
In order to improve the power application value of high-temperature heat load, the average temperature of the heat absorption process of the circulating working medium is improved as much as possible, the temperature and the quantity of heat load discharged by the thermodynamic device are reduced, and the irreversible loss of temperature difference of main heat transfer links in the thermodynamic system is reduced.
In the prior art, the higher the temperature formed by the high-temperature heat load obtained by the circulating working medium, the higher the temperature and the quantity of the circulating working medium discharged by the high-temperature expander are, and the heat transfer temperature difference loss in the thermodynamic system is also increased.
The invention provides a single-working-medium combined cycle steam power device which has reasonable flow, simple structure, small irreversible loss of systematic temperature difference and high thermodynamic perfection, and is based on the basic principle of simply, actively, safely and efficiently utilizing energy to obtain power.
The invention comprises the following steps:
the invention mainly aims to provide a single-working-medium combined cycle steam power device, and the specific invention is described as follows:
1. the single working medium combined cycle steam power device mainly comprises an expander, a second expander, a compressor, a booster pump, a regenerator, a condenser, an evaporator and a heat source heat exchanger; the compressor is provided with a first steam channel which is communicated with the second expander through the heat regenerator, the second expander is also provided with a low-pressure steam channel which is communicated with the evaporator, the compressor is also provided with a second steam channel which is communicated with the heat source heat exchanger, the condenser is provided with a condensate pipe which is communicated with the evaporator through the booster pump, the evaporator is further provided with a steam channel which is communicated with the heat source heat exchanger, the heat source heat exchanger is also provided with a steam channel which is communicated with the expander, the expander is also provided with a low-pressure steam channel which is communicated with the evaporator through the heat regenerator, and the evaporator is also provided with a low-pressure steam channel which is divided into two paths, namely, the first path is communicated with the compressor and the second path is communicated with the condenser; the condenser is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger is also provided with a heat source medium channel which is communicated with the outside, and the expander is connected with the compressor and transmits power to form a single-working-medium combined cycle steam power device; wherein, or the expander is connected with the compressor and the booster pump and transmits power.
2. The single working medium combined cycle steam power device mainly comprises an expander, a second expander, a compressor, a booster pump, a regenerator, a condenser, an evaporator and a heat source heat exchanger; the compressor is provided with a first steam channel which is communicated with the second expander through the heat regenerator, the second expander is also provided with a low-pressure steam channel which is communicated with the evaporator, the compressor is also provided with a second steam channel which is communicated with the heat source heat exchanger, the condenser is provided with a condensate pipe which is communicated with the evaporator through the booster pump, the evaporator is further provided with a steam channel which is communicated with the heat source heat exchanger, the heat source heat exchanger is also provided with a steam channel which is communicated with the expander, the expander is also provided with a low-pressure steam channel which is communicated with the evaporator after being communicated with the heat regenerator, and the evaporator is also provided with a low-pressure steam channel which is divided into two paths, namely, the first path is communicated with the compressor and the second path is communicated with the condenser; the condenser is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger is also provided with a heat source medium channel which is communicated with the outside, and the expander is connected with the compressor and transmits power to form a single-working-medium combined cycle steam power device; wherein, or the expander is connected with the compressor and the booster pump and transmits power.
3. The single working medium combined cycle steam power device mainly comprises an expander, a second expander, a compressor, a booster pump, a heat regenerator, a condenser, an evaporator, a heat source heat exchanger and a second heat regenerator; the compressor is provided with a first steam channel which is communicated with the second expander through a heat regenerator, the second expander is also provided with a low-pressure steam channel which is communicated with the evaporator, the compressor is also provided with a second steam channel which is communicated with the heat source heat exchanger through the second heat regenerator, the condenser is provided with a condensate pipe which is communicated with the evaporator through a booster pump, the evaporator is further provided with a steam channel which is communicated with the heat source heat exchanger through the second heat regenerator, the heat source heat exchanger is also provided with a steam channel which is communicated with the expander, the expander is also provided with a low-pressure steam channel which is communicated with the evaporator through the second heat regenerator and the heat regenerator, and the evaporator is also provided with a low-pressure steam channel which is divided into two paths, namely, the first path is communicated with the compressor and the second path is communicated with the condenser; the condenser is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger is also provided with a heat source medium channel which is communicated with the outside, and the expander is connected with the compressor and transmits power to form a single-working-medium combined cycle steam power device; wherein, or the expander is connected with the compressor and the booster pump and transmits power.
4. The single working medium combined cycle steam power device mainly comprises an expander, a second expander, a compressor, a booster pump, a heat regenerator, a condenser, an evaporator, a heat source heat exchanger and a second heat regenerator; the compressor is provided with a first steam channel which is communicated with the second expander through a heat regenerator, the second expander is also provided with a low-pressure steam channel which is communicated with the evaporator, the compressor is also provided with a second steam channel which is communicated with the heat source heat exchanger through the second heat regenerator, the condenser is provided with a condensate pipe which is communicated with the evaporator through a booster pump and then is communicated with the heat source heat exchanger through the second heat regenerator, the heat source heat exchanger is also provided with a steam channel which is communicated with the expander, the expander is also provided with a low-pressure steam channel which is communicated with the evaporator through the heat regenerator after being communicated with the second heat regenerator, and the evaporator is also provided with a low-pressure steam channel which is divided into two paths, namely a first path which is communicated with the compressor and a second path which is communicated with the condenser; the condenser is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger is also provided with a heat source medium channel which is communicated with the outside, and the expander is connected with the compressor and transmits power to form a single-working-medium combined cycle steam power device; wherein, or the expander is connected with the compressor and the booster pump and transmits power.
5. A single working medium combined cycle steam power plant is characterized in that in any one of the single working medium combined cycle steam power plants in the 1 st to 4 th, a second booster pump and a low-temperature heat regenerator are added, a condenser condensate pipe is communicated with the booster pump and is adjusted to be communicated with the low-temperature heat regenerator through the second booster pump, a steam extraction channel is additionally arranged on a compressor and is communicated with the low-temperature heat regenerator, and a condensate pipe is further communicated with the booster pump by the low-temperature heat regenerator, so that the single working medium combined cycle steam power plant is formed.
6. A single working medium combined cycle steam power device is formed by adding a second evaporator and a diffuser pipe in any one of the single working medium combined cycle steam power devices in the 1 st, the 3 rd and the 4 th, adjusting the communication between a low-pressure steam channel of a regenerator and the evaporator to be the communication between the low-pressure steam channel of the regenerator and the second evaporator through the evaporator, adjusting the communication between the low-pressure steam channel of the second expander and the evaporator to be the communication between the low-pressure steam channel of the second expander and the second evaporator through the evaporator, adjusting the communication between the low-pressure steam channel of the evaporator and the compressor respectively to be the communication between the low-pressure steam channel of the second evaporator and the compressor respectively, adjusting the communication between the condensate pipe of the condenser and the evaporator through the booster pump to be the communication between the condensate pipe of the condenser and the second evaporator through the booster pump and the diffuser pipe to be the wet steam channel of the second evaporator.
7. A single working medium combined cycle steam power device is formed by adding a second evaporator and a diffuser pipe in the single working medium combined cycle steam power device in the 2 nd step, adjusting the communication between an expander with a low-pressure steam channel and the evaporator to be that the expander with the low-pressure steam channel is communicated with the second evaporator through the evaporator, adjusting the communication between the second expander with the low-pressure steam channel and the evaporator to be that the second expander with the low-pressure steam channel is communicated with the second evaporator through the evaporator, adjusting the communication between the evaporator with the low-pressure steam channel and the compressor respectively to be that the second evaporator with the low-pressure steam channel is communicated with the compressor and the condenser respectively, adjusting the communication between the condenser with a condensate pipe and the evaporator to be that the condenser with the condensate pipe is communicated with the second evaporator through the booster pump, and then, adjusting the second evaporator with a wet steam channel to be communicated with the evaporator through the diffuser pipe.
8. The single-working-medium combined cycle steam power plant is formed by adding an expansion speed increaser and replacing the expansion machine, adding a second expansion speed increaser and replacing the second expansion machine, adding a dual-energy compressor and replacing the compressor, adding a newly added diffuser pipe and replacing the booster pump in any one of the single-working-medium combined cycle steam power plants of the 1 st to 7 th.
Description of the drawings:
FIG. 1 is a schematic thermodynamic system diagram of a single-working-medium combined cycle steam power plant according to the present invention.
Fig. 2 is a schematic thermodynamic system diagram of a single-working-medium combined cycle steam power plant according to the present invention.
FIG. 3 is a schematic thermodynamic system diagram of a single-working-medium combined cycle steam power plant according to the present invention, no. 3.
Fig. 4 is a schematic thermodynamic system diagram of a single-working-medium combined cycle steam power plant according to the invention, no. 4.
Fig. 5 is a schematic thermodynamic system diagram of a single-working-medium combined cycle steam power plant according to the invention.
FIG. 6 is a schematic thermodynamic system diagram of a single-working-medium combined cycle steam power plant according to the present invention.
FIG. 7 is a schematic thermodynamic system diagram of a single-working-medium combined cycle steam power plant according to the present invention.
In the figure, a 1-expander, a 2-second expander, a 3-compressor, a 4-booster pump, a 5-regenerator, a 6-condenser, a 7-evaporator, an 8-heat source heat exchanger, a 9-second regenerator, a 10-second booster pump, a 11-low temperature regenerator, a 12-second evaporator and a 13-diffusion pipe are arranged; a-expansion speed increaser, B-second expansion speed increaser, C-dual-energy compressor and D-newly added diffuser.
The specific embodiment is as follows:
it is to be noted that the description of the structure and the flow is not repeated if necessary; obvious procedures are not described. The invention is described in detail below with reference to the drawings and examples.
The single-working-medium combined cycle steam power plant shown in fig. 1 is realized by the following steps:
(1) Structurally, the heat pump mainly comprises an expander, a second expander, a compressor, a booster pump, a regenerator, a condenser, an evaporator and a heat source heat exchanger; the compressor 3 is provided with a first steam channel which is communicated with the second expander 2 through the heat regenerator 5, the second expander 2 is also provided with a low-pressure steam channel which is communicated with the evaporator 7, the compressor 3 is also provided with a second steam channel which is communicated with the heat source heat exchanger 8, the condenser 6 is provided with a condensate pipeline which is communicated with the evaporator 7 through the booster pump 4, then the evaporator 7 is further provided with a steam channel which is communicated with the heat source heat exchanger 8, the heat source heat exchanger 8 is also provided with a steam channel which is communicated with the expander 1, the expander 1 is also provided with a low-pressure steam channel which is communicated with the evaporator 7 through the heat regenerator 5, and the evaporator 7 is also provided with a low-pressure steam channel which is divided into two paths, namely, the first path is communicated with the compressor 3 and the second path is communicated with the condenser 6; the condenser 6 also has a cooling medium passage communicating with the outside, and the heat source heat exchanger 8 also has a heat source medium passage communicating with the outside, and the expander 1 is connected to the compressor 3 and transmits power.
(2) In the flow, part of low-pressure steam discharged by the evaporator 7 enters the compressor 3 to be boosted and heated to a certain extent and then is divided into two paths, wherein the first path is used for absorbing heat and heating through the heat regenerator 5 and is used for providing power after being subjected to depressurization and working through the second expander 2 to the evaporator 7, and the second path is used for continuously boosting and heating and then enters the heat source heat exchanger 8 for absorbing heat and heating; the condensate discharged by the condenser 6 is boosted by the booster pump 4, is heated and vaporized by the heat absorption of the evaporator 7, and then enters the heat source heat exchanger 8 to absorb heat and raise temperature; the steam discharged by the heat source heat exchanger 8 is subjected to pressure reduction and work through the expander 1, is subjected to heat release and temperature reduction through the heat regenerator 5, and is then supplied to the evaporator 7; the low-pressure steam discharged by the heat regenerator 5 and the second expander 2 flows through the evaporator 7 to release heat and cool, and then is divided into two paths, wherein the first path enters the compressor 3 to raise the pressure and the temperature, and the second path enters the condenser 6 to release heat and condense; the heat source medium provides driving heat load through the heat source heat exchanger 8, and the cooling medium takes away low-temperature heat load through the condenser 6; work output by the expander 1 and the second expander 2 is provided for the compressor 3 and external acting force, or work output by the expander 1 and the second expander 2 is provided for the compressor 3, the booster pump 4 and external acting force, so that the single-working-medium combined cycle steam power device is formed.
The single-working-medium combined cycle steam power plant shown in fig. 2 is realized by the following steps:
(1) Structurally, the heat pump mainly comprises an expander, a second expander, a compressor, a booster pump, a regenerator, a condenser, an evaporator and a heat source heat exchanger; the compressor 3 has the first steam channel to communicate with the second expander 2 through the regenerator 5, the second expander 2 has the low-pressure steam channel to communicate with evaporator 7, the compressor 3 has the second steam channel to communicate with heat source heat exchanger 8, the condenser 6 has condensate pipeline to communicate with evaporator 7 through booster pump 4, after the evaporator 7 has the steam channel to communicate with heat source heat exchanger 8, the heat source heat exchanger 8 has the steam channel to communicate with expander 1, the expander 1 has the steam channel to communicate with oneself through the regenerator 5, the expander 1 has the low-pressure steam channel to communicate with evaporator 7 again, the evaporator 7 has the low-pressure steam channel to divide into two ways-the first way communicates with compressor 3 and the second way communicates with condenser 6; the condenser 6 also has a cooling medium passage communicating with the outside, and the heat source heat exchanger 8 also has a heat source medium passage communicating with the outside, and the expander 1 is connected to the compressor 3 and transmits power.
(2) In flow, compared with the single-working-medium combined cycle steam power plant shown in fig. 1, the difference is that: the steam discharged by the heat source heat exchanger 8 enters the expander 1 to perform decompression and work, flows through the regenerator 5 to release heat and cool to a certain extent, enters the expander 1 to continue decompression and work, and then is provided for the evaporator 7 to form the single working medium combined cycle steam power device.
The single-working-medium combined cycle steam power plant shown in fig. 3 is realized by the following steps:
(1) Structurally, the device mainly comprises an expander, a second expander, a compressor, a booster pump, a heat regenerator, a condenser, an evaporator, a heat source heat exchanger and a second heat regenerator; the compressor 3 is provided with a first steam channel which is communicated with the second expander 2 through the heat regenerator 5, the second expander 2 is also provided with a low-pressure steam channel which is communicated with the evaporator 7, the compressor 3 is also provided with a second steam channel which is communicated with the heat source heat exchanger 8 through the second heat regenerator 9, the condenser 6 is provided with a condensate pipeline which is communicated with the evaporator 7 through the booster pump 4, the evaporator 7 is also provided with a steam channel which is communicated with the heat source heat exchanger 8 through the second heat regenerator 9 after being communicated with the evaporator 7, the heat source heat exchanger 8 is also provided with a steam channel which is communicated with the expander 1, the expander 1 is also provided with a low-pressure steam channel which is communicated with the evaporator 7 through the second heat regenerator 9 and the heat regenerator 5, and the evaporator 7 is also provided with a low-pressure steam channel which is divided into two paths, namely a first path which is communicated with the compressor 3 and a second path which is communicated with the condenser 6; the condenser 6 also has a cooling medium passage communicating with the outside, and the heat source heat exchanger 8 also has a heat source medium passage communicating with the outside, and the expander 1 is connected to the compressor 3 and transmits power.
(2) In flow, compared with the single-working-medium combined cycle steam power plant shown in fig. 1, the difference is that: the high-pressure steam discharged from the evaporator 7 and the compressor 3 flows through the second regenerator 9 to absorb heat and raise temperature, and then is supplied to the heat source heat exchanger 8; the low-pressure steam discharged by the expander 1 flows through the second heat regenerator 9, the heat regenerator 5 and the evaporator 7 to release heat and cool gradually, so that the single-working-medium combined cycle steam power device is formed.
The single-working-medium combined cycle steam power plant shown in fig. 4 is realized by the following steps:
(1) Structurally, the device mainly comprises an expander, a second expander, a compressor, a booster pump, a heat regenerator, a condenser, an evaporator, a heat source heat exchanger and a second heat regenerator; the compressor 3 is provided with a first steam channel which is communicated with the second expander 2 through the heat regenerator 5, the second expander 2 is also provided with a low-pressure steam channel which is communicated with the evaporator 7, the compressor 3 is also provided with a second steam channel which is communicated with the heat source heat exchanger 8 through the second heat regenerator 9, the condenser 6 is provided with a condensate pipeline which is communicated with the evaporator 7 through the booster pump 4, then the evaporator 7 is further provided with a steam channel which is communicated with the heat source heat exchanger 8 through the second heat regenerator 9, the heat source heat exchanger 8 is also provided with a steam channel which is communicated with the expander 1, the expander 1 is further provided with a low-pressure steam channel which is communicated with the evaporator 7 through the heat regenerator 5 after being communicated with the expander 1 through the second heat regenerator 9, and the evaporator 7 is also provided with a low-pressure steam channel which is divided into two paths, namely a first path which is communicated with the compressor 3 and a second path which is communicated with the condenser 6; the condenser 6 also has a cooling medium passage communicating with the outside, and the heat source heat exchanger 8 also has a heat source medium passage communicating with the outside, and the expander 1 is connected to the compressor 3 and transmits power.
(2) In flow, compared with the single-working-medium combined cycle steam power plant shown in fig. 1, the difference is that: the high-pressure steam discharged from the evaporator 7 and the compressor 3 flows through the second regenerator 9 to absorb heat and raise temperature, and then is supplied to the heat source heat exchanger 8; the steam discharged by the heat source heat exchanger 8 enters the expander 1 to perform decompression and work, flows through the second heat regenerator 9 to release heat and cool to a certain extent, enters the expander 1 to continue decompression and work, flows through the heat regenerator 5 to release heat and cool and is provided for the evaporator 7, and the single working medium combined cycle steam power device is formed.
The single-working-medium combined cycle steam power plant shown in fig. 5 is realized by the following steps:
(1) In the single-working-medium combined cycle steam power device shown in fig. 1, a second booster pump and a low-temperature heat regenerator are added, a condensate pipe of a condenser 6 is communicated with the booster pump 4, the condensate pipe of the condenser 6 is communicated with the low-temperature heat regenerator 11 through a second booster pump 10, a steam extraction channel is additionally arranged on the compressor 3 and is communicated with the low-temperature heat regenerator 11, and the condensate pipe of the low-temperature heat regenerator 11 is communicated with the booster pump 4.
(2) In flow, compared with the single-working-medium combined cycle steam power plant shown in fig. 1, the difference is that: the condensate discharged by the condenser 6 flows through the second booster pump 10 to be boosted and then enters the low-temperature regenerator 11 to be mixed with the extracted steam from the compressor 3, absorbs heat and heats up, and the extracted steam is released to form condensate; condensate of the low-temperature heat regenerator 11 flows through the booster pump 4 to boost pressure, and then enters the evaporator 7 to absorb heat to raise temperature and vaporize; the low-pressure steam discharged by the heat regenerator 5 and the second expander 2 flows through the evaporator 7 to release heat and cool, and then is divided into two paths, wherein the first path enters the compressor 3 to raise the pressure and the temperature, and the second path enters the condenser 6 to release heat and condense; the low-pressure steam enters the compressor 3 to be boosted and heated to a certain extent, and then is divided into two paths, namely a first path is provided for the low-temperature heat regenerator 11, and a second path is divided into two paths after the boosting and the heating are continued, namely the first path is provided for the heat regenerator 5 and the second path enters the heat source heat exchanger 8, so that the single working medium combined cycle steam power device is formed.
The single-working-medium combined cycle steam power plant shown in fig. 6 is realized by the following steps:
(1) In the single-working-medium combined cycle steam power plant shown in fig. 1, a second evaporator and a diffuser pipe are added, the communication between a low-pressure steam channel of the regenerator 5 and the evaporator 7 is adjusted to be that the low-pressure steam channel of the regenerator 5 is communicated with the second evaporator 12 through the evaporator 7, the communication between the low-pressure steam channel of the second expander 2 and the evaporator 7 is adjusted to be that the low-pressure steam channel of the second expander 2 is communicated with the second evaporator 12 through the evaporator 7, the communication between the low-pressure steam channel of the evaporator 7 and the compressor 3 and the condenser 6 is respectively adjusted to be that the low-pressure steam channel of the second evaporator 12 is respectively communicated with the compressor 3 and the condenser 6, the communication between the condenser 6 and the evaporator 7 through the booster pump 4 is adjusted to be that the condensate channel of the condenser 6 is communicated with the second evaporator 12 through the booster pump 4, and then the wet steam channel of the second evaporator 12 is communicated with the evaporator 7 through the diffuser pipe 13.
(2) In flow, compared with the single-working-medium combined cycle steam power plant shown in fig. 1, the difference is that: the condensate discharged by the condenser 6 is boosted by the booster pump 4, is subjected to heat absorption and temperature rise, partial vaporization and speed increase by the second evaporator 12, is subjected to speed reduction and pressure boost by the diffuser pipe 13, and then enters the evaporator 7 to absorb heat and vaporization; low-pressure steam discharged by the heat regenerator 5 and the second expander 2 is gradually released and cooled through the evaporator 7 and the second evaporator 12, and then respectively enters the compressor 3 for boosting and heating and the condenser 6 for releasing heat and condensing, so that the single-working-medium combined cycle steam power device is formed.
The single-working-medium combined cycle steam power plant shown in fig. 7 is realized by the following steps:
(1) Structurally, in the single-working-medium combined cycle steam power plant shown in fig. 1, an expansion speed increaser a is added to replace an expander 1, a second expansion speed increaser B is added to replace a second expander 2, a dual-energy compressor C is added to replace a compressor 3, and a new diffuser pipe D is added to replace a booster pump 4.
(2) In flow, compared with the single-working-medium combined cycle steam power plant shown in fig. 1, the difference is that: part of low-pressure steam discharged by the evaporator 7 enters the dual-energy compressor C to be boosted, heated and decelerated to a certain extent and then is divided into two paths, wherein the first path is subjected to heat absorption and heating through the heat regenerator 5, and the second path is subjected to depressurization, work and acceleration through the second expansion speed increaser B and then is provided for the evaporator 7, and the second path is subjected to heat absorption and heating through the heat source heat exchanger 8 after the second path is subjected to continuous boosting and heating; condensate discharged by the condenser 6 flows through the newly added diffuser pipe D to be reduced in speed and boosted, flows through the evaporator 7 to absorb heat and evaporate, and then enters the heat source heat exchanger 8 to absorb heat and raise temperature; the steam discharged by the heat source heat exchanger 8 flows through the expansion speed increaser A to perform decompression, work and speed reduction, flows through the heat regenerator 5 to release heat and reduce temperature, and then is supplied to the evaporator 7; the low-pressure steam discharged by the heat regenerator 5 and the second expansion speed increaser B flows through the evaporator 7 to release heat and cool, and then is divided into two paths, wherein the first path enters the dual-energy compressor C to raise the pressure and raise the temperature and reduce the speed, and the second path enters the condenser 6 to release heat and condense; the work output by the expansion speed increaser A and the second expansion speed increaser B is provided for the dual-energy compressor C and external acting force to form the single-working-medium combined cycle steam power device.
The single-working-medium combined cycle steam power device provided by the invention has the following effects and advantages:
(1) And the cyclic working medium acquires the heat absorption link of high-temperature heat load, so that the irreversible loss of temperature difference is small, and the heat efficiency is improved.
(2) The utilization degree of the temperature difference in the back heating link between gases (steam) is high, and the heat-changing work efficiency is improved.
(3) And in the regenerative link of the gas (steam) working medium and the liquid working medium, the flow rate of the gas working medium is large, the temperature change interval is relatively narrow, the irreversible loss of the temperature difference is reduced, and the heat-changing work efficiency is improved.
(4) The constant temperature realizes low-temperature heat load discharge, the temperature difference loss is small, and the heat change work efficiency is improved.
(5) By utilizing the characteristics of working media, the temperature difference utilization level in the heat transfer process is obviously improved by adopting a simple technical means, and the heat efficiency is improved.
(6) The process is reasonable, the structure is simple, the manufacturing cost of the single-working-medium combined cycle steam power plant is obviously reduced, and the economical efficiency of the system is improved.
(7) And a plurality of heat regeneration technical means are provided, and the coordination of the device in the aspects of power, thermal efficiency, step-up ratio and the like is effectively improved.
(8) The method provides a plurality of specific technical schemes, is beneficial to improving the reasonable utilization level of energy and expanding the application range and the value of the single-working-medium combined cycle steam power plant.
Claims (8)
1. The single working medium combined cycle steam power device mainly comprises an expander, a second expander, a compressor, a booster pump, a regenerator, a condenser, an evaporator and a heat source heat exchanger; the compressor (3) is provided with a first steam channel which is communicated with the second expander (2) through the heat regenerator (5), the second expander (2) is also provided with a low-pressure steam channel which is communicated with the evaporator (7), the compressor (3) is also provided with a second steam channel which is communicated with the heat source heat exchanger (8), the condenser (6) is provided with a condensate pipeline which is communicated with the evaporator (7) through the booster pump (4), the evaporator (7) is also provided with a steam channel which is communicated with the heat source heat exchanger (8), the heat source heat exchanger (8) is also provided with a steam channel which is communicated with the expander (1), the expander (1) is also provided with a low-pressure steam channel which is communicated with the evaporator (7) through the heat regenerator (5), and the evaporator (7) is also provided with a low-pressure steam channel which is divided into two paths, namely a first path which is communicated with the compressor (3) and a second path which is communicated with the condenser (6); the condenser (6) is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger (8) is also provided with a heat source medium channel which is communicated with the outside, and the expander (1) is connected with the compressor (3) and transmits power to form a single-working-medium combined cycle steam power device; wherein, or the expander (1) is connected with the compressor (3) and the booster pump (4) and transmits power.
2. The single working medium combined cycle steam power device mainly comprises an expander, a second expander, a compressor, a booster pump, a regenerator, a condenser, an evaporator and a heat source heat exchanger; the compressor (3) is provided with a first steam channel which is communicated with the second expander (2) through the heat regenerator (5), the second expander (2) is also provided with a low-pressure steam channel which is communicated with the evaporator (7), the compressor (3) is also provided with a second steam channel which is communicated with the heat source heat exchanger (8), the condenser (6) is provided with a condensate pipeline which is communicated with the evaporator (7) through the booster pump (4), the evaporator (7) is further provided with a steam channel which is communicated with the heat source heat exchanger (8), the heat source heat exchanger (8) is also provided with a steam channel which is communicated with the expander (1), the expander (1) is further provided with a low-pressure steam channel which is communicated with the evaporator (7) after the heat regenerator (5) is communicated with the expander, and the evaporator (7) is also provided with the low-pressure steam channel which is divided into two paths, namely a first path which is communicated with the compressor (3) and a second path which is communicated with the condenser (6); the condenser (6) is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger (8) is also provided with a heat source medium channel which is communicated with the outside, and the expander (1) is connected with the compressor (3) and transmits power to form a single-working-medium combined cycle steam power device; wherein, or the expander (1) is connected with the compressor (3) and the booster pump (4) and transmits power.
3. The single working medium combined cycle steam power device mainly comprises an expander, a second expander, a compressor, a booster pump, a heat regenerator, a condenser, an evaporator, a heat source heat exchanger and a second heat regenerator; the compressor (3) is provided with a first steam channel which is communicated with the second expander (2) through the heat regenerator (5), the second expander (2) is also provided with a low-pressure steam channel which is communicated with the evaporator (7), the compressor (3) is also provided with a second steam channel which is communicated with the heat source heat exchanger (8) through the second heat regenerator (9), the condenser (6) is provided with a condensate pipeline which is communicated with the evaporator (7) through the booster pump (4), the evaporator (7) is further provided with a steam channel which is communicated with the heat source heat exchanger (8) through the second heat regenerator (9), the heat source heat exchanger (8) is also provided with a steam channel which is communicated with the expander (1), the expander (1) is also provided with a low-pressure steam channel which is communicated with the evaporator (7) through the second heat regenerator (9) and the heat regenerator (5), and the evaporator (7) is also provided with a low-pressure steam channel which is divided into two paths, namely a first path which is communicated with the compressor (3) and a second path which is communicated with the condenser (6); the condenser (6) is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger (8) is also provided with a heat source medium channel which is communicated with the outside, and the expander (1) is connected with the compressor (3) and transmits power to form a single-working-medium combined cycle steam power device; wherein, or the expander (1) is connected with the compressor (3) and the booster pump (4) and transmits power.
4. The single working medium combined cycle steam power device mainly comprises an expander, a second expander, a compressor, a booster pump, a heat regenerator, a condenser, an evaporator, a heat source heat exchanger and a second heat regenerator; the compressor (3) is provided with a first steam channel which is communicated with the second expander (2) through the heat regenerator (5), the second expander (2) is also provided with a low-pressure steam channel which is communicated with the evaporator (7), the compressor (3) is also provided with a second steam channel which is communicated with the heat source heat exchanger (8) through the second heat regenerator (9), the condenser (6) is provided with a condensate pipeline which is communicated with the evaporator (7) through the booster pump (4), the evaporator (7) is further provided with a steam channel which is communicated with the heat source heat exchanger (8) through the second heat regenerator (9), the heat source heat exchanger (8) is also provided with a steam channel which is communicated with the expander (1), the expander (1) is further provided with a low-pressure steam channel which is communicated with the evaporator (7) through the heat regenerator (5), and the evaporator (7) is also provided with a low-pressure steam channel which is divided into two paths, namely a first path which is communicated with the compressor (3) and a second path which is communicated with the condenser (6); the condenser (6) is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger (8) is also provided with a heat source medium channel which is communicated with the outside, and the expander (1) is connected with the compressor (3) and transmits power to form a single-working-medium combined cycle steam power device; wherein, or the expander (1) is connected with the compressor (3) and the booster pump (4) and transmits power.
5. A single working medium combined cycle steam power device is characterized in that a second booster pump and a low-temperature heat regenerator are added in any single working medium combined cycle steam power device according to claims 1-4, a condensate pipe of a condenser (6) is communicated with the booster pump (4) and is adjusted to be communicated with the low-temperature heat regenerator (11) through a second booster pump (10), a steam extraction channel is additionally arranged in a compressor (3) and is communicated with the low-temperature heat regenerator (11), and a condensate pipe of the low-temperature heat regenerator (11) is communicated with the booster pump (4) to form the single working medium combined cycle steam power device.
6. In any one of the single-working-medium combined cycle steam power devices in claims 1, 3 and 4, a second evaporator and a diffuser pipe are added, the low-pressure steam channel of the regenerator (5) is communicated with the evaporator (7) and is regulated to be communicated with the second evaporator (12) through the evaporator (7), the low-pressure steam channel of the second expander (2) is communicated with the evaporator (7) and is regulated to be communicated with the second evaporator (2) through the evaporator (7), the low-pressure steam channel of the evaporator (7) is communicated with the second evaporator (12) through the evaporator (7), the low-pressure steam channel of the evaporator (7) is respectively communicated with the compressor (3) and the condenser (6) and is regulated to be communicated with the compressor (3) and the condenser (6), the condensate pipe of the condenser (6) is communicated with the second evaporator (12) through the booster pump (4) and is regulated to be communicated with the condensate pipe of the condenser (6) through the booster pump (4) and is communicated with the second evaporator (12), and then the single-working-medium combined cycle steam power device is formed through the second evaporator (13).
7. In the single-working-medium combined cycle steam power device, a second evaporator and a diffuser pipe are added in the single-working-medium combined cycle steam power device according to claim 2, the low-pressure steam channel of the expander (1) is communicated with the evaporator (7) and is regulated to be communicated with the expander (1) through the evaporator (7) and the second evaporator (12), the low-pressure steam channel of the second expander (2) is communicated with the evaporator (7) and is regulated to be communicated with the second evaporator (12) through the evaporator (7), the low-pressure steam channel of the evaporator (7) is respectively communicated with the compressor (3) and the condenser (6) and is regulated to be communicated with the low-pressure steam channel of the second evaporator (12) through the compressor (3) and the condenser (6), the condensate pipe of the condenser (6) is communicated with the evaporator (7) through a pressure booster pump (4) and is regulated to be communicated with the condenser (6) through the condensate pipe and is communicated with the second evaporator (12) through the pressure booster pump (4) and then is communicated with the second evaporator (12) through the second evaporator (12) and is further communicated with the single-working medium (13) through the single-working-medium combined cycle steam power device.
8. A single-working-medium combined cycle steam power device is formed by adding an expansion speed increaser (A) and replacing the expansion machine (1), adding a second expansion speed increaser (B) and replacing the second expansion machine (2), adding a dual-energy compressor (C) and replacing the compressor (3), adding a newly added diffuser pipe (D) and replacing the booster pump (4) in any one of the single-working-medium combined cycle steam power devices described in claims 1-7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2022117441082 | 2022-12-30 | ||
| CN202211744108 | 2022-12-30 |
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| CN202311871491.2A Pending CN117846729A (en) | 2022-12-30 | 2023-12-29 | Single working medium combined cycle steam power device |
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| CN (1) | CN117846729A (en) |
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