CN118327728A - Photo-thermal driving single-working-medium combined cycle steam power device - Google Patents
Photo-thermal driving single-working-medium combined cycle steam power device Download PDFInfo
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Abstract
The invention provides a photo-thermal driven single-working-medium combined cycle steam power device, and belongs to the technical field of thermodynamics and thermal dynamics. 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 solar heat collection system, the condenser is provided with a condensate pipe which is communicated with the evaporator through the booster pump, then the evaporator is provided with a steam channel which is communicated with the solar heat collection system, the solar heat collection system 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 provided with a cooling medium channel which is communicated with the outside, and the expander is connected with the compressor and transmits power to form the photo-thermal driving 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 demands in human life and production; the realization of thermal work by utilizing high-temperature photo-thermal is more and more emphasized, but under the current technical condition, when the photo-thermal is used as independent driving energy, the temperature difference loss is large, the thermal efficiency is relatively low, and the power and electric power application value of the photo-thermal needs to be further improved.
In order to increase the thermal efficiency, it is necessary to bring the circulating medium to as high a temperature as possible after the high-temperature load is obtained; however, at this time, the temperature of the circulating working medium discharged by the high-temperature expander is increased, the heat discharge is increased, and the heat transfer temperature difference loss in the thermodynamic system is increased, which has an adverse effect on the improvement of the heat-variable work efficiency.
The invention provides a photo-thermal driving 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 photo-thermal driving single-working-medium combined cycle steam power device, and the specific invention is described in the following items:
1. The photo-thermal driving 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 and a solar heat collection system; 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 solar heat collection system, the condenser is provided with a condensate pipe which is communicated with the evaporator through the booster pump, then the evaporator is provided with a steam channel which is communicated with the solar heat collection system, the solar heat collection system 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, and the expander is connected with the compressor and transmits power to form a photo-thermal driving 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 photo-thermal driving 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 and a solar heat collection system; the compressor is provided with a first steam channel which is communicated with a 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 solar heat collection system, the condenser is provided with a condensate pipe which is communicated with the evaporator through a booster pump, then the evaporator is provided with a steam channel which is communicated with the solar heat collection system, the solar heat collection system is also provided with a steam channel which is communicated with the expander, the expander is also provided with a steam channel which is communicated with the evaporator through the heat regenerator, then the expander is provided with a low-pressure steam channel which is communicated with the evaporator, 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, and the expander is connected with the compressor and transmits power to form a photo-thermal driving 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 photo-thermal driving 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 solar heat collection system and a second heat regenerator; 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 solar heat collection system through the second heat regenerator, 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 solar heat collection system through the second heat regenerator, the solar heat collection system 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 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, and the expander is connected with the compressor and transmits power to form a photo-thermal driving 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 photo-thermal driving 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 solar heat collection system and a second heat regenerator; the compressor is provided with a first steam channel which is communicated with a 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 solar heat collection system 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 solar heat collection system through the second heat regenerator, the solar heat collection system 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 the steam channel is communicated with the expander through the second heat regenerator, and the evaporator is further 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, and the expander is connected with the compressor and transmits power to form a photo-thermal driving 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 photo-thermal driving single-working-medium combined cycle steam power device is formed by adding a second booster pump and a low-temperature heat regenerator in any one of the photo-thermal driving single-working-medium combined cycle steam power devices in the 1 st to 4 th modes, adjusting the communication between a condenser with a condensate pipe and the booster pump to be that the condenser with the condensate pipe is communicated with the low-temperature heat regenerator through the second booster pump, and adding a steam extraction channel to the compressor to be communicated with the low-temperature heat regenerator, wherein the low-temperature heat regenerator is further communicated with the booster pump through the condensate pipe.
6. A photo-thermal driving single-working-medium combined cycle steam power device is formed by adding a second evaporator and a diffusion pipe in any one of the photo-thermal driving single-working-medium combined cycle steam power devices in the 1 st, the 3 rd and the 4 th, adjusting the communication between a regenerator with a low-pressure steam channel and the evaporator to be the communication between the regenerator with the low-pressure steam channel and the second evaporator through the evaporator, adjusting the communication between the second expander with the low-pressure steam channel and the evaporator to be the communication between the second expander with the low-pressure steam channel and the second evaporator through the evaporator, adjusting the communication between the evaporator with the low-pressure steam channel and the compressor respectively to be the communication between the second evaporator with the low-pressure steam channel and the compressor respectively, adjusting the communication between the condenser with a condensate pipe and the evaporator through the booster pump to be the communication between the condenser with the condensate pipe and the second evaporator, and then adjusting the second evaporator with a wet steam channel through the pipe.
7. A photo-thermal driving single-working-medium combined cycle steam power device is formed by adding a second evaporator and a diffuser pipe in the photo-thermal driving 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 the communication between the expander with the low-pressure steam channel and the second evaporator through the evaporator, adjusting the communication between the second expander with the low-pressure steam channel and the evaporator to be the communication between the second expander with the low-pressure steam channel and the evaporator through the evaporator, adjusting the communication between the evaporator with the low-pressure steam channel and the compressor respectively to be the communication between the condenser with the low-pressure steam channel and the condenser respectively, adjusting the communication between the condenser with a condensate pipe and the evaporator through the booster pump to be the communication between the condenser with the condensate pipe and the second evaporator through the booster pump, and then adjusting the second evaporator with a wet steam channel through the diffuser pipe.
8. The photo-thermal driving single-working-medium combined cycle steam power device is characterized in that in any one of the photo-thermal driving single-working-medium combined cycle steam power devices in the 1 st to 7 th, an expansion speed increaser is added to replace the expansion machine, a second expansion speed increaser is added to replace the second expansion machine, a dual-energy compressor is added to replace the compressor, a newly added diffuser pipe is added to replace the booster pump, and the photo-thermal driving single-working-medium combined cycle steam power device is formed.
Description of the drawings:
Fig. 1 is a schematic thermodynamic system diagram of a photo-thermal driven single-working-medium combined cycle steam power plant according to the invention.
Fig. 2 is a schematic thermodynamic system diagram of a photo-thermal driven single-working-medium combined cycle steam power plant according to the invention.
Fig. 3 is a schematic thermodynamic system diagram of a photo-thermal driven single-working-medium combined cycle steam power plant according to the invention.
Fig. 4 is a schematic thermodynamic system diagram of a photo-thermal driven single-working-medium combined cycle steam power plant according to the 4 th principle.
Fig. 5 is a schematic thermodynamic system diagram of a photo-thermal driven single-working-medium combined cycle steam power plant according to the invention.
Fig. 6 is a schematic thermodynamic system diagram of a photo-thermal driven single-working-medium combined cycle steam power plant according to the invention.
Fig. 7 is a schematic thermodynamic system diagram of a photo-thermal driven single-working-medium combined cycle steam power plant according to the 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-solar heat collection system, a 9-second regenerator, a 10-second booster pump, a 11-low temperature regenerator, a 12-second evaporator and a 13-diffuser pipe are arranged; a-expansion speed increaser, B-second expansion speed increaser, C-dual-energy compressor and D-newly added diffuser.
The following brief description is given here about the photo-thermal and solar heat collection system:
(1) Solar heat collection systems, also known as solar heating systems, refer to heating systems that utilize a heat collector to convert solar radiant energy into high temperature heat (simply referred to as photo-thermal), which can be used to provide a driving heat load to a thermodynamic cycle system; it is mainly composed of heat collector and related necessary auxiliary facilities.
(2) Types of solar energy collection systems include, but are not limited to: ① The concentrating solar heat collection system mainly comprises a groove type system, a tower type system and a butterfly type system at present; ② The non-concentrating solar heat collecting system has solar pond, solar chimney and other systems.
(3) There are two main types of heat supply modes of solar heat collection systems at present: ① The high-temperature heat energy converted by solar energy is directly supplied to a heated medium flowing through a solar heat collection system; ② The high-temperature heat energy converted from solar energy is firstly supplied to the working medium of the self-circulation loop, and then the working medium is supplied to the heated medium flowing through the solar heat collection system through the heat exchanger.
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 photo-thermal driving single-working-medium combined cycle steam power device shown in fig. 1 is realized by the following steps:
(1) Structurally, the system mainly comprises an expander, a second expander, a compressor, a booster pump, a regenerator, a condenser, an evaporator and a solar heat collection system; 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 solar heat collection system 8, the condenser 6 is provided with a condensate pipe 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 solar heat collection system 8, the solar heat collection system 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 is also provided with a cooling 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 subjected to heat absorption and heating through the heat regenerator 5 and is subjected to depressurization and power generation through the second expander 2 and then is provided for the evaporator 7, and the second path is subjected to heat absorption and heating through the solar heat collection system 8 after the boosting and heating are continued; the condensate discharged by the condenser 6 is boosted by the booster pump 4, is absorbed by the evaporator 7 to be heated and vaporized, and then enters the solar heat collection system 8 to absorb heat to be heated; the steam discharged by the solar heat collection system 8 flows through the expander 1 to perform decompression and work, flows through the heat regenerator 5 to release heat and cool, and then is 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 solar energy provides driving heat load through the solar heat collection system 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 power, or work output by the expander 1 and the second expander 2 is provided for the compressor 3, the booster pump 4 and external power, so that the photo-thermal driving single-working-medium combined cycle steam power device is formed.
The photo-thermal driving single-working-medium combined cycle steam power device shown in fig. 2 is realized by the following steps:
(1) Structurally, the system mainly comprises an expander, a second expander, a compressor, a booster pump, a regenerator, a condenser, an evaporator and a solar heat collection system; 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 solar heat collection system 8, the condenser 6 is provided with a condensate pipe 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 solar heat collection system 8, the solar heat collection system 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 being communicated with the expander 1 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 is also provided with a cooling medium passage communicating with the outside, and the expander 1 is connected to the compressor 3 and transmits power.
(2) In the flow, compared with the photo-thermal driving single-working-medium combined cycle steam power plant shown in fig. 1, the difference is that: the steam discharged by the solar heat collection system 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 photo-thermal driving single-working-medium combined cycle steam power device.
The photo-thermal driving single-working-medium combined cycle steam power device 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 solar heat collection system 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 solar heat collection system 8 through the second heat regenerator 9, the condenser 6 is provided with a condensate pipe 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 solar heat collection system 8 through the second heat regenerator 9, the solar heat collection system 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, the first path is communicated with the compressor 3 and the second path is communicated with the condenser 6; the condenser 6 is also provided with a cooling medium passage communicating with the outside, and the expander 1 is connected to the compressor 3 and transmits power.
(2) In the flow, compared with the photo-thermal driving single-working-medium combined cycle steam power plant shown in fig. 1, the difference is that: the high-pressure steam discharged by the evaporator 7 and the compressor 3 flows through the second heat regenerator 9 to absorb heat and raise temperature, and is then supplied to the solar heat collection system 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 photo-thermal driving single-working-medium combined cycle steam power device is formed.
The photo-thermal driving single-working-medium combined cycle steam power device 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 solar heat collection system 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 solar heat collection system 8 through the second heat regenerator 9, the condenser 6 is provided with a condensate pipe 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 solar heat collection system 8 through the second heat regenerator 9, the solar heat collection system 8 is also provided with a steam channel which is communicated with the expander 1, the expander 1 is also provided with a steam channel which is communicated with the evaporator 7 through the heat regenerator 5 after being communicated with the expander 1, 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 passage communicating with the outside, and the expander 1 is connected to the compressor 3 and transmits power.
(2) In the flow, compared with the photo-thermal driving single-working-medium combined cycle steam power plant shown in fig. 1, the difference is that: the high-pressure steam discharged by the evaporator 7 and the compressor 3 flows through the second heat regenerator 9 to absorb heat and raise temperature, and is then supplied to the solar heat collection system 8; the steam discharged by the solar heat collection system 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 photo-thermal driving single-working-medium combined cycle steam power device is formed.
The photo-thermal driving single-working-medium combined cycle steam power device shown in fig. 5 is realized by the following steps:
(1) Structurally, in the photo-thermal driven 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 the 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 the flow, compared with the photo-thermal driving 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 further boosted and heated and then is divided into two paths, namely a first path is provided for the heat regenerator 5 and a second path enters the solar heat collection system 8, so that the photo-thermal driving single-working-medium combined cycle steam power device is formed.
The photo-thermal driven single-working-medium combined cycle steam power plant shown in fig. 6 is realized by the following steps:
(1) In the photo-thermal driving 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 a heat regenerator 5 and an evaporator 7 is adjusted to be that the low-pressure steam channel of the heat regenerator 5 is communicated with a second evaporator 12 through the evaporator 7, the communication between the low-pressure steam channel of a 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 a compressor 3 and a 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, a condensate pipeline of the condenser 6 is adjusted to be that the condensate pipeline 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 the flow, compared with the photo-thermal driving 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 photo-thermal driving single-working-medium combined cycle steam power device is formed.
The photo-thermal driven single-working-medium combined cycle steam power plant shown in fig. 7 is realized by the following steps:
(1) Structurally, in the photo-thermal driving single-working-medium combined cycle steam power device shown in fig. 1, an expansion speed increaser A is added to replace an expansion machine 1, a second expansion speed increaser B is added to replace a second expansion machine 2, a dual-energy compressor C is added to replace a compressor 3, a new diffusion pipe D is added to replace a booster pump 4.
(2) In the flow, compared with the photo-thermal driving 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 solar heat collection system 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 raise temperature and vaporize, and then enters the solar heat collection system 8 to absorb heat and raise temperature; the steam discharged by the solar heat collection system 8 flows through the expansion speed increaser A to be subjected to pressure reduction, 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 power to form the photo-thermal driving single-working-medium combined cycle steam power device.
The photo-thermal driving single-working-medium combined cycle steam power device provided by the invention has the following effects and advantages:
(1) In the process of driving the heat load by the driving energy, the irreversible loss of the temperature difference is small, and the heat efficiency is improved.
(2) 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.
(3) 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.
(4) 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.
(5) The constant temperature realizes low-temperature heat load discharge, the temperature difference loss is small, and the heat change work efficiency is improved.
(6) 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.
(7) The process is reasonable, the structure is simple, the manufacturing cost of the photo-thermal driving single-working-medium combined cycle steam power device is obviously reduced, and the system economy is improved.
(8) 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.
(9) The heat efficiency is high by providing a plurality of specific technical schemes; the method is beneficial to improving the application value of photo-thermal, and expanding the application range and value of the photo-thermal driving single-working-medium combined cycle steam power device.
Claims (8)
1. The photo-thermal driving 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 and a solar heat collection system; 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 solar heat collection system (8), the condenser (6) is provided with a condensate pipe 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 solar heat collection system (8), the solar heat collection system (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, and the expander (1) is connected with the compressor (3) and transmits power to form a photo-thermal driving 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 photo-thermal driving 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 and a solar heat collection system; 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 solar heat collection system (8), the condenser (6) is provided with a condensate pipe 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 solar heat collection system (8), the solar heat collection system (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 expander (1) is also communicated with the heat regenerator (5), and the evaporator (7) is also provided with the low-pressure steam channel which is divided into two paths, namely the first path which is communicated with the compressor (3) and the 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, and the expander (1) is connected with the compressor (3) and transmits power to form a photo-thermal driving 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 photo-thermal driving 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 solar heat collection system 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 solar heat collection system (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 solar heat collection system (8) through the second heat regenerator (9), the solar heat collection system (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 the first path which is communicated with the compressor (3) and the 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, and the expander (1) is connected with the compressor (3) and transmits power to form a photo-thermal driving 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 photo-thermal driving 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 solar heat collection system 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 solar heat collection system (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 solar heat collection system (8) through the second heat regenerator (9), the solar heat collection system (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 the low-pressure steam channel which is divided into two paths, namely the first path which is communicated with the compressor (3) and the 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, and the expander (1) is connected with the compressor (3) and transmits power to form a photo-thermal driving 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 photo-thermal driving 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 one of the photo-thermal driving single-working-medium combined cycle steam power devices in claims 1-4, a condensate pipe line 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 the second booster pump (10), a steam extraction channel is additionally arranged in the compressor (3) and is communicated with the low-temperature heat regenerator (11), and a condensate pipe line of the low-temperature heat regenerator (11) is communicated with the booster pump (4) to form the photo-thermal driving single-working-medium combined cycle steam power device.
6. In any one of the photo-thermal driving single-working-medium combined cycle steam power devices in claims 1, 3 and 4, a second evaporator and a diffusion pipe are added, the communication between a low-pressure steam channel of a regenerator (5) and the evaporator (7) is adjusted to be the communication between the low-pressure steam channel of the regenerator (5) and the second evaporator (12) through the evaporator (7), the communication between the low-pressure steam channel of a second expander (2) and the evaporator (7) is adjusted to be the communication between the low-pressure steam channel of the second expander (2) and 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 adjusted to be the communication between the low-pressure steam channel of the second evaporator (12) and the compressor (3) and the condenser (6), the condensate pipe of the condenser (6) is adjusted to be the condensate pipe of the condenser (6) through the booster pump (4) and the evaporator (7) and the condensate pipe (12) is formed to be the communication between the condensate pipe (4) and the second evaporator (12) through the second evaporator (12), and the single-working-medium combined cycle steam power device is formed.
7. In the photo-thermal driving single-working-medium combined cycle steam power device, a second evaporator and a diffuser pipe are added, the low-pressure steam channel of the expander (1) is communicated with the evaporator (7) and is adjusted 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 adjusted to be communicated with the low-pressure steam channel of the second expander (2) through the evaporator (7) and the second evaporator (12), the low-pressure steam channel of the evaporator (7) is respectively communicated with the compressor (3) and the condenser (6) and is adjusted to be communicated with the compressor (3) and the condenser (6), the condensate pipe of the condenser (6) is communicated with the evaporator (7) through a booster pump (4) and is adjusted to be communicated with the condensate pipe of the condenser (6) through the booster pump (4) and the second evaporator (12), and then the condensate pipe of the condenser (6) is communicated with the second evaporator (12) through the evaporator (12) and the single-working-medium combined cycle steam power device is formed.
8. A photo-thermal driving single-working-medium combined cycle steam power device is characterized in that in any one of the photo-thermal driving single-working-medium combined cycle steam power devices in claims 1-7, an expansion speed increaser (A) is added to replace the expansion machine (1), a second expansion speed increaser (B) is added to replace the second expansion machine (2), a dual-energy compressor (C) is added to replace the compressor (3), a newly added diffuser pipe (D) is added to replace the booster pump (4), and the photo-thermal driving single-working-medium combined cycle steam power device is formed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310427440 | 2023-04-14 | ||
| CN2023104274404 | 2023-04-14 |
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