CN213953702U - Flexible large-scale high-parameter heat supply system of thermal power plant - Google Patents
Flexible large-scale high-parameter heat supply system of thermal power plant Download PDFInfo
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- CN213953702U CN213953702U CN202022691270.5U CN202022691270U CN213953702U CN 213953702 U CN213953702 U CN 213953702U CN 202022691270 U CN202022691270 U CN 202022691270U CN 213953702 U CN213953702 U CN 213953702U
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Abstract
The utility model relates to a large-scale high parameter heating system of thermal power factory flexibility, this heating system, including thermal power generation system and high-low pressure steam combined heat transfer system, thermal power generation system provides the heat source, unites heat transfer system through high-low pressure steam and becomes heat supply steam with the heat supply feedwater, realizes the thermal power factory to the external heat supply. A large-scale high-parameter heat supply system of a thermal power plant effectively decouples a boiler and a steam turbine system, breaks through the rigid coupling of the cogeneration of a thermal power unit and ensures the large-scale heat supply capacity under the working condition of low-load power generation. The high-low pressure steam combined heat exchange system can supply hot water for heating into high-temperature high-pressure hot steam, and the high-parameter steam supply capacity of a thermal power plant is improved.
Description
Technical Field
The utility model relates to a heat supply technical field, concretely relates to extensive high parameter heating system of thermal power factory flexibility.
Background
With the deep advance of the electric power market reformation process, the energy structure adjustment mainly based on renewable energy continuously drives the transformation and upgrading of the existing coal-electricity industry. With the continuous development and maturity of the electric power auxiliary service market and the establishment of the electric power spot market, the flexibility modification technology of the thermal power plant for adapting to the operation of the electric power market will meet the development opportunity.
For a heat supply unit, as the heat supply load is generally larger in winter, a certain boiler output needs to be maintained, the problem of low-load operation of the boiler is less involved, and the main contradiction is mainly focused on the problem that the power generation output adjustment range is too small under the condition of meeting the heat supply condition, namely the problem of thermoelectric decoupling. How to reduce steam work while satisfying heat supply, that is, the redistribution of work share and heat supply share of high-temperature and high-pressure steam in a steam turbine is the key for solving the problem.
The technical route for the flexibility improvement of the heat supply unit mainly comprises two types: the method is characterized in that firstly, the heat supply capacity of a unit is increased to reduce the minimum output, and the low-pressure cylinder zero output technology and the high back pressure heat supply technology which reduce the through-flow link of the steam turbine and the steam turbine bypass heat supply technology which reduce the steam flow of the through-flow part are mainly adopted; the other is a heat energy storage technology, which mainly comprises the schemes of hot water tank energy storage, electric boiler solid heat storage, electrode boiler and the like.
Although the current heat supply technical scheme can achieve the purposes of heat supply and unit load reduction, only partial electric load of a thermal power plant can be reduced, and only low-parameter steam can be provided.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a flexible large-scale high-parameter heating system of a thermal power plant, which heats the heating feed water through high-pressure main steam and high-temperature reheat steam simultaneously, and then sends the high-pressure main steam condensate and the cooled reheat steam back to a boiler system, thereby ensuring the safe operation of the boiler and a steam turbine and realizing the flexible large-scale heating of the thermal power plant; the newly-built high-low pressure steam combined heat exchange system can greatly widen the heat supply parameters of the heat supply steam, the pressure of the heat supply steam is flexibly adjusted within subcritical range, the temperature of the heat supply steam does not exceed the rated temperature of the main steam of the boiler, and the high-parameter heat supply of a thermal power plant is realized.
The utility model adopts the technical proposal that: the utility model provides a large-scale high parameter heating system of thermal power factory flexibility, includes thermal power generation system and high-low pressure steam combined heat transfer system, its characterized in that: the thermal power generation system and the high-low pressure steam combined heat exchange system are connected with each other through a steam-water pipeline, so that heat supply and water supply are changed into heat supply steam, and external heat supply of a thermal power plant is realized.
Preferably, the high-pressure steam and low-pressure steam combined heat exchange system comprises an overheating heater, a phase change heater, a preheating heater and a high-pressure water feed pump, wherein part of high-pressure main steam of the thermal power generation system enters the overheating heater from a steam inlet pipeline of the overheating heater to exchange heat with heat supply steam in the overheating heater; then the steam enters the phase change heater from a steam outlet pipeline of the overheating heater, exchanges heat with heat supply water in the phase change heater, is condensed into high-pressure water, enters the preheating heater through a high-pressure water inlet pipeline of the preheating heater, and is changed into high-pressure supercooled water; and finally, pressurizing and conveying the steam to a water supply system at the outlet of the water supply pump of the thermal power plant by using a high-pressure water supply pump, or reducing the pressure of the high-pressure water and conveying the steam to a deaerator of the thermal power plant, so that the high-pressure steam-water circulation of the thermal power plant is realized.
Furthermore, the high-pressure steam combined heat exchange system further comprises a reheating heater A, a reheating heater B and a steam compressor, part of high-temperature reheating steam of the thermal power generation system enters the reheating heater A from a steam inlet pipeline of the reheating heater A to exchange heat with heat supply steam in the reheating heater A, then enters the reheating heater B from a steam outlet pipeline of the reheating heater A to exchange heat with heat supply water in the reheating heater B, and is pressurized by the steam compressor after being changed into low-pressure reheating steam and then sent back to the low-temperature reheating system, so that the high-temperature reheating steam-water circulation of the thermal power plant is realized.
Furthermore, the high-pressure steam combined heat exchange system and the low-pressure steam combined heat exchange system further comprise a reheating heater A, an evaporating heater, a reheating heater B and a steam compressor, wherein part of high-temperature reheating steam of the thermal power generation system enters the reheating heater A from a steam inlet pipeline of the reheating heater A to exchange heat with heat supply steam in the reheating heater A, then enters the evaporating heater from a steam outlet pipeline of the reheating heater A to exchange heat, enters the reheating heater B from a steam inlet pipeline of the reheating heater B after being cooled, exchanges heat with heat supply water in the reheating heater B to be changed into low-pressure reheating steam, is pressurized by the steam compressor and then is sent back to the low-temperature reheating system, and the high-temperature reheating steam water circulation of the thermal power plant is realized.
Furthermore, the heat supply feed water is pressurized by a heat supply return water pump and then is sent into a deaerator, after being deaerated, the heat supply feed water is pressurized by a heat supply feed water pump A and then is divided into two paths, one path of the heat supply feed water enters a preheating heater to be heated, the other path of the heat supply feed water enters a reheating heater B to be heated, and the two paths of the heat supply feed water directly enter a steam pocket A after being heated;
the heat supply saturated water in the steam pocket A is heated by the phase change heater and then is divided into two paths of heat supply steam again, one path of heat supply steam enters the overheating heater to be heated, the other path of heat supply steam enters the reheating heater A to be heated, and the two paths of heat supply steam are mixed to form qualified superheated steam, so that external heat supply is realized.
Furthermore, the heat supply water is pressurized by a heat supply water return pump and then divided into two paths, one path is sent to a deaerator, the deaerator is pressurized by a heat supply water feed pump A and then sent to a preheating heater for heating, the other path is sent to the deaerator, and the deaerator is pressurized by a heat supply water feed pump B and then sent to a reheating heater B for heating;
the heat supply water heated by the preheating heater enters the steam pocket A from a heat supply water supply pipeline at the outlet of the preheating heater, and the heat supply saturated water in the steam pocket A enters the overheating heater to be heated after being heated by the phase change heater, so that qualified overheated steam is formed;
the heat supply water heated by the reheating heater B enters the steam drum B from a heat supply water supply pipeline at the outlet of the reheating heater B, and the heat supply saturated water in the steam drum B enters the reheating heater A to be heated after being heated by the evaporation heater, so that qualified superheated steam is obtained;
the two paths of qualified superheated steam can be used for supplying heat to the outside after being mixed with steam with the same parameters, and can also be used for supplying heat to the outside by the steam with different parameters respectively.
Furthermore, the high-temperature and high-pressure steam generated by the thermal power generation system is used for directly heating the hot water supply, and the rest of the high-temperature and high-pressure steam is used for generating power by a steam turbine generator unit. The heat supply capacity of the thermal power generating unit depends on the capacity of the boiler and is not limited by the power generation capacity of the steam turbine.
Furthermore, the working pressure of the heating steam is within subcritical, and the working temperature does not exceed the rated temperature of the main steam of the boiler.
The utility model discloses the beneficial effect who gains is: the molten salt is heated by part of high-temperature and high-pressure steam of a thermal power plant, and the high-pressure main steam and the high-temperature reheat steam simultaneously heat the heat supply water to change the heat supply water into qualified heat supply steam. And the high-pressure main steam is cooled by the heat supply steam-water system, becomes high-pressure condensed water and returns to the boiler water supply system to finish the cyclic heating. The high-temperature reheated steam is cooled by a heat supply steam-water system to be changed into low-pressure reheated steam, and the low-pressure reheated steam is pressurized by a steam compressor and then returns to a boiler reheater through a low-temperature reheating system to complete cycle heating. And (4) sending the rest high-temperature and high-pressure steam of the thermal power plant into a steam turbine to continue to do work for power generation. Therefore, the flexible variable load of the steam turbine can be realized, the safe operation of the boiler and the steam turbine is ensured, and the deep peak regulation and large-scale high-parameter heat supply can be realized.
The utility model has the advantages of it is following:
(1) the boiler and the steam turbine are effectively decoupled, so that the steam turbine can flexibly operate under wide load while large-scale heat supply of the thermal power generating unit is ensured;
(2) during large-scale heat supply, the heat supply steam pressure breaks through the reheat steam pressure limit;
(3) the steam supply temperature can approach the rated temperature of the main steam.
Drawings
FIG. 1 is a schematic flow diagram of a large-scale high-parameter heating system of a thermal power plant according to the present invention;
FIG. 2 is another embodiment of the present invention;
reference numerals: 1. a conventional thermal power generation system; 1.1, a high-pressure main steam pipeline; 1.2, a high-temperature reheating steam pipeline; 1.3, a low-temperature reheat steam pipeline; 1.4, a water supply pipeline; 1.5, a condensed water pipeline; 1.6, a boiler; 1.7, a steam turbine generator unit; 1.8, a high-pressure water supply bypass pipeline; 2. a high-pressure and low-pressure steam combined heat exchange system; 2.1, overheating a heater; 2.11, a high-pressure main steam inlet pipeline of the superheated heater; 2.12, a superheated heater heat supply steam outlet pipeline; 2.13, a high-pressure main steam outlet pipeline of the overheating heater; 2.14, a superheated heater heating steam inlet pipeline; 2.2, a reheating heater A; 2.21, a high-temperature reheating steam inlet pipeline of a reheating heater A; 2.22, a reheating heater A supplies heat steam outlet pipeline; 2.23, a high-temperature reheat steam outlet pipeline of the reheat heater A; 2.24, a reheating heater A supplies heat steam inlet pipeline; 2.3, a phase change heater; 2.31, a phase change heater supplies heat to a saturated water inlet pipeline; 2.32, a phase change heater supplies heat to a saturated steam outlet pipeline; 2.33, an evaporation heater; 2.34, an evaporation heater is used for supplying a hot saturated water inlet pipeline; 2.35, an evaporation heater supplies heat to a saturated steam outlet pipeline; 2.4, preheating a heater; 2.41, preheating a high-pressure water inlet pipeline of a heater; 2.42, preheating a heater to supply heat to a water outlet pipeline; 2.43, preheating a high-pressure water outlet pipeline of the heater; 2.44, preheating a heater and supplying heat to a water inlet pipeline; 2.5, a reheating heater B; 2.51, a low-temperature reheating steam outlet pipeline of the reheating heater B; 2.52, a reheating heater B is used for supplying heat to a water inlet pipeline; 2.53, a reheating heater B supplies heat to a water outlet pipeline; 2.54, a high-temperature reheat steam inlet pipeline of a reheat heater B; 2.6, a vapor compressor; 2.61, a vapor compressor outlet vapor line; 2.7, a steam drum A; 2.71, a steam drum A supplies heat to the saturated steam outlet pipeline; 2.72, steam drum B; 2.73 steam drum B supplies heat to saturate steam outlet pipeline; 2.8, a high-pressure water feed pump; 2.81, a high-pressure water feed pump outlet pipeline; 2.9, a deaerator A; 2.91, a heat supply water return pump; 2.92, a heat and water supply pump A; 2.93, a deaerator A supplies heat to the water inlet pipeline; 2.94, a deaerator A supplies heat to the water outlet pipeline; 2.95, a deaerator B; 2.96, a deaerator B supplies hot water to the inlet pipeline; 2.97, a deaerator B supplies hot water to the outlet pipeline; 2.98, a heat and water supply pump B.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
The utility model discloses a thermal power system 1 and high low pressure steam unite heat transfer system 2, high low pressure steam unite heat transfer system 2 is to extract high pressure main steam and high temperature reheat steam simultaneously, will supply heat to the water heating through the soda heat exchanger and become qualified heat supply steam, become high-pressure condensate water and low temperature reheat steam respectively after the cooling, in sending back force power generation system 1's boiler after passing through water pump and vapor compressor pressurization respectively, when guaranteeing boiler steam turbine safety, realize the external heat supply of flexibility.
As shown in fig. 1, in a large-scale high-parameter heating system of a thermal power plant, heating feedwater is heated in a manner of series-parallel connection of high-pressure main steam and high-temperature reheat steam.
The specific heat supply process is as follows:
part of high-pressure main steam of the thermal power generation system 1 enters the overheating heater 2.1 from the overheating heater steam inlet pipeline 2.11 and exchanges heat with heat supply steam in the overheating heater 2.1; then enters the phase change heater 2.3 from the steam outlet pipeline 2.13 of the superheated heater, exchanges heat with heat supply water in the phase change heater 2.3, condenses into high-pressure water, enters the preheating heater 2.4 through the high-pressure water inlet pipeline 2.41 of the preheating heater, and becomes high-pressure supercooled water; and finally, the steam is pressurized and sent to a water supply system at the outlet of the water supply pump of the thermal power plant by a high-pressure water supply pump 2.8, so that the high-pressure steam-water circulation of the thermal power plant is realized.
Part of high-temperature reheat steam of the thermal power generation system 1 enters the reheat heater A2.2 from a reheat heater A steam inlet pipeline 2.21, exchanges heat with heat supply steam in the reheat heater A2.2, then enters the reheat heater B2.5 from a reheat heater A steam outlet pipeline 2.23, exchanges heat with heat supply water in the reheat heater B2.5, is changed into low-pressure reheat steam, is pressurized by a steam compressor 2.6 and then is sent back to the low-temperature reheat system, and the high-temperature reheat steam and water circulation of a thermal power plant is realized.
The heat supply feed water is pressurized by a heat supply return pump 2.91 and then is sent into a deaerator 2.9, after being deaerated, the heat supply feed water is pressurized by a heat supply feed pump A2.92 and then is divided into two paths, one path of the heat supply feed water enters a preheating heater 2.4 to be heated, the other path of the heat supply feed water enters a reheating heater B2.5 to be heated, and the two paths of the heat supply feed water directly enter a steam pocket A2.7 after being heated; the heat supply saturated water in the steam pocket A2.7 is heated by the phase change heater 2.3 and then is divided into two paths of heat supply steam again, one path of heat supply steam enters the overheating heater 2.1 to be heated, the other path of heat supply steam enters the reheating heater A2.2 to be heated, and the two paths of heat supply steam are mixed to form qualified overheating steam, so that external heat supply is realized.
The high-temperature high-pressure steam generated by the thermal power generation system 1 is used for generating power by a steam turbine generator unit except for directly heating the heat supply water. The heat supply capacity of the thermal power generating unit depends on the capacity of the boiler and is not limited by the power generation capacity of the steam turbine.
The working pressure of the heat supply steam is within subcritical range, and the working temperature does not exceed the rated temperature of the main steam of the boiler.
In another embodiment:
as shown in fig. 2, in a large-scale high-parameter heating system of a thermal power plant, heating feedwater is heated in a manner that high-pressure main steam and high-temperature reheat steam are connected in parallel.
The specific heat supply process is as follows:
part of high-pressure main steam of the thermal power generation system 1 enters the overheating heater 2.1 from the overheating heater steam inlet pipeline 2.11 and exchanges heat with heat supply steam in the overheating heater 2.1; then enters the phase change heater 2.3 from the steam outlet pipeline 2.13 of the superheated heater, exchanges heat with heat supply water in the phase change heater 2.3, condenses into high-pressure water, enters the preheating heater 2.4 through the high-pressure water inlet pipeline 2.41 of the preheating heater, and becomes high-pressure supercooled water; and finally, the steam is pressurized and sent to a water supply system at the outlet of the water supply pump of the thermal power plant by a high-pressure water supply pump 2.8, so that the high-pressure steam-water circulation of the thermal power plant is realized.
Part of high-temperature reheat steam of the thermal power generation system 1 enters the reheat heater A2.2 from a reheat heater A steam inlet pipeline 2.21, exchanges heat with heat supply steam in the reheat heater A2.2, then enters the evaporation heater 2.33 from a reheat heater A steam outlet pipeline 2.23, exchanges heat, enters the reheat heater B2.5 from a reheat heater B steam inlet pipeline 2.54 after being cooled, exchanges heat with heat supply water in the reheat heater B2.5, is pressurized by a steam compressor 2.6 after being changed into low-pressure reheat steam, and then is sent back to the low-temperature reheat system, and the high-temperature reheat steam water circulation of a thermal power plant is realized.
The heat supply feed water is pressurized by a heat supply return water pump 2.91 and then divided into two paths, one path is sent to a deaerator 2.9, after being deaerated, the pressurized heat supply feed water is sent to a preheating heater 2.4 for heating after being pressurized by a heat supply feed water pump A2.92, the other path is sent to a deaerator 2.95, after being deaerated, the pressurized heat supply feed water is sent to a reheating heater B2.5 for heating after being pressurized by a heat supply feed water pump B2.99;
the heat supply water heated by the preheating heater 2.4 enters the steam pocket A2.7 from the heat supply water supply pipeline 2.42 at the outlet of the preheating heater, and the heat supply saturated water in the steam pocket A2.7 enters the overheating heater 2.1 to be heated after being heated by the phase change heater 2.3, so that qualified overheating steam is obtained;
the heat supply water heated by the reheating heater B2.5 enters the steam pocket B2.72 from a heat supply water supply pipeline 2.53 at the outlet of the reheating heater B, and the heat supply saturated water in the steam pocket B2.72 enters the reheating heater A2.2 to be heated after being heated by the evaporation heater 2.33, so that qualified superheated steam is obtained;
the two paths of qualified superheated steam can be used for supplying heat to the outside after being mixed with steam with the same parameters, and can also be used for supplying heat to the outside by the steam with different parameters respectively.
The high-temperature high-pressure steam generated by the thermal power generation system 1 is used for generating power by a steam turbine generator unit except for directly heating the heat supply water. The heat supply capacity of the thermal power generating unit depends on the capacity of the boiler and is not limited by the power generation capacity of the steam turbine.
The working pressure of the heat supply steam is within subcritical range, and the working temperature does not exceed the rated temperature of the main steam of the boiler.
The foregoing shows and describes the general principles and principal structural features of the invention. The present invention is not limited by the above-mentioned examples, and the present invention can be modified in various ways without departing from the spirit and scope of the present invention, and these modifications and improvements fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a large-scale high parameter heating system of thermal power factory flexibility, includes thermal power system (1) and high-low pressure steam combined heat transfer system (2), its characterized in that: the thermal power generation system (1) and the high-low pressure steam combined heat exchange system (2) are connected with each other through a steam-water pipeline, so that heat supply and water supply are changed into heat supply steam, and external heat supply of a thermal power plant is realized.
2. The flexible large-scale high-parameter heating system of a thermal power plant according to claim 1, wherein: the high-pressure steam and low-pressure steam combined heat exchange system (2) comprises an overheating heater (2.1), a phase change heater (2.3), a preheating heater (2.4) and a high-pressure water feed pump (2.8), wherein part of high-pressure main steam of the thermal power generation system (1) enters the overheating heater (2.1) from an overheating heater steam inlet pipeline (2.11) and exchanges heat with heat supply steam in the overheating heater (2.1); then enters the phase change heater (2.3) from the steam outlet pipeline (2.13) of the superheated heater, exchanges heat with heat supply water in the phase change heater (2.3), condenses into high-pressure water, enters the preheated heater (2.4) through the high-pressure water inlet pipeline (2.41) of the preheated heater, and becomes high-pressure supercooled water; and finally, the steam is pressurized and sent to a water supply system at the outlet of the water supply pump of the thermal power plant by a high-pressure water supply pump (2.8), or the steam is sent to a deaerator of the thermal power plant after the high-pressure water is depressurized, so that the high-pressure steam-water circulation of the thermal power plant is realized.
3. The flexible large-scale high-parameter heating system of a thermal power plant of claim 2, wherein: the high-low pressure steam combined heat exchange system (2) further comprises a reheating heater A (2.2), a reheating heater B (2.5) and a steam compressor (2.6), part of high-temperature reheating steam of the thermal power generation system (1) enters the reheating heater A (2.2) from a steam inlet pipeline (2.21) of the reheating heater A, exchanges heat with heat supply steam in the reheating heater A (2.2), then enters the reheating heater B (2.5) from a steam outlet pipeline (2.23) of the reheating heater A, exchanges heat with heat supply water in the reheating heater B (2.5), is pressurized by the steam compressor (2.6) after being changed into low-pressure reheating steam and then is sent back to the low-temperature reheating system, and high-temperature reheating steam water circulation of a thermal power plant is realized.
4. The flexible large-scale high-parameter heating system of a thermal power plant of claim 2, wherein: the high-low pressure steam combined heat exchange system (2) further comprises a reheating heater A (2.2), an evaporating heater (2.33), a reheating heater B (2.5) and a steam compressor (2.6), part of high-temperature reheating steam of the thermal power generation system (1) enters the reheating heater A (2.2) from a reheating heater A steam inlet pipeline (2.21) to exchange heat with heat supply steam in the reheating heater A (2.2), then enters the evaporating heater (2.33) from a reheating heater A steam outlet pipeline (2.23) to exchange heat, enters the reheating heater B (2.5) from a reheating heater B steam inlet pipeline (2.54) after being cooled, exchanges heat with heat supply water in the reheating heater B (2.5) to exchange heat, is pressurized by the steam compressor (2.6) and then is sent back to the low-temperature reheating system after being changed into low-pressure reheating steam, and high-temperature reheating steam circulation of the thermal power plant is realized.
5. The flexible large-scale high-parameter heating system of a thermal power plant according to claim 3, wherein: the heat supply water is pressurized by a heat supply water return pump (2.91) and then is sent into a deaerator (2.9), the deaerator is pressurized by a heat supply water feed pump A (2.92) and then is divided into two paths, one path of the water enters a preheating heater (2.4) to be heated, the other path of the water enters a reheating heater B (2.5) to be heated, and the two paths of the heat supply water directly enter a steam pocket A (2.7) after being heated;
the heat supply saturated water in the steam pocket A (2.7) is heated by the phase change heater (2.3) and then is divided into two paths of heat supply steam again, one path of heat supply steam enters the overheating heater (2.1) to be heated, the other path of heat supply steam enters the reheating heater A (2.2) to be heated, and the two paths of heat supply steam are mixed to form qualified overheating steam to realize external heat supply.
6. The flexible large-scale high-parameter heating system of a thermal power plant according to claim 4, wherein: the heat supply water is pressurized by a heat supply water return pump (2.91) and then divided into two paths, one path is sent to a deaerator (2.9), the deaerator is pressurized by a heat supply water feed pump A (2.92) and then sent to a preheating heater (2.4) to be heated, the other path is sent to the deaerator (2.95), the deaerator is pressurized by a heat supply water feed pump B (2.99) and then sent to a reheating heater B (2.5) to be heated;
the heat supply water heated by the preheating heater (2.4) enters the steam pocket A (2.7) from a heat supply water supply pipeline (2.42) at the outlet of the preheating heater, and the heat supply saturated water in the steam pocket A (2.7) enters the overheating heater (2.1) for heating after being heated by the phase change heater (2.3) to become qualified overheating steam;
the heat supply water heated by the reheating heater B (2.5) enters a steam pocket B (2.72) from a heat supply water pipe (2.53) at the outlet of the reheating heater B, and the heat supply saturated water in the steam pocket B (2.72) enters the reheating heater A (2.2) to be heated after being heated by an evaporation heater (2.33) to become qualified superheated steam;
the two paths of qualified superheated steam are mixed with the same parameter steam and then supply heat to the outside, or the different parameter steam respectively supplies heat to the outside.
7. The flexible large-scale high-parameter heating system of a thermal power plant according to any one of claims 2, 3 or 4, wherein: the high-temperature high-pressure steam generated by the thermal power generation system (1) is used for directly heating the heat supply water, and the rest of the high-temperature high-pressure steam is used for generating power by a steam turbine generator unit; the heat supply capacity of the thermal power generating unit depends on the capacity of the boiler and is not limited by the power generation capacity of the steam turbine.
8. The flexible large-scale high-parameter heating system of a thermal power plant according to claim 5 or 6, wherein: the working pressure of the heat supply steam is within subcritical, and the working temperature does not exceed the rated temperature of the main steam of the boiler.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112502800A (en) * | 2020-11-19 | 2021-03-16 | 中国电力工程顾问集团中南电力设计院有限公司 | Flexible large-scale high-parameter heat supply system of thermal power plant |
| CN114382559A (en) * | 2022-01-26 | 2022-04-22 | 斯玛特储能技术有限公司 | Double-medium heat storage type peak regulation thermal power generation system and heat storage and release method |
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2020
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112502800A (en) * | 2020-11-19 | 2021-03-16 | 中国电力工程顾问集团中南电力设计院有限公司 | Flexible large-scale high-parameter heat supply system of thermal power plant |
| CN112502800B (en) * | 2020-11-19 | 2023-08-18 | 中国电力工程顾问集团中南电力设计院有限公司 | Large-scale high-parameter heating system of thermal power plant flexibility |
| CN114382559A (en) * | 2022-01-26 | 2022-04-22 | 斯玛特储能技术有限公司 | Double-medium heat storage type peak regulation thermal power generation system and heat storage and release method |
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