CN113914949A - Triple reheating power generation system - Google Patents
Triple reheating power generation system Download PDFInfo
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- CN113914949A CN113914949A CN202111113087.XA CN202111113087A CN113914949A CN 113914949 A CN113914949 A CN 113914949A CN 202111113087 A CN202111113087 A CN 202111113087A CN 113914949 A CN113914949 A CN 113914949A
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- pressure cylinder
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- 238000003303 reheating Methods 0.000 title claims abstract description 80
- 238000010248 power generation Methods 0.000 title claims abstract description 38
- 238000010438 heat treatment Methods 0.000 claims abstract description 26
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 41
- 238000001816 cooling Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
- F01K3/18—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters
- F01K3/20—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters with heating by combustion gases of main boiler
- F01K3/205—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters with heating by combustion gases of main boiler more than one circuit being heated by one boiler
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
- F01K3/18—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters
- F01K3/26—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters with heating by steam
- F01K3/262—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters with heating by steam by means of heat exchangers
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention provides a triple reheating power generation system, and relates to the field of power generation systems. The triple reheating power generation system comprises a boiler, an ultrahigh pressure cylinder, a high pressure cylinder, an intermediate pressure cylinder, a low pressure cylinder and a generator, wherein the ultrahigh pressure cylinder, the high pressure cylinder, the intermediate pressure cylinder and the low pressure cylinder are all in transmission connection with the generator; a primary reheater and a secondary reheater are arranged in the boiler, the steam inlets of the boiler and the ultrahigh pressure cylinder are connected with a main steam pipeline, the steam inlets of the primary reheater and the high pressure cylinder are connected with a primary reheating section pipeline, and the steam inlets of the secondary reheater and the intermediate pressure cylinder are connected with a secondary reheating section pipeline; the steam inlets of the intermediate pressure cylinder and the low pressure cylinder are connected with a tertiary reheating pipeline, a steam-steam heat exchanger is connected in series on the tertiary reheating pipeline, any one of the steam-steam heat exchanger and the main steam pipeline, the primary reheating section pipeline or the secondary reheating section pipeline is connected with a heating steam source pipeline, and the hot steam of the heating steam source pipeline in the steam-steam heat exchanger is used for heating the steam of the tertiary reheating pipeline.
Description
Technical Field
The invention relates to the technical field of power generation systems, in particular to a triple reheating power generation system.
Background
With the increasing consumption situation of fossil energy, the scheme of a secondary reheating system is generally adopted by the existing thermal power generating unit, and meanwhile, the operation parameters are improved in an auxiliary mode, so that the power generation efficiency of the coal-fired thermal power generating unit is improved.
The invention discloses a triple reheating power generation system and a working method thereof, and particularly discloses a triple reheating power generation system and a working method thereof, wherein the triple reheating power generation system comprises a boiler, a steam turbine, a generator, a condenser, a cooling system, a low-pressure heater, a high-pressure heater and a deaerator, wherein the boiler is provided with a primary reheater, a secondary reheater and a tertiary reheater, a steam outlet of the boiler is connected with an inlet of a first-stage cylinder of the steam turbine, the primary reheater, the secondary reheater and the tertiary reheater are respectively connected among all stages of cylinders of the steam turbine in series, an outlet of a last-stage cylinder of the steam turbine is connected with a steam inlet of the condenser, and a cooling water outlet of the condenser is connected to a water inlet of the boiler through the low-pressure heater, the deaerator and the high-pressure heater in sequence. The steam turbine comprises four groups of cylinders, namely an ultrahigh pressure cylinder, a high pressure cylinder, an intermediate pressure cylinder and a low pressure cylinder in sequence along the flow direction of steam.
In the three-time reheating power generation system in the prior art, a primary reheater is additionally arranged in the original secondary reheating boiler body so as to realize three-level reheating. However, the heating area in the boiler body, the volume of the furnace and the consumption of high-temperature pipelines are increased, so that the investment cost is high and the operation economy is poor.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a triple reheat power generation system, which solves the problems of the conventional triple reheat power generation system that a primary reheater is additionally provided in an original double reheat boiler body, a heating area, a furnace volume and consumption of high temperature pipes in the boiler body are increased, an investment cost is high, and an operation economy is poor.
The technical scheme of the triple reheating power generation system comprises the following steps:
the triple reheating power generation system comprises a boiler, an ultrahigh pressure cylinder, a high pressure cylinder, an intermediate pressure cylinder, a low pressure cylinder and a generator, wherein the ultrahigh pressure cylinder, the high pressure cylinder, the intermediate pressure cylinder and the low pressure cylinder are all in transmission connection with the generator;
a primary reheater and a secondary reheater are arranged in the boiler, steam inlets of the boiler and the ultrahigh pressure cylinder are connected with a main steam pipeline, steam inlets of the primary reheater and the high pressure cylinder are connected with a primary reheating section pipeline, and steam inlets of the secondary reheater and the intermediate pressure cylinder are connected with a secondary reheating section pipeline;
the steam inlets of the intermediate pressure cylinder and the low pressure cylinder are connected with a tertiary reheating pipeline, a steam-steam heat exchanger is connected in series on the tertiary reheating pipeline, any one of the steam-steam heat exchanger and the main steam pipeline, the primary reheating section pipeline or the secondary reheating section pipeline is connected with a heating steam source pipeline, and hot steam of the heating steam source pipeline in the steam-steam heat exchanger is used for heating steam of the tertiary reheating pipeline.
Furthermore, a steam outlet of the ultrahigh pressure cylinder and the primary reheater are connected with a primary reheating cold section pipeline;
and the steam-steam heat exchanger is also connected with a steam circulation pipeline, and the steam circulation pipeline is connected with the primary reheating cold section pipeline.
Further, a steam outlet of the high-pressure cylinder and the secondary reheater are connected with a secondary reheating cold section pipeline;
and the steam-steam heat exchanger is also connected with a steam circulation pipeline, and the steam circulation pipeline is connected with the secondary reheating cold section pipeline.
Further, the steam generator further comprises a high-pressure heater, and a high-pressure steam pipeline is connected between the high-pressure cylinder and the high-pressure heater;
and the steam-steam heat exchanger is also connected with a steam circulation pipeline, and the steam circulation pipeline is connected with the high-pressure steam pipeline.
The steam generator further comprises a deaerator, and the intermediate pressure cylinder and the deaerator are connected with an intermediate pressure steam pipeline;
the steam-steam heat exchanger is also connected with a steam circulation pipeline, and the steam circulation pipeline is connected with the medium-pressure steam pipeline.
Furthermore, a steam outlet of the low-pressure cylinder is connected with a condensed water pipeline, a low-pressure heater is connected in series on the condensed water pipeline, and the low-pressure cylinder and the low-pressure heater are connected with a low-pressure steam pipeline;
and the steam-steam heat exchanger is also connected with a steam circulation pipeline, and the steam circulation pipeline is connected with the low-pressure steam pipeline.
Furthermore, a steam outlet of the low-pressure cylinder is connected with a condensed water pipeline, a low-pressure heater is connected in series on the condensed water pipeline, and the low-pressure cylinder and the low-pressure heater are connected with a low-pressure steam pipeline;
the condenser and the condensate pump are sequentially arranged between the low-pressure cylinder and the low-pressure heater.
Further, still include oxygen-eliminating device and high pressure feed water heater, the oxygen-eliminating device with high pressure feed water heater is connected with the water feeding pipeline, the inside of boiler still is equipped with the over heater, main steam pipe connection in the over heater of boiler, high pressure feed water heater with also be connected with high-pressure steam pipeline between the over heater.
Furthermore, a water feeding pump is connected in series between the deaerator and the high-pressure heater in the water feeding pipeline.
Has the advantages that: the triple reheating power generation system adopts the structural design of a boiler, an ultrahigh pressure cylinder, a high pressure cylinder, an intermediate pressure cylinder, a low pressure cylinder and a generator, high pressure steam is conveyed to the ultrahigh pressure cylinder through the boiler, the steam is heated and conveyed to the high pressure cylinder through a primary reheater in the boiler, the steam is heated and conveyed to the intermediate pressure cylinder through a secondary reheater in the boiler, the steam energy is converted into kinetic energy for driving the generator in the ultrahigh pressure cylinder, the high pressure cylinder and the intermediate pressure cylinder, and then the kinetic energy is converted into electric energy by the generator.
Because the steam inlets of the intermediate pressure cylinder and the low pressure cylinder are connected with the tertiary reheating pipeline, the tertiary reheating pipeline is connected with the steam-steam heat exchanger in series, the heat source of the steam-steam heat exchanger is from the main steam pipeline, the primary reheating section pipeline or the secondary reheating section pipeline, and high-temperature steam exhausted by a boiler, a primary reheater or a secondary reheater is used for heating steam in the tertiary reheating pipeline, so that the superheat degree of the steam exhausted by the intermediate pressure cylinder is improved, the tertiary reheating steam is ensured to enter the low pressure cylinder to realize effective work, and the steam heat energy is fully utilized to be converted into electric energy.
More importantly, the tertiary reheating pipeline and the steam-steam heat exchanger are directly arranged between the intermediate pressure cylinder and the low pressure cylinder, the internal structure of the original secondary reheating boiler is not required to be modified, the increase of the heated area, the hearth volume and the consumption of a high-temperature pipeline in the boiler body is avoided, the investment cost is lower, and the running economy is good.
Drawings
Fig. 1 is a schematic structural view of a triple reheat power generation system in embodiment 1 of the triple reheat power generation system of the present invention;
fig. 2 is a schematic structural view of a triple reheat power generation system in embodiment 2 of the triple reheat power generation system of the present invention;
fig. 3 is a schematic structural view of a triple reheat power generation system in embodiment 3 of the triple reheat power generation system of the present invention.
In the figure: 1-boiler, 10-superheater, 11-primary reheater, 12-secondary reheater, 13-steam heat exchanger;
14-a heating steam source pipeline, 15-a steam circulating pipeline, 16-a water supply pipeline, 17-a condensate pump and 18-a water supply pump;
2-an ultrahigh pressure cylinder, 20-a main steam pipeline and 21-a primary reheating cold section pipeline;
3-high pressure cylinder, 30-primary reheating hot section pipeline, 31-secondary reheating cold section pipeline, 32-high pressure steam pipeline and 33-high pressure heater;
4-intermediate pressure cylinder, 40-secondary reheating section pipeline, 41-tertiary reheating pipeline, 42-intermediate pressure steam pipeline and 43-deaerator;
5-low pressure cylinder, 51-condensed water pipeline, 52-low pressure steam pipeline, 53-low pressure heater, 54-condenser and 6-generator.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the specific embodiment 1 of the triple reheat power generation system of the present invention, as shown in fig. 1, the triple reheat power generation system includes a boiler 1, an ultra-high pressure cylinder 2, a high pressure cylinder 3, an intermediate pressure cylinder 4, a low pressure cylinder 5 and a generator 6, wherein the ultra-high pressure cylinder 2, the high pressure cylinder 3, the intermediate pressure cylinder 4 and the low pressure cylinder 5 are all in transmission connection with the generator 6; a primary reheater 11 and a secondary reheater 12 are arranged in a boiler 1, a main steam pipeline 20 is connected to steam inlets of the boiler 1 and an ultrahigh pressure cylinder 2, a primary reheating section pipeline 30 is connected to the steam inlets of the primary reheater 11 and a high pressure cylinder 3, and a secondary reheating section pipeline 40 is connected to the steam inlets of the secondary reheater 12 and an intermediate pressure cylinder 4.
The steam inlets of the intermediate pressure cylinder 4 and the low pressure cylinder 5 are connected with a tertiary reheating pipeline 41, the tertiary reheating pipeline 41 is connected with a steam-steam heat exchanger 13 in series, the steam-steam heat exchanger 13 and the main steam pipeline 20 are connected with a heating steam source pipeline 14, and the hot steam of the heating steam source pipeline 14 in the steam-steam heat exchanger 13 is used for heating the steam of the tertiary reheating pipeline 41.
The triple reheating power generation system adopts the structural design of a boiler 1, an ultrahigh pressure cylinder 2, a high pressure cylinder 3, an intermediate pressure cylinder 4, a low pressure cylinder 5 and a generator 6, high pressure steam is conveyed to the ultrahigh pressure cylinder 2 through the boiler 1, the steam is heated by a primary reheater 11 in the boiler 1 and conveyed to the high pressure cylinder 3, the steam is heated by a secondary reheater 12 in the boiler 1 and conveyed to the intermediate pressure cylinder 4, the steam energy is converted into kinetic energy for driving the generator 6 in the ultrahigh pressure cylinder 2, the high pressure cylinder 3 and the intermediate pressure cylinder 4, and then the kinetic energy is converted into electric energy by the generator 6.
Because the steam inlets of the intermediate pressure cylinder 4 and the low pressure cylinder 5 are connected with the tertiary reheating pipeline 41, the tertiary reheating pipeline 41 is connected with the steam-steam heat exchanger 13 in series, the heat source of the steam-steam heat exchanger 13 comes from the main steam pipeline 20, the primary reheating section pipeline 30 or the secondary reheating section pipeline 40, the high-temperature steam discharged by the boiler 1 is used for heating the steam in the tertiary reheating pipeline 41, the superheat degree of the steam discharged by the intermediate pressure cylinder 4 is improved, the tertiary reheating steam is ensured to enter the low pressure cylinder 5 to realize effective work, and the steam heat energy is fully utilized to be converted into electric energy. More importantly, the tertiary reheating pipeline 41 and the steam-steam heat exchanger 13 are directly arranged between the intermediate pressure cylinder 4 and the low pressure cylinder 5, the internal structure of the original secondary reheating boiler is not required to be modified, the increase of the heated area in the boiler body, the volume of a hearth and the consumption of a high-temperature pipeline are avoided, the investment cost is lower, and the running economy is good.
In the present embodiment, the primary reheat cooling line 21 is connected to the primary reheater 11 at the exhaust port of the ultrahigh pressure cylinder 2, and the secondary reheat cooling line 31 is connected to the secondary reheater 12 at the exhaust port of the high pressure cylinder 3. The steam which does work in the ultra-high pressure cylinder 2 is circulated to the boiler 1 through the primary reheating cold section pipeline 21, reheated by the primary reheater 11, input to the high pressure cylinder 3 again to do work, circulated to the boiler 1 through the secondary reheating cold section pipeline 31, and reheated by the secondary reheater 12, so that the steam energy can be reused.
Wherein, triple reheat power generation system still includes oxygen-eliminating device 43 and high pressure feed water heater 33, and oxygen-eliminating device 43 and high pressure feed water heater 33 are connected with water supply line 16, and the inside of boiler 1 still is equipped with over heater 10, and main steam pipeline 20 is connected in over heater 10 of boiler 1, and high pressure feed water heater 33 is connected with high pressure feed water pipeline 32 with over heater 10, utilizes high pressure feed water heater 33 to be high pressure steam in order to input boiler 1 with the water heating.
A high-pressure steam line 32 is connected to the high-pressure cylinder 3 and the high-pressure heater 33, and a medium-pressure steam line 42 is connected to the intermediate pressure cylinder 4 and the deaerator 43. The cooled steam is circulated to the high pressure heater 33 by the high pressure steam line 32, and the cooled steam is circulated to the high pressure heater 33 by the medium pressure steam line 42, the deaerator 43 and the water supply line 16, and is reheated to increase the temperature to improve the work capacity.
A steam outlet of the low pressure cylinder 5 is connected with a condensed water pipeline 51, the condensed water pipeline 51 is also connected with a condenser 54 and a condensed water pump 17 in series, and condensed water is sent to the condensed water pipeline 51 through the condensed water pump 17; the low-pressure heater 53 is connected in series to the condensate pipe 51, the condenser 54 and the condensate pump 17 are sequentially provided between the low-pressure cylinder 5 and the low-pressure heater 53, and the low-pressure steam pipe 52 is connected to the low-pressure cylinder 5 and the low-pressure heater 53. The low-pressure heater 53 is used for heating and heating primarily to convey the steam to the water supply pipeline 16, so that the steam cooled after the high-pressure cylinder 3, the intermediate pressure cylinder 4 and the low-pressure cylinder 5 do work is recycled, and the residual heat of the steam is fully utilized.
In this embodiment, the steam-steam heat exchanger 13 and the primary reheat cooling section pipeline 21 are connected with a steam circulation pipeline 15, the steam after heat exchange is directly introduced into the primary reheat cooling section pipeline 21 through the steam circulation pipeline 15, and then the steam exhausted from the ultra-high pressure cylinder 2 and the steam exhausted from the steam-steam heat exchanger 13 are heated and heated by the primary reheater 11, so that the steam after heat exchange can be used for the high pressure cylinder 3 and the intermediate pressure cylinder 4 to do work after being heated.
Further, a condenser 54 is connected in series to the condensed water line 51, the condenser 54 is interposed between the low pressure cylinder 5 and the low pressure heater 53, and the steam discharged from the low pressure cylinder 5 is cooled by the condenser 54 into water to be treated by the low pressure heater 53 and the deaerator 43. A water feed pump 18 is connected in series between the deaerator 43 and the high-pressure heater 33 in the water feed line 16, and water is fed to the high-pressure heater 33 by the water feed pump 18 to be rapidly heated.
In embodiment 2 of the triple reheat power generation system of the present invention, in order to meet different use requirements, the connection position of the heating steam source pipeline can be adaptively adjusted, as shown in fig. 2, the present embodiment is different from embodiment 1 in that the steam-steam heat exchanger 13 and the primary reheat section pipeline 30 are connected with the heating steam source pipeline 14, and the high temperature steam in the primary reheat section pipeline 30 is used as a heat source to realize triple reheat. The high-temperature steam discharged by the primary reheater 11 is used for heating the steam in the tertiary reheating pipeline 41, the superheat degree of the steam discharged by the intermediate pressure cylinder 4 is improved, the fact that the tertiary reheating steam enters the low pressure cylinder 5 to realize effective work is guaranteed, and the steam heat energy is fully utilized and converted into electric energy.
Moreover, the steam-steam heat exchanger 13 and the secondary reheating cold section pipeline 31 or the high-pressure steam pipeline 32 are connected with a steam circulation pipeline 15, the steam after heat exchange is directly led into the secondary reheating cold section pipeline 31 through the steam circulation pipeline 15, and then the steam discharged by the high-pressure cylinder 3 and the steam discharged by the steam-steam heat exchanger 13 are heated and heated by the secondary reheating cold section pipeline 31, so that the steam after heat exchange can be reused for the intermediate pressure cylinder 4 to do work after being heated. Or, the steam circulation pipeline 15 directly leads the steam after heat exchange into the high-pressure steam pipeline 32, circulates the steam into the high-pressure heater 33 through the high-pressure steam pipeline 32, and heats the water into high-pressure steam by using the high-pressure heater 33 so as to input the steam into the boiler 1.
In embodiment 3 of the triple reheat power generation system of the present invention, in order to meet different use requirements, the connection position of the heating steam source pipeline can be adaptively adjusted, as shown in fig. 3, the present embodiment is different from embodiment 1 in that the steam-steam heat exchanger 13 and the double reheat heat section pipeline 40 are connected with the heating steam source pipeline 14, and high temperature steam in the double reheat heat section pipeline 40 is used as a heat source to realize triple reheat. The high-temperature steam discharged by the secondary reheater 12 is used for heating the steam in the tertiary reheating pipeline 41, the superheat degree of the steam discharged by the intermediate pressure cylinder 4 is improved, the fact that the tertiary reheating steam enters the low pressure cylinder 5 to realize effective work is guaranteed, and the steam heat energy is fully utilized and converted into electric energy.
The steam-steam heat exchanger 13 is connected to the medium pressure steam pipeline 42 or the low pressure steam pipeline 52 through the steam circulation pipeline 15, the steam after heat exchange is directly introduced into the medium pressure steam pipeline 42 or the low pressure steam pipeline 52 through the steam circulation pipeline 15, and the low pressure heater 53 and the high pressure heater 33 are used for heating water into high pressure steam to be input into the boiler 1.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (9)
1. A triple reheating power generation system is characterized by comprising a boiler, an ultrahigh pressure cylinder, a high pressure cylinder, an intermediate pressure cylinder, a low pressure cylinder and a generator, wherein the ultrahigh pressure cylinder, the high pressure cylinder, the intermediate pressure cylinder and the low pressure cylinder are all in transmission connection with the generator;
a primary reheater and a secondary reheater are arranged in the boiler, steam inlets of the boiler and the ultrahigh pressure cylinder are connected with a main steam pipeline, steam inlets of the primary reheater and the high pressure cylinder are connected with a primary reheating section pipeline, and steam inlets of the secondary reheater and the intermediate pressure cylinder are connected with a secondary reheating section pipeline;
the steam inlets of the intermediate pressure cylinder and the low pressure cylinder are connected with a tertiary reheating pipeline, a steam-steam heat exchanger is connected in series on the tertiary reheating pipeline, any one of the steam-steam heat exchanger and the main steam pipeline, the primary reheating section pipeline or the secondary reheating section pipeline is connected with a heating steam source pipeline, and hot steam of the heating steam source pipeline in the steam-steam heat exchanger is used for heating steam of the tertiary reheating pipeline.
2. The triple reheat power generation system according to claim 1, wherein a primary reheat cold section pipe is connected to the exhaust port of the ultra high pressure cylinder and the primary reheater;
and the steam-steam heat exchanger is also connected with a steam circulation pipeline, and the steam circulation pipeline is connected with the primary reheating cold section pipeline.
3. The triple reheat power generation system according to claim 1, wherein a secondary reheat cold stage line is connected to the exhaust port of the high pressure cylinder and the secondary reheater;
and the steam-steam heat exchanger is also connected with a steam circulation pipeline, and the steam circulation pipeline is connected with the secondary reheating cold section pipeline.
4. The triple reheat power generation system of claim 1, further comprising a high pressure heater, a high pressure steam line being connected between the high pressure cylinder and the high pressure heater;
and the steam-steam heat exchanger is also connected with a steam circulation pipeline, and the steam circulation pipeline is connected with the high-pressure steam pipeline.
5. The triple reheat power generation system of claim 1, further comprising a deaerator, wherein the intermediate pressure cylinder is connected to the deaerator with an intermediate pressure steam line;
the steam-steam heat exchanger is also connected with a steam circulation pipeline, and the steam circulation pipeline is connected with the medium-pressure steam pipeline.
6. The triple reheat power generation system according to claim 1, wherein a steam outlet of the low pressure cylinder is connected with a condensed water pipeline, a low pressure heater is connected in series on the condensed water pipeline, and a low pressure steam pipeline is connected between the low pressure cylinder and the low pressure heater;
and the steam-steam heat exchanger is also connected with a steam circulation pipeline, and the steam circulation pipeline is connected with the low-pressure steam pipeline.
7. The triple reheat power generation system according to claim 1, wherein a steam outlet of the low pressure cylinder is connected with a condensed water pipeline, a low pressure heater is connected in series on the condensed water pipeline, and a low pressure steam pipeline is connected between the low pressure cylinder and the low pressure heater;
the condenser and the condensate pump are sequentially arranged between the low-pressure cylinder and the low-pressure heater.
8. The triple reheating power generation system according to claim 1, further comprising a deaerator and a high-pressure heater, wherein the deaerator and the high-pressure heater are connected with a water supply pipeline, a superheater is further arranged inside the boiler, the main steam pipeline is connected to the superheater of the boiler, and a high-pressure steam pipeline is also connected between the high-pressure heater and the superheater.
9. The triple reheat power generation system of claim 8 wherein a feed pump is further connected in series between the deaerator and the high pressure heater in the feed line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111113087.XA CN113914949A (en) | 2021-09-22 | 2021-09-22 | Triple reheating power generation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111113087.XA CN113914949A (en) | 2021-09-22 | 2021-09-22 | Triple reheating power generation system |
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| CN113914949A true CN113914949A (en) | 2022-01-11 |
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| CN202111113087.XA Pending CN113914949A (en) | 2021-09-22 | 2021-09-22 | Triple reheating power generation system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB392700A (en) * | 1931-11-11 | 1933-05-25 | Goetaverken Ab | Improvements in or relating to multiple expansion reciprocating steam engines |
| CN202002081U (en) * | 2010-12-06 | 2011-10-05 | 中国电力工程顾问集团华东电力设计院 | Steam secondary reheating system |
| CN110030047A (en) * | 2019-05-21 | 2019-07-19 | 福建省东锅节能科技有限公司 | Heat generating system and its working method again three times |
| RU2752123C1 (en) * | 2020-10-09 | 2021-07-22 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Кубанский государственный технологический университет" (ФГБОУ ВО "КубГТУ") | Thermal power station |
-
2021
- 2021-09-22 CN CN202111113087.XA patent/CN113914949A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB392700A (en) * | 1931-11-11 | 1933-05-25 | Goetaverken Ab | Improvements in or relating to multiple expansion reciprocating steam engines |
| CN202002081U (en) * | 2010-12-06 | 2011-10-05 | 中国电力工程顾问集团华东电力设计院 | Steam secondary reheating system |
| CN110030047A (en) * | 2019-05-21 | 2019-07-19 | 福建省东锅节能科技有限公司 | Heat generating system and its working method again three times |
| RU2752123C1 (en) * | 2020-10-09 | 2021-07-22 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Кубанский государственный технологический университет" (ФГБОУ ВО "КубГТУ") | Thermal power station |
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Application publication date: 20220111 |