CN215868661U - Nuclear energy peak regulation heat storage multi-parameter clean steam supply system - Google Patents
Nuclear energy peak regulation heat storage multi-parameter clean steam supply system Download PDFInfo
- Publication number
- CN215868661U CN215868661U CN202122270370.5U CN202122270370U CN215868661U CN 215868661 U CN215868661 U CN 215868661U CN 202122270370 U CN202122270370 U CN 202122270370U CN 215868661 U CN215868661 U CN 215868661U
- Authority
- CN
- China
- Prior art keywords
- steam
- pressure
- outlet
- heat storage
- pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
Landscapes
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The utility model provides a nuclear energy peak-shaving heat storage multi-parameter cleaning steam supply system which comprises a steam generator, wherein three steam outlets are arranged on the steam generator, the first steam outlet is connected with a steam inlet of a high-pressure cylinder of a steam turbine, the second steam outlet is connected with a steam inlet of a steam-water separation reheater, and the third steam outlet is connected with a high-voltage electric heat storage device through an input pipeline; a steam outlet of the high-voltage electric heat storage device is connected with a temperature and pressure reducing device through a conveying pipeline, two steam outlet pipelines are arranged on a high-pressure cylinder of the steam turbine, the first steam outlet pipeline is connected with a steam-water separation reheater, a steam outlet of the steam-water separation reheater is connected with a low-pressure cylinder of the steam turbine, a steam outlet of the low-pressure cylinder of the steam turbine is connected with a condenser, and the condenser cools steam and then enters a condensate pump; the steam generator is simple in structure and convenient and fast to operate, and can provide industrial steam with various parameters according to the external heat load requirement.
Description
Technical Field
The utility model relates to the technical field of clean nuclear energy heat supply, in particular to a nuclear energy peak-shaving heat storage multi-parameter clean steam supply system.
Background
The high-capacity nuclear power unit is usually a straight condensing unit, the temperature parameter of nuclear power main steam mainly comprising a pressurized water reactor is low, steam generated by a nuclear island is wet steam, if heat generated by the nuclear island only enters a steam turbine to generate electricity, most of the heat is taken away through a cold-end circulating water system, so that the heat efficiency of the whole plant is low, the environment is greatly polluted, and the heat generated by the nuclear island is not fully utilized.
With the clean low-carbon transformation of an energy power system, nuclear power is one of basic power sources of a zero-carbon energy system, the effect of supporting a power grid to absorb a high proportion of new energy is highlighted, and the situation of the synergistic development of the nuclear power and other new energy is accelerated, so that a nuclear power unit is required to have certain peak regulation capacity to meet the requirement that more new energy is accessed into the power grid.
The cogeneration unit generally realizes external heat supply by reducing temperature and pressure of new steam generated by a boiler and combining a certain section in the middle of a steam turbine or other various steam extraction modes, and requires certain superheat degree of the steam to meet the requirement of long-distance conveying, so that the phenomenon of steam condensed into water cannot occur in the conveying process along the way. With the implementation of the dual-carbon target, the approval of the industrial steam supply project in the traditional coal-fired mode is increasingly difficult, and the existing unit gradually faces the shutdown trend and is greatly replaced by new energy. The nuclear power belongs to clean energy, the nuclear island replaces the steam generated by the traditional coal-fired unit boiler to push a steam turbine generator unit to generate electricity, no carbon is discharged in the electricity production process, but peak regulation is relatively difficult due to the running characteristic of the nuclear island, the steam generated by the nuclear island is maintained in a saturated state, but the steam quantity is very large, and with the development of an electricity heat storage technology, the electricity heat storage can store the surplus electricity in a peak regulation period in an electricity heat storage device, so that the nuclear power plant can provide high-quality industrial steam, the electricity peak regulation in a certain range can be carried out on the premise of ensuring the normal running of the nuclear island, the heat efficiency of the nuclear power plant is further improved, the technology can also be used in a frequency modulation auxiliary service market and a peak regulation auxiliary service market, and the peak regulation depth is in direct proportion to the external heat load demand.
Disclosure of Invention
In view of the above, the present invention provides a nuclear energy peak-shaving heat storage multi-parameter clean steam supply system capable of providing industrial steam with various parameters according to the external heat load requirement.
The utility model is realized by adopting the following method: a nuclear energy peak-shaving heat storage multi-parameter cleaning steam supply system comprises a steam generator, wherein three steam outlets are formed in the steam generator, the first steam outlet is connected with a steam inlet of a high-pressure cylinder of a steam turbine, the second steam outlet is connected with a steam inlet of a steam-water separation reheater, and the third steam outlet is connected with a high-voltage electric heat storage device through an input pipeline; the steam outlet of the high-voltage heat storage device is connected with a temperature and pressure reducing device through a conveying pipeline, two steam outlet pipelines are arranged on a high-pressure cylinder of the steam turbine, the first steam outlet pipeline is connected with a steam-water separation reheater, the steam outlet of the steam-water separation reheater is connected with a low-pressure cylinder of the steam turbine, the steam outlet of the low-pressure cylinder of the steam turbine is connected with a condenser, the condenser cools steam and then enters a condensate pump, the condensate pump is connected with the steam generator through a steam-water circulation assembly, and the second steam outlet pipeline is connected with the low-voltage heat storage device; the steam outlet of the low-voltage heat storage device is connected with the desuperheater through a conveying pipeline, a conveying branch is connected to the conveying pipeline and is connected with the pressure adapter, a conveying branch pipe is connected to the conveying pipeline, and the conveying branch pipe is connected with the pressure adapter.
Furthermore, the steam-water circulation assembly comprises a low-pressure heater, a deaerator, a high-pressure water feed pump and a high-pressure heater, and a water outlet of the condensate pump is sequentially connected with the low-pressure heater, the deaerator, the high-pressure water feed pump and the high-pressure heater through pipelines and then enters the steam generator.
Furthermore, the temperature and pressure reducing device is connected with an outlet of the high-pressure feed water pump through a first leading pipeline.
Furthermore, the second leading pipeline of the desuperheater is connected with the outlet of the condensed water pump.
The utility model has the beneficial effects that: the nuclear energy utilization efficiency is further improved, taking a pressurized water reactor power plant as an example, the thermal efficiency is about 38%, after the method is adopted to supply heat to the outside, 1 ton of steam is supplied to each pair of outside heating steam, the emission of carbon dioxide is reduced by 0.34 ton, and the emission reduction effect is obvious; when the power grid has higher requirement on the electrical load of the nuclear power plant, the electric quantity generated by the steam turbine generator unit is completely on line, and the electric heat storage device heats steam by the heat stored by the electric heat storage device, so that the electric heat storage device can work for 24 hours and realize the peak regulation effect on the nuclear power unit.
Drawings
FIG. 1 is a block diagram schematically illustrating the structure of the present invention.
Wherein: the system comprises a steam generator 1, a steam turbine 2, a steam turbine high-pressure cylinder 3, a steam turbine low-pressure cylinder 4, a condenser 5, a condensate pump 6, a low-pressure heater 7, a deaerator 8, a high-pressure water feed pump 9, a high-pressure heater 10, a steam-water separation reheater 11, a high-pressure electric heat storage device 12, a low-pressure electric heat storage device 13, a pressure matcher 14, a temperature and pressure reduction device 15, a desuperheater 16, a conveying pipeline 17, a conveying pipeline 18, a conveying branch 19, a conveying branch pipe 20, a first leading pipeline 21 and a second leading pipeline 21.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
Referring to fig. 1, the present invention provides an embodiment: a nuclear energy peak-shaving heat storage multi-parameter cleaning steam supply system comprises a steam generator 1, wherein three steam outlets are formed in the steam generator 1, the first steam outlet is connected with a steam inlet of a steam turbine high-pressure cylinder 2, the second steam outlet is connected with a steam inlet of a steam-water separator reheater 10, and the third steam outlet is connected with a high-voltage electric heat storage device 11 through an input pipeline; a steam outlet of the high-voltage electric heat storage device 11 is connected with a temperature and pressure reducing device 14 through a conveying pipeline 16, two steam outlet pipelines are arranged on the high-pressure steam turbine cylinder 2, the first steam outlet pipeline is connected with a steam-water separation reheater 10, a steam outlet of the steam-water separation reheater 10 is connected with a low-pressure steam turbine cylinder 3, a steam outlet of the low-pressure steam turbine cylinder 3 is connected with a condenser 4, the condenser 4 cools steam and then enters a condensate pump 5, the condensate pump 5 is connected with the steam generator 1 through a steam-water circulation assembly, and the second steam outlet pipeline is connected with a low-voltage electric heat storage device 12; the steam outlet of the low-voltage heat storage device 12 is connected with the desuperheater 15 through a conveying pipeline 17, a conveying branch 18 is connected to the conveying pipeline 17, the conveying branch 18 is connected with the pressure matcher 13, a conveying branch pipe 19 is connected to the conveying pipeline 16, and the conveying branch pipe 19 is connected with the pressure matcher 13.
The utility model is further illustrated by the following specific examples:
high-pressure wet steam generated by a steam generator 1 is divided into three paths, the first path enters a steam turbine high-pressure cylinder 2 to push a steam turbine generator set to generate electricity, the second path enters a steam-water separation reheater 10 to heat wet steam exhausted by the steam turbine high-pressure cylinder 2, the third path enters a high-pressure electric heat storage device 11 through a pipeline, the steam is heated by the electric heat storage device, the wet steam is changed into steam with a certain superheat degree, and the quality of the steam is improved; steam heated by the high-voltage electric heat storage device 11 enters the temperature and pressure reduction device 14 through a pipeline, the steam in the temperature and pressure reduction device 14 is subjected to pressure fine adjustment according to external steam parameters, and the steam temperature is led and connected by the high-pressure water feed pump 8 through the first leading and connecting pipeline 20, so that the temperature is adjusted.
The wet steam discharged by the high-pressure turbine cylinder 2 is divided into two paths, the first path enters the steam-water separator reheater 10 and then enters the low-pressure turbine cylinder 3 after being heated, the steam turbine generator set is pushed to generate electricity, the steam discharged by the low-pressure turbine cylinder 3 enters the condensate pump 5 after being cooled by the condenser 4 and then enters the steam generator 1 after sequentially passing through the low-pressure heater 6, the deaerator 7, the high-pressure water feed pump 8 and the high-pressure heater 9 to complete steam-water circulation, the second path of steam outlet pipeline enters the low-pressure electric heat storage device 12, the steam is heated by the electric heat storage device and is changed into steam with certain superheat degree from the wet steam, the quality of the steam is improved, the heated steam enters the desuperheater 15 through the conveying pipeline 17 to be subjected to temperature micro-adjustment, and the temperature of the steam is led by the condensate pump 5 through the second leading pipeline 21, so that the temperature adjustment is realized.
The low-pressure steam led out from the conveying pipeline 17 is led into the pressure matcher 13 through a conveying branch 18, the high-pressure steam led out from the conveying pipeline 16 is led into the pressure matcher 13 through a conveying branch 19, and the two paths of steam are mixed in the pressure matcher 13 to form pressure steam with pressure between the high-pressure steam and the low-pressure steam, so that the steam pressure required by the outside is met.
The high-voltage electric heat storage device 11 and the low-voltage electric heat storage device 12 adopt an electric heating mode, steam can be heated and electric heat storage can be carried out simultaneously, a power supply can be led from a station power system and also can be led from a high-voltage distribution device after voltage transformation through a transformer, when the power grid has low requirements on the electric load of a nuclear power plant, in order to ensure normal operation of a nuclear island, part of electric quantity generated by the steam turbine generator unit is stored in the heat storage device in a hot mode, when the power grid has high requirements on the electric load of the nuclear power plant, the electric quantity generated by the steam turbine generator unit is completely on line, the electric heat storage device heats the steam by the stored heat, and further the electric heat storage device can work for 24 hours and realize peak regulation effect on the nuclear power plant.
The steam generator, the high-pressure turbine cylinder, the low-pressure turbine cylinder, the condenser, the condensate pump, the low-pressure heater, the deaerator, the high-pressure feed pump, the high-pressure heater, the moisture separator reheater, the high-pressure electric heat storage device, the low-pressure electric heat storage device, the pressure matcher, the temperature and pressure reducer and the desuperheater are all in the prior art, and those skilled in the art can clearly understand the prior art and will not be described in detail herein.
In a word, the utility model fully utilizes the characteristics of a thermodynamic system and a power supply system of a nuclear power plant, realizes external heat supply according to three conditions according to the characteristics of flow, pressure and temperature of main steam and reheated and cooled steam of the nuclear power plant, the development of heat storage technology in recent years and the characteristics of external requirements on steam parameters: the first condition is as follows: when the steam parameters required by the outside are high-pressure steam, punching and extracting the steam to be heated on a main steam pipeline, introducing the steam into a high-voltage electric heat storage device, reversely pushing the steam parameters to a plant boundary steam parameter according to the actual demand of an outside steam using point and by considering on-way resistance, adding a temperature and pressure reducing device at the outlet of the electric heat storage device to properly adjust the steam parameters so as to meet the parameters required by a steam using boundary, wherein the temperature and pressure reducing water is provided by a high-pressure water feeding pump, and the electric heat storage device is provided by service electricity; case two: when the steam parameters required by the outside are low-pressure steam, punching holes in a reheating and cooling steam pipeline for extracting the steam to be heated, introducing the steam into a low-voltage electric heat storage device, reversely pushing the steam parameters to a plant boundary steam parameter according to the actual requirements of the outside steam using point and by considering on-way resistance, additionally arranging a temperature reduction device at the outlet of the electric heat storage device to properly adjust the steam parameters so as to meet the parameters required by a steam using boundary, wherein the temperature reduction water is provided by a condensate pump, and the electric heat storage device is provided by station power; case three: when the steam parameters of the external requirements are medium-pressure steam, high-pressure steam and low-pressure steam are mixed in the pressure matcher according to a certain proportion through the pressure matcher, and the steam parameters of the external requirements are realized.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (4)
1. The utility model provides a clean steam supply system of nuclear energy peak regulation heat storage multiparameter, includes steam generator, its characterized in that: the steam generator is provided with three steam outlets, the first steam outlet is connected with a steam inlet of a high-pressure cylinder of the steam turbine, the second steam outlet is connected with a steam inlet of a moisture separator reheater, and the third steam outlet is connected with the high-voltage heat storage device through an input pipeline; the steam outlet of the high-voltage heat storage device is connected with a temperature and pressure reducing device through a conveying pipeline, two steam outlet pipelines are arranged on a high-pressure cylinder of the steam turbine, the first steam outlet pipeline is connected with a steam-water separation reheater, the steam outlet of the steam-water separation reheater is connected with a low-pressure cylinder of the steam turbine, the steam outlet of the low-pressure cylinder of the steam turbine is connected with a condenser, the condenser cools steam and then enters a condensate pump, the condensate pump is connected with the steam generator through a steam-water circulation assembly, and the second steam outlet pipeline is connected with the low-voltage heat storage device; the steam outlet of the low-voltage heat storage device is connected with the desuperheater through a conveying pipeline, a conveying branch is connected to the conveying pipeline and is connected with the pressure adapter, a conveying branch pipe is connected to the conveying pipeline, and the conveying branch pipe is connected with the pressure adapter.
2. The nuclear power peak-shaving heat-storage multi-parameter clean steam supply system according to claim 1, characterized in that: the steam-water circulation assembly comprises a low-pressure heater, a deaerator, a high-pressure water feed pump and a high-pressure heater, and a water outlet of the condensate pump is sequentially connected with the low-pressure heater, the deaerator, the high-pressure water feed pump and the high-pressure heater through pipelines and then enters the steam generator.
3. The nuclear power peak-shaving heat-storage multi-parameter clean steam supply system according to claim 2, characterized in that: the temperature and pressure reducing device is connected with the outlet of the high-pressure feed water pump through a first leading pipeline.
4. The nuclear power peak-shaving heat-storage multi-parameter clean steam supply system according to claim 1, characterized in that: and the inlet of the desuperheater is connected with the outlet of the condensed water pump through a second leading pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122270370.5U CN215868661U (en) | 2021-09-18 | 2021-09-18 | Nuclear energy peak regulation heat storage multi-parameter clean steam supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122270370.5U CN215868661U (en) | 2021-09-18 | 2021-09-18 | Nuclear energy peak regulation heat storage multi-parameter clean steam supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215868661U true CN215868661U (en) | 2022-02-18 |
Family
ID=80255196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122270370.5U Active CN215868661U (en) | 2021-09-18 | 2021-09-18 | Nuclear energy peak regulation heat storage multi-parameter clean steam supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215868661U (en) |
-
2021
- 2021-09-18 CN CN202122270370.5U patent/CN215868661U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Liu et al. | Heat–power decoupling technologies for coal-fired CHP plants: Operation flexibility and thermodynamic performance | |
| CN108316980B (en) | Fused salt heat accumulation and release peak shaving system of thermal power generating unit | |
| CN110005488B (en) | Energy-saving optimization method for high-back-pressure heat supply system | |
| CN111485964B (en) | Thermoelectric decoupling method for coal-fired power plant based on turboexpander | |
| CN102278299A (en) | Deep frequency conversion system of condensate pump of power station | |
| CN114909193B (en) | Thermal power generating unit flexible operation system based on fused salt heat storage | |
| CN113175367B (en) | Master control system for improving peak regulation capacity and flexibility of unit and operation method | |
| CN113623035A (en) | Nuclear energy peak regulation heat storage multi-parameter clean steam supply implementation method | |
| CN210264838U (en) | Water-spraying temperature-reducing heat and power decoupling operation system of cogeneration unit | |
| CN215868661U (en) | Nuclear energy peak regulation heat storage multi-parameter clean steam supply system | |
| CN211174242U (en) | Heating season cogeneration unit on-line electricity load adjusting system | |
| CN210483828U (en) | Energy-saving power generation and utilization system utilizing exhaust steam waste heat of steam turbine of thermal power plant | |
| CN110318961B (en) | Steam turbine set of power station and power generation method thereof | |
| CN201851174U (en) | Heat regenerative type steam-driven induced draft fan system and heating power circulation system of power plant | |
| CN110700909A (en) | Heating season cogeneration unit on-line electricity load adjusting system and adjusting method | |
| CN115807700A (en) | Nuclear-storage power generation system capable of realizing frequency modulation through low-pressure steam extraction and throttling and working method thereof | |
| CN201851182U (en) | Regenerative steam-driven primary air fan system and thermal circulation system of power station | |
| CN115031222A (en) | System and method for improving peak regulation capacity of thermal power generating unit by improved heat storage device | |
| CN212157116U (en) | Main steam temperature and pressure reducing system of thermal power plant | |
| CN114607481A (en) | Flexible peak regulation system of bypass and heat storage coupled combined cycle unit and operation method | |
| CN113141018A (en) | Cogeneration system capable of meeting balance of power supply and demand and heating power supply and demand | |
| CN111878949A (en) | Low-pressure-cylinder few-steam heating system and method capable of achieving annual operation | |
| CN219262468U (en) | Nuclear motor unit decoupling and supplying system based on chemical chain energy storage | |
| CN111608753A (en) | Peak regulation system of combined solid electric heat storage device for high-low bypass modification of cogeneration unit | |
| CN111485963A (en) | Energy-saving efficient low-emission steam turbine power generation device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |