CN102797523A - Bleeder steam and exhaust steam comprehensive utilization method for nuclear turbine - Google Patents
Bleeder steam and exhaust steam comprehensive utilization method for nuclear turbine Download PDFInfo
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- CN102797523A CN102797523A CN2012102925864A CN201210292586A CN102797523A CN 102797523 A CN102797523 A CN 102797523A CN 2012102925864 A CN2012102925864 A CN 2012102925864A CN 201210292586 A CN201210292586 A CN 201210292586A CN 102797523 A CN102797523 A CN 102797523A
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- 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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
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Abstract
The invention belongs to a nuclear energy utilization technology, and particularly relates to a bleeder steam and exhaust steam comprehensive utilization method for a nuclear turbine. The method comprises the following steps of: after high-temperature steam generated by a reactor enters a high-pressure cylinder of a steam turbine, feeding bleeder steam into a steam-water separator reheater; removing moisture from bleeder steam of the high-pressure cylinder to obtain overheated steam, and feeding the overheated steam into a low-pressure cylinder of the steam turbine; extracting steam from a middle stage of the steam turbine for serving as a heat source for regional heat supply and industrial steam supply, or taking bleeder steam of the low-pressure cylinder of the steam turbine or dump steam of the high-pressure cylinder or exhaust steam of the steam turbine as a heat source for desalting seawater, and generating power by using remaining steam under the condition that thermal load is met. In the method, nuclear energy is used for supplying heat, so that the running cost can be lowered, and the economic benefit is increased; and a modular nuclear heat supply unit runs in a flexible way, and has high heat supply safety and high adaptability.
Description
Technical field
The invention belongs to the nuclear energy uses technology, be specifically related to a kind of nuclear steam turbine and draw gas and the exhaust steam method of comprehensive utilization.
Background technique
At present, the nuclear power station in labour is the condensing power station of single power supply.Utilize nuclear energy to carry out a large amount of research for district heating, the reactor that is exclusively used in nuclear heating is seldom used in reality.And the operating cost of conventional coal-fired thermal power factory grows to even greater heights, environmental protection pressure is increasing.Development along with low temperature nuclear reactor; After disposing suitable steam turbine; Utilize nuclear steam turbine draw gas with exhaust steam as thermal source, for industrial user's steam supply, for cities and towns district heating (confession high-temperature water), for desalination of sea water provide the technological scheme of thermal source can cut operating costs, reduce the discharging and the heat supply Security be greatly improved.
Summary of the invention
The objective of the invention is to defective, provide a kind of and utilize nuclear energy steam turbine to draw gas high-temperature steam and heat supply high-temperature water to be provided, to utilize extracted steam from turbine and exhaust steam technological method for the user as the desalination of sea water thermal source to existing conventional coal-fired thermal power factory.
Technological scheme of the present invention is following: a kind of nuclear steam turbine draws gas and the exhaust steam method of comprehensive utilization; After the high-temperature steam that reactor produces gets into steam turbine high-pressure cylinder, steam discharge is sent into separator, remove the moisture in the high-pressure cylinder steam discharge; Get into turbine low pressure cylinder after making it to become superheated vapor; Draw gas as the thermal source of district heating, industrial steam supply from the steam turbine intergrade, perhaps, from turbine low pressure cylinder draw gas or high-pressure cylinder steam discharge or exhaust steam in steam turbine as the thermal source of desalination of sea water; Satisfying under the condition of heat load, all the other steam are used for generating electricity.
Further, aforesaid nuclear steam turbine draws gas and the exhaust steam method of comprehensive utilization, and wherein, exhaust steam in steam turbine enters vapour condenser, then through the heater preheating, after oxygen-eliminating device deoxygenation and the heating, returns the reactor secondary circuit side by the feed water pump pressurization.
Further, aforesaid nuclear steam turbine draws gas and the exhaust steam method of comprehensive utilization, wherein; When the steam turbine intergrade is drawn gas as heat source; The introducing heat exchangers for district heating that will draw gas is used to heat the heat supply network circulating water in the heat exchangers for district heating, delivers to hot user and carries out heating; Heating steam is hydrophobic delivers to vapour condenser or oxygen-eliminating device through the drainage pump pressurization.
Further; Aforesaid nuclear steam turbine draws gas and the exhaust steam method of comprehensive utilization, wherein, and under the steam turbine fault condition; Heat exchangers for district heating is introduced in the part main steam decompression back that gets into steam turbine high-pressure cylinder, utilize the heat supply network circulating water in the main steam heating heat exchangers for district heating.
Further, aforesaid nuclear steam turbine draws gas and the exhaust steam method of comprehensive utilization, and wherein, the hot user's that flows through backwater is boosted by circulating water pump after dirt removing device filters, and the circulating water after boosting heats through heat exchangers for district heating, delivers to hot user heating once more.
Further, aforesaid nuclear steam turbine draws gas and the exhaust steam method of comprehensive utilization, wherein, under the nominal situation, through provide desalination oxygen-removing water or softening oxygen-removing water as supplementing water for the heat supply network circulation, keeps the pressure of heat network system.
Further again, aforesaid nuclear steam turbine draws gas and the exhaust steam method of comprehensive utilization, wherein, under the accident conditions, when the water yield of desalination oxygen-removing water or softening oxygen-removing water is not enough, adopts industry water as the accident moisturizing.
Further; Aforesaid nuclear steam turbine draws gas and the exhaust steam method of comprehensive utilization, wherein, and when drawing gas from turbine low pressure cylinder or high-pressure cylinder steam discharge or exhaust steam in steam turbine during as the thermal source of seawater desalination system; Through turbine low pressure cylinder being drawn gas or high-pressure cylinder steam discharge or exhaust steam in steam turbine are sent into low-temperature multi-effect seawater desalination device; Utilize hot method to carry out desalination of sea water, cooled steam condensate is through the preheating of condensate pump process heater, after oxygen-eliminating device deoxygenation and the heating; Send the reactor secondary circuit side back to, carry out thermodynamic cycle.
Beneficial effect of the present invention is following: the present invention is steady basically according to the nuclear reactor load; The principle of electricity determining by heat; Through than selecting nuclear reactor parameter and steam turbine pattern, in generating, utilize extracted steam from turbine and exhaust steam as thermal source; For industrial user's steam supply, for cities and towns district heating (confession high-temperature water), for desalination of sea water provides thermal source, make maximizing the benefits.Nuclear energy is as a kind of clean energy resource, environmentally safe; Utilize nuclear heating, can reduce operating cost, increase economic efficiency; The modular type nuclear heat supply unit method of operation is flexible, heat supply is safe, adaptability is strong.
Description of drawings
Fig. 1 is a nuclear steam turbine thermodynamic system schematic representation;
Fig. 2 is an extraction for heat supply system schematic of the present invention;
Fig. 3 is a desalination of sea water principle schematic of the present invention.
Embodiment
Do detailed explanation below in conjunction with the accompanying drawing specific embodiments of the invention.
As shown in Figure 1; After the high-temperature steam that reactor 1 produces got into steam turbine high-pressure cylinder 2, steam discharge was sent into separator 3, removes moisture in the high-pressure cylinder steam discharge; And the temperature that improve to get into low pressure (LP) cylinder steam, make it to become and get into low pressure (LP) cylinder 4 behind the superheated vapor and continue acting.Extracted steam from turbine is as the thermal source of district heating, industrial steam supply, perhaps, from turbine low pressure cylinder draw gas or high-pressure cylinder steam discharge or exhaust steam in steam turbine as the thermal source of desalination of sea water.Satisfying under the condition of heat load, all the other steam are used for generating electricity.Exhaust steam in steam turbine enters gas condensating device 5, then through heater 6 preheatings, after oxygen-eliminating device 7 deoxygenations and the heating, returns the reactor secondary circuit side by the feed water pump pressurization.
As shown in Figure 2, the present invention is during as the urban heating thermal source, the steam turbine adjustment drawn gas introduce heat supply network heat exchanger 8, under the steam turbine fault condition, in order to guarantee the reliability of heat supply, heat exchangers for district heating introduced in the part main steam decompression back that gets into steam turbine high-pressure cylinder; Utilize the interior heat supply network circulating water of steam heating heat exchangers for district heating to improve its temperature, make supply water temperature satisfy hot user's demand.65 ℃ of backwater are boosted by circulating water pump 9 after dirt removing device filters, and the circulating water after boosting is heated into 125 ℃ through heat exchangers for district heating, delivers to each hot user heating.Under the nominal situation,, the heat supply network circulation keeps the pressure of heat network system as supplementing water for providing desalination (or softening) oxygen-removing water.Under the accident conditions,, adopt industry water as the accident moisturizing when desalination (or softening) when the deoxygenation water yield is not enough.Heating steam is hydrophobic delivers to vapour condenser (or oxygen-eliminating device) through drainage pump 10 pressurizations.
As shown in Figure 3; The present invention is during as desalination of sea water, through turbine low pressure cylinder being drawn gas or high-pressure cylinder steam discharge or exhaust steam in steam turbine are sent into low-temperature multi-effect seawater desalination device 11, as the thermal source of seawater desalination system; Utilize hot method to carry out desalination of sea water; Cooled steam condensate through the heater preheating, is sent reactor after oxygen-eliminating device deoxygenation and the heating through condensate pump 12, carries out thermodynamic cycle.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technology thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (8)
1. a nuclear steam turbine draws gas and the exhaust steam method of comprehensive utilization; It is characterized in that: after the high-temperature steam that reactor (1) produces gets into steam turbine high-pressure cylinder (2), steam discharge is sent into separator (3), remove the moisture in the high-pressure cylinder steam discharge; Get into turbine low pressure cylinder (4) after making it to become superheated vapor; Draw gas as the thermal source of district heating, industrial steam supply from the steam turbine intergrade, perhaps, from turbine low pressure cylinder draw gas or high-pressure cylinder steam discharge or exhaust steam in steam turbine as the thermal source of desalination of sea water; Satisfying under the condition of heat load, all the other steam are used for generating electricity.
2. nuclear steam turbine as claimed in claim 1 draws gas and the exhaust steam method of comprehensive utilization; It is characterized in that: exhaust steam in steam turbine enters vapour condenser (5); Through heater (6) preheating, after oxygen-eliminating device (7) deoxygenation and the heating, return the reactor secondary circuit side then by the feed water pump pressurization.
3. nuclear steam turbine as claimed in claim 1 draws gas and the exhaust steam method of comprehensive utilization; It is characterized in that: when the steam turbine intergrade is drawn gas as heat source; To draw gas and introduce heat exchangers for district heating (8), and be used to heat the heat supply network circulating water in the heat exchangers for district heating (8), and deliver to hot user and carry out heating; Heating steam is hydrophobic delivers to vapour condenser (5) or oxygen-eliminating device (7) through drainage pump (10) pressurization.
4. nuclear steam turbine as claimed in claim 3 draws gas and the exhaust steam method of comprehensive utilization; It is characterized in that: under the steam turbine fault condition; Heat exchangers for district heating (8) is introduced in the part main steam decompression back that gets into steam turbine high-pressure cylinder, utilize the heat supply network circulating water in the main steam heating heat exchangers for district heating (8).
5. nuclear steam turbine as claimed in claim 3 draws gas and the exhaust steam method of comprehensive utilization; It is characterized in that: the hot user's that flows through backwater is after dirt removing device filters; Boosted by circulating water pump (9), the circulating water after boosting is delivered to hot user heating once more through heat exchangers for district heating (8) heating.
6. nuclear steam turbine as claimed in claim 5 draws gas and the exhaust steam method of comprehensive utilization, it is characterized in that: under the nominal situation, through provide desalination oxygen-removing water or softening oxygen-removing water as supplementing water for the heat supply network circulation, keep the pressure of heat network system.
7. nuclear steam turbine as claimed in claim 6 draws gas and the exhaust steam method of comprehensive utilization, it is characterized in that: under the accident conditions, when the water yield of desalination oxygen-removing water or softening oxygen-removing water is not enough, adopt industry water as the accident moisturizing.
8. nuclear steam turbine as claimed in claim 1 draws gas and the exhaust steam method of comprehensive utilization; It is characterized in that: when drawing gas from turbine low pressure cylinder or high-pressure cylinder steam discharge or exhaust steam in steam turbine during as the thermal source of seawater desalination system; Through turbine low pressure cylinder being drawn gas or high-pressure cylinder steam discharge or exhaust steam in steam turbine are sent into low-temperature multi-effect seawater desalination device (11); Utilize hot method to carry out desalination of sea water, cooled steam condensate is through the preheating of condensate pump (12) process heater (6), after oxygen-eliminating device (7) deoxygenation and the heating; Send the reactor secondary circuit side back to, carry out thermodynamic cycle.
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Cited By (13)
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| CN103351034A (en) * | 2013-07-25 | 2013-10-16 | 江苏中核华纬工程设计研究有限公司 | High-temperature gas cooled reactor and low-temperature multiple-effect distillation seawater desalinization coupling device |
| CN103696819A (en) * | 2013-12-07 | 2014-04-02 | 广西柳州发电有限责任公司 | High pressure and low pressure two-stage industrial steam extraction heat supply device for steam turbine |
| CN103818978A (en) * | 2014-03-03 | 2014-05-28 | 孔令斌 | High-temperature gas cooled reactor nuclear electric power generation and sea water desalination device |
| CN105679388A (en) * | 2014-11-20 | 2016-06-15 | 中广核工程有限公司 | Multifunctional nuclear power plant |
| CN107420878A (en) * | 2017-03-28 | 2017-12-01 | 中国核电工程有限公司 | It is a kind of to carry out vapour, heat, the system of CCHP using nuclear energy |
| CN111834026A (en) * | 2020-06-12 | 2020-10-27 | 中国核电工程有限公司 | Industrial steam production system for pressurized water reactor nuclear power unit |
| CN112489843A (en) * | 2020-11-02 | 2021-03-12 | 中广核工程有限公司 | Nuclear power plant waste heat utilization system and nuclear power plant waste heat utilization method |
| CN112562879A (en) * | 2020-12-03 | 2021-03-26 | 东北大学 | Energy cascade utilization multi-element energy supply system based on nuclear energy |
| CN113091030A (en) * | 2021-04-06 | 2021-07-09 | 上海核工程研究设计院有限公司 | Nuclear power and thermal power coupling steam supply system |
| CN113113161A (en) * | 2021-04-06 | 2021-07-13 | 上海核工程研究设计院有限公司 | Nuclear energy steam supply system |
| CN113153466A (en) * | 2021-03-15 | 2021-07-23 | 中广核工程有限公司 | Nuclear power heating heat source system |
| CN114635766A (en) * | 2022-01-06 | 2022-06-17 | 国核电力规划设计研究院有限公司 | Valve setting and control system and method for heat supply steam extraction pipeline of pressurized water reactor nuclear power unit |
| CN115215414A (en) * | 2022-07-07 | 2022-10-21 | 西安交通大学 | Nuclear power station waste heat intensification electrodialysis system |
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Cited By (19)
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| CN103351034A (en) * | 2013-07-25 | 2013-10-16 | 江苏中核华纬工程设计研究有限公司 | High-temperature gas cooled reactor and low-temperature multiple-effect distillation seawater desalinization coupling device |
| CN103351034B (en) * | 2013-07-25 | 2015-03-25 | 江苏中核华纬工程设计研究有限公司 | High-temperature gas cooled reactor and low-temperature multiple-effect distillation seawater desalinization coupling device |
| CN103696819A (en) * | 2013-12-07 | 2014-04-02 | 广西柳州发电有限责任公司 | High pressure and low pressure two-stage industrial steam extraction heat supply device for steam turbine |
| CN103696819B (en) * | 2013-12-07 | 2015-10-28 | 广西柳州发电有限责任公司 | Steam turbine high low pressure two-stage extraction steam for factories heating arrangement |
| CN103818978A (en) * | 2014-03-03 | 2014-05-28 | 孔令斌 | High-temperature gas cooled reactor nuclear electric power generation and sea water desalination device |
| CN103818978B (en) * | 2014-03-03 | 2015-04-08 | 孔令斌 | High-temperature gas cooled reactor nuclear electric power generation and sea water desalination device |
| CN105679388A (en) * | 2014-11-20 | 2016-06-15 | 中广核工程有限公司 | Multifunctional nuclear power plant |
| CN107420878A (en) * | 2017-03-28 | 2017-12-01 | 中国核电工程有限公司 | It is a kind of to carry out vapour, heat, the system of CCHP using nuclear energy |
| CN111834026A (en) * | 2020-06-12 | 2020-10-27 | 中国核电工程有限公司 | Industrial steam production system for pressurized water reactor nuclear power unit |
| CN111834026B (en) * | 2020-06-12 | 2023-03-14 | 中国核电工程有限公司 | Industrial steam production system for pressurized water reactor nuclear power unit |
| CN112489843A (en) * | 2020-11-02 | 2021-03-12 | 中广核工程有限公司 | Nuclear power plant waste heat utilization system and nuclear power plant waste heat utilization method |
| CN112562879A (en) * | 2020-12-03 | 2021-03-26 | 东北大学 | Energy cascade utilization multi-element energy supply system based on nuclear energy |
| CN112562879B (en) * | 2020-12-03 | 2024-05-14 | 东北大学 | Energy cascade utilization multi-element energy supply system based on nuclear energy |
| CN113153466A (en) * | 2021-03-15 | 2021-07-23 | 中广核工程有限公司 | Nuclear power heating heat source system |
| CN113091030A (en) * | 2021-04-06 | 2021-07-09 | 上海核工程研究设计院有限公司 | Nuclear power and thermal power coupling steam supply system |
| CN113113161A (en) * | 2021-04-06 | 2021-07-13 | 上海核工程研究设计院有限公司 | Nuclear energy steam supply system |
| CN114635766A (en) * | 2022-01-06 | 2022-06-17 | 国核电力规划设计研究院有限公司 | Valve setting and control system and method for heat supply steam extraction pipeline of pressurized water reactor nuclear power unit |
| CN114635766B (en) * | 2022-01-06 | 2024-02-09 | 国核电力规划设计研究院有限公司 | Valve setting and controlling system and method for heat supply steam extraction pipeline of pressurized water reactor nuclear power unit |
| CN115215414A (en) * | 2022-07-07 | 2022-10-21 | 西安交通大学 | Nuclear power station waste heat intensification electrodialysis system |
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Application publication date: 20121128 |