CN202788958U - Improved safety heating supply system of thermal power station - Google Patents
Improved safety heating supply system of thermal power station Download PDFInfo
- Publication number
- CN202788958U CN202788958U CN2012203302495U CN201220330249U CN202788958U CN 202788958 U CN202788958 U CN 202788958U CN 2012203302495 U CN2012203302495 U CN 2012203302495U CN 201220330249 U CN201220330249 U CN 201220330249U CN 202788958 U CN202788958 U CN 202788958U
- Authority
- CN
- China
- Prior art keywords
- links
- boiler
- steam
- steam turbine
- pressure cylinder
- 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.)
- Expired - Fee Related
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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
Abstract
The utility model relates to a heating supply system, in particular to an improved safety heating supply system of a thermal power station. The safety heating supply system comprises a heating network heater 1, a high pressure bypass 11, a low pressure bypass 9, a boiler reheater 5, a boiler superheater 6 and a connecting pipeline. When a steam turbine breaks down, steam generated by the boiler superheater 6 enters the heating network heater 1 through the high pressure bypass 11, the low pressure bypass 9 and a steam contact pipe 8. The improved safety heating supply system of the thermal power station has the advantage that the problem that a unitization system is between a machine unit and a heating network initial station, and no other standby steam supply exists in the heating network initial station of the machine unit is resolved. After improvements, when the steam turbine is in an accident state, the heating network heater can work as long as a boiler can work normally.
Description
Technical field
The utility model relates to a kind of heating system, specifically, relates to a kind of safe heating system of improved cogeneration power plant.
Background technique
In recent years, the built and newly-built heat supply unit of more cogeneration of heat and power in (northwest, North, Northeast China) area in the three Norths, the heating system of power station heat supply unit conveniently seems particularly important in the normal operation of guarantee unit.A general 200MW heat supply unit, every unit all is equipped with a Gateway Station in Heating Network heating system.Set up meter for the unit between unit and the Gateway Station in Heating Network; the heat supply of two units is drawn gas and can't mutually be utilized; the Gateway Station in Heating Network of every unit is without other standby steam source; at Heating Period; if steam turbine disorderly closedown wherein; the draw gas operating mode operation of another steam turbine maximum can only guarantee 55% of full factory design Heating Load.If two whole faults of Turbo-generator Set, the whole heat network system of full factory will all be disintegrated, and outer net circulating water system may be damaged by frost, and accident is further enlarged.
And to guarantee the safety and stability of whole heating system, the safe heating system of a kind of improved cogeneration power plant of this novel proposition.
The model utility content
Goal of the invention of the present utility model is to propose a kind of safe heating system of improved cogeneration power plant.
In order to finish the purpose of this utility model, the technological scheme of employing is:
The utility model relates to a kind of safe heating system of cogeneration power plant, and described safe heating system comprises heat exchangers for district heating 1, turbine low pressure cylinder 2, Steam Turbine Through IP Admission 3, steam turbine high-pressure cylinder 4, boiler reheater 5, boiler superheater 6 and connecting pipeline; Boiler superheater 6 links to each other with steam turbine high-pressure cylinder 4, steam turbine high-pressure cylinder 4 links to each other with boiler reheater 5, boiler reheater 5 links to each other with Steam Turbine Through IP Admission 3, Steam Turbine Through IP Admission 3 is connected with turbine low pressure cylinder with heat exchangers for district heating 1 respectively and is connected, turbine low pressure cylinder 2 links to each other with vapour condenser 7, is connected to form low voltage bypass 9 between vapour condenser 7 and the boiler reheater 5; One end of steam liaison tube 8 is connected with heat exchangers for district heating 1, and the other end links to each other with low voltage bypass 9;
This first novel optimal technical scheme is: described boiler superheater links to each other by connecting tube C with steam turbine high-pressure cylinder, and steam turbine high-pressure cylinder links to each other by connecting tube D with boiler reheater, and connecting tube C links to each other by high pressure turbine by 11 with connecting tube D.
This second novel optimal technical scheme is: under the steam turbine failure condition, described boiler superheater 6 links to each other with boiler reheater 5 by high pressure turbine by 11, and boiler reheater 5 links to each other with low voltage bypass 9, links to each other with heat exchangers for district heating through steam liaison tube 8 again.
This 3rd novel optimal technical scheme is: the outlet port of described vapour condenser 7 is equipped with 1～3 vacuum valve lock; And preferred 1 or 2;
This 4th novel optimal technical scheme is: the outlet port of the pipeline that described heat exchangers for district heating 1 is connected with vapour condenser 7 is equipped with 1～3 vacuum valve lock, and preferred 1 or 2;
This 5th novel optimal technical scheme is: 2 power door operation are installed on the steam liaison tube.
The below makes further explanation content of the present utility model:
The situation of the normal operation of the thermodynamic system unit of thermoelectricity plant is: steam enters steam turbine high-pressure cylinder from boiler reheater through pipeline, after getting rid of, high-pressure cylinder enters boiler reheater, enter Steam Turbine Through IP Admission from boiler reheater steam out, in the heat supply phase, steam from the intermediate pressure cylinder eliminating, a part enters heat exchangers for district heating, carry out heating, another part enters turbine low pressure cylinder and continues the work done generating, the steam of getting rid of from low pressure (LP) cylinder enters vapour condenser and condenses into water, be sent to boiler and continue to be heated to be steam, then enter into boiler reheater, form circulation.
Superheated vapor in the boiler in the utility model heating system and heating system by the direct UNICOM of steam turbine, do not make steam turbine set under accident conditions, as long as boiler can move, and can be to the heat network system heat supply.
This is novel, and transformation is transformed to heat network system according to the thermodynamic system of thermoelectricity plant and the heat capacity of unit, increases the unit low voltage bypass to the heating vapour for subsequent use source of heat supply network.When the steam turbine set disorderly closedown, as long as boiler can move, can be to the heat network system heat supply, steam can pass through the external heat supply in this path of boiler superheater-high pressure turbine by-boiler reheater-low voltage bypass-heat exchangers for district heating.Boiler can utilize the bypass of unit high and low pressure to replenish steam supply to heat network system by underrun, and this moment, thermoelectricity plant was identical with the heating boiler function.
Description of drawings:
Fig. 1 is the safe heating system of embodiment 1 cogeneration power plant.
Embodiment of the present utility model only makes further explanation the utility model, not to this novel Composition of contents restriction.
Embodiment
A kind of safe heating system of cogeneration power plant comprises: heat exchangers for district heating 1, turbine low pressure cylinder 2, Steam Turbine Through IP Admission 3, steam turbine high-pressure cylinder 4, boiler reheater 5, boiler superheater 6 and connecting pipeline; Boiler superheater 6 links to each other with steam turbine high-pressure cylinder 4, steam turbine high-pressure cylinder 4 links to each other with boiler reheater 5, boiler reheater 5 links to each other with Steam Turbine Through IP Admission 3, Steam Turbine Through IP Admission 3 is connected with turbine low pressure cylinder with heat exchangers for district heating 1 respectively and is connected, turbine low pressure cylinder 2 links to each other with vapour condenser 7, is connected to form low voltage bypass 9 between vapour condenser 7 and the boiler reheater 5; One end of steam liaison tube 8 is connected with heat exchangers for district heating 1, and the other end links to each other with low voltage bypass 9;
Described boiler superheater links to each other by connecting tube C with steam turbine high-pressure cylinder, and steam turbine high-pressure cylinder links to each other by connecting tube D with boiler reheater, and connecting tube C links to each other by high pressure turbine by 11 with connecting tube D; Described boiler superheater links to each other with boiler reheater by high pressure turbine by, links to each other with heat exchangers for district heating through low voltage bypass again.
Under the normal operation condition, high pressure turbine by and low voltage bypass sealing, steam liaison tube A and steam liaison tube B sealing.
Under the steam turbine failure condition, described boiler superheater 6 links to each other with boiler reheater 5 by high pressure turbine by 11, boiler reheater 5 links to each other with low voltage bypass 9, link to each other with heat exchangers for district heating through steam liaison tube 8, steam can pass through the external heat supply in this path of boiler superheater-high pressure turbine by-boiler reheater-low voltage bypass-heat exchangers for district heating again.Schematic representation as shown in Figure 1.
The outlet port of described vapour condenser is equipped with 1 vacuum valve lock, and the outlet port of the pipeline that described heat exchangers for district heating is connected with vapour condenser is equipped with 1 vacuum valve lock; 2 power door operation are installed on the steam liaison tube; The steam liaison tube is that model is the steel pipe of DN500.
Claims (6)
1. the safe heating system of a cogeneration power plant, described safe heating system comprises heat exchangers for district heating (1), turbine low pressure cylinder (2), Steam Turbine Through IP Admission (3), steam turbine high-pressure cylinder (4), boiler reheater (5), boiler superheater (6) and connecting pipeline; Boiler superheater (6) links to each other with steam turbine high-pressure cylinder (4), steam turbine high-pressure cylinder (4) links to each other with boiler reheater (5), boiler reheater (5) links to each other with Steam Turbine Through IP Admission (3), Steam Turbine Through IP Admission (3) is connected 2 with heat exchangers for district heating (1) with turbine low pressure cylinder respectively) be connected, turbine low pressure cylinder (2) links to each other with vapour condenser (7), is connected to form low voltage bypass (9) between vapour condenser (7) and the boiler reheater (5); It is characterized in that an end of steam liaison tube (8) is connected with heat exchangers for district heating (1), the other end links to each other with low voltage bypass (9).
2. safe heating system according to claim 1, it is characterized in that, described boiler superheater (6) links to each other by connecting tube C with steam turbine high-pressure cylinder (4), steam turbine high-pressure cylinder (4) links to each other by connecting tube D with boiler reheater (5), and connecting tube C links to each other by high pressure turbine by (11) with connecting tube D.
3. safe heating system according to claim 1, it is characterized in that, under the steam turbine failure condition, described boiler superheater (6) links to each other with boiler reheater (5) by high pressure turbine by (11), boiler reheater (5) links to each other with low voltage bypass (9), passes through steam liaison tube (8) again and links to each other with heat exchangers for district heating.
4. safe heating system according to claim 1 is characterized in that, the outlet port of described vapour condenser (7) is equipped with 1～3 vacuum valve lock.
5. safe heating system according to claim 1 is characterized in that, the outlet port of the pipeline that described heat exchangers for district heating (1) is connected with vapour condenser (7) is equipped with 1～3 vacuum valve lock.
6. safe heating system according to claim 1 is characterized in that, 2 power door operation are installed on the steam liaison tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203302495U CN202788958U (en) | 2012-07-10 | 2012-07-10 | Improved safety heating supply system of thermal power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203302495U CN202788958U (en) | 2012-07-10 | 2012-07-10 | Improved safety heating supply system of thermal power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202788958U true CN202788958U (en) | 2013-03-13 |
Family
ID=47816233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203302495U Expired - Fee Related CN202788958U (en) | 2012-07-10 | 2012-07-10 | Improved safety heating supply system of thermal power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202788958U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352733A (en) * | 2013-06-29 | 2013-10-16 | 内蒙古电力勘测设计院 | Longitudinal arrangement of turbine building of 350 MW NCB unit |
| CN106931485A (en) * | 2017-04-01 | 2017-07-07 | 祝凤娟 | A kind of regulating of heating net method of utilization heating network energy storage |
| CN110925730A (en) * | 2019-10-16 | 2020-03-27 | 孙少强 | Emergency industrial heating system based on shutdown and non-shutdown of coal-fired generating set |
-
2012
- 2012-07-10 CN CN2012203302495U patent/CN202788958U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352733A (en) * | 2013-06-29 | 2013-10-16 | 内蒙古电力勘测设计院 | Longitudinal arrangement of turbine building of 350 MW NCB unit |
| CN103352733B (en) * | 2013-06-29 | 2016-02-10 | 内蒙古电力勘测设计院有限责任公司 | The longitudinal direction of the steam turbine building of 350MW level NCB unit is arranged |
| CN106931485A (en) * | 2017-04-01 | 2017-07-07 | 祝凤娟 | A kind of regulating of heating net method of utilization heating network energy storage |
| CN106931485B (en) * | 2017-04-01 | 2017-12-08 | 晟源高科(北京)科技有限公司 | A kind of regulating of heating net method using heating network energy storage |
| CN110925730A (en) * | 2019-10-16 | 2020-03-27 | 孙少强 | Emergency industrial heating system based on shutdown and non-shutdown of coal-fired generating set |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105697075A (en) | Extraction condensing heat supply system additionally provided with non-reheat medium-pressure steam turbine | |
| CN105863754A (en) | 700 DEG C ultra-supercritical secondary reheating thermodynamic system | |
| CN107060916A (en) | Cogeneration units depth peak regulation system and method are improved using regenerative apparatus heat supply | |
| CN206959102U (en) | Cogeneration units depth peak regulation system is improved using electric boiler heat supply | |
| CN107504543B (en) | Method for improving deep peak regulation of cogeneration unit by utilizing electric boiler heat supply | |
| CN112197258A (en) | Stable operation system and method for denitration device in emergency operation without shutdown of coal-electricity machine | |
| CN202788958U (en) | Improved safety heating supply system of thermal power station | |
| CN205480920U (en) | System for power station unit auxiliary steam header utilizes local boiler to supply vapour | |
| CN212154886U (en) | Industrial steam residual pressure cascade utilization system applied to coal-fired steam supply unit in shutdown non-shutdown mode | |
| CN112303610A (en) | Operation system and method for recovering high-energy water in shutdown and non-shutdown operation mode | |
| CN104976609A (en) | Water feeding heating system capable of improving denitration effect | |
| CN108843414B (en) | Working method for coupling and decoupling nuclear energy and conventional energy with reheating power generation system | |
| CN206539379U (en) | Cogeneration units depth peak regulation system is improved using regenerative apparatus heat supply | |
| CN206755145U (en) | Turbine high-pressure bypasses desuperheat water lines | |
| CN209279143U (en) | A kind of system promoting unit steam supply ability using reheater increase-volume | |
| CN202788961U (en) | Improved safety heating system between two heat machine units of thermal power station | |
| CN202732011U (en) | Combination thermal system of thermal power plant and thermal power plant | |
| CN104456519A (en) | Novel efficient water supply heat recovery system for secondary reheating unit | |
| CN112303604A (en) | Economizer temperature governing system that unit start-up process denitration was put into | |
| CN205235724U (en) | System for be used for improving siemens 1000MW600MW ultra supercritical unit denitration rate of putting into operation | |
| CN204283512U (en) | A kind of cogeneration turbine | |
| CN202580443U (en) | Steam-water separation reheater expansion joint | |
| CN105909327A (en) | Novel industrial steam pumping and heat supplying system of steam turbine | |
| CN210485839U (en) | Heat supply system | |
| CN213577455U (en) | Stable denitration device commissioning system for shutdown emergency operation of coal electric unit without stopping furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20170710 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |