CN105986845A - Steam pipeline system of steam turbine - Google Patents
Steam pipeline system of steam turbine Download PDFInfo
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- CN105986845A CN105986845A CN201510082385.5A CN201510082385A CN105986845A CN 105986845 A CN105986845 A CN 105986845A CN 201510082385 A CN201510082385 A CN 201510082385A CN 105986845 A CN105986845 A CN 105986845A
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- steam
- turbine
- condenser
- heater
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Abstract
The invention provides a steam pipeline system of a steam turbine, and aims at solving the problems of independent arrangement of an existing steam bypass, complex pipelines, unreasonable steam pipeline arrangement, and additional equipment investment and daily operation cost. The steam pipeline system of the steam turbine is characterized in that the intercommunity of an existing steam bypass of a backup steam condenser and the steam bypass of an air preheater are utilized, and the two bypasses are integrated into one bypass; the pressure of a first-stage temperature and pressure reduction device of the steam bypass of the backup steam condenser is adjusted into the pressure fitting the air preheater, so that an independent steam bypass of the air preheater can be saved; the steam is charged into the air preheater through another branch pipe after the flowing through the first-stage temperature and pressure reduction device of the steam bypass of the backup steam condenser. According to the steam pipeline system of the steam turbine, the steam pipelines are simple in design, and reasonable in arrangement, so that the equipment investment and daily operation cost can be effectively reduced.
Description
Technical field
The present invention relates to the steam-turbine pipe-line system of waste incineration and generating electricity, especially relate to a kind of containing steam-turbine bypass and air preheat
The steam-turbine pipe-line system of device heater.
Background technology
Known to utilize in the steam-turbine pipe-line system of garbage incineration power generation, its steam pipeline system mainly includes a master going steam turbine
Steam road, steam enters steam turbine acting generating through main steam road, and draw gas from turbine bleed point (the generally first order) it is empty pre-to supply boiler simultaneously
Device heating vapour；For ensureing that boiler combustion is properly functioning when steam turbine is broken down or there is hidden danger, also sets up one on main steam road and goes standby
The steam by-pass of condenser, go the steam by-pass of standby condenser mainly include pipeline, valve, one-level temperature-decreased pressure reducer, two grades of temperature-decreased pressure reducers,
Standby condenser；Furthermore, it is contemplated that steam turbine will be unable to guarantee and draws gas supply boiler air preheater when steam turbine is broken down or there is hidden danger,
Therefore, main steam pipe also sets up a steam by-pass removing air pre-heater, go the steam by-pass of air pre-heater mainly include pipeline,
Valve, temperature-decreased pressure reducer, air pre-heater.
Prior art shows, although going the steam by-pass of standby condenser and going the steam by-pass of air pre-heater to comprise pressure and temperature reducing the most equally
Device, but be all independent laying pipeline, reason is the vapour pressure after standby condenser steam by-pass one-level temperature-decreased pressure reducer or two grades of temperature-decreased pressure reducers
Power does not meets the requirement accessing air pre-heater.Problem is, two steam by-passes are independently laid, have that pipeline is complicated, vapour road layout is unreasonable,
Increase equipment investment and daily operating cost.
Summary of the invention
In order to solve existing steam by-pass and independently lay, exist that pipeline is complicated, vapour road layout is unreasonable, increase equipment investment and daily operating cost
Problem, the present invention proposes a kind of steam-turbine pipe-line system, and it utilizes steam by-pass and the steam by-pass of air pre-heater of standby condenser
Intercommunity and be integrated into a bypass, the pressure of the one-level temperature-decreased pressure reducer of standby condenser steam by-pass is adjusted to and is suitable for air pre-add
The pressure of hot device, cancels the steam by-pass of the independent air pre-heater laid, will after the one-level temperature-decreased pressure reducer of standby condenser steam by-pass
Steam is linked into air pre-heater by another lateral.Making steam pipework design simpler, layout is more reasonable, can efficiently reduce equipment
Investment and daily operating cost.
The technical solution adopted for the present invention to solve the technical problems is: a kind of steam-turbine pipe-line system, including major steam line and standby condensing
The steam by-pass of device, described major steam line mainly includes main pipeline, main valve, steam turbine, main condenser and leads to sky from bleeder steam mouth
The steam pipework of gas pre-heater, before main valve is arranged on steam turbine, after main condenser is arranged on steam turbine, by described standby condenser steam
Road mainly includes pipeline, sub valve, one-level temperature-decreased pressure reducer, two grades of temperature-decreased pressure reducers, standby condensers, it is characterized in that, steams at standby condenser
Also laying lateral after the one-level temperature-decreased pressure reducer of vapour bypass and steam is supplied air pre-heater, when steam turbine normally works, main valve is beaten
Open, bypass valve close, steam through described major steam line enter steam turbine acting generating, then from bleeder steam mouth by the road lead to air pre-
Heater；When steam turbine is out of service, main valve close, bypass valve open, steam through described steam by-pass enter one-level temperature-decreased pressure reducer it
After be divided into two branch roads, one of them branch road enters standby condenser again after two grades of temperature-decreased pressure reducers and another branch road leads to air preheating
Device.
Beneficial effects of the present invention: the present invention provides a kind of steam-turbine pipe-line system, utilizes the existing steam by-pass removing standby condenser and goes
The steam by-pass of air pre-heater two bypass intercommunity and be integrated into a bypass, the steam by-pass one-level desuperheat of standby condenser will be removed
The pressure of decompressor is adjusted to the pressure being suitable for air pre-heater, saves the steam by-pass removing air pre-heater, one-level temperature-decreased pressure reducer it
After steam is caused air pre-heater by branch, make steam pipework simpler, layout is more reasonable, can efficiently reduce equipment investment and daily
Operation cost.
Accompanying drawing explanation
Fig. 1 is that existing steam-turbine pipe-line system arranges schematic diagram.
Fig. 2 is the layout schematic diagram of one embodiment of steam-turbine pipe-line system that the present invention proposes.
In figure:
1 major steam line, 1.1 main pipelines, 1.2 main valves, 1.3 steam turbines, 1.4 main condensers, 1.5 remove air pre-heater pipeline,
2 standby condenser steam by-passes, 2.1 pipelines, 2.2 standby condenser sub valves, 2.31 one-level temperature-decreased pressure reducers, 2.32 2 grades of pressure and temperature reducings
Device, 2.4 standby condensers,
3 air pre-heater steam by-passes, 3.1 pipelines, 3.2 air pre-heater sub valves, 3.3 temperature-decreased pressure reducers, 3.4 air pre-heater.
Detailed description of the invention
Fig. 1 is that existing steam-turbine pipe-line system arranges schematic diagram.Figure shows, known to utilize the steam-turbine of garbage incineration power generation
In pipe-line system, including major steam line 1, the steam by-pass 2 of standby condenser, the steam by-pass 3 of air pre-heater.
Major steam line 1 mainly includes pipeline 1.1, main valve 1.2, steam turbine 1.3, main condenser 1.4 and leads to sky from bleeder steam mouth
The steam pipework 1.5 of gas pre-heater, before main valve 1.2 is arranged on steam turbine 1.3, after main condenser 1.4 is arranged on steam turbine 1.3；
Standby condenser steam by-pass 2 mainly includes that pipeline 2.1, standby condenser sub valve 2.2,2.31, two grades of desuperheats of one-level temperature-decreased pressure reducer subtract
Depressor 2.32, standby condenser 2.4；
Air pre-heater steam by-pass 3 mainly includes pipeline 3.1, air pre-heater sub valve 3.2, temperature-decreased pressure reducer 3.3, air preheating
Device 3.4.
When steam turbine 1.3 normally works, main valve 1.2 is opened, bypass valve 2.2,3.2 closedown simultaneously, and steam enters through major steam line 1
Steam turbine 1.3 acting generating, then through steam pipework 1.5, steam supplied air pre-heater 3.4 from steam turbine 1.3 bleeding point；
When steam turbine 1.3 is out of service, main valve 1.2 is closed, the most standby condenser sub valve 2.2, air pre-heater sub valve 3.2
Opening, steam bypasses into from two, and wherein a road steam enters 2.31, two grades of desuperheats of one-level temperature-decreased pressure reducer through the pipeline 2.1 of steam by-pass 2
Decompressor 2.32 enters standby condenser 2.4；Another road steam enters air after the pipeline 3.1 of steam by-pass 3 enters temperature-decreased pressure reducer 3.3
Pre-heater 3.4.
Prior art shows, although standby condenser steam by-pass 2 and air pre-heater steam by-pass 3 comprise temperature-decreased pressure reducer the most equally, but
Both are independent to lay pipeline, reason be through the one-level temperature-decreased pressure reducer 2.31 of standby condenser steam by-pass 2 or two grades of temperature-decreased pressure reducers 2.32 it
After steam pressure do not meet access air pre-heater 3.4 requirement.Therefore steam by-pass can only independently be laid.Problem is, two steam by-passes
Independent lay, will have that pipeline is complicated, vapour road layout is unreasonable, the increase various problem such as equipment investment and daily operating cost.
Fig. 2 is the layout schematic diagram of one embodiment of steam-turbine pipe-line system that the present invention proposes.Figure shows, unlike the prior art,
The present invention utilizes the steam by-pass of existing standby condenser and the intercommunity of steam by-pass two bypass of air pre-heater and is integrated into one
Individual bypass, is adjusted to the pressure being suitable for air pre-heater by the pressure of the steam by-pass one-level temperature-decreased pressure reducer of standby condenser, saves except air is pre-
The steam by-pass of heater, is linked into air pre-heater by steam by lateral after one-level temperature-decreased pressure reducer, makes steam pipework simpler,
Layout is more reasonable, can efficiently reduce equipment investment and daily operating cost.
Showing in figure, in this example, a kind of steam-turbine pipe-line system, including the steam by-pass 2 of major steam line 1 and standby condenser.
Major steam line 1 mainly includes pipeline 1.1, main valve 1.2, steam turbine 1.3, main condenser 1.4 and leads to sky from bleeder steam mouth
The steam pipework 1.5 of gas pre-heater, before main valve 1.2 is arranged on steam turbine 1.3, after main condenser 1.4 is arranged on steam turbine 1.3.
Standby condenser steam by-pass 2 mainly includes that pipeline 2.1, standby condenser sub valve 2.2,2.31, two grades of desuperheats of one-level temperature-decreased pressure reducer subtract
Depressor 2.32, standby condenser 2.4.Unlike the prior art, after one-level temperature-decreased pressure reducer 2.31, also lay pipeline 3.1 to be supplied by steam
To air pre-heater 3.4.Key issue is that the pressure of one-level temperature-decreased pressure reducer 2.31 is adjusted to the pressure being suitable for accessing air pre-heater 3.4.
When steam turbine 1.3 normally works, main valve 1.2 opens, simultaneously bypass valve 2.2 close, steam enters steamer through major steam line 1
Machine 1.3 acting generating, then through steam pipework 1.5, steam supplied air pre-heater 3.4 from steam turbine 1.3 bleeding point；
When steam turbine 1.3 is out of service, main valve 1.2 is closed, the most standby condenser sub valve 2.2 is opened, and steam steams from standby condenser
Vapour bypass 2 entrance, enters standby condenser 2.4, meanwhile, at one-level desuperheat through 2.31, two grades of temperature-decreased pressure reducers 2.32 of one-level temperature-decreased pressure reducer
After decompressor 2.31, steam enters air pre-heater 3.4 through another lateral 3.1.
Claims (1)
1. a steam-turbine pipe-line system, including major steam line and the steam by-pass of standby condenser, described major steam line mainly includes supervisor
Road, main valve, steam turbine, main condenser and from bleeder steam mouth lead to air pre-heater steam pipework, main valve is arranged on vapour
Before turbine, after main condenser is arranged on steam turbine, described standby condenser steam by-pass mainly includes pipeline, sub valve, one-level desuperheat
Decompressor, two grades of temperature-decreased pressure reducers, standby condensers, is characterized in that, after the one-level temperature-decreased pressure reducer of standby condenser steam by-pass also
Lay lateral and steam supplied air pre-heater,
When steam turbine normally works, main valve is opened, bypass valve is closed, and steam enters steam turbine acting through described major steam line and generates electricity, so
After from bleeder steam mouth by the road lead to air pre-heater；When steam turbine is out of service, main valve is closed, bypass valve is opened, and steams
Vapour enters after one-level temperature-decreased pressure reducer through described steam by-pass and is divided into two branch roads, one of them branch road laggard through two grades of temperature-decreased pressure reducers again
Enter standby condenser and another branch road leads to air pre-heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510082385.5A CN105986845A (en) | 2015-02-15 | 2015-02-15 | Steam pipeline system of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510082385.5A CN105986845A (en) | 2015-02-15 | 2015-02-15 | Steam pipeline system of steam turbine |
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| Publication Number | Publication Date |
|---|---|
| CN105986845A true CN105986845A (en) | 2016-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510082385.5A Pending CN105986845A (en) | 2015-02-15 | 2015-02-15 | Steam pipeline system of steam turbine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022926A (en) * | 2019-12-20 | 2020-04-17 | 河南开祥精细化工有限公司 | Steam balancing device and using method thereof |
Citations (6)
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| US3271961A (en) * | 1964-10-22 | 1966-09-13 | Babcock & Wilcox Co | Start-up system for forced flow vapor generator |
| JP2000303803A (en) * | 1999-04-21 | 2000-10-31 | Nippon Steel Corp | Power generation system |
| CN203703988U (en) * | 2014-01-27 | 2014-07-09 | 武汉都市环保工程技术股份有限公司 | Overhaul working condition waste heat recovery system for large-scale waste incineration power plant |
| CN203731456U (en) * | 2014-02-26 | 2014-07-23 | 浙江浙能技术研究院有限公司 | Boiler flue gas temperature rise device for thermal generator unit |
| CN203796333U (en) * | 2014-04-18 | 2014-08-27 | 国电科学技术研究院 | Ultra-supercritical double reheat bypass system for double-shaft steam turbine |
| CN204572082U (en) * | 2015-02-15 | 2015-08-19 | 深圳市能源环保有限公司 | A kind of steam-turbine pipe-line system |
-
2015
- 2015-02-15 CN CN201510082385.5A patent/CN105986845A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3271961A (en) * | 1964-10-22 | 1966-09-13 | Babcock & Wilcox Co | Start-up system for forced flow vapor generator |
| JP2000303803A (en) * | 1999-04-21 | 2000-10-31 | Nippon Steel Corp | Power generation system |
| CN203703988U (en) * | 2014-01-27 | 2014-07-09 | 武汉都市环保工程技术股份有限公司 | Overhaul working condition waste heat recovery system for large-scale waste incineration power plant |
| CN203731456U (en) * | 2014-02-26 | 2014-07-23 | 浙江浙能技术研究院有限公司 | Boiler flue gas temperature rise device for thermal generator unit |
| CN203796333U (en) * | 2014-04-18 | 2014-08-27 | 国电科学技术研究院 | Ultra-supercritical double reheat bypass system for double-shaft steam turbine |
| CN204572082U (en) * | 2015-02-15 | 2015-08-19 | 深圳市能源环保有限公司 | A kind of steam-turbine pipe-line system |
Non-Patent Citations (1)
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| 杨键: "垃圾焚烧发电厂汽轮机旁路系统的设计", 《中国科技博览》 * |
Cited By (1)
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| CN111022926A (en) * | 2019-12-20 | 2020-04-17 | 河南开祥精细化工有限公司 | Steam balancing device and using method thereof |
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