CN206267899U - A kind of three-exhauster 200MW turbine low pressure cylinders cooling steam pipe-line system - Google Patents
A kind of three-exhauster 200MW turbine low pressure cylinders cooling steam pipe-line system Download PDFInfo
- Publication number
- CN206267899U CN206267899U CN201621247551.9U CN201621247551U CN206267899U CN 206267899 U CN206267899 U CN 206267899U CN 201621247551 U CN201621247551 U CN 201621247551U CN 206267899 U CN206267899 U CN 206267899U
- Authority
- CN
- China
- Prior art keywords
- low pressure
- valve
- cylinder
- exhauster
- cooling
- 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
Abstract
A kind of three-exhauster 200MW turbine low pressure cylinders cooling steam pipe-line system, it is related to a kind of cooling steam pipe-line system.The utility model solves existing low pressure cylinder cooling system and occurs air blast phenomenon in actual use, easily, influences the problem of cooling effect.High pressure cylinder (1) of the present utility model, mesolow cylinder (2) and low pressure (LP) cylinder (3) are sequentially arranged from left to right, one end of first digital electro-hydraulic control system (4) is connected with mesolow cylinder (2), the other end of the first digital electro-hydraulic control system (4) is connected with one end of the first dcs (5), the other end of the first dcs (5) is connected with one end of electric check valve (6), the other end of electric check valve (6) is connected with one end of reducing-and-cooling plant (7), the other end of reducing-and-cooling plant (7) is connected with low pressure (LP) cylinder (3).The utility model is used for the cooling of turbine low pressure cylinder.
Description
Technical field
The utility model is related to a kind of cooling line system, and in particular to a kind of three-exhauster 200MW turbine low pressure cylinders are used
Cooling steam pipe-line system.
Background technology
The Northeast's peak regulation breach in heat supplying process constantly increases, and peak regulation is limited by heat supply, carries out peak regulation accumulation of heat
Mesh is very necessary.Because thermal source is single, have that heat supply cannot ensure safely asks the 350MW units that existing power plant is used
Topic.Therefore, according to the situation of actual heat supply, improved steam-turbine unit, steam turbine is low in heat supply phase and non-heat supply phase
Laminate section uses birotor interchangeabling form, and the non-heat supply phase, low pressure (LP) cylinder ran in pure condensate form still using former unit low pressure rotor；For
Hot phase low pressure rotor uses low pressure optical axis rotor, and now rotor only plays connection function, and low-pressure section is not done work generating, and in
Low pressure cross over pipe increases closure plate, and original enters #2, #3 low pressure (LP) cylinder steam and extracted out from heat supply pipeline, for heat supply.It is also desirable to increase
Plus low pressure cylinder cooling system, but in the heat supply phase, in actual use, easily there is air blast in existing low pressure cylinder cooling system
Phenomenon, influences cooling effect.
Utility model content
The utility model in order to solve existing low pressure cylinder cooling system occur in actual use, easily air blast show
As influenceing the problem of cooling effect, there is provided a kind of three-exhauster 200MW turbine low pressure cylinders cooling steam pipe-line system.
The technical solution of the utility model is a kind of three-exhauster 200MW turbine low pressure cylinders cooling steam pipe-line system,
It includes the first digital electro-hydraulic control system and the first dcs, high pressure cylinder, mesolow cylinder and low pressure (LP) cylinder
It is sequentially arranged from left to right, it also includes electric check valve and reducing-and-cooling plant, the first digital electro-hydraulic control system
One end be connected with mesolow cylinder, the other end of the first digital electro-hydraulic control system and the first dcs
One end connects, and the other end of the first dcs is connected with one end of electric check valve, the other end of electric check valve
It is connected with one end of reducing-and-cooling plant, the other end of reducing-and-cooling plant is connected with low pressure (LP) cylinder.
Further, it also includes the second dcs, and the second dcs is connected in parallel on pressure and temperature reducing
On device.
Further, it also include heat supply bleed steam pipework, heat supply bleed steam pipework be connected to the first dcs and
Between electric check valve.
Further, it also includes the second digital electro-hydraulic control system, the second steam turbine digital electrichydraulic control system
System is connected with mesolow cylinder.
Further, heat supply bleed steam pipework includes extraction line, rapid cut-off valve, electric control valve and startup non-return valve,
Pipeline connection between one end of extraction line and the first dcs and electric check valve, the other end of extraction line
It is connected with heat user, rapid cut-off valve, electric control valve and startup non-return valve are arranged on extraction line.
Further, rapid cut-off valve, electric control valve and startup non-return valve are sequentially arranged on extraction line.
Further, heat supply bleed steam pipework also includes spring loaded safety valve, and spring loaded safety valve is arranged on extraction line.
Further, spring loaded safety valve is arranged close to taking out for the first dcs and electric check valve side
On steam pipe road.
The utility model has following improvement effect compared with prior art：
The increased low pressure cylinder cooling system of the utility model, in the heat supply phase, after low pressure (LP) cylinder is passed through a stock-traders' know-how pressure and temperature reducing
Cooling steam, can effectively prevent low pressure (LP) cylinder air blast phenomenon, while electric check valve can quickly switch steam whether enter,
Manipulation is more accurate, quick, improves the cooling effect of low pressure (LP) cylinder.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model；Fig. 2 is that the utility model is arranged on into three-exhauster 200MW vapour
Overall structure diagram after on turbine.
Specific embodiment
Specific embodiment one：With reference to Fig. 1 and Fig. 2 explanation present embodiments, a kind of three-exhauster 200MW of present embodiment
Turbine low pressure cylinder cooling steam pipe-line system, it includes that the first digital electro-hydraulic control system 4 and first is distributed
Control system 5, high pressure cylinder 1, mesolow cylinder 2 and low pressure (LP) cylinder 3 are sequentially arranged from left to right, and it also includes electric check valve 6 and subtracts
Warm decompressor 7, one end of the first digital electro-hydraulic control system 4 is connected with mesolow cylinder 2, the first steam turbine digital electricity
The other end of liquid control system 4 is connected with one end of the first dcs 5, the first dcs 5 it is another
End is connected with one end of electric check valve 6, and the other end of electric check valve 6 is connected with one end of reducing-and-cooling plant 7, and desuperheat subtracts
The other end of pressure device 7 is connected with low pressure (LP) cylinder 3.
When running the heat supply phase, because vapour is no longer entered in steam turbine low-pressure part, low pressure optical axis still couples rotation with generator,
Air blast can be caused to generate heat, simultaneously because temperature field changes, cause whole low-pressure section expansion to change, it is necessary to optical axis
And steam turbine low-pressure part carries out appropriate cooling.Drawn gas from steam turbine heat supply and draw one steam after pressure and temperature reducing to low pressure (LP) cylinder
Carry out optical axis and low pressure (LP) cylinder cooling.The cooling system equipment composition such as including electric check valve, reducing-and-cooling plant, pipeline.Cooling
Flow is by control system according to low pressure (LP) cylinder exhaust temperature by the governor valve control on cooling steam pipeline.
Specific embodiment two：With reference to Fig. 2 illustrate present embodiment, present embodiment also include the second distributed AC servo system
System 8, the second dcs 8 is connected in parallel on reducing-and-cooling plant 7.It is arranged such, is easy to real to reducing-and-cooling plant 7
Row individually control.Other compositions and annexation are identical with specific embodiment one.
Specific embodiment three：Present embodiment is illustrated with reference to Fig. 2, present embodiment also includes heat supply bleed steam pipework 9, supplies
Hot bleed steam pipework 9 is connected between the first dcs 5 and electric check valve 6.It is arranged such, can be drawn gas from heat supply
Extract the steam of 5t/h or so in pipeline out, low pressure (LP) cylinder is cooled down after pressure and temperature reducing, be easy to accelerate the cooling to low pressure (LP) cylinder,
And cooling effect is more preferable.Other compositions and annexation are identical with specific embodiment one or two.
Specific embodiment four：Present embodiment is illustrated with reference to Fig. 2, present embodiment also includes the second steam turbine digital electricity
Liquid control system 10, the second digital electro-hydraulic control system 10 is connected with mesolow cylinder 2.It is arranged such, is easy to centering low
Cylinder pressure 2 is controlled.Other compositions and annexation are identical with specific embodiment one, two or three.
Specific embodiment five：Present embodiment is illustrated with reference to Fig. 2, the heat supply bleed steam pipework 9 of present embodiment includes taking out
Steam pipe road 9-4, rapid cut-off valve 9-1, electric control valve 9-2 and startup non-return valve 9-3, one end of extraction line 9-4 and first
Pipeline connection between dcs 5 and electric check valve 6, the other end of extraction line 9-4 is connected with heat user, soon
Fast shut-off valve 9-1, electric control valve 9-2 and startup non-return valve 9-3 are arranged on extraction line 9-4.It is arranged such, being easy to can
Steam in low pressure (LP) cylinder is drawn gas, heat supply user is used after drawing gas, effectively make use of the heat energy in Steam Turbine.Other
Composition and annexation are identical with specific embodiment three.
Specific embodiment six：Present embodiment, the rapid cut-off valve 9-1 of present embodiment, electric adjustable are illustrated with reference to Fig. 2
Section valve 9-2 and startup non-return valve 9-3 are sequentially arranged on extraction line 9-4.It is arranged such, is easy to real-time and convenient control to supply
It is given to the temperature and pressure of heat user, it is ensured that the heat supply of heat user needs.Other compositions and annexation and specific embodiment
Five is identical.
Specific embodiment seven：Present embodiment is illustrated with reference to Fig. 2, the heat supply bleed steam pipework 9 of present embodiment also includes
Spring loaded safety valve 9-5, spring loaded safety valve 9-5 are arranged on extraction line 9-4.It is arranged such, it is ensured that thermal source and heat user
Between security performance.Other compositions and annexation are identical with specific embodiment six.
Specific embodiment eight：Present embodiment is illustrated with reference to Fig. 2, the spring loaded safety valve 9-5 of present embodiment is installed
On the extraction line 9-4 near the first dcs 5 and the side of electric check valve 6.It is arranged such, is easy to ensure heat
The safe operation of source.Other compositions and annexation are identical with specific embodiment one, two or three.
The content of statement in detail is not in the prior art relevant with steam turbine in the utility model, and here is omitted.
Operation principle of the present utility model is：
In heat supply phase and non-heat supply phase, low-pressure section uses birotor interchangeabling form to steam turbine, and the non-heat supply phase is still using original
Unit low pressure rotor, low pressure (LP) cylinder runs in pure condensate form；Heat supply phase low pressure rotor uses low pressure optical axis rotor, and now rotor only rises
Connection function, low-pressure section is not done work generating, and is increasing closure plate mesolow communicating pipe, and original enters #2, #3 low pressure (LP) cylinder steam
Extracted out from heat supply pipeline, for heat supply.Meanwhile, increase low pressure cylinder cooling system, in the heat supply phase, low pressure (LP) cylinder is passed through a stock-traders' know-how desuperheat
Cooling steam after decompression, prevents low pressure (LP) cylinder air blast phenomenon.Can be reduced as far as possible using the transformation of low pressure optical axis auxiliary to former unit
Auxiliary system is transformed, and makes full use of turbine discharge heat supply, reduces cold source energy, increases heating load, and safe and reliable to operation, transformation is thrown
Money is return period short；Realize power plant for energy conservation emission reduction, using water wisely, create economic benefit.
After Transformation of Unit, original enters existing extraction the out by extraction line of #2, #3 low pressure (LP) cylinder steam carries out heat supply, is drawn gas by heat supply and taken out
The steam for going out 5t/h carries out low pressure (LP) cylinder cooling through the laggard low pressure (LP) cylinder of pressure and temperature reducing.After transformation each section of senior middle school's laminate section draw gas parameter and
The amount of drawing gas is substantially unchanged compared with former unit.It is greatly low-pressure section that therrmodynamic system changes, wherein adding into #1 low pressure originally
Three part heat recovery steams of hot device, only have #1 low pressure (LP) cylinder bleed steam pipeworks to remain in that and draw gas now.#2 low-pressure heatings after transformation
Device enters without heat recovery steam.
Original enters the steam of #2, #3 low pressure (LP) cylinder, carries out heating by the extraction line newly increased on communicating pipe, no longer
Into #2, #3 low pressure (LP) cylinder, system include heat supplying pipeline, electric control valve, spring loaded safety valve non-return valve, pressure and temp measuring point and
Control system etc. is constituted, a diameter of Φ 1400mm of heat supplying pipeline.
After three-exhauster steam turbine is exchanged into optical axis rotor at low pressure (LP) cylinder, and cooling line is installed at low pressure (LP) cylinder, it is above-mentioned
The embodiment of technical scheme after improvement when actually used is as follows：
1) cancel 2 × 5 grades of #2, #3 low pressure (LP) cylinder through-flow, remove low pressure whole dividing plate and Condensed low pressure rotor.
2) a low pressure optical axis rotor is redesigned, is only served and middle pressure rotor and generator amature is connected into transmitting torque
Effect.Be the interchangeability for ensureing new and old rotor, new optical axis rotor still uses sleeve structure, its weight, Yang Du and critical speed with
Former low pressure rotor is essentially identical.The diameter of axle is former without changing still using former unit diameter of axle size before and after new design optical axis low pressure rotor
Low pressure radial journal bearing.
3) when Winter heat supply runs, transformation/change former mesolow communicating pipe, in mesolow communicating pipe rear portion increase closure plate,
Prevent steam flow from entering #2, #3 low pressure (LP) cylinder, increasing heat supply extraction line carries out steam supply, safety valve is provided with steam line, is adjusted
Section valve, non-return valve etc..
4) heat supply initial station heat exchanger drain temperature be 110 DEG C, it is hydrophobic proceed directly to the low pressure condensation water pipelines of #4 before.
5) increase low pressure cylinder cooling system, temperature-decreased pressure reducer, an electric check valve are set.Low pressure optical axis is transformed
Afterwards, low pressure optical axis can produce air blast phenomenon, low pressure (LP) cylinder is generated heat, and influence is brought to unit safety operation.Can be drawn gas from heat supply
Extract the steam of 5t/h or so in pipeline out, low pressure (LP) cylinder is cooled down after pressure and temperature reducing.The forward and backward packing of low pressure (LP) cylinder is kept to send vapour
And gland-sealing cooler draws gas.The corresponding condenser of #2, #3 low pressure (LP) cylinder continues to come into operation, and low pressure (LP) cylinder cooling steam is condensed into
Water.
Claims (8)
1. a kind of three-exhauster 200MW turbine low pressure cylinders cooling steam pipe-line system, it includes that the first steam turbine digital is electro-hydraulic
Control system (4) and the first dcs (5), high pressure cylinder (1), mesolow cylinder (2) and low pressure (LP) cylinder (3) are suitable from left to right
Secondary setting, it is characterised in that：It also includes electric check valve (6) and reducing-and-cooling plant (7), the electro-hydraulic control of the first steam turbine digital
One end of system (4) processed is connected with mesolow cylinder (2), the other end and first of the first digital electro-hydraulic control system (4)
One end connection of dcs (5), the other end of the first dcs (5) and the one of electric check valve (6)
End connection, the other end of electric check valve (6) is connected with one end of reducing-and-cooling plant (7), reducing-and-cooling plant (7) it is another
End is connected with low pressure (LP) cylinder (3).
2. a kind of three-exhauster 200MW turbine low pressure cylinders cooling steam pipe-line system according to claim 1, its feature
It is：It also includes the second dcs (8), and the second dcs (8) is connected in parallel on reducing-and-cooling plant (7)
On.
3. a kind of three-exhauster 200MW turbine low pressure cylinders cooling steam pipe-line system according to claim 2, its feature
It is：It also includes heat supply bleed steam pipework (9), and heat supply bleed steam pipework (9) is connected to the first dcs 5 and electronic section
Only between valve (6).
4. a kind of three-exhauster 200MW turbine low pressure cylinders cooling steam pipe-line system according to claim 3, its feature
It is：It also include the second digital electro-hydraulic control system (10), the second digital electro-hydraulic control system (10) with
Mesolow cylinder (2) is connected.
5. a kind of three-exhauster 200MW turbine low pressure cylinders cooling steam pipe-line system according to claim 3, its feature
It is：Heat supply bleed steam pipework (9) is including extraction line (9-4), rapid cut-off valve (9-1), electric control valve (9-2) and starts inverse
Only valve (9-3), one end of extraction line (9-4) and the pipeline between the first dcs (5) and electric check valve (6)
Connection, the other end of extraction line (9-4) is connected with heat user, rapid cut-off valve (9-1), electric control valve (9-2) and startup
Non-return valve (9-3) is arranged on extraction line (9-4).
6. a kind of three-exhauster 200MW turbine low pressure cylinders cooling steam pipe-line system according to claim 5, its feature
It is：Rapid cut-off valve (9-1), electric control valve (9-2) and startup non-return valve (9-3) are sequentially arranged on extraction line (9-4)
On.
7. a kind of three-exhauster 200MW turbine low pressure cylinders cooling steam pipe-line system according to claim 6, its feature
It is：Heat supply bleed steam pipework (9) also includes spring loaded safety valve (9-5), and spring loaded safety valve (9-5) is arranged on extraction line
On (9-4).
8. a kind of three-exhauster 200MW turbine low pressure cylinders cooling steam pipe-line system according to claim 7, its feature
It is：Spring loaded safety valve (9-5) is arranged close to taking out for the first dcs (5) and electric check valve (6) side
On steam pipe road (9-4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621247551.9U CN206267899U (en) | 2016-11-22 | 2016-11-22 | A kind of three-exhauster 200MW turbine low pressure cylinders cooling steam pipe-line system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621247551.9U CN206267899U (en) | 2016-11-22 | 2016-11-22 | A kind of three-exhauster 200MW turbine low pressure cylinders cooling steam pipe-line system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206267899U true CN206267899U (en) | 2017-06-20 |
Family
ID=59040369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621247551.9U Expired - Fee Related CN206267899U (en) | 2016-11-22 | 2016-11-22 | A kind of three-exhauster 200MW turbine low pressure cylinders cooling steam pipe-line system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206267899U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420139A (en) * | 2017-07-26 | 2017-12-01 | 华电电力科学研究院 | A kind of low pressure (LP) cylinder cooling steam device and operation method |
| CN107524478A (en) * | 2017-07-18 | 2017-12-29 | 华电电力科学研究院 | For the low pressure (LP) cylinder cooling device of extraction condensing back pressure system and its application |
-
2016
- 2016-11-22 CN CN201621247551.9U patent/CN206267899U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107524478A (en) * | 2017-07-18 | 2017-12-29 | 华电电力科学研究院 | For the low pressure (LP) cylinder cooling device of extraction condensing back pressure system and its application |
| CN107420139A (en) * | 2017-07-26 | 2017-12-01 | 华电电力科学研究院 | A kind of low pressure (LP) cylinder cooling steam device and operation method |
| CN107420139B (en) * | 2017-07-26 | 2023-09-01 | 华电电力科学研究院有限公司 | Low-pressure cylinder cooling steam device and operation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105003351B (en) | Gas machine waste heat energy is carried out the energy tower of the multi-energy form output of step recovery | |
| CN206267900U (en) | A kind of steam turbine low-pressure optical axis heat supply steam bleeding system | |
| CN105156160B (en) | A kind of front end processor is combined the through-flow parameter optimization of main steam turbine and carries effect peak regulation system | |
| CN104405459B (en) | For back pressure machine acting and the heating plant of Steam Turbine Through IP Admission steam discharge heating network | |
| CN204404310U (en) | Air cooling unit exhaust steam waste heat plural serial stage heating system | |
| CN109469522A (en) | A kind of steam exhaust cooling system and steam exhaust cooling means | |
| CN206267899U (en) | A kind of three-exhauster 200MW turbine low pressure cylinders cooling steam pipe-line system | |
| CN104807245B (en) | A kind of low temperature heat system and residual-heat utilization method | |
| CN107504543B (en) | Method for improving deep peak regulation of cogeneration unit by utilizing electric boiler heat supply | |
| CN201916008U (en) | Expansion power energy-saving system with high flow, low parameter and high back pressure | |
| CN104061027B (en) | The high temperature steam-extracting cooling system of Double reheat steam turbine thermodynamic system | |
| MXPA06010263A (en) | Method of power generation from pressure control stations of a natural gas distribution sytem. | |
| CN105679388A (en) | Multifunctional nuclear power plant | |
| CN108678821A (en) | A kind of steam turbine start and stop peak regulation heating system for realizing the decoupling of fired power generating unit thermoelectricity | |
| CN210483828U (en) | Energy-saving power generation and utilization system utilizing exhaust steam waste heat of steam turbine of thermal power plant | |
| CN110118346B (en) | Nuclear power starting electric boiler hot standby system and method | |
| CN104727867B (en) | The Application way of middle-low temperature heat and step-down heat absorbing type Steam Power Circulation system thereof | |
| CN205172659U (en) | Synthesize refrigerated double reheat unit thermodynamic system | |
| CN212157116U (en) | Main steam temperature and pressure reducing system of thermal power plant | |
| CN204609957U (en) | A kind of Air-cooler Unit Feed Pump drive unit | |
| CN208153075U (en) | A kind of steam turbine start and stop peak regulation heating system for realizing the decoupling of fired power generating unit thermoelectricity | |
| CN106989382A (en) | A kind of thermal power plant Slag Cooler for Circulation Fluidized Bed Boiler cooling water system | |
| CN102562200A (en) | Low-pressure residual heat steam power generation system | |
| CN208870655U (en) | It is a kind of to have the subsidiary engine system tune power source system for cutting cylinder functional bands heat supply | |
| CN206724137U (en) | A kind of system for preventing economizer exit working medium from vaporizing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170620 Termination date: 20171122 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |