CN206000583U - The clammy condensing turbine of 350MW supercritical triplex two steam discharge - Google Patents
The clammy condensing turbine of 350MW supercritical triplex two steam discharge Download PDFInfo
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- CN206000583U CN206000583U CN201621027408.9U CN201621027408U CN206000583U CN 206000583 U CN206000583 U CN 206000583U CN 201621027408 U CN201621027408 U CN 201621027408U CN 206000583 U CN206000583 U CN 206000583U
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Abstract
The clammy condensing turbine of 350MW supercritical triplex two steam discharge, it is related to a kind of steam turbine.This utility model solves the problems, such as that the cylinder flow losses that existing steam turbine exists are big, cylinder efficiency is low.Front bearing box, the first middle (center) bearing case, the second middle (center) bearing case and rear bearing housing are all arranged in frame using landing structure, high pressure cylinder is supported on front bearing box and the first middle (center) bearing case by upper ram's horn, and intermediate pressure cylinder is supported on the first middle (center) bearing case and the second middle (center) bearing case by upper ram's horn；Low pressure (LP) cylinder is arranged in frame using landing structure；The tandem setting successively along its length of high pressure cylinder, intermediate pressure cylinder and low pressure (LP) cylinder, high pressure cylinder, intermediate pressure cylinder and low pressure (LP) cylinder are inside and outside double shell structure, it is attached by rigid flange shaft coupling between pressure rotor and turbine shafting low pressure rotor in turbine shafting high pressure rotor, turbine shafting, turbine shafting high pressure rotor and turbine shafting low pressure rotor are dual-support structure.This utility model is used for coal fired power generation field.
Description
Technical field
This utility model is related to a kind of clammy condensing turbine and in particular to a kind of 350MW supercritical triplex two steam discharge
Clammy condensing turbine.
Background technology
As the Core equipment of coal fired power generation, the technology of steam turbine and product will be to improve efficiency as target, in high temperature material
A new developmental milestone is welcome on the basis of material research and development and a series of advanced technology.The development of new round coal-fired power generator set
Core is to carry forward vigorously the technology such as the designing technique of raising product, manufacturing process and optimization of Thermal System, and is related to improve
Steam parameter, flow passage component optimization design, structure optimization, cold end optimization, thermodynamic cycle and system optimization, Advanced Manufacturing Technology etc.
Field.The depth of these technical fields development and level determines the height of steam turbine property level of new generation and market is competing
Strive power.
To sum up, the cylinder flow losses of existing steam turbine are big, cylinder efficiency is low.
Utility model content
This utility model is to solve the problems, such as that the cylinder flow losses that existing steam turbine exists are big, cylinder efficiency is low, and then
Provide a kind of clammy condensing turbine of 350MW supercritical triplex two steam discharge.
This utility model is to solve above-mentioned technical problem to adopt the technical scheme that：
The clammy condensing turbine of 350MW supercritical triplex two steam discharge of the present utility model includes front bearing box 1, high pressure cylinder
2nd, the first middle (center) bearing case 3, turbine shafting high pressure rotor 4, pressure rotor 5, intermediate pressure cylinder 6, the second middle (center) bearing case in turbine shafting
7th, low pressure (LP) cylinder 8, turbine shafting low pressure rotor 9 and rear bearing housing 10, front bearing box 1, the first middle (center) bearing case 3, the second middle (center) bearing
Case 7 and rear bearing housing 10 are all arranged in frame using landing structure, and high pressure cylinder 2 is supported on front bearing box 1 He by upper ram's horn
On first middle (center) bearing case 3, intermediate pressure cylinder 6 is supported on the first middle (center) bearing case 3 and the second middle (center) bearing case 7 by upper ram's horn；Low pressure (LP) cylinder 8
It is arranged in frame using landing structure；The tandem setting successively along its length of high pressure cylinder 2, intermediate pressure cylinder 6 and low pressure (LP) cylinder 8, high pressure
Cylinder 2, intermediate pressure cylinder 6 and low pressure (LP) cylinder 8 are inside and outside double shell structure, and in turbine shafting high pressure rotor 4, turbine shafting, pressure turns
It is attached by rigid flange shaft coupling between son 5 and turbine shafting low pressure rotor 9, turbine shafting high pressure rotor 4 He
Turbine shafting low pressure rotor 9 is dual-support structure；The middle pressure rotor of intermediate pressure cylinder 6 is provided with cooling system.
This utility model compared with prior art has the advantages that：
The clammy condensing turbine of 350MW supercritical triplex two steam discharge of the present utility model gives full play to multistage reactionary style skill
Art advantage, each steam end efficiency all improves 1-2%；
Senior middle school's air cylinder, all using double-deck high-pressure inner cylinder structure, reduces cylinder leakage vapour, axial locating surface leakage vapour；
This utility model optimizes high intermediate pressure cylinder and enters vapour structure and governing stage vaporium molded line, optimizes exhaust steam end molded line, reduces
Flow losses；
Reduce mesolow and divide cylinder pressure, improve low pressure operation environment, improve low pressure (LP) cylinder efficiency；
High, intermediate pressure cylinder pressure stage and low pressure (LP) cylinder part stator blade adopts fabricated construction it is ensured that the accuracy of manufacture；
This utility model is adjusted to through-flow labyrinth clearance, using small-gap suture seal system packing；
Low pressure (LP) cylinder enters to strip height using 360 ° of spiral cases and enters vapour efficiency, optimizes low pressure steam discharge guide ring and reduces steam discharge loss；
Using one piece elbow form communicating tube structure, reduce pipeline crushing；
Novel casting low-pressure internal cylinder, tangential spiral case enters vapour, streamlined accessible enter vapour passage, self-seal type cylinder body construct skill
Art excellent it is ensured that good rigidity and sealing.
Brief description
Fig. 1 is the overall structure main view of the clammy condensing turbine of 350MW supercritical triplex two steam discharge of the present utility model
Figure.
Specific embodiment
Specific embodiment one：As shown in figure 1, the clammy condensing-type of 350MW supercritical triplex two steam discharge of present embodiment
Steam turbine includes front bearing box 1, high pressure cylinder 2, the first middle (center) bearing case 3, turbine shafting high pressure rotor 4, presses in turbine shafting
Rotor 5, intermediate pressure cylinder 6, the second middle (center) bearing case 7, low pressure (LP) cylinder 8, turbine shafting low pressure rotor 9 and rear bearing housing 10, front bearing box
1st, the first middle (center) bearing case 3, the second middle (center) bearing case 7 and rear bearing housing 10 are all arranged in frame using landing structure, and high pressure cylinder 2 leads to
Cross ram's horn to be supported on front bearing box 1 and the first middle (center) bearing case 3, intermediate pressure cylinder 6 is supported on the first middle (center) bearing case 3 by upper ram's horn
On the second middle (center) bearing case 7；Low pressure (LP) cylinder 8 is arranged in frame using landing structure；High pressure cylinder 2, intermediate pressure cylinder 6 and low pressure (LP) cylinder 8 edge
Length direction tandem setting successively, high pressure cylinder 2, intermediate pressure cylinder 6 and low pressure (LP) cylinder 8 are inside and outside double shell structure, and turbine shafting is high
Carried out even by rigid flange shaft coupling between pressure rotor 5 and turbine shafting low pressure rotor 9 in pressure rotor 4, turbine shafting
Connect, turbine shafting high pressure rotor 4 and turbine shafting low pressure rotor 9 are dual-support structure；The middle pressure rotor of intermediate pressure cylinder 6 sets
There is cooling system.
Stress distribution high, that intermediate pressure cylinder can improve cylinder using double shell structure, improves unit and load variations is fitted
Ying Xing, low pressure (LP) cylinder can reduce the thermal expansion amount of outer shell using double shell structure, and is conducive to the radial direction diffusion of steam discharge.Steam turbine
Each cylinder is both designed as horizontal flange structure, and upper and lower for cylinder half-connection is got up by high, intermediate pressure cylinder stud, and by outer
The ram's horn that cylinder upper half is stretched out is supported on the bearing of bearing housing, and low pressure (LP) cylinder utilizes " skirtboard " of outer shell lower half to be seated in foundation sole plate
On.
This utility model reduces mesolow and divides cylinder pressure, improves low pressure operation environment, improves low pressure (LP) cylinder efficiency；High, middle pressure
Cylinder pressure stage and low pressure (LP) cylinder part stator blade adopt fabricated construction it is ensured that the accuracy of manufacture；This utility model is to through-flow labyrinth clearance
It is adjusted, using small-gap suture seal system packing；Low pressure (LP) cylinder enters to strip height using 360 ° of spiral cases and enters vapour efficiency, optimizes low pressure row
Vapour guide ring reduces steam discharge loss；Using one piece elbow form communicating tube structure, reduce pipeline crushing；In novel casting low pressure
Cylinder, tangential spiral case enters vapour, streamlined accessible enter vapour passage, self-seal type cylinder body constructing technology excellent it is ensured that good rigidity
And sealing；
Present embodiment is high, intermediate pressure section designs a set of advanced little enthalpy drop reactionary style blade profile, and for subcritical
In the transformation of 300MW unit, unit through-flow high-pressure section series is made to get a promotion, and by the dividing plate of pressure stage by original weldering
Connect dividing plate and be changed to assembling diaphragm；The through-flow series of intermediate pressure section is made to get a promotion, middle pressure, all using assembled stator blade, is led to
Cross the through-flow optimization design to high pressure, so that the high intermediate pressure cylinder effect of unit is had and increase substantially, pass through to increase medium pressure grade simultaneously
Number, presses enthalpy drops at different levels, can reduce throttle (steam) temperature and the pressure of low pressure (LP) cylinder further, be that base is established in low pressure (LP) cylinder potentiation in reasonable distribution
Plinth；
In present embodiment pressure rotor be provided with cooling system, because the unit reheat temperature is to 566 DEG C, therefore rotor except
In structure optimization design and on material select 30Cr1Mo1V material outside, in order to improve rotor operation environment, devise middle pressure
The cooling steam system of rotor, is introduced into interlayer between IP inner casing and middle pressure rotor using steam after governing stage, to reduce rotor table
Face temperature, makes the safer reliability of rotor.
Present embodiment low pressure (LP) cylinder adopts 360 ° of scroll casing type low-pressure internal cylinders, can eliminate well respectively to connect and join portion set composition surface
Inside leakage losses, improve through-flow operational efficiency；Adopt self-seal type cylinder body constructing technology it is ensured that low-pressure internal cylinder is good simultaneously
Rigidity and sealing；Coordinate the design of new 360 ° of scroll casing type low-pressure internal cylinders, the 1st grade of dividing plate of low pressure adopts horizontal stator knot
Structure, can preferably combing low pressure admission flow field, actively play spiral case effect, make to be down to into vapour loss minimum.
Present embodiment is high, mesolow rotor is integral rotor, and mesolow rotor high temperature section, low-temperature zone adopt different
Heat treatment, makes two sections of before and after reach different mechanical performances, and the elevated temperature strength both having met high temperature section requires, and meets again
The high intensity of low-temperature zone and the performance of low brittle transition temperature value.
Specific embodiment two：As shown in figure 1, present embodiment high pressure cylinder 2 intermediate pressure cylinder 6 is single process cylinder pressure, low pressure
Cylinder 8 is double-flow cylinder pressure.It is so designed that, is so designed that active balance rotor axial thrust makes shafting global design more close
Reason.Other compositions and annexation are identical with specific embodiment one.
Specific embodiment three：As shown in figure 1, the main vapour of present embodiment high pressure adjusts union valve is arranged symmetrically in high pressure cylinder
2 both sides, the main vapour of high pressure is adjusted union valve and is connected using airway about 2 with high pressure cylinder respectively, and the main vapour of high pressure adjusts union valve
It is rigid support and basis between.It is so designed that, the cylinder flow-through format of so setting can improve the efficiency of each cylinder, can have again
Effect shortens unit axial dimension, controls final blade length and reduce rotor axial thrust.Other compositions and annexation and tool
Body embodiment one or two is identical.
Specific embodiment four：As shown in figure 1, the main vapour of present embodiment reheating adjusts union valve is arranged symmetrically in intermediate pressure cylinder
6 both sides, the main vapour of reheating is adjusted union valve and is connected using airway with intermediate pressure cylinder 6, and the main vapour of reheating adjusts union valve and basis
Between for resilient support.It is so designed that, the cylinder flow-through format of so setting can improve the efficiency of each cylinder, can effectively shorten machine again
Group axial dimension, control final blade length and reduction rotor axial thrust.Other compositions and annexation and specific embodiment party
Formula three is identical.
Specific embodiment five：As shown in figure 1, present embodiment high pressure cylinder 2, intermediate pressure cylinder 6 are horizontal flange structure,
The upper lower half of high pressure cylinder 2, the upper lower half of intermediate pressure cylinder 6 are all connected by stud.It is so designed that it is easy to process, convenient installation,
Maintenance.Other compositions and annexation and specific embodiment one, two or four are identical.
Specific embodiment six：As shown in figure 1, the lower half of present embodiment high pressure cylinder 2 and intermediate pressure cylinder 6 is provided with determining
Center sill, center beam and bearing housing axial restraint.It is so designed that it is easy to ensure cylinder along unit centre line axial expansion.Its
It forms and annexation is identical with specific embodiment five.
Claims (6)
1. a kind of clammy condensing turbine of 350MW supercritical triplex two steam discharge it is characterised in that：Described clammy condensing-type steamer
Machine includes front bearing box (1), high pressure cylinder (2), the first middle (center) bearing case (3), turbine shafting high pressure rotor (4), turbine shafting
Middle pressure rotor (5), intermediate pressure cylinder (6), the second middle (center) bearing case (7), low pressure (LP) cylinder (8), turbine shafting low pressure rotor (9) and rear bearing
Case (10), front bearing box (1), the first middle (center) bearing case (3), the second middle (center) bearing case (7) and rear bearing housing (10) are all using landing knot
Structure is arranged in frame, and high pressure cylinder (2) is supported on front bearing box (1) and the first middle (center) bearing case (3) by upper ram's horn, intermediate pressure cylinder
(6) it is supported on the first middle (center) bearing case (3) and the second middle (center) bearing case (7) by upper ram's horn；Low pressure (LP) cylinder (8) is pacified using landing structure
It is contained in frame；High pressure cylinder (2), intermediate pressure cylinder (6) and low pressure (LP) cylinder (8) along its length successively tandem setting, high pressure cylinder (2), in
Cylinder pressure (6) and low pressure (LP) cylinder (8) are inside and outside double shell structure, and in turbine shafting high pressure rotor (4), turbine shafting, pressure turns
It is attached by rigid flange shaft coupling between sub (5) and turbine shafting low pressure rotor (9), turbine shafting high pressure rotor
And turbine shafting low pressure rotor (9) is dual-support structure (4)；The middle pressure rotor of intermediate pressure cylinder (6) is provided with cooling system.
2. the clammy condensing turbine of 350MW supercritical triplex two steam discharge according to claim 1 it is characterised in that：High
Cylinder pressure (2) intermediate pressure cylinder (6) is single process cylinder pressure, and low pressure (LP) cylinder (8) is double-flow cylinder pressure.
3. the clammy condensing turbine of 350MW supercritical triplex two steam discharge according to claim 1 and 2 it is characterised in that：
The main vapour of high pressure adjusts union valve and is arranged symmetrically in the both sides of high pressure cylinder (2), the main vapour of high pressure adjust union valve respectively with high pressure cylinder (2)
Airway is adopted to connect up and down, it is rigid support that the main vapour of high pressure is adjusted between union valve and basis.
4. the clammy condensing turbine of 350MW supercritical triplex two steam discharge according to claim 3 it is characterised in that：Again
The main vapour of heat adjusts the both sides that union valve is arranged symmetrically in intermediate pressure cylinder (6), and the main vapour of reheating adjusts union valve and intermediate pressure cylinder (6) using leading
Trachea connects, and the main vapour of reheating is adjusted between union valve and basis as resilient support.
5. the clammy condensing turbine of 350MW supercritical triplex two steam discharge according to claim 1,2 or 4, its feature exists
In：High pressure cylinder (2), intermediate pressure cylinder (6) are horizontal flange structure, the upper lower half of high pressure cylinder (2), the upper lower half of intermediate pressure cylinder (6)
All connected by stud.
6. the clammy condensing turbine of 350MW supercritical triplex two steam discharge according to claim 5 it is characterised in that：High
The lower half of cylinder pressure (2) and intermediate pressure cylinder (6) is provided with the beam that centers, and center beam and bearing housing axial restraint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621027408.9U CN206000583U (en) | 2016-08-31 | 2016-08-31 | The clammy condensing turbine of 350MW supercritical triplex two steam discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621027408.9U CN206000583U (en) | 2016-08-31 | 2016-08-31 | The clammy condensing turbine of 350MW supercritical triplex two steam discharge |
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| Publication Number | Publication Date |
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| CN206000583U true CN206000583U (en) | 2017-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621027408.9U Active CN206000583U (en) | 2016-08-31 | 2016-08-31 | The clammy condensing turbine of 350MW supercritical triplex two steam discharge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653817A (en) * | 2018-12-25 | 2019-04-19 | 哈尔滨汽轮机厂有限责任公司 | A kind of 160MW grade axial exhaust extraction condensing type combination circulation steam turbine |
-
2016
- 2016-08-31 CN CN201621027408.9U patent/CN206000583U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653817A (en) * | 2018-12-25 | 2019-04-19 | 哈尔滨汽轮机厂有限责任公司 | A kind of 160MW grade axial exhaust extraction condensing type combination circulation steam turbine |
| CN109653817B (en) * | 2018-12-25 | 2023-12-01 | 哈尔滨汽轮机厂有限责任公司 | 160 MW-grade axial exhaust extraction condensing type combined cycle turbine |
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| C14 | Grant of patent or utility model | ||
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