CN208380639U - A kind of resuperheat reaction turbine of subcritical 80MW grade - Google Patents
A kind of resuperheat reaction turbine of subcritical 80MW grade Download PDFInfo
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- CN208380639U CN208380639U CN201821140452.XU CN201821140452U CN208380639U CN 208380639 U CN208380639 U CN 208380639U CN 201821140452 U CN201821140452 U CN 201821140452U CN 208380639 U CN208380639 U CN 208380639U
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Abstract
A kind of resuperheat reaction turbine of subcritical 80MW grade, is related to a kind of steam turbine field of subcritical 80MW grade, solves the problems, such as that existing 80MW grade cylinder of steam turbine cycle efficieny is low.The high and low pressure side of the utility model high pressure cylinder is separately fixed on a side of front bearing box and middle (center) bearing case, and the high-voltage end of mesolow cylinder is fixed on another side of middle (center) bearing case, and the low-pressure end of mesolow cylinder is fixedly connected by vertical flange with exhaust casing；The fore bearing being socketed on one end of high pressure rotor in high pressure cylinder in front bearing box, and one end of high pressure rotor and fore bearing are rotatablely connected, the middle (center) bearing being socketed on the other end of high pressure rotor in middle (center) bearing case, and the other end of high pressure rotor and middle (center) bearing are rotatablely connected；The high-voltage end of mesolow rotor in mesolow cylinder is connected by the other end of shaft coupling and high pressure rotor；Rear bearing is rotatablely connected in the low-pressure end and rear bearing case of mesolow rotor.It is mainly used in for electrical domain.
Description
Technical field
The utility model relates to a kind of steam turbine fields of subcritical 80MW grade.
Background technique
The level steam turbines such as 80MW of China's active service molded design is early, mostly high temperature and pressure parameter, generally existing main vapour parameter
Low, system design and structure design the problems such as unreasonable, and unit cycle efficieny is low, net coal consumption rate is high, not only energy utilization rate
Low and discharge amount of pollution is big.
Utility model content
The utility model is to solve the problems, such as that existing 80MW grade cylinder of steam turbine cycle efficieny is low.The utility model
Provide a kind of resuperheat reaction turbine of subcritical 80MW grade.
A kind of resuperheat reaction turbine of subcritical 80MW grade, including front bearing box, high pressure cylinder, middle (center) bearing
Case, mesolow cylinder, rear bearing case and exhaust casing；
Front bearing box, middle (center) bearing case and rear bearing case are mounted on the rack；
The high and low pressure side of high pressure cylinder is separately fixed on a side of front bearing box and middle (center) bearing case, mesolow cylinder
High-voltage end is fixed on another side of middle (center) bearing case, and the low-pressure end of mesolow cylinder connects by the way that vertical flange and exhaust casing are fixed
It connects；
The fore bearing being socketed on one end of high pressure rotor in high pressure cylinder in front bearing box, and one end of high pressure rotor with
Fore bearing is rotatablely connected, the middle (center) bearing being socketed in middle (center) bearing case on the other end of high pressure rotor, and the other end of high pressure rotor
It is rotatablely connected with middle (center) bearing；
The high-voltage end of mesolow rotor in mesolow cylinder is connected by the other end of shaft coupling and high pressure rotor；
Rear bearing is rotatablely connected in the low-pressure end and rear bearing case of mesolow rotor.
Preferably, described a kind of resuperheat reaction turbine of subcritical 80MW grade, further includes high pressure
Main vapour adjusts union valve；
The main vapour of high pressure adjusts union valve and is fixed on high pressure cylinder, and the main vapour of high pressure adjusts gas outlet and the high pressure cylinder of union valve
Interior No. 1 spiral case connection, to realize high pressure cylinder full admission.
Preferably, described a kind of resuperheat reaction turbine of subcritical 80MW grade, further includes middle pressure
Reheating adjusts union valve；
Middle pressure reheating adjusts union valve and is fixed on mesolow cylinder, and the gas outlet that middle pressure reheating adjusts union valve is low in
No. 2 spiral cases connection in cylinder pressure, to realize mesolow cylinder full admission.
Preferably, whole stator blades of steam turbine high-pressure cylinder are assemblied on the high pressure inside wall of cylinder.
Preferably, the high-voltage end of high pressure cylinder on ram's horn and a side of front bearing box by being fixedly connected, high pressure cylinder
Low-pressure end by being fixedly connected on ram's horn and a side of middle (center) bearing case.
Preferably, the high-voltage end of mesolow cylinder is fixed on another side of middle (center) bearing case by ram's horn.
Preferably, mesolow cylinder is made of casting technique, and exhaust casing is made of steel plate butt welding.
Preferably, mesolow rotor is integral rotor.
Preferably, mesolow cylinder is integrated.
Preferably, high pressure cylinder is made of double shell structure.
The utility model bring beneficial effect is that a kind of subcritical 80MW grade described in the utility model is once intermediate
Reheating reaction turbine can be such that unit steam inlet condition improves to 16.7MPa, 566 DEG C, fundamentally improve cycle efficieny；
Unit high pressure cylinder divides cylinder to design with intermediate pressure cylinder, and high pressure flow length is not limited by bearing span, can achieve series
Optimal settings, obtain higher cylinder efficiency, cylinder efficiency can promote 5% or more；
Unit uses full admission, and valve is direct-connected with cylinder, and even spiral case has minimized into vapour loss for outlet, and keeps away
To exempt from more enthalpy drop and falls in inefficient impulse governing stage, these enthalpy drops are distributed on small enthalpy drop reactionary style pressure stage,
Higher stage efficiency can be obtained；
High pressure whole stator blade uses fabricated construction, and compared with traditional welding partition, fabricated construction does not have weld seam, avoids
Welding deformation better assures that through-flow precision；
Mesolow part is designed as cylinder combined structure, while high pressure rotor, mesolow rotor use 3 bearing support modes,
Under the premise of guaranteeing that unit has high circulation efficiency, high security, shorten unit length to greatest extent, reduces unit land occupation
Area saves space, reduces power plant construction cost.
Detailed description of the invention
Fig. 1 is a kind of vertical profile of a subcritical resuperheat reaction turbine of 80MW grade described in the utility model
Face structural schematic diagram；
Fig. 2 is a kind of three-dimensional of a subcritical resuperheat reaction turbine of 80MW grade described in the utility model
Structural schematic diagram；
Fig. 3 is the top view of Fig. 2.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are in the premise for not making creative work
Under all other embodiment obtained, fall within the protection scope of the utility model.
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, but not as the utility model
It limits.
Specific embodiment 1: illustrating that present embodiment, one kind described in present embodiment are subcritical referring to Fig. 1 to Fig. 3
Resuperheat reaction turbine of 80MW grade, including front bearing box 1, high pressure cylinder 2, middle (center) bearing case 3, mesolow cylinder 4, after
Bearing housing 5 and exhaust casing 6；
Front bearing box 1, middle (center) bearing case 3 and rear bearing case 5 are mounted on the rack；
The high and low pressure side of high pressure cylinder 2 is separately fixed on a side of front bearing box 1 and middle (center) bearing case 3, mesolow cylinder
4 high-voltage end is fixed on another side of middle (center) bearing case 3, and the low-pressure end of mesolow cylinder 4 passes through vertical flange and exhaust casing 6
It is fixedly connected；
The fore bearing 1-1 being socketed on one end of high pressure rotor 2-1 in high pressure cylinder 2 in front bearing box 1, and high pressure rotor
One end of 2-1 and fore bearing 1-1 are rotatablely connected, the middle (center) bearing 3- being socketed in middle (center) bearing case 3 on the other end of high pressure rotor 2-1
1, and the other end of high pressure rotor 2-1 and middle (center) bearing 3-1 are rotatablely connected；
The high-voltage end of mesolow rotor 4-1 in mesolow cylinder 4 is connected by the other end of shaft coupling and high pressure rotor 2-1
It connects；
Rear bearing 5-1 is rotatablely connected in the low-pressure end and rear bearing case 5 of mesolow rotor 4-1.
In present embodiment, mesolow cylinder 4 is integrated, and the intermediate pressure cylinder and low pressure (LP) cylinder of mesolow cylinder 4 pass through vertical flange
It is fixedly connected, high-voltage end of the high-voltage end of intermediate pressure cylinder as mesolow cylinder 4, the low-pressure end of low pressure (LP) cylinder is as the low of mesolow cylinder 4
Pressure side, unit high pressure cylinder 2 divide cylinder to design with mesolow cylinder, and high pressure flow length is not limited by bearing span, can achieve series
Optimal settings, obtain higher cylinder efficiency, in the prior art, mostly senior middle school's low pressure (LP) cylinder is integrated or high pressure cylinder and middle pressure
Cylinder is integrated, so that high pressure flow series is few, blade is short, steam turbine cycle low efficiency.
Mesolow part is designed as cylinder combined structure, while high pressure rotor 2-1, mesolow rotor 4-1 use 3 bearing supports
Mode shortens unit length under the premise of guaranteeing that unit has high circulation efficiency, high security to greatest extent, reduces machine
Group occupied area saves space, reduces power plant construction cost.
Specific embodiment 2: illustrating present embodiment, present embodiment and specific embodiment one referring to Fig. 1 to Fig. 3
A kind of difference of subcritical resuperheat reaction turbine of 80MW grade is, further includes that the main vapour of high pressure is adjusted
Union valve 7；
The main vapour of high pressure adjusts union valve 7 and is fixed on high pressure cylinder 2, and the main vapour of high pressure adjusts gas outlet and the height of union valve 7
No. 1 spiral case 2-2 connection in cylinder pressure 2, to realize 2 full admission of high pressure cylinder.
In present embodiment, unit uses full admission, and valve is direct-connected with cylinder, and even spiral case minimizes for outlet
It is lost into vapour, and avoids more enthalpy drop and fall in inefficient impulse governing stage, it is anti-that these enthalpy drops are distributed in small enthalpy drop
In mobile pressure grade, higher stage efficiency can be obtained.
Specific embodiment 3: illustrating present embodiment, present embodiment and specific embodiment one referring to Fig. 1 to Fig. 3
A kind of difference of subcritical resuperheat reaction turbine of 80MW grade is, further includes middle pressure thermal conditioning again
Union valve 8；
Middle pressure reheating adjusts union valve 8 and is fixed on mesolow cylinder 4, and middle pressure reheating adjust the gas outlet of union valve 8 with
No. 2 spiral case 4-2 connection in mesolow cylinder 4, to realize 4 full admission of mesolow cylinder.
Present embodiment, valve is direct-connected with cylinder, and even spiral case has minimized into vapour loss for outlet, can obtain more
High efficiency.
Specific embodiment 4: illustrating present embodiment, present embodiment and specific embodiment one referring to Fig. 1 to Fig. 3
A kind of difference of subcritical resuperheat reaction turbine of 80MW grade is, the whole of steam turbine high-pressure cylinder
Stator blade is assemblied on 2 inner wall of high pressure cylinder.
Present embodiment, high pressure whole stator blade use fabricated construction, and compared with traditional welding partition, fabricated construction does not have
There is weld seam, avoid welding deformation, better assure that through-flow precision, to improve cylinder efficiency.
Specific embodiment 5: illustrating present embodiment, present embodiment and specific embodiment one referring to Fig. 1 to Fig. 3
A kind of difference of subcritical resuperheat reaction turbine of 80MW grade is that the high-voltage end of high pressure cylinder 2 is logical
It crosses on ram's horn and a side of front bearing box 1 and is fixedly connected, the low-pressure end of high pressure cylinder 2 passes through ram's horn and the one of middle (center) bearing case 3
It is fixedly connected on a side.
In present embodiment, it is fastenedly connected high pressure cylinder 2 with front bearing box 1 and middle (center) bearing case 3 using ram's horn.
Specific embodiment 6: illustrating present embodiment, present embodiment and specific embodiment one referring to Fig. 1 to Fig. 3
A kind of difference of subcritical resuperheat reaction turbine of 80MW grade is, the high-voltage end of mesolow cylinder 4
It is fixed on another side of middle (center) bearing case 3 by ram's horn.
Present embodiment is fastenedly connected mesolow cylinder 4 with middle (center) bearing case 3 using ram's horn.
Specific embodiment 7: illustrating present embodiment, present embodiment and specific embodiment one referring to Fig. 1 to Fig. 3
A kind of difference of subcritical resuperheat reaction turbine of 80MW grade is that mesolow cylinder 4 is using casting
Technique is made, and exhaust casing 6 is made of steel plate butt welding.
Specific embodiment 8: illustrating present embodiment, present embodiment and specific embodiment one referring to Fig. 1 to Fig. 3
A kind of difference of subcritical resuperheat reaction turbine of 80MW grade is that mesolow rotor 4-1 is whole
Forge rotor.
In present embodiment, mesolow rotor 4-1 is integral rotor, and high temperature section, the low-temperature zone of integral rotor use bolt
Tightly, two sections of front and back has different mechanical performances, has not only met the elevated temperature strength requirement of high temperature section, but also meets low-temperature zone
The performance of high-intensitive and low brittle transition temperature value.
Specific embodiment 9: illustrating present embodiment, present embodiment and specific embodiment one referring to Fig. 1 to Fig. 3
A kind of difference of subcritical resuperheat reaction turbine of 80MW grade is that mesolow cylinder 4 is integrated.
Specific embodiment 10: illustrating present embodiment, present embodiment and specific embodiment one referring to Fig. 1 to Fig. 3
A kind of difference of subcritical resuperheat reaction turbine of 80MW grade is that high pressure cylinder 2 uses double shell cylinder
Structure is made.
In present embodiment, high pressure cylinder 2 is made of double shell structure, adapts to the high-temperature work environment feature of unit, is protected
It is small to demonstrate,prove good cylinder strength, good rigidity, thermal stress, the inside and outside cylinder of high pressure can be casting, high narrow flange arrangement can be used, to adapt to
The needs of unit quick start.
A kind of structure of a subcritical resuperheat reaction turbine of 80MW grade described in the utility model is not limited to
The specific structure documented by the respective embodiments described above can also be the reasonable of technical characteristic documented by the respective embodiments described above
Combination.
Claims (10)
1. a kind of resuperheat reaction turbine of subcritical 80MW grade, which is characterized in that including front bearing box (1),
High pressure cylinder (2), middle (center) bearing case (3), mesolow cylinder (4), rear bearing case (5) and exhaust casing (6)；
Front bearing box (1), middle (center) bearing case (3) and rear bearing case (5) are mounted on the rack；
The high and low pressure side of high pressure cylinder (2) is separately fixed on a side of front bearing box (1) and middle (center) bearing case (3), mesolow
The high-voltage end of cylinder (4) is fixed on another side of middle (center) bearing case (3), and the low-pressure end of mesolow cylinder (4) passes through vertical flange
It is fixedly connected with exhaust casing (6)；
The fore bearing (1-1) being socketed on one end of high pressure rotor (2-1) in high pressure cylinder (2) in front bearing box (1), and high pressure
One end of rotor (2-1) and fore bearing (1-1) are rotatablely connected, and are socketed with middle (center) bearing case (3) on the other end of high pressure rotor (2-1)
Interior middle (center) bearing (3-1), and the other end of high pressure rotor (2-1) and middle (center) bearing (3-1) are rotatablely connected；
The high-voltage end of mesolow rotor (4-1) in mesolow cylinder (4) is connected by the other end of shaft coupling and high pressure rotor (2-1)
It connects；
The low-pressure end and rear bearing case (5) interior rear bearing (5-1) of mesolow rotor (4-1) are rotatablely connected.
2. a kind of resuperheat reaction turbine of subcritical 80MW grade according to claim 1, feature exist
In further including that the main vapour of high pressure adjusts union valve (7)；
The main vapour of high pressure adjusts union valve (7) and is fixed on high pressure cylinder (2), and the main vapour of high pressure adjust the gas outlet of union valve (7) with
No. 1 spiral case (2-2) connection in high pressure cylinder (2), to realize high pressure cylinder (2) full admission.
3. a kind of resuperheat reaction turbine of subcritical 80MW grade according to claim 1, feature exist
In further including that middle pressure reheating adjusts union valve (8)；
Middle pressure reheating adjusts union valve (8) and is fixed on mesolow cylinder (4), and middle pressure reheating adjusts the gas outlet of union valve (8)
It is connected to No. 2 spiral cases (4-2) in mesolow cylinder (4), to realize mesolow cylinder (4) full admission.
4. a kind of resuperheat reaction turbine of subcritical 80MW grade according to claim 1, feature exist
In whole stator blades of steam turbine high-pressure cylinder are assemblied on high pressure cylinder (2) inner wall.
5. a kind of resuperheat reaction turbine of subcritical 80MW grade according to claim 1, feature exist
In the high-voltage end of high pressure cylinder (2) on ram's horn and a side of front bearing box (1) by being fixedly connected, the low pressure of high pressure cylinder (2)
End on ram's horn and a side of middle (center) bearing case (3) by being fixedly connected.
6. a kind of resuperheat reaction turbine of subcritical 80MW grade according to claim 1, feature exist
In the high-voltage end of mesolow cylinder (4) is fixed on another side of middle (center) bearing case (3) by ram's horn.
7. a kind of resuperheat reaction turbine of subcritical 80MW grade according to claim 1, feature exist
In mesolow cylinder (4) is made of casting technique, and exhaust casing (6) is made of steel plate butt welding.
8. a kind of resuperheat reaction turbine of subcritical 80MW grade according to claim 1, feature exist
In mesolow rotor (4-1) is integral rotor.
9. a kind of resuperheat reaction turbine of subcritical 80MW grade according to claim 1, feature exist
In mesolow cylinder (4) is integrated.
10. a kind of resuperheat reaction turbine of subcritical 80MW grade according to claim 1, feature exist
In high pressure cylinder (2) is made of double shell structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821140452.XU CN208380639U (en) | 2018-07-18 | 2018-07-18 | A kind of resuperheat reaction turbine of subcritical 80MW grade |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821140452.XU CN208380639U (en) | 2018-07-18 | 2018-07-18 | A kind of resuperheat reaction turbine of subcritical 80MW grade |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026216A (en) * | 2018-07-18 | 2018-12-18 | 哈尔滨汽轮机厂有限责任公司 | A kind of resuperheat reaction turbine of subcritical 80MW grade |
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2018
- 2018-07-18 CN CN201821140452.XU patent/CN208380639U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026216A (en) * | 2018-07-18 | 2018-12-18 | 哈尔滨汽轮机厂有限责任公司 | A kind of resuperheat reaction turbine of subcritical 80MW grade |
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