CN109653817B - 160 MW-grade axial exhaust extraction condensing type combined cycle turbine - Google Patents
160 MW-grade axial exhaust extraction condensing type combined cycle turbine Download PDFInfo
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- CN109653817B CN109653817B CN201811593528.9A CN201811593528A CN109653817B CN 109653817 B CN109653817 B CN 109653817B CN 201811593528 A CN201811593528 A CN 201811593528A CN 109653817 B CN109653817 B CN 109653817B
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- 238000000605 extraction Methods 0.000 title claims abstract description 39
- 238000005192 partition Methods 0.000 claims abstract description 11
- 244000161999 Acacia greggii Species 0.000 claims abstract description 10
- 235000004608 catclaw acacia Nutrition 0.000 claims abstract description 10
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- 238000000576 coating method Methods 0.000 claims abstract description 10
- 238000009833 condensation Methods 0.000 claims description 9
- 230000005494 condensation Effects 0.000 claims description 8
- 241001584775 Tunga penetrans Species 0.000 claims description 6
- 238000009423 ventilation Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 238000003303 reheating Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 239000010410 layer Substances 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000005242 forging Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 description 8
- 241000282326 Felis catus Species 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/30—Exhaust heads, chambers, or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D19/00—Starting of machines or engines; Regulating, controlling, or safety means in connection therewith
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
- F01D9/041—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector using blades
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
- F01D9/042—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector fixing blades to stators
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- 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
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
A160 MW-grade axial exhaust steam extraction condensing type combined cycle turbine relates to a combined cycle turbine. The invention solves the problems that the combined cycle steam turbine adopts a rotary partition plate or a cylinder valve, the occupied space is large, the shafting is overlong, the series arrangement is influenced, and the efficiency of the unit is low. The high-pressure cylinder is positioned between the front bearing box and the middle bearing box, the steam exhaust side cat claw of the high-pressure cylinder is supported on the front bearing box, the steam inlet side cat claw of the high-pressure cylinder is supported on the middle bearing box, the steam inlet side cat claw of the middle pressure cylinder is supported on the middle bearing box, seventeen stages of stator blade rings are arranged in the high-pressure cylinder, twenty-seven stages of movable blades are arranged on the high-pressure rotor, twenty-seven stages of assembled stator blades are arranged on the stator blade rings, a friction coating is sprayed at the movable blade tops of the stator blade rings, a friction coating is sprayed at the plate body of the stator blade, the front ten stages of the stator blade tops of the high-pressure rotor are sealed by adopting a brush steam seal, and the space between the high-pressure rotor and the stator blade bodies is sealed by adopting a rotor embedded steam seal sheet mode. The invention is used for 160 MW-grade axial exhaust extraction condensing steam turbines.
Description
Technical Field
The invention relates to a combined cycle turbine, in particular to a 160 MW-grade axial exhaust steam extraction condensing type combined cycle turbine.
Background
At present, most of domestic matched combined cycle turbines with one driven turbine are used for exhausting steam downwards, a basic operation platform needs to be built for more than ten meters, the steam extraction mode adopts a rotary partition plate or a cylinder valve mode, the space occupation of the steam extraction mode is large, the shaft system is overlong, the series arrangement is influenced, and the unit efficiency is low.
Disclosure of Invention
The invention aims to solve the problems that the existing combined cycle steam turbine adopts a rotary partition plate or a cylinder valve, occupies large space, has overlong shafting, influences series arrangement and has low unit efficiency, and further provides a 160 MW-level axial steam-exhaust extraction-condensation type combined cycle steam turbine.
The technical scheme adopted for solving the technical problems is as follows:
the 160MW grade axial exhaust steam extraction condensation type combined cycle steam turbine comprises a front bearing box 1, a high-pressure cylinder 2, a middle bearing box 3, a middle pressure cylinder 4 and a low-pressure cylinder 5, wherein a cylinder exhaust 6, a high-pressure main steam regulating combined valve 7, a reheating main steam regulating combined valve 8 and a jigger device 9, the bottom plates of the front bearing box 1, the middle bearing box 3 and the cylinder exhaust 6 are sequentially arranged on a base frame, the high-pressure cylinder 2 is of a double-layer cylinder structure, the high-pressure cylinder 2 is positioned between the front bearing box 1 and the middle bearing box 3, a steam exhaust side cat claw of the high-pressure cylinder 2 is supported on the front bearing box 1, a steam inlet side cat claw of the high-pressure cylinder 2 is supported on the middle bearing box 3, cat claws of the high-pressure cylinder and the middle pressure cylinder are both in an upper supporting form and a lower supporting form, seventeen-stage stator blade rings 10 are arranged in the high-pressure cylinder 2, twenty-seventeen-stage movable blades are arranged on a high-pressure rotor 11, twenty-seven-level assembled stationary blade 12 is arranged on a stationary blade ring 10, a friction coating is sprayed at the top of a movable blade of the stationary blade ring 10, a friction coating is sprayed at the plate body of the stationary blade 12, the top of the front ten-level blade of a high-pressure rotor 11 is sealed by a brush steam seal, a space between the high-pressure rotor 11 and the plate body of the stationary blade is sealed by adopting a rotor steam seal sheet mode, a medium-pressure cylinder 4 and a low-pressure cylinder 5 are internally provided with a medium-pressure rotor 13, the medium-pressure cylinder 4 is provided with twelve-level partition plates, the low-pressure cylinder 5 is provided with six-level partition plates, the high-pressure rotor 11 is arranged on a front bearing box 1, one end of the high-pressure rotor 11 is connected with a generator rotor, the other end of the high-pressure rotor 11 is connected with one end of the medium-pressure rotor 13, one end of the medium-pressure rotor 13 is arranged on the middle bearing box 3, the other end of the medium-pressure rotor 13 is arranged in a cylinder 6 and is connected with a jigger device 9, a high-pressure main steam adjusting joint valve 7 is communicated with the high-pressure cylinder in an upper path and a lower path through a steam guide pipe, the branch of the lower steam guide pipe is provided with a high-pressure steam guide pipe ventilation valve 14, and the two reheating main steam adjusting combined valves 8 are communicated with the medium-pressure cylinder through one steam guide pipe.
In one embodiment, the medium pressure cylinder 4 adopts a single-layer casting structure, the low pressure cylinder 5 and the exhaust cylinder 6 adopt steel plate splice welding structures, the medium pressure cylinder 4 and the low pressure cylinder 5 are connected through a vertical flange bolt, the low pressure cylinder 5 and the exhaust cylinder 6 are connected through a vertical flange bolt, and the medium pressure cylinder 4, the low pressure cylinder 5 and the exhaust cylinder 6 form an axial exhaust structure of the cylinder.
In one embodiment, the high pressure vanes within the high pressure cylinder 2 are each of a pre-twisted, assembled configuration.
In one embodiment, the high-pressure rotor, the medium-pressure rotor and the low-pressure rotor are all integral forging rotors, and the medium-pressure rotor and the low-pressure rotor of the medium-pressure rotor 13 are tightly fastened by bolts.
In one embodiment, the way of extracting steam on the steam exhaust pipeline of the high-pressure cylinder is adopted.
In one embodiment, a high-pressure steam guide pipe ventilation valve 14 is arranged on a lower steam guide pipe branch in an upper path and a lower path of the steam guide pipe, and the 160 MW-level axial steam discharge extraction condensation type combined cycle steam turbine adopts a medium pressure cylinder starting mode.
Compared with the prior art, the invention has the following beneficial effects:
according to the 160 MW-level axial exhaust extraction condensing combined cycle turbine, the high-pressure module and the medium-pressure module are designed in a split-cylinder mode, the high-pressure through-flow length is not limited by the bearing span, the optimal setting of the number of stages can be achieved, and higher cylinder efficiency is obtained;
the high-pressure stationary blades of the 160 MW-grade axial exhaust extraction condensation combined cycle steam turbine are all of an assembled structure, and compared with a welded partition plate, the assembled structure has no welding seam, avoids welding deformation, and better ensures the flow-through precision;
according to the 160 MW-level axial exhaust extraction condensing type combined cycle turbine high-pressure rotor, the steam seal sheets are embedded, the high-pressure stationary blade body is provided with the abradable coating, so that the radial clearance is reduced, and the unit efficiency is improved;
the 160 MW-grade axial exhaust steam extraction condensation type combined cycle turbine is designed to be of a combined cylinder structure, steam is axially exhausted, meanwhile, a high-pressure rotor and a medium-low pressure rotor adopt three bearing supporting modes, the length of a unit is shortened to the greatest extent on the premise that the unit has high circulation efficiency and high safety, the occupied area of the unit is reduced, the space is saved, and the construction cost of a power plant is reduced;
the 160 MW-level axial exhaust extraction condensation type combined cycle turbine adopts a steam extraction mode on a high-pressure cylinder exhaust pipeline to replace a steam extraction mode of a rotary partition plate or a cylinder seat valve, so that the space occupied by the inside of a cylinder is reduced, the number of levels is increased, and the efficiency of a unit is improved;
the 160 MW-grade axial exhaust extraction condensing combined cycle turbine adopts a medium pressure cylinder starting mode, and a ventilation valve is arranged on a high pressure steam guide pipe so as to meet the quick starting requirement of a combined cycle unit and save the starting time of the unit.
Drawings
FIG. 1 is a front view of a 160MW grade axial exhaust extraction condensing combined cycle turbine of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a front cross-sectional view of a 160MW grade axial exhaust extraction condensing combined cycle turbine of the present invention;
FIG. 4 is a schematic drawing of the extraction of 160MW grade axial-displacement extraction condensing combined cycle turbine of the present invention.
Detailed Description
The first embodiment is as follows: as shown in fig. 1 to 4, the 160 MW-class axial exhaust steam extraction and condensation combined cycle steam turbine of the present embodiment includes a front bearing housing 1, a high pressure cylinder 2, a middle bearing housing 3, a middle pressure cylinder 4, a low pressure cylinder 5, an exhaust cylinder 6, a high pressure main steam regulating combined valve 7, a reheat main steam regulating combined valve 8 and a jigger device 9, bottom plates of the front bearing housing 1, the middle bearing housing 3 and the exhaust cylinder 6 are sequentially mounted on a base frame, the high pressure cylinder 2 is of a double-layer cylinder structure, the high pressure cylinder 2 is located between the front bearing housing 1 and the middle bearing housing 3, exhaust side cat paws of the high pressure cylinder 2 are supported on the front bearing housing 1, intake side cat paws of the high pressure cylinder 2 are supported on the middle bearing housing 3, intake side cat paws of the middle pressure cylinder 4 are supported on the middle bearing housing 3, cat paws of the high and the middle pressure cylinder are both in an upper and lower support form, seventeen stage stationary blade rings 10 are mounted in the high pressure cylinder 2, twenty-seventeen stage moving blades are mounted on the high pressure rotor 11, twenty-seven-level assembled stationary blade 12 is arranged on a stationary blade ring 10, a friction coating is sprayed at the top of a movable blade of the stationary blade ring 10, a friction coating is sprayed at the plate body of the stationary blade 12, the top of the front ten-level blade of a high-pressure rotor 11 is sealed by a brush steam seal, a space between the high-pressure rotor 11 and the plate body of the stationary blade is sealed by adopting a rotor steam seal sheet mode, a medium-pressure cylinder 4 and a low-pressure cylinder 5 are internally provided with a medium-pressure rotor 13, the medium-pressure cylinder 4 is provided with twelve-level partition plates, the low-pressure cylinder 5 is provided with six-level partition plates, the high-pressure rotor 11 is arranged on a front bearing box 1, one end of the high-pressure rotor 11 is connected with a generator rotor, the other end of the high-pressure rotor 11 is connected with one end of the medium-pressure rotor 13, one end of the medium-pressure rotor 13 is arranged on the middle bearing box 3, the other end of the medium-pressure rotor 13 is arranged in a cylinder 6 and is connected with a jigger device 9, a high-pressure main steam adjusting joint valve 7 is communicated with the high-pressure cylinder in an upper path and a lower path through a steam guide pipe, the two reheating main steam adjusting combination valves 8 are communicated with the medium-pressure cylinder through a steam guide pipe.
The unit is an axial steam exhaust structure of a high-pressure cylinder and a middle-low pressure cylinder, and adopts a mode of starting the middle-pressure cylinder and extracting steam on a steam exhaust pipeline of the high-pressure cylinder.
The high-pressure rotor adopts the steam-embedded sealing piece, the high-pressure stationary blade body adopts the abradable coating, the radial clearance is reduced, and the unit efficiency is improved.
The unit shafting adopts a three-fulcrum supporting mode, the high-pressure rotor 11 is supported on a front supporting bearing and a middle supporting bearing, the low-pressure end of the middle-low pressure rotor 13 is supported on a rear supporting bearing, and the middle-pressure end and the high-pressure rotor are tightly fastened through a coupler bolt and then supported on the middle bearing.
During installation, the middle-low pressure rotor is supported on the middle bearing box at the middle pressure end through the dummy tiles, and the dummy tiles are removed after installation.
The main steam enters a high-pressure main steam regulating combined valve 7 and then enters a high-pressure cylinder through an upper path and a lower path of a steam guide pipe, and flows out of a steam exhaust pipeline at the lower part of the high-pressure outer cylinder after flowing through the high-pressure through flow; the reheated steam enters two reheating main steam regulating combined valves 8, then enters the medium-pressure cylinder through a steam guide pipe respectively, flows through the medium-low pressure through flow, and enters the condenser through the axial steam exhaust port of the air exhaust cylinder.
The second embodiment is as follows: as shown in fig. 1 and 3, in the present embodiment, the middle pressure cylinder 4 adopts a single-layer casting structure, the low pressure cylinder 5 and the exhaust cylinder 6 adopt a steel plate tailor-welded structure, the middle pressure cylinder 4 and the low pressure cylinder 5 are connected by a vertical flange bolt, the low pressure cylinder 5 and the exhaust cylinder 6 are connected by a vertical flange bolt, and the middle pressure cylinder 4, the low pressure cylinder 5 and the exhaust cylinder 6 form an axial exhaust structure of the cylinder.
By the design, the length of the unit is shortened to the greatest extent on the premise of ensuring that the unit has high circulation efficiency and high safety, the occupied area of the unit is reduced, the space is saved, and the construction cost of a power plant is reduced. Other components and connection relationships are the same as those of the first embodiment.
And a third specific embodiment: as shown in fig. 3, the high-pressure stator vanes in the high-pressure cylinder 2 of the present embodiment each have a pre-twisted assembly structure. By the design, the assembled structure has no welding seam, avoids welding deformation, and better ensures the through-flow precision. Other components and connection relationships are the same as those of the first or second embodiment.
The specific embodiment IV is as follows: as shown in fig. 1 and 3, the high-pressure rotor, the middle-pressure rotor and the low-pressure rotor in this embodiment are all integrally forged rotors, and the middle-pressure rotor and the low-pressure rotor of the middle-pressure rotor 13 are fastened by bolts. The design has different mechanical properties in the front section and the rear section, not only meets the high-temperature strength requirement of the high-temperature section, but also meets the properties of high strength and low brittleness transition temperature value of the low-temperature section. Other compositions and connection relationships are the same as those of the third embodiment.
Fifth embodiment: as shown in fig. 4, this embodiment adopts a steam extraction method on a high-pressure cylinder steam exhaust pipe. The industrial steam extraction device is designed in such a way that the industrial steam extraction device is arranged on a high-pressure steam exhaust pipeline, and the corresponding steam extraction valve is arranged on the steam extraction pipeline, so that the steam requirements of users can be met through the temperature and pressure regulating device. When the steam extraction quantity is large, the reheat main steam regulating valve is properly involved in regulation, and when the high exhaust temperature does not meet the steam extraction parameters, a stream of high-temperature steam can be led out from the hot reheat steam pipeline to be mixed with the high exhaust steam, so that the steam requirement required by a user is met. Other compositions and connection relationships are the same as those of the first, second or fourth embodiments.
Specific embodiment six: as shown in fig. 4, a high-pressure steam guide pipe ventilation valve 14 is arranged on a lower steam guide pipe branch in an upper path and a lower path of the steam guide pipe in the embodiment, and the 160 MW-class axial steam extraction and condensation combined cycle steam turbine adopts a medium pressure cylinder starting mode. By the design, the pneumatic ventilation valve is arranged on the high-pressure steam guide pipe so as to meet the quick starting requirement of the combined cycle unit and save the starting time of the unit. Other components and connection relationships are the same as those of the fifth embodiment.
Claims (6)
1. 160MW grade axial exhaust steam extraction congeals formula combined cycle steam turbine, 160MW grade axial exhaust steam extraction congeals formula combined cycle steam turbine includes preceding bearing box (1), high-pressure cylinder (2), well bearing box (3), well pressure cylinder (4), low pressure cylinder (5), and exhaust cylinder (6), high-pressure main steam regulation joint valve (7), reheat main steam regulation joint valve (8) and jigger device (9), and preceding bearing box (1), well bearing box (3) and the bottom plate of exhaust cylinder (6) are installed on the bed frame in proper order, its characterized in that: the high-pressure cylinder (2) is of a double-layer cylinder structure, the high-pressure cylinder (2) is positioned between the front bearing box (1) and the middle bearing box (3), steam exhaust side cat claws of the high-pressure cylinder (2) are supported on the front bearing box (1), steam inlet side cat claws of the high-pressure cylinder (2) are supported on the middle bearing box (3), steam inlet side cat claws of the middle-pressure cylinder (4) are supported on the middle bearing box (3), the cat claws of the high-pressure cylinder and the middle-pressure cylinder are in an upper supporting form and a lower supporting form, seventeen stages of stator blade rings (10) are arranged in the high-pressure cylinder (2), twenty-seven stages of movable blades are arranged on the high-pressure rotor (11), twenty-seven stages of assembled stator blade (12) are arranged on the stator blade rings (10), the movable blade top of the stationary blade ring (10) is sprayed with a friction coating, the plate body of the stationary blade (12) is sprayed with the friction coating, the front ten stages of blade tops of the high-pressure rotor (11) are sealed by adopting a brush steam seal, the space between the high-pressure rotor (11) and the stationary blade plate body is sealed by adopting a rotor steam seal piece mode, a middle-low pressure rotor (13) is arranged in the middle-pressure cylinder (4) and the low-pressure cylinder (5), the middle-pressure cylinder (4) is provided with twelve stages of partition boards, the low-pressure cylinder (5) is provided with six stages of partition boards, the high-pressure rotor (11) is arranged on the front bearing box (1), one end of the high-pressure rotor (11) is connected with a generator rotor, the other end of the high-pressure rotor (11) is connected with one end of the middle-low pressure rotor (13), one end of a medium-low pressure rotor (13) is arranged on the medium bearing box (3), the other end of the medium-low pressure rotor (13) is arranged in the air exhaust cylinder (6) and is connected with the jigger device (9), the high-pressure main steam adjusting combined valve (7) is communicated with the high-pressure cylinder by an upper path and a lower path of a steam guide pipe, and the two reheating main steam adjusting combined valves (8) are communicated with the medium-pressure cylinder by a steam guide pipe.
2. The 160 MW-rated axial exhaust, extraction and condensing combined cycle turbine of claim 1, wherein: the middle pressure cylinder (4) adopts a single-layer casting structure, the low pressure cylinder (5) and the air exhaust cylinder (6) adopt steel plate splice welding structures, the middle pressure cylinder (4) is connected with the low pressure cylinder (5) through a vertical flange bolt, the low pressure cylinder (5) and the air exhaust cylinder (6) are connected through a vertical flange bolt, and the middle pressure cylinder (4), the low pressure cylinder (5) and the air exhaust cylinder (6) form an axial air exhaust structure of the combined cylinder.
3. The 160 MW-rated axial exhaust steam extraction and condensing combined cycle turbine of claim 1 or 2, wherein: the high-pressure stationary blades in the high-pressure cylinder (2) are all in a pre-torsion assembly type structure.
4. A 160 MW-grade axial exhaust steam extraction condensing combined cycle turbine according to claim 3, wherein: the high-pressure rotor, the medium-pressure rotor and the low-pressure rotor are all integral forging rotors, and the medium-pressure rotor and the low-pressure rotor of the medium-pressure rotor (13) are tightly clamped by bolts.
5. The 160 MW-rated axial exhaust steam extraction and condensing combined cycle turbine of claim 1, 2, or 4, wherein: adopts a steam extraction mode on a steam exhaust pipeline of the high-pressure cylinder.
6. The 160 MW-rated axial exhaust, extraction and condensing combined cycle turbine of claim 5, wherein: the lower steam guide pipe branch in the upper and lower paths of the steam guide pipe is provided with a high-pressure steam guide pipe ventilation valve (14), and the 160 MW-level axial steam discharge extraction condensation type combined cycle steam turbine adopts a medium-pressure cylinder starting mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811593528.9A CN109653817B (en) | 2018-12-25 | 2018-12-25 | 160 MW-grade axial exhaust extraction condensing type combined cycle turbine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811593528.9A CN109653817B (en) | 2018-12-25 | 2018-12-25 | 160 MW-grade axial exhaust extraction condensing type combined cycle turbine |
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| CN109653817A CN109653817A (en) | 2019-04-19 |
| CN109653817B true CN109653817B (en) | 2023-12-01 |
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| CN111911244B (en) * | 2020-06-29 | 2022-01-18 | 东方电气集团东方汽轮机有限公司 | Multi-cylinder air turbine unit |
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| CN103670550A (en) * | 2013-12-11 | 2014-03-26 | 东方电气集团东方汽轮机有限公司 | Ultra-supercritical secondary re-heating steam turbine set |
| CN103925011A (en) * | 2014-04-17 | 2014-07-16 | 哈尔滨汽轮机厂有限责任公司 | 9F-level double-pumping axial steam exhausting turbine |
| CN206000583U (en) * | 2016-08-31 | 2017-03-08 | 哈尔滨汽轮机厂有限责任公司 | The clammy condensing turbine of 350MW supercritical triplex two steam discharge |
| CN207420639U (en) * | 2017-11-21 | 2018-05-29 | 哈尔滨汽轮机厂有限责任公司 | A kind of level steam turbines such as ultra super critical air cooling N+1 supports 1000MW |
| CN207420645U (en) * | 2017-11-24 | 2018-05-29 | 哈尔滨汽轮机厂有限责任公司 | A kind of two cylinder extraction condensing type combined heat and power turbine cycles |
| CN108397247A (en) * | 2018-04-09 | 2018-08-14 | 江苏金通灵流体机械科技股份有限公司 | A kind of coaxial resuperheat axial exhaust type steam turbine of ready-package high speed |
| CN108979761A (en) * | 2018-07-24 | 2018-12-11 | 哈尔滨汽轮机厂有限责任公司 | A kind of large capacity combination circulation steam turbine |
| CN209398466U (en) * | 2018-12-25 | 2019-09-17 | 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 |
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