CN104652863A - Method for open-air arrangement of main plant of fuel gas-steam combined-cycle power plant - Google Patents
Method for open-air arrangement of main plant of fuel gas-steam combined-cycle power plant Download PDFInfo
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- CN104652863A CN104652863A CN201510031698.8A CN201510031698A CN104652863A CN 104652863 A CN104652863 A CN 104652863A CN 201510031698 A CN201510031698 A CN 201510031698A CN 104652863 A CN104652863 A CN 104652863A
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- E—FIXED CONSTRUCTIONS
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- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
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Abstract
The invention relates to an open-air distributing structure of a main plant of a thermal power plant, in particular to a method for open-air arrangement of the main plant of a fuel gas-steam combined-cycle power plant. The method has the key points that the open-air arrangement is carried out by adopting cover shells by gas turbines and gas turbine generators in a gas turbine generator unit, other auxiliary devices adopt a container form to carry out concentrated open-air arrangement at one side, which is close to the corresponding gas turbine and gas turbine generator, of each of the other auxiliary devices, and a passage is reserved at the other side of each auxiliary device to be used for an overhauling crane to stop. According to the method disclosed by the invention, a steam turbine is in high-position arrangement, downward steam discharging is adopted, buildings above a running layer are removed by a steam turbine room, and a floor slab of the running layer is used as a top cover of the steam turbine room; a gantry crane or an automobile crane is adopted, thus the works of installing and civil engineering can be simultaneously carried out or can be orderly carried out in a crossing way, the construction period is shortened, building materials are saved, the construction cost is reduced, and the running cost of heating, ventilation and air conditioning is effectively reduced.
Description
Technical field
The present invention relates to the outdoor distributed structure of a kind of steam power station main building, particularly the outdoor method for arranging of a kind of Gas-steam Combined Cycle power plant main power house.
Background technology
Gas-steam Combined Cycle power plant compares conventional thermal power plant and has following several respects advantage: reliability reaches 96%, regulates maneuverability, and start and stop are rapid, and varying duty ability is strong; Construction period is short, run and maintenance cost low; Energy utilization rate is high, and generating efficiency can reach 55% ~ 58%; Therrmodynamic system is simple, and steam turbine building floor space is few; Effective discharge value reducing the pernicious gases such as SO2, NOX, can near load or city-building; Water consumption is few, generally only has about 1/3 of conventional thermal power plant.
Gas-steam Combined Cycle power plant main power house mainly comprises combustion engine room, steam turbine building and waste heat boiler room.Supply condition according to installed capacity, construction place natural conditions, fuel, bear the difference of load character and gas turbine, steam turbine and waste heat boiler pattern, there are single shaft and multiaxis two kinds of shaft arrangement in combined-cycle power plant, main building arrangement mode is various.
Be configured to example with multiaxis, prior art combined-cycle power plant main building layout plan is with reference to accompanying drawing 1, and combustion engine room and waste heat boiler profile are with reference to accompanying drawing 2, and steam turbine building profile is then with reference to accompanying drawing 3.Figure Middle combustion engine generating set low position, a steam turbine power generation unit high position is arranged, adopts lower steam discharge.Fuel engine power generation unit mainly comprises fuel engine power generation machine 1, combustion engine 2, exhaust diffuser 3, combustion engine case 6 and inlet duct 7; Chimney bypass 4, waste heat boiler 5 is arranged successively after exhaust diffuser 3; As shown in Figure 2, combustion engine 2, combustion engine case 6 and combustion engine supplementary module 10A, 10B, 10C all enclose contained by the combustion engine room 9 built, are also provided with bridge crane 8 for overhauling lifting in combustion engine room 9.Steam turbine power generation unit mainly comprises steam turbine power generation machine 11, steam turbine 12, steam turbine and generator case 13 and condenser 14, as shown in Figure 3, steam turbine building 16 has been built in the periphery of steam turbine power generation unit, and whole steam turbine building 16 includes 0 meter of bottom, 6.50 meters of intermediate layers, 13.00 meters of running layers and more than 13.00 meters structural constructions and roof; Condenser 14 is positioned over 0 meter of bottom position, and steam turbine 12 and steam turbine power generation machine 11 high position are positioned on running layer, and generator case 13 lid overlays on steam turbine 12 and steam turbine power generation machine 11; Bridge crane 15 is provided with, for overhauling lifting in steam turbine building 16.13.00 meters of running layers leave manhole C, D, E, F, G, H, in order to lift by crane auxiliary equipment in 0 meter of bottom and 6.50 meters of intermediate layers, usually lays steel grating, see accompanying drawing 1; Manhole J is in order to transport the large parts of steam turbine and auxiliary equipment that need maintenance to bottom space for maintenance, and I, K are the stair that intermediate layer leads to running layer.As shown in Figure 1, the outdoor layout of fuel engine power generation machine 1, the indoor layout of combustion engine 2, steam turbine power generation machine 11 and the indoor layout of steam turbine 12.In combustion engine room 9, supplementary module 10A, PPC power control center 10D and supplementary module 10B, 10C are arranged in combustion engine 2 not homonymy; Large of combustion engine maintenance placement area A, B and supplementary module 10B, 10C homonymy, leave towards the gate outside combustion engine room 9 near fuel engine power generation machine 1 side.
Because fuel engine power generation unit, steam turbine power generation unit are all arranged in combustion engine room and steam turbine building, therefore civil engineering engineering is comparatively large, and constructional materials consumption is more; Civil engineering and equipment are installed and are difficult to carry out simultaneously, can only carry out according to order, so the construction period is longer, along with building material price and freight go up, international market improves constantly construction quality requirement, requires more and more stricter to the construction period of combined-cycle power plant.Save constructional materials, improve construction quality, shorten the construction period, become the direction built combined-cycle power plant and make great efforts.
Summary of the invention
The object of the invention is to according to the deficiencies in the prior art part and provide one can effectively shorten the construction period, saving raw material, the outdoor method for arranging of Gas-steam Combined Cycle power plant main power house of reducining the construction costs.
The outdoor method for arranging of main building of the present invention is realized by following approach:
The outdoor method for arranging of Gas-steam Combined Cycle power plant main power house, its main points are, comprise the steps:
Combined-cycle power plant's main building comprises fuel engine power generation unit, steam turbine power generation unit and waste heat boiler room, and fuel engine power generation unit connects waste heat boiler;
Fuel engine power generation unit includes fuel engine power generation machine, combustion engine, combustion engine case and plural number cover combustion engine supplementary module, cancels the bridge crane in combustion engine room and combustion engine room, arranges automobile crane; Combustion engine case lid covers whole combustion engine, and plural number cover combustion engine supplementary module adjusts to the same side of combustion engine, and is set to container pattern; Automobile crane docks when another side of combustion engine overhauls as combustion engine, a side area of fuel engine power generation machine is adjusted in large of the combustion engine maintenance placement area of former combustion engine one side;
Steam turbine power generation unit includes steam turbine power generation machine, steam turbine, steam turbine building, steam turbine and generator case and condenser, cancels structural construction and the roof of more than original steam turbine building running layer, cancels the bridge crane in steam turbine building simultaneously; Steam turbine building is made up of bottom, intermediate layer and running layer thus, using the roofing of layer as steam turbine building that operate, the edge, the left and right sides of running layer is provided with crane runway, is provided with portal crane in orbit; Overlay on steam turbine and steam turbine power generation machine at running layer steam turbine and generator cover cap, centered by this steam turbine and generator case, the floor of running layer constructs to surrounding in gradually low gradient.
First, fuel engine power generation unit cancels combustion engine room, combustion engine and supplementary module thereof adopt the outdoor layout of container pattern, steam turbine power generation unit then cancels the structural construction of more than running layer, takes half outdoor mode to arrange, effectively reduces most civil engineering, not only substantially reduce the construction period, and saved constructional materials, reduce construction cost, can also effectively reduce and reduce the running cost of heating and ventilation and air conditioning further; Secondly, due to the restriction not having the main building frameworks such as combustion engine room to build, equipment is installed and construction work just can carry out simultaneously, or cross-operation in an orderly manner, substantially increases speed of application.Technical method of dealing with problems of the present invention is exactly that the capital equipment of combined-cycle power plant is carried out outdoor layout.Along with generating equipment manufacturing technology and the high development with distant place automatic control technology, necessary safeguard procedures are taked to existing generating equipment, just can adapt to the installation environment of outdoor layout.Outdoor layout answers emphasis to consider dust-proof, moistureproof, anticorrosion, antifreeze, noise requirement, and therefore good place natural environment is also the necessary condition of building combined cycle outdoor power plant.
The present invention can be specially further:
Fuel engine power generation unit includes PPC power control center, and it is adjusted to from a side region of fuel engine power generation machine and to overlap combustion engine supplementary module the same side with plural number, is positioned at the opposite side region of fuel engine power generation machine.
PPC power control center is adjusted to and each supplementary module the same side, be convenient to centralized Control operation; Such PPC power control center just with combustion engine large overhaul placement area and divide and be listed in fuel engine power generation machine both sides, combustion engine opens cylinder in overhaul, automobile crane can be directly to and reaches by combustion engine when hanging rotor; After combustion engine pedestal and supplementary module foundation construction, namely combustion engine installed by available automobile crane.
In steam turbine power generation unit, steam turbine and generator case can adopt following two schemes:
One is: steam turbine and generator case are overall merogenesis movable structure, and the case be namely positioned on steam turbine and generator is as a whole, and each part is flexibly connected mutually each other, is provided with door and window on case simultaneously.
This is a kind of structure of steam turbine and generator being carried out to integral protection, can keep good ventilation and heating, can also leave enough spaces to meet operation requirements.
Another kind is: steam turbine and generator case include steam turbine governor case, high and medium voltage cylinder case, bearing portions case, shaft coupling case, barring gear case and exciter case, separate between each case.
This is a kind of scheme of steam turbine major part being carried out to case protection, because steam turbine low pressure (LP) cylinder and engine block self also can meet outdoor arrangement requirement, therefore can not consider.But preferably the first scheme.
In steam turbine power generation unit, the running layer of steam turbine building has a plurality of manhole, the surrounding of each manhole is provided with retaining ring, the top of manhole is provided with removable formula rain cover of slinging simultaneously, the retaining ring of corresponding manhole covers in by this rain cover completely, adopt encapsulant to seal in rain cover inside with retaining ring periphery contact portion, rain cover top adopts transparent material.
Because manhole can reach intermediate layer downwards, therefore need to carry out rainproof treatment, in addition, rain cover top adopts transparent material can solve the daylighting problem of manhole.
In sum, the invention has the advantages that:
1, fuel engine power generation unit Middle combustion engine, fuel engine power generation machine adopt case to carry out outdoor layout, other auxiliary equipment adopt container pattern to carry out concentrated outdoor layout near gas turbine, gas turbine powered generator side, and opposite side reserves passage and stops use as maintenance crane.A steam turbine high position is arranged, adopts lower steam discharge.Steam turbine building is divided into running layer, intermediate layer and bottom, cancels running layer and builds above, using the roofing of layer as steam turbine building that operate.Cancellation combustion engine room building and steam turbine building running layer are built above, save constructional materials.Adopt portal crane or automobile crane, after combustion engine pedestal and supplementary module basis, the following civil engineering structure of steam turbine building running layer are constructed, namely available crane installs fuel engine power generation unit and turbine LP rotors, shortens the construction period.Outdoor layout effectively can reduce the operating cost of heating and ventilation and air conditioning simultaneously.
2, owing to there is no the restriction of main building framework, as long as by taking into full account and when establishment technique scheme, organiztion measure and production plan, consider comprehensively, unifiedly to arrange, installation and construction work just can carry out or cross-operation in an orderly manner simultaneously, substantially increase speed of application.
3, in service condition, the design of outdoor combined-cycle power plant, by making control operation element may concentrate according to device fabrication as far as possible, decreases operating scatter operation face, efficiency is improved constantly.Centralized operation face, contributes to the area and the volume that reduce operating room, for adopting more perfect heating and ventilation and air conditioning measure to create conditions, being conducive to making centralized control room be arranged in the region of on-site away from main building, reducing noise pollution.
Accompanying drawing explanation
Figure 1 shows that prior art combined-cycle power plant multiaxis main building layout plan described in background technology of the present invention;
Figure 2 shows that prior art combined-cycle power plant multiaxis combustion engine room and waste heat boiler profile described in background technology of the present invention;
Figure 3 shows that prior art combined-cycle power plant multiaxis steam turbine building profile described in background technology of the present invention;
Figure 4 shows that combined-cycle power plant's multiaxis main building layout plan described in the embodiment of the present invention;
Figure 5 shows that combined-cycle power plant's multiaxis combustion engine room described in the embodiment of the present invention and waste heat boiler profile;
Figure 6 shows that combined-cycle power plant's multiaxis steam turbine building profile described in the embodiment of the present invention.
Below in conjunction with accompanying drawing, the present invention is further elaborated.
Detailed description of the invention
Most preferred embodiment:
The outdoor method for arranging of Gas-steam Combined Cycle power plant main power house, comprises the steps:
Fig. 1 and Fig. 2 is contrasted with reference to accompanying drawing 4 and accompanying drawing 5(), fuel engine power generation unit includes fuel engine power generation machine 1, combustion engine 2, combustion engine case 6 and plural number cover combustion engine supplementary module 10A, 10B, 10C.Cancel combustion engine room 9, cancel combustion engine room bridge crane 8, automobile crane is set; Combustion engine 2 adopts combustion engine case 6 integral protection, and it is rainproof, dust-proof, sand prevention and bear the function such as wind, snow load and strengthened on the basis of indoor layout, thus fully meets the requirement of outdoor layout; Supplementary module 10A and PPC power control center 10D is adjusted to and 10B, 10C the same side, supplementary module 10B, 10C share a container, the independent container of supplementary module 10A, such PPC power control center 10D just with combustion engine large overhaul placement area A(or B) point be listed in fuel engine power generation machine both sides.
To reserve when L, M two regions are overhauled for combustion engine automobile crane to stop, such combustion engine opens cylinder in overhaul, automobile crane can be directly to that to reach combustion engine 2 other when hanging rotor; Large of combustion engine maintenance placement area A, B adjust to the position of original PPC power control center 10D; After combustion engine pedestal and supplementary module foundation construction, namely combustion engine installed by available automobile crane.
Accompanying drawing 1 and accompanying drawing 3 is contrasted) with reference to accompanying drawing 4 and accompanying drawing 6(, steam turbine power generation unit comprises steam turbine power generation machine 11, steam turbine 12, steam turbine and generator case 13 and condenser 14, cancel running layer to build above and roof 16, cancel steam turbine building bridge crane 15, steam turbine building is made up of bottom, intermediate layer and running layer thus, the floor plate that will operate as steam turbine building roofing, in order to rain and snow and draining, centered by case, the floor of running layer constructs to surrounding in gradually low gradient.Roofing surrounding arranges railing or parapet.Civil engineering structure construction to running layer after running layer the left and right sides along on lay crane runway 18, install portal crane 17, and can start steam turbine install.The ancillary service of steam turbine and steam turbine power generation machine, all the other auxiliary equipment and a large amount of steam-water pipe are arranged in bottom and intermediate layer, under the protection being in running floor plate; Steam turbine pedestal is through running floor plate place, and surrounding should have gutter and rain cover to leak down along steam turbine pedestal to prevent rainwater; Pipeline should arrange retaining ring through running floor plate holes place, and pipeline arranges rain cover equally.
Steam turbine, steam turbine generator body adopt steam turbine and generator case 13 to carry out outdoor protection, it is rainproof, dust-proof, sand prevention and bear the function such as wind, snow load and strengthened on the basis of indoor layout, according to natural conditions situation, case 13 can adopt two schemes.The first is that overall merogenesis is movable, carries out integral protection to steam turbine and generator, and is equipped with necessary door and window, keeps good ventilation and heating, leaves enough spaces and meet operation requirements.The second mainly to steam turbine governor, height (in) position such as air cylinder, bearing portions, shaft coupling, barring gear and exciter carries out case protection, independent between each case.Steam turbine low pressure (LP) cylinder and engine block self can meet outdoor arrangement requirement.
Maintenance hole.Running layer manhole C, D, E, F, G, H and J surrounding arranges retaining ring, it is arranged removable formula rain cover of slinging, retaining ring can cover by rain cover completely, encapsulant is adopted to seal in rain cover inside with retaining ring periphery contact portion, rain cover top adopts transparent material, as vitrified brick, solve daylighting problem; Adjustment intermediate layer, to running floor ladder I, K position, is avoided portal crane rail 18, is arranged rainproof room protect at stair top.
It is same as the prior art that the present invention does not state part.
Claims (5)
1. the outdoor method for arranging of Gas-steam Combined Cycle power plant main power house, is characterized in that, comprises the steps: that combined-cycle power plant's main building includes fuel engine power generation unit, steam turbine power generation unit and waste heat boiler, and fuel engine power generation unit connects waste heat boiler; Fuel engine power generation unit includes fuel engine power generation machine, combustion engine, combustion engine case and plural number cover combustion engine supplementary module, cancels the bridge crane in combustion engine room and combustion engine room, arranges automobile crane; Combustion engine case lid covers whole combustion engine, and plural number cover supplementary module adjusts to the same side of combustion engine, and is set to container pattern separately; Automobile crane docks when another side of combustion engine overhauls as combustion engine, a side area of fuel engine power generation machine is adjusted in large of the combustion engine maintenance placement area of former combustion engine one side;
Steam turbine power generation unit includes steam turbine power generation machine, steam turbine, steam turbine building, steam turbine and generator case and condenser, cancels building and the roof of more than original steam turbine building running layer, cancels the bridge crane in steam turbine building simultaneously; Steam turbine building is made up of bottom, intermediate layer and running layer thus, using the roofing of layer as steam turbine building that operate, the edge, the left and right sides of running layer is provided with crane runway, is provided with portal crane in orbit; Overlay on steam turbine and steam turbine power generation machine at running layer steam turbine and generator cover cap, centered by this steam turbine and generator case, the floor of running layer constructs to surrounding in gradually low gradient.
2. the outdoor method for arranging of Gas-steam Combined Cycle power plant main power house according to claim 1, it is characterized in that, combustion engine group includes PPC power control center, and it adjusts to opposite side region that overlap combustion engine supplementary module the same side with plural number, that be positioned at fuel engine power generation machine from a side region of fuel engine power generation machine.
3. the outdoor method for arranging of Gas-steam Combined Cycle power plant main power house according to claim 1, it is characterized in that, steam turbine and generator case are overall merogenesis movable structure, namely the case be positioned on steam turbine and steam turbine power generation machine is as a whole, each part is flexibly connected mutually each other, case is provided with door and window simultaneously.
4. the outdoor method for arranging of Gas-steam Combined Cycle power plant main power house according to claim 1, it is characterized in that, steam turbine and generator case include steam turbine governor case, high and medium voltage cylinder case, bearing portions case, shaft coupling case, barring gear case and exciter case, separate between each case.
5. the outdoor method for arranging of Gas-steam Combined Cycle power plant main power house according to claim 1, it is characterized in that, in steam turbine power generation unit, the running layer of steam turbine building has a plurality of manhole, the surrounding of each manhole is provided with retaining ring, the top of manhole is provided with removable formula rain cover of slinging simultaneously, the retaining ring of corresponding manhole covers in by this rain cover completely, adopt encapsulant to seal in rain cover inside with retaining ring periphery contact portion, rain cover top adopts transparent material.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105604357A (en) * | 2016-03-07 | 2016-05-25 | 中国能源建设集团广东省电力设计研究院有限公司 | Main power house layout structure of single-shaft gas-steam combined cycle units |
| CN105822098A (en) * | 2015-11-26 | 2016-08-03 | 中国能源建设集团浙江省电力设计院有限公司 | Power island arrangement structure of one-driving-one multi-shaft gas turbine extraction condensing backpressure unit combined cycle power plant |
| CN113353800A (en) * | 2021-04-30 | 2021-09-07 | 中国神华能源股份有限公司国华电力分公司 | Special device for high-position arrangement of No. 8 and No. 9 high pressure steam turbines in position |
| CN114251143A (en) * | 2022-01-24 | 2022-03-29 | 西门子能源有限公司 | Main plant layout structure of single-shaft gas and steam combined cycle generator set |
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| CN114251143A (en) * | 2022-01-24 | 2022-03-29 | 西门子能源有限公司 | Main plant layout structure of single-shaft gas and steam combined cycle generator set |
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Address after: 350003 Gulou District, Fujian, Fuzhou No. 54 Road, No. 268 Patentee after: China Electric Power Construction Group Fujian electric survey and Design Institute Co., Ltd. Address before: 350003 Gulou District, Fujian, Fuzhou No. 54 Road, No. 268 Patentee before: Fujian Electric Power Survey and Design Institute |
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