CN203347858U - Gas-steam combined cycle system - Google Patents
Gas-steam combined cycle system Download PDFInfo
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- CN203347858U CN203347858U CN201320451659XU CN201320451659U CN203347858U CN 203347858 U CN203347858 U CN 203347858U CN 201320451659X U CN201320451659X U CN 201320451659XU CN 201320451659 U CN201320451659 U CN 201320451659U CN 203347858 U CN203347858 U CN 203347858U
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- gas turbine
- turbine
- steam
- heat boiler
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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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Abstract
The utility model discloses a gas-steam combined cycle system, which comprises gas turbines and a steam turbine, wherein the gas turbines and the steam turbine are arranged on the same operating platform, the gas turbines adopt an operation mode of bottom air inlet and axial exhaust, the gas turbines at least comprise a first gas turbine and a second gas turbine which are in parallel arrangement, and the steam turbine is arranged between the first gas turbine and the second gas turbine. Through arranging the gas turbines and the steam turbine on the same operating platform, the operation and the maintenance of the system are convenient, the layout is attractive, the applicability of production run is fully met, the floor area is small, and the extension of a factory building is facilitated.
Description
Technical field
The utility model relates to the thermoelectricity field, specifically, relates to a kind of gas-steam combined cycle system.
Background technique
In the thermoelectricity field, gas-steam combined cycle system, the clear superiority such as high with its power supply efficiency, that the operation start and stop are fast, the construction period is short, take up an area less, environmental pollution is minimum, replacing coal heating unit, become the development trend of present developed country.
Gas-steam Combined Cycle is the device of gas turbine and these two kinds of gangs of the heat engine by different thermodynamic cycle work of steam turbine, sometimes also referred to as combined cycle.The Gas-steam Combined Cycle generator set is to utilize high-temperature fuel gas and steam to do work for working medium expands, thereby drive the generator generating, gas turbine and steam turbine can be with separately generator, also can drive together same generator, different driving mode has just formed to combine follows the multi-form of not generator unit shaft system configuration.Press shaft system arrangement, combined cycle generating unit can be divided into single shaft and multiaxis combined cycle.
So-called combined cycle generating unit mainly comprises the equipment such as gas turbine, exhaust heat boiler and steam turbine.Wherein, the single shaft combined cycle generating unit is comprised of 1 gas turbine, 1 steam turbine, 1 exhaust heat boiler and 1 generator, and gas turbine and steam turbine coaxial (or connecting by speed change gear) drive generator work.The multiaxis combined cycle generating unit refers to that gas turbine and steam turbine drive respectively the combined cycle of generator separately, can be " two drag one ", " three drag one ", " four drag one " etc.
Conventional multiaxis configuration gas-steam combined cycle system, gas turbine and steam turbine are arranged on different running platforms, in some situations, even gas turbine and steam turbine are arranged in to two adjacent factory buildings, this arrangement, operation, maintenance inconvenience, when maintenance, gas turbine and steam turbine need to arrange respectively driving, can not meet the applicability of production run.
The model utility content
The utility model provides a kind of gas-steam combined cycle system, solved the traditional arrangement mode be unfavorable for operation, poor for applicability, safeguard inconvenient problem.
For solving the problems of the technologies described above, the utility model provides following technological scheme:
A kind of gas-steam combined cycle system, comprise gas turbine and steam turbine, wherein, described gas turbine and steam turbine are arranged at same running platform, adopt the method for operation of air intake, axial exhaust under described gas turbine, wherein, described gas turbine comprises parallel the first gas turbine and the second gas turbine of arranging; Described steam turbine is arranged between described the first gas turbine and the second gas turbine.
Preferably, described turbine shaft is to being vertically installed between described the first gas turbine, the second gas turbine.
Further, on described same running platform, also be provided with heat exchangers for district heating, described heat exchangers for district heating is connected with described steam turbine.
Further, described the first gas turbine, the second gas turbine are " F " level gas turbine.
Further, described the first gas turbine connects the first exhaust heat boiler, and described the second gas turbine connects the second exhaust heat boiler; Described the first exhaust heat boiler also is connected with described steam turbine with described the second exhaust heat boiler, to it, to input high-temperature steam.
Further, the bottom that is positioned at the inlet end of described the first gas turbine is provided with intake duct; The air outlet flue of described the first gas turbine is connected to the exhaust end of described the first gas turbine, and the other end of the air outlet flue of described the first gas turbine is connected with described the first exhaust heat boiler;
The bottom that is positioned at the inlet end of described the second gas turbine is provided with intake duct; The air outlet flue of described the second gas turbine is connected to the exhaust end of described the second gas turbine, and the other end of the air outlet flue of described the second gas turbine is connected with described the second exhaust heat boiler;
The inlet flue duct of described the first exhaust heat boiler is connected with the air outlet flue of described the first gas turbine, and the steam line of described the first exhaust heat boiler is connected with described steam turbine;
The inlet flue duct of described the second exhaust heat boiler is connected with the air outlet flue of described the second gas turbine, and the steam line of described the second exhaust heat boiler is connected with described steam turbine.
Further, described the first exhaust heat boiler, the second exhaust heat boiler are not arranged on described same running platform.
Further, described steam turbine is connected with described the first exhaust heat boiler, the second exhaust heat boiler by thermodynamic system, and the intermediate pressure cylinder blow-off line of described steam turbine is connected with described heat exchangers for district heating.
Further, described heat exchangers for district heating is connected with the intermediate pressure cylinder blow-off line of described steam turbine by extraction line.
Specifically, the running platform that technique scheme relates to is specially: the horizontal plane that reaches preset height apart from ground.
The gas-steam combined cycle system that the utility model provides has following advantage and effect:
1, by gas turbine and steam turbine are arranged on same running platform, make the characteristics of compact layout between gas turbine, steam turbine and exhaust heat boiler, facilitate the operation and maintenance of equipment.When maintenance, gas turbine and steam turbine can share driving, have fully met the applicability of production run.
2, floor space is little, facilitates the enlarging of factory building.
The accompanying drawing explanation
The layout schematic diagram of the partial devices that Fig. 1 is the utility model embodiment one;
The layout schematic diagram of the partial devices that Fig. 2 is the another kind of mode of execution of the utility model;
Fig. 3 is the described gas turbine of the utility model embodiment and exhaust heat boiler connection diagram; This schematic diagram is plan view;
Fig. 4 is the described steam turbine schematic top plan view of the utility model embodiment;
The side view that Fig. 5 is the described gas-steam combined cycle system of the utility model embodiment, there is shown the driving place approximate spatial locations.
In above-mentioned accompanying drawing, identical reference character is indicated identical part.It should be noted that, the schematic diagram that the application provides is example, and it should not limit the scope of the utility model protection at this, also deliberately by actual size equal proportion convergent-divergent, does not draw accompanying drawing simultaneously, focuses on illustrating purport of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, but not as to restriction of the present utility model.Embodiment based in the utility model, those of ordinary skills are not making under the creative work prerequisite the every other embodiment who obtains, and all belong to the scope of the utility model protection.
The gas-steam combined cycle system of the multiaxis configuration that the utility model is related is that gas turbine, steam turbine are equipped with respectively generator, and gas turbine and steam turbine can form axle system separately.The gas-steam combined cycle system of describing in following examples is when being applied to generator set, except above-mentioned gas turbine, exhaust heat boiler and steam turbine, also need to comprise necessary generator, electrical equipment, control apparatus and auxiliary facility, this necessaries or auxiliary facility are prior art, as those skilled in the art, can select voluntarily according to need of production.
Referring to Fig. 1, the layout schematic diagram of the gas-steam combined cycle system provided for the utility model embodiment.
A kind of gas-steam combined cycle system comprises gas turbine, steam turbine and exhaust heat boiler, and the gas turbine provided in the present embodiment is lower air intake, the method for operation of axial exhaust.Specifically, gas turbine comprises 2, and the first gas turbine 10 that axial parallel is arranged and the second gas turbine 11 form, and this first gas turbine, the second gas turbine can be the gas turbine of the random capacity of need of production, for example can, for " F " level gas turbine, this not limited.Further, 1 steam turbine 30 is arranged between the first gas turbine 10, the second gas turbine 11, take up an area space in order to save, in the present embodiment, preferably turbine shaft is to vertically being laid between two gas turbines, and the concrete type of this steam turbine 30 can be selected according to need of production; Correspondingly, identical with the quantity of gas turbine, exhaust heat boiler also comprises 2, and the first gas turbine 10 is connected with the first exhaust heat boiler 20, and the second gas turbine 11 is connected with the second exhaust heat boiler 21.As core of the present invention, above-mentioned the first gas turbine 10, the second gas turbine 11 and steam turbine 30 are arranged on same running platform jointly.From effect, gas turbine and steam turbine are arranged on same running platform, make the structure of whole system more compact, not only floor space is little, and in when maintenance, 2 gas turbines and between steam turbine can share 1 driving, be very easy to the operation and maintenance of equipment.
It should be noted that, the running platform refers to when arranging factory building, setting reach the running horizontal plane of preset height apart from ground.Concrete running platform, apart from the height on ground, can be arranged according to need of production, and the utility model does not impose any restrictions this.
In addition, angle case due to the schematic diagram of the present embodiment, do not indicate the Placement of the first gas turbine, the second gas turbine, the first exhaust heat boiler, the second exhaust heat boiler and steam turbine in diagram, can adopt any one suitable and feasible mode in prior art, the utility model is not limited in any way this.For more clearly explanation, hereinafter also will be explained the part Placement.
Illustrate the installing space of the above-mentioned circulatory system: main building adopts steel structure again, 140.0 meters of length, and span is 44.0 meters, and main building is divided into three layers, and top is the running layer, and absolute altitude is 13 meters, the mesosphere absolute altitude is 6.5 meters.As previously mentioned, gas-steam combined cycle system adopts " two drag one " multiaxis arrangement, the i.e. arranged in form form of two gas turbines and exhaust heat boiler and a steam turbine, two gas turbines are " F " level gas turbine, gas turbine and steam turbine and necessary control apparatus are arranged in 13 meters running layers, such as MCR Master Control Room, other supplementary equipment need to optionally be arranged in other running layers according to production run.Because MCR Master Control Room is positioned at 13 meters platforms, it is convenient when the unit in system is carried out to tours of inspection, during maintenance, also can drive a vehicle shared, and do not arrange other any supplementary equipment on 13 meters platforms, broad view, beautiful shape, when carrying out Disintegration overhaul to gas turbine, steam turbine, can pile up the solution body component, the efficiency of the maintenance of raising according to the maintenance layout plan.
In addition, when carrying out the enlargement of the factory buildings, due to without to operations such as equipment are moved, reduce engineering work load, greatly reduced cost, and, after carrying out the enlargement of the factory buildings, to a series of gas turbines, steam-turbine unit equipment after enlarging, can share driving.
Be illustrated in figure 2 the layout schematic diagram of the another kind of mode of execution of the gas-steam combined cycle system that the utility model embodiment provides.
On the basis of above-described embodiment one, this circulatory system has been set up heat exchangers for district heating 40, this heat exchangers for district heating 40 is conventional equipment of the prior art, can many be used in combination, and each heat exchangers for district heating 40 has included steam inlet, hot net water import and hot net water outlet.As a kind of preferred implementation, heat exchangers for district heating 40 and the first gas turbine 10, the second gas turbine 11 and steam turbine 30 are arranged on same running platform jointly.
Further, in the circulatory system in above-mentioned two embodiments, the structure of the first gas turbine and the second gas turbine can be identical gas turbine, the Placement of the first gas turbine and the first exhaust heat boiler, basic identical with the Placement of the second gas turbine and the second exhaust heat boiler, below only take the first gas turbine and the first exhaust heat boiler is described as example, and for structure and the annexation of the second gas turbine and the second exhaust heat boiler, the utility model repeats no more.
As shown in Figure 3, the bottom of the first gas turbine 10 (bottom) is inlet end, further connects intake duct.The air outlet flue 110 of the first gas turbine 10 is connected to the exhaust end of gas turbine 10, and the other end of described air outlet flue 110 is connected with exhaust heat boiler 20.
The first exhaust heat boiler 20 adopts flange to be connected by flue with the air outlet flue 110 of described the first gas turbine 10, the steam line 210 of described the first exhaust heat boiler 20 is connected with steam turbine, when production run, by flue, the high-temperature exhaust air of described the first gas turbine 10 is introduced to described the first exhaust heat boiler 20, thereby the generation high-temperature steam, and by steam line 210 input steam turbine.The technology that the Placement of the air outlet flue of concrete gas turbine and the flue of exhaust heat boiler is well known to those skilled in the art, the utility model repeats no more this.
Further preferably, consult again Fig. 4, steam turbine 30 is connected with the second exhaust heat boiler with the first exhaust heat boiler by thermodynamic system 310, the intermediate pressure cylinder blow-off line 320 of steam turbine 30 is connected with aforesaid heat exchangers for district heating, in this diagram, do not indicate the intermediate pressure cylinder of steam turbine, this intermediate pressure cylinder also further is connected with low pressure (LP) cylinder 330.In view of working principle and the working procedure of steam turbine is the known technology of relevant technical staff in the field, this is repeated no more.In conjunction with this figure, above-mentioned heat exchangers for district heating 40 is connected with the intermediate pressure cylinder air outlet flue 320 of described steam turbine by extraction line.
Fig. 5 shows the first gas turbine 10, the first exhaust heat boiler 20 be connected with the first gas turbine 10, and connect the first combustion turbine exhaustion road 110 of the first gas turbine 10 and described the first exhaust heat boiler 20, be positioned at contact with the platform that the turns round intake duct 120 of a side of the first gas turbine 10.
Problem due to the diagram angle, other units such as the second gas turbine in gas-steam combined cycle system, the second exhaust heat boiler, steam turbine can't illustrate, but, in other embodiments that provide at the utility model, structure and the annexation of described the second gas turbine, described the second exhaust heat boiler, steam turbine and other units be have been described in detail.As can be seen from the figure, because the first gas turbine, the second gas turbine and steam turbine are arranged on same running platform jointly, so to gas turbine, steam turbine or other equipment (such as heat exchangers for district heating) while being overhauled, can use same driving 50 to carry out, without being equipped with separately driving.
It should be noted that and the foregoing is only preferred embodiment of the present utility model, not thereby limit scope of patent protection of the present utility model, the utility model can also carry out equivalent improvement to the structure of above-mentioned various component.Therefore the equivalent structure that all utilizations specification of the present utility model and diagramatic content are done changes, or directly or indirectly apply to other correlative technology fields and all in like manner all be included in the scope that the utility model contains.
Claims (10)
1. a gas-steam combined cycle system, comprise gas turbine and steam turbine, it is characterized in that, described gas turbine and steam turbine are arranged at same running platform, adopt the method for operation of air intake, axial exhaust under described gas turbine, wherein, described gas turbine at least comprises parallel the first gas turbine and the second gas turbine of arranging; Described steam turbine is arranged between described the first gas turbine and the second gas turbine.
2. the system as claimed in claim 1, is characterized in that, described turbine shaft is to being vertically installed between described the first gas turbine, the second gas turbine.
3. system as claimed in claim 1 or 2, is characterized in that, on described same running platform, also is provided with heat exchangers for district heating, and described heat exchangers for district heating is connected with described steam turbine.
4. system as claimed in claim 3, is characterized in that, described the first gas turbine, the second gas turbine are " F " level gas turbine.
5. system as claimed in claim 3, is characterized in that, described the first gas turbine connects the first exhaust heat boiler, and described the second gas turbine connects the second exhaust heat boiler; Described the first exhaust heat boiler also is connected with described steam turbine with described the second exhaust heat boiler, to it, to input high-temperature steam.
6. system as claimed in claim 5, is characterized in that, the bottom that is positioned at the inlet end of described the first gas turbine is provided with intake duct; The air outlet flue of described the first gas turbine is connected to the exhaust end of described the first gas turbine, and the other end of the air outlet flue of described the first gas turbine is connected with described the first exhaust heat boiler;
The bottom that is positioned at the inlet end of described the second gas turbine is provided with intake duct; The air outlet flue of described the second gas turbine is connected to the exhaust end of described the second gas turbine, and the other end of the air outlet flue of described the second gas turbine is connected with described the second exhaust heat boiler;
The inlet flue duct of described the first exhaust heat boiler is connected with the air outlet flue of described the first gas turbine, and the steam line of described the first exhaust heat boiler is connected with described steam turbine;
The inlet flue duct of described the second exhaust heat boiler is connected with the air outlet flue of described the second gas turbine, and the steam line of described the second exhaust heat boiler is connected with described steam turbine.
7. system as claimed in claim 6, is characterized in that, described the first exhaust heat boiler, the second exhaust heat boiler are not arranged on described same running platform.
8. system as claimed in claim 7, is characterized in that, described steam turbine is connected with described the first exhaust heat boiler, the second exhaust heat boiler by thermodynamic system, and the intermediate pressure cylinder blow-off line of described steam turbine is connected with described heat exchangers for district heating.
9. system as claimed in claim 8, is characterized in that, described heat exchangers for district heating is connected with the intermediate pressure cylinder blow-off line of described steam turbine by extraction line.
10. the system as claimed in claim 1, is characterized in that, described running platform is: the horizontal plane that reaches preset height apart from ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320451659XU CN203347858U (en) | 2013-07-26 | 2013-07-26 | Gas-steam combined cycle system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320451659XU CN203347858U (en) | 2013-07-26 | 2013-07-26 | Gas-steam combined cycle system |
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| CN203347858U true CN203347858U (en) | 2013-12-18 |
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| CN201320451659XU Expired - Lifetime CN203347858U (en) | 2013-07-26 | 2013-07-26 | Gas-steam combined cycle system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790659A (en) * | 2013-08-08 | 2014-05-14 | 华能国际电力股份有限公司 | Gas-steam combined cycle cogeneration unit |
| CN104654268A (en) * | 2015-02-15 | 2015-05-27 | 华北电力科学研究院有限责任公司 | Gas thermal power plant two-driving-one unit auxiliary steam system and on-off control method thereof |
| CN106523048A (en) * | 2016-12-30 | 2017-03-22 | 中国能源建设集团广东省电力设计研究院有限公司 | Main building arrangement structure of gas-steam combined cycle power generation plant |
-
2013
- 2013-07-26 CN CN201320451659XU patent/CN203347858U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790659A (en) * | 2013-08-08 | 2014-05-14 | 华能国际电力股份有限公司 | Gas-steam combined cycle cogeneration unit |
| CN104654268A (en) * | 2015-02-15 | 2015-05-27 | 华北电力科学研究院有限责任公司 | Gas thermal power plant two-driving-one unit auxiliary steam system and on-off control method thereof |
| CN104654268B (en) * | 2015-02-15 | 2016-06-29 | 华北电力科学研究院有限责任公司 | Gas power station two drags a unit Auxiliary Steam and on off control method thereof |
| CN106523048A (en) * | 2016-12-30 | 2017-03-22 | 中国能源建设集团广东省电力设计研究院有限公司 | Main building arrangement structure of gas-steam combined cycle power generation plant |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131218 |