CN209115208U - LNG gas turbine proficiency lifting device and LNG gas turbine - Google Patents
LNG gas turbine proficiency lifting device and LNG gas turbine Download PDFInfo
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- CN209115208U CN209115208U CN201821681946.9U CN201821681946U CN209115208U CN 209115208 U CN209115208 U CN 209115208U CN 201821681946 U CN201821681946 U CN 201821681946U CN 209115208 U CN209115208 U CN 209115208U
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Abstract
The utility model discloses a kind of LNG gas turbine proficiency lifting device and LNG gas turbines.LNG gas turbine proficiency lifting device includes: gasifier and mixed organization；Gasifier receives LNG and the air from environment, is fed through mixed organization after forming Cryogenic air, and the NG after gasification is fed through to the combustion chamber of LNG gas turbine for absorbing the gasification cold energy of LNG using the air received as the gasification heat source of LNG；Mixed organization receives the air from environment and the Cryogenic air from gasifier, and two-way air is fed through to the compressor of LNG gas turbine after mixing.The utility model is used to the air of cooling gas turbine compressor inlet by the cold energy for releasing LNG in gasification, so that atmospheric density becomes larger, increase the temperature ratio of the mass flow for entering compressor air and compressor inlet and outlet, and then increase the power output of gas turbine, promote gas turbine proficiency.
Description
Technical field
The utility model relates to Gas Turbine Generating Units technical field, in particular to a kind of LNG gas turbine proficiency mentions
Rise device and LNG gas turbine.
Background technique
With the continuous development of society, country vigorously advocates efficient, the clean utilization of the energy, with natural gas (Natural
Gas, NG) increase year by year for combustion gas-steam combined cycle power generating unit installed capacity of fuel, so that power industry is to natural
The dependence of gas is also continuously increased.In the case where country advocates the background of " coal changes gas " energetically, there are supply and demand in the demand and supply of natural gas
Unbalanced situation, in-service gas turbine unit may face the insufficient situation of pipeline gas supply, use with gas peak period
Liquefied natural gas (Liquefied Natural Gas, LNG) becomes possibility as peak fuel.
LNG needs the adaptive characters of the techniques to meet combustion chamber to fuel such as gasification before entering gas turbine, in nothing
Cooling needs or without under the conditions of cooling supply, LNG the released cold energy that gasifies before entering gas turbine cannot be efficiently used, be caused
Energy waste simultaneously increases maintenance cost.
Utility model content
The utility model provides a kind of LNG gas turbine proficiency lifting device and LNG gas turbine, so that LNG is in gas
The cold energy generated when change can be effectively used, and while reducing maintenance cost, increase the power output of gas turbine, realize combustion gas
The promotion of turbine efficiency.
The one side of the utility model provides a kind of LNG gas turbine proficiency lifting device, comprising: gasifier and mixing
Mechanism；Gasifier receives LNG and the air from environment, using the air received as the gasification heat source of LNG, for absorbing
The gasification cold energy of LNG is fed through mixed organization after forming Cryogenic air, and the NG after gasification is fed through LNG gas turbine
Combustion chamber；Mixed organization receives the air from environment and the Cryogenic air from gasifier, and two-way air is uniformly mixed
It is fed through the compressor of LNG gas turbine afterwards.
The another aspect of the utility model provides a kind of LNG gas turbine, comprising: including compressor, combustion chamber, turbine
With above-mentioned LNG gas turbine proficiency lifting device；Compressor receives the cold and hot mixing of LNG gas turbine proficiency lifting device output
Cold and hot uniformly mixed air is simultaneously fed through combustion chamber by uniform air；It is equal that combustion chamber receives the cold and hot mixing that compressor is sent into
Even air, and the NG of LNG gas turbine proficiency lifting device output is received, cold and hot uniformly mixed air and NG are burning
Room completes combustion reaction and forms high temperature and high pressure flue gas, and high temperature and high pressure flue gas is fed through expansion work in turbine and becomes low by combustion chamber
It is exported after warm flue gas.
The beneficial effects of the utility model are: by the way that the part normal temperature air for entering gas turbine blower is led to LNG
Gasification cold energy is absorbed, forms Cryogenic air, mix with the air of component environment temperature by heat source of the gasifier as LNG gasification
Uniformly, compressor inlet temperature is reduced, achievees the purpose that increase Gas Turbine Output, promote gas turbine proficiency.
Detailed description of the invention
Fig. 1 is the structural block diagram of the LNG gas turbine proficiency lifting device shown in the utility model embodiment；
Fig. 2 is the LNG gas turbine schematic diagram shown in the utility model embodiment；
Fig. 3 is the LNG gas turbine structure block diagram shown in the utility model embodiment；
Fig. 4 is the LNG gas turbine proficiency method for improving flow chart shown in the utility model embodiment.
Specific embodiment
It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Type embodiment is described in further detail.
Hereinafter, will be described with reference to the accompanying drawings the embodiments of the present invention.However, it should be understood that these descriptions are example
Property, and it is not intended to limit the scope of the utility model.In addition, in the following description, it is omitted to known features and technology
Description, to avoid the concept for unnecessarily obscuring the utility model.
Term as used herein is not intended to limit the utility model just for the sake of description specific embodiment.Here
Word " one ", " one (kind) " and "the" for using etc. also should include the meaning of " multiple ", " a variety of ", unless context is in addition bright
Really point out.In addition, the terms "include", "comprise" as used herein etc. show the feature, step, operation and/or component
In the presence of, but it is not excluded that in the presence of or add other one or more features, step, operation or component.
There are all terms (including technical and scientific term) as used herein those skilled in the art to be generally understood
Meaning, unless otherwise defined.It should be noted that term used herein should be interpreted that with consistent with the context of this specification
Meaning, without that should be explained with idealization or excessively mechanical mode.
In order to solve gas turbine using LNG fuel be conventional fuel or peak fuel when, into gas turbine before gas
The cold energy that the techniques such as change are released nowhere effectively dissolves the problems such as forming cold energy waste and maintenance cost increase, for this feelings
The overall technology design of condition, the utility model is: Gas Turbine Generating Units are being conventional fuel or peak fuel using LNG
When, LNG can release a large amount of cold energy in gasification, and the cold energy released is used to the sky of cooling gas turbine compressor inlet
Gas increases the temperature ratio of the mass flow for entering compressor air and compressor inlet and outlet, in turn so that atmospheric density becomes larger
The power output of gas turbine increases, and promotes gas turbine proficiency.
On the one hand the utility model provides a kind of LNG gas turbine proficiency lifting device.
The LNG gas turbine proficiency lifting device of the present embodiment is suitable for in-service Gas Turbine Generating Units, especially suitable
When using LNG as conventional fuel or peak fuel, energy source station nearby without cooling needs or not for cool condition the case where
Under, LNG, which enters before gas turbine the discharged cold energy that gasifies, to be used effectively, cause energy waste and increase maintenance at
This case where.
Fig. 1 is the structural block diagram of the LNG gas turbine proficiency lifting device shown in the utility model embodiment, and Fig. 2 is this
Utility model implements the LNG gas turbine schematic diagram exemplified, and as shown in Figs. 1-2, the LNG gas turbine proficiency of the present embodiment mentions
Rising device includes: gasifier and mixed organization；
Gasifier receives LNG and the air from environment, using the air received as the gasification heat source of LNG, for inhaling
The gasification cold energy of LNG is received, is fed through mixed organization after forming Cryogenic air, and the NG after gasification is fed through LNG gas turbine
Combustion chamber；Mixed organization receives the air from environment and the Cryogenic air from gasifier, and two-way air is mixed
The compressor of LNG gas turbine is fed through after even.
The present embodiment is by leading to LNG gasification device as LNG gas for the part normal temperature air for entering gas turbine blower
Gasification cold energy is absorbed, forms Cryogenic air, be uniformly mixed with the air of component environment temperature, reduces compressor by the heat source of change
Inlet temperature achievees the purpose that increase Gas Turbine Output, promotes gas turbine proficiency.
In one the present embodiment, gasifier includes the first import, the second import, first outlet and second outlet, mixing machine
Structure includes mixer, and mixer includes the first import, the second inlet and outlet；
Wherein, the first import and the second import of gasifier receive the air from environment respectively and come from LNG air accumulator
LNG, the first outlet and second outlet of gasifier export respectively absorb LNG gasification cold energy after the Cryogenic air and gasification that are formed
NG afterwards, the first outlet of gasifier connect the second import of the mixer；First import of mixer is used for received from ring
The air in border, the second import of mixer receive the Cryogenic air of the first outlet output of the gasifier, the outlet of mixer
Cold and hot uniformly mixed air is fed through in the compressor of LNG gas turbine.
To be sufficiently mixed the air for being fed through compressor, the mixed organization of the present embodiment further includes cyclone, cyclone
Including inlet and outlet；Cyclone includes the outlet of import connection mixer, and the import of cyclone receives mixer outlet output
Mixing air, and cold and hot uniformly mixed air is fed through in the compressor of LNG gas turbine via the outlet of cyclone.
As shown in Fig. 2, gasifier 9 includes the first import, the second import, first outlet and second outlet, mixed organization packet
Mixer 3 and cyclone 4 are included, mixer 3 includes the first import, the second inlet and outlet, and cyclone 4 includes inlet and outlet；
The first import and the second import of gasifier 9 receive air from environment and respectively from LNG air accumulators 8
LNG, the first outlet and second outlet of gasifier 9 export the Cryogenic air and gasification for absorbing and being formed after LNG gasification cold energy respectively
NG afterwards, the second import of the first outlet connection mixer 3 of gasifier 9；First import of mixer 3 is used for received from environment
Air, the second import of mixer receives the Cryogenic air of the first outlet output of gasifier 9, the outlet connection of mixer 3
The import of cyclone 4；The import of cyclone 4 receives the mixing air of the outlet of mixer 3 output, and via the outlet of cyclone 4
Cold and hot uniformly mixed air is fed through in the compressor 5 of LNG gas turbine.
The present embodiment gasifier can be with gasifier in the prior art, and internal specific structure the present embodiment is not done specifically
Description.
It is to be understood that the received surrounding air of the present embodiment gasifier is one of heat source of LNG gasification, it is not to make
For unique heat source of LNG gasification, the gasification result of LNG will not be had an impact.
The Cryogenic air and surrounding air being fed through in mixed organization pass through mixer and cyclone effect, temperature,
Speed and pressure field etc. are sufficiently mixed, and are formed cold and hot uniformly mixed air and are fed through in compressor, so that entering pressure
The air themperature of mechanism of qi reduces, and atmospheric density becomes larger, and increases into mass flow and the compressor inlet and outlet of compressor air
Temperature ratio, and then increase the power output of gas turbine, promote the efficiency of gas turbine.
Since the air entered in compressor is to be uniformly mixed to be formed by normal temperature air all the way and all the way lower temperature air
, the adjusting to compressor air temperature is sent into can be realized according to the change of two-way air capacity.In the present embodiment, as shown in Fig. 2,
First flow is set on the admission line of 9 first import of gasifier and adjusts meter 1, is set on the admission line of 3 second import of mixer
It sets second flow and adjusts meter 2, the air from environment is divided into two-way, in actual moving process, can run work according to unit
Condition adjusts meter 1 and second flow adjusting meter 2 by first flow to control the air of environment temperature and the stream of Cryogenic air respectively
Amount guarantees that the temperature for entering compressor air is in allowed band, realizes that compressor air flow and temperature are adjustable, has behaviour
Make convenient feature.
With reference to Fig. 2, the LNG gas turbine proficiency lifting device of the present embodiment further includes heater 10 and pressure reducing valve 11；Add
The NG temperature that hot device 10 exports gasifier increases, and the raised NG of temperature is adjusted by pressure reducing valve 11 to preset pressure, will
The combustion chamber of LNG gas turbine is fed through through excess pressure NG adjusted, the cold and hot uniform air and NG after cooling are burning
Combustion reaction is completed in room 6 and forms high temperature and high pressure flue gas, then the flue gas for sending into turbine 7 expansion work to become lower temperature,
The flue gas of lower temperature is finally discharged into waste heat boiler and carries out heat exchange.Wherein, preferably, heater 10 is water to the present embodiment
Bathe heater.
On the other hand the utility model provides a kind of LNG gas turbine.
Fig. 3 is the LNG gas turbine structure block diagram shown in the utility model embodiment, as shown in figure 3, the present embodiment
LNG gas turbine includes: compressor, combustion chamber, turbine and the LNG gas turbine proficiency lifting device being described above.
Compressor receives the cold and hot uniformly mixed air of LNG gas turbine proficiency lifting device output and by cold and hot mixing
Uniform air is fed through combustion chamber；Combustion chamber receives the cold and hot uniformly mixed air that compressor is sent into, and receives LNG combustion
The NG of gas-turbine efficiency improving device output, cold and hot uniformly mixed air and NG complete combustion reaction in combustion chamber and form high temperature
High temperature and high pressure flue gas is fed through after expansion work in turbine becomes low-temperature flue gas and exports by high pressure flue gas, combustion chamber.
In practical application, low-temperature flue gas is discharged into waste heat boiler by the combustion chamber of the present embodiment, so that waste heat boiler carries out
Heat exchange, promotes capacity usage ratio.
During whole operation, since air completes the absorption of LNG cold energy before entering compressor, during being somebody's turn to do
Uniformly mixed air after the cooling of formation is completed to compress in compressor, compressor caused by the reduction of air themperature,
The operating condition variation of the gas turbines key equipment such as combustion chamber, turbine allows in variation range in the design of each component, and calms the anger
The core equipments such as machine, combustion chamber, turbine do not do any improvement, i.e., change in existing gas-steam combined cycle set system
On the basis of change small, system structure stability is not affected.
On the other hand the utility model provides a kind of LNG gas turbine proficiency method for improving.
Fig. 4 is the LNG gas turbine proficiency method for improving flow chart shown in the utility model embodiment, as shown in figure 4, this
The method of embodiment includes:
S410 receives the air from environment.
The present embodiment does not limit the mode that surrounding air is input to gasifier and mixed organization, such as air blast can be set
Surrounding air is delivered in air pipeline by machine, by the way that two-way is arranged in air pipeline, is realized to the branch of surrounding air
Reason.
The air received is divided into two-way by S420, and air is fed through the gasification heat source in gasifier as LNG all the way,
For absorbing the gasification cold energy of LNG, Cryogenic air is formed.
The Cryogenic air of formation and another way air are fed through in mixed organization and carry out cold and hot mixing, obtain cold by S430
The uniform air of hot mixing is simultaneously fed through in the compressor of LNG gas turbine.
In a scheme of the present embodiment, first flow adjusting is arranged in the present embodiment on the admission line of gasifier
Meter, and, second flow is set on the admission line of mixed organization and adjusts meter, adjusts meter and second flow using first flow
It adjusts meter control and enters the flow of surrounding air and the flow of Cryogenic air in mixed structure, guarantee the temperature for entering compressor air
Degree realizes the adjustable of compressor air flow and temperature in the allowed band.
In another scheme of the present embodiment, when receiving the air from environment, also receive from LNG air accumulator
LNG is simultaneously fed through in gasifier and carries out gasification process, the NG after being gasified；It is promoted using heater after gasifying in gasifier
The temperature of NG, and adjusting the pressure of NG after temperature is promoted to preset pressure, the NG that obtains that treated are simultaneously fed through combustion chamber.
Cold and hot uniformly mixed air is fed through and calms the anger after obtaining cold and hot uniformly mixed air by the present embodiment
It is fed through combustion chamber after entering compression processing in machine, cold and hot uniformly mixed air and NG is made to complete combustion reaction simultaneously in combustion chamber
High temperature and high pressure flue gas is formed, high temperature and high pressure flue gas is fed through after expansion work in turbine becomes low-temperature flue gas and is drained into waste heat pot
Heat exchange is carried out in furnace.
For the ease of clearly describing the technical solution of the utility model embodiment, in the embodiment of utility model, use
The printed words such as " first ", " second " are to function and act on essentially identical identical entry or similar item distinguishes, art technology
Personnel are understood that the printed words such as " first ", " second " are not defined quantity and execution order.
Above description is only a specific implementation of the present invention, under the above-mentioned introduction of the utility model, this field
Technical staff can carry out other improvement or deformation on the basis of the above embodiments.It will be understood by those skilled in the art that
Above-mentioned specific descriptions only preferably explain the purpose of this utility model, and the protection scope of the utility model should be with claim
Protection scope subject to.
Claims (8)
1. a kind of LNG gas turbine proficiency lifting device characterized by comprising gasifier and mixed organization；
The gasifier receives LNG and the air from environment, using the air received as the gasification heat source of LNG, for inhaling
The gasification cold energy of LNG is received, is fed through mixed organization after forming Cryogenic air, and the NG after gasification is fed through LNG gas turbine
Combustion chamber；
The mixed organization receives the air from environment and the Cryogenic air from gasifier, and two-way air is uniformly mixed
It is fed through the compressor of LNG gas turbine afterwards.
2. the apparatus according to claim 1, which is characterized in that the gasifier includes the first import, the second import, first
Outlet and second outlet, the mixed organization include mixer, and the mixer includes the first import, the second inlet and outlet；
The first import and the second import of the gasifier receive the air from environment and the LNG from LNG air accumulator respectively,
After the first outlet and second outlet of the gasifier export the Cryogenic air and gasification for absorbing and being formed after LNG gasification cold energy respectively
NG, the first outlet of the gasifier connects the second import of the mixer；
First import of the mixer is used for the air received from environment, and the second import of the mixer receives the gasification
The Cryogenic air of the first outlet output of device, cold and hot uniformly mixed air is fed through LNG combustion gas by the outlet of the mixer
In the compressor of turbine.
3. the apparatus of claim 2, which is characterized in that the mixed organization further includes cyclone, the cyclone
Including inlet and outlet；
The cyclone includes the outlet that import connects the mixer, and the import of the cyclone receives the mixer outlet
The mixing air of output, and cold and hot uniformly mixed air is fed through calming the anger for LNG gas turbine via the outlet of cyclone
In machine.
4. the apparatus of claim 2, which is characterized in that is arranged on the admission line of first import of gasifier
One flow-controlling meter, setting second flow adjusts meter on the admission line of second import of mixer.
5. the apparatus according to claim 1, which is characterized in that further include heater and pressure reducing valve；
The NG temperature that the heater exports the gasifier increases, and the raised NG of temperature is adjusted by pressure reducing valve to pre-
If pressure, the combustion chamber of LNG gas turbine will be fed through through excess pressure NG adjusted.
6. device according to claim 5, which is characterized in that the heater is water-bath heater.
7. a kind of LNG gas turbine, which is characterized in that including any one of compressor, combustion chamber, turbine and claim 1-6 institute
The LNG gas turbine proficiency lifting device stated；
The compressor receives the cold and hot uniformly mixed air of the LNG gas turbine proficiency lifting device output and will be described
Cold and hot uniformly mixed air is fed through the combustion chamber；
The combustion chamber receives the cold and hot uniformly mixed air that compressor is sent into, and receives the LNG gas turbine proficiency
The NG of lifting device output, cold and hot uniformly mixed air and NG complete combustion reaction in the combustion chamber and form high temperature and pressure cigarette
High temperature and high pressure flue gas is fed through after expansion work in turbine becomes low-temperature flue gas and exports by gas, the combustion chamber.
8. LNG gas turbine according to claim 7, which is characterized in that low-temperature flue gas is discharged into remaining by the combustion chamber
Heat boiler.
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| CN201821681946.9U CN209115208U (en) | 2018-10-17 | 2018-10-17 | LNG gas turbine proficiency lifting device and LNG gas turbine |
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| CN201821681946.9U CN209115208U (en) | 2018-10-17 | 2018-10-17 | LNG gas turbine proficiency lifting device and LNG gas turbine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356717A (en) * | 2018-10-17 | 2019-02-19 | 广州智光节能有限公司 | LNG gas turbine and its efficiency improving device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356717A (en) * | 2018-10-17 | 2019-02-19 | 广州智光节能有限公司 | LNG gas turbine and its efficiency improving device and method |
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