CN109209648A - Gas turbine inlet air heating device, method and Combined-cycle Gas Turbine Unit - Google Patents
Gas turbine inlet air heating device, method and Combined-cycle Gas Turbine Unit Download PDFInfo
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- CN109209648A CN109209648A CN201710543806.9A CN201710543806A CN109209648A CN 109209648 A CN109209648 A CN 109209648A CN 201710543806 A CN201710543806 A CN 201710543806A CN 109209648 A CN109209648 A CN 109209648A
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- Prior art keywords
- gas turbine
- inlet air
- heating device
- turbine inlet
- air heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/08—Heating air supply before combustion, e.g. by exhaust gases
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The present invention provides a kind of gas turbine inlet air heating device, method and Combined-cycle Gas Turbine Units.Gas turbine inlet air heating device provided by the invention includes: heat exchanger, and the heat exchanger is set in the inlet plenum of gas turbine；The side of the heat exchanger is connect by pipeline with heat source, and the heat source is used to provide heat source water to the heat exchanger by pipeline；The heat exchanger is used to heat gas turbine inlet air using heat source water.Gas turbine inlet air heating device provided by the invention can heat the inlet air of gas turbine, improve the rate of load condensate and efficiency of gas turbine.
Description
Technical field
The present invention relates to technical field of gas turbine, more particularly to a kind of gas turbine inlet air heating device, method and
Combined-cycle Gas Turbine Unit.
Background technique
After the operation of Gas Turbine Combined-cycle (Combined-Cycle Gas Turbine, CCGT) unit commitment, unit
Operating condition influenced by factors such as power grid distribution, locating environment, it is difficult to it is more to meet different operation characteristic and owner
The performance requirement of sample.
There can be unmatched problem between unit performance and user demand.For example, when winter condition is run, due to environment
Temperature is lower, is significantly increased though unit is contributed at full capacity, efficiency reduces；If power grid is not necessarily to biggish power supply volume, electricity at this time
Factory will run at part load, so that the economy of unit further decreases.
Therefore, the overall performance of Combined-cycle Gas Turbine Unit how is improved, the factors pair such as power grid distribution, environment are reduced
The influence of unit improves the efficiency of unit, is problem to be solved.
Summary of the invention
In view of the foregoing deficiencies of prior art and there are the problem of, the purpose of the present invention is to provide a kind of combustion gas wheels
Machine air-intake heating mechanism and method, for improving the performance of Combined-cycle Gas Turbine Unit, reduce power grid distribution, environment etc. because
Influence of the element to unit, improves the efficiency of unit.
In order to achieve the above objects and other related objects, the present invention provides a kind of gas turbine inlet air heating device, packets
Include: heat exchanger, the heat exchanger are set in the inlet plenum of gas turbine；The side of the heat exchanger is connected by pipeline and heat source
It connects, the heat source is used to provide heat source water to the heat exchanger by pipeline；The heat exchanger is used to utilize heat source water heating combustion
Gas-turbine air inlet.
In one embodiment of the invention, the gas turbine is specially the combustion gas wheel of Combined-cycle Gas Turbine Unit
Machine, the gas Combined Cycle Unit include economizer；The heat source is the economizer.
In one embodiment of the invention, the gas turbine is the gas turbine of Combined-cycle Gas Turbine Unit, institute
Stating gas Combined Cycle Unit includes condensing water conduit；The gas turbine inlet air heating device further include: water pump, the water pump
It is connect by pipeline with the other side of the heat exchanger；The water pump is for the heat source after heating to gas turbine inlet air
Water is delivered to the condensing water conduit.
In one embodiment of the invention, the gas turbine inlet air heating device further include: bypass duct, the bypass
One end of pipeline by the connection of pipeline between first interface and the heat source and the heat exchanger, the bypass duct it is another
End is connected by the pipeline between second interface and the heat exchanger and the water pump.
In one embodiment of the invention, the gas turbine inlet air heating device further include: the first regulating valve, described
One regulating valve is set on the pipeline between the heat exchanger and the first interface；Bypass valve, the bypass valve
It is set on the bypass duct.
In one embodiment of the invention, the gas turbine inlet air heating device further include: first flowmeter, described
Flow meters are set on the pipeline between the first interface and the heat source；Second flowmeter, the second flowmeter are set
It is placed on the pipeline between the second interface and the heat exchanger.
In one embodiment of the invention, the gas turbine inlet air heating device further include: dehumidification device and/or hydrophobic
Device；The dehumidification device and/or steam trap connection are set between the heat exchanger and gas turbine.
In one embodiment of the invention, the heat exchanger is set between the coarse filtration net of inlet plenum and thin filter screen.
Preceding claim gas turbine inlet air heating devices heat gas turbine inlet air is utilized the present invention provides a kind of
Method, comprising the following steps: close the interface between heat source and described device；Utilize condensing water conduit and gas turbine inlet air
Pressure difference between heating device injects condensed water to the gas turbine inlet air heating device；When the system pressure of described device is built
It is vertical when finishing, the interface between heat source and described device is opened, to heat using the heat exchanger to gas turbine inlet air.
The present invention provides a kind of Combined-cycle Gas Turbine Units, including gas turbine inlet air described above heating dress
It sets.
As described above, gas turbine inlet air heating device, method and Combined-cycle Gas Turbine Unit provided by the invention,
The gas turbine inlet air heating device provided through the invention, method are provided, gas turbine can be entered
Mouth air is heated, and the rate of load condensate of gas turbine is improved；When being applied to Combined-cycle Gas Turbine Unit, machine may be implemented
Group combined cycle gross capability is constant, the raised operational mode of rate of load condensate of gas turbine；After being heated to gas turbine inlet air
Increase flue gas exhaust gas temperature, and then the power output of the steam turbine in Combined-cycle Gas Turbine Unit can be promoted；Also,
It can be using the economizer of unit as the heat source of heated inlet air, so as to improve the efficiency of unit operation；In addition, to entering
Water at low temperature after mouth air is heated can be transported in condensing water conduit, utilization can be recycled, thus further
Improve the efficiency of unit operation.
Detailed description of the invention
Fig. 1 is shown as the structural schematic diagram of gas turbine inlet air heating device provided in an embodiment of the present invention.
Fig. 2 is shown as the schematic diagram of the working principle of gas turbine inlet air heating device provided in an embodiment of the present invention.
Component label instructions
1 gas turbine inlet air heating device
11 heat exchangers
12 water pumps
13 bypass ducts
131 first interfaces
132 second interfaces
14 first regulating valves
15 bypass valves
16 first flowmeters
17 second flowmeters
2 heat sources
3 condensing water conduits
4 gas turbines
The inlet plenum of 5 gas turbines
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily.
It should be clear that structure, ratio, size etc. depicted in this specification institute attached drawing, only to cooperate specification to be taken off
The content shown is not intended to limit the invention enforceable qualifications so that those skilled in the art understands and reads, therefore
Do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing the present invention
Under the effect of can be generated and the purpose that can reach, the model that disclosed technology contents can be covered should all be still fallen in
In enclosing.Meanwhile cited such as "upper" in this specification, "lower", "left", "right", " centre " and " one " term, be also only
Convenient for being illustrated for narration, rather than to limit the scope of the invention, relativeness is altered or modified, in no essence
It changes under technology contents, when being also considered as the enforceable scope of the present invention.
Gas turbine is a kind of rotary power for useing a continuous flowing gas as a working medium, thermal energy being converted to mechanical work
It is mechanical.Gas turbine may include compressor, combustion chamber, turbine, control system and auxiliary system etc.；Wherein, auxiliary system can
To include gas handling system, gas handling system may include inlet plenum, and coarse filtration net and thin filter screen can be set in inlet plenum.
Fig. 1 shows the structure of gas turbine inlet air heating device 1 provided by one embodiment of the present invention.As shown in Figure 1,
Gas turbine inlet air heating device 1 may include: heat exchanger 11, and heat exchanger 11 is set to gas turbine 4 (as shown in Figure 2) air inlet
In the inlet plenum 5 (as shown in Figure 2) of system, the side of heat exchanger 11 is connect by pipeline with heat source 2, and heat source 2 is used for heat exchange
Device 11 provides heat source water, and heat exchanger 11 is used to enter using heat source water heating the air of gas turbine 4.Heat exchanger 11 can be energy
Enough carry out the heat exchanger of air water heat exchange, such as coil exchanger.
In one example, heat exchanger 11 is specifically set between the coarse filtration net and thin filter screen in inlet plenum 5.
In one example, gas turbine 4 is specifically as follows the gas turbine in Combined-cycle Gas Turbine Unit.Combustion gas
Turbine combined cycle, also known as combustion gas-Steam Combined Cycle refer to a kind of hair that gas turbine and steam turbine combine
Electric mode.Combined-cycle Gas Turbine Unit is mainly made of gas turbine, waste heat boiler, steam turbine three parts.Waste heat pot
Furnace may include economizer, and economizer may be mounted at the lower part of waste heat boiler back-end ductwork, can use the waste heat pair of smoke evacuation
Boiler feedwater is heated.Economizer may be used as heat source 2.Economizer can use the waste-heat boiler feedwater of smoke evacuation, and
It is transmitted to heat exchanger 11 using the water supply of heating as heat source water, for heating the air for entering gas turbine 4.In an example
In, which can be low-pressure coal saver.In this example, to the heating for the air for entering gas turbine 4 without additionally mentioning
Supplying heat source, but the smoke discharging residual heat heating of waste heat boiler is utilized to enter the air of gas turbine 4, to save the energy, improve
The thermal efficiency of unit.
In one example, gas turbine 4 is specifically as follows the gas turbine in Combined-cycle Gas Turbine Unit, combustion gas
Turbine combined cycle unit may include condensing water conduit 3.Gas turbine inlet air heating device 1 can also include water pump 12.Water
Pump 12 is connect by pipeline with the other side of heat exchanger 11.Water pump 12 is for the heat source after heating to gas turbine inlet air
Water is forced into certain pressure, to be delivered to the condensing water conduit 3 of Combined-cycle Gas Turbine Unit.In this example, to combustion gas
Heat source water after turbine air inlet is heated is transported to the condensing water conduit 3 of unit, allows to be used again, thus
Resource is saved, and further improves the thermal efficiency of Combined-cycle Gas Turbine Unit.
In one example, gas turbine inlet air heating device 1 can also include bypass duct 13.The one of bypass duct 13
End is connect by the pipeline connection between first interface 131 and heat source 2 and heat exchanger 11, the other end of bypass duct 13 by second
Mouth 132 and the pipeline between heat exchanger 11 and water pump 13 connect.Bypass duct 13 is used to meet the safe traffic of the operation of water pump 12
It is required that.Also, bypass duct 13 can increase combustion while the safe traffic for meeting the operation of water pump 12 in conjunction with main pipeline requires
The adjusting section of 1 water side system of gas-turbine air-intake heating mechanism, realizes and adds in bigger range to gas turbine inlet air
Hot temperature is controlled, and the flexibility of control is also increased.
In one example, as shown in Figure 1, gas turbine inlet air heating device 1 can also include: the first regulating valve 14,
First regulating valve 14 is set on the pipeline between heat exchanger 11 and the first interface 131；Bypass valve 15, bypass are adjusted
Valve 15 is set on bypass duct 13.In this example, heat source water in heat exchanger 11 can be controlled by the first regulating valve 14
Flow can be realized when different feed rates, different working conditions and different environmental condition to combustion gas
The control of turbine inlet air heating temperature, has advanced optimized the operational efficiency of unit.Bypass valve 15 combines the first regulating valve
The total flow of water in 14 regulating devices 1 may be implemented while meeting heat exchanger 11 and needing, and also meet the operation of water pump 12
Safe traffic requirement.
In one example, as shown in Figure 1, the gas turbine inlet air heating device 1 further include: 16 He of first flowmeter
Second flowmeter 17.First flowmeter 16 is set on the pipeline before first interface 131, i.e., first interface 131 and heat source 2 it
Between pipeline on.Second flowmeter 17 is set on the pipeline between second interface 132 and the heat exchanger 11.Second flowmeter
17, first flowmeter 16 and the first regulating valve 14, bypass valve 15 may be implemented to adjust the heat source water in heat exchanger 11 simultaneously
Flow and the water in water pump 12 flow.
Fig. 2 shows the working principles of gas turbine inlet air heating device 1 provided in an embodiment of the present invention.Heat exchanger 11 is set
In in the inlet plenum 5 of gas turbine 4, air enters gas turbine 4 by heat exchanger 11 with certain flow.Heat source water passes through
Pipeline enters heat exchanger 11, carries out air water heat exchange, and the air that will be entered in gas turbine is heated to the rate of load condensate with setting
Opposite matched temperature.The heat source water after air water exchanges heat that carried out come out from heat exchanger 11 can be delivered to condensation by water pump 12
Waterpipe 3.
In one example, gas turbine inlet air heating device 1 provided in an embodiment of the present invention further include: dehumidification device
And/or steam trap connection；The dehumidification device and/or steam trap connection are set between the heat exchanger 11 and gas turbine 4.Dehumidifying
Device, for example, dehumidifying shutter, the moisture in air inlet after can remove heating, prevent the generation of condensed water and enter combustion
In gas-turbine；Steam trap connection can also be configured in the bottom of dehumidification device, to further prevent condensed water to enter gas turbine
In.
In one example, gas turbine inlet air heating device 1 provided in an embodiment of the present invention further include safety valve and/or
Electromagnetism diffusion valve excludes security risk for the pressure in system control pipeline to prevent manifold pressure excessively high.
Gas turbine inlet air heating device 1 provided in an embodiment of the present invention further includes pressure gauge and/or thermometer, for being
System controls it.
The embodiment of the invention also provides utilize gas turbine inlet air heating device 1 provided in an embodiment of the present invention heating combustion
The method of gas-turbine air inlet.Method includes the following steps: closing the interface between heat source 2 and described device 1；Utilize condensed water
Pressure difference between pipeline 3 and gas turbine inlet air heating device 1 injects condensed water to the gas turbine inlet air heating device 1；
When the foundation of the system pressure of described device finishes, the interface between heat source 2 and described device 1 is opened, to utilize the heat exchange
Device 11 heats gas turbine inlet air.The exemplary purpose is to prevent to 1 heat injection of gas turbine inlet air heating device
When the water of source, heat source water vapor causes manifold pressure to increase sharply.Gas turbine inlet air heating device 1 includes the first regulating valve 14, other
Road pipeline 13, bypass valve 15.It can close the valve between gas turbine inlet air heating device 1 and heat source 2, and close the
One regulating valve 14 opens bypass valve 15.3 pressure of condensing water conduit is higher than 1 system pressure of gas turbine inlet air heating device,
Using the pressure difference of condensing water conduit 3 and gas turbine inlet air heating device 1, the reverse injection of gas turbine inlet air heating device 1 is solidifying
It bears water.When the foundation of the system pressure of gas turbine inlet air heating device 1 finishes, vent valve is closed, gas turbine inlet air is opened
Valve, the first regulating valve 14 between heating device 1 and heat source 2 inject heat source water to carry out to the air for entering gas turbine 4
Heating.Water pump 12 can be water circulating pump, and the water in gas turbine inlet air heating device 1 can be pressurized to injection condensing water conduit
In 3.
The embodiment of the invention provides a kind of Combined-cycle Gas Turbine Units.The Combined-cycle Gas Turbine Unit includes
Gas turbine inlet air heating device 1, gas turbine inlet air heating device 1 are used to heat the combustion using the heat source water that heat source 2 provides
Gas turbine inlet air in gas-turbine combined cycle unit.
In one example, the economizer in the Combined-cycle Gas Turbine Unit may be used as heat source 2.In the example
In, using the hot water heating gas turbine inlet air in economizer, the waste heat of unit is made full use of, is improving unit fortune
While line efficiency, resource is also saved.
In one example, the water pump 12 in gas turbine inlet air heating device 1 can will carry out 4 air inlet of gas turbine
Heat source water after heating is delivered in the condensing water conduit 3 in the Combined-cycle Gas Turbine Unit.In this example, it will carry out
Heat source water after air water heat exchange is delivered in the condensing water conduit 3 of unit, can be recycled to it, and then further
It improves the efficiency of unit and saves resource.
Gas turbine inlet air heating device, method and Combined-cycle Gas Turbine Unit provided in an embodiment of the present invention, tool
Have it is following the utility model has the advantages that provide through the invention gas turbine inlet air heating device, method, can be to the entrance of gas turbine
Air is heated, and the rate of load condensate of gas turbine is improved；When being applied to Combined-cycle Gas Turbine Unit, unit may be implemented
Combined cycle gross capability is constant, the gas turbine raised operational mode of rate of load condensate；It can after being heated to gas turbine inlet air
So that flue gas exhaust gas temperature rises, and then the power output of the steam turbine in Combined-cycle Gas Turbine Unit can be promoted；Also, it can
Using the heat source by the economizer of unit as heated inlet air, so as to improve the efficiency of unit operation；In addition, to entrance
Water at low temperature after air is heated can be transported in condensing water conduit, can be recycled utilization, to further mention
The high efficiency of unit operation.
In conclusion the shortcomings that present invention can effectively overcome in the prior art and have high industrial utilization value.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (10)
1. a kind of gas turbine inlet air heating device (1), which is characterized in that the gas turbine inlet air heating device (1) includes:
Heat exchanger (11), the heat exchanger (11) are set in the inlet plenum (5) of gas turbine (4)；
The side of the heat exchanger (11) is connect by pipeline with heat source (2), and the heat source (2) is used to change by pipeline to described
Hot device (11) provides heat source water；
The heat exchanger (11) is used to heat gas turbine inlet air using heat source water.
2. gas turbine inlet air heating device (1) according to claim 1, which is characterized in that the gas turbine (4) is
The gas turbine of Combined-cycle Gas Turbine Unit, the gas Combined Cycle Unit include economizer；
The heat source (2) is the economizer.
3. gas turbine inlet air heating device (1) according to claim 1 or 2, which is characterized in that the gas turbine
It (4) is the gas turbine of Combined-cycle Gas Turbine Unit, the gas Combined Cycle Unit includes condensing water conduit (3)；
The gas turbine inlet air heating device (1) further include: water pump (12), the water pump (12) pass through pipeline and the heat exchange
The other side of device (11) connects；
The water pump (12) is used to the heat source water after heating gas turbine inlet air being delivered to the condensing water conduit
(3)。
4. gas turbine inlet air heating device (1) according to claim 3, which is characterized in that the gas turbine inlet air
Heating device (1) further include: bypass duct (13), one end of the bypass duct (13) by first interface (131) with it is described
Pipeline connection between heat source (2) and the heat exchanger (11), the other end of the bypass duct (13) pass through second interface
(132) pipeline between the heat exchanger (11) and the water pump (12) is connect.
5. gas turbine inlet air heating device (1) according to claim 4, which is characterized in that the gas turbine inlet air
Heating device (1) further include:
First regulating valve (14), first regulating valve (14) are set to the heat exchanger (11) and the first interface (131)
Between pipeline on；
Bypass valve (15), the bypass valve (15) are set on the bypass duct (13).
6. gas turbine inlet air heating device (1) according to claim 5, which is characterized in that the gas turbine inlet air
Heating device (1) further include:
First flowmeter (16), the first flowmeter (16) are set between the first interface (131) and the heat source (2)
Pipeline on；
Second flowmeter (17), the second flowmeter (17) are set to the second interface (132) and the heat exchanger (11)
Between pipeline on.
7. gas turbine inlet air heating device (1) according to claim 1, which is characterized in that the gas turbine inlet air
Heating device (1) further include: dehumidification device and/or steam trap connection；
The dehumidification device and/or steam trap connection are set between the heat exchanger (11) and gas turbine (4).
8. gas turbine inlet air heating device (1) according to claim 1, which is characterized in that the heat exchanger (11) sets
It is placed between the coarse filtration net and thin filter screen of inlet plenum (5).
9. utilizing the side of described in any item gas turbine inlet air heating device (1) the heating gas turbine inlet airs of claim 3-6
Method, which comprises the following steps:
Close the interface between heat source (2) and described device (1)；
Added using the pressure difference between condensing water conduit (3) and gas turbine inlet air heating device (1) to the gas turbine inlet air
Thermal (1) injects condensed water；
When the foundation of the system pressure of described device finishes, the interface between heat source (2) and described device (1) is opened, to utilize
The heat exchanger (11) heats gas turbine inlet air.
10. a kind of Combined-cycle Gas Turbine Unit, which is characterized in that including the described in any item combustion gas wheels of claim 1-8
Machine air-intake heating mechanism (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710543806.9A CN109209648A (en) | 2017-07-05 | 2017-07-05 | Gas turbine inlet air heating device, method and Combined-cycle Gas Turbine Unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710543806.9A CN109209648A (en) | 2017-07-05 | 2017-07-05 | Gas turbine inlet air heating device, method and Combined-cycle Gas Turbine Unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109209648A true CN109209648A (en) | 2019-01-15 |
Family
ID=64992217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710543806.9A Pending CN109209648A (en) | 2017-07-05 | 2017-07-05 | Gas turbine inlet air heating device, method and Combined-cycle Gas Turbine Unit |
Country Status (1)
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| CN (1) | CN109209648A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113931749A (en) * | 2021-08-30 | 2022-01-14 | 华能南京燃机发电有限公司 | Combustion engine air inlet heating system |
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| JP2003161164A (en) * | 2001-11-26 | 2003-06-06 | Hitachi Ltd | Combined-cycle power generation plant |
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