CN111287851B - Method and system for cooling inlet air of gas turbine with humidity control - Google Patents
Method and system for cooling inlet air of gas turbine with humidity control Download PDFInfo
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- CN111287851B CN111287851B CN202010139903.3A CN202010139903A CN111287851B CN 111287851 B CN111287851 B CN 111287851B CN 202010139903 A CN202010139903 A CN 202010139903A CN 111287851 B CN111287851 B CN 111287851B
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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
- F02C7/12—Cooling of plants
- F02C7/14—Cooling of plants of fluids in the plant, e.g. lubricant or fuel
- F02C7/141—Cooling of plants of fluids in the plant, e.g. lubricant or fuel of working fluid
- F02C7/143—Cooling of plants of fluids in the plant, e.g. lubricant or fuel of working fluid before or between the compressor stages
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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
- F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/311—Air humidity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/313—Air temperature
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a method and a system for cooling inlet air of a gas turbine with humidity control, which comprises the following steps: step M1: installing cooling coil unit 2, downstream temperature and humidity sensor 3 and upstream temperature and humidity sensor 4 inside air filtering room 1, step M2: after entering the air filtering room 1, outside air is cooled by the cooling coil unit 2, the downstream temperature and humidity sensor 3 is installed at the downstream of the air flow channel of the cooling coil unit 2, and the upstream temperature and humidity sensor 4 is installed at the upstream of the air flow channel of the cooling coil unit 2; step M3: a cooling water inlet pipe 6 is installed before the inlet of the cooling coil unit 2, and a cooling water outlet pipe 7 is installed after the outlet of the cooling coil unit 2; an electric flow regulating valve 5 is arranged on a cooling water inlet pipeline 6; step M4: the intake air cooling control unit 8 employs closed-loop control. The invention solves the problem of poor economy in the environment with high relative humidity in the traditional air cooling process.
Description
Technical Field
The invention relates to the technical field of gas turbine inlet air cooling, in particular to a gas turbine inlet air cooling method and system with humidity control.
Background
Due to the nature of gas turbines, the lower the inlet air temperature, the higher the output of the combustion engine. When the air temperature is high, in order to enable the combustion engine to obtain high output, generally, a gas turbine generator set is provided with a cooling coil in an air filtering room, and cooling water is introduced into the cooling coil to exchange heat with hot air, so that the temperature of the air entering the combustion engine is reduced.
The cooling water flow of an air inlet cooling system equipped for the current aeroderivative gas turbine is not adjustable, the cooling water usually comes from a lithium bromide refrigerating unit, and certain energy is consumed for producing the cooling water. The temperature of the air is gradually reduced in the cooling process, the relative humidity is increased, when the air is cooled to the dew point temperature (100% relative humidity), the air is saturated, if the air is cooled continuously, condensate is separated out, a large amount of cold energy is used for condensing water, and the temperature reduction of the air is limited. According to related researches, the energy consumed by air at each time of reducing 1 ℃ is 5-5.5 times of that before the air is saturated, a large amount of cooling water obtained by energy is sacrificed, but the output of the exchanged combustion engine is not obviously increased, so that the economical efficiency is poor.
Patent document CN109519267A discloses a cooling system including an intake and exhaust pipe, which includes a water pump, wherein the water pump is connected to the exhaust pipe to form a heating loop after passing through a cylinder sleeve, a cylinder cover and an intake and exhaust valve in sequence; the water pump sequentially passes through the cylinder sleeve, the cylinder cover, the intermediate cooling valve and the primary intercooler and then is connected to the radiator through a pipeline to form a cooling loop a; and the water pump sequentially passes through the inlet valve, the air inlet pipe, the secondary intercooler, the exhaust pipe and the discharge valve and then is connected to the radiator through a pipeline to form a cooling loop b. This patent is clearly not well suited for use in current aeroderivative gas turbines.
Disclosure of Invention
In view of the deficiencies in the prior art, it is an object of the present invention to provide a method and system for cooling inlet air to a gas turbine engine with humidity control.
The invention provides a method for cooling inlet air of a gas turbine with humidity control, which comprises the following steps: step M1: the cooling coil unit 2, the downstream temperature and humidity sensor 3 and the upstream temperature and humidity sensor 4 are arranged in the air filtering room 1,
step M2: after entering the air filtering room 1, outside air is cooled by the cooling coil unit 2, the downstream temperature and humidity sensor 3 is installed at the downstream of the air flow channel of the cooling coil unit 2, and the upstream temperature and humidity sensor 4 is installed at the upstream of the air flow channel of the cooling coil unit 2;
step M3: a cooling water inlet pipe 6 is installed before the inlet of the cooling coil unit 2, and a cooling water outlet pipe 7 is installed after the outlet of the cooling coil unit 2;
an electric flow regulating valve 5 is arranged on the cooling water inlet pipeline 6 and is used for regulating the flow of cooling water in the cooling water inlet pipeline 6;
step M4: the intake air cooling control unit 8 adopts closed-loop control to obtain first control information of the electric flow regulating valve according to parameter information of a downstream temperature and humidity sensor;
acquiring second control information of the electric flow regulating valve according to the parameter information of the upstream temperature and humidity sensor;
step M5: and acquiring display information of the cooling control unit according to the parameter information of the downstream temperature and humidity sensor, the parameter information of the upstream temperature and humidity sensor and the first control information of the electric flow regulating valve.
Preferably, the step M4 includes: step M4.1: after the intake air cooling unit is put into operation, the intake air cooling control unit 8 performs PID adjustment according to the downstream temperature and humidity sensor 3, and increases/decreases the opening of the electric flow regulating valve 5 through a 4-20mA signal interface, so that the humidity of the downstream temperature and humidity sensor 3 is maintained at a preset value of 80%.
Preferably, the step M4 further includes: step M4.2: when the downstream temperature and humidity sensor 3 has a humidity higher than the alarm value of 85%, the electric flow rate regulation valve 5 is forcibly closed, and the automatic/manual opening operation of the electric flow rate regulation valve 5 is blocked.
Preferably, the step M4 further includes: step M4.1: when the upstream temperature/humidity sensor 4 has a humidity higher than 80%, the automatic/manual opening operation of the electric flow rate regulation valve 5 is blocked.
Preferably, the step M5 further includes: step M5.1: when the opening of the electric flow regulating valve 5 is larger than 50%, and the humidity difference between the upstream temperature and humidity sensor 4 and the downstream temperature and humidity sensor 3 is smaller than 1%, acquiring inlet air cooling fault display information; the intake air cooling control unit 8 displays "intake air cooling failure";
step M5.2: when the opening of the electric flow regulating valve 5 is smaller than 10% and the humidity of the downstream temperature and humidity sensor 3 is higher than the humidity of the upstream temperature and humidity sensor 4 by more than 3%, acquiring leakage display information of the intake air cooling valve; the intake air cooling control unit 8 displays "intake air cooling valve leakage".
According to the present invention, there is provided a gas turbine inlet air cooling system with humidity control comprising: the system comprises an air filtering room 1, a cooling coil unit 2, a downstream temperature and humidity sensor 3, an upstream temperature and humidity sensor 4, an electric flow regulating valve 5, a cooling water inlet pipeline 6, a cooling water outlet pipeline 7 and an inlet air cooling control unit 8; the following modules were used:
module M1: the cooling coil unit 2, the downstream temperature and humidity sensor 3 and the upstream temperature and humidity sensor 4 are arranged in the air filtering room 1,
module M2: after the outside air enters the air filtering room 1, the outside air is cooled by the cooling coil unit 2, the downstream temperature and humidity sensor 3 is installed at the downstream of the air flow channel of the cooling coil unit 2, and the upstream temperature and humidity sensor 4 is installed at the upstream of the air flow channel of the cooling coil unit 2.
Module M3: a cooling water inlet pipe 6 is installed before the inlet of the cooling coil unit 2, and a cooling water outlet pipe 7 is installed after the outlet of the cooling coil unit 2;
an electric flow regulating valve 5 is installed on the cooling water inlet pipe 6 for regulating the flow rate of the cooling water in the cooling water inlet pipe 6.
Module M4: the intake air cooling control unit 8 adopts closed-loop control to obtain first control information of the electric flow regulating valve according to parameter information of a downstream temperature and humidity sensor;
acquiring second control information of the electric flow regulating valve according to the parameter information of the upstream temperature and humidity sensor;
module M5: and acquiring display information of the cooling control unit according to the parameter information of the downstream temperature and humidity sensor, the parameter information of the upstream temperature and humidity sensor and the first control information of the electric flow regulating valve.
Preferably, said module M4 comprises:
module M4.1: after the intake air cooling unit is put into operation, the intake air cooling control unit 8 performs PID adjustment according to the downstream temperature and humidity sensor 3, and increases/decreases the opening of the electric flow regulating valve 5 through a 4-20mA signal interface, so that the humidity of the downstream temperature and humidity sensor 3 is maintained at a preset value of 80%.
Preferably, the module M4 further includes:
module M4.2: when the downstream temperature and humidity sensor 3 has a humidity higher than the alarm value of 85%, the electric flow rate regulation valve 5 is forcibly closed, and the automatic/manual opening operation of the electric flow rate regulation valve 5 is blocked.
Preferably, the module M4 further includes:
module M4.1: when the upstream temperature/humidity sensor 4 has a humidity higher than 80%, the automatic/manual opening operation of the electric flow rate regulation valve 5 is blocked.
Preferably, the module M5 further includes:
module M5.1: when the opening of the electric flow regulating valve 5 is larger than 50%, and the humidity difference between the upstream temperature and humidity sensor 4 and the downstream temperature and humidity sensor 3 is smaller than 1%, acquiring inlet air cooling fault display information; the intake air cooling control unit 8 displays "intake air cooling failure".
Module M5.2: when the opening of the electric flow regulating valve 5 is smaller than 10% and the humidity of the downstream temperature and humidity sensor 3 is higher than the humidity of the upstream temperature and humidity sensor 4 by more than 3%, acquiring leakage display information of the intake air cooling valve; the intake air cooling control unit 8 displays "intake air cooling valve leakage".
Compared with the prior art, the invention has the following beneficial effects:
by adopting the closed-loop control structure of the intake air cooling control system 8, the invention can automatically match the most appropriate cooling capacity according to the environmental humidity, control the relative humidity of the air entering and passing through the filter element to be lower than 80 percent, and increase the output of the combustion engine in the most economic way. The problem of traditional air cooling in-process, economic nature is not good under the higher environment of relative humidity is solved.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic view of the overall structure of the present invention.
In the figure:
1-air filtration room 5-electric flow regulating valve
2-cooling coil module 6-cooling water inlet pipeline
3-downstream temperature and humidity sensor 7-cooling water outlet pipeline
4-upstream temperature and humidity sensor 8-inlet air cooling control system
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
As shown in fig. 1, the method for cooling intake air of a gas turbine with humidity control according to the present invention comprises: step M1: the cooling coil unit 2, the downstream temperature and humidity sensor 3 and the upstream temperature and humidity sensor 4 are arranged in the air filtering room 1,
step M2: after entering the air filtering room 1, outside air is cooled by the cooling coil unit 2, the downstream temperature and humidity sensor 3 is installed at the downstream of the air flow channel of the cooling coil unit 2, and the upstream temperature and humidity sensor 4 is installed at the upstream of the air flow channel of the cooling coil unit 2;
step M3: a cooling water inlet pipe 6 is installed before the inlet of the cooling coil unit 2, and a cooling water outlet pipe 7 is installed after the outlet of the cooling coil unit 2;
an electric flow regulating valve 5 is arranged on the cooling water inlet pipeline 6 and is used for regulating the flow of cooling water in the cooling water inlet pipeline 6;
step M4: the intake air cooling control unit 8 adopts closed-loop control to obtain first control information of the electric flow regulating valve according to parameter information of a downstream temperature and humidity sensor;
acquiring second control information of the electric flow regulating valve according to the parameter information of the upstream temperature and humidity sensor;
step M5: and acquiring display information of the cooling control unit according to the parameter information of the downstream temperature and humidity sensor, the parameter information of the upstream temperature and humidity sensor and the first control information of the electric flow regulating valve.
Preferably, the step M4 includes: step M4.1: after the intake air cooling unit is put into operation, the intake air cooling control unit 8 performs PID adjustment according to the downstream temperature and humidity sensor 3, and increases/decreases the opening of the electric flow regulating valve 5 through a 4-20mA signal interface, so that the humidity of the downstream temperature and humidity sensor 3 is maintained at a preset value of 80%.
Preferably, the step M4 further includes: step M4.2: when the downstream temperature and humidity sensor 3 has a humidity higher than the alarm value of 85%, the electric flow rate regulation valve 5 is forcibly closed, and the automatic/manual opening operation of the electric flow rate regulation valve 5 is blocked.
Preferably, the step M4 further includes: step M4.1: when the upstream temperature/humidity sensor 4 has a humidity higher than 80%, the automatic/manual opening operation of the electric flow rate regulation valve 5 is blocked.
Preferably, the step M5 further includes: step M5.1: when the opening of the electric flow regulating valve 5 is larger than 50%, and the humidity difference between the upstream temperature and humidity sensor 4 and the downstream temperature and humidity sensor 3 is smaller than 1%, acquiring inlet air cooling fault display information; the intake air cooling control unit 8 displays "intake air cooling failure";
step M5.2: when the opening of the electric flow regulating valve 5 is smaller than 10% and the humidity of the downstream temperature and humidity sensor 3 is higher than the humidity of the upstream temperature and humidity sensor 4 by more than 3%, acquiring leakage display information of the intake air cooling valve; the intake air cooling control unit 8 displays "intake air cooling valve leakage".
According to the present invention, there is provided a gas turbine inlet air cooling system with humidity control comprising: the system comprises an air filtering room 1, a cooling coil unit 2, a downstream temperature and humidity sensor 3, an upstream temperature and humidity sensor 4, an electric flow regulating valve 5, a cooling water inlet pipeline 6, a cooling water outlet pipeline 7 and an inlet air cooling control unit 8; the following modules were used:
module M1: the cooling coil unit 2, the downstream temperature and humidity sensor 3 and the upstream temperature and humidity sensor 4 are arranged in the air filtering room 1,
module M2: after the outside air enters the air filtering room 1, the outside air is cooled by the cooling coil unit 2, the downstream temperature and humidity sensor 3 is installed at the downstream of the air flow channel of the cooling coil unit 2, and the upstream temperature and humidity sensor 4 is installed at the upstream of the air flow channel of the cooling coil unit 2.
Module M3: a cooling water inlet pipe 6 is installed before the inlet of the cooling coil unit 2, and a cooling water outlet pipe 7 is installed after the outlet of the cooling coil unit 2;
an electric flow regulating valve 5 is installed on the cooling water inlet pipe 6 for regulating the flow rate of the cooling water in the cooling water inlet pipe 6.
Module M4: the intake air cooling control unit 8 adopts closed-loop control to obtain first control information of the electric flow regulating valve according to parameter information of a downstream temperature and humidity sensor;
acquiring second control information of the electric flow regulating valve according to the parameter information of the upstream temperature and humidity sensor;
module M5: and acquiring display information of the cooling control unit according to the parameter information of the downstream temperature and humidity sensor, the parameter information of the upstream temperature and humidity sensor and the first control information of the electric flow regulating valve.
Preferably, said module M4 comprises:
module M4.1: after the intake air cooling unit is put into operation, the intake air cooling control unit 8 performs PID adjustment according to the downstream temperature and humidity sensor 3, and increases/decreases the opening of the electric flow regulating valve 5 through a 4-20mA signal interface, so that the humidity of the downstream temperature and humidity sensor 3 is maintained at a preset value of 80%.
Preferably, the module M4 further includes:
module M4.2: when the downstream temperature and humidity sensor 3 has a humidity higher than the alarm value of 85%, the electric flow rate regulation valve 5 is forcibly closed, and the automatic/manual opening operation of the electric flow rate regulation valve 5 is blocked.
Preferably, the module M4 further includes:
module M4.1: when the upstream temperature/humidity sensor 4 has a humidity higher than 80%, the automatic/manual opening operation of the electric flow rate regulation valve 5 is blocked.
Preferably, the module M5 further includes:
module M5.1: when the opening of the electric flow regulating valve 5 is larger than 50%, and the humidity difference between the upstream temperature and humidity sensor 4 and the downstream temperature and humidity sensor 3 is smaller than 1%, acquiring inlet air cooling fault display information; the intake air cooling control unit 8 displays "intake air cooling failure".
Module M5.2: when the opening of the electric flow regulating valve 5 is smaller than 10% and the humidity of the downstream temperature and humidity sensor 3 is higher than the humidity of the upstream temperature and humidity sensor 4 by more than 3%, acquiring leakage display information of the intake air cooling valve; the intake air cooling control unit 8 displays "intake air cooling valve leakage".
Specifically, in one embodiment, a gas turbine inlet air cooling system with humidity control includes: the air filter house comprises an air filter house 1, a cooling coil module 2, a downstream temperature and humidity sensor 3, an upstream temperature and humidity sensor 4, an electric flow regulating valve 5, a cooling water inlet pipeline 6, a cooling water outlet pipeline 7 and an air inlet cooling control system 8.
The cooling coil module 2, the downstream temperature and humidity sensor 3 and the upstream temperature and humidity sensor 4 are installed inside the air filtering room 1, after outside air enters the air filtering room 1, the outside air is cooled through the cooling coil module 2, the downstream temperature and humidity sensor 3 is installed on the downstream of an air flow channel of the cooling coil module 2, and the upstream temperature and humidity sensor 4 is installed on the upstream of the air flow channel of the cooling coil module 2.
A cooling water inlet conduit 6 is installed before the inlet of the cooling coil module 2 and a cooling water outlet conduit 7 is installed after the outlet of the cooling coil module 2. An electric flow regulating valve 5 is installed on the cooling water inlet pipe 6 for regulating the flow of the cooling water in the cooling water inlet pipe 6.
The intake air cooling control system 8 adopts closed-loop control: after the air inlet cooling system is put into operation, the air inlet cooling control system 8 performs PID adjustment according to the downstream temperature and humidity sensor 3, increases/decreases the opening of the electric flow regulating valve 5 through a 4-20mA signal interface, and maintains the humidity of the downstream temperature and humidity sensor 3 at a preset value of 80%. When the downstream temperature and humidity sensor 3 has a humidity higher than the alarm value of 85%, the electric flow rate regulation valve 5 is forcibly closed, and the automatic/manual opening operation of the electric flow rate regulation valve 5 is blocked. When the upstream temperature/humidity sensor 4 has a humidity higher than 80%, the automatic/manual opening operation of the electric flow rate regulation valve 5 is blocked. The opening degree of the electric flow regulating valve 5 is larger than 50%, the humidity difference between the upstream temperature and humidity sensor 4 and the downstream temperature and humidity sensor 3 is smaller than 1%, and the air inlet cooling control system 8 displays an air inlet cooling fault. When the opening of the electric flow regulating valve 5 is less than 10%, and the humidity of the downstream temperature and humidity sensor 3 is higher than the humidity of the upstream temperature and humidity sensor 4 by more than 3%, the intake air cooling control system 8 displays "the intake air cooling valve is leaked".
Several typical conditions are shown in the following table, and the heat exchange and combustion engine performance are calculated, and the results are shown in the following table. The air humidity can be controlled by adjusting the flow of cooling water under the condition of higher environmental humidity, and the effect of effectively increasing the output of the combustion engine can be achieved by only using smaller cooling water amount, so that the best economy is obtained.
| Working condition 1 | Working condition 2 | |
|
|
|
|
| Ambient temperature | 25℃ | 25℃ | 31℃ | 31℃ | 35℃ | 35℃ |
| Assuming relative humidity | 50％ | 65％ | 50％ | 65％ | 50％ | 65％ |
| Temperature difference of cooling of inlet air | 4.9 |
3℃ | 6.1℃ | 3.5℃ | 6.8℃ | 3.5℃ |
| Increased output of combustion engine | 880kW | 530kW | 1280kW | 800kW | 2180kW | 1230kW |
| The cooling water quantity is 8 DEG C | 227m3/h | 41m3/h | 227m3/h | 41m3/h | 227m3/h | 32m3/h |
By adopting the closed-loop control structure of the intake air cooling control system 8, the invention can automatically match the most appropriate cooling capacity according to the environmental humidity, control the relative humidity of the air entering and passing through the filter element to be lower than 80 percent, and increase the output of the combustion engine in the most economic way. The problem of traditional air cooling in-process, economic nature is not good under the higher environment of relative humidity is solved.
Those skilled in the art will appreciate that, in addition to implementing the system and its various devices, units provided by the present invention as pure computer readable program code, the system and its various devices, units provided by the present invention can be fully enabled to implement the same functions by logically programming the method steps in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Therefore, the system and various devices, units and units thereof provided by the invention can be regarded as a hardware component, and the devices, units and units included in the system for realizing various functions can also be regarded as structures in the hardware component; means, elements, units for performing various functions may also be regarded as structures within both software and hardware components for performing the method.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (6)
1. A method of cooling gas turbine inlet air with humidity control, comprising:
step M1: installing a cooling coil unit (2), a downstream temperature and humidity sensor (3) and an upstream temperature and humidity sensor (4) in an air filtering room (1);
step M2: after entering the air filtering room (1), outside air is cooled by the cooling coil unit (2), the downstream temperature and humidity sensor (3) is installed at the downstream of the air flow channel of the cooling coil unit (2), and the upstream temperature and humidity sensor (4) is installed at the upstream of the air flow channel of the cooling coil unit (2);
step M3: installing a cooling water inlet pipeline (6) in front of an inlet of the cooling coil unit (2), and installing a cooling water outlet pipeline (7) behind an outlet of the cooling coil unit (2);
an electric flow regulating valve (5) is arranged on a cooling water inlet pipeline (6);
step M4: acquiring first control information of the electric flow regulating valve according to parameter information of a downstream temperature and humidity sensor;
acquiring second control information of the electric flow regulating valve according to the parameter information of the upstream temperature and humidity sensor;
step M5: acquiring display information of a cooling control unit according to parameter information of a downstream temperature and humidity sensor, parameter information of an upstream temperature and humidity sensor and first control information of an electric flow regulating valve;
the step M4 includes:
step M4.1: after the intake air cooling unit is put into operation, the intake air cooling control unit (8) performs PID adjustment according to the downstream temperature and humidity sensor (3), and the opening degree of the electric flow regulating valve (5) is increased/decreased through a 4-20mA signal interface, so that the humidity of the downstream temperature and humidity sensor (3) is maintained at a preset value;
the step M4 further includes:
step M4.2: when the humidity of the downstream temperature and humidity sensor (3) is higher than the alarm value, the electric flow control valve (5) is forcibly closed, and an automatic/manual opening operation of closing the electric flow control valve (5) is performed.
2. The method of cooling gas turbine engine intake air with humidity control as claimed in claim 1, wherein said step M4 further comprises:
step M4.1: when the humidity of the upstream temperature and humidity sensor (4) is higher than 80%, the automatic/manual opening operation of the blocking electric flow rate regulating valve (5) is performed.
3. The method of cooling gas turbine engine intake air with humidity control as claimed in claim 1, wherein said step M5 further comprises:
step M5.1: when the opening degree of the electric flow regulating valve (5) is larger than 50%, and the humidity difference between the upstream temperature and humidity sensor (4) and the downstream temperature and humidity sensor (3) is smaller than 1%, acquiring air inlet cooling fault display information;
step M5.2: and when the opening degree of the electric flow regulating valve (5) is less than 10%, and the humidity of the downstream temperature and humidity sensor (3) is higher than the humidity of the upstream temperature and humidity sensor (4) by more than 3%, acquiring leakage display information of the air intake cooling valve.
4. A gas turbine inlet air cooling system with humidity control, comprising:
module M1: installing a cooling coil unit (2), a downstream temperature and humidity sensor (3) and an upstream temperature and humidity sensor (4) in an air filtering room (1);
module M2: after entering the air filtering room (1), outside air is cooled by the cooling coil unit (2), the downstream temperature and humidity sensor (3) is installed at the downstream of the air flow channel of the cooling coil unit (2), and the upstream temperature and humidity sensor (4) is installed at the upstream of the air flow channel of the cooling coil unit (2);
module M3: installing a cooling water inlet pipeline (6) in front of an inlet of the cooling coil unit (2), and installing a cooling water outlet pipeline (7) behind an outlet of the cooling coil unit (2);
an electric flow regulating valve (5) is arranged on a cooling water inlet pipeline (6);
module M4: acquiring first control information of the electric flow regulating valve according to parameter information of a downstream temperature and humidity sensor;
acquiring second control information of the electric flow regulating valve according to the parameter information of the upstream temperature and humidity sensor;
module M5: acquiring display information of a cooling control unit according to parameter information of a downstream temperature and humidity sensor, parameter information of an upstream temperature and humidity sensor and first control information of an electric flow regulating valve;
the module M4 includes:
module M4.1: after the intake air cooling unit is put into operation, the intake air cooling control unit (8) performs PID adjustment according to the downstream temperature and humidity sensor (3), and the opening degree of the electric flow regulating valve (5) is increased/decreased through a 4-20mA signal interface, so that the humidity of the downstream temperature and humidity sensor (3) is maintained at a preset value;
the module M4 further includes:
module M4.2: when the humidity of the downstream temperature and humidity sensor (3) is higher than a set alarm value, the electric flow control valve (5) is forcibly closed, and automatic/manual opening operation for closing the electric flow control valve (5) is performed.
5. The gas turbine intake air cooling system with humidity control as claimed in claim 4, wherein said module M4 further comprises:
module M4.1: when the humidity of the upstream temperature and humidity sensor (4) is higher than 80%, the automatic/manual opening operation of the blocking electric flow rate regulating valve (5) is performed.
6. The gas turbine intake air cooling system with humidity control as claimed in claim 4, wherein said module M5 further comprises:
module M5.1: when the opening degree of the electric flow regulating valve (5) is larger than 50%, and the humidity difference between the upstream temperature and humidity sensor (4) and the downstream temperature and humidity sensor (3) is smaller than 1%, acquiring air inlet cooling fault display information;
module M5.2: and when the opening degree of the electric flow regulating valve (5) is less than 10%, and the humidity of the downstream temperature and humidity sensor (3) is higher than 3% of the humidity of the upstream temperature and humidity sensor (4), acquiring leakage display information of the air intake cooling valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010139903.3A CN111287851B (en) | 2020-03-03 | 2020-03-03 | Method and system for cooling inlet air of gas turbine with humidity control |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010139903.3A CN111287851B (en) | 2020-03-03 | 2020-03-03 | Method and system for cooling inlet air of gas turbine with humidity control |
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| Publication Number | Publication Date |
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| CN111287851A CN111287851A (en) | 2020-06-16 |
| CN111287851B true CN111287851B (en) | 2021-08-10 |
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| CN202010139903.3A Active CN111287851B (en) | 2020-03-03 | 2020-03-03 | Method and system for cooling inlet air of gas turbine with humidity control |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1198197A (en) * | 1995-08-24 | 1998-11-04 | 查里斯·R·科伦伯格 | Method and apparatus for cooling inlet air of gas turbine and internal combustion engine prime movers |
| CN101749117A (en) * | 2008-12-11 | 2010-06-23 | 通用电气公司 | Base load control of gas turbine realized by chilling modulation |
| CN209469494U (en) * | 2019-02-13 | 2019-10-08 | 国电环境保护研究院有限公司 | Gas turbine inlet air temperature control system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20180073386A1 (en) * | 2016-09-12 | 2018-03-15 | General Electric Company | System and method for condition-based monitoring of turbine filters |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1198197A (en) * | 1995-08-24 | 1998-11-04 | 查里斯·R·科伦伯格 | Method and apparatus for cooling inlet air of gas turbine and internal combustion engine prime movers |
| CN101749117A (en) * | 2008-12-11 | 2010-06-23 | 通用电气公司 | Base load control of gas turbine realized by chilling modulation |
| CN209469494U (en) * | 2019-02-13 | 2019-10-08 | 国电环境保护研究院有限公司 | Gas turbine inlet air temperature control system |
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| CN111287851A (en) | 2020-06-16 |
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