CN202417716U - Inlet air heating system for gas turbine - Google Patents
Inlet air heating system for gas turbine Download PDFInfo
- Publication number
- CN202417716U CN202417716U CN2012200325103U CN201220032510U CN202417716U CN 202417716 U CN202417716 U CN 202417716U CN 2012200325103 U CN2012200325103 U CN 2012200325103U CN 201220032510 U CN201220032510 U CN 201220032510U CN 202417716 U CN202417716 U CN 202417716U
- Authority
- CN
- China
- Prior art keywords
- air intake
- water
- air
- heater
- gas turbine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
An inlet air heating system for a gas turbine comprises an inlet air heater (1) and a gas turbine air inlet system (3), and the heat medium for the inlet air heater (1) is water or water vapor. The inlet air heating system is characterized in that an air inlet bypass gate (2) and opening control equipment (4) thereof are mounted between the inlet air heater (1) and the gas turbine air inlet system (3). The inlet air heating system is for improving the heat efficiency and operational safety of the gas turbine and combined cycle thereof under low temperatures.
Description
Technical field
The utility model provides the system of a kind of heating gas turbine air inlet, the thermal efficiency when being used for improving gas turbine and combined cycle thereof and under microthermal climate, moving and the Security of operation.
Background technique
Some are installed in the gas turbine of northern area, and when moving under the cold wet weather situation the icing phenomenon of frosting of gas turbine inlet air system can take place to some extent winter, causes gas turbine inlet air system pressure reduction to raise.When pressure reduction is too high, can make gas turbine be difficult to continue operation.And cold wet weather also can make gas compressor inlet position (for example import adjustable vane) freeze winter, and ice cube comes off when freezing to certain thickness, can damage compressor blade, causes the accident.
For combustion turbine combined circulation, combined cycle generation efficient and ambient temperature have substantial connection.The most effective zone of combined cycle generation generally between 10 ℃～20 ℃, is installed in the combustion turbine combined circulation of north of china in winter cold area, and winter, cold snap during operation, can make the combined cycle generation decrease in efficiency down.
Gas turbine for band low nitrogen burning system; In order to enlarge low nitrogen burning system premixed combustion operating range, the combustion machine is equipped with air inlet heating system (IBH), and this system is through extracting the exhaust of part gas compressor out; Be transmitted back to compressor inlet, realize compressor air inlet machine is heated.Certainly, this air inlet heating system prevents the effect that compressor inlet freezes and restriction gas compressor pressure ratio transfinites in addition in the winter time.The air inlet heating system (IBH) that this employing gas compressor is bled increases power input to compressor, has reduced the generating efficiency of combustion machine.It is how much relevant with the aperture of the heat control valve of bleeding that efficient reduces, and aperture is big more, and it is many more that efficient reduces.In general be ambient temperature open low the time big, open when ambient temperature is high little or close.Therefore, for the combustion machine that is installed in the cold area in winter, the bleed generating efficiency of gas turbine of heating of band gas compressor obviously reduces during operation at part load.
There is following problems in utility model patent " gas turbine blower intake temperature controlling device " (patent No. ZL 200520033435.2):
Water or steam are as the external heat source of air inlet heating, and the subject matter of existence is: the one, there is not the air inlet bypass door, and be not easy to the adjusting of gas turbine and the protection of air intake heater; The 2nd, during winter operation, after the water inlet of air intake heater was cut off, the water meeting bursting by freezing air intake heater in heater pipe and the hydroecium made device damage; The 3rd, when regulating the temperature behind the air intake heater,, understand the bursting by freezing air intake heater equally if the water yield is not enough through regulating water-quantity.
Summary of the invention
The technical problem one that the utility model will solve is; The system of design one cover heating gas turbine air inlet; Air intake heater structure with install can guarantee to cut off the water supply in the winter time or the situation of water flow deficiency under; Can bleed off the water in the heater timely, prevent the water freezing bursting by freezing heater in the heater; The 2nd, guarantee that the air temperature field pattern after the air inlet heating is even.
At the gas turbine inlet air system upper reaches air intake heater is set, when ambient temperature is low, comes the air inlet of heating gas turbine with cooling water water outlet or other thermals source of turbine condenser.Establish a space between air intake heater and the gas turbine inlet air system, the air inlet bypass door is set on this enclosed space with the warming plate sealing.
Air intake heater must be considered two aspects: the one, winter cut off the water supply or the situation of circulating water flow quantity not sufficient under; When perhaps special circumstances need withdraw from the heater operation; If can not bleed off the water in the heater timely, can make the water freezing bursting by freezing heater in the heater.For preventing in particular cases to damage heater, air intake heater adopts vertical installation, can bleed off the water of heater (comprising pipe) the inside when needing very soon.The structure of air intake heater satisfies: after water inlet was cut off, the water in heater pipe and the hydroecium can be drained under action of gravity; The influent side of air intake heater and backwater side pipe line are equipped with the cut-off valve (if the backwater side is directly to enter water channel, can not adorn cut-off valve) of automatic control, and the influent side of air intake heater and backwater side are equipped with the self-draining arrangement after the into water cut-out; On the backwater side pipe line of air intake heater thermal switch is installed also; Its setting value X1 is than the slightly high several years of freezing point (for example 2 degrees centigrade) of water; When the return water temperature of air intake heater arrives setting value, the thermal switch action, signal passes to cut-off valve and self-draining arrangement; Cut off backwater, self-draining arrangement is opened.The 2nd, guarantee that the air temperature field pattern after the air inlet heating is even, the water side of air intake heater can be the single process structure, but air intake heater adopt at least before and after two arranged, the flow direction of a draining up, the flow direction of another draining is down; Or the water side of air intake heater is double-current journey structure at least, a flow process upwards, the another one flow process is downward.
Establish a space between air intake heater and the gas turbine inlet air system, the air inlet bypass door is set on this enclosed space with the warming plate sealing.The aperture of air inlet bypass door can adopt automatic control, with the air temperature signal in air intake heater downstream or other appropriate signals as control signal, the air temperature that the size of the aperture through the air inlet bypass door is regulated final entering gas turbine.The target temperature of regulating can be set between 10 ℃～20 ℃ in the most effective zone of combined cycle generation (each unit is not quite alike certainly).On the backwater side pipe line of air intake heater thermal switch is installed also; Its setting value X2 is than slightly high several years of X1 (for example 5 degrees centigrade), and when the return water temperature of air intake heater arrived setting value, thermal switch moved; Signal passes to the control apparatus of air inlet bypass door; The full admission bypass door makes the air quantity that flows through air intake heater very little, prevents the water freezing in the air intake heater.Certainly the air inlet bypass door also is the gas-entered passageway in summer, to reduce intake resistance.
The beneficial effect of the utility model is the air temperature of regulating final entering gas turbine through the size of the aperture of air inlet bypass door, is convenient to gas turbine and regulates; Under the situation that air intake heater is cut off the water supply in the winter time or water flow is not enough, can bleed off the water in the heater timely, prevent the water freezing bursting by freezing heater in the heater; Air temperature field pattern after the air inlet heating is even.
Description of drawings
Fig. 1 is the system diagram of the described embodiment 1 of the utility model.
Fig. 2 is the A-A view of Fig. 1.
Fig. 3 is the system diagram of the described embodiment 2 of the utility model.
Fig. 4 is the system diagram of the described embodiment 3 of the utility model.
Label declaration among the figure:
The 1-air intake heater, 2-air inlet bypass door, 3-gas turbine inlet air system, 4-aperture control apparatus, 5-L type three-way valve, 6-L type three-way valve, the automatic atmospheric valve of 7-.
Embodiment
Embodiment 1:
As shown in Figure 1, at the combustion machine air intake filter upper reaches air intake heater 1 is set, establish a space between air intake heater 1 and the gas turbine inlet air system 3 with the warming plate sealing, air inlet bypass door 2 is set on this enclosed space.
Air inlet bypass door 2 has aperture control apparatus 4, and as control signal, the size of the aperture through air inlet bypass door 2 is regulated the air temperature that gets into gas turbine inlet air system 3 with the air temperature signal that gets into gas turbine inlet air system 3.On the backwater side pipe line of air intake heater thermal switch is installed also; Its setting value X2 is than slightly high several years of X1 (for example 5 degrees centigrade), and when the return water temperature of air intake heater arrived setting value, thermal switch moved; Signal passes to the aperture control apparatus 4 of air inlet bypass door; Full admission bypass door 2 makes the air quantity that flows through air intake heater 1 very little, prevents the water freezing in the air intake heater.
Embodiment 2:
Difference as shown in Figure 3 and embodiment 1 is traditional thread binding electronic (perhaps electromagnetism, pneumatic) the L type three-way valve 6 of air intake heater 1 intake pipe, and air intake heater 1 backwater directly enters water channel, and return piping is not adorned valve.The B end of L type three-way valve 6 is connected with return piping.Heater water inlet when the A-C end is communicated with; The B-C end cuts off water inlet when being communicated with, and heater influent side and backwater side communicate, and bleeds off the water in the heater.
Embodiment 3:
The water side that difference as shown in Figure 4 and embodiment 1 is an air intake heater 1 is a single process, two arranged before and after adopting.Traditional thread binding electronic (perhaps electromagnetism, pneumatic) the L type three-way valve 6 of the intake pipe of air intake heater 1, the backwater of air intake heater 1 directly enters water channel, and return piping is not adorned valve.The B of L type three-way valve 6 holds and communicates with the external world.Heater water inlet when the A-C end is communicated with; Cut off water inlet when B-C end is communicated with, heater influent side and communicate with the external world bleeds off the water in the heater.
Claims (3)
1. the system of heating gas turbine air inlet; Comprise air intake heater (1), gas turbine inlet air system (3); The heat medium of air intake heater (1) is water or water vapor, it is characterized in that being equipped with between air intake heater (1) and the gas turbine inlet air system (3) air inlet bypass door (2) and aperture control apparatus (4) thereof.
2. the system of a kind of heating gas turbine according to claim 1 air inlet; It is characterized in that; Said air intake heater (1) adopts vertical installation; The structure of air intake heater (1) satisfies: after water inlet was cut off, the water in the heat exchanging tube of air intake heater (1) and the hydroecium can be drained under action of gravity; The influent side of air intake heater (1) and backwater side all have the drainage means after the into water cut-out.
3. the system of a kind of heating gas turbine according to claim 2 air inlet is characterized in that, the water side of said air intake heater (1) is double-current journey structure at least, and a flow process makes progress, and the another one flow process is downward; Or the water side of air intake heater (1) can be the single process structure, but air intake heater (1) adopt at least before and after two arranged, the flow direction of a draining up, the flow direction of another draining is down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200325103U CN202417716U (en) | 2012-01-11 | 2012-01-11 | Inlet air heating system for gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200325103U CN202417716U (en) | 2012-01-11 | 2012-01-11 | Inlet air heating system for gas turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202417716U true CN202417716U (en) | 2012-09-05 |
Family
ID=46742488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200325103U Expired - Fee Related CN202417716U (en) | 2012-01-11 | 2012-01-11 | Inlet air heating system for gas turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202417716U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047011A (en) * | 2012-01-14 | 2013-04-17 | 陈大兵 | System and method for heating inlet gas of gas turbine |
| CN104110308A (en) * | 2014-05-08 | 2014-10-22 | 中国联合工程公司 | Intake heating structure used for large gas turbine |
-
2012
- 2012-01-11 CN CN2012200325103U patent/CN202417716U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047011A (en) * | 2012-01-14 | 2013-04-17 | 陈大兵 | System and method for heating inlet gas of gas turbine |
| CN104110308A (en) * | 2014-05-08 | 2014-10-22 | 中国联合工程公司 | Intake heating structure used for large gas turbine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201531959U (en) | Heat recovery constant temperature and moisture air conditioning unit | |
| CN204027107U (en) | With the air-conditioning refrigeration system of hot-gas bypass | |
| CN102705939A (en) | Closed cooling tower refrigerating system applied to IDC (Internet Data Center) room and refrigerating method thereof | |
| CN103575006A (en) | Low-temperature refrigeration type air-cooling water chilling unit and control method thereof | |
| CN203177688U (en) | Efficient water ring vacuum pump system for condensing steam turbine unit | |
| CN104132474B (en) | Environment conditioning device for low-temperature laboratory | |
| CN102937312A (en) | Anti-freezing method for indirect evaporative water chilling unit capable of operating all year round and unit | |
| CN103335445B (en) | System and method for utilizing gas-driven compressor waste heat | |
| CN202417716U (en) | Inlet air heating system for gas turbine | |
| CN202442506U (en) | Anti-freezing device for fuel gas heater | |
| CN202024625U (en) | Indirect air cooling system capable of changing flow direction of cooling water | |
| CN102606885B (en) | Petroleum gas dewatering purifying equipment waste heat recovery heat tracing method | |
| CN202303879U (en) | Direct heating and circulating type heat pump hot water unit | |
| CN205619430U (en) | Air -conditioner | |
| CN103047011A (en) | System and method for heating inlet gas of gas turbine | |
| CN204254829U (en) | For the heat reclamation type hot blast unit of terminal | |
| CN203641890U (en) | Heating device of natural gas transportation and distribution pressure regulator | |
| CN207487058U (en) | The defroster of air conditioner fresh air unit | |
| CN204153919U (en) | A kind of fresh air heater defroster | |
| CN201043828Y (en) | Water heater air conditioner | |
| CN207893845U (en) | A kind of combination heating system of air energy heat pump and solar energy heat collector | |
| CN204388272U (en) | A kind of heat pipe air conditioner combination unit | |
| CN202747541U (en) | Fresh air handling unit anti-freezing device | |
| CN203163364U (en) | Fresh-air antifreeze energy-saving device | |
| CN202947231U (en) | Anti-freezing indirect evaporation water chilling unit capable of running in whole year |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINA PETROLEUM +. NATURAL GAS CO., LTD. Free format text: FORMER OWNER: CHEN DABING Effective date: 20131225 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 834000 KARAMAY, XINJIANG UYGUR AUTONOMOUS REGION TO: 100007 DONGCHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20131225 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee after: China Petroleum & Natural Gas Co., Ltd. Address before: 834000 the Xinjiang Uygur Autonomous Region Karamay HuiFu area A7 Building No. 13 Patentee before: Chen Dabing |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20150111 |
|
| EXPY | Termination of patent right or utility model |