CN106593655A - Air turbo-starter air supplying system and control method - Google Patents
Air turbo-starter air supplying system and control method Download PDFInfo
- Publication number
- CN106593655A CN106593655A CN201611028474.2A CN201611028474A CN106593655A CN 106593655 A CN106593655 A CN 106593655A CN 201611028474 A CN201611028474 A CN 201611028474A CN 106593655 A CN106593655 A CN 106593655A
- Authority
- CN
- China
- Prior art keywords
- air
- starter
- magnetic valve
- valve
- pressure
- 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.)
- Granted
Links
Classifications
-
- 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
- F02C7/26—Starting; Ignition
- F02C7/268—Starting drives for the rotor, acting directly on the rotor of the gas turbine to be started
- F02C7/275—Mechanical drives
- F02C7/277—Mechanical drives the starter being a separate turbine
Abstract
An air turbo-starter air supplying system comprises an air inlet pipeline, one end of the air inlet pipeline is connected to an air tank, and the other end of the air inlet pipeline is divided into an air supply pipeline and an air exhaust pipeline. The air inlet pipeline is provided with a first electromagnetic valve, the rear end of the first electromagnetic valve is connected with a pressure regulating valve, and a second electromagnetic valve is arranged on the air supply pipeline. The tail end of the air supply pipeline is connected with a starter. A normally open electromagnetic valve is arranged between the starter and the second electromagnetic valve. The normally open electromagnetic valve and the second electromagnetic valve share the same control switch. A third electromagnetic valve is arranged on the air exhaust pipeline, and the tail end of the air exhaust pipeline is connected to an equivalent nozzle. When the second electromagnetic valve is opened, the normally open electromagnetic valve is closed, and air supplying of the air supply pipeline to the starter cannot be affected. When the second electromagnetic valve is blacked out and closed, the normally open electromagnetic valve is open, air in the air supply pipeline is exhausted, it is guaranteed that the inlet pressure of the starter is started is zero when the air turbo-starter air supplying system, and therefore the inlet pressure of the starter is reduced, the clutch breakage caused by high-pressure shock is avoided, and the maintenance cost for the air turbine starter is saved.
Description
Technical field
The present invention relates to aero-engine technology field, more particularly to a kind of air turbine starter air supply system and control
Method processed.
Background technology
Air turbine starter is one of starting device of aero-engine, is characterized in simple structure, lightweight, power
Greatly.Air turbine starter needs ground to provide the source of the gas of pressure stability, plant area compressed air (5kgf/cm when working2) pass through
Pipeline is stored into gas tank, prestart, is opened gas supply electromagnetic valve and is supplied to system, by pressure regulation valve regulation supply gas pressure, is started
When first open the magnetic valve of gas exhaust piping, air is discharged from equivalent nozzle.When the pressure before equivalent nozzle reaches setting (supply
Flow reaches regulation) and it is stable after, open the magnetic valve of supply air line, simultaneously close off gas exhaust piping magnetic valve, supply to starter
Gas.Starter band forwards motivation, completes the starting of engine.
Ideally, after terminating starting cycle, the compressed air in system stops suddenly flowing, the regulation of pressure regulator valve
Effect does not work, and the air pressure in pipeline can rise rapidly.But in actually used, starter has in itself a steam supply valve,
It is closed during defective starter motor, effect is to close to be supplied to the compressed air of starter.After completing to start, start
The steam supply valve of machine is closed, and now the magnetic valve on supply air line is also switched off, but 2～3s of time delay is wanted in the closing of supply air line magnetic valve
(characteristic of valve), so cause the pressure of compressed air in the pipeline between starter import and supply air line magnetic valve can go up
It is raised to about 5kgf/cm2(identical with original supply gas pressure), now pressure more than starter entrance air pressure 2.1kgf/cm2
Technological requirement.About 5kgf/cm when starting next time, after the steam supply valve opening inside starter in pipeline2Pressure-air is direct
Into starter, greater impact can be produced to the clutch of starter, accumulative rear starter clutch occurs damage.
Therefore, it is necessary to a kind of more preferable air supply system is designed, to solve the above problems.
The content of the invention
For the problem that prior art is present, the present invention provides a kind of reduction starter inlet pressure, it is to avoid impacting with high pressure
Cause the air turbine starter air supply system and control method of clutch damage.
To achieve these goals, the present invention is adopted the following technical scheme that：
A kind of air turbine starter air supply system, including air inlet pipeline, one end of the air inlet pipeline is connected to gas tank,
The other end is divided into supply air line and gas exhaust piping, and the air inlet pipeline is provided with the first magnetic valve, for controlling the air inlet pipe
The keying on road, the rear end of first magnetic valve is connected with pressure regulator valve, described for adjusting gas pressure on the air inlet pipeline
Supply air line is provided with the second magnetic valve, and for controlling the keying of the supply air line, the end of the supply air line is connected to
The starter, is provided with normally open solenoid valve between the starter and second magnetic valve, the normally open solenoid valve with it is described
Second magnetic valve shares same controlling switch, when second magnetic valve is opened, the normally open solenoid valve closure, and the exhaust
Pipeline is provided with the 3rd magnetic valve, and for controlling the keying of the gas exhaust piping, the end of the gas exhaust piping is connected to equivalent
Nozzle.
Further, gas-liquid separator and gas filtration are additionally provided with the rear end of first magnetic valve on the air inlet pipeline
Device.
Further, the side in front and back of the pressure regulator valve is respectively equipped with pressure tap, on the supply air line and the gas exhaust piping
It also is provided with pressure tap.
A kind of control method based on above-mentioned air turbine starter air supply system, including：
When starter is started, first magnetic valve, the pressure regulator valve and the 3rd magnetic valve are first opened, gas is by institute
Air inlet pipeline is stated into the gas exhaust piping, is discharged from the equivalent nozzle, until the pressure of the equivalent nozzle reaches regulation
After being worth and stablizing, the 3rd magnetic valve is closed, and open second magnetic valve, now the normally open solenoid valve closure, institute
State supply air line to connect to starter supply, the starter is started working；
After completing to start, the steam supply valve of the starter is closed, and open the 3rd magnetic valve, keep the equivalent spray
Mouth exhaust a period of time turns off, while second magnetic valve is closed for delayed several seconds after the 3rd magnetic valve opening, this
Shi Suoshu normally open solenoid valves disconnect, and the gas of the supply air line is discharged by the normally open solenoid valve so that the engine
Inlet pressure is zero.
Further, the time of the equivalent nozzle exhaust is more than lag time during second closed electromagnetic valve.
Further, the equivalent nozzle keeps exhaust 20～30 seconds.
Beneficial effects of the present invention：
Normally open solenoid valve is set between starter and the second magnetic valve, and normally open solenoid valve and the second magnetic valve are shared together
One controlling switch, when the second magnetic valve is opened, normally open solenoid valve closure does not interfere with supply air line and supplies for starter, when
When second magnetic valve power-off is closed, normally open solenoid valve is opened, and the gas on supply air line is discharged, it is ensured that started when next time starts
The inlet pressure of machine is zero, so as to reduce starter inlet pressure, it is to avoid impacting with high pressure causes clutch damage, saves air
The maintenance cost of turbo-starter.
Description of the drawings
Fig. 1 is the structural representation of air turbine starter air supply system of the present invention；
Fig. 2 is the supply gas pressure curve map that four pressure taps are determined respectively in Fig. 1；
In figure, 1-air inlet pipeline, the 2-the first magnetic valve, 3-gas-liquid separator, 4-pneumatic filter, 5-pressure regulator valve,
6-supply air line, 7-gas exhaust piping, the 8-the second magnetic valve, 9-normally open solenoid valve, 10-starter, the 11-the three electromagnetism
Valve, 12-equivalent nozzle, 13-pressure tap, 14-gas tank, I-system pressure, II-pressure regulation downstream pressure, III-equivalent nozzle
Front pressure, IV-starter inlet pressure.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment a part of embodiment only of the invention, rather than the embodiment of whole.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
Such as Fig. 1, a kind of air turbine starter air supply system of present invention offer, including air inlet pipeline 1, air inlet pipeline 1
One end is connected to gas tank 14, and gas tank 14 is used to store the compressed air that plant area's transmission comes, and pressure is about 5kgf/cm2, air inlet pipe
The other end on road 1 is divided into two pipelines, respectively supply air line 6 and gas exhaust piping 7, is sequentially provided with first on air inlet pipeline 1 electric
Magnet valve 2, gas-liquid separator 3, pneumatic filter 4 and pressure regulator valve 5, wherein the first magnetic valve 2 is used to control opening for air inlet pipeline 1
Close, so as to control the supply that air supply system is starter 10, pressure regulator valve 5 is used to adjust the gas pressure on air inlet pipeline 1, pressure regulation
Side is respectively equipped with pressure tap 13 before and after valve 5, for the gas pressure that pressure measuring device is tested on air inlet pipeline 1.
Supply air line 6 is provided with the second magnetic valve 8, and for controlling the keying of supply air line 6, the end of supply air line 6 connects
Starter 10 is connected to, is supplied by the road direction starter 10 of air supply pipe 6.One is arranged between the magnetic valve 8 of starter 10 and second often
Open electromagnetic valve 9, the magnetic valve 8 of normally open solenoid valve 9 and second shares same controlling switch, when the second magnetic valve 8 is opened, normally opened electricity
Magnet valve 9 is closed, and is not interfered with supply air line 6 and is supplied for starter 10, and when the second magnetic valve 8 is closed, normally open solenoid valve 9 breaks
Open, the gas on supply air line 6 is discharged by normally open solenoid valve 9, it is to avoid gases at high pressure continue the entrance of impulse starter 10, make
Into clutch damage.Pressure tap 13 also is provided with supply air line 6, for (starter 10 on pressure measuring device test supply air line 6
Entrance) gas pressure.
Gas exhaust piping 7 is provided with the 3rd magnetic valve 11, and for controlling the keying of gas exhaust piping 7, the end of gas exhaust piping 7 connects
Equivalent nozzle 12 is connected to, by the aperture for adjusting pressure regulator valve 5, the jet amount of equivalent nozzle 12 can be controlled.On gas exhaust piping 7
Pressure tap 13 is provided with, for pressure measuring device the gas pressure of (before equivalent nozzle 12) on gas exhaust piping 7 is tested.
The present invention also provides a kind of control method based on above-mentioned air turbine starter air supply system, specially：Start
When machine 10 is started, the first magnetic valve 2, the magnetic valve 11 of pressure regulator valve 5 and the 3rd are first opened, gas enters blast pipe by air inlet pipeline 1
Road 7, goes out from equivalent nozzle row 12, by the aperture for adjusting pressure regulator valve 5, controls the capacity of equivalent nozzle 12, equivalent nozzle 12
Persistently be vented, until the pressure of equivalent nozzle 12 reach setting and it is stable after, close the 3rd magnetic valve 11, and it is electric to open second
Magnet valve 8, now normally open solenoid valve 9 close, supply air line 6 is connected and supplied to starter 10, and starter 10 is started working.
After completing to start, the steam supply valve of starter 10 is closed, and open the 3rd magnetic valve 11, keep equivalent nozzle 12 to be vented
A period of time turns off, it is preferred that the lag time when time of the exhaust of equivalent nozzle 12 closes more than the second magnetic valve 8,
In the present embodiment, continue to keep equivalent nozzle 12 to deflate 20～30 seconds after the proceed-to-send of starter 10, by equivalent nozzle 12
Deflate, can be by the decrease in air pressure after pressure regulator valve 5 to 2kgf/cm2, before the steam supply valve of starter 10 is closed, supply air line 6
Pressure can just be reduced to, about 2kgf/cm identical with pressure after pressure regulator valve 52, meet the requirement of technological standards.While second
Magnetic valve 8 is closed for delayed several seconds after the opening of the 3rd magnetic valve 11, and now normally open solenoid valve 9 disconnects, the gas of supply air line 6 by
Normally open solenoid valve 9 is discharged so that the inlet pressure of engine 10 is reduced to zero, and in starting next time of engine 10 height is not resulted in
Pressure impact causes clutch damage, it is ensured that in the life-span of engine 10, save the maintenance cost of air turbine starter.
It is four pressure taps 13 are determined respectively in Fig. 1 supply gas pressure curve map such as Fig. 2, wherein I is system pressure, II
For pressure regulation downstream pressure, III is pressure before equivalent nozzle, and IV is starter inlet pressure, from figure 2 it can be seen that system is entered
Atmospheric pressure remains 5kgf/cm2Left and right, the substantially 2kgf/cm after the pressure regulation of pressure regulator valve 52Left and right, before this by exhaust
Pipeline 7 is deflated, then the pressure before equivalent nozzle 12 is by zero liter of a height of 2kgf/cm2Left and right, after its pressure stability, closes the 3rd electric
After magnet valve 11, the pressure before equivalent nozzle 12 is reduced to 0, and after the second magnetic valve 8 is opened, the inlet pressure of starter 10 is gradually by 0
It is increased to 2kgf/cm2, the gas supply of steady pressure is kept, after proceed-to-send, the 3rd magnetic valve 11 is then turned on, and close
Second magnetic valve 8, because the second magnetic valve 8 is closed for delayed several seconds, while deflating at normally open solenoid valve 9 so that starter 10 enters
Mouth pressure is gradually reduced to 0, the entrance no pressure impact when starting next time.After 3rd magnetic valve 11 opens a period of time (30s)
Close, pressure is also gradually reduced to 0 before equivalent nozzle 12.Can be seen that by above-mentioned supply gas pressure curve, the air supply system of the present invention
The technological requirement that starter 10 is started is disclosure satisfy that, and does not result in impacting with high pressure starter 10, improve making for starter 10
Use the life-span.
Above example is only unrestricted to illustrate technical scheme, although with reference to preferred embodiment to this
It is bright to be described in detail, it will be appreciated by those skilled in the art that can modify to technical scheme or wait
With replacing, without deviating from the objective and scope of the technical program, it all should cover in scope of the presently claimed invention.
Claims (6)
1. a kind of air turbine starter air supply system, it is characterised in that include：Air inlet pipeline, one end of the air inlet pipeline
Gas tank is connected to, the other end is divided into supply air line and gas exhaust piping, and the air inlet pipeline is provided with the first magnetic valve, for controlling
The keying of the air inlet pipeline, the rear end of first magnetic valve is connected with pressure regulator valve, for adjusting gas on the air inlet pipeline
Body pressure, the supply air line is provided with the second magnetic valve, for controlling the keying of the supply air line, the supply air line
End is connected to the starter, and normally open solenoid valve, the normally opened electricity are provided between the starter and second magnetic valve
Magnet valve shares same controlling switch with second magnetic valve, and when second magnetic valve is opened, the normally open solenoid valve is closed
Close, the gas exhaust piping is provided with the 3rd magnetic valve, for controlling the keying of the gas exhaust piping, the end of the gas exhaust piping
It is connected to equivalent nozzle.
2. air turbine starter air supply system according to claim 1, it is characterised in that：In institute on the air inlet pipeline
The rear end for stating the first magnetic valve is additionally provided with gas-liquid separator and pneumatic filter.
3. air turbine starter air supply system according to claim 1, it is characterised in that：Side before and after the pressure regulator valve
Pressure tap is respectively equipped with, on the supply air line and the gas exhaust piping pressure tap also is provided with.
4. a kind of control method of the air turbine starter air supply system based on described in claim 1, it is characterised in that bag
Include：
When starter is started, first open first magnetic valve, the pressure regulator valve and the 3rd magnetic valve, gas by it is described enter
Air pipe enters the gas exhaust piping, discharges from the equivalent nozzle, until the pressure of the equivalent nozzle reaches setting simultaneously
After stable, the 3rd magnetic valve is closed, and open second magnetic valve, now the normally open solenoid valve closure, the confession
Air pipe is connected to starter supply, and the starter is started working；
After completing to start, the steam supply valve of the starter is closed, and open the 3rd magnetic valve, keep the equivalent nozzle row
Gas is turned off for a period of time, while second magnetic valve is closed for delayed several seconds after the 3rd magnetic valve opening, now institute
Normally open solenoid valve disconnection is stated, the gas of the supply air line is discharged by the normally open solenoid valve so that the import of the engine
Pressure is zero.
5. control method according to claim 4, it is characterised in that：The time of equivalent nozzle exhaust is more than described the
Lag time during two closed electromagnetic valves.
6. control method according to claim 5, it is characterised in that：The equivalent nozzle keeps exhaust 20～30 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611028474.2A CN106593655B (en) | 2016-11-22 | 2016-11-22 | Air turbine starter air supply system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611028474.2A CN106593655B (en) | 2016-11-22 | 2016-11-22 | Air turbine starter air supply system and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106593655A true CN106593655A (en) | 2017-04-26 |
| CN106593655B CN106593655B (en) | 2018-07-31 |
Family
ID=58591514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611028474.2A Active CN106593655B (en) | 2016-11-22 | 2016-11-22 | Air turbine starter air supply system and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106593655B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091161A (en) * | 2017-05-17 | 2017-08-25 | 上海空间推进研究所 | The gasifier section of military aircraft |
| CN108035810A (en) * | 2017-11-06 | 2018-05-15 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Pressure-regulating device before a kind of air turbine starter stage of turbine |
| CN112796891A (en) * | 2021-02-26 | 2021-05-14 | 中国电子科技集团公司第五十八研究所 | Application of air source segment PID (proportion integration differentiation) adjusting method based on ATS (air turbine starter) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1032694A (en) * | 1988-05-30 | 1989-05-03 | 李明 | Pneumatic starter |
| US5752383A (en) * | 1996-11-14 | 1998-05-19 | Alliedsignal Inc. | Air turbine flow restrictor |
| US20050265823A1 (en) * | 2004-05-27 | 2005-12-01 | Wiggins Jimmy D | Pneumatic valve control having improved opening characteristics and an air turbine starter incorporating the same |
| CN101586490A (en) * | 2009-06-19 | 2009-11-25 | 中国重汽集团济南动力有限公司 | Supercharging device of engine |
| US20100085676A1 (en) * | 2008-10-03 | 2010-04-08 | Honeywell International Inc. | Nested pulse width modulation control |
| CN202180935U (en) * | 2011-06-29 | 2012-04-04 | 南京王行航空附件维修工程有限公司 | Comprehensive test bed for pneumatic accessories of airplanes |
| CN203837916U (en) * | 2014-05-16 | 2014-09-17 | 北京光徽德润航空技术有限公司 | Testing stand for air turbine starters |
| CN105402070A (en) * | 2015-12-14 | 2016-03-16 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Engagement and disengagement transmission device for air turbine starter |
-
2016
- 2016-11-22 CN CN201611028474.2A patent/CN106593655B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1032694A (en) * | 1988-05-30 | 1989-05-03 | 李明 | Pneumatic starter |
| US5752383A (en) * | 1996-11-14 | 1998-05-19 | Alliedsignal Inc. | Air turbine flow restrictor |
| US20050265823A1 (en) * | 2004-05-27 | 2005-12-01 | Wiggins Jimmy D | Pneumatic valve control having improved opening characteristics and an air turbine starter incorporating the same |
| US20100085676A1 (en) * | 2008-10-03 | 2010-04-08 | Honeywell International Inc. | Nested pulse width modulation control |
| CN101586490A (en) * | 2009-06-19 | 2009-11-25 | 中国重汽集团济南动力有限公司 | Supercharging device of engine |
| CN202180935U (en) * | 2011-06-29 | 2012-04-04 | 南京王行航空附件维修工程有限公司 | Comprehensive test bed for pneumatic accessories of airplanes |
| CN203837916U (en) * | 2014-05-16 | 2014-09-17 | 北京光徽德润航空技术有限公司 | Testing stand for air turbine starters |
| CN105402070A (en) * | 2015-12-14 | 2016-03-16 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Engagement and disengagement transmission device for air turbine starter |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091161A (en) * | 2017-05-17 | 2017-08-25 | 上海空间推进研究所 | The gasifier section of military aircraft |
| CN108035810A (en) * | 2017-11-06 | 2018-05-15 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Pressure-regulating device before a kind of air turbine starter stage of turbine |
| CN112796891A (en) * | 2021-02-26 | 2021-05-14 | 中国电子科技集团公司第五十八研究所 | Application of air source segment PID (proportion integration differentiation) adjusting method based on ATS (air turbine starter) |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106593655B (en) | 2018-07-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106593655A (en) | Air turbo-starter air supplying system and control method | |
| US4041695A (en) | Fuel system pneumatic purge apparatus and method | |
| US9441577B2 (en) | Pressure reducing system for fuel gas and natural gas dewaxing vehicle | |
| CN102505992B (en) | Out-of-operation oil seal test system of engine and control method thereof | |
| CN106170617A (en) | Pressure-regulating device for the air supply system of gas-turbine plant | |
| CN103148348B (en) | Electronic type CNG (Compressed Natural Gas) gas charging station sequence control panel | |
| WO2013001361A3 (en) | Apparatus and method for reducing air mass flow for extended range low emissions combustion for single shaft gas turbines | |
| CN107900772A (en) | A kind of lathe pneumatic door buffer unit | |
| CN105311977A (en) | Linkage-adjustment ejector | |
| KR101764434B1 (en) | Inert gas supply system for oil tanker | |
| JP2016075377A (en) | Intermittent air generating device | |
| CN102937050B (en) | High pressure air path system for stable combustion of vehicle gas turbine fuel oil | |
| CN209145736U (en) | Blowing adapter for cryogenic liquid engine | |
| CN207915103U (en) | A kind of lathe pneumatic door buffer unit | |
| CN219840724U (en) | Nitrogen purging system of dual-fuel system of medium-power gas turbine | |
| CN219976749U (en) | Hot-blast furnace air charging system | |
| CN206981972U (en) | A kind of automatic spraying device to prevent splash agent and include its CUT | |
| CN201428515Y (en) | Moving type engine flow path cleaning device | |
| CN106015000B (en) | Screw compressor system and its control method and control system and refrigeration plant | |
| CN104089181A (en) | Process pump pressure balancing device and control method of cut tobacco expansion line | |
| CN110529138B (en) | Ultrahigh-pressure water parallel pressure regulating system and method | |
| CN205652842U (en) | Malleation air conveying's jetting jar pressure relief device | |
| CN202991442U (en) | Throttling gear for boiler feed pump | |
| CN106837637A (en) | A kind of two-way oil-feed board-like electric-controlled fuel injector of minute hand valve opening with ditch | |
| CN116335834A (en) | Nitrogen purging method for dual-fuel system of medium-power gas turbine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |
|
| CP01 | Change in the name or title of a patent holder |