CN108019281A - A kind of oil system of miniature gas turbine - Google Patents

A kind of oil system of miniature gas turbine Download PDF

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Publication number
CN108019281A
CN108019281A CN201711427832.1A CN201711427832A CN108019281A CN 108019281 A CN108019281 A CN 108019281A CN 201711427832 A CN201711427832 A CN 201711427832A CN 108019281 A CN108019281 A CN 108019281A
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CN
China
Prior art keywords
oil
lubricating oil
filter
transmission casing
deceleration transmission
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Granted
Application number
CN201711427832.1A
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Chinese (zh)
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CN108019281B (en
Inventor
徐泽鹏
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CAS Hefei Micro Gas Turbine Research Institute Co Ltd
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CAS Hefei Micro Gas Turbine Research Institute Co Ltd
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Priority to CN201711427832.1A priority Critical patent/CN108019281B/en
Publication of CN108019281A publication Critical patent/CN108019281A/en
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Publication of CN108019281B publication Critical patent/CN108019281B/en
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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
    • F02C7/06—Arrangements of bearings; Lubricating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0402—Cleaning of lubricants, e.g. filters or magnets
    • F16H57/0404—Lubricant filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
    • F16H57/0435—Pressure control for supplying lubricant; Circuits or valves therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
    • F16H57/0436—Pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/045—Lubricant storage reservoirs, e.g. reservoirs in addition to a gear sump for collecting lubricant in the upper part of a gear case
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0456—Lubrication by injection; Injection nozzles or tubes therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0458—Oil-mist or spray lubrication; Means to reduce foam formation
    • F16H57/046—Oil-mist or spray lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0467—Elements of gearings to be lubricated, cooled or heated
    • F16H57/0469—Bearings or seals
    • F16H57/0471—Bearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0467—Elements of gearings to be lubricated, cooled or heated
    • F16H57/0475—Engine and gearing, i.e. joint lubrication or cooling or heating thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0467—Elements of gearings to be lubricated, cooled or heated
    • F16H57/0479—Gears or bearings on planet carriers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/048—Type of gearings to be lubricated, cooled or heated
    • F16H57/0482—Gearings with gears having orbital motion
    • F16H57/0486—Gearings with gears having orbital motion with fixed gear ratio

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Details Of Gearings (AREA)

Abstract

The invention discloses a kind of oil system of miniature gas turbine, for for all kinds of frictions such as the axis, gear, bearing, central gear component and the output driven gear that are arranged in the planet speed reduction driving mechanism in deceleration transmission casing are secondary and rotor shaft bearings, the cleaning lubricating oil of authorized pressure and suitable temperature is provided, oil system has the characteristics that highly integrated, oil tank is located at below reduction case, it is compact-sized with casing integrally casting；Oil pump is single-stage oil pump, is built in reduction gear box, is directly driven by inner teeth wheel shaft, and lubricating oil disengaging is internal oil passages；System oil return is gravity oil return, lubricates the lubricating oil such as each gear, bearing and deposits to deceleration casing bottom disease and is back to oil tank by oilhole；Oil filter housing and reduction case integrated design, filter core use internal oil passages into fuel-displaced.

Description

A kind of oil system of miniature gas turbine
Technical field
The present invention relates to gas turbine technology field, especially, is related to a kind of oil system of miniature gas turbine.
Background technology
Miniature gas turbine is the small-sized Thermal Motor that a kind of newly-developed gets up, its single-machine capacity scope for 25~ 300kW, it is mainly made of compressor, combustion chamber, turbine, retarder and fuel system, oil system etc..Miniature gas turbine Generating set has the series of advantages such as high efficiency, low noise, low stain, small weight, small size and more integrated dilatations, its The national economy such as electric power, power field and national security etc. play an important roll and strategic importance.
In gas turbine or its generating set operational process, if without good lubrication, cooling effect, it can influence to fire The power and its service life of gas-turbine.Gas turbine needs supply to slide in normal work on the working surface such as bearing and gear Oil, may be constructed continuous oil film, and then reduce the frictionally damage between structure, while take away since friction and hot parts pass The heat come, to maintain parts to improve the service life of parts in normal operating temperature range.Therefore, Yi Taowen Fixed reliable oil system is most important for the steady reliability service and service life of gas turbine.
The content of the invention
For the drawbacks described above and deficiency of the prior art, the present invention provides a kind of oil system of miniature gas turbine, Main function of system is the secondary cleaning lubricating oil for providing authorized pressure and suitable temperature that respectively rubs for gas turbine, and oil system lubricates Axis, gear, bearing, central gear component and output driven gear inside speed reduction gearing, while go back lubricated rotor axis Bearing, oil system have the characteristics that it is highly integrated, when oil pressure is less than 40kPa, installed in deceleration transmission casing rear end face Lubricating oil low-voltage switch will force engine cut-off.
The present invention is that technical solution is used by solving its technical problem：
A kind of oil system of miniature gas turbine, for be arranged on the planetary reduction gear driver in deceleration transmission casing The secondary cleaning lubricating oil for providing authorized pressure and suitable temperature of all kinds of frictions in structure, the planet speed reduction driving mechanism are included at least One high speed central gear and some planetary gears being arranged on pinion frame, the high speed central gear are installed on one hollow turn The front end of sub- axis, it is characterised in that
The oil system includes being arranged on oil tank in deceleration transmission casing, oil pump, oil filter, oily filter bypass Valve, system safety valve, lubricating oil distribution ring, wherein,
The oil tank is arranged on the bottom of the deceleration transmission casing, and is integrally formed with the deceleration transmission casing；
The bottom of the oil pump sets oil inlet, and top sets oil outlet, and the oil inlet of its bottom passes through pipeline and institute Oil tank connection is stated, the oil outlet at the top of it passes through the oil pathway being arranged on deceleration transmission casing and the institute in portion disposed thereon State oil filter connection；
The oil filter includes housing and the filter core being arranged in housing, housing and the deceleration transmission machine of the oil filter Casket is integrally formed, and housing bottom is oil inlet, and top is filter core cap oil discharge passage, and bypass hole is set in housing sidewall, described The oily filter by-passing valve is set at by-pass prot, and the outlet of the oily filter by-passing valve is fuel-displaced logical with the filter core cap of oil filter case top Road connects, and during normal work, the oily filter by-passing valve is closed, and the filter core cap oil discharge passage from lubricating oil through filter core from top flows out Housing, when filter core blocks, the oily filter by-passing valve is opened, and lubricating oil is around filtration core by filter core cap oil discharge passage from filter core Flow directly out oil filter outside；
Lubricating oil is sequentially entered by the oil pathway being arranged on deceleration transmission casing after oil filter outflow and is arranged on institute The system safety valve and lubricating oil distribution ring on pinion frame are stated, wherein,
Axial a nozzle opening and some radial direction nozzle openings, some radial direction nozzle openings is set to draw in the lubricating oil distribution ring The oil site that slide guide oil spurts is engaged to the high speed central gear with each planetary gear, other teeth in planet speed reduction driving mechanism Bearing on wheel and gear shaft is then that the mist of oil for stirring out with central gear and planetary gear is lubricated；
The hollow rotor shafts include at its center and along its axially extending first passage and positioned at first passage The second channel of periphery, the axial nozzle opening guiding lubricating oil of the lubricating oil distribution ring end are sprayed to the high speed central gear Centre bore, flows to its rear end then along the first passage of the hollow rotor shafts, one is set on the inner wall of the first passage Part mist of oil, is blown into the spline junction of the hollow rotor shafts and high speed central gear by convex in annular using centrifugal force； The rear end of the first passage sets the radial hole of some connection second channels, and the lubricating oil of the first passage rear end passes through radially Hole enters second channel, then turns back along the second channel flow forward to the Roller Shaft positioned at the hollow rotor shafts front end Hold and thrust bearing, lubricating oil flow out after passing through the thrust bearing from oil scraper ring nut, the oil tank is flowed back under gravity.
Preferably, the system safety valve is arranged on the bleed off circuit of the lubricating oil pump discharge, when the oil pump When outlet oil pressure is excessive, part lubricating oil is leaked into the deceleration transmission casing and under the effect of gravity by the system safety valve The oil tank is flowed back to, most lubricating oil is flowed into the lubricating oil oil distributing ring.
Further, the system safety valve is a check valve, including housing, spring and installed in the pinion frame Internal sphere, the spring and sphere are used to the safe valve housing of system being maintained in pinion frame.
Preferably, the oil tank and deceleration transmission casing monoblock cast.
Further, between the oil tank and reduction gearing mechanism, one is set integrally to be cast with the deceleration transmission casing The oil baffle made, prevents the lubricating oil in the oil tank to be in contact with rotating reduction gearing mechanism, avoids producing foam.
Further, the oil tank bottom position sets a magnetic plug, by being threadably mounted on oil tank, and makes Sealed with sealing ring, the magnetic plug can adsorb the metal fillings in lubricating oil, the wear condition secondary for monitoring friction.
Preferably, a knob scale is installed, to indicate the pasta in oil tank on the deceleration transmission casing Highly, the knob scale is fixed using an integral rubber gasket, close when the puckered ring of scale rotates clockwise Packing is subject to compression to be adjacent to scale end face.
Preferably, the deceleration transmission casing rear end face sets a lubricating oil low-voltage to switch, when the oil pressure of oil system is less than During 40kPa, the lubricating oil low-voltage switch will force engine cut-off.
Preferably, a centrifugal oil-air separator is set at the top of the deceleration transmission casing, from compressor roller bearing Obturaging after air enters the transmission casing inside for side is mixed with the mist of oil in casing, through the centrifugal oil gas Separator carries out Oil-gas Separation, and unsegregated part oil gas drains into air from venting channels and causes lubricating oil to consume.
Compared with the existing technology, the oil system of miniature gas turbine of the invention, oil system lubrication deceleration transmission dress Axis, gear, bearing, central gear component and the output driven gear of inside are put, while goes back lubricated rotor axle bearing, lubricating oil system Uniting, it is highly integrated also to have the characteristics that, oil tank is located at below reduction case, compact-sized with casing integrally casting；Lubricating oil Pump as single-stage oil pump, be built in reduction gear box, directly driven by inner teeth wheel shaft, lubricating oil disengaging is internal oil passages；System Oil return is gravity oil return, lubricates the lubricating oil such as each gear, bearing and deposits to deceleration casing bottom disease and is back to oil tank by oilhole； Oil filter housing and reduction case integrated design, filter core uses internal oil passages into fuel-displaced, when oil pressure is less than 40kPa When, the lubricating oil low-voltage switch installed in deceleration transmission casing rear end face will force engine cut-off.
Brief description of the drawings
Fig. 1 is the structure diagram of the oil system of the miniature gas turbine of the present invention.
Embodiment
For the objects, technical solutions and advantages of the present invention are more clearly understood, develop simultaneously embodiment referring to the drawings, right The present invention is further described.It should be noted that the implementation for not illustrating or describing in attached drawing, is technical field In form known to a person of ordinary skill in the art.In addition, the direction term mentioned in following embodiments, for example, " on ", " under ", " preceding ", " rear ", "left", "right", " top ", " bottom " etc., are only the directions of refer to the attached drawing.Therefore, the direction term used is for illustrating simultaneously It is non-to be used for limiting the present invention.
As shown in Figure 1, the oil system of the miniature gas turbine of the present invention is built-in circulation stand-alone system, major function It is axis inside the speed reduction gearing for gas turbine, gear, bearing, central gear component, output driven gear and turns The secondary cleaning lubricating oil for providing authorized pressure and suitable temperature of all kinds of frictions such as sub- axle bearing, speed reduction gearing include deceleration transmission Casing and the planet speed reduction driving mechanism being arranged in deceleration transmission casing, planet speed reduction driving mechanism include at least one at a high speed Central gear and some planetary gears being arranged on pinion frame, the high speed central gear are installed on a hollow rotor shafts Front end.Whole oil system includes oil tank 1, oil pump 2, oil filter 3, the oily filter by-passing valve being arranged in deceleration transmission casing 4th, system safety valve 5, lubricating oil distribution ring 6.Oil tank 1 is arranged on the bottom of deceleration transmission casing, and with deceleration transmission casing one Body is formed；The bottom of oil pump 2 sets oil inlet, and top sets oil outlet, its oil inlet is connected by pipeline with oil tank 1, Its oil outlet is connected by the oil pathway being arranged on deceleration transmission casing with the oil filter 3 in portion disposed thereon.Oil filter 3 wraps Include housing and the filter core being arranged in housing, housing and the deceleration transmission casing of oil filter 3 are integrally formed, housing bottom be into Hydraulic fluid port, top are filter core cap oil discharge passage, and bypass hole is set in housing sidewall, and oily filter by-passing valve 4, oil are set at the by-pass prot The outlet of filter by-passing valve 4 is connected with the filter core cap oil discharge passage of 3 case top of oil filter, during normal work, from 3 housing of oil filter Filter core cap oil discharge passage of the lubricating oil that bottom enters through filter core from top flows out housing, once filter core blocks, such as when In 100~170kPa, oily filter by-passing valve 4 can be opened the lubricating oil pressure difference that oil filter 3 is imported and exported, and lubricating oil will pass through around filtration core Filter core cap oil discharge passage flows directly out oil filter 3 outside filter core.
Lubricating oil sequentially enters downstream after the outflow of oil filter 3 by the oil pathway being arranged on deceleration transmission casing System safety valve 5 and lubricating oil distribution ring 6.One axial nozzle opening and some radial direction nozzle openings are set in lubricating oil distribution ring 6, if described Trunk diameter sprays the oil site engaged to high speed central gear with each planetary gear to nozzle opening guiding lubricating oil.Planet speed reduction driving mechanism In other gears and gear shaft on bearing be then that the mist of oil for stirring out with central gear and planetary gear is lubricated.For The oil gas of hollow rotor shafts bearing lubrication is provided by being distributed in the axial nozzle opening of 6 end of lubricating oil distribution ring, sleeve rotor Axis includes at its center and divides along its axially extending first passage and the second channel positioned at first passage periphery, lubricating oil Axial nozzle opening guiding lubricating oil with 6 end of ring is sprayed to central gear centre bore, logical then along the first of hollow rotor shafts Road flows to the rear end of armature spindle.Convex in one annular is set on the inner wall of the first passage of armature spindle, by part mist of oil utilize from Mental and physical efforts are blown into the spline junction of armature spindle and central gear.The rear end of armature spindle first passage sets some connection second channels Radial hole, the lubricating oil of first passage rear end enters second channel by radial hole, then turns back along second channel flow forward To the roller bearing and thrust bearing positioned at hollow rotor shafts front end, lubricating oil is flowed out through thrust bearing from oil scraper ring nut, stream Return oil tank 1.
System safety valve 5 is arranged on the bleed off circuit of the outlet of oil pump 2, when the outlet oil pressure of oil pump 2 is excessive, meeting Deceleration transmission casing is leaked into from a part of lubricating oil of the outlet of oil pump 2 bypass and flows back to oil tank 1 under the effect of gravity, it is most Oil flow is to the lubricating oil oil distributing ring 6 inside planet carrier, so as to controlling oil system pressure in 100~450kPa scopes It is interior.System safety valve 5 is overflow valve common in this area, by a spring and the sphere inside pinion frame Composition, spring and sphere are maintained in planet carrier with the safe valve chest being bonded with planet carrier.
Oil tank 1 is the volume with about 5L with deceleration transmission casing monoblock cast.Can be with this guarantees lubricating oil There is the ventilation cycle of about 1 minute, so as to reduce lubricating oil foam to greatest extent.Under drive gear and oil tank 1 it Between, there is an oil baffle with deceleration transmission casing monoblock cast, prevent lubricating oil to be in contact with rotating gear, avoid producing Foam.Further, 1 bottom position of oil tank sets a magnetic plug 8, by being threadably mounted on oil tank 1, and using close Seal is sealed.Magnetic plug 8 can adsorb the metal fillings in lubricating oil, the wear condition secondary for monitoring friction.
It is possible to further be provided with a knob scale on deceleration transmission casing, to indicate in oil tank 1 Fuel head.The scale is fixed using an integral rubber gasket, when the puckered ring of scale rotates clockwise, gasket It is subject to compression to be adjacent to scale end face.
Filter core in 3 housing of oil filter is replaceable such as 10 microns of filter cores, and lubricating oil passes through filter core, along filter core end Drilled tunnel in lid enters the drilled tunnel of main lubricating oil system, is connected with system safety valve 5 on that channel.
Oily filter by-passing valve 4 is installed on end cover of filter element, oily filter by-passing valve 4 is check valve common in this area, such as Can be a spring-loaded ball-type oily filter by-passing valve, when filter core blocks, if the pressure difference at oily filter both ends reaches 140kPa, oily filter by-passing valve 4 are opened, and lubricating oil flows directly into gear and bearing around oily filter from bypass.
It is possible to further set a lubricating oil low-voltage to switch in deceleration transmission casing rear end face, when the oil pressure of oil system During less than 40kPa, lubricating oil low-voltage switch will force engine cut-off.
It is possible to further set centrifugal oil-air separator 7 at the top of deceleration transmission casing, oil gas is in gs-oil separator During internal flow, oil gas is separated by flowing the centrifugal force produced.Sky is obturaged from compressor roller bearing side Gas is entered behind reduction gear box inside mixed with the mist of oil in case after, carry out oil gas point through centrifugal oil-air separator 7 From unsegregated part oil gas drains into air from venting channels and causes lubricating oil to consume, in addition, the evaporation of lubricating oil will also result in one The lubricating oil consumption divided.
Oil system is not provided with single oil cooler, is flowed mainly by lubricating oil along casing wall, by wall and outside Boundary carries out heat exchange, reaches sliding oil cooled purpose.
Turbine oil system provided by the invention has the characteristics that highly integrated, and oil tank is located at deceleration transmission casing Lower section, it is compact-sized with casing integrally casting；Oil pump is single-stage oil pump, is built in speed reduction gearing, by internal gear Axis directly drives, and lubricating oil disengaging is internal oil passages；System oil return is gravity oil return, lubricates the lubricating oil such as each gear, bearing and sinks Product is back to oil tank to deceleration transmission casing bottom disease by oilhole.Oil filter housing and deceleration transmission casing integrated design, Filter core uses internal oil passages into fuel-displaced.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of its parts and components, be named Title etc. can be different.The equivalent or simple change that all construction, feature and principles according to described in inventional idea of the present invention are done, is wrapped Include in the protection domain of patent of the present invention.Those skilled in the art can be to described specific implementation Example is done various modifications or additions or is substituted in a similar way, without departing from structure of the invention or surmounts this Scope as defined in the claims, is within the scope of protection of the invention.

Claims (9)

  1. A kind of 1. oil system of miniature gas turbine, for lubricating the planetary reduction gear driver being arranged in deceleration transmission casing Structure, the planet speed reduction driving mechanism include an at least high speed central gear and some planets being arranged on pinion frame Wheel, the high speed central gear are installed on the front end of a hollow rotor shafts, it is characterised in that
    Oil tank that the oil system includes being arranged in deceleration transmission casing, oil pump, oil filter, oily filter by-passing valve, be System safety valve, lubricating oil distribution ring, wherein,
    The oil tank is arranged on the bottom of the deceleration transmission casing, and is integrally formed with the deceleration transmission casing；
    The bottom of the oil pump sets oil inlet, and top sets oil outlet, and the oil inlet of its bottom passes through pipeline and the cunning Fuel tank connects, and the oil outlet at the top of it passes through the oil pathway being arranged on deceleration transmission casing and the cunning in portion disposed thereon Oily filter connects；
    The oil filter includes housing and the filter core being arranged in housing, housing and the deceleration transmission casing one of the oil filter Body is formed, and housing bottom is oil inlet, and top is filter core cap oil discharge passage, and bypass hole, the bypass are set in housing sidewall The oily filter by-passing valve is set at hole, and the outlet of the oily filter by-passing valve connects with the filter core cap oil discharge passage of oil filter case top Logical, during normal work, the oily filter by-passing valve is closed, and the filter core cap oil discharge passage from lubricating oil through filter core from top flows out shell Body, when filter core blocks, the oily filter by-passing valve is opened, lubricating oil around filtration core by filter core cap oil discharge passage outside filter core Flow directly out oil filter；
    Lubricating oil is sequentially entered by the oil pathway being arranged on deceleration transmission casing after oil filter outflow and is arranged on the row System safety valve and lubricating oil distribution ring on gear rack, wherein,
    One axial nozzle opening and some radial direction nozzle openings are set in the lubricating oil distribution ring, and some radial direction nozzle opening guiding are slided The oil site that oil spurts is engaged to the high speed central gear with each planetary gear, other gears in planet speed reduction driving mechanism and Bearing on gear shaft is then that the mist of oil for stirring out with central gear and planetary gear is lubricated；
    The hollow rotor shafts include at its center and along its axially extending first passage and peripheral positioned at first passage Second channel, the lubricating oil distribution ring end axial nozzle opening guiding lubricating oil spray to the center of the high speed central gear Hole, flows to its rear end then along the first passage of the hollow rotor shafts, an annular is set on the inner wall of the first passage Part mist of oil, is blown into the spline junction of the hollow rotor shafts and high speed central gear by interior convex using centrifugal force；It is described The rear end of first passage sets the radial holes of some connection second channels, the lubricating oil of the first passage rear end by radial hole into Enter second channel, then turn back to the roller bearing positioned at the hollow rotor shafts front end along the second channel flow forward and Thrust bearing, lubricating oil flow out after passing through the thrust bearing from oil scraper ring nut, and the oil tank is flowed back under gravity.
  2. 2. oil system according to claim 1, it is characterised in that the system safety valve is arranged on the lubricating oil and pumps out On the bleed off circuit of mouth, when the outlet oil pressure of the oil pump is excessive, part lubricating oil leaks into institute by the system safety valve State in deceleration transmission casing and flow back to the oil tank under the effect of gravity, most lubricating oil flows into the lubricating oil oil distributing ring In.
  3. 3. oil system according to claim 2, it is characterised in that the system safety valve is a check valve, including shell Body, spring and the sphere inside the pinion frame, the spring and sphere are used for the safe valve housing of system It is maintained in pinion frame.
  4. 4. oil system according to claim 1, it is characterised in that the oil tank is integrally cast with deceleration transmission casing Make.
  5. 5. oil system according to claim 4, it is characterised in that between the oil tank and reduction gearing mechanism, if The oil baffle of one and the deceleration transmission casing monoblock cast are put, prevents the lubricating oil in the oil tank and rotating deceleration transmission Mechanism is in contact, and avoids producing foam.
  6. 6. oil system according to claim 4, it is characterised in that the oil tank bottom position sets a magnetism stifled Head, is sealed by being threadably mounted on oil tank, and using sealing ring, and the magnetic plug can adsorb the metal in lubricating oil Bits, the wear condition secondary for monitoring friction.
  7. 7. oil system according to claim 1 a, it is characterised in that knob is provided with the deceleration transmission casing Formula scale, to indicate the fuel head in oil tank, the knob scale is fixed using an integral rubber gasket, When the puckered ring of scale rotates clockwise, gasket is subject to compression to be adjacent to scale end face.
  8. 8. oil system according to claim 1, it is characterised in that the deceleration transmission casing rear end face sets a lubricating oil Low tension switch, when the oil pressure of oil system is less than 40kPa, the lubricating oil low-voltage switch will force engine cut-off.
  9. 9. oil system according to claim 1, it is characterised in that setting one is centrifugal at the top of the deceleration transmission casing Gs-oil separator, from compressor roller bearing side obturage air enter behind the transmission casing inside with casing Mist of oil is mixed, and carries out Oil-gas Separation through the centrifugal oil-air separator, unsegregated part oil gas is arranged from venting channels Lubricating oil is caused to consume to air.
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CN110285927A (en) * 2019-07-12 2019-09-27 中国航发常州兰翔机械有限责任公司 A kind of axial flow compressor leading portion static state oil seal experimental rig and test method
CN111379842A (en) * 2018-12-27 2020-07-07 中国航发商用航空发动机有限责任公司 Lubrication system and lubrication method
CN112360632A (en) * 2020-12-03 2021-02-12 上海电气燃气轮机有限公司 Oil scraper ring for gas turbine
CN113153533A (en) * 2021-04-15 2021-07-23 中国航发湖南动力机械研究所 Integrated aero-engine lubricating oil tank
CN113844660A (en) * 2021-10-09 2021-12-28 中国航发沈阳发动机研究所 Integrated accessory casing structure on airplane
CN115355089A (en) * 2022-07-29 2022-11-18 中科航星科技有限公司 Bearing oil mist lubrication cooling structure with axis oil supply
CN116561933A (en) * 2023-07-05 2023-08-08 北京航空航天大学 Method and system for analyzing oil gas flow state of bearing cavity in aero-engine

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CN1693748A (en) * 2004-04-29 2005-11-09 Snecma发动机公司 Device for lubricating component in assembly composed by multi-part
CN104169546A (en) * 2012-02-23 2014-11-26 斯奈克玛 Device for recovering lubricating oil from an epicyclic reduction gear
CN106461058A (en) * 2014-03-24 2017-02-22 赛峰飞机发动机公司 Transmission assembly including a transmission member and an oil distribution system

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Publication number Priority date Publication date Assignee Title
CN1693748A (en) * 2004-04-29 2005-11-09 Snecma发动机公司 Device for lubricating component in assembly composed by multi-part
CN104169546A (en) * 2012-02-23 2014-11-26 斯奈克玛 Device for recovering lubricating oil from an epicyclic reduction gear
CN106461058A (en) * 2014-03-24 2017-02-22 赛峰飞机发动机公司 Transmission assembly including a transmission member and an oil distribution system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111379842A (en) * 2018-12-27 2020-07-07 中国航发商用航空发动机有限责任公司 Lubrication system and lubrication method
CN110285927A (en) * 2019-07-12 2019-09-27 中国航发常州兰翔机械有限责任公司 A kind of axial flow compressor leading portion static state oil seal experimental rig and test method
CN112360632A (en) * 2020-12-03 2021-02-12 上海电气燃气轮机有限公司 Oil scraper ring for gas turbine
CN113153533A (en) * 2021-04-15 2021-07-23 中国航发湖南动力机械研究所 Integrated aero-engine lubricating oil tank
CN113844660A (en) * 2021-10-09 2021-12-28 中国航发沈阳发动机研究所 Integrated accessory casing structure on airplane
CN115355089A (en) * 2022-07-29 2022-11-18 中科航星科技有限公司 Bearing oil mist lubrication cooling structure with axis oil supply
CN116561933A (en) * 2023-07-05 2023-08-08 北京航空航天大学 Method and system for analyzing oil gas flow state of bearing cavity in aero-engine
CN116561933B (en) * 2023-07-05 2023-09-05 北京航空航天大学 Method and system for analyzing oil gas flow state of bearing cavity in aero-engine

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