CN107121289B - A kind of bearing bore of aero-engine high supercharging pressure level Fan Rig obturages system - Google Patents
A kind of bearing bore of aero-engine high supercharging pressure level Fan Rig obturages system Download PDFInfo
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- CN107121289B CN107121289B CN201710266516.4A CN201710266516A CN107121289B CN 107121289 B CN107121289 B CN 107121289B CN 201710266516 A CN201710266516 A CN 201710266516A CN 107121289 B CN107121289 B CN 107121289B
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- chamber
- obturage
- ring
- casing
- obturages
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
Abstract
The bearing bore that the present invention provides a kind of aero-engine high supercharging pressure level Fan Rig obturages system, including Middle casing, Bearing Casing, rotation axis, Middle casing is coupled by Bearing Casing and rotation axis, obturaged before being connected between Middle casing and rotation axis ring and after obturage ring, this two obturage ring one end with Middle casing be connected, and two obturage the ring other end and are then coupled with rotation axis, and rotation axis and two is obturaged by comb toothing and obturages the gap of interannular, before obturage ring and high platen chamber and before obturage chamber to separate, after obturage ring to separate blind chamber with after obturage chamber, before obturage chamber and after obturage chamber connected by air supply channel to form an entirety obturage chamber, it is additionally provided with exhaust passage on Middle casing and controls the throttling set of vent channel openings size, and setting obturages ring on the rotating shaft and before being located at Densification device between Bearing Casing.Provided by the present invention to obturage system, guarantee test part is oil-proof in high pressure ratio.
Description
Technical field
The invention belongs to aero-engine field, in particular to aero-engine high supercharging pressure level Fan Rig field, tools
The bearing bore that body is related to a kind of aero-engine high supercharging pressure level Fan Rig obturages system.
Background technique
Aero-engine is a kind of complicated and accurate engineering goods, has that thrust is big, temperature is high, the spies such as highly reliable
Point.The bearing of aero-engine needs constantly to be sprayed to be lubricated and cool down with lubricating oil, and these lubricating oil must be limited in
One relative closure it is intracavitary, to prevent the safe operation of whole engine of its effect of flood.This is typically required one and sets meticulously
The bearing bore of meter obturages system to realize.But the thrust ratio of modern aeroengine is higher and higher, to the property such as pressure ratio of fan
More stringent requirements are proposed for energy parameter.And the continuous raising of pressure ratio is so that obturaging for rear fulcrum bearing bore is increasingly difficult to reality
Existing, traditional to obturage system some have been unable to do what one wishes, it is commonplace that there is a situation where oil leaks during test, and oil leak will cause cunning
Oilconsumption is big, and economic cost improves, and threatens test safety.
Fan Rig is a kind of component-level performance test part of aero-engine, and pressure ratio, revolving speed and operating condition need
The actual condition of aero-engine is simulated as far as possible, and therefore, working environment is also very badly, it is same to obturage system to bearing bore
Sample proposes harsh requirement.
As shown in Figure 1, traditional bearing chamber obturages scheme are as follows: by the ground gas source of test-bed, draw one high pressure gas work
For obturage use gas, across Fan Rig Middle casing reach Bearing Casing after, be divided into two branches, respectively forwardly latter two
Direction flowing reaches front and back and obturages chamber, thus realize obturaging for bearing bore, the lubrication leakage for preventing it internal.But it is existing to obturage
For mode when implementing, discovery has lubricating oil leakage on testing stand, illustrates that bearing bore obturages system and failed.This is because with fan
The system of obturaging of the raising of pressure ratio, original design does not operate normally, and obturages gas and occurs flowing backward, the practical flow path of air system
It runs in the opposite direction with the scheme of initial designs, therefore, oil leak also just has occurred therewith.Moreover, testing people after oil leakage fault occurs
Member attempts to solve the problems, such as by the supply gas pressure of adjustment test bed upper ground surface gas source, but finds that It dones't help the situation.Illustrate original axis
Hold chamber obturage system controllability it is poor.After failure, not live solution, and the decomposition that can only leave office, it sets again
Meter.This will lead to the test period and lengthens significantly, and either economic cost or time cost can all dramatically increase.
Summary of the invention
The purpose of the present invention is to provide a kind of bearing bores of aero-engine high supercharging pressure level Fan Rig to obturage system,
Overcome or alleviated by least one drawbacks described above of the prior art.
The purpose of the present invention is achieved through the following technical solutions: a kind of axis of aero-engine high supercharging pressure level Fan Rig
It holds chamber and obturages system, including Middle casing, Bearing Casing, rotation axis, Middle casing is pacified by Bearing Casing and rotation axis cooperation
Dress, on the inside of rotation axis and Bearing Casing between form bearing bore, on the outside of rotation axis and Bearing Casing between formed high platen chamber and
Blind chamber, and high platen chamber and blind chamber are split in Bearing Casing two sides, are obturaged before being disposed between bearing bore and high platen chamber
Chamber obturages chamber after being disposed between bearing bore and blind chamber, is provided in Middle casing for logical from the gas supply of external bleed air
Road, and the air supply channel is communicated to Bearing Casing, and the exhaust passage of guidance air-flow discharge is additionally provided on Middle casing, in
Obturaged before being connected between Jie's casing and rotation axis ring and after obturage ring, two, which obturage ring, is placed in Bearing Casing two sides, two envelope
The one end Yan Huan is connected with Middle casing, and two obturage the ring other end and are then coupled with rotation axis, and passes through comb toothing
Obturage rotation axis and obturage the gap of interannular with two, preceding ring of obturaging to separate high platen chamber and before obturage chamber, after obturage ring to
Separate blind chamber and obturage chamber with after, it is preceding obturage chamber and after obturage chamber connected by air supply channel to form an entirety obturage chamber；
The throttling set of control vent channel openings size, and setting are additionally provided on Middle casing on the rotating shaft and positioned at preceding envelope
Densification device between Yan Huanyu Bearing Casing leaks out to prevent on-slip oil from chamber is obturaged.
Preferably, the densification device be obturage ring, this obturage ring be set to it is described before obturage ring and the bearing machine
Between casket, wherein this obturages ring one end and the rotation axis is coupled and pass through comb toothing and obturages gap between the two, this
The ring other end is obturaged then to be connected with Bearing Casing, this obturage ring and the Middle casing, it is preceding obturage ring and rotation axis it
Between collectively constitute unloading cavity；The unloading channel communicated with unloading cavity is provided in Middle casing, the unloading channel is for being discharged
From the high platen chamber and the air-flow for obturaging chamber in unloading cavity.
Preferably, the off-load throttling dress for controlling the unloading channel openings of sizes is provided on the Middle casing
It sets.
Preferably, the off-load throttling set is blanking cover.
Preferably, the densification device is the double-deck comb toothing, and ring is obturaged in bilayer comb toothing setting before described
At the rotation axis cooperation position, and be located at it is described before obturage ring close to the Bearing Casing side.
Preferably, the throttling set is exhaust throttle blanking cover.
A kind of bearing bore of aero-engine high supercharging pressure level Fan Rig provided by the present invention obturages the beneficial of system
Effect is, first: guaranteeing under design point, the bearing bore system of obturaging of aerial engine fan testpieces can adapt to height
The requirement of pressure ratio, does not occur oil leakage phenomenon, to reach satisfactory working condition；Second: occurring partially when test
Phenomenon of the failure from expected design can make it restore to normal condition by adjusting the associated control parameters of this system, thus
Guarantee that it in a big way can reliable good operation.
Detailed description of the invention
Fig. 1 is that the bearing bore of existing aero-engine high supercharging pressure level Fan Rig obturages schematic diagram；
Fig. 2 is the gas supply schematic cross-section of the first embodiment of the invention；
Fig. 3 is the exhaust schematic cross-section of the first embodiment of the invention；
Fig. 4 is the feeding pneumatic flow schematic diagram of the first embodiment of the invention；
Fig. 5 is the exhaust gas circuit flow schematic diagram of the first embodiment of the invention；
Fig. 6 is the gas supply schematic cross-section of second of embodiment of the invention；
Fig. 7 is the partial enlarged view in Fig. 6 at I；
Fig. 8 is the exhaust schematic cross-section of second of embodiment of the invention；
Fig. 9 is the feeding pneumatic flow schematic diagram of second of embodiment of the invention；
Figure 10 is the exhaust gas circuit flow schematic diagram of second of embodiment of the invention；
Figure 11 is the structural schematic diagram of the blanking cover and exhaust throttle blanking cover in the present invention.
Appended drawing reference:
Obturaged before 1- Middle casing, 2- Bearing Casing, 3- rotation axis, 4- bearing bore, 5- high platen chamber, the blind chamber of 6-, 7- chamber,
Chamber, 9- air supply channel, 10- exhaust passage, 13- bilayer comb toothing, 14- are obturaged after 8- obturages ring, 15- unloading cavity, 16- off-load
It is obturaged before channel, 17- and obturages ring after ring, 18-, 19- obturages chamber, 21- blanking cover, 23- exhaust throttle blanking cover.
Specific embodiment
To keep the purposes, technical schemes and advantages of the invention implemented clearer, below in conjunction in the embodiment of the present invention
Attached drawing, technical solution in the embodiment of the present invention is further described in more detail.In the accompanying drawings, identical from beginning to end or class
As label indicate same or similar element or element with the same or similar functions.Described embodiment is the present invention
A part of the embodiment, instead of all the embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to use
It is of the invention in explaining, and be not considered as limiting the invention.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
The bearing bore system of obturaging of aero-engine high supercharging pressure level Fan Rig of the invention is done with reference to the accompanying drawing
It is further described.
As shown in Figure 1, problem of the prior art root, i.e. failure mechanism, by analysis there are two.First is that high platen chamber 5
Hypertonia, blind 6 hypotony of chamber (close to atmospheric pressure), this causes the system of obturaging to be in the unbalanced situation of pressure
Work is easy to cause oil to leak out from low-pressure side.Second is that obturage gas with one at the same obturage before ensureing chamber 7 and after obturage the pressure of chamber 8
Power causes two pressure for obturaging chamber that can only passively be distributed according to the flow resistance situation of structural member.And then it is obturaged after causing
Chamber 8 can not seal lubricating oil, cause lubrication leakage.
The solution of first problem is solved by setting densification device, and the technical solution of densification device can be used two kinds, add
Unloading cavity 15 or the double-deck comb toothing 13 throttle.Adding unloading cavity 15 is to obturage ring 14 with seal structure by increasing by one,
High platen chamber 5 is separated with chamber 7 is before obturaged, high pressure gas is led to after unloading cavity 15, atmosphere is discharged by Middle casing 1.Such nothing
It is how high by fan pressure ratio, will not all be had an impact to flow path is obturaged, and external air source pressure do not have to it is too high, to testing stand
It is required that smaller.The throttling of double-deck comb toothing 13 is then different, it has lacked a part (obturaging ring 14), but more one layer of comb tooth envelope
Tight structure, but this kind of scheme processing technology is complicated, to the more demanding of testing stand, needs supply gas pressure on sufficiently high platform.For example,
If 3 atmospheric pressure of high 5 pressure of platen chamber, bleed pressure is necessarily higher than this pressure, and unloading cavity scheme then need not, it
Bleed pressure can maintain lesser level, such as 1.3 atmospheric pressure.
The solution of Second Problem is solved by improving air supply channel 9.Chamber connection is directly obturaged into front and back two, so also
It is that one obturages gas, so be all a pressure, and then can be to avoid leaking out lubricating oil from obturaging chamber from principle.But it still deposits
In the possibility that cannot be transferred to satisfactory state, this just needs to obturage the pressure adjustable of gas outlet simultaneously, namely increases by one group of difference ruler
Very little throttling set is placed on the position of the outlet of exhaust passage 10, and the area which blocks is bigger then accordingly to obturage chamber
Pressure will improve, and this makes it possible to ensure arbitrary to adjust on platform.There is the case where envelope does not live, can not decompose
With regard to solving the problems, such as this, job schedule will not be substantially influenced.
Below by two embodiment explanations.
One, the first embodiment, as shown in Figures 2 to 5:
As shown in Figures 2 and 3, the bearing bore of the aero-engine high supercharging pressure level Fan Rig of the present embodiment, which is obturaged, is
System, including Middle casing 1, Bearing Casing 2, rotation axis 3, Middle casing 1 are coupled by Bearing Casing 2 with rotation axis 3, are turned
Bearing bore 4 is formed between moving axis 3 and the inside of Bearing Casing 2, formed between 2 outside of rotation axis 3 and Bearing Casing high platen chamber 5 and
Blind chamber 6, and high platen chamber 5 and blind chamber 6 are split in 2 two sides of Bearing Casing, are disposed between bearing bore 4 and high platen chamber 5
Before obturage chamber 7, obturage chamber 8 after being disposed between bearing bore 4 and blind chamber 6, be provided in Middle casing 1 for drawing from outside
The air supply channel 9 of gas, and the air supply channel 9 is communicated to Bearing Casing 2.Preceding envelope is connected between Middle casing 1 and rotation axis 3
Tight ring 17 and after obturage ring 18, two, which obturage ring, is placed in 2 two sides of Bearing Casing, and two to obturage ring one end solid with Middle casing 1 for this
Even, and two obturage the ring other end and are then coupled with rotation axis 3, and rotation axis 3 and two is obturaged by comb toothing and obturages interannular
Gap, preceding ring 17 of obturaging to separate high platen chamber 5 and before obturage chamber 7, after obturage ring 18 and obturaged with after to separate blind chamber 6
Chamber 8, it is preceding obturage chamber 7 and after obturage chamber 8 connected by air supply channel 9 to form an entirety obturage chamber 19.And in intermediary
It is provided with the exhaust passage 10 that guidance air-flow is drawn on casing 1, control exhaust passage 10 is additionally provided on Middle casing 1 and is open greatly
Small throttling set, and then the flow of gas circuit is controlled, which preferentially selects exhaust throttle blanking cover 23 (as shown in Figure 11).
It is obturaged before in rotation axis 3 and is provided with densification device between ring 17 and Bearing Casing 2, leaked to prevent on-slip oil from chamber 19 is obturaged
Out.Densification device still selects to obturage ring 14, this is obturaged before ring 14 is set to and obturages between ring 17 and Bearing Casing 2, wherein obturaging
14 one end of ring and rotation axis 3 are coupled and obturage gap between the two by comb toothing, obturage 14 other end of ring then with axis
It holds casing 2 to be connected, obturages ring 14 and Middle casing 1, preceding obturage collectively constitute unloading cavity between ring 17 and rotation axis 3 four
15, and the unloading channel 16 communicated with unloading cavity 15 is provided in Middle casing 1, the unloading channel 16 is for being discharged off-load
From high platen chamber 5 and the air-flow for obturaging chamber 19 in chamber 15, it is additionally provided on Middle casing 1 and controls the unloading channel 16 opening
The off-load throttling set of size, and then the flow of gas circuit is controlled, which preferentially selects blanking cover 21, sees Figure 11.
2, principle explanation
The present embodiment has carried out detailed analysis for the existing system of obturaging, it is believed that it is high for causing to obturage the main reason for unfavorable
It is inconsistent that platen chamber 5 and blind chamber 6 obturage back pressure, therefore, the present invention directly will preceding obturage chamber 7 and after obturage chamber 8 and get through to form one
What is connected obturages chamber 19, and be equipped with it is corresponding before obturage ring 17 and after obturage ring 18 and closed, to obturage chamber 7 before guaranteeing
8 pressure basis equalization of chamber is obturaged with after.Meanwhile in order to avoid its pressure is influenced by high 5 high pressure gas of platen chamber, the present embodiment is again
Individually designed one is obturaged ring 14, and high pressure gas is arranged Xiang great Qi, reaches the optimum state obturaged.
It is that it is adjustable to be obturaged using external air source for bleed air pressure due to obturaging gas.Meanwhile one is additionally arranged in unloading cavity 15
Locate the blanking cover 21 of different area and is also additionally arranged the exhaust throttle of different area at one at the logical atmospheric outlet for obturaging chamber 19
Blanking cover 23.If it is undesirable to obturage pressure difference for discovery during test, it can pass through and adjust external air source pressure and two blanking covers
Area adjusts the working condition of system, satisfactorily obturages effect to reach.
3, action relationships explanation
The present embodiment obturages the air-flow that gas circuit flow direction is as shown in Figure 4 and Figure 5, introduces from external air source, through supplying
Channel 9 is guided to chamber 19 is obturaged, and the air-flow is divided into two strands at this time, one air-flow (i.e. E gas circuit) is by obturaging ring 14 and rotation axis 3
Between comb toothing flow to unloading cavity 15, and the unloading channel 16 by communicating with unloading cavity 15 is discharged, another gang of air-flow (i.e. F
Gas circuit) then by with obturage the exhaust passage 10 that chamber 19 communicates and be discharged.
Testing ground need to monitor obturage chamber 19 and bearing bore 4 obturage pressure difference.If it is too small to obturage pressure difference, first choice is adjusted
High external air source pressure, secondary choosing reduce the circulation area of blanking cover 21 and exhaust throttle blanking cover 23.Pass through the combination of both modes
It uses, system can be made to restore normal, realization is well obturaged.If it is excessive to obturage pressure difference, Rule adjusting is on the contrary.
Two, second of embodiment, as shown in Fig. 6 to Figure 10:
As shown in Figure 6 and Figure 8, the bearing bore of the aero-engine high supercharging pressure level Fan Rig of the present embodiment, which is obturaged, is
System, including Middle casing 1, Bearing Casing 2, rotation axis 3, Middle casing 1 are coupled by Bearing Casing 2 with rotation axis 3, are turned
Bearing bore 4 is formed between moving axis 3 and the inside of Bearing Casing 2, formed between 2 outside of rotation axis 3 and Bearing Casing high platen chamber 5 and
Blind chamber 6, and high platen chamber 5 and blind chamber 6 are split in 2 two sides of Bearing Casing, are disposed between bearing bore 4 and high platen chamber 5
Before obturage chamber 7, obturage chamber 8 after being disposed between bearing bore 4 and blind chamber 6, be provided in Middle casing 1 for drawing from outside
The air supply channel 9 of gas, and the air supply channel 9 is communicated to Bearing Casing 2.Preceding envelope is connected between Middle casing 1 and rotation axis 3
Tight ring 17 and after obturage ring 18, two, which obturage ring, is placed in 2 two sides of Bearing Casing, and two to obturage ring one end solid with Middle casing 1 for this
Even, and two obturage the ring other end and are then coupled with rotation axis 3, and rotation axis 3 and two is obturaged by comb toothing and obturages interannular
Gap, preceding ring 17 of obturaging to separate high platen chamber 5 and before obturage chamber 7, after obturage ring 18 and obturaged with after to separate blind chamber 6
Chamber 8, it is preceding obturage chamber 7 and after obturage chamber 8 connected by air supply channel 9 to form an entirety obturage chamber 19.And in intermediary
It is provided with the exhaust passage 10 that guidance air-flow is drawn on casing 1, control exhaust passage 10 is additionally provided on Middle casing 1 and is open greatly
Small throttling set, and then the flow of gas circuit is controlled, which preferentially selects exhaust throttle blanking cover 23 (as shown in Figure 11).
As shown in fig. 7, the densification device is selected specifically to the double-deck comb toothing 13, and ring 17 and rotation axis 3 are obturaged before being disposed at
At cooperation position, the top of ring 17 is preceding being obturaged along 3 direction of parallel rotational axes setting, the two first annular flanges of circle, this is two first annular
Flange obturaged before being located at 17 inside side of ring and keep a fixed spacing, wherein close to 3 side of rotation axis first annular flange with
Before obturage 17 top end surface of ring and flush setting；It is L-shaped second annular flange in one circle cross section of the setting of rotation axis 3, wherein the
Second ring flange one end vertical axis of rotation 3 is arranged, and the second annular flange other end is then bent between two first annular flanges, is made
It must obturage and form a S-shaped clearance channel between chamber 19 and high platen chamber 5.Preceding obturage 17 top end surface of ring and with the end face phase
Coating is coated on a first annular flange even, rotation axis 3 is matched with respect to one layer of comb tooth, coating are arranged at the coating with the layer comb tooth
It closes and constitutes first layer comb toothing；Coating, the second annular flange are also coated with close to 3 side of rotation axis in another first annular flange
Bending part constitutes second layer comb toothing with respect to one layer of comb tooth, coating and layer comb tooth cooperation is also provided at the coating.
2, principle explanation
The present embodiment has carried out detailed analysis for the existing system of obturaging, it is believed that it is high for causing to obturage the main reason for unfavorable
It is inconsistent that platen chamber 5 and blind chamber 6 obturage back pressure, therefore, the present invention directly will preceding obturage chamber 7 and after obturage chamber 8 and get through to form one
What is connected obturages chamber 19, and be equipped with it is corresponding before obturage ring 17 and after obturage ring 18 and closed, to obturage chamber 7 before guaranteeing
8 pressure basis equalization of chamber is obturaged with after.Meanwhile in order to avoid its pressure is influenced by high 5 high pressure of platen chamber, the present embodiment exists
Before obturage and devise the double-deck comb toothing 13 at ring 17, reduce pressure by increasing flow resistance, and then obturage before reducing bearing bore 19
Pressure difference reaches the optimum state obturaged.
It is that it is adjustable to be obturaged using external air source for bleed air pressure due to obturaging gas.Meanwhile in the logical atmosphere for obturaging chamber 19
Exit is also additionally arranged the exhaust throttle blanking cover 23 of different area at one.It is wanted if discovery is obturaged pressure difference and do not met during test
It asks, the working condition of system can be adjusted by adjusting external air source pressure and 23 area of exhaust throttle blanking cover, to reach
Satisfactorily obturage effect.
3, action relationships explanation
The present embodiment obturages the air-flow that gas circuit flow direction is as shown in Figure 9 and Figure 10, introduces from external air source, through supplying
Channel 9 is guided to chamber 19 is obturaged, and the air-flow is divided into two strands at this time, one air-flow (i.e. K gas circuit) flows through left half obturaged in chamber 19
Side (i.e. former before obturage 7 part of chamber), and by with obturage the exhaust passage 10 that chamber 19 communicates and be discharged；Another strand of air-flow (i.e. H gas
Road) flow through that the right side obturaged in chamber 19 is half side (i.e. former then obturage 8 part of chamber), also by with the exhaust passage 10 obturaging chamber 19 and communicate
Discharge.
Testing ground need to monitor obturage chamber 19 and bearing bore 4 obturage pressure difference.If it is too small to obturage pressure difference, first choice is adjusted
High external air source pressure, secondary choosing reduce the circulation area of exhaust throttle blanking cover 23.By being applied in combination for both modes, can make
System restores normal, and realization is well obturaged.If it is excessive to obturage pressure difference, Rule adjusting is on the contrary.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by those familiar with the art, all answers
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be with the scope of protection of the claims
It is quasi-.
Claims (5)
1. a kind of bearing bore of aero-engine high supercharging pressure level Fan Rig obturages system, including Middle casing (1), bearing machine
Casket (2), rotation axis (3), Middle casing (1) are coupled by Bearing Casing (2) with rotation axis (3), rotation axis (3) and bearing
Form bearing bore (4) between on the inside of casing (2), formed between rotation axis (3) and Bearing Casing (2) outside high platen chamber (5) and
Blind chamber (6), and high platen chamber (5) and blind chamber (6) are split in Bearing Casing (2) two sides, in bearing bore (4) and high platen chamber
(5) chamber (7) are obturaged before being disposed between, chamber (8) are obturaged after being disposed between bearing bore (4) and blind chamber (6), in Middle casing
(1) it is provided in for the air supply channel (9) from external bleed air, and the air supply channel (9) is communicated to Bearing Casing (2),
The exhaust passage (10) of guidance air-flow discharge is additionally provided on Middle casing (1), which is characterized in that Middle casing (1) and rotation
Obturaged before being connected between axis (3) ring (17) and after obturage ring (18), two, which obturage ring, is placed in Bearing Casing (2) two sides, this two
Ring one end is obturaged to be connected with Middle casing (1), and two obturage the ring other end and are then coupled with rotation axis (3), and pass through
Comb toothing obturages rotation axis (3) and two and obturages the gap of interannular, and preceding ring (17) of obturaging is to separate high platen chamber (5) and preceding envelope
Tight chamber (7), after obturage ring (18) and obturaged chamber (8) with after to separate blind chamber (6), it is preceding obturage chamber (7) and after obturage chamber (8) and pass through
Air supply channel (9) connect to form an entirety obturage chamber (19)；Middle casing is additionally provided with control exhaust passage on (1)
(10) throttling set and densification device of openings of sizes, the densification device are the double-deck comb toothing (13), the bilayer comb tooth
Structure (13) setting is obturaged before described at ring (17) and the rotation axis (3) cooperation position, and be located at it is described before obturage ring
(17) it close to the Bearing Casing (2) side, is leaked out to prevent on-slip oil from chamber (19) are obturaged.
2. the bearing bore of aero-engine high supercharging pressure level Fan Rig according to claim 1 obturages system, feature
Be, the densification device be obturage ring (14), this obturage ring (14) be set to it is described before obturage ring (17) and the bearing machine
Between casket (2), wherein this obturages ring (14) one end and the rotation axis (3) are coupled and are obturaged between the two by comb toothing
Gap, this is obturaged ring (14) other end and is then connected with Bearing Casing (2), this obturages ring (14) and the Middle casing (1), preceding
It obturages and collectively constitutes unloading cavity (15) between ring (17) and rotation axis (3) four；It is provided with and unloads in Middle casing (1)
The unloading channel (16) that lotus chamber (15) communicates, the unloading channel (16) is for being discharged in unloading cavity (15) from the high platen chamber
(5) and the air-flow for obturaging chamber (19).
3. the bearing bore of aero-engine high supercharging pressure level Fan Rig according to claim 2 obturages system, feature
It is, the off-load throttling set for controlling the unloading channel (16) openings of sizes is provided on the Middle casing (1).
4. the bearing bore of aero-engine high supercharging pressure level Fan Rig according to claim 3 obturages system, feature
It is, the off-load throttling set is blanking cover (21).
5. the bearing bore of aero-engine high supercharging pressure level Fan Rig according to claim 1 obturages system, feature
It is, the throttling set is exhaust throttle blanking cover (23).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710266516.4A CN107121289B (en) | 2017-04-21 | 2017-04-21 | A kind of bearing bore of aero-engine high supercharging pressure level Fan Rig obturages system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710266516.4A CN107121289B (en) | 2017-04-21 | 2017-04-21 | A kind of bearing bore of aero-engine high supercharging pressure level Fan Rig obturages system |
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| CN107121289A CN107121289A (en) | 2017-09-01 |
| CN107121289B true CN107121289B (en) | 2019-04-23 |
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|---|---|---|---|---|
| CN108918152B (en) * | 2018-05-18 | 2020-10-23 | 中国航发湖南动力机械研究所 | Aeroengine test device |
| CN109323866B (en) * | 2018-12-07 | 2020-07-07 | 中国航发沈阳发动机研究所 | Separation bleed air sealing device for engine experiments |
| CN112161786B (en) * | 2020-09-18 | 2022-08-12 | 中国航发四川燃气涡轮研究院 | Test device for vortex reducer system of rotating disc cavity |
| CN112576377B (en) * | 2020-12-07 | 2022-04-01 | 中国航发沈阳发动机研究所 | Aeroengine bearing seals bleed structure |
| CN112228382B (en) * | 2020-12-17 | 2021-03-02 | 中国航发上海商用航空发动机制造有限责任公司 | Compressor performance test device |
| CN113356944B (en) * | 2021-07-01 | 2023-01-17 | 中国航发沈阳发动机研究所 | Double-wall plug-cover type bearing cavity oil and gas collecting and guiding structure suitable for aircraft engine |
| CN114876593B (en) * | 2022-07-06 | 2022-09-20 | 成都中科翼能科技有限公司 | Sealing structure for turbine rotor bearing cavity of core machine |
| CN116663157B (en) * | 2023-07-25 | 2023-10-03 | 中国航发四川燃气涡轮研究院 | Method for analyzing invalid air leakage of aero-engine and restraining device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2679366Y (en) * | 2004-03-16 | 2005-02-16 | 沈阳黎明航空发动机(集团)有限责任公司 | Dual-layer bar grate densification device |
| FR2925123A1 (en) * | 2007-12-14 | 2009-06-19 | Snecma Sa | SEALING OF BEARING SUPPORT FIXATION IN A TURBOMACHINE |
| CN201953484U (en) * | 2010-12-23 | 2011-08-31 | 中国航空工业集团公司沈阳发动机设计研究所 | Device for avoiding lubricating oil leaking through adopting labyrinth sealing structure |
| CN102384271A (en) * | 2011-11-01 | 2012-03-21 | 哈尔滨东安发动机（集团）有限公司 | Sealing structure |
| CN104500743B (en) * | 2014-12-15 | 2016-06-01 | 中国燃气涡轮研究院 | Tightness system between a kind of reversion axle |
| CN106285957B (en) * | 2016-09-13 | 2017-11-17 | 中国科学院工程热物理研究所 | Pre- seal structure |
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