CN107121289A - 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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- CN107121289A CN107121289A CN201710266516.4A CN201710266516A CN107121289A CN 107121289 A CN107121289 A CN 107121289A CN 201710266516 A CN201710266516 A CN 201710266516A CN 107121289 A CN107121289 A CN 107121289A
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- 238000009434 installation Methods 0.000 claims 1
- 238000012360 testing method Methods 0.000 description 10
- 239000003921 oil Substances 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 6
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- 244000126211 Hericium coralloides Species 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000010687 lubricating oil Substances 0.000 description 5
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- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 206010020852 Hypertonia Diseases 0.000 description 1
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Classifications
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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
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- 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
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- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The present invention provides a kind of bearing bore of aero-engine high supercharging pressure level Fan Rig and obturages system, including Middle casing, Bearing Casing, rotary shaft, Middle casing is coordinated by Bearing Casing and rotary shaft to be installed, obturaged before being connected between Middle casing and rotary shaft ring and after obturage ring, this two obturage ring one end with Middle casing be connected, and two obturage the ring other end then with rotary shaft coordinate install, and rotary shaft and two is obturaged by comb toothing obturage 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 entirety obturage chamber, exhaust passage is additionally provided with Middle casing and the throttling arrangement of vent channel openings size is controlled, and the densification device between ring and Bearing Casing is obturaged in setting on the rotating shaft and before being located at.It is provided by the present invention to obturage system, it is ensured that testpieces is oil-proof in the case of high pressure ratio.
Description
Technical field
The invention belongs to aero-engine field, more particularly to aero-engine high supercharging pressure level Fan Rig field, tool
Body is related to a kind of bearing bore of aero-engine high supercharging pressure level Fan Rig and obturages system.
Background technology
Aero-engine is a kind of complicated and accurate engineering goods, with thrust is big, temperature is high, the spy 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
The intracavitary of one relative closure, to prevent the safe operation of whole engine of its effect of flood.This is typically required one and set meticulously
The bearing bore of meter obturages system to realize.But the thrust-weight ratio more and more higher of modern aeroengine, to the property such as pressure ratio of fan
Energy parameter proposes higher requirement.And the continuous rise of pressure ratio causes obturaging for rear fulcrum bearing bore to be increasingly difficult to reality
Existing, traditional to obturage system some have been unable to do what one wishes, the situation that oil leak occurs in process of the test is of common occurrence, and oil leak can cause to slide
Oilconsumption is big, and financial cost is improved, and threatens experiment safety.
Fan Rig is a kind of component-level performance test part of aero-engine, and its pressure ratio, rotating speed and operating mode need
The actual condition of aero-engine is simulated as far as possible, and therefore, its working environment is also very severe, obturages system to bearing bore same
Sample proposes the requirement of harshness.
As shown in figure 1, the traditional bearing chamber scheme of obturaging is：By the ground source of the gas of test-bed, draw one high pressure gas work
Use gas to obturage, through Fan Rig Middle casing reach Bearing Casing after, be divided into two branch roads, respectively forwardly latter two
Direction is flowed, and chamber is obturaged before and after reaching, so as to realize obturaging for bearing bore, prevents its internal lubrication leakage.But it is existing to obturage
Mode finds have lubricating oil to spill on testing stand, illustrates that bearing bore is obturaged system and failed when implementing.This is due to fan
The raising of pressure ratio, the system of obturaging of original design is not run normally, is obturaged gas and is occurred in that and pours in down a chimney, the actual stream of its air system
The scheme with initial designs runs in the opposite direction, therefore, and oil leak also just there occurs therewith.Moreover, occurring after oil leakage fault, people is tested
Member attempts to solve problem by the supply gas pressure of adjustment test bed upper ground surface source of the gas, but finds that It dones't help the situation.Illustrate original axle
Hold chamber obturage system controllability it is poor.After failure, the solution without scene, and the decomposition that can only leave office, set again
Meter.This can cause the test period to lengthen significantly, and either financial cost or time cost can all be dramatically increased.
The content of the invention
System is obturaged it is an object of the invention to provide a kind of bearing bore of aero-engine high supercharging pressure level Fan Rig,
Overcome or alleviated by least one drawbacks described above of prior art.
The purpose of the present invention is achieved through the following technical solutions：A kind of axle of aero-engine high supercharging pressure level Fan Rig
Hold chamber and obturage system, including Middle casing, Bearing Casing, rotary shaft, Middle casing is coordinated by Bearing Casing and rotary shaft pacifies
Formed between being formed between on the inside of dress, rotary shaft and Bearing Casing on the outside of bearing bore, rotary shaft and Bearing Casing high platen chamber and
Blind chamber, and high platen chamber and blind chamber split in Bearing Casing both sides, is obturaged before being disposed between bearing bore and high platen chamber
Chamber, chamber is obturaged after being disposed between bearing bore and blind chamber, is provided with Middle casing for leading to from the supply of external bleed air
Road, and the air supply channel is communicated to Bearing Casing, and the exhaust passage of guiding air-flow discharge is additionally provided with Middle casing, in
Obturaged before being connected between Jie's casing and rotary shaft ring and after obturage ring, two, which obturage ring, is placed in Bearing Casing both sides, two envelope
Yan Huan one end is connected with Middle casing, and two obturage the ring other end and then coordinate with rotary shaft and install, and pass through comb toothing
Obturage rotary shaft and obturage the gap of interannular with two, preceding ring of obturaging to separate high platen chamber and before obturage chamber, after obturage ring and be used 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 entirety obturage chamber；
The throttling arrangement of control vent channel openings size is additionally provided with Middle casing, and is set on the rotating shaft and positioned at preceding envelope
Densification device between Yan Huan and Bearing Casing, spills from obturaging chamber to prevent on-slip oil.
Preferably, the densification device is obturages ring, this obturage ring be arranged at it is described before obturage ring and the bearing machine
Between casket, wherein this, which is obturaged ring one end and the rotary shaft and coordinated, installs and obturages gap between the two by comb toothing, should
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 rotary shaft it
Between collectively constitute unloading cavity；The unloading channel communicated with unloading cavity is provided with Middle casing, the unloading channel is used to discharge
From the high platen chamber and the air-flow for obturaging chamber in unloading cavity.
Preferably, it is provided with and is filled for controlling the off-load of the unloading channel openings of sizes to throttle on the Middle casing
Put.
Preferably, the off-load throttling arrangement is blanking cover.
Preferably, the densification device is double-deck comb toothing, the double-deck comb toothing be arranged on it is described before obturage ring
Ring is obturaged close to the Bearing Casing side at the rotary shaft cooperation position, and before described.
Preferably, the throttling arrangement 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：Ensure 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 gratifying working condition；Second：Occurred in that partially when experiment
From the phenomenon of the failure of expected design, normal condition can be made it restore to by adjusting the associated control parameters of the system, so that
Ensure its it is interior in a big way can reliably good operation.
Brief description of the drawings
Fig. 1 obturages schematic diagram for the bearing bore of existing aero-engine high supercharging pressure level Fan Rig；
Fig. 2 is the 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 supply schematic cross-section of second of embodiment of the invention；
Fig. 7 is the partial enlarged drawing at I in Fig. 6；
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 blanking cover and the structural representation of exhaust throttle blanking cover in the present invention.
Reference：
Obturaged before the high platen chamber of 1- Middle casings, 2- Bearing Casings, 3- rotary shafts, 4- bearing bores, 5-, the blind chambers of 6-, 7- chamber,
Chamber, 9- air supply channels, 10- exhaust passages, the double-deck comb toothings of 13-, 14- are obturaged after 8- and obturages ring, 15- unloading cavities, 16- off-loads
Obturaged before passage, 17- and ring, 19- are obturaged after ring, 18- obturage chamber, 21- blanking covers, 23- exhaust throttle blanking covers.
Embodiment
To make the purpose, technical scheme and advantage of the invention implemented clearer, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme 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 represent same or similar element or the element with same or like function.Described embodiment is the present invention
A part of embodiment, rather than whole embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to uses
It is of the invention in explaining, and be not considered as limiting the invention.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
The bearing bore system of obturaging to the aero-engine high supercharging pressure level Fan Rig of the present invention is done below in conjunction with the accompanying drawings
It is further described.
As shown in figure 1, problem of the prior art root, i.e. failure mechanism, there is two by analysis.One is, high platen chamber 5
Hypertonia, the blind hypotony of chamber 6 (close to atmospheric pressure), this cause the system of obturaging be in a pressure it is unbalanced in the case of
Work, is easily caused oil and is spilt from low-pressure side.Two are, the pressure that chamber 7 obturages chamber 8 with after is obturaged before obturaging gas while ensureing with one
Power, causes two pressure for obturaging chamber to carry out passive distribution according to the flow resistance situation of structural member.And then obturaged after causing
Chamber 8 can not seal lubricating oil, cause lubrication leakage.
The solution of first problem, by setting densification device to solve, the technical scheme of densification device can use two kinds, plus
Unloading cavity 15 or double-deck comb toothing 13 throttle.Plus unloading cavity 15 is with seal structure to obturage ring 14 by increasing by one,
High platen chamber 5 is separated with before obturaging chamber 7, high pressure gas is led to after unloading cavity 15 air is discharged by Middle casing 1.So without
How high by fan pressure ratio, it produces influence all without on obturaging stream, and external air source pressure is without too high, to testing stand
It is required that smaller.Double-deck comb toothing 13 throttles then different, and it has lacked a part (obturaging ring 14), but many one layer of comb tooth envelopes
Tight structure, but this kind of scheme processing technology is complicated, and the requirement to testing stand is higher, needs supply gas pressure on sufficiently high platform.Such as,
If 3 atmospheric pressure of high 5 pressure of platen chamber, then bleed pressure is necessarily higher than this pressure, and unloading cavity scheme then need not, it
Bleed pressure can maintain less level, such as 1.3 atmospheric pressure.
The solution of Second Problem, is solved by improving air supply channel 9.Chamber UNICOM directly is obturaged by front and rear two, so also
It is that one obturages gas, so be all a pressure, and then can just avoids from principle spilling lubricating oil from obturaging chamber.But still deposit
The possibility of satisfactory state can not be transferred to, this just needs the pressure adjustable for obturaging gas outlet, namely the different chis of one group of increase simultaneously
Very little throttling arrangement, is placed on the position of the outlet of exhaust passage 10, and the area that the throttling arrangement is blocked then accordingly obturages chamber a bit greatly
Pressure will be improved, can be with arbitrary regulation on platform this makes it possible to ensure.There is the situation of envelope incessantly, can not decompose
With regard to solving the problem, job schedule will not be significantly influenceed.
Below by two embodiment explanations.
First, 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, rotary shaft 3, Middle casing 1 is coordinated by Bearing Casing 2 and rotary shaft 3 to be installed, and is turned
Bearing bore 4 is formed between moving axis 3 and the inner side of Bearing Casing 2, formed between rotary shaft 3 and the outside of Bearing Casing 2 high platen chamber 5 and
Blind chamber 6, and high platen chamber 5 and blind chamber 6 split in the both sides of Bearing Casing 2, is 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 with 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 rotary shaft 3
Tight ring 17 and after obturage ring 18, two, which obturage ring, is placed in the both sides of Bearing Casing 2, and two to obturage ring one end solid with Middle casing 1 for this
Even, and two obturage the ring other end and then coordinate with rotary shaft 3 and install, and rotary shaft 3 and two obturaged by comb toothing obturage interannular
Gap, preceding ring 17 of obturaging high platen chamber 5 and before obturages chamber 7 to separate, after obturage ring 18 and obturaged to separate blind chamber 6 with after
Chamber 8, it is preceding obturage chamber 7 and after obturage chamber 8 connected by air supply channel 9 to form entirety obturage chamber 19.And in intermediary
Being provided with to be additionally provided with the exhaust passage 10 that guiding air-flow is drawn, Middle casing 1 on casing 1 controls exhaust passage 10 to be open greatly
Small throttling arrangement, and then control the flow of gas circuit, the throttling arrangement prioritizing selection exhaust throttle blanking cover 23 (as shown in Figure 11).
Obturaged before in rotary shaft 3 and be provided with densification device between ring 17 and Bearing Casing 2, leaked to prevent on-slip oil from obturaging chamber 19
Go out.Densification device still selects to obturage ring 14, and this is obturaged before ring 14 is arranged at and obturaged between ring 17 and Bearing Casing 2, wherein obturaging
The one end of ring 14 and rotary shaft 3, which coordinate, to be installed and obturages gap between the two by comb toothing, obturage the other end of ring 14 then with axle
Hold casing 2 to be connected, obturage ring 14 and Middle casing 1, preceding obturage collectively constitute unloading cavity between ring 17 and rotary shaft 3 four
15, and the unloading channel 16 communicated with unloading cavity 15 is provided with Middle casing 1, the unloading channel 16 is used to discharge off-load
From high platen chamber 5 and the air-flow for obturaging chamber 19 in chamber 15, it is additionally provided with Middle casing 1 and controls the unloading channel 16 to be open
The off-load throttling arrangement of size, and then the flow of gas circuit is controlled, the off-load throttling arrangement prioritizing selection blanking cover 21 is shown in Figure 11.
2nd, principle explanation
The present embodiment has carried out labor for the existing system of obturaging, it is believed that it is high to cause to obturage unfavorable main cause
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, so as to obturage chamber 7 before ensureing
The pressure basis equalization of chamber 8 is obturaged with after.Meanwhile, in order to avoid its pressure is influenceed by the high high pressure gas of platen chamber 5, the present embodiment is again
Individually designed one is obturaged ring 14, and high pressure gas is arranged to air, the optimum state obturaged is reached.
It is to use external air source due to obturaging gas, therefore it is adjustable to obturage bleed air pressure.Meanwhile, it is additionally arranged one in unloading cavity 15
Locate the blanking cover 21 of different area and the exhaust throttle of different area at one is also additionally arranged at the logical atmospheric outlet for obturaging chamber 19
Blanking cover 23.If find to obturage pressure difference in process of the test it is undesirable, can be by adjusting external air source pressure and two blanking covers
Area adjusts the working condition of system, so as to reach satisfactorily obturages effect.
3rd, action relationships explanation
The present embodiment obturages gas circuit flow direction as shown in Figure 4 and Figure 5, the air-flow introduced from external air source, through supply
Passage 9 is guided to chamber 19 is obturaged, and now the air-flow is divided into two strands, and one air-flow (i.e. E gas circuits) is by obturaging ring 14 and rotary shaft 3
Between comb toothing flow to unloading cavity 15, and discharged by the unloading channel 16 communicated with unloading cavity 15, another gang of air-flow (i.e. F
Gas circuit) then discharged by the exhaust passage 10 communicated with obturaging chamber 19.
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 reduces the circulation area of blanking cover 21 and exhaust throttle blanking cover 23.Pass through the combination of both modes
Use, system can be made to recover normal, realization is well obturaged.If it is excessive to obturage pressure difference, Rule adjusting is on the contrary.
2nd, 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, rotary shaft 3, Middle casing 1 is coordinated by Bearing Casing 2 and rotary shaft 3 to be installed, and is turned
Bearing bore 4 is formed between moving axis 3 and the inner side of Bearing Casing 2, formed between rotary shaft 3 and the outside of Bearing Casing 2 high platen chamber 5 and
Blind chamber 6, and high platen chamber 5 and blind chamber 6 split in the both sides of Bearing Casing 2, is 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 with 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 rotary shaft 3
Tight ring 17 and after obturage ring 18, two, which obturage ring, is placed in the both sides of Bearing Casing 2, and two to obturage ring one end solid with Middle casing 1 for this
Even, and two obturage the ring other end and then coordinate with rotary shaft 3 and install, and rotary shaft 3 and two obturaged by comb toothing obturage interannular
Gap, preceding ring 17 of obturaging high platen chamber 5 and before obturages chamber 7 to separate, after obturage ring 18 and obturaged to separate blind chamber 6 with after
Chamber 8, it is preceding obturage chamber 7 and after obturage chamber 8 connected by air supply channel 9 to form entirety obturage chamber 19.And in intermediary
Being provided with to be additionally provided with the exhaust passage 10 that guiding air-flow is drawn, Middle casing 1 on casing 1 controls exhaust passage 10 to be open greatly
Small throttling arrangement, and then control the flow of gas circuit, the throttling arrangement prioritizing selection exhaust throttle blanking cover 23 (as shown in Figure 11).
As shown in fig. 7, the densification device is selected specifically to double-deck comb toothing 13, and ring 17 and rotary shaft 3 are obturaged before being disposed at
At cooperation position, the top of ring 17 is preceding being obturaged along the circle annular flange A of the direction of parallel rotational axes 3 setting two, two annular flange A
In preceding obturage the inner side side of ring 17 and keep a determining deviation, wherein close to the side of rotary shaft 3 annular flange A and before obturage ring 17
Top end face is set；One is set to enclose the annular flange B that cross section is L-shaped in rotary shaft 3, wherein annular flange B one end is hung down
Straight rotary shaft 3 is set, and the annular flange B other ends are then bent between two annular flange A so that obturage chamber 19 and high platen chamber 5
Between form a S-shaped clearance channel.Scribbled on the annular flange A for preceding obturaging the top end face of ring 17 and being connected with the end face
Coating, rotary shaft 3 is with respect to one layer of comb tooth is set at the coating, coating coordinates with the layer comb tooth constitutes first layer comb toothing；
Another annular flange A is also coated with coating close to the side of rotary shaft 3, and annular flange B bending parts at the coating with respect to being also provided with one
Layer comb tooth, coating coordinates with the layer comb tooth constitutes second layer comb toothing.
2nd, principle explanation
The present embodiment has carried out labor for the existing system of obturaging, it is believed that it is high to cause to obturage unfavorable main cause
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, so as to obturage chamber 7 before ensureing
The pressure basis equalization of chamber 8 is obturaged with after.Meanwhile, in order to avoid its pressure is influenceed by the high high pressure of platen chamber 5, the present embodiment exists
Before obturage double-deck comb toothing 13 devised 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 to use external air source due to obturaging gas, therefore it is adjustable to obturage bleed air pressure.Meanwhile, obturaging the logical air of chamber 19
Exit is also additionally arranged the exhaust throttle blanking cover 23 of different area at one.If in process of the test find obturage pressure difference do not meet will
Ask, the working condition of system can be adjusted by adjusting external air source pressure and the area of exhaust throttle blanking cover 23, so as to reach
Satisfactorily obturage effect.
3rd, action relationships explanation
The present embodiment obturages gas circuit flow direction as shown in Figure 9 and Figure 10, the air-flow introduced from external air source, through supply
Passage 9 is guided to chamber 19 is obturaged, and now the air-flow is divided into two strands, and one air-flow (i.e. K gas circuits) flows through left half obturaged in chamber 19
The part of chamber 7 (is obturaged) in side before original, and is discharged by the exhaust passage 10 communicated with obturaging chamber 19；Another strand of air-flow (i.e. H gas
Road) right half side (the obturaging the part of chamber 8 after original) obturaged in chamber 19 is flowed through, also by with obturaging the exhaust passage 10 that chamber 19 is communicated
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 reduces the circulation area of exhaust throttle blanking cover 23.By being applied in combination for both modes, it can make
System recovers normal, and realization is well obturaged.If it is excessive to obturage pressure difference, Rule adjusting is on the contrary.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, the change or replacement that can be readily occurred in, all should
It is included within the scope of the present invention.Therefore, protection scope of the present invention should using the scope of the claims as
It is accurate.
Claims (6)
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), rotary shaft (3), Middle casing (1) is coordinated by Bearing Casing (2) and rotary shaft (3) to be installed, rotary shaft (3) and bearing
Bearing bore (4) is formed between on the inside of casing (2), formed between rotary shaft (3) and Bearing Casing (2) outside high platen chamber (5) and
Blind chamber (6), and high platen chamber (5) and blind chamber (6) split in Bearing Casing (2) both sides, in bearing bore (4) and high platen chamber
(5) chamber (7) is obturaged before being disposed between, chamber (8) is obturaged after being disposed between bearing bore (4) and blind chamber (6), in Middle casing
(1) it is provided with 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 guiding air-flow discharge is additionally provided with Middle casing (1), it is characterised in that Middle casing (1) is with rotating
Obturaged before being connected between axle (3) ring (17) and after obturage ring (18), two, which obturage ring, is placed in Bearing Casing (2) both sides, and this two
Ring one end is obturaged to be connected with Middle casing (1), and two obturage the ring other end and then coordinate with rotary shaft (3) and install, and pass through
Comb toothing obturages rotary shaft (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 obturage 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 entirety obturage chamber (19)；Control exhaust passage is additionally provided with Middle casing (1)
(10) throttling arrangement of openings of sizes, and be arranged in rotary shaft (3) and obturaged before being located between ring (17) and Bearing Casing (2)
Densification device, spilt to prevent on-slip oil from obturaging chamber (19).
2. the bearing bore of aero-engine high supercharging pressure level Fan Rig according to claim 1 obturages system, its feature
Be, the densification device to obturage ring (14), this obturage ring (14) be arranged at it is described before obturage ring (17) and the bearing machine
Between casket (2), wherein this is obturaged ring (14) one end and coordinates installation with the rotary shaft (3) and obturaged between the two by comb toothing
Gap, this is obturaged ring (14) other end and is then connected with Bearing Casing (2), and this obturages ring (14) and the Middle casing (1), preceding
Obturage and unloading cavity (15) is collectively constituted between ring (17) and rotary shaft (3) four；It is provided with and unloads in Middle casing (1)
The unloading channel (16) that lotus chamber (15) is communicated, the unloading channel (16), which is used to discharge, comes from the high platen chamber in unloading cavity (15)
And the air-flow for obturaging chamber (19) (5).
3. the bearing bore of aero-engine high supercharging pressure level Fan Rig according to claim 2 obturages system, its feature
It is, the off-load throttling arrangement for controlling the unloading channel (16) openings of sizes is provided with the Middle casing (1).
4. the bearing bore of aero-engine high supercharging pressure level Fan Rig according to claim 3 obturages system, its feature
It is, the off-load throttling arrangement is blanking cover (21).
5. the bearing bore of aero-engine high supercharging pressure level Fan Rig according to claim 1 obturages system, its feature
Be, the densification device is double-deck comb toothing (13), the double-deck comb toothing (13) be arranged on it is described before obturage ring (17)
Ring (17) is obturaged close to the Bearing Casing (2) side at the rotary shaft (3) cooperation position, and before described.
6. the bearing bore of aero-engine high supercharging pressure level Fan Rig according to claim 1 obturages system, its feature
It is, the throttling arrangement is exhaust throttle blanking cover (23).
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| CN108918152A (en) * | 2018-05-18 | 2018-11-30 | 中国航发湖南动力机械研究所 | Aero Engine Testing device |
| CN109323866A (en) * | 2018-12-07 | 2019-02-12 | 中国航发沈阳发动机研究所 | Engine test separation bleed densification device |
| CN112161786A (en) * | 2020-09-18 | 2021-01-01 | 中国航发四川燃气涡轮研究院 | Test device for vortex reducer system of rotating disc cavity |
| CN112228382A (en) * | 2020-12-17 | 2021-01-15 | 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 |
| CN112576377A (en) * | 2020-12-07 | 2021-03-30 | 中国航发沈阳发动机研究所 | Aeroengine bearing seals bleed structure |
| CN113356944A (en) * | 2021-07-01 | 2021-09-07 | 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 |
| CN114876593A (en) * | 2022-07-06 | 2022-08-09 | 成都中科翼能科技有限公司 | Sealing structure for turbine rotor bearing cavity of core machine |
| CN116663157A (en) * | 2023-07-25 | 2023-08-29 | 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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| CN114876593A (en) * | 2022-07-06 | 2022-08-09 | 成都中科翼能科技有限公司 | Sealing structure for turbine rotor bearing cavity of core machine |
| CN116663157A (en) * | 2023-07-25 | 2023-08-29 | 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 |
| 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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