CN110361136A - A kind of between centers seal tester - Google Patents
A kind of between centers seal tester Download PDFInfo
- Publication number
- CN110361136A CN110361136A CN201910656239.7A CN201910656239A CN110361136A CN 110361136 A CN110361136 A CN 110361136A CN 201910656239 A CN201910656239 A CN 201910656239A CN 110361136 A CN110361136 A CN 110361136A
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- centers
- support arm
- bearing
- rotating shaft
- shaft
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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
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/025—Details with respect to the testing of engines or engine parts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The application belongs to aerial engine sealing experimental technique field, it is related to a kind of between centers seal tester, including first rotating shaft and the second shaft, the end of first rotating shaft is connected with each other with second turn of the tip of the axis by bearing, first rotating shaft provides servo-actuated between centers and seals inner ring, second bearing provides servo-actuated between centers and seals outer ring, the setting of between centers leakage test part seals between inner ring and between centers sealing outer ring between centers, the bearing bore and compressed air cell of test are formed with second turn of shaft support by support first rotating shaft, port and gas outlet are driven into compressed air cell, between centers leakage test part performance is assessed by measurement air inlet and the gas flow of gas outlet.Present application addresses between centers sealings not to have special purpose test equipment problem, can complete the performance and reliability test task of between centers sealing.The case where between centers sealing can only be examined in engine complete machine is avoided, experimentation cost and empirical risk are reduced.
Description
Technical field
The application belongs to aerial engine sealing experimental technique field, in particular to a kind of between centers seal tester.
Background technique
Home and abroad is with being " more rotors " engine with the aero-engine in research and development, and wherein sealing is system between rotor
The about key technology of development of engine.The missing of aero-engine between centers seal tester causes between centers leakage test can not be into
Row.This makes new, new construction between centers sealing that can not carry out verification experimental verification, lacks test data support, greatly constrains
The development and application of between centers sealing.With the development of sealing profession, very there is an urgent need between centers seal testers.
Known seal tester is single axle construction, i.e. seal tester in axis, cannot carry out between centers leakage test
The verifying of project, existing between centers sealing can only be carried out with complete machine, and experimentation cost is high, and the between centers sealing for needing to verify
The technology often newly developed, technical maturity is not often high, and reliability is still to be tested, carries out test directly in complete machine and is easy
It goes wrong, the risk of test is big, and monitoring parameters of the complete machine between centers sealing are limited, is difficult to evaluate between centers sealing comprehensively
Performance.
Summary of the invention
To solve the above problems, this application provides a kind of between centers seal testers, comprising:
Bracket has first support arm, second support arm, third support arm and the 4th support arm；
First rotating shaft passes through the first bearing being arranged in first support arm and the second bearing branch being arranged in second support arm
It supports, servo-actuated between centers sealing inner ring is provided in the first rotating shaft；
Second shaft, the fourth bearing by the way that the 4th support arm is arranged in supports, and the cantilever end of second shaft and institute
The cantilever end for stating first rotating shaft is connected by 3rd bearing, and servo-actuated between centers sealing outer ring is provided in second shaft；
Between centers leakage test part is sealed between centers and is floated between inner ring and between centers sealing outer ring, plays sealing function；
The first support arm, second support arm and the first rotating shaft form first bearing chamber, third support arm, the 4th support arm with
Second shaft forms second bearing chamber, the end of the second support arm, third support arm and the first rotating shaft and the second shaft
The chamber formed is held to be divided into compressed air cell and test bearing chamber by between centers leakage test part, the test bearing chamber has and institute
The through-hole of second bearing chamber connection is stated, the compressed air cell has air inlet and gas vent, the air inlet and the exhaust
Flowmeter is provided on hole.
Preferably, the cantilever end of the first rotating shaft is connect with the inner ring of the 3rd bearing, second shaft
Cantilever end has flared part, and flared part is socketed on the outer ring of the 3rd bearing.
Preferably, the second support arm and the first rotating shaft are sealed by the first circumferential seal.
Preferably, the third support arm and second shaft are sealed by the second circumferential seal.
Preferably, the first sealing plate is provided on the outside of the first support arm of the bracket, the first sealing plate is close by first
Sealing is connect with the first rotating shaft.
Preferably, the second sealing plate is provided on the outside of the 4th support arm of the bracket, the second sealing plate is close by second
Sealing is connect with second shaft.
Preferably, flow control valve is provided on the air inlet and gas vent of the compressed air cell.
Preferably, the air inlet of the compressed air cell is connected with air inlet pipeline, and has on the air inlet pipeline
Heating apparatus.
The case where lacking exerciser present application addresses between centers sealing.The exerciser has two shafts, can simulate hair
Motivation height last item revolving speed；The test tool obturages chamber for gas, being capable of simulated engine internal condition environment；Has flow survey
Amount ability can measure between centers sealing leak rate.
Detailed description of the invention
Fig. 1 is the application between centers seal tester structural schematic diagram.
Fig. 2 is the venthole position view of the application between centers seal tester.
Wherein, 1- bracket, 2- first rotating shaft, 3- between centers seal inner ring, the second shaft of 4-, and 5- between centers seals outer ring, 6- axis
Between leakage test part, 7- venthole, 8- air inlet, 9- gas vent；
11- first support arm, 12- second support arm, 13- third support arm, the 4th support arm of 14-；
21- first bearing, 22- second bearing, 23- 3rd bearing, 24- fourth bearing；
31- first bearing chamber, 32- second bearing chamber, 33- compressed air cell, 34- test bearing chamber；
The first circumferential seal of 41-, the second circumferential seal of 42-, 43- first seal, 44- second seal.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application implementation clearer, below in conjunction with the application embodiment
In attached drawing, the technical solution in the application embodiment is further described in more detail.In the accompanying drawings, identical from beginning to end
Or similar label indicates same or similar element or element with the same or similar functions.Described embodiment is
A part of embodiment of the application, rather than whole embodiments.Embodiment below with reference to attached drawing description is to show
Example property, it is intended to for explaining the application, and should not be understood as the limitation to the application.Based on the embodiment in the application,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts belongs to this
Apply for the range of protection.Presently filed embodiment is described in detail with reference to the accompanying drawing.
This application provides a kind of between centers seal testers, as shown in Figure 1, comprising:
Bracket 1 has first support arm 11, second support arm 12, third support arm 13 and the 4th support arm 14；
First rotating shaft 2, by the first bearing 21 that is arranged in first support arm 11 be arranged in second support arm 12 the
Two bearings 22 support, and servo-actuated between centers sealing inner ring 3 is provided in the first rotating shaft 1；
Second shaft 4, the fourth bearing 24 by the way that the 4th support arm 14 is arranged in supports, and the cantilever of second shaft 4
End is connect with the cantilever end of the first rotating shaft 2 by 3rd bearing 23, and it is close to be provided with servo-actuated between centers in second shaft 4
Seal outer ring 5；
Between centers leakage test part 6 is sealed between centers and is floated between inner ring 3 and between centers sealing outer ring 5, plays sealing function；
The first support arm 11, second support arm 12 and the first rotating shaft 2 formation first bearing chamber 31, third support arm 13,
4th support arm 14 forms second bearing chamber 32, the second support arm 12, third support arm 13 and described first with second shaft 4
The chamber that shaft and second turn of the tip of the axis are formed is divided into compressed air cell 33 and test bearing chamber by between centers leakage test part 6
34, the test bearing chamber 34 has the venthole 7 being connected to the second bearing chamber, and the compressed air cell 33 has air inlet
Flowmeter is provided on hole and gas vent, the air inlet and the gas vent.
It should be noted that bracket 1 is used to simulate casing, first rotating shaft and the second shaft simulated engine shaft, therefore,
The support arm of above-mentioned bracket is named with respect to Fig. 1, and practical upper bracket is tubular structure, and support arm is the ring in tubular structure
Shape plate, annular plate has central through hole, and so that shaft passes through, annular plate is for will be divided into multiple chambers between bracket and shaft
Room, to simulate bearing bore, wherein first bearing chamber 31 and second bearing chamber 32 are mist environment, and test bearing chamber 34 is by two
What the end construction of root shaft was formed, one end is obturaged by the realization of between centers leakage test part 6, and the other end passes through venthole and the second axis
It holds chamber 32 to be connected, with reference to Fig. 2, venthole 7 can balance the pressure of second bearing chamber 32, will not generate due to test bearing chamber
Leakage caused by 33 pressure rises
Pressure-air can be passed through in compressed air cell 33, compressed air cell is provided with air inlet and gas vent, air inlet and row
It is respectively arranged with flowmeter and control valve on air pipe, can be realized the pressure control intracavitary to compressed air by the adjusting of valve
System, while heating apparatus being housed on air inlet pipeline, heat treatment can be carried out to compressed air, so that compressed air cell is simultaneously
Have pressure and temperature regulatory function, the truer working environment obtained inside simulated engine.
In the application, the performance of between centers leakage test part 6 is measured by the difference of charge flow rate and extraction flow.Test
First rotating shaft 2 drives between centers sealing inner ring 3 to rotate in the process, and the second shaft 4 drives between centers sealing outer ring 5 to rotate, and two axis are logical
Cross motor drive, can rotating Vortex also reversely rotate, between centers leakage test part 6 is outer between centers sealing inner ring 3 and between centers sealing
It floats between ring 5, plays sealing function.
In the application, 3rd bearing 23 is intershaft bearing, can guarantee that between centers seals inner ring 3 by the way of intershaft bearing
Has good concentricity between centers sealing outer ring 5, to guarantee the assembly precision of between centers sealing.
In some optional embodiments, the cantilever end of the first rotating shaft 2 is connect with the inner ring of the 3rd bearing 23,
The cantilever end of second shaft 4 has flared part, and flared part is socketed on the outer ring of the 3rd bearing 23, with reference to figure
1, the between centers sealing inner ring 3 being servo-actuated in first rotating shaft 2 is arranged between second bearing 22 and 3rd bearing 23, the second shaft
After flared part is connect by 3rd bearing with first rotating shaft, continue to extend to first rotating shaft direction, and at the end of extension
End forms servo-actuated between centers and seals outer ring 5, docks to seal inner ring 3 between centers by between centers leakage test part 6, at this point, the
Two shafts are from flared part to foring the test bearing chamber 34 between centers leakage test part 6.
Bracket is fixed structure in the application, and to simulate casing, shaft is rotated by motor driven, thus bracket and shaft it
Between need to be sealed, such as the second support arm 12 and the first rotating shaft 2 are by the sealing of the first circumferential seal 41, described
Third support arm 13 and second shaft 4 are sealed by the second circumferential seal 42.
Similarly, the first sealing plate is provided on the outside of the first support arm 11 of the bracket, the first sealing plate passes through the first sealing
Part 43 is connect with the first rotating shaft 2, and the second sealing plate is provided on the outside of the 4th support arm 14 of the bracket, and the second sealing plate is logical
Second seal 44 is crossed to connect with second shaft 4.
Above-mentioned first circumferential seal 41, the second circumferential seal 42, first seal 43 and second seal 44
To be designed as the sealing of comb tooth or brush seal.
In the application, the difference of charge flow rate and extraction flow is between centers leakage test part 6, the first circumferential sealing 41 and the
The slip of the sum of the slip of two circumferential sealings 42, the first circumferential sealing 41 and the second circumferential sealing 42 can pass through single shaft
Seal test device measurement obtains, it is possible thereby to obtain the slip in the case where dynamic operates of between centers leakage test part 6 indirectly.
Present application addresses between centers sealing there is no special purpose test equipment problem, can complete between centers sealing performance and can
By property test mission.The case where between centers sealing can only be examined in engine complete machine is avoided, carries out test phase on exerciser
Experimentation cost and empirical risk are greatly reduced for carrying out test in complete machine.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Within the technical scope of the present application, any changes or substitutions that can be easily thought of by those familiar with the art, all answers
Cover within the scope of protection of this application.Therefore, the protection scope of the application should be with the scope of protection of the claims
It is quasi-.
Claims (8)
1. a kind of between centers seal tester characterized by comprising
Bracket (1) has first support arm (11), second support arm (12), third support arm (13) and the 4th support arm (14)；
First rotating shaft (2), by being arranged in the first bearing (21) on first support arm (11) and being arranged on second support arm (12)
Second bearing (22) support, servo-actuated between centers sealing inner ring (3) is provided on the first rotating shaft (1)；
Second shaft (4), the fourth bearing (24) by setting in the 4th support arm (14) support, and second shaft (4)
Cantilever end and the cantilever end of the first rotating shaft (2) are connect by 3rd bearing (23), be provided on second shaft (4) with
Dynamic between centers seals outer ring (5)；
Between centers leakage test part (6), setting is between centers sealing inner ring (3) and between centers sealing outer ring (5)；
The first support arm (11), second support arm (12) and the first rotating shaft (2) form first bearing chamber (31), third support arm
(13), the 4th support arm (14) and second shaft (4) form second bearing chamber (32), the second support arm (12), third branch
The chamber that arm (13) and the first rotating shaft and second turn of the tip of the axis are formed is divided into compressed air by between centers leakage test part (6)
Chamber (33) and test bearing chamber (34), the test bearing chamber (34) have the venthole (7) being connected to the second bearing chamber,
The compressed air cell (33) has air inlet and gas vent, is provided with flowmeter on the air inlet and the gas vent.
2. between centers seal tester as described in claim 1, which is characterized in that the cantilever end of the first rotating shaft (2) and institute
The inner ring connection of 3rd bearing (23) is stated, the cantilever end of second shaft (4) has flared part, and flared part is socketed in institute
On the outer ring for stating 3rd bearing (23).
3. between centers seal tester as described in claim 1, which is characterized in that the second support arm (12) and described first turn
Axis (2) is sealed by the first circumferential seal (41).
4. between centers seal tester as described in claim 1, which is characterized in that the third support arm (13) and described second turn
Axis (4) is sealed by the second circumferential seal (42).
5. between centers seal tester as described in claim 1, which is characterized in that set on the outside of the first support arm (11) of the bracket
It is equipped with the first sealing plate, the first sealing plate is connect by first seal (43) with the first rotating shaft (2).
6. between centers seal tester as described in claim 1, which is characterized in that set on the outside of the 4th support arm (14) of the bracket
It is equipped with the second sealing plate, the second sealing plate is connect by second seal (44) with second shaft (4).
7. between centers seal tester as described in claim 1, which is characterized in that the air inlet of the compressed air cell (33) and
Flow control valve is provided on gas vent.
8. between centers seal tester as described in claim 1, which is characterized in that the air inlet of the compressed air cell (33) connects
It is connected to air inlet pipeline, and there is heating apparatus on the air inlet pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910656239.7A CN110361136B (en) | 2019-07-19 | 2019-07-19 | Inter-shaft sealing tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910656239.7A CN110361136B (en) | 2019-07-19 | 2019-07-19 | Inter-shaft sealing tester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110361136A true CN110361136A (en) | 2019-10-22 |
| CN110361136B CN110361136B (en) | 2021-05-25 |
Family
ID=68221023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910656239.7A Active CN110361136B (en) | 2019-07-19 | 2019-07-19 | Inter-shaft sealing tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110361136B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678646A (en) * | 2020-06-17 | 2020-09-18 | 中国航发沈阳发动机研究所 | Engine transition bearing cavity tightness inspection device |
| CN112683457A (en) * | 2020-12-18 | 2021-04-20 | 成都成发泰达航空科技有限公司 | A testing arrangement that is used for APU front bearing rotor to seal sealing performance and life-span |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2204366A (en) * | 1986-01-31 | 1988-11-09 | Flexibox Ltd | Mechanical seal testing system |
| JPH023138Y2 (en) * | 1983-04-06 | 1990-01-25 | ||
| JP2018054021A (en) * | 2016-09-29 | 2018-04-05 | 日本バルカー工業株式会社 | Liquid leakage detection unit |
| CN108709728A (en) * | 2018-05-24 | 2018-10-26 | 中国航发湖南动力机械研究所 | Eccentric contract performance test apparatus |
| EP3428389A2 (en) * | 2017-07-14 | 2019-01-16 | United Technologies Corporation | Intershaft bladelet seal |
| CN109612655A (en) * | 2018-12-10 | 2019-04-12 | 中国航发四川燃气涡轮研究院 | A kind of between centers sealing dynamic testing equipment |
-
2019
- 2019-07-19 CN CN201910656239.7A patent/CN110361136B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH023138Y2 (en) * | 1983-04-06 | 1990-01-25 | ||
| GB2204366A (en) * | 1986-01-31 | 1988-11-09 | Flexibox Ltd | Mechanical seal testing system |
| JP2018054021A (en) * | 2016-09-29 | 2018-04-05 | 日本バルカー工業株式会社 | Liquid leakage detection unit |
| EP3428389A2 (en) * | 2017-07-14 | 2019-01-16 | United Technologies Corporation | Intershaft bladelet seal |
| CN108709728A (en) * | 2018-05-24 | 2018-10-26 | 中国航发湖南动力机械研究所 | Eccentric contract performance test apparatus |
| CN109612655A (en) * | 2018-12-10 | 2019-04-12 | 中国航发四川燃气涡轮研究院 | A kind of between centers sealing dynamic testing equipment |
Non-Patent Citations (1)
| Title |
|---|
| 吴宁兴等: "反转轴间气膜密封可行性试验研究", 《航空发动机》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678646A (en) * | 2020-06-17 | 2020-09-18 | 中国航发沈阳发动机研究所 | Engine transition bearing cavity tightness inspection device |
| CN111678646B (en) * | 2020-06-17 | 2022-04-01 | 中国航发沈阳发动机研究所 | Engine transition bearing cavity tightness inspection device |
| CN112683457A (en) * | 2020-12-18 | 2021-04-20 | 成都成发泰达航空科技有限公司 | A testing arrangement that is used for APU front bearing rotor to seal sealing performance and life-span |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110361136B (en) | 2021-05-25 |
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