CN107402032A - A kind of multiple spot conversion equipment of revolving part wall parameter measurement - Google Patents
A kind of multiple spot conversion equipment of revolving part wall parameter measurement Download PDFInfo
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- CN107402032A CN107402032A CN201710567545.4A CN201710567545A CN107402032A CN 107402032 A CN107402032 A CN 107402032A CN 201710567545 A CN201710567545 A CN 201710567545A CN 107402032 A CN107402032 A CN 107402032A
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- transmission shaft
- bearing block
- electrical feedthrough
- bearing
- component
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
Abstract
The present invention provides a kind of multiple spot conversion equipment of revolving part wall parameter measurement, and electrical feedthrough bearing block is ring flange class component, including sleeve part and the integrated disc portions for being provided with tachogenerator；Transmission shaft component is set through electrical feedthrough bearing block both ends, wherein passing integrated disc portions one end in transmission shaft component is socketed with bellows, the other end is provided with aviation plug；It is located at electrical feedthrough bearing block sleeve part in transmission shaft component and is set with the duplex bearing supporting construction that is connected with electrical feedthrough bearing block integrated disc portions, the leather cup component and phonic wheel being connected with duplex bearing supporting construction are set with positioned at electrical feedthrough bearing block integrated disc portions, the oil sealing cover being connected with electrical feedthrough bearing block integrated disc portions is set between phonic wheel and bellows, the multigroup lead being connected with aviation plug is internally provided with transmission shaft component.The device of the present invention, engine test of once appearing on the stage can obtain multi-measuring point wall data and synchronous rotational speed data, and have certain fault-tolerant ability to nonstandard working environment.
Description
Technical field
The invention belongs to aeroengine rotor dynamic stress rest field, and in particular to a kind of revolving part wall parameter measurement
Multiple spot conversion equipment.
Background technology
In aviation and other civil areas, it is often necessary to understand the wall parameter (dynamic stress, temperature, pressure) of rotor element,
Especially be frequently necessary to during reseach of engine carry out rotor element vibration stress test, with improve the reliability of engine,
Developing risk is reduced, especially in the case of rotor element breaks down, this demand seems more urgent.In Now Domestic wall
In parameter testing, commonly using to method of testing be electrical feedthrough method, i.e. gyrator channel is transferred to stator part by electrical feedthrough,
And the signal testing on rotary part is realized by tester.Measuring point quantity depends on electrical feedthrough port number on rotor part
Amount, especially under the conditions of high rotating speed (close to 11000RPM), electrical feedthrough size is limited by installing space on engine, with engine
Rotor dynamic stress rest experiment exemplified by, under high speed conditions engine once appear on the stage test at most can only be to being not more than 21 surveys
Point measures.Measure more multi-measuring point, engine can only leave office decomposition, pasted on other measuring points appear on the stage after sensor after
Continuous to be tested, engine needs repeatedly to leave office to decompose to appear on the stage again, and financial cost and time cost greatly increase, and twice
Assembling can cause engine operating condition difference, cause data comparability decline twice.Secondly for Dynamic Signal, it usually needs each
Phase relation between passage institute gathered data, this just needs synchronous acquisition rotary speed data, and on electrical feedthrough component generally now
There is no speed measuring device.Again, electrical feedthrough is present easily by engine rotor axial float and Influence from Eccentric, whole system without grease proofing
The problems such as device.
The content of the invention
It is an object of the invention to provide a kind of multiple spot conversion equipment of revolving part wall parameter measurement, overcomes or alleviated by existing
There is at least one drawbacks described above of technology.
The purpose of the present invention is achieved through the following technical solutions：A kind of multiple spot converting means of revolving part wall parameter measurement
Put, for connecting electrical feedthrough component and transmission mechanism, including electrical feedthrough bearing block, transmission shaft component, duplex bearing supporting construction, skin
Bowl assembly, phonic wheel, oil sealing cover, bellows, tachogenerator, aviation plug, it is multigroup to survey lead, multigroup lead to be measured, draw electricity
Device bearing block is ring flange class component, including the sleeve part that is connected with electrical feedthrough component and the disk for being provided with tachogenerator
Part；Transmission shaft component is set through electrical feedthrough bearing block both ends, wherein passing the socket of integrated disc portions one end in transmission shaft component
There is bellows, the other end is provided with aviation plug；It is located at electrical feedthrough bearing block sleeve part in transmission shaft component to be set with and draw
The connected duplex bearing supporting construction of electrical equipment bearing block integrated disc portions, is located at electrical feedthrough bearing block integrated disc portions set in transmission shaft component
Equipped with the leather cup component being connected with duplex bearing supporting construction and the phonic wheel for being located remotely from duplex bearing supporting construction side；It is being driven
Shaft assembly is set with the oil sealing cover being connected with electrical feedthrough bearing block integrated disc portions between phonic wheel and bellows, in power transmission shaft group
Part is internally provided with multigroup lead to be measured and what is be connected with aviation plug multigroup will survey lead.
Preferably, the transmission shaft component includes power transmission shaft, locating shaft, the first locking nut, driving head；Power transmission shaft bag
Include cylindrical portions and the section being connected with the cylindrical portions one end and hold wire casing in the tubular of C fonts, wherein holding the internal diameter of wire casing
More than the external diameter of cylindrical portions, the aviation plug is plugged with away from cylindrical portions one end holding wire casing；Locating shaft is cylindrical shape
Component, peripheral flange is radially provided with the circle tube member outside wall surface, the locating shaft one end is justified through power transmission shaft
Cylinder part is set, and flange is in contact with power transmission shaft, is passed cylindrical portions and is fixed by being set with the first locking nut, the locating shaft is another
The bellows is socketed with the outer wall of one end, and the biography for being connected with the transmission mechanism is connected with the end termination position
Dynamic head.
Preferably, the duplex bearing supporting construction is set in the cylindrical portions of the power transmission shaft, duplex bearing support
Structure includes clutch shaft bearing, spacing overcoat, spacing inner sleeve, second bearing, and wherein clutch shaft bearing is located at cylindrical portions close to appearance line
Groove one end, the clutch shaft bearing inner ring are engaged with cylindrical portions outer wall, outer ring and the electrical feedthrough bearing block sleeve internal partial wall
It is engaged；Spacing overcoat fitting electrical feedthrough bearing block inwall is set, and wherein the spacing overcoat one end connects with clutch shaft bearing outer ring
Touch, spacing overcoat other end bending to electrical equipment bearing block integrated disc portions；Second bearing is arranged between spacing overcoat and power transmission shaft；
Spacing inner sleeve is between two bearings, and the spacing inner sleeve both ends are in contact with two bearings inner ring respectively.
Preferably, the leather cup component includes pressure ring, leather cup seat, leather cup, baffle ring, and pressure ring is sleeved on outside the power transmission shaft
On wall, and the pressure ring one end is in contact with the second bearing inner ring, be set with the pressure ring outer wall leather cup and with this
The adjacent baffle ring of leather cup, wherein baffle ring are located remotely from the duplex bearing supporting construction side；In leather cup and the outer circumference surface of baffle ring
On be socketed with the leather cup seat being in contact with the spacing overcoat dogleg section, and by bolt by leather cup seat, spacing overcoat bending
Partly, the electrical equipment bearing block integrated disc portions three is connected.
Preferably, the phonic wheel is socketed on the power transmission shaft, and be provided with prevents both from relatively rotating therebetween
Locking key, and be set with the rotating shaft the second locking nut fix phonic wheel, by screwing the second locking nut so that the phonic wheel
It is in contact respectively with the pressure ring, the second locking nut.
Preferably, the tachogenerator is arranged on along the parallel electrical feedthrough bearing block sleeve segment axis direction and drawn
Close sleeve part side in electrical equipment bearing block integrated disc portions.
A kind of beneficial effect of the multiple spot conversion equipment of revolving part wall parameter measurement provided by the present invention is, starts
Machine test of once appearing on the stage can obtain multi-measuring point wall data and synchronous rotational speed data；Whole test device is to nonstandard working environment
With certain fault-tolerant ability；Data acquisition amount and data accuracy is greatly improved, reduces scientific research time and financial cost, to turn
The design and failture evacuation of component provide effective data supporting.
Brief description of the drawings
Fig. 1 is the structural representation of the multiple spot conversion equipment of the revolving part wall parameter measurement in the present invention；
Fig. 2 is Fig. 1 partial enlarged drawing；
Fig. 3 is the method for testing figure of the multiple spot conversion equipment of the revolving part wall parameter measurement in the present invention；
Fig. 4 is the synchronous rotational speed pulse schematic diagram of apparatus of the present invention.
Reference：
1- electrical feedthroughs component, 2- will survey lead, 3- electrical feedthroughs bearing block, the locking nuts of 4- first, 5- power transmission shafts, 6- first
Bearing, 7- spacings overcoat, 8- spacings inner sleeve, 9- second bearings, 10- pressure rings, 11- leather cups seat, 12- leather cups, 13- baffle rings, 14- sounds
Wheel, 15- oil sealings cover, 16- locking keys, the locking nuts of 17- second, 18- locating shafts, 19- bellowss, 20- sensors, 21- transmission
Mechanism, 22- driving heads, 23- tachogenerators, 24- leads to be measured, 25- aviation plugs.
Embodiment
The multiple spot conversion equipment of the revolving part wall parameter measurement to the present invention is done further specifically below in conjunction with the accompanying drawings
It is bright.
As shown in figure 1, a kind of multiple spot conversion equipment of revolving part wall parameter measurement, for connect electrical feedthrough component 1 with
Transmission mechanism 21, including electrical feedthrough bearing block 3, transmission shaft component, duplex bearing supporting construction, leather cup component, phonic wheel 14, oil sealing cover
15th, bellows 19, tachogenerator 23, aviation plug 25, multigroup to survey lead 2, multigroup lead 24 to be measured.
Electrical feedthrough bearing block 3 is ring flange class component, including the sleeve part that is connected with electrical feedthrough component 1 and is provided with survey
The integrated disc portions of fast sensor 23.Wherein the tachogenerator 23 is used for the rotating speed for measuring phonic wheel 14, and the tachogenerator
23 selections are arranged on close in the integrated disc portions of electrical feedthrough bearing block 3 along the parallel sleeve part axis direction of electrical feedthrough bearing block 3
Sleeve part side.Synchronous rotational speed pulse can be provided by phonic wheel 14, tachogenerator 23, is that the wall parameters such as dynamic stress are surveyed
Value provides phase foundation, sees Fig. 4.
Transmission shaft component is set through the both ends of electrical feedthrough bearing block 3, and transmission shaft component selection includes power transmission shaft 5, positioning
Axle 18, the first locking nut 4, the form of driving head 22, wherein, power transmission shaft 5 include cylindrical portions and with the cylindrical portions one
The connected section in end holds wire casing in the tubular of C fonts, wherein the internal diameter for holding wire casing is more than the external diameter of cylindrical portions, holding, wire casing is remote
Aviation plug 25 is plugged with from cylindrical portions one end.Locating shaft 18 is circle tube member, the edge in the circle tube member outside wall surface
Radial direction is provided with peripheral flange, and the one end of locating shaft 18 is set through the cylindrical portions of power transmission shaft 5, flange and the phase of power transmission shaft 5
Contact, pass cylindrical portions and fixed by being set with the first locking nut 4, bellows is socketed with the other end outer wall of locating shaft 18
19, the setting of bellows 19 can reduce the problem of engine driveshaft is with 18 nonconcentricity of locating shaft, and in the end termination
Position is connected with the driving head 22 for being connected with transmission mechanism 21.
It is set with and electrical feedthrough bearing block 3 as shown in Fig. 2 being located at the sleeve part of electrical feedthrough bearing block 3 in transmission shaft component
The connected duplex bearing supporting construction of integrated disc portions.The duplex bearing supporting construction is specifically set in the power transmission shaft 5 in transmission shaft component
Cylindrical portions on, the formal character of duplex bearing supporting construction includes clutch shaft bearing 6, spacing overcoat 7, spacing inner sleeve 8, the second axle
Hold more than 9 parts.Clutch shaft bearing 6 is located at close appearance wire casing one end in the cylindrical portions of power transmission shaft 5, the inner ring of clutch shaft bearing 6 and circle
Cylinder outer wall is engaged, and outer ring is engaged with the sleeve part inwall of electrical feedthrough bearing block 3.Spacing overcoat 7 is bonded electrical feedthrough axle
The inwall of bearing 3 is set, and wherein the one end of spacing overcoat 7 is in contact with the outer ring of clutch shaft bearing 6, and the other end bending of spacing overcoat 7 is arrived
In the integrated disc portions of electrical equipment bearing block 3.Second bearing 9 is then arranged between spacing overcoat 7 and power transmission shaft 5.Spacing inner sleeve 8 is located at two
Between bearing, and the both ends of spacing inner sleeve 8 are in contact with two bearings inner ring respectively.The duplex bearing supporting construction can be reduced effectively
Influence of the engine axial float to electrical feedthrough component 1.
It is located in transmission shaft component in the integrated disc portions of electrical feedthrough bearing block 3 and is set with leather cup component and phonic wheel 14, wherein, sound
Wheel 14 is located remotely from duplex bearing supporting construction side.Leather cup component selection includes pressure ring 10, leather cup seat 11, leather cup 12, baffle ring
13 form.Pressure ring 10 is sleeved on the outer wall of power transmission shaft 5 in transmission shaft component, and the one end of pressure ring 10 and second bearing 9
Inner ring is in contact.Leather cup 12 and the baffle ring 13 adjacent with the leather cup 12, wherein baffle ring 13 are set with the outer wall of pressure ring 10
It is located remotely from duplex bearing supporting construction side.It is socketed with and the bending of spacing overcoat 7 on the outer circumference surface of leather cup 12 and baffle ring 13
The leather cup seat 11 that is in contact of part, and by bolt by leather cup seat 11, the dogleg section of spacing overcoat 7, the round plate of electrical equipment bearing block 3
Three is divided to be connected.
And phonic wheel 14 is equally socketed on power transmission shaft 5, being set between phonic wheel 14 and power transmission shaft 5 prevents both from relatively rotating
Locking key 16, and in rotary shaft 5 selection suit the second locking nut 17 to fix phonic wheel 14, by screwing the second locking screw
Mother 17 causes the phonic wheel 14 to be in contact respectively with pressure ring 10, the second locking nut 17.
It is set between phonic wheel 14 and bellows 19 in transmission shaft component and is connected with the integrated disc portions of electrical feedthrough bearing block 3
Oil sealing cover 15, the double-layer seal protection of oil sealing cover 15 and leather cup component can reduce lubricating oil to be influenceed to caused by electrical feedthrough, is prolonged
The long electrical feedthrough life-span.Locating shaft 18 in transmission shaft component be internally provided with multigroup lead to be measured 24 and with aviation plug 25
It is connected multigroup to survey lead 2.
The installation steps of the present apparatus are described below.
First successively by clutch shaft bearing 6, spacing overcoat 7, spacing inner sleeve 8, second bearing 9 from the right-hand member of electrical feedthrough bearing block 3
Load；Then power transmission shaft 5 is loaded from the left end of electrical feedthrough bearing block 3；Next by pressure ring 10, locking key 16, phonic wheel 14, second
Locking nut 17, locating shaft 18, bellows 19, driving head 22, the first locking nut 4 are installed on power transmission shaft 5；By leather cup seat
11st, leather cup 12, baffle ring 13, oil sealing cover 15 are installed on electrical feedthrough bearing block 3；The lead 2 that to survey of sensor 20 is drawn with to be measured
Line 24, which is installed to power transmission shaft 5, to be held in wire casing, and will be surveyed lead 2 and be connected with aviation plug 26, then aviation plug 26 is installed
Onto power transmission shaft 5；Finally the component of electrical feedthrough bearing block 3 is connected with transmission mechanism 21, electrical feedthrough component 1, tachogenerator
23 are installed on the component of electrical feedthrough bearing block 3, refer to Fig. 1.
As shown in figure 3, test process is as follows.Test lead is penetrated from oil sealing set center, and appearance is entered by bellows 19
It is multigroup lead whole lead heat-shrink tube boundlings in wire casing, differentiation will survey lead 2 and lead 24 to be measured.During operation, first
The line end of lead 24 to be measured is protected, then itself is wound to put into lead 24 to be measured and holds wire casing bottom, compacting.Connect down
Lead 2 will be surveyed will be welded with leading portion aviation plug 25, lead 2 will be equally surveyed after the completion of welding itself be wound and put
Enter to hold in wire casing.It is fixed to institute is leaded in appearance wire casing, finally aviation plug 25 is installed to and holds wire casing outer face.It is to be measured
After the completion of examination, the lead for having completed test is removed from aviation plug 25, then lead welding is not surveyed by being taken out in appearance wire casing
Onto aviation plug 25, leaded be reentered into appearance wire casing of institute is continued to test, by that analogy, repeated.
According to test conversion device provided by the invention and operating process, by taking rotor wall parameter testing as an example, engine
Once appearing on the stage can obtain much with 60 measuring point datas, be much higher than existing level.
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 readily occur 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)
- A kind of 1. multiple spot conversion equipment of revolving part wall parameter measurement, for connecting electrical feedthrough component (1) and transmission mechanism (21), it is characterised in that including electrical feedthrough bearing block (3), transmission shaft component, duplex bearing supporting construction, leather cup component, phonic wheel (14), oil sealing cover (15), bellows (19), tachogenerator (23), aviation plug (25), multigroup to survey lead (2), multigroup treat Survey lead (24), electrical feedthrough bearing block (3) is ring flange class component, including the sleeve part that is connected with electrical feedthrough component (1) and The integrated disc portions of tachogenerator (23) are installed；Transmission shaft component is set through electrical feedthrough bearing block (3) both ends, wherein passing Moving axis component passes integrated disc portions one end and is socketed with bellows (19), and the other end is provided with aviation plug (25)；In power transmission shaft group Part is located at electrical feedthrough bearing block (3) sleeve part and is set with the duplex bearing support being connected with electrical feedthrough bearing block (3) integrated disc portions Structure, it is located at electrical feedthrough bearing block (3) integrated disc portions in transmission shaft component and is set with the leather cup that is connected with duplex bearing supporting construction Component and the phonic wheel (14) for being located remotely from duplex bearing supporting construction side；It is located at phonic wheel (14) and bellows in transmission shaft component (19) the oil sealing cover (15) being connected with electrical feedthrough bearing block (3) integrated disc portions is set between, is set inside transmission shaft component There is multigroup lead to be measured (24) and what is be connected with aviation plug (25) multigroup will survey lead (2).
- 2. the multiple spot conversion equipment of revolving part wall parameter measurement according to claim 1, it is characterised in that the transmission Shaft assembly includes power transmission shaft (5), locating shaft (18), the first locking nut (4), driving head (22)；Power transmission shaft (5) includes cylindrical portion The section divided and be connected with the cylindrical portions one end holds wire casing in the tubular of C fonts, wherein the internal diameter for holding wire casing is more than cylinder Partial external diameter, the aviation plug (25) is plugged with away from cylindrical portions one end holding wire casing；Locating shaft (18) is cylindrical shape Component, peripheral flange is radially provided with the circle tube member outside wall surface, locating shaft (18) one end is through transmission Axle (5) cylindrical portions are set, and flange is in contact with power transmission shaft (5), and it is solid by being set with the first locking nut (4) to pass cylindrical portions It is fixed, the bellows (19) is socketed with locating shaft (18) other end outer wall, and be connected with and be used at the end termination position The driving head (22) being connected with the transmission mechanism (21).
- 3. the multiple spot conversion equipment of revolving part wall parameter measurement according to claim 2, it is characterised in that the twin shaft Hold supporting construction to be set in the cylindrical portions of the power transmission shaft (5), the duplex bearing supporting construction includes clutch shaft bearing (6), determined Away from overcoat (7), spacing inner sleeve (8), second bearing (9), wherein clutch shaft bearing (6) is located at the close appearance wire casing one end of cylindrical portions, Clutch shaft bearing (6) inner ring is engaged with cylindrical portions outer wall, outer ring and electrical feedthrough bearing block (3) sleeve part inwall phase Coordinate；Spacing overcoat (7) fitting electrical feedthrough bearing block (3) inwall is set, wherein spacing overcoat (7) one end and clutch shaft bearing (6) outer ring is in contact, spacing overcoat (7) other end bending to electrical equipment bearing block (3) integrated disc portions；Second bearing (9) is arranged on Between spacing overcoat (7) and power transmission shaft (5)；Spacing inner sleeve (8) is between two bearings, and spacing inner sleeve (8) both ends point It is not in contact with two bearings inner ring.
- 4. the multiple spot conversion equipment of revolving part wall parameter measurement according to claim 3, it is characterised in that the leather cup Component includes pressure ring (10), leather cup seat (11), leather cup (12), baffle ring (13), and pressure ring (10) is sleeved on the power transmission shaft (5) outer wall On, and pressure ring (10) one end is in contact with the second bearing (9) inner ring, and leather cup is set with pressure ring (10) outer wall (12) baffle ring (13) adjacent and with the leather cup (12), wherein baffle ring (13) are located remotely from the duplex bearing supporting construction one Side；In leather cup (12) with being socketed with the skin being in contact with spacing overcoat (7) dogleg section on the outer circumference surface of baffle ring (13) Bowl seat (11), and by bolt by leather cup seat (11), spacing overcoat (7) dogleg section, the electrical equipment bearing block (3) integrated disc portions Three is connected.
- 5. the multiple spot conversion equipment of revolving part wall parameter measurement according to claim 4, it is characterised in that the phonic wheel (14) it is socketed on the power transmission shaft (5), is provided with the locking key (16) for preventing that both from relatively rotating therebetween, and turning The fixed phonic wheel (14) of the second locking nut (17) is set with moving axis (5), by screwing the second locking nut (17) so that the phonic wheel (14) it is in contact respectively with the pressure ring (10), the second locking nut (17).
- 6. the multiple spot conversion equipment of revolving part wall parameter measurement according to claim 1, it is characterised in that described to test the speed Sensor (23) is arranged on electrical feedthrough bearing block (3) disk along parallel electrical feedthrough bearing block (3) sleeve part axis direction Close sleeve part side on part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710567545.4A CN107402032B (en) | 2017-07-12 | 2017-07-12 | A kind of multiple spot conversion equipment of revolving part wall surface parameter measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710567545.4A CN107402032B (en) | 2017-07-12 | 2017-07-12 | A kind of multiple spot conversion equipment of revolving part wall surface parameter measurement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107402032A true CN107402032A (en) | 2017-11-28 |
| CN107402032B CN107402032B (en) | 2019-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710567545.4A Active CN107402032B (en) | 2017-07-12 | 2017-07-12 | A kind of multiple spot conversion equipment of revolving part wall surface parameter measurement |
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| Country | Link |
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| CN (1) | CN107402032B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108332956A (en) * | 2017-12-26 | 2018-07-27 | 中国航发四川燃气涡轮研究院 | A kind of turbine performance experiment outlet wheel measuring mechanism |
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| CN105424371A (en) * | 2015-12-12 | 2016-03-23 | 中国南方航空工业(集团)有限公司 | Signal transmission apparatus |
| CN106197808A (en) * | 2016-08-16 | 2016-12-07 | 中国航空工业集团公司沈阳发动机设计研究所 | The location of a kind of rotor without thrust bearing and axial-force testing device |
| CN106441905A (en) * | 2016-08-16 | 2017-02-22 | 中国航空工业集团公司沈阳发动机设计研究所 | Signal transmission device with rotor acting as benchmark |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03207284A (en) * | 1989-12-29 | 1991-09-10 | Ntn Corp | Motor load detector |
| JP3199057B2 (en) * | 1991-09-13 | 2001-08-13 | 株式会社デンソー | Abnormality detection device for fuel evaporation prevention device |
| CN102095515A (en) * | 2011-01-05 | 2011-06-15 | 北京航空航天大学 | Temperature-measuring device for cylindrical combustion chamber wall |
| CN205015110U (en) * | 2015-04-30 | 2016-02-03 | 中国航空动力机械研究所 | Installation device is measured to aeroengine's compressor blade dynamic stress |
| CN105424371A (en) * | 2015-12-12 | 2016-03-23 | 中国南方航空工业(集团)有限公司 | Signal transmission apparatus |
| CN106197808A (en) * | 2016-08-16 | 2016-12-07 | 中国航空工业集团公司沈阳发动机设计研究所 | The location of a kind of rotor without thrust bearing and axial-force testing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108332956A (en) * | 2017-12-26 | 2018-07-27 | 中国航发四川燃气涡轮研究院 | A kind of turbine performance experiment outlet wheel measuring mechanism |
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| CN107402032B (en) | 2019-07-19 |
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