CN107642504B - The fancase of Screw assembly - Google Patents
The fancase of Screw assembly Download PDFInfo
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- CN107642504B CN107642504B CN201710924192.9A CN201710924192A CN107642504B CN 107642504 B CN107642504 B CN 107642504B CN 201710924192 A CN201710924192 A CN 201710924192A CN 107642504 B CN107642504 B CN 107642504B
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- outer ring
- casing
- blade
- fancase
- welding
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Abstract
The present invention relates to aero-engine technology fields, specifically provide the fancase of Screw assembly, the domain stator blade that the processing scheme of casing and the welding of each stator blade is adjusted to the second outer ring of band is screwed into the scheme of the first outer ring in a screw connection manner, remove welding, heat treatment process, solve casing deformation, the dislocation of stator blade blade, turn the small initiation of stator axial gap the problems such as wear-resistant coating axial length is insufficient, big listrium small casing surplus, enhance casing antivibration kinetic force.
Description
Technical field
The present invention relates to aero-engine technology fields, the in particular to fancase of Screw assembly.
Background technique
Domain casing generally uses welded type at present: irregularly-shaped hole, irregularly-shaped hole and stator supramarginal plate are milled out on Thin-Wall Outer Casing
It is welded after small―gap suture cooperation with electron beam welding, structure is simplified.
Traditional welding formula fancase has the following deficiencies:
1, since each stator blade supramarginal plate being respectively welded, weld seam is more, is easy there is weldering not at stator supramarginal plate
Saturating or excessive stress situation is easy crack initiation；
2, in the presence of deviating, casing is whole for the practical angular, axial position of blade and theoretical position after stator blade welding, heat treatment
Body, which shrinks to exist with flow path data, to be deviated, and influences aerodynamic stability, and deviation post is without statistics rule；
3, when the axial distance of the rotor blade of stator blade and next stage is smaller, since casing rear flange side will be in upper limb
Other than plate welding stress area, wear-resistant coating axial length under-reserve above next stage rotor blade, there are rotator tip mills
To the risk of fancase matrix, if guaranteeing wear-resistant coating axial length, flange is easy in upper limb plate welding seams risk distance
Crack initiation；
4, when stator blade consistency is big, blade and blade shape changes greatly, biggish stator supramarginal plate is needed, will cause casing milling
The irregularly-shaped hole Later Zhou Dynasty, one of the Five Dynasties is smaller to surplus out, the situation of margin of safety deficiency；
5, since maintenance needs, axial region increase seat need to be safeguarded where stator blade, when using welding scheme, maintenance
Seat weld seam relatively closely even intersects with supramarginal plate welding seam distance, is easy crack initiation, is needed outside Milling Machining casing using assembling scheme
Surface influences batch production speed of production.
Summary of the invention
To overcome above-mentioned at least one defect of the existing technology, the present invention provides the fancase of Screw assembly,
Include:
First outer ring has outside first flange side along axial one end, and the other end has outside second flange
The side close to the first flange side on side, the first outer ring inner wall is equipped with wear-resistant coating, and first outer ring has
Stop ledge, the stop ledge are located at the side for being axially distant from the first flange side of the wear-resistant coating, and described
The side close to the second flange side of one outer ring inner wall is equipped with T-type screw thread, is provided with through-hole on first outer ring；
The second outer ring obtained by machining mode, one end are matched with the stop ledge, second outer ring
Outside is equipped with the T-type screw thread matched with first outer ring, and second outer ring is solid by T-type screw thread and first outer ring
It is fixed, it is provided with through-hole on second outer ring, it is corresponding with the through-hole of first outer ring；
The blade obtained by machining mode is integrally formed with second outer ring；
It safeguards seat, is fixed on the outside of first outer ring by fastener, the position and described first of the maintenance seat
The through-hole of outer ring is corresponding, and one end of the fastener is sunken in second outer ring.
The fancase of Screw assembly provided by the invention, has the following beneficial effects:
1, the processing scheme of casing and the welding of each stator blade is adjusted to the domain stator spiral shell that machine adds threaded outer ring
Line screws in the scheme of the first outer ring, original machine is added, is welded, is forged, heat treatment process is changed to pure machine and adds, and weld seam quantity is by leaf
The piece number is kept to 0, avoid casing welding stress, increase casing rigidity, reduce the equipment requirement to factory, without because
The processing of the special warfares such as welding, heat treatment, turnover bring long period, shorten overall processing time and production cost, stator
Blade profile more meets design point；
2, casing deformation, the dislocation of stator blade blade are solved, the wear-resistant coating for turning the small initiation of stator axial gap is axial
The problems such as curtailment, big listrium small casing surplus, reduces aerodynamic loss and touches the probability of mill matrix；
3, welding procedure is eliminated, casing welding stress is avoided, increases casing rigidity, due to cancelling welding procedure,
The material of first outer ring and the second outer ring can not be identical, considers the demands such as loss of weight, vibration damping, stealthy, noise reduction, special function can be used
Composite material, the aluminum alloy materials of energy partly or entirely substitute titanium alloy material；
4, compared to traditional welding formula casing, when needing special vane, which can guarantee measurement scheme measurement
Accuracy is higher, aerodynamics influence is smaller, repacking cost is smaller, the repacking period is shorter；
5, the program is adaptable to maintenance seat and test bench, avoids conventionally employed Milling Machining boss or welded bands
Come process-cycle, welding stress the problems such as.
Detailed description of the invention
It is exemplary below with reference to the embodiment of attached drawing description, it is intended to for the explanation and illustration present invention, and cannot manage
Solution is the limitation to protection scope of the present invention.
Fig. 1 is a kind of sectional front view of the fancase of illustrative examples of the invention；
Fig. 2 is the elevational cross-sectional view of the maintenance seat in a kind of illustrative examples of the invention.
Appended drawing reference:
10 first outer rings
11 first flange sides
12 second flange sides
13 wear-resistant coatings
14 stop ledges
20 second outer rings
30 blades
40 maintenance seats
50 fasteners
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.
It should be understood that in the accompanying drawings, from beginning to end same or similar label indicate same or similar element or
Element with the same or similar functions.Described embodiments are some of the embodiments of the present invention, rather than whole implementation
Example, in the absence of conflict, the features in the embodiments and the embodiments of the present application can be combined with each other.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts,
It shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, rather than indication or suggestion meaning
Device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as protecting the present invention
Protect the limitation of range.
Herein, " schematic " expression " serving as examplea, instances, or illustrations " should not will be described herein as " showing
Any diagram, the embodiment of meaning property " are construed to technical solution that is a kind of preferred or more having advantages.
Herein, " first ", " second " etc. are only used for mutual differentiation, rather than indicate their significance level and sequence
Deng.
As shown in Figure 1, the fancase of Screw assembly provided by the invention, including the first outer ring 10, pass through machining side
The second outer ring 20 that formula obtains, the blade 30 and maintenance seat 40 obtained by machining mode.
First outer ring 10 has outside first flange side 11 along axial one end, and the other end has outside second flange
Side 12, the side on the close first flange side 11 of 10 inner wall of the first outer ring is equipped with wear-resistant coating 13, and the first outer ring 10 has only
Dynamic boss 14, stop ledge 14 are located at the side for being axially distant from first flange side 11 of wear-resistant coating 13, in the first outer ring 10
The side on the close second flange side 12 of wall is equipped with T-type screw thread, and the region of T-type screw thread is the partial region of the second outer ring 20, and
Not all region is provided with through-hole on the first outer ring 10.
Second outer ring, 20 one end is matched with stop ledge 14, is equipped on the outside of the second outer ring 20 and is matched with the first outer ring 10
T-type screw thread, the second outer ring 20 is provided with through-hole on second outer ring 20, with first by T-type screw thread and the fixation of the first outer ring 10
The through-hole of outer ring 10 is corresponding.
Blade 30 and the second outer ring 20 are integrally formed, and when assembly, the second outer ring 20 is twisted from 12 place sidespin of second flange side
Enter the first outer ring 10 and is mutually fixed with it.
As shown in Fig. 2, maintenance seat 40 is fixed on the outside of the first outer ring 10 by fastener 50, the position of seat 40 and the is safeguarded
The through-hole of one outer ring 10 is corresponding, and one end of fastener 50 is sunken in the second outer ring 20.When need to carry out dynamic stress measurement or
In runner when total temperature total pressure measurement, angularly the second outer ring 20 can be carried out to add work cutting that need to measure, increased in corresponding position
The single blade of specific function positioned by the bolt of radial countersunk head form, is ressembled and is cut off after test
Blade.
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 (1)
1. the fancase of Screw assembly characterized by comprising
First outer ring (10) has outside first flange side (11) along axial one end, and the other end has outside second
The side close to the first flange side (11) of flange (12), the first outer ring (10) inner wall is equipped with wear-resistant coating
(13), and first outer ring (10) has stop ledge (14), and the stop ledge (14) is located at the wear-resistant coating (13)
The side for being axially distant from the first flange side (11), the first outer ring (10) inner wall close to the second flange side
(12) side is equipped with T-type screw thread, is provided with through-hole on first outer ring (10)；
The second outer ring (20) obtained by machining mode, one end are matched with the stop ledge (14), and described second
The T-type screw thread matched with first outer ring (10) is equipped on the outside of outer ring (20), second outer ring (20) passes through T-type screw thread
It is fixed with first outer ring (10), it is provided with through-hole on second outer ring (20), the through-hole with first outer ring (10)
It is corresponding；
The blade (30) obtained by machining mode is integrally formed with second outer ring (20)；
It safeguards seat (40), is fixed on the outside of first outer ring (10) by fastener (50), the position of maintenance seat (40)
Set corresponding with the through-hole of first outer ring (10), one end of the fastener (50) is sunken in second outer ring (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710924192.9A CN107642504B (en) | 2017-09-30 | 2017-09-30 | The fancase of Screw assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710924192.9A CN107642504B (en) | 2017-09-30 | 2017-09-30 | The fancase of Screw assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107642504A CN107642504A (en) | 2018-01-30 |
| CN107642504B true CN107642504B (en) | 2019-08-23 |
Family
ID=61123229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710924192.9A Active CN107642504B (en) | 2017-09-30 | 2017-09-30 | The fancase of Screw assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107642504B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3827680A1 (en) * | 1988-08-16 | 1990-02-22 | Mtu Muenchen Gmbh | Device for fixing a guiding grate, made of titanium, of an axial-flow compressor to a compressor housing made of a fibre-reinforced plastic |
| GB2376723B (en) * | 2001-06-20 | 2004-12-08 | Rolls Royce Plc | Tandem guide vane |
| GB2388161A (en) * | 2002-05-02 | 2003-11-05 | Rolls Royce Plc | Gas turbine engine compressor casing |
| EP2075416B1 (en) * | 2007-12-27 | 2011-05-18 | Techspace Aero | Method for manufacturing a turboshaft engine element and device obtained using same |
| CN104334855B (en) * | 2012-06-21 | 2016-12-14 | 川崎重工业株式会社 | The fan guard of aircraft engine |
| EP2811121B1 (en) * | 2013-06-03 | 2019-07-31 | Safran Aero Boosters SA | Composite casing for axial turbomachine compressor with metal flange |
-
2017
- 2017-09-30 CN CN201710924192.9A patent/CN107642504B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107642504A (en) | 2018-01-30 |
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