CN208203363U - Connection structure between straightener(stator) blade and grade between casing - Google Patents
Connection structure between straightener(stator) blade and grade between casing Download PDFInfo
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- CN208203363U CN208203363U CN201820353092.5U CN201820353092U CN208203363U CN 208203363 U CN208203363 U CN 208203363U CN 201820353092 U CN201820353092 U CN 201820353092U CN 208203363 U CN208203363 U CN 208203363U
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- bolt
- straightener
- stator
- blade
- hole
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Abstract
The utility model provides the connection structure between a kind of straightener(stator) blade and grade between casing, has good heat-proof quality.Wherein connection structure further includes heat insulating mattress；Mounting ring side corresponds to each straightener(stator) blade and is provided with mounting hole group, and mounting hole group includes at least and is located in the middle radial bolts hole and the circumferential bolt hole positioned at radial bolts hole two sides；Each bolt hole of corresponding mounting hole group is configured with a heat insulating mattress and a connection bolt；Heat insulating mattress has the force side on the heat-insulated side towards mounting ring side and the head towards connection bolt, and heat-insulated side has at least three protrusions, and heat insulating mattress is pressed on mounting ring side by the head of connection bolt；The protrusion of the heat-insulated side of heat insulating mattress cooperates with mounting ring edge point face contact；Radial bolts hole cooperates with the connection bolt passed through in line-line contact, and limits the circumferential free degree of connection bolt；Circumferential bolt hole cooperates with the connection bolt passed through in line-line contact, and limits the radial freedom degree of connection bolt.
Description
Technical field
The utility model relates to the straightener(stator) blades that casing between the stage of turbine of connection structure more particularly to aero-engine connects
Connection structure, heat-proof quality is good.
Background technique
A support case of the casing between high-pressure turbine and low-pressure turbine between stage of turbine, the rectification of casing between stage of turbine
The main function of blade is rectification, so straightener(stator) blade is leaf structure.Since straightener(stator) blade is runner elements, outer heat exchange is larger,
Interior heat exchange is smaller, so the temperature of straightener(stator) blade is relatively high usually up to 1100K.It is higher in the temperature of straightener(stator) blade, and outer machine
Casket typical temperature is lower, and the temperature resistant capability of the outer casing of casing is 950K between the grade usually selected, so connect with straightener(stator) blade
Outer casing part will carry out provision for thermal insulation, and outer casing and straightener(stator) blade junction is avoided local overheating occur.Usual straightener(stator) blade
It is connected by screw bolts with the connection of outer casing, pin is connect, card slot connection.
It is also deposited it was recognized by the inventor that straightener(stator) blade is fixed between grade outside casing on casing using traditional bolt connection
Conduct heat between casing outside casing between straightener(stator) blade and grade inverted outer casing local overheating the problem of.
Utility model content
The purpose of this utility model is to provide the connection structures between a kind of straightener(stator) blade and grade between casing, have good
Heat-proof quality.
A kind of connection structure between straightener(stator) blade and grade between casing, the mounting ring that the outer casing including casing between grade provides
The mounting portion of side, the mounting portion that straightener(stator) blade provides, and connection straightener(stator) blade and the connection bolt on the mounting ring side.Its
In, the connection structure further includes heat insulating mattress；The mounting ring side corresponds to each straightener(stator) blade and is provided with mounting hole group, institute
State mounting hole group include at least be located in the middle radial bolts hole and the circumferential bolt hole positioned at radial bolts hole two sides；
Each bolt hole of the corresponding mounting hole group is configured with a heat insulating mattress and a connection bolt；The heat insulating mattress
Force side with the heat-insulated side towards the mounting ring side and the head towards the connection bolt, the heat-insulated side
Face has at least three protrusions, and the heat insulating mattress is pressed on the mounting ring side by the head of connection bolt；The heat insulating mattress
The protrusion and the mounting ring edge point face contact of the heat-insulated side cooperate；The radial bolts hole and the company passed through
Connecting bolt cooperates in line-line contact, and limits the circumferential free degree of the connection bolt；It is described circumferential direction bolt hole with pass through
Connection bolt in line-line contact cooperate, and limit it is described connection bolt radial freedom degree.
In one or more embodiments, the radial bolts hole is long kidney-shaped hole, and the extending direction of long axis passes through
The center of the outer casing, short axle and the circle concentric with the center are tangent.
In one or more embodiments, the circumferential direction bolt hole is long kidney-shaped hole, and the extending direction of short axle passes through
The center of the outer casing, long axis and the circle concentric with the center are tangent.
In one or more embodiments, the mounting portion of the straightener(stator) blade has band-like binding face, the band
Shape binding face is bonded with the mounting ring side, to realize obturaging between straightener(stator) blade and the mounting ring side.
In one or more embodiments, it is provided with slot on the band-like binding face, for passing through cooling air.
In one or more embodiments, the corresponding heat insulating mattress of each connection screw bolt passes, the peace
It fills corresponding bolt hole, the mounting portion of the straightener(stator) blade on ring side and is fastened by nut.
It is bolted between straightener(stator) blade and grade the outer casing of casing, is bolted axial and circumferentially positioned to realize, is
Control hot-fluid, while again can play axial, circumferential, radially fixed, cooperated using the contact of aforementioned line, point contact, is both risen in this way
The effect of positioning has been arrived, and has reduced contact surface, arrangement form of each bolt hole on mounting ring side can comprehensively consider periphery
Stress distribution.By reducing the contact area of heat-transfer area, the hot-fluid between straightener(stator) blade and outer casing is reduced, is on the one hand reduced
The hot-fluid loss of straightener(stator) blade, improves turbine efficiency, still further aspect reduces outer casing maximum temperature, improves outer machine
The reliability of casket.
Detailed description of the invention
The above and other feature, property and advantage of the utility model will be by with reference to the accompanying drawings and examples
Description and become readily apparent from, in which:
Fig. 1 is the section view of the connection structure between straightener(stator) blade and grade according to one or more embodiments between casing
Figure, section view direction is along casing axial direction；
Fig. 2 is the orthographic projection view partial view of the mounting ring edge casing end on observation in Fig. 1；
Fig. 3 is the partial enlarged view that place is bolted in Fig. 1；
Fig. 4 is the axial orthographic projection view according to the heat insulating mattress of one or more embodiments；
Fig. 5 is to regard partial view according to the orthographic projection of the mounting portion of the straightener(stator) blade of one or more embodiments.
Specific embodiment
It is following to disclose the embodiment or embodiment of subject technology scheme described in a variety of different implementations.For simplification
The specific example of each element and arrangement is described below in disclosure, and certainly, these are only example, is not to this
The protection scope of invention is limited.Such as the fisrt feature then recorded in the description above second feature or above
It is formed, may include the embodiment that the first and second features are formed by way of directly contacting, also be included in the first He
The embodiment that supplementary features are formed between second feature, to can not directly be contacted between the first and second features.In addition,
In these disclosures may in different examples repeat reference numerals and/or letter.The repetition is in order to brief and clear
Chu itself does not indicate each embodiment being discussed and/or interstructural relationship.Further, when first element be with
The mode that second element is connected or combines describes, which includes the reality that the first and second elements are connected directly or are bonded to each other
Mode is applied, also includes so that the first and second interelements ground connection is connected or is tied each other using one or more other intervening elements additions
It closes.
As shown in Figure 1, the outer casing 1 that the connection structure between straightener(stator) blade and grade between casing includes casing between grade provides
Mounting portion 51 that mounting ring is provided in 11, straightener(stator) blade 5, when connecting the mounting portion 51 and mounting ring of straightener(stator) blade 5 11 connection
Bolt 2.The connection structure further includes heat insulating mattress 3.As shown in Fig. 2, the corresponding each straightener(stator) blade 5 in mounting ring side 11 is provided with installation
Hole group, mounting hole group include at least and are located in the middle radial bolts hole 6 and the circumferential bolt hole positioned at 6 two sides of radial bolts hole
7.Fig. 1 is returned to, each bolt hole 6 or 7 of corresponding mounting hole group is configured with a heat insulating mattress 3 and a connection bolt 2.Such as Fig. 3
With shown in Fig. 4, heat insulating mattress 3 has the heat-insulated side 31 towards mounting ring side 11 and applying towards the head 21 for connecting bolt 2
Power side 32, heat-insulated side 31 have at least three protrusions 310, and heat insulating mattress 3 is pressed in mounting ring side by the head 21 of connection bolt 2
On 11.The protrusion 310 and 11, mounting ring side face contact of the heat-insulated side 31 of heat insulating mattress 3 cooperate.In conjunction with Fig. 1 to Fig. 2, radial spiral shell
Keyhole 6 cooperates with the connection bolt 2 passed through in line-line contact, and limits the radial freedom degree of connection bolt 2.Two circumferential spiral shells
Keyhole 7 cooperates with the connection bolt 3 that passes through in line-line contact, and limit respectively its corresponding connection bolt 2 it is circumferential certainly
By spending.Therefore the radial freedom degree and circumferential free degree of straightener(stator) blade 5 are limited respectively, so that straightener(stator) blade 5 is secured
Ground is mounted on outer casing 1.Since aforementioned face contact, line-line contact cooperate, reduces heat transfer area, be equivalent to and increase heat
Resistance, therefore reduce the hot-fluid between straightener(stator) blade 5 and outer casing 1, and then reduce the hot-fluid loss of straightener(stator) blade 5, it improves
Turbine efficiency, colleague reduce the maximum temperature of outer casing 1, improve the reliability of outer casing.
As shown in Fig. 2, radial bolts hole 6 is long kidney-shaped hole, the extension side of long axis in one or more embodiments
To the center for passing through outer casing 1, short axle and the circle concentric with center are tangent.Long kidney-shaped hole can be slotted eye or close
The shape of slotted eye, such as runway hole.Match with connecting bolt 2 and distinguish line-line contact the two sides of the short-axis direction of long kidney-shaped hole
It closes, the circumferential free degree of limitation connection bolt 2, and the two sides of long axis direction are not contacted with connection bolt 2, therefore reduce heat transfer
Area.
With continued reference to Fig. 2, in one or more embodiments, circumferential bolt hole 7 is also long kidney-shaped hole, and short axle is prolonged
The center that direction passes through outer casing 1 is stretched, long axis and the circle concentric with center are tangent.Long axis can be straight line, be also possible to arc
Line.The long axis direction of long kidney-shaped hole is not contacted with the connection bolt passed through, while short-axis direction and the connection passed through
The cooperation of bolt line-line contact limits its radial freedom degree, therefore can equally play the effect for reducing heat transfer area.
As shown in Figure 1 and Figure 5, in one or more embodiments, the mounting portion 51 of straightener(stator) blade 5 has band-like fitting
Face 7, band-like binding face 7 are bonded with the mounting ring side 11 of outer casing 1, to realize the envelope between straightener(stator) blade 5 and mounting ring side 1
Sternly.
In some embodiments, it is provided with slot 8 on band-like binding face 7, for by cooling air, cooling air is from starting
It is introduced in the cooling air-flow of machine, for reducing the temperature of outer casing or straightener(stator) blade.
As shown in figures 1 and 3, in one or more embodiments, each bolt 2 that connects sequentially passes through corresponding heat insulating mattress
It corresponding bolt hole, the mounting portion 51 of straightener(stator) blade 5 and is fastened by nut 4 on 3 bolt hole 33, mounting ring side 11.
Although the utility model is disclosed as above with preferred embodiment, its be not for limiting the utility model, it is any
Those skilled in the art without departing from the spirit and scope of the utility model, can make possible variation and modification.Cause
This, all contents without departing from technical solutions of the utility model, according to the technical essence of the utility model to above embodiments institute
Any modification, equivalent variations and the modification made, each fall within the protection scope that the utility model claims are defined.
Claims (6)
1. the connection structure between straightener(stator) blade and grade between casing, comprising:
The mounting ring side that the outer casing of casing provides between grade；
The mounting portion that straightener(stator) blade provides；And
The mounting portion of straightener(stator) blade and the connection bolt on the mounting ring side are connected,
It is characterized in that,
The connection structure further includes heat insulating mattress；
The mounting ring side corresponds to each straightener(stator) blade and is provided with mounting hole group, and the mounting hole group is including at least in being located at
Between radial bolts hole and circumferential bolt hole positioned at radial bolts hole two sides；
Each bolt hole of the corresponding mounting hole group is configured with a heat insulating mattress and a connection bolt；
The heat insulating mattress has the force on the heat-insulated side towards the mounting ring side and the head towards the connection bolt
Side, the heat-insulated side have at least three protrusions, and the heat insulating mattress is pressed in the mounting ring side by the head of connection bolt
On；
The protrusion and the mounting ring edge point face contact of the heat-insulated side of the heat insulating mattress cooperate；
The radial bolts hole cooperates with the connection bolt passed through in line-line contact, and limits the circumferential direction of the connection bolt
Freedom degree；
The circumferential direction bolt hole cooperates with the connection bolt passed through in line-line contact, and limits the radial direction of the connection bolt
Freedom degree.
2. connection structure as described in claim 1, which is characterized in that the radial bolts hole is long kidney-shaped hole, long axis
Extending direction passes through the center of the outer casing, and short axle and the circle concentric with the center are tangent.
3. connection structure as described in claim 1, which is characterized in that the circumferential direction bolt hole is long kidney-shaped hole, short axle
Extending direction passes through the center of the outer casing, and long axis and the circle concentric with the center are tangent.
4. connection structure as described in claim 1, which is characterized in that the mounting portion of the straightener(stator) blade has band-like patch
Conjunction face, the band-like binding face are bonded with the mounting ring side, to realize obturaging between straightener(stator) blade and the mounting ring side.
5. connection structure as claimed in claim 4, which is characterized in that slot is provided on the band-like binding face, for by cold
But air.
6. connection structure as described in claim 1, which is characterized in that each connection screw bolt passes it is corresponding it is described every
It corresponding bolt hole, the mounting portion of the straightener(stator) blade and is fastened by nut in heat pad, the mounting ring side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820353092.5U CN208203363U (en) | 2018-03-15 | 2018-03-15 | Connection structure between straightener(stator) blade and grade between casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820353092.5U CN208203363U (en) | 2018-03-15 | 2018-03-15 | Connection structure between straightener(stator) blade and grade between casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208203363U true CN208203363U (en) | 2018-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820353092.5U Active CN208203363U (en) | 2018-03-15 | 2018-03-15 | Connection structure between straightener(stator) blade and grade between casing |
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| CN (1) | CN208203363U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332015A (en) * | 2019-07-16 | 2019-10-15 | 中国航发沈阳发动机研究所 | A kind of end face seal structure with uniform refrigerating function |
| CN110439707A (en) * | 2019-07-26 | 2019-11-12 | 中国航发沈阳发动机研究所 | A kind of airplane tail group elastic piece component |
-
2018
- 2018-03-15 CN CN201820353092.5U patent/CN208203363U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332015A (en) * | 2019-07-16 | 2019-10-15 | 中国航发沈阳发动机研究所 | A kind of end face seal structure with uniform refrigerating function |
| CN110332015B (en) * | 2019-07-16 | 2022-02-22 | 中国航发沈阳发动机研究所 | End face sealing structure with uniform cooling function |
| CN110439707A (en) * | 2019-07-26 | 2019-11-12 | 中国航发沈阳发动机研究所 | A kind of airplane tail group elastic piece component |
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