CN207569192U - Circumferential sealing component and engine - Google Patents
Circumferential sealing component and engine Download PDFInfo
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- CN207569192U CN207569192U CN201721422871.8U CN201721422871U CN207569192U CN 207569192 U CN207569192 U CN 207569192U CN 201721422871 U CN201721422871 U CN 201721422871U CN 207569192 U CN207569192 U CN 207569192U
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- baffle
- sealing ring
- seal receptacle
- boss
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Abstract
The utility model is related to a kind of circumferential sealing component and engines, wherein, circumferential sealing component includes seal receptacle, sealing ring and baffle, the first connection structure is equipped between the sealing ring and the baffle, to limit the relative rotation of the sealing ring and the baffle, the sealing ring and the baffle are set on the seal receptacle, the second connection structure are equipped between the baffle and the seal receptacle, to limit the relative rotation of the baffle and the seal receptacle.The utility model is arranged on using the first connection structure as anti-rotation structure on baffle and sealing ring, therefore, in the case where not increasing original installation procedure, the circumferential position of sealing ring just has determined before seal receptacle is pushed into, assembling process is simple, solve existing for existing circumferential sealing component stop pin assembly manipulation is difficult and the assembling of circumferential sealing component is not easy, repeatedly the problem of, reduce installation period, and improper assembling influence caused by sealing performance and service life can be effectively reduced.
Description
Technical field
The utility model is related to engine art more particularly to a kind of circumferential sealing components and engine.
Background technology
In gas-turbine unit, the performance to product, reliability, service life and maintainability are sealed with significant impact.
At present in the lubricating cavity of gas-turbine unit, one of widely used seal form is circumferential sealing.
As shown in Figure 1, the assembly method of traditional circumferential sealing component is that sealing ring 1 ' is passed through circumferential tension spring 4 '
Be fixed on shaft 8 ', then in the axial push-in seal receptacle 3 ' of sealing ring 1 ', will finally install axial compressed spring 7 ', baffle 6 ' and
Retainer ring 5 ' etc..In above-mentioned assembling process, need the stop pin 2 ' on the groove alignment seal receptacle 3 ' on sealing ring 1 '.Due to
The inhomogeneities in the ring segment gap of the isostructural depth limit of seal receptacle 3 ' and sealing ring 1 ', the alignment assembling of stop pin 2 ' is one
The process of blind dress is needed constantly to adjust the circumferential position of sealing ring 1 ', can be accurately seated in the groove ensured on sealing ring 1 '
In stop pin 2 ' on seal receptacle 3 '.Entire assembling process is not easy to operate, there are problems that assembling repeatedly, efficiency of assembling is low.
And under normal conditions, stop pin 2 ' is fixed on seal receptacle by being interference fitted with the pin hole on 3 ' end face of seal receptacle
On 3 '.During stop pin 2 ' is assembled, it is ensured that assembling process does not hurt the very high seal receptacle of ground precision
3 ' end faces, while to ensure the loading depth of stop pin 2 '；Since common stop pin 2 ' is straight pin, and 3 ' end face of seal receptacle
Narrow space, therefore, the assembling process of stop pin 2 ' be not easy to operate, and the depth of stop pin 2 ' is not easy to ensure, and is easy to hurt
3 ' end face of seal receptacle, so as to influence sealing effect.
Utility model content
The purpose of this utility model is to propose a kind of circumferential sealing component and engine, wherein, circumferential sealing component can
Solve the problem of that assembling is difficult and assembles repeatedly.
To achieve the above object, the utility model provides a kind of circumferential sealing component, including seal receptacle, sealing ring and
Baffle is equipped with the first connection structure, to limit the phase of the sealing ring and the baffle between the sealing ring and the baffle
To rotation, the sealing ring and the baffle are set on the seal receptacle, and second is equipped between the baffle and the seal receptacle and is connected
Binding structure, to limit the relative rotation of the baffle and the seal receptacle.
One preferably or in alternative embodiment, first connection structure is recessed including the first boss to cooperate and first
Slot, first groove are set on one of the sealing ring and the baffle, and the first boss is set on the sealing
Ring and the baffle it is wherein another on.
One preferably or in alternative embodiment, fan-shaped cross section or side for first groove and the first boss
Shape.
One preferably or in alternative embodiment, the sealing ring includes more than two segmental arcs, each segmental arc and institute
It states and is equipped with the first connection structure between baffle.
One preferably or in alternative embodiment, circumferential sealing component includes the first elastic component, and the sealing ring includes two
More than segmental arc, first elastic component is annular, for each segmental arc to be connected into the sealing ring.
One preferably or in alternative embodiment, second connection structure is recessed including the second boss to cooperate and second
Slot, second groove are set on one of the baffle and the seal receptacle, and the second boss is set on the baffle
With the seal receptacle it is wherein another on.
One preferably or in alternative embodiment, the second boss is set on the baffle, and second groove is set on described
Seal receptacle, and the second groove is set on the bottom of the seal receptacle, the second boss is set on the outer shroud edge of the baffle.
One preferably or in alternative embodiment, circumferential sealing component includes the second elastic component and retainer ring, second elasticity
Part is set between the sealing ring and the baffle；The retainer ring is set on the seal receptacle, for by the baffle and described close
Seal ring is limited in the seal receptacle.
To achieve the above object, the utility model provides a kind of engine, including above-mentioned circumferential sealing component.
One preferably or in alternative embodiment, the engine is gas-turbine unit.
One preferably or in alternative embodiment, the engine includes lubricating cavity and shaft, the shaft and the circumference
Seal assembly is set in the lubricating cavity, and the circumferential sealing component is set on the periphery of the shaft.
Based on above-mentioned technical proposal, the utility model at least has the advantages that：
The utility model embodiment sets the first connection structure between sealing ring and baffle, to prevent sealing ring and baffle
Relative rotation, since the first connection structure is arranged on as anti-rotation structure on the baffle and sealing ring at the sealing ring back side,
In the case where not increasing original installation procedure, the circumferential position of sealing ring is before seal receptacle is pushed into just it has been determined that assembling
Journey is simple, solves stop pin assembly manipulation difficulty existing for existing circumferential sealing component and the assembling of circumferential sealing component not
Easily, repeatedly the problem of, reduces installation period, and can effectively reduce improper assembling caused by sealing performance and service life
It influences.
Description of the drawings
Attached drawing described herein is used to provide a further understanding of the present invention, and forms the part of the application,
The illustrative embodiments and their description of the utility model are not formed for explaining the utility model to the improper of the utility model
It limits.In the accompanying drawings：
Fig. 1 is the schematic diagram of existing circumferential sealing component；
Fig. 2 is the first schematic cross-sectional view of circumferential sealing component that the utility model embodiment provides；
Fig. 3 is the second schematic cross-sectional view of circumferential sealing component that the utility model embodiment provides；
Fig. 4 is the fractionation schematic diagram of circumferential sealing component that the embodiment of the utility model provides；
Fig. 5 is the structure diagram of the first embodiment of baffle provided by the utility model；
Fig. 6 is the enlarged diagram of first boss in Fig. 5；
Fig. 7 is the enlarged diagram of second boss in Fig. 5；
Fig. 8 is the structure diagram of the second embodiment of baffle provided by the utility model；
Fig. 9 is the enlarged diagram of the first boss in Fig. 8；
Figure 10 is the structure diagram of the 3rd embodiment of baffle provided by the utility model；
Figure 11 is the structure diagram of the first embodiment of sealing ring provided by the utility model；
Figure 12 is the structure diagram of the second embodiment of sealing ring provided by the utility model；
Figure 13 is the structure diagram of seal receptacle that the utility model embodiment provides；
Figure 14 is the enlarged diagram of the partial structurtes of Figure 13.
Attached figure label：
1 '-sealing ring；2 '-stop pin；3 '-seal receptacle；4 '-circumferential tension spring；5 '-retainer ring；6 '-baffle；7 '-axial
Compressed spring；8 '-shaft；
1- seal receptacles；
2- sealing rings；
3- baffles；
41- first boss；The first grooves of 42-；
51- second boss；The second grooves of 52-；
The first elastic components of 6-；
The second elastic components of 7-；
8- retainer rings；
9- shafts.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, the technical solution in embodiment is carried out clear, complete
Ground describes.Obviously, described embodiment is only the part of the embodiment of the utility model, instead of all the embodiments.
Embodiment based on the utility model, the institute that those of ordinary skill in the art are obtained without creative efforts
There is other embodiment, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be appreciated that term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or position relationship of the instructions such as "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " is based on attached drawing institutes
The orientation or position relationship shown is for only for ease of description the utility model and simplifies description rather than instruction or imply signified
Device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that this practicality
The limitation of novel protected range.
As shown in Figure 2, Figure 3, Figure 4, the circumferential sealing component that the utility model embodiment provides, including seal receptacle 1, close
Seal ring 2 and baffle 3 are equipped with the first connection structure between sealing ring 2 and baffle 3, to limit, sealing ring 2 is opposite with baffle 3 to be turned
Dynamic, sealing ring 2 and baffle 3 are set on seal receptacle 1, and sealing ring 2 is limited in seal receptacle 1 by baffle 3, baffle 3 and seal receptacle 1 it
Between be equipped with the second connection structure, to limit the relative rotation of baffle 3 and seal receptacle 1.
The present embodiment sets the first connection structure between sealing ring 2 and baffle 3, to prevent the phase of sealing ring 2 and baffle 3
To rotation, since the first connection structure is arranged on as anti-rotation structure on the baffle 3 and sealing ring 2 at 2 back side of sealing ring, do not increasing
In the case of adding original installation procedure, the circumferential position of sealing ring 2 is before seal receptacle 1 is pushed into just it has been determined that therefore, assembling
Journey is simple, solves stop pin assembly manipulation difficulty existing for existing circumferential sealing component and the assembling of circumferential sealing component not
Easily, repeatedly the problem of, reduces installation period, and can effectively reduce abrasion of the improper assembling to 1 end face of seal receptacle, reduction pair
Influence caused by the sealing performance and service life of circumferential sealing component.
Connected structure or clamping structure etc. may be used in the first connection structure, the second connection structure in above-described embodiment
Detachable connection.
Optionally, the first connection structure can include 41 and first groove 42 of first boss to cooperate, the first groove
42 are set on one of sealing ring 2 and baffle 3, first boss 41 be set on sealing ring 2 and baffle 3 it is wherein another on.
The anti-rotation structure of 41 and first groove 42 of first boss composition in above-described embodiment is arranged on baffle 3 and sealing ring
Between 2, and baffle 3 is connect by the second connection structure with seal receptacle 1, realizes the circumferentially fixed of itself, existing so as to eliminate
The assembling process of stop pin in technology is set, does not also just have the problem of assembly manipulation is difficult.
Since circumferential sealing component provided in this embodiment is set on the periphery of shaft 9, have between shaft 9 and sealing ring 2
Rubbing action, therefore, the starting each time of shaft 9, the change of working condition all make first between sealing ring 1 and baffle 2 convex
A degree of impact is generated between 41 and first groove 42 of platform, is generated between 41 and first groove 42 of first boss to reduce
Abrasion, the cross section of the first groove 42 and first boss 41 can be fan-shaped or rectangular, during work, the first groove 42 and first
It is contacted between boss 41 for face, concentrated wear can be mitigated.
And in the prior art, stop pin on seal receptacle is straight pin, ideally stop pin with it is recessed on sealing ring
The friction of slot is linear friction, and usually sealing ring selects the delicate graphite material of brittleness, in the double action impacted and worn
Under, groove can locally generate more serious abrasion, for a long time using meeting it is possible that the integrality of sealing ring is destroyed, so as to shadow
Ring the service life of circumferential sealing component.
Circumferential sealing component provided by the embodiment, sealing ring 2 can include more than two segmental arcs, the section of sealing ring 2
Number can determine according to the design needs, and the first connection structure can be equipped between each segmental arc of sealing ring 2 and baffle 3.
The following detailed description of several embodiments of the first connection structure.
In the first embodiment of the first connection structure, as shown in figure 5, first boss 41 can be set on baffle 3, it is corresponding
, as shown in figure 11, the first groove 42 can be set on sealing ring 2.
As shown in Figure 5, Figure 6, first boss 41 is set on baffle 3, and first boss 41 can be arranged to sector, correspondingly, the
One groove 42 is set on sealing ring 2, and the first groove 42 can be arranged to sector.As shown in fig. 6, the sector of fan-shaped first boss 4
Radian a can have certain variation under the premise of the intensity for ensureing sealing ring 31.
Uniformly distributed three first boss 41 on baffle 3 shown in Fig. 5, it should be noted that the quantity should be with sealing ring 2
Hop count is consistent, and the hop count of sealing ring 2 can determine according to the design needs.
As shown in figure 8, in above-described embodiment, the first boss 41 on baffle 3 can be rectangular, and first boss 41 can be
Extend the long plateau form (as shown in Figure 9) of the entire radial direction of baffle 3 or the shorter than part of 3 radical length of baffle
Plateau form.Corresponding, the first groove 42 can be located at the part of 2 radial direction of sealing ring, can also be radially through sealing
Ring 2.
In the second embodiment of the first connection structure, as shown in Figure 10, the first groove 42 can be set on baffle 3, right
It answers, as shown in figure 12, first boss 41 can be set on sealing ring 2.
First boss 41 is set in sealing ring 2, and first boss 41 can be arranged to fan-shaped boss, corresponding first groove
42 are set on baffle 3, and the first groove 42 can be arranged to scalloped recess, the first groove 42 on baffle 3 and sealing during work
First boss 41 on ring 2 is contacted for face, mitigates local abrasion.
Uniformly distributed three the first grooves 42 on baffle 3 shown in Figure 10, it should be noted that the quantity should be with sealing ring 2
Hop count be consistent, the hop count of sealing ring 2 can determine according to the design needs.
First boss 41 on baffle 3 or on sealing ring 2 is arranged to fan-shaped boss or square boss by the present embodiment, together
When the first groove 42 on sealing ring 2 or on baffle 3 is arranged to corresponding scalloped recess or square groove, it can be made to rub
Wiping form is changed into face friction by link friction, concentrated wear is reduced, so as to ensure the integrality of sealing ring 2.
Circumferential sealing component provided by the embodiment can also include the first elastic component 6, and the first elastic component 6 is annular, due to
Sealing ring 2 includes more than two segmental arcs, and the first elastic component 6 can be used for each segmental arc connecting into sealing ring 2.Optionally,
Spring may be used in first elastic component 6.
Sealing ring 2 is circumferentially divided into several sections by the present embodiment, and the outer diameter of the shaft 9 of rotation is bound round by the first elastic component 6
On surface, primary seal interface is formed to limit the leakage of axial lubricating oil；There are suitable gap between each section of sealing ring 2, with
Compensation abrasion and manufacture, rigging error, prevent end dieback from primary seal interface being caused gap occur.
Circumferential sealing component provided by the embodiment, the second connection structure can include 51 He of second boss to cooperate
Second groove 52, the second groove 52 are set on one of baffle 3 and seal receptacle 1, and second boss 51 is set on baffle 3 and sealing
Seat 1 it is wherein another on.
This implementation, being capable of anti-the circumferentially rotating relative to seal receptacle 1 of baffle plate 3 by setting the second connection structure.
As shown in Figure 5, Figure 7, second boss 51 can be provided on baffle 3, correspondingly, as shown in Figure 13, Figure 14, it is close
The second groove 52 can be provided on envelope seat 1, and the second groove 52 can be set on the bottom of seal receptacle 1, second boss 51 can be with
Set on the outer shroud edge of baffle 3.
Optionally, the second groove 52 can be provided on baffle 3, correspondingly, second boss can be provided on seal receptacle 1
51。
As shown in Figure 2, Figure 4 shows, circumferential sealing component provided by the embodiment can also include the second elastic component 7 and retainer ring 8.
Second elastic component 7 is set between sealing ring 2 and baffle 3.Sealing ring 2 is pushed against to the sealing by grinding by the second elastic component 7
Seat 1, therefore secondary seal interface can be formed to limit the leakage of radial direction lubricating oil.Retainer ring 8 is set on seal receptacle 1, for by baffle 3
It is limited in seal receptacle 1 with sealing ring 2.Optionally, spring may be used in the second elastic component 7.
The assembling process of circumferential sealing component provided by the embodiment is：Sealing ring 2 is by 6 banding of the first elastic component in shaft
9, the compression of the second elastic component 7 is assembled to sealing ring 2, then connect sealing ring 2 by the first connection structure with baffle 3, then
Seal receptacle 1 is pushed axially toward sealing ring 2, at this time, it is only necessary to the visible second connection knot being aligned between baffle 3 and seal receptacle 1
Structure, you can complete the assembling of circumferential sealing component.
By the description of above-mentioned each embodiment, the positional precision of the anti-rotation structure of circumferential sealing component provided by the embodiment
Than existing scheme higher, processing is simple, and under the premise of original assembly process is not increased, the circumferential position of sealing ring 2 is pushing away
Enter before seal receptacle 1 just it has been determined that assembling process is simple, reduce installation period, sealing can be reduced during working at the same time
The concentrated wear of seat 1 and sealing ring 2 increases service life.
Further, in the utility model embodiment the anti-rotation groove (the second groove 52) of seal receptacle 1 positioned at seal receptacle 1
Sealing area is discharged in bottom in time after being conducive to lubrication leakage, reduces the catching fire of lubricating oil, coking risk.
Further, it is close under the premise of rigidity and intensity is ensured since seal receptacle 1 does not need to design anti-rotation pin hole
The thickness for sealing seat 1 can be thinner than the prior art, so as to mitigate the overall weight of circumferential sealing component.Meanwhile seal receptacle 1
The reduction of thickness can increase the heat exchange on 1 surface of seal receptacle and lubricating oil environment, make the temperature of seal receptacle 1 reduce, close so as to reduce
The temperature of rubbing surface is sealed, is conducive to extend the service life of circumferential sealing component.
In addition, the anti-rotation structure of sealing ring 2 is designed at non-tight face (one side opposite with baffle 3 of sealing ring 2), sealing ring
2 radial thickness can also become smaller, and be conducive to the compact design of entire sealing device.
The present embodiment additionally provides a kind of engine, including above-mentioned circumferential sealing component.
Engine in above-described embodiment can be gas-turbine unit, can be applied to aviation field.
Engine in above-described embodiment can include lubricating cavity and shaft, and shaft and circumferential sealing component are set on lubricating cavity
Interior, circumferential sealing component is set on the periphery of shaft.
Since the engine that the utility model embodiment provides uses the circumferential sealing group of the utility model embodiment offer
Part, therefore, the engine that the utility model embodiment provides have the circumferential sealing of the utility model embodiment offer accordingly
The advantageous effect of component, details are not described herein.
In the description of the present invention, it is to be appreciated that limiting zero using the words such as " first ", " second "
Part, it is only for convenient for being distinguished to above-mentioned parts, such as without Stated otherwise, above-mentioned word there is no particular meaning,
Therefore it is not intended that limitation to scope of protection of the utility model.
Finally it should be noted that:Above example is only to illustrate the technical solution of the utility model rather than it is limited
System；Although the utility model is described in detail with reference to preferred embodiment, those of ordinary skill in the art should
Understand：It can still modify to specific embodiment of the present utility model or some technical characteristics are equally replaced
It changes；Without departing from the spirit of technical solutions of the utility model, should all cover in the claimed technical solution of the utility model
In range.
Claims (11)
1. a kind of circumferential sealing component, it is characterised in that：Including seal receptacle (1), sealing ring (2) and baffle (3), the sealing ring
(2) the first connection structure is equipped between the baffle (3), the sealing ring (2) is opposite with the baffle (3) to be turned to limit
Dynamic, the sealing ring (2) and the baffle (3) are between the seal receptacle (1), the baffle (3) and the seal receptacle (1)
Equipped with the second connection structure, to limit the relative rotation of the baffle (3) and the seal receptacle (1).
2. circumferential sealing component as described in claim 1, it is characterised in that：First connection structure includes what is cooperated
First boss (41) and the first groove (42), first groove (42) is set on its of the sealing ring (2) and the baffle (3)
One of on, the first boss (41) set on the sealing ring (2) and the baffle (3) it is wherein another on.
3. circumferential sealing component as claimed in claim 2, it is characterised in that：First groove (42) and the first boss
(41) fan-shaped cross section or rectangular.
4. circumferential sealing component as described in claim 1, it is characterised in that：The sealing ring (2) includes more than two arcs
Section, the first connection structure is equipped between each segmental arc and the baffle (3).
5. circumferential sealing component as described in claim 1, it is characterised in that：Including the first elastic component (6), the sealing ring
(2) including more than two segmental arcs, first elastic component (6) is annular, described close for each segmental arc to be connected into
Seal ring (2).
6. circumferential sealing component as described in claim 1, it is characterised in that：Second connection structure includes what is cooperated
Second boss (51) and the second groove (52), second groove (52) is set on its of the baffle (3) and the seal receptacle (1)
One of on, the second boss (51) set on the baffle (3) and the seal receptacle (1) it is wherein another on.
7. circumferential sealing component as claimed in claim 6, it is characterised in that：The second boss (51) is set on the baffle
(3), second groove (52) is set on the seal receptacle (1), and the second groove (52) is set on the bottom of the seal receptacle (1),
The second boss (51) is set on the outer shroud edge of the baffle (3).
8. circumferential sealing component as described in claim 1, it is characterised in that：Including the second elastic component (7) and retainer ring (8), institute
The second elastic component (7) is stated between the sealing ring (2) and the baffle (3)；The retainer ring (8) is set on the seal receptacle
(1), it is interior for the baffle (3) and the sealing ring (2) to be limited in the seal receptacle (1).
9. a kind of engine, it is characterised in that：Including such as claim 1~8 any one of them circumferential sealing component.
10. engine as claimed in claim 9, it is characterised in that：The engine is gas-turbine unit.
11. engine as claimed in claim 9, it is characterised in that：Including lubricating cavity and shaft (9), the shaft (9) and institute
Circumferential sealing component is stated in the lubricating cavity, the circumferential sealing component is set on the periphery of the shaft (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721422871.8U CN207569192U (en) | 2017-10-31 | 2017-10-31 | Circumferential sealing component and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721422871.8U CN207569192U (en) | 2017-10-31 | 2017-10-31 | Circumferential sealing component and engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207569192U true CN207569192U (en) | 2018-07-03 |
Family
ID=62692715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721422871.8U Active CN207569192U (en) | 2017-10-31 | 2017-10-31 | Circumferential sealing component and engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207569192U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728084A (en) * | 2020-12-24 | 2021-04-30 | 中国航发长江动力有限公司 | Metal sealing ring processing method and metal sealing ring |
| CN112855940A (en) * | 2021-02-18 | 2021-05-28 | 中国航发沈阳发动机研究所 | Graphite circumference seal structure |
| CN115008407A (en) * | 2021-03-03 | 2022-09-06 | 中国航发商用航空发动机有限责任公司 | Positioning and mounting tool |
| CN115008409A (en) * | 2021-03-03 | 2022-09-06 | 中国航发商用航空发动机有限责任公司 | Mounting tool for assembling cylindrical body and pin |
| CN115008408A (en) * | 2021-03-03 | 2022-09-06 | 中国航发商用航空发动机有限责任公司 | Mounting tool |
| CN115008410A (en) * | 2021-03-03 | 2022-09-06 | 中国航发商用航空发动机有限责任公司 | Anti-rotation pin mounting tool |
-
2017
- 2017-10-31 CN CN201721422871.8U patent/CN207569192U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728084A (en) * | 2020-12-24 | 2021-04-30 | 中国航发长江动力有限公司 | Metal sealing ring processing method and metal sealing ring |
| CN112728084B (en) * | 2020-12-24 | 2023-04-14 | 中国航发长江动力有限公司 | Metal sealing ring processing method and metal sealing ring |
| CN112855940A (en) * | 2021-02-18 | 2021-05-28 | 中国航发沈阳发动机研究所 | Graphite circumference seal structure |
| CN115008407A (en) * | 2021-03-03 | 2022-09-06 | 中国航发商用航空发动机有限责任公司 | Positioning and mounting tool |
| CN115008409A (en) * | 2021-03-03 | 2022-09-06 | 中国航发商用航空发动机有限责任公司 | Mounting tool for assembling cylindrical body and pin |
| CN115008408A (en) * | 2021-03-03 | 2022-09-06 | 中国航发商用航空发动机有限责任公司 | Mounting tool |
| CN115008410A (en) * | 2021-03-03 | 2022-09-06 | 中国航发商用航空发动机有限责任公司 | Anti-rotation pin mounting tool |
| CN115008410B (en) * | 2021-03-03 | 2023-09-26 | 中国航发商用航空发动机有限责任公司 | Anti-rotation pin mounting tool |
| CN115008408B (en) * | 2021-03-03 | 2023-10-31 | 中国航发商用航空发动机有限责任公司 | Mounting tool |
| CN115008407B (en) * | 2021-03-03 | 2023-10-31 | 中国航发商用航空发动机有限责任公司 | Positioning and mounting tool |
| CN115008409B (en) * | 2021-03-03 | 2023-12-05 | 中国航发商用航空发动机有限责任公司 | Mounting tool for assembling cylindrical body and pin |
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