CN214146023U

CN214146023U - Gas turbine, fan component and runner plate assembly thereof

Info

Publication number: CN214146023U
Application number: CN202120011082.5U
Authority: CN
Inventors: 喻思; 李昕雪; 孙海育
Original assignee: AECC Commercial Aircraft Engine Co Ltd
Current assignee: AECC Commercial Aircraft Engine Co Ltd
Priority date: 2021-01-05
Filing date: 2021-01-05
Publication date: 2021-09-07
Anticipated expiration: 2031-01-05

Abstract

An object of the utility model is to provide a runner plate subassembly can solve the problem of at least one aspect that exists among the prior art. Another object of the present invention is to provide a fan assembly. It is a further object of the present invention to provide a gas turbine. The runner plate assembly comprises a runner plate and a sealing strip, the runner plate comprises a runner plate body and a reinforcing rib, the sealing strip is provided with a protective edge, and at least one part of the protective edge is connected with the side wall of the runner plate body in an assembling state. A connecting opening is formed in the reinforcing rib, a connecting convex part is arranged on the sealing strip in a protruding mode, and the connecting convex part is inserted into the connecting opening in the assembling state. The end part of the connecting convex part after penetrating through the connecting opening is provided with a limiting part, the limiting part is made of elastic materials, and the limiting part is matched with the reinforcing rib to limit the connecting convex part to be separated from the connecting opening.

Description

Gas turbine, fan component and runner plate assembly thereof

Technical Field

The utility model relates to a gas turbine, fan part and runner plate subassembly thereof.

Background

The axial-flow type aeroengine's air current gets into outer culvert runner and inner culvert runner respectively after fan rotor blade pressure boost, and the air current of outer culvert runner flows to the engine afterbody behind the export stator of outer culvert, provides thrust, and the air current of inner culvert runner gets into the core machine after passing through pressure boost level rotor blade pressure boost.

Referring to fig. 1, which is a partial cross-sectional view of a conventional fan assembly, a flow passage plate 91 is disposed between fan rotor blades 92, and cooperates with the blades 92 to form an aerodynamic flow passage, which satisfies aerodynamic design requirements. Fig. 2 is a schematic top view showing a conventional flow field plate, and fig. 3 is a schematic cross-sectional view taken along the direction E-E in fig. 2. In order to meet the sealing requirements of the fan rotor blades, the flow channel plate 91 is provided with sealing strips 94 on both sides, and fig. 4 shows a schematic diagram of the existing sealing strips 94. Wherein, the sealing strip 94 is matched with the blade 92 in the working state to seal, thereby reducing gas leakage, reducing pneumatic loss and improving the efficiency of the engine.

When the engine is in a working state, if the binding force of the sealing strip and the runner plate is smaller than the centrifugal force applied to the sealing strip, the sealing strip can be separated from the runner plate, so that other blades are damaged, the unbalance of an engine rotor is increased, the engine stops, the pneumatic loss is increased, the efficiency is reduced, the oil consumption rate of the engine is increased, and the cost is increased.

In order to prevent the seal strip and the runner plate from being separated, the seal strip 94 and the runner plate 91 are assembled by adhering or integrally vulcanizing at the mating surface 95.

However, the inventors have found that the conventional assembly structure between the seal strip 94 and the flow path plate 91 has the following problems in the case of the adhesive bonding or the integral vulcanization at the mating surface 95:

1) the axial and circumferential positions of the sealing strip 94 are not constrained, and the assembly is easy to deviate, so that the sealing effect is poor, the pneumatic loss is increased, and the efficiency of the engine is reduced;

2) by adopting the adhesive bonding scheme, the bonding strength is low, the sealing strip 94 and the runner plate 91 are easy to separate, and the reliability is poor;

3) the whole vulcanization scheme has the advantages of complex process, high processing cost, difficulty in replacement and high maintenance cost.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a runner plate subassembly can solve the problem of at least one aspect that exists among the prior art.

It is another object of the present invention to provide a fan assembly, which includes the above-mentioned flow channel plate assembly.

It is a further object of the present invention to provide a gas turbine engine including a fan assembly as described above.

The runner plate assembly comprises a runner plate and a sealing strip, wherein the runner plate comprises a runner plate body and a reinforcing rib, the runner plate body is provided with a first surface, the sealing strip is provided with a protective edge and a second surface, the first surface is connected with the second surface in an assembling state, and at least one part of the protective edge is connected with the side wall of the runner plate body;

one end of the reinforcing rib, which is close to the first surface, is provided with at least one connecting opening, one side of the sealing strip, which is opposite to the runner plate, is convexly provided with at least one connecting convex part, and the connecting convex part is inserted into the connecting opening in an assembling state;

the end part of the connecting convex part after penetrating through the connecting opening is provided with a limiting part, the limiting part is made of elastic materials, and the limiting part is matched with the reinforcing rib to limit the connecting convex part to be separated from the connecting opening.

In one or more embodiments, the stopper portion has a guide portion on an outer side in the fitting direction.

In one or more embodiments, the stopper portion is a protrusion protruding from the connection protrusion toward both sides, and the guide portion is a chamfer provided on the protrusion.

In one or more embodiments, the stopper portion has a relatively thicker thickness in the connecting projection.

In one or more embodiments, the connection openings are formed at intervals in the longitudinal direction of the flow field plate, and the connection protrusions are formed at intervals in the longitudinal direction of the sealing strip corresponding to the positions and the number of the connection openings.

In one or more embodiments, the sealing strip is made of an elastic material.

In one or more embodiments, the reinforcing ribs are two provided on the flow field plate body, each of the reinforcing ribs being provided with the connection opening;

correspondingly, the sealing strips are connected with the connecting openings through the connecting convex parts respectively.

In one or more embodiments, the first surface and the connecting protrusion and/or the second surface are coated with an adhesive.

The fan component for realizing the other purpose comprises fan blades and a runner plate component arranged between the fan blades, wherein the runner plate component is the runner plate component;

the sealing strips are arranged between the runner plate and the fan blades, and the connecting surfaces of the sealing strips positioned on the two sides of the fan blades and the fan blades respectively have a contour which is conformal with a blade basin or a blade back of the fan blades.

To achieve still another of the foregoing objects, a gas turbine engine includes a fan assembly as set forth above.

The utility model discloses an advance effect includes following one or combination:

1) through in the opposite side of the sealing strip safe edge place side, set up spacing portion and stiffening rib cooperation inconsistent, can prevent that the sealing strip from deviating from the flow channel board along the direction opposite with the installation direction to guaranteed that the sealing strip is difficult for rocking after assembling on the flow channel board and droing.

2) The utility model discloses simple structure, cooperation structure realize axial and circumference location, easily installation, and is sealed effectual, can reduce engine efficiency loss, and the later stage is convenient for change and maintenance simultaneously reduces the maintenance cost.

Drawings

The above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings, in which:

FIG. 1 illustrates a partial cross-sectional schematic view of a prior art fan assembly;

FIG. 2 shows a schematic top view of a prior art flow field plate;

FIG. 3 is a schematic cross-sectional view taken along the direction E-E in FIG. 2;

fig. 4 shows a schematic view of a prior art sealing strip structure.

FIG. 5 illustrates a schematic front view of one embodiment of the present flow field plate assembly;

FIG. 6 is a schematic cross-sectional view of FIG. 5 taken along the line A-A;

FIG. 7 is a schematic view of an embodiment of a flow field plate in front view;

FIG. 8 is a schematic top view of one embodiment of a seal strip;

FIG. 9 is a schematic view of the front of one embodiment of a seal;

FIG. 10 is a schematic cross-sectional view of FIG. 9 taken along the direction C-C;

FIG. 11 is a schematic top view of another embodiment of a seal strip;

FIG. 12 is a schematic view of one embodiment of the present fan assembly;

FIG. 13 is a schematic view of an embodiment of the present gas turbine.

Detailed Description

The following discloses many different embodiments or examples for implementing the subject technology described. Specific examples of components and arrangements are described below to simplify the present disclosure, but these are merely examples and are not intended to limit the scope of the present disclosure. Additionally, reference numerals and/or letters may be repeated among the various examples throughout this disclosure. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

Also, the present application uses specific words to describe embodiments of the application, such as "one embodiment," "an embodiment," and/or "some embodiments" to mean that a particular feature, structure, or characteristic described in connection with at least one embodiment of the application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, some features, structures, or characteristics of one or more embodiments of the present application may be combined as appropriate. In addition, the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms do not have special meanings, and therefore, the scope of the present invention should not be construed as being limited.

It should be noted that, where used, the upper, lower, top, and bottom in the following description are used for convenience only and do not imply any particular fixed orientation. In fact, they are used to reflect the relative position and/or orientation between the various parts of the object.

It should be noted that these and other figures are given by way of example only and are not drawn to scale, and should not be construed as limiting the scope of the invention as it is actually claimed. Further, the conversion methods in the different embodiments may be appropriately combined.

It will be appreciated that the reference system used hereinafter is independent of the reference system used in the background.

The problem that the strip of obturating that exists easily drops in solving current runner plate subassembly, an aspect of the utility model provides a runner plate subassembly. Fig. 5 is a schematic front view showing an embodiment of the flow field plate assembly, and fig. 6 is a schematic sectional view of fig. 5 taken along a direction a-a.

The flow channel plate assembly comprises a flow channel plate 1 and a sealing strip 2, as shown in fig. 7, fig. 8, fig. 9 and fig. 10, a schematic sectional view of fig. 9 is a sectional view of fig. 9 cut in a direction C-C, wherein the schematic sectional view is a schematic sectional view of fig. 7 and a schematic top view of an embodiment of the flow channel plate, the schematic top view of an embodiment of the sealing strip.

The flow channel plate 1 includes a flow channel plate body 11 and a reinforcing rib 12, the upper surface of the flow channel plate body 11 is a flow channel surface 1a of the flow channel plate, the flow channel plate body 11 further has a first surface 1b, the first surface 1b is a lower surface opposite to the flow channel surface 1a and arranged on the flow channel plate body 11, and the reinforcing rib 12 is convexly arranged from the first surface 1b and used for enhancing the overall structural strength of the flow channel plate 1.

The seal strip 2 has a bead 21 and a second surface 2b, and in the assembled state shown in fig. 6, the first surface 1b is in contact with the second surface 2b, and the upper half of the bead 21 is in contact with the side wall of the flow path plate body 11.

Referring to fig. 7, at least one connection opening 120 is opened in one end of the reinforcing rib 12 adjacent to the first surface 1b, and at least one connection protrusion 22 is provided in the seal 2 on a side opposite to the flow field plate 1, and in the assembled state as shown in fig. 6, the connection protrusion 22 is inserted into the connection opening 120 to complete the assembly.

As shown in fig. 8, the end of the connecting protrusion 22 passing through the connecting opening 120 has a stopper 23, and the stopper 23 is made of an elastic material such as rubber. Under the action of external force, the limiting part 23 can be compressed, so that the limiting part 23 is compressed and elastically retracted in the process that the connecting convex part 22 passes through the connecting opening 120, after the connecting convex part 22 passes through the connecting opening 120, the limiting part 23 elastically extends out, so that when the sealing strip 2 is about to be separated from the runner plate 1 in the direction opposite to the assembling direction, the limiting part 23 is matched and abutted against the reinforcing rib 12, and the connecting convex part 22 is limited to be separated from the connecting opening 120.

In the assembled state, in one side of the sealing strip 2, the upper half part of the protective edge 21 is connected with the side wall of the runner plate body 11, and the limiting part 23 is arranged in the other side of the sealing strip 2 to be matched and abutted with the reinforcing rib 12, so that the sealing strip 2 is not easy to shake and fall off after being assembled on the runner plate 1.

While one embodiment of the present flow field plate assembly is described above, in other embodiments of the present flow field plate assembly, the present flow field plate assembly may have many more details than the embodiments described above, and at least some of these details may vary widely. At least some of these details and variations are described below in several embodiments.

As shown in fig. 8, in one embodiment of the flow channel plate assembly, the stopper portion 23 further has a guide portion 23a on the outer side in the assembling direction, the guide portion 23a can be in contact fit with the connection opening 120, and the guide stopper portion 23 is elastically compressed so that the connection protrusion 22 can smoothly pass through the connection opening 120, thereby completing the assembly.

Specifically, in one embodiment of the flow channel plate assembly, the stopper portion 23 is a projection provided to project from the body of the connecting projection 22 toward both sides, and the guide portion 23a is a chamfer provided outside the projection.

In one embodiment of the flow channel plate assembly, as shown in fig. 10, the portion of the connecting protrusion 22 where the stopper 23 is located has a relatively thicker thickness than other portions of the connecting protrusion 22, so that a larger contact area with the reinforcing rib 12 can be obtained, and the fitting and stopping effect is good.

In one embodiment of the flow field plate assembly, the connecting openings 120 are spaced along the length of the flow field plate 1, such as 3, 4 or 5, and correspondingly, the connecting protrusions 22 are spaced along the length of the sealing strip 2 corresponding to the positions and numbers of the connecting openings 120. It will be appreciated that in some embodiments different from those shown, the number of connection openings and connection projections may be a suitable number, such as 1 or 2, according to the actual operating conditions.

In one embodiment of the flow field plate assembly, the seal strip 2 is made entirely of a resilient material, such as rubber. In another embodiment, only the positioning portion 22 may be made of an elastic material.

In one embodiment of the flow field plate assembly, the reinforcing ribs 12 are two as shown in fig. 6 provided on the flow field plate body 11, and a connecting opening 120 is opened on each reinforcing rib 12. Correspondingly, the sealing strips 2 are also arranged on two sides of the flow channel plate 1 corresponding to the two reinforcing ribs 12, and each sealing strip 2 is respectively connected with the connecting opening 120 through the connecting convex part 22 in a matching way.

In one embodiment of the flow field plate assembly, the first surface 1b and the connecting protrusion 22 and/or the second surface 2b are coated with an adhesive to further increase the strength of the connection between the flow field plate 1 and the seal strip 2.

The flow field plate assembly as in one or more of the embodiments described above may be applied to a fan component as shown in fig. 12, wherein the fan component includes fan blades 3 and a flow field plate assembly disposed between the fan blades 3. The sealing strips 2 are arranged between the runner plate 1 and the fan blades 3, and the contact surfaces 25 of the sealing strips 2 and the fan blades on the two sides of the fan blades 3 respectively have a contour which is conformal with the basin or the back of the fan blades. The seal strip 2 as shown in fig. 8 has an abutment surface 25 conforming to the basin side of the fan blade 3, and the seal strip 2 shown in fig. 11 has an abutment surface 25 conforming to the back side of the fan blade 3.

The fan assembly as described above may be used in a gas turbine engine as shown in FIG. 13.

The flow channel plate assembly assembling process is as follows: the first surface 1b of the sealing strip 2 and the surface of the connecting convex part 22 are coated with adhesive, then the connecting convex part 22 is assembled into the runner plate connecting opening 120, because the material of the sealing strip 2 has certain compressibility, the installation pressure is greater than the compressive deformation force of the connecting convex part 22 during installation, thus realizing the assembly of the connecting convex part 22 and the connecting opening 120, and finally the assembly is completed after bonding and curing. The working principle is as follows: the combination force of the sealing strip 2 and the runner plate 1 is provided by two parts, one part is the bonding force provided by the adhesive, and the other part is the deformation force provided by the limiting part 23 in the connecting convex part 22, so that the resultant force of the sealing strip and the connecting convex part is greater than the centrifugal force, the reliability is increased, and the risk of separation of the sealing strip is reduced.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modification, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention, all without departing from the content of the technical solution of the present invention, fall within the scope of protection defined by the claims of the present invention.

Claims

1. A flow channel plate assembly comprises a flow channel plate and a sealing strip, wherein the flow channel plate comprises a flow channel plate body and a reinforcing rib, the flow channel plate body is provided with a first surface, the sealing strip is provided with a protecting edge and a second surface, the first surface is connected with the second surface in an assembling state, and at least one part of the protecting edge is connected with the side wall of the flow channel plate body; the method is characterized in that:

2. The flow field plate assembly of claim 1, wherein the stopper portion has a guide portion on an outer side in the fitting direction.

3. The flow field plate assembly as claimed in claim 2, wherein the stopper portion is a projection projecting from the connecting projection toward both sides, and the guide portion is a chamfer provided on the projection.

4. The flow path plate assembly according to claim 3, wherein the stopper portion has a relatively thicker thickness in the connection protrusion portion.

5. The flow field plate assembly as claimed in claim 1, wherein the connecting openings are formed in a plurality at intervals along a length direction of the flow field plate, and the connecting protrusions are formed in a plurality at intervals along a length direction of the sealing strip corresponding to positions and numbers of the connecting openings.

6. The flow field plate assembly of claim 1, wherein the seal strip is made of an elastomeric material.

7. The flow field plate assembly as claimed in claim 1 wherein said reinforcing ribs are two provided on said flow field plate body, each of said reinforcing ribs being provided with said connection opening;

8. The flow field plate assembly of claim 1, wherein the first surface and the connecting boss and/or the second surface are coated with an adhesive.

9. A fan component comprising fan blades and a flow channel plate assembly disposed between the fan blades, wherein the flow channel plate assembly is as claimed in any one of claims 1 to 8;

10. A gas turbine engine comprising the fan assembly of claim 9.