CN215860358U - Intermediate case assembly, gas turbine engine and vehicle - Google Patents

Abstract

The utility model relates to an intermediate case assembly, a gas turbine engine and a vehicle. Wherein the intermediate case comprises a case; a bearing seat located radially inside the casing; the oil supply assembly comprises an oil supply pipeline and a nozzle, so that lubricating oil is transported through the oil supply pipeline and sprayed out of the nozzle; the nozzles comprise a first bearing nozzle and a second bearing nozzle, and the axial positions of the first bearing nozzle and the second bearing nozzle are adjacent to the bearing seat. The utility model has the advantages of compact structure of the intermediate casing component, easy assembly and reduction of the manufacturing and assembly difficulty of the lubricating oil system.

Description

Intermediate case assembly, gas turbine engine and vehicle

Technical Field

The utility model relates to the field of energy power, in particular to an intermediate casing assembly, a gas turbine engine and a vehicle.

Background

In the prior art, an intermediate casing assembly of a gas turbine engine generally includes an outer casing, an inner casing, a support plate, 1, 2 fulcrum mounts, and a central transmission Gearbox (IGB) mount. The weight of the whole machine is high due to more parts, the thrust-weight ratio is further improved and limited, and meanwhile, the reliability of the whole machine is poor and the assembly difficulty is high due to more parts.

Accordingly, there is a need in the art for an intermediate case assembly, a gas turbine engine, and a vehicle that simplifies the structure of the gas turbine engine, reduces assembly difficulties, increases reliability, and reduces manufacturing and assembly difficulties of the lubrication oil system.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an intermediate casing assembly.

It is also an object of the present invention to provide a gas turbine engine.

The utility model also aims to provide a vehicle.

An intermediate case assembly according to an aspect of the present invention includes a case; a bearing seat located radially inside the casing; and the oil supply assembly comprises an oil supply pipeline and a nozzle, so that lubricating oil is transported through the oil supply pipeline and sprayed out of the nozzle, wherein the nozzle comprises a first bearing nozzle and a second bearing nozzle, and the axial positions of the first bearing nozzle and the second bearing nozzle are adjacent to the bearing seat.

In one or more embodiments of the intermediate case assembly, the bearing seat comprises: the connecting part extends outwards from the body of the bearing seat in the radial direction and is used for being connected with the casing; the stop portion extends radially inward from the body of the bearing housing for stopping axial movement of a bearing carried by the bearing housing.

In one or more embodiments of the intermediate casing assembly, the nozzle further includes a third nozzle, a fourth nozzle, and a fifth nozzle, which are branched from both axial sides of the oil supply line with the first bearing nozzle and the second bearing nozzle, respectively.

In one or more embodiments of the intermediate casing assembly, the inner wall of the casing has a first sealing area and a second sealing area axially located at two axial ends of the casing, respectively, and the first sealing area is located axially upstream of the second sealing area.

In one or more embodiments of the intermediate case assembly, the sealing structure of the sealing zone comprises a coating, a honeycomb, a graphite seal, a brush seal.

In one or more embodiments of the intermediate casing assembly, the first and second bearing nozzles have the same axial position, and the first bearing nozzle is radially inward relative to the second bearing nozzle.

In one or more embodiments of the intermediate case assembly, the bearing seat is integral with the case.

A gas turbine engine according to an aspect of the present invention comprises the casing, the rotor, the main bearing of any one of the above; wherein the rotor is supported by the main bearing, the main bearing is supported by the bearing housing, and the oil supply unit supplies lubricating oil to the main bearing.

In one or more embodiments of the gas turbine engine, the gas turbine engine further includes a central transmission gearbox located in the installation space provided by the casing, and the oil supply assembly further supplies lubricating oil to the central transmission gearbox.

According to one aspect of the utility model, the gas turbine engine comprises any one of the above, and the gas turbine engine provides power for the vehicle to drive the vehicle to move.

The utility model has the advantages that the structure of the intermediate casing assembly is compact and easy to assemble by setting the position relation between the bearing seat and the casing and the position relation between the bearing seat and the nozzle, and the manufacturing and assembling difficulty of the lubricating oil system is reduced.

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 is a schematic structural diagram of an intermediate casing assembly according to the prior art.

FIG. 2 is a schematic diagram of an intermediate casing assembly according to an embodiment.

Fig. 3 is a schematic structural diagram of a bearing seat of an intermediate casing assembly according to an embodiment.

FIG. 4 is a schematic diagram of a nozzle of an oil supply assembly of an intermediate casing assembly according to one embodiment.

Reference numerals:

10-intermediary cartridge assembly

1-casing

111-first seal zone

112-second sealing zone

2-bearing seat

21-connecting part

22-body

23-stop part

3-oil supply assembly

31-oil supply line

32-nozzle

321-first bearing nozzle

322-second bearing nozzle

323-third nozzle

324-fourth nozzle

325-fifth nozzle

Detailed Description

The present invention is further described in the following description with reference to specific embodiments and the accompanying drawings, wherein the details are set forth in order to provide a thorough understanding of the present invention, but it is apparent that the present invention can be embodied in many other forms different from those described herein, and it will be readily appreciated by those skilled in the art that the present invention can be implemented in many different forms without departing from the spirit and scope of the utility model.

Also, this application uses specific language to describe embodiments of the application. The terms "inside" and "outside" refer to the inner and outer parts relative to the outline of each part itself, and the terms "first", "second", "third", and the like are used to define the parts, and are used only for the convenience of distinguishing the corresponding parts, and unless otherwise stated, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited. Reference to "one or more embodiments," "an embodiment," and/or "some embodiments" means 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 "one or more embodiments," "an embodiment," and/or "some embodiments" 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.

As shown in fig. 1, the intermediate casing assembly 20 of the prior art, which includes an outer casing 201, an inner casing 202, support plates 203, 1, 2 fulcrum mounts 204, and an IGB mount 205, is described first to illustrate the technical effect of the intermediate casing assembly 10 compared to the intermediate casing assembly 10 of the present embodiment.

The intermediate casing assembly of the following embodiments is exemplified by an intermediate casing assembly of a gas turbine engine, the gas turbine engine includes a rotor, a main bearing, and a central transmission gear box, the rotor is supported by the main bearing, the main bearing is supported by the bearing seat, the central transmission gear box is located in an installation space provided by the intermediate casing assembly, and an oil supply assembly supplies lubricating oil to the main bearing and the central transmission gear box.

Referring to fig. 2 to 4, in some embodiments, the intermediate casing assembly 10 includes a casing 1, a bearing housing 2, and an oil supply assembly 3. The casing 1 may include an inner casing 11 and an outer casing 12. The bearing housing 2 is located radially inside the casing 1, and the oil supply unit 3 includes an oil supply line 31 and a nozzle 32, so that the lubricating oil is transported through the oil supply line 31 to be sprayed from the nozzle 32 to the parts requiring lubrication. The nozzles 32 comprise at least a first bearing nozzle 321 and a second bearing nozzle 322, which are axially positioned adjacent to the bearing housing 2 so as to adequately lubricate the bearings supported by the bearing housing 2.

In some embodiments, as shown in fig. 2 and 4, the specific structure of the nozzle 32 may be that the axial positions of the first bearing nozzle 321 and the second bearing nozzle 322 are the same, and it is understood that the same is not exactly the same here, but is the same at the approximate axial position. The first bearing nozzle 321 and the second bearing nozzle 322 are spaced apart from each other in the radial direction, and the first bearing nozzle 321 is located radially inward of the second bearing nozzle 322, that is, the second bearing nozzle 322 can lubricate the outer ring of the bearing, and the first bearing nozzle 321 can sufficiently lubricate the inner ring of the bearing.

With continued reference to fig. 2 and 4, the nozzle 32 may further include a third nozzle 323, a fourth nozzle 324, and a fifth nozzle 325, which are branched from the first bearing nozzle 321 and the second bearing nozzle 322 respectively at both axial sides of the oil supply line 31. The third and fourth nozzles 323 and 324 may spray the lubricating oil to both driving bearings of a driven bevel gear of a central driving gearbox (IGB), and the fifth nozzle 325 may spray the lubricating oil to a bevel gear of the IGB, so that the lubrication and cooling of the central driving gearbox may be ensured through a simple and compact structure.

It can be understood that the above-described embodiments have the beneficial effects that the intermediate casing assembly 10 is compact in structure through the positional relationship between the bearing seat 2 and the casing 1 and the positional relationship between the bearing seat 2 and the nozzle 32, that is, the intermediate casing assembly 10 adopts a simple and compact structure to support and lubricate a corresponding bearing and a central transmission gearbox in the gas turbine engine, so that the assembly is easy, and the manufacturing and assembling difficulty of the lubricating oil system is also reduced.

In one or more embodiments, as shown in fig. 2 and 3, the bearing seat 2 may include a connecting portion 21, a body 22, and a stop portion 23. As shown in fig. 3, the connecting portion 21 may extend radially outward from a body 22 of the bearing housing for connection with the casing 1. And a stopper portion 23 extends radially inward from the bearing housing 2 for stopping axial movement of a bearing carried by the bearing housing 2. The stopper 23 may have a simple shoulder structure as shown in fig. 3. The body 22 may be simply cylindrical in shape, radially accommodating the outer race of the support bearing. Namely, reliable support of the bearing is achieved by a simple structure. In some embodiments, the bearing seat 2 and the casing 1 may be a single piece, that is, the bearing seat 2 itself is a single piece, as shown in fig. 3, the connecting portion 21 and the body portion 22 and the stopping portion 23 are a single piece, and the single piece of the bearing seat 2 and the casing 1 are integrally connected through the connecting portion 21, so that the number of connecting members and connecting structures in the intermediate casing assembly 10 can be reduced, the reliability is improved, and the assembly difficulty is reduced. However, it is not limited thereto, and those skilled in the art can understand that the technical solution of separately connecting the bearing seat 2 and the casing 1 is also possible.

In contrast to the intermediate casing assembly 20 of fig. 1, the intermediate casing assembly 10 of the embodiment shown in fig. 2 does not have the 1, 2 fulcrum assembly mount 204 and the IGB mount 205, and the bearing housing 2 supports the main bearings, i.e., the high-pressure rotor and the low-pressure rotor can be supported only by the main bearings supported by the bearing housing 2. Therefore, because the corresponding rotors have different structures, the rotor corresponding to the intermediary casing assembly 10 of the embodiment is a structure in which the high-pressure rotor and the low-pressure rotor are sleeved, and therefore, bearings corresponding to the 1 and 2 fulcrums do not need to be arranged, and the 1 and 2 fulcrum assembly mounting seats 204 do not need to be arranged.

Further, for the case 1, a sealing structure may be further provided to reliably seal the rotor corresponding to the intermediate case assembly 10. As shown in fig. 2, in some embodiments, the inner wall of the casing 1 has a first sealing region 111 and a second sealing region 112, which are respectively located at two axial ends of the casing 1 in the axial direction, and the first sealing region 111 is located axially upstream of the second sealing region 112. The two axial ends described above may not be strictly end positions, or may be regions near the end positions. Therefore, the low-pressure rotor at the middle upstream and the high-pressure rotor at the downstream of the rotor can be tightly sealed, so that the reliability of the gas turbine engine is improved, and the oil consumption is reduced. The sealing structures of the first sealing area 111 and the second sealing area 112 may be simple and reliable sealing structures such as a sealing coating, a honeycomb structure, a graphite seal, a brush seal, etc., and those skilled in the art can flexibly select the sealing structures according to the specific requirements of sealing.

In addition, it can be understood by those skilled in the art that the gas turbine engine described in the above embodiments is generally applicable to an aircraft as an aircraft engine, but is not limited thereto, and may also be applicable to a ship, for example, the gas turbine engine is a gas turbine for a ship, and is used as a power of a water vehicle such as a ship, a yacht, a naval vessel, etc. to drive the ship to move.

In summary, the intermediate casing assembly, the gas turbine engine and the vehicle adopting the above embodiments have the advantages that the intermediate casing assembly is compact in structure and easy to assemble, and the manufacturing and assembling difficulty of the lubricating oil system is also reduced by setting the position relationship between the bearing seat and the casing and the position relationship between the bearing seat and the nozzle.

Although the present invention has been disclosed in terms of the preferred embodiment, it is not intended to limit the utility model, and variations and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model. Therefore, any modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope defined by the claims of the present invention, unless the technical essence of the present invention departs from the content of the present invention.

Claims (10)

1. An intermediate case assembly, comprising:

a case;

a bearing seat located radially inside the casing; and

the oil supply assembly comprises an oil supply pipeline and a nozzle, so that lubricating oil is transported through the oil supply pipeline and sprayed out of the nozzle;

the nozzles comprise a first bearing nozzle and a second bearing nozzle, and the axial positions of the first bearing nozzle and the second bearing nozzle are adjacent to the bearing seat.

2. The intermediate case assembly of claim 1, wherein said bearing seat comprises: the connecting part extends outwards from the body of the bearing seat in the radial direction and is used for being connected with the casing; the stop portion extends radially inward from the body of the bearing housing for stopping axial movement of a bearing carried by the bearing housing.

3. The intermediate case assembly of claim 2, wherein said nozzle further comprises a third nozzle, a fourth nozzle and a fifth nozzle, which diverge from said first bearing nozzle and said second bearing nozzle, respectively, in an axial direction of said oil supply line.

4. The intermediate case assembly of claim 3, wherein the inner wall of the case has a first sealing region and a second sealing region axially disposed at respective axial ends of the case, the first sealing region being axially upstream of the second sealing region.

5. The intermediate case assembly of claim 4, wherein said sealing structure of said sealing region comprises a coating, a honeycomb, a graphite seal, a brush seal.

6. The intermediate casing assembly of claim 1, wherein the first bearing nozzle and the second bearing nozzle are at the same axial location, the first bearing nozzle being radially inward relative to the second bearing nozzle.

7. The intermediate case assembly of claim 1 or 2, wherein said bearing seat and said case are one-piece.

8. A gas turbine engine comprising the intermediate case assembly of any one of claims 1-7, a rotor, a main bearing; wherein the rotor is supported by the main bearing, the main bearing is supported by the bearing housing, and the oil supply unit supplies lubricating oil to the main bearing.

9. The gas turbine engine of claim 8, further comprising a central drive gearbox located within the mounting space provided by the case, the oil supply assembly further providing lubricating oil to the central drive gearbox.

10. A vehicle comprising a gas turbine engine as claimed in claim 8 or 9, the gas turbine engine powering the vehicle to drive its movement.

Images