CN217841748U - Split rectifying blade, casing and aircraft engine - Google Patents

Abstract

The utility model provides a components of a whole that can function independently rectification blade, machine casket and aeroengine, wherein, components of a whole that can function independently rectification blade include first segmentation, second segmentation, first segmentation with the butt joint of second segmentation sets up first top flange, first bottom flange respectively at the upper and lower both ends of first segmentation, sets up second top flange, second bottom flange respectively at the upper and lower both ends of second segmentation, and will first top flange and second top flange first bottom flange with a set of fastener in the second bottom flange is connected, and another group is connected through spacing portion, and spacing portion can restrict first segmentation with the relative motion takes place for the second segmentation in the first direction and the second direction, realizes the fixed of first segmentation and second segmentation and spacing, guarantees the stability of segmentation rectification blade. And through the restriction of spacing portion, can also simplify the assembly step of components of a whole that can function independently rectification blade, promote assembly efficiency.

Description

Split rectifying blade, casing and aircraft engine

Technical Field

The utility model relates to a turbine structural design, in particular to components of a whole that can function independently rectification blade, machine casket and aeroengine.

Background

The turbine interstage casing is a bearing casing between the high-pressure turbine and the low-pressure turbine. The bearing frame consists of a bearing seat, an inner casing, a support plate and an outer casing. The interstage casing is located at the high pressure turbine outlet and is subject to high temperatures. In order to reduce the influence of high temperature on the bearing frame, a rectifying blade needs to be arranged outside the support plate to play roles of rectifying and insulating the bearing frame, and the bearing frame is often designed into an integrated structure by considering space limitation or rigidity requirements. To achieve a fairing blade assembly, it is often necessary to segment the fairing blade. The cold air is communicated between the rectifying blades and the bearing support plate, and the sealing performance of the segmented rectifying blades needs to be ensured to control the leakage of the cold air. The rectifying blades are flow passage pieces, flow passage smoothness needs to be met after sectional assembly, and reverse step difference does not exist. In addition, the temperature of the rectifying blades is high and can reach 1100K generally, and the blades are easy to separate when deformed in a working state and cannot be reliably positioned.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art's defect, provide components of a whole that can function independently rectifier blade, machine casket and aeroengine.

The utility model discloses an above-mentioned technical problem is solved through following technical scheme:

the utility model provides a components of a whole that can function independently rectification blade, include: the first section is butted with the second section;

the upper end and the lower end of the first section are respectively provided with a first upper edge plate and a first lower edge plate, and the upper end and the lower end of the second section are respectively provided with a second upper edge plate and a second lower edge plate;

first upper fringe board and the butt joint of second upper fringe board, first lower fringe board with the butt joint of second lower fringe board, first upper fringe board and second upper fringe board, first lower fringe board with in the second lower fringe board a set of fastener is connected, and another group is connected through spacing portion, spacing portion restriction first segmentation with the relative motion takes place for the second segmentation in first direction and second direction, first direction has the contained angle with the second direction.

In this scheme, provide a components of a whole that can function independently rectification blade, set up first upper flange plate, first lower flange plate respectively at first segmentation's upper and lower both ends, set up second upper flange plate, second lower flange plate respectively at second segmentation's upper and lower both ends, and will first upper flange plate and second upper flange plate first lower flange plate with a set of fastener in the second lower flange plate is connected, and another group is connected through spacing portion, and spacing portion can restrict first segmentation with relative motion takes place for the second segmentation in the first direction and second direction, realizes first segmentation and second segmentation fixed with spacing, guarantees segmentation rectification blade's stability. And through spacing portion restriction, can also simplify the assembly step of components of a whole that can function independently rectification blade, promote assembly efficiency.

Preferably, the first segment has a first end face, the second segment has a second end face thereon, the first end face and the second end face are both provided with a matching groove and a step, the matching groove or the step on the first end face is mutually engaged with the step or the matching groove on the second end face, and the matching groove and the step both extend from one end of the first end face or the second end face to the other end.

In this scheme, through be provided with cooperation groove and step on the first terminal surface and the second terminal surface of mutually supporting respectively, the interlock of first terminal surface and second terminal surface is realized through the cooperation of cooperation groove and step, avoid the problem that first terminal surface and second terminal surface directly arouse with the mode of two plane contacts, and all set up cooperation groove and step to extend to the other end from the one end of first terminal surface or second terminal surface, not only make first terminal surface and second terminal surface all be mutual interlock state in order to guarantee the gas tightness when first segmentation docks with the second segmentation on the whole face, and with the step block cooperation groove can make things convenient for first segmentation and second segmentation to be connected, simplify installation steps.

Preferably, the fastening member is a precision bolt, the first upper edge plate is provided with a first mounting seat, the second upper edge plate is provided with a second mounting seat opposite to the first mounting seat, the first mounting seat and the second mounting seat are both provided with screw holes, and the precision bolt sequentially penetrates through the screw holes to fixedly connect the first upper edge plate and the second upper edge plate.

In this scheme, set up first mount pad, second mount pad on first upper flange board and second respectively, pass the screw on first mount pad and the second mount pad in proper order through accurate bolt, with first upper flange board with second upper flange board fixed connection to the realization is in the first segmentation and the second segmentation respectively being close to the fixed of upper flange board department, and the pretightning force that accurate bolted connection can be applyed can also strengthen the leakproofness of first terminal surface and second terminal surface.

Preferably, the limiting portion is formed by matching a clamping groove and a protrusion, one of the clamping groove and the protrusion is located on the first lower edge plate, and the other of the clamping groove and the protrusion is located on the second lower edge plate.

In this scheme, set up the draw-in groove on one in first lower flange and the second lower flange, another sets up the arch, adopts draw-in groove and bellied complex mode to form spacing portion, not only can be in the restriction first segmentation with relative motion takes place in the first direction and the second direction for the second segmentation, can further reduce first segmentation and second segmentation respectively near the air conditioning of upper flange department and leak through draw-in groove and bellied unsmooth cooperation moreover.

Preferably, the locking groove has a receiving wall in the first direction for limiting movement of the protrusion in the first direction and a stop wall in the second direction for limiting movement of the protrusion in the second direction.

In this scheme, the draw-in groove has the bearing wall in the first direction the second direction has the backstop wall, when the arch was placed in the draw-in groove, protruding terminal surface on the first side along with bear the wall butt, bear the wall and can restrict protruding removal on the first direction, protruding terminal surface and the backstop wall butt on the second direction of following, the backstop wall is with the restriction protruding removal on the second direction.

Preferably, the clamping groove is a U-shaped groove, and the protrusion is a boss located in the U-shaped groove.

In this scheme, the draw-in groove sets up to the U-shaped groove, and the arch is the boss, arranges the boss in the U-shaped inslot, can realize stable spacing through simple structure.

Preferably, the bottom of the first lower flange plate and the bottom of the second lower flange plate are further provided with a sealing part, the sealing part is provided with a first end part and a second end part, the first end part and the second end part form a containing groove, and the containing groove is used for containing the sealing sheet.

In this scheme, still be provided with the portion of obturating respectively at the bottom of first lower flange, second lower flange to make things convenient for the installation of obturating piece ground, further improve components of a whole that can function independently rectifier blade's leakproofness.

Preferably, the first upper edge plate and the second upper edge plate are respectively provided with a connecting part, each connecting part is provided with a lap edge, and each lap edge is L-shaped.

In this scheme, be provided with connecting portion respectively on first upper fringe board and second upper fringe board, connecting portion have the overlap edge, and the overlap edge is L shape to make connecting portion be the shape similar to the couple, be convenient for install with components of a whole that can function independently rectification blade, the simplification installation step.

The utility model also provides a machine casket, it includes outer machine casket, load extension board, interior machine casket, and it still includes aforementioned components of a whole that can function independently rectification blade, and the rectification blade cover is established outside the load extension board during installation.

The utility model also provides an aeroengine, it includes aforementioned machine casket.

The utility model discloses an actively advance the effect and lie in: set up first upper flange plate, first lower flange plate respectively at the upper and lower both ends of first segmentation, set up second upper flange plate, second lower flange plate respectively at the upper and lower both ends of second segmentation, and will first upper flange plate and second upper flange plate first lower flange plate with in the second lower flange plate a set of fastener is connected, and another group is connected through spacing portion, and spacing portion can restrict first segmentation with relative motion takes place in the first direction and second direction for the second segmentation, realizes that first segmentation and second segmentation are fixed with spacing, guarantees the stability of segmentation rectification blade. And through the restriction of spacing portion, can also simplify the assembly step of components of a whole that can function independently rectification blade, promote assembly efficiency.

Drawings

Fig. 1 is a schematic view of a split rectifying blade structure according to an embodiment of the present invention.

Fig. 2 is a schematic view of a first segment structure according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of a second sectional structure according to an embodiment of the present invention.

Fig. 4 is a schematic view of a casing structure according to an embodiment of the present invention.

Fig. 5 is a schematic structural view of the split rectifying blade sleeved on the bearing support plate.

Fig. 6 is a cross-sectional view of the structure of the receiver.

Description of the reference numerals

Split flow straightening vane 1

First segment 11

First upper edge plate 111

First lower edge plate 112

First end surface 113

First mounting seat 114

First chamber 115

Second section 12

Second upper edge plate 121

Second lower flange 122

Second end face 123

Second mounting seat 124

Second chamber 125

Fitting groove 100

Step 101

Card slot 102

Receiving wall 1021

Stop wall 1022

Projection 103

Sealing part 104

Connecting part 105

Cavity 106

Outer casing 2

Bearing support plate 3

Inner casing 4

Detailed Description

The present invention will be more clearly and completely described in the following detailed description of the preferred embodiments in conjunction with the accompanying drawings.

The utility model provides a components of a whole that can function independently rectification blade 1, as shown in fig. 1-3, components of a whole that can function independently rectification blade includes: a first section 11, a second section 12, and the first section 11 is butted against the second section 12; the upper end and the lower end of the first section 11 are respectively provided with a first upper edge plate 111 and a first lower edge plate 112, and the upper end and the lower end of the second section 12 are respectively provided with a second upper edge plate 121 and a second lower edge plate 122; the first upper edge plate 111 is in butt joint with the second upper edge plate 121, the first lower edge plate 112 is in butt joint with the second lower edge plate 122, one group of the first upper edge plate 111, the second upper edge plate 121 and the first lower edge plate 112 are connected with the second lower edge plate 122 through fasteners, the other group of the first upper edge plate 111 and the second lower edge plate 122 are connected through a limiting part, the limiting part limits the first segment 11 and the second segment 12 to move relatively in a first direction A and a second direction B, an included angle is formed between the first direction A and the second direction, the first direction A is along the height direction of the split rectifying blade 1, and the second direction B is along the butt joint direction of the first segment 11 and the second segment 12.

In the scheme, a first upper edge plate 111 and a first lower edge plate 112 are respectively arranged at the upper end and the lower end of a first section 11, a second upper edge plate 121 and a second lower edge plate 122 are respectively arranged at the upper end and the lower end of a second section 12, one group of the first upper edge plate 111, the second upper edge plate 121, the first lower edge plate 112 and the second lower edge plate 122 are connected through fasteners, the other group is connected through a limiting part, and the limiting part can limit the first section 11 and the second section 12 to move relatively in the first direction and the second direction, so that the first section 11 and the second section 12 are fixed and limited, and the stability of the sectional rectifying blade is ensured. And through spacing portion restriction, can also simplify the assembly step of components of a whole that can function independently rectification blade 1, promote assembly efficiency.

As shown in fig. 2 to 3, the first segment 11 has a first end surface 113, the second segment 12 has a second end surface 123, the split rectifying blade 1 has a cavity 106 inside, the first segment 11 has a first cavity 115, the second segment 12 has a second cavity 125, when the first segment 11 is butted with the second segment 12, the first cavity 115 is butted with the second cavity 125 to form the cavity 106, the first end surface 113 is located on both sides of the first cavity 115, the second end surface 123 is located on both sides of the second cavity 125, the first end surface 113 and the second end surface 123 are both provided with a mating groove 100 and a step 101, the mating groove 100 or the step 101 on the first end surface 113 is mutually engaged with the step 101 or the mating groove 100 on the second end surface 123, and the mating groove 100 and the step 101 both extend from one end of the first end surface 113 or the second end surface 123 to the other end.

In this embodiment, the fitting groove 100 is provided on one of the first end surface 113 and the second end surface 123 that are fitted with each other, and the step 101 that is fitted with the fitting groove 100 is provided on the other end surface, so that the first end surface 113 and the second end surface 123 are fitted with each other, and the fitting of the fitting groove 100 and the step 101 is realized, thereby avoiding the problem of poor sealing performance caused by the direct two-plane contact between the first end surface 113 and the second end surface 123, and further, the fitting groove 100 and the step 101 are both provided to extend from one end of the first end surface 113 or the second end surface 123 to the other end, so that not only the first end surface 113 and the second end surface 123 are in a mutually-fitted state over the entire surface to ensure the airtight connection between the first segment 11 and the second segment 12, but also when the first segment 11 and the first segment 12 are joined together, the step 101 is engaged with the lower end of the fitting groove 100 from the upper end of the fitting groove, thereby facilitating the connection between the first segment 11 and the second segment 12, positioning can be performed, and the accurate joining of the first segment 11 and the second segment 12 can be achieved by the fitting together of the fitting groove 100 and the step 101, thereby simplifying the mounting step.

The fastening members are precision bolts, the first upper edge plate 111 is provided with a first mounting seat 114, the second upper edge plate 121 is provided with a second mounting seat 124 opposite to the first mounting seat 114, the first mounting seat 114 and the second mounting seat 124 are both provided with screw holes, the precision bolts sequentially penetrate through the screw holes to fixedly connect the first upper edge plate 111 and the second upper edge plate 121, as shown in fig. 1-3, two first mounting seats 114 are respectively arranged at two sides of the first chamber 115, two second mounting seats 124 are respectively arranged at two sides of the second chamber 125, when the first section 11 is butted with the second section 12, the first mounting seats 114 at two sides of the first chamber 115 are respectively aligned with the second mounting seats 124 at two sides of the second chamber 125, the precision bolts sequentially penetrate through the screw holes on the first mounting seat 114 and the second mounting seat 124 at two sides of the chamber, the first upper edge plate 111 is fixedly connected with the second upper edge plate 121, so that the first section 11 and the second section 12 are respectively fixed at positions close to the upper edge plate, and the bolt connection can further enhance the tightness of the second end face 113 and the precision bolts 123.

As shown in fig. 2-3, the limiting portion is formed by matching the engaging groove 102 and the protrusion 103, the engaging groove 102 is located on the first lower edge plate 112, the protrusion 103 is located on the second lower edge plate 122, and the limiting portion is formed by matching the engaging groove 102 and the protrusion 103, so that not only the relative movement between the first segment 11 and the second segment 12 in the first direction a and the second direction B can be limited, but also the cold air leakage of the first segment 11 and the second segment 12 near the upper edge plate can be further reduced by the concave-convex matching between the engaging groove 102 and the protrusion 103. Of course, in other embodiments, the protrusion 103 may be disposed on the first lower flange 112 and the slot 102 may be disposed on the second lower flange 122.

As shown in fig. 2-3, in the present embodiment, the first upper edge plate 111 and the second upper edge plate 121 are connected at the upper edge plate by using precision bolts, the first lower edge plate 112 and the second lower edge plate 122 are connected at the lower edge plate by using the fastening slot 102 and the protrusion 103, but in other embodiments, the first upper edge plate 111 and the second upper edge plate 121 may be connected at the upper edge plate by using the fastening slot 102 and the protrusion 103, and the first lower edge plate 112 and the second lower edge plate 122 may be connected at the lower edge plate by using precision bolts.

As shown in fig. 2, the locking groove 102 has a receiving wall 1021 in the first direction and a stop wall 1022 in the second direction, the receiving wall 1021 is used for limiting the movement of the protrusion 103 in the first direction, and the stop wall 1022 is used for limiting the movement of the protrusion 103 in the second direction. When the protrusion 103 is placed in the notch 102, the protrusion 103 abuts against the receiving wall 1021 along the first direction end face, the receiving wall 1021 can restrict the movement of the protrusion 103 in the first direction, the protrusion 103 abuts against the stopper wall 1022 along the second direction end face, and the stopper wall 1022 restricts the movement of the protrusion 103 in the second direction.

Specifically, the card slot 102 may be configured as a U-shaped slot, and the protrusion 103 is a boss located in the U-shaped slot. The boss is arranged in the U-shaped groove, and stable limiting can be realized through a simple structure.

As shown in fig. 1 to fig. 3, the bottom of the first lower flange 112 and the second lower flange 122 is further provided with a sealing portion 104, the sealing portion 104 has a first end portion and a second end portion, the first end portion and the second end portion form an accommodating groove for accommodating a sealing sheet, the sealing sheet and a component adjacent to the sealing sheet form a sealing pair for improving the sealing property when the split rectifying blade contacts with other components, such as an inner casing or other installation parts when the split rectifying blade is installed.

As shown in fig. 1 to 3, the first upper edge plate 111 and the second upper edge plate 121 are respectively provided with a connecting portion 105, and the connecting portion 105 has a lap edge which is L-shaped, so that the installation of the split type rectifying blade 1 is facilitated, and the installation steps are simplified.

As shown in fig. 4-6, the present invention further provides a casing, which comprises an outer casing 2, a load-bearing support plate 3, an inner casing 4, and the split rectifying blades 1, wherein the split rectifying blades are sleeved outside the load-bearing support plate 3 during installation, and the split rectifying blades 1 are fixedly connected to the outer casing 2 through a connecting portion 105.

The utility model also provides an aeroengine, it includes aforementioned machine casket.

Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims (10)

1. A split fairing blade, comprising: a first segment, a second segment, the first segment interfacing with the second segment;

the upper end and the lower end of the first section are respectively provided with a first upper edge plate and a first lower edge plate, and the upper end and the lower end of the second section are respectively provided with a second upper edge plate and a second lower edge plate;

first upper fringe board and the butt joint of second upper fringe board, first lower fringe board with the butt joint of second lower fringe board, first upper fringe board and second upper fringe board, first lower fringe board with in the second lower fringe board a set of fastener is connected, and another group is connected through spacing portion, spacing portion restriction first segmentation with the relative motion takes place for the second segmentation in first direction and second direction, first direction has the contained angle with the second direction.

2. The split fairing blade of claim 1 wherein said first segment has a first end face and said second segment has a second end face, said first end face and said second end face each having a mating groove and step, said mating groove or step on said first end face interfitting with said step or mating groove on said second end face, said mating groove and said step each extending from one end of said first end face or said second end face to the other.

3. The split fairing blade as recited in claim 1, wherein said fasteners are precision bolts, said first upper edge plate is provided with a first mounting seat, said second upper edge plate is provided with a second mounting seat opposite to said first mounting seat, said first mounting seat and said second mounting seat are both provided with screw holes, said precision bolts sequentially pass through said screw holes to fixedly connect said first upper edge plate and said second upper edge plate.

4. The splitter vane of claim 1, wherein the retention portion is formed by a snap fit with a projection, one of the snap fit and projection being located on the first lower skirt, and the other of the snap fit and projection being located on the second lower skirt.

5. The split fairing blade of claim 4 wherein said snap groove has a receiving wall in said first direction and a stop wall in said second direction, said receiving wall for limiting movement of said projection in said first direction and said stop wall for limiting movement of said projection in said second direction.

6. The split fairing blade as recited in claim 5, wherein said notch is a U-shaped slot and said protrusion is a boss located within said U-shaped slot.

7. The split fairing blade of claim 1 wherein the bottom of said first and second lower platforms further comprises a seal having a first end and a second end, said first and second ends defining a receiving slot for receiving a seal tab.

8. The split fairing blade of claim 1 wherein each of said first and second upper flanges has a connecting portion thereon, said connecting portions having overlapping edges, said overlapping edges being L-shaped.

9. A casing comprises an outer casing, a force bearing support plate and an inner casing, and is characterized by further comprising the split rectifying blade as claimed in any one of claims 1 to 8, wherein the split rectifying blade is sleeved outside the force bearing support plate.

10. An aircraft engine, characterized in that it comprises a casing according to claim 9.

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