Improved structure of gas turbine sealing assembly

Abstract

The utility model discloses an improved structure of a gas turbine sealing assembly, which comprises a fixing ring and a plurality of sealing elements, the sealing elements are uniformly distributed in an annular structure, the outer ring surface of each sealing element is provided with an arc-shaped groove, a plurality of arc-shaped grooves are combined to form an annular groove, and the fixing ring is assembled in the annular groove. The fixing ring and the multiple sealing element assemblies form an air sealing ring, a first limiting groove is formed in the inner side face of the fixing ring, a second limiting groove is formed in the position, right opposite to the first limiting groove, of one sealing element, the first limiting groove and the second limiting groove are combined to form a positioning hole, and a plug pin for positioning the multiple sealing elements and the fixing ring together is arranged in the positioning hole. The sealing piece fixing device is simple in structure, the sealing pieces and the fixing ring can be connected together in a rotating mode, the multiple rotating sealing pieces can be synchronously positioned through the plug pins so as to ensure the stability of the sealing pieces, operation is convenient, and follow-up replacement is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a gas turbine sealing technical field, concretely relates to an improved structure of gas turbine sealing assembly. BACKGROUND

[0002] At present, the air gas passage of typical gas turbine is an annular passage, the pressure and temperature of air and gas change extremely sharply along the axial direction, and the specific performance is that, although the gas flow process is continuous, the pressure and temperature of the gas entering the compressor and turbine are distributed in an increasing and decreasing manner from front to back respectively, resulting in a pressure difference existing in each stage of working blade or guide vane. In addition, gaps are inevitably left between the components of the compressor or turbine, especially between the rotating parts and static parts, which leads to inevitable gas leakage. It can be seen that the structure of the gas turbine not only causes performance loss of the gas turbine, but also deteriorates the working conditions and environment of the related parts, directly affecting the service life and reliability of the components, and even causing damage to the machine body.

[0003] Therefore, a gas seal ring needs to be installed between the rotating part and the static part, but the ring piece of the gas seal ring is not convenient to connect with each other, and is not stable after connection, so that the gas seal ring is prone to misalignment during long-term use, reducing the practicability of the whole gas seal ring. SUMMARY

[0004] The utility model wants to solve the technical problem to provide an improved structure of gas turbine sealing assembly, and the sealing element can be sleeved outside the fixed ring through the annular groove, and the connection and positioning between the sealing element and the fixed ring are realized through synchronous rotation, so as to solve the problems in the above background technology.

[0005] The utility model is realized through the following technical scheme: an improved structure of gas turbine sealing assembly, including fixed ring and multiple sealing elements, the sealing element is evenly distributed in annular structure, and the outer circle surface of the sealing element is provided with arc groove, multiple arc grooves are combined to form annular groove, the fixed ring is assembled and arranged in the annular groove, the fixed ring and multiple sealing element components form a gas seal ring, the inner side surface of the fixed ring is provided with first limit slot, one of the sealing elements is provided with second limit slot opposite the first limit slot, the first limit slot and the second limit slot are combined to form positioning hole, and the positioning hole is provided with a pin for positioning multiple sealing elements and the fixed ring together.

[0006] As a preferred technical scheme, the inner circle surface of the fixed ring is provided with the connecting grooves in arc structure, one end of the connecting grooves is enlarged to form the access grooves, the outer side of the access grooves is provided with an opening, the opening of the outer side of the access grooves is sealed by the sealing piece, the arc grooves of the sealing piece are provided with the connecting strips in arc structure, the connecting strips are slidingly arranged in the connecting grooves, and the cross sections of the connecting strips and the connecting grooves are provided in trapezoidal structure.

[0007] As a preferred technical scheme, the inner circle surface of the fixed ring is provided with the connecting grooves in arc structure, one end of the connecting grooves is enlarged to form the access grooves, the outer side of the access grooves is provided with an opening, the opening of the outer side of the access grooves is sealed by the sealing piece, the arc grooves of the sealing piece are provided with the connecting strips in arc structure, the connecting strips are slidingly arranged in the connecting grooves, and the cross sections of the connecting strips and the connecting grooves are provided in trapezoidal structure.

[0008] As a preferred technical scheme, the inner wall surface of the second limiting groove is provided with a screw hole, one end of the bolt is provided with a threaded stud, the threaded stud is threadedly connected in the screw hole, the other end of the bolt is flush with the outer circle surface of the air seal ring and is provided with a cross groove.

[0009] As a preferred technical scheme, the width of the fixed ring matches the width of the arc-shaped groove, one side surface of the fixed ring is flush with one side surface of the sealing piece, and the outer circle surface of the fixed ring is flush with the outer circle surface of the sealing piece.

[0010] As a preferred technical scheme, the sealing pieces are closely arranged.

[0011] The utility model discloses the beneficial effect is: the utility model discloses simple structure, the sealing piece is placed together after being in annular structure, can directly be covered on the fixed ring, and after rotating, the connecting strip can slide into the connecting groove, make the sealing piece and the fixed ring connect together, and through the bolt, the multiple sealing pieces after rotating can be positioned synchronously to ensure its stability, and convenient operation, and the subsequent replacement is facilitated. DRAWINGS

[0012] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will be briefly introduced to the drawing needed to be used in the embodiment or prior art description, obviously, the drawing in the following description only some embodiments of the utility model, for those skilled in the art, under the premise of not creating laboriously, still can obtain other drawings according to these drawings.

[0013] Figure 1 It is the whole structure schematic diagram of the utility model;

[0014] Figure 2 It is the structure schematic diagram of the utility model after removing the fixed ring;

[0015] Figure 3 It is the installation structure schematic diagram of any one sealing piece of the utility model;

[0016] Figure 4 It is a structure schematic view of the fixed ring of the utility model.

[0017] Among them, 1, sealing element;2, fixed ring;3, convex strip;4, bolt;5, arc-shaped groove;6, second limiting groove;7, screw hole;8, connecting strip;9, connecting groove;10, access slot;11, first limiting groove. DETAILED DESCRIPTION

[0018] The embodiments of the utility model are described in detail below, examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as limiting the utility model.

[0019] All features disclosed in the specification, or steps in all disclosed methods or processes, can be combined in any way, except for mutually exclusive features and / or steps.

[0020] Any feature disclosed in the specification (including any accompanying claims, abstract and drawings), unless specifically stated otherwise, can be replaced by other equivalent or similarly purposed alternative features. That is, unless specifically stated, each feature is only an example of one of a range of equivalent or similar features.

[0021] As Figure 1 , Figure 2 , Figure 3 And Figure 4 As shown in the utility model discloses a gas turbine seal assembly's improved structure, including fixed ring 2 and multiple sealing element 1, sealing element 1 is annular structure and is evenly distributed, and the outer circle surface of sealing element 1 is equipped with arc-shaped groove 5, and multiple arc-shaped grooves 5 are combined to form annular groove, and fixed ring 2 is assembled and arranged in annular groove, and fixed ring 2 and multiple sealing element 1 component form gas seal ring, and the inner side surface of fixed ring 2 is equipped with first limiting groove 11, and one of sealing element 1 is opposite first limiting groove 11 and is equipped with second limiting groove 6, and first limiting groove 11 and second limiting groove 6 are combined to form positioning hole, and the positioning hole is equipped with bolt 4 for positioning multiple sealing element 1 and fixed ring 2 together.

[0022] In the embodiment, the inner circle surface of fixed ring 2 is opposite sealing element 1 and is equipped with arc-shaped structure connecting groove 9, one end of connecting groove 9 is enlarged to form access slot 10, the outer side of access slot 10 is open, the opening of the outer side of access slot 10 is sealed by sealing element 1, the arc-shaped groove 5 of sealing element 1 is protruded to form arc-shaped structure connecting strip 8, connecting strip 8 is slidably arranged in connecting groove 9, and the section of connecting strip 8 and connecting groove 9 is arranged in trapezoidal structure.

[0023] In the embodiment, the inner ring surface of the sealing member 1 is provided with a plurality of arc-shaped convex strips 3, the convex strips 3 are combined to form sealing rings, and sealing grooves are formed between the sealing rings.

[0024] In the embodiment, the inner wall surface of the second limiting groove 6 is provided with a screw hole 7, one end of the bolt 4 is provided with a threaded stud, the threaded stud is screwed into the screw hole 7, and the other end of the bolt 4 is flush with the outer ring surface of the gas sealing ring and is provided with a cross groove.

[0025] In the embodiment, the width of the fixed ring 2 matches the width of the arc-shaped groove 5, one side surface of the fixed ring 2 is flush with one side surface of the sealing member 1, and the outer ring surface of the fixed ring 2 is flush with the outer ring surface of the sealing member 1, so that the outer side surface of the gas sealing ring is flush, thereby ensuring the flatness of the equipment.

[0026] In the embodiment, the sealing members 1 are tightly arranged, thereby increasing the sealing property between the sealing members.

[0027] During installation, the sealing members are arranged in a ring structure, the fixed ring is sleeved on the ring-shaped grooves of the sealing members, the connecting strips on the sealing members are aligned with the access grooves, the fixed ring can be smoothly sleeved, and the sealing members and the fixed ring are connected through the insertion of the connecting strips and the connecting grooves.

[0028] In order to ensure the firmness of the connection, the bolt can be inserted into the corresponding positioning hole, the sealing member and the fixed ring are positioned through the bolt, the loosening caused by the rotation of the sealing member and the fixed ring is avoided, one end of the bolt can be screwed into the screw hole, and the firmness after installation is increased.

[0029] Conversely, after the bolt is removed, the sealing member can be reversely rotated, the connecting strips are reinserted into the access grooves, and the sealing members can be directly removed from the fixed ring and separated from each other, thereby facilitating the subsequent replacement.

[0030] The above merely illustrates the specific embodiments of the utility model, but the protection scope of the utility model is not limited to this, any change or replacement without creative labor should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be limited by the protection scope defined in the claims.

Claims

1. In a gas turbine seal assembly, the improvement wherein: The application relates to a gas seal ring, which comprises a fixing ring (2) and a plurality of sealing pieces (1) uniformly distributed in a ring structure, wherein an arc-shaped groove (5) is arranged on the outer circle surface of each sealing piece (1), a plurality of arc-shaped grooves (5) are combined to form a ring-shaped groove, the fixing ring (2) is assembled in the ring-shaped groove, the fixing ring (2) and the plurality of sealing pieces (1) form the gas seal ring, a first limiting groove (11) is arranged on the inner side surface of the fixing ring (2), a second limiting groove (6) is arranged on one of the sealing pieces (1) opposite to the first limiting groove (11), the first limiting groove (11) and the second limiting groove (6) are combined to form a positioning hole, and a bolt (4) is arranged in the positioning hole to position the plurality of sealing pieces (1) and the fixing ring (2) together.

2. The improvement in a gas turbine seal assembly as recited in claim 1 further comprising: An arc-shaped connecting groove (9) is arranged on the inner circle surface of the fixing ring (2) opposite to the sealing piece (1), one end of the connecting groove (9) is expanded to form an access groove (10), the outer side of the access groove (10) is open, the opening of the access groove (10) is sealed by the sealing piece (1), an arc-shaped connecting strip (8) is protruded on the arc-shaped groove (5) of the sealing piece (1), the connecting strip (8) is slidably arranged in the connecting groove (9), and the connecting strip (8) and the connecting groove (9) are both in a trapezoidal structure.

3. The improvement in a gas turbine seal assembly as recited in claim 1 further comprising: A plurality of arc-shaped protrusions (3) are arranged on the inner circle surface of the sealing piece (1), the protrusions (3) are combined to form a sealing ring, and sealing grooves are formed between the sealing rings.

4. The improvement in a gas turbine seal assembly as recited in claim 1 further comprising: A screw hole (7) is arranged on the inner wall surface of the second limiting groove (6), a stud is arranged at one end of the bolt (4), the stud is screw-connected to the screw hole (7), the other end of the bolt (4) is flush with the outer circle surface of the gas seal ring and is provided with a cross groove.

5. The improvement in a gas turbine seal assembly as recited in claim 1 further comprising: The width of the fixing ring (2) matches the width of the arc-shaped groove (5), one side surface of the fixing ring (2) is flush with one side surface of the sealing piece (1), and the outer circle surface of the fixing ring (2) is flush with the outer circle surface of the sealing piece (1).

6. The improvement in a gas turbine seal assembly as recited in claim 1 further comprising: The sealing pieces (1) are tightly arranged.

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