Gas turbine sealing assembly in high-temperature environment

Abstract

The utility model discloses a gas turbine sealing assembly in a high temperature environment, which comprises a steam sealing ring formed by a plurality of steam sealing pieces, arc-shaped grooves are arranged on the outer ring surfaces of the steam sealing pieces, a plurality of arc-shaped grooves are combined to form a connecting groove, connecting plates with arc-shaped structures are arranged in the arc-shaped grooves, limit grooves are arranged on two sides of the arc-shaped grooves, and the limit grooves are matched with the arc-shaped grooves. The limiting grooves are communicated and combined to form an annular groove, the positions, right opposite to the limiting grooves, of the two sides of the connecting plates protrude to form limiting parts, the limiting parts are arranged in the limiting grooves in a sliding mode, one ends of the connecting plates enter the arc-shaped grooves of the adjacent steam sealing parts in a sliding mode, and one ends of the limiting parts also enter the limiting grooves of the adjacent steam sealing parts in a sliding mode. The steam sealing piece splicing device is simple in structure, splicing of a plurality of steam sealing pieces can be directly completed by rotating the connecting plate, efficiency is greatly improved, after the connecting plate is rotated, the first screw hole and the second screw hole can be directly opposite, and operation of headless bolts is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of gas turbines, in particular to a gas turbine sealing component in a high-temperature environment. Background Art

[0002] The steam seal ring is a key component in gas turbines, primarily responsible for reducing steam (or gas) leakage and thereby improving turbine efficiency. Furthermore, the design and manufacture of the steam seal ring must take into account its high-temperature, corrosion, and wear resistance to withstand the high temperatures, high pressures, and high-speed rotational loads generated during gas turbine operation. These characteristics ensure the steam seal ring's stability and reliability in harsh environments, thereby safeguarding the overall performance and operational safety of the gas turbine.

[0003] During the installation of the steam seal ring, the steam seal parts are generally installed inside the gas turbine by splicing, and multiple steam seal parts are fixed by bolts. However, during this process, the steam seal parts are easily misaligned, which affects the splicing efficiency. In addition, the splicing process is relatively complicated, and the bolts cannot be quickly aligned with the screw holes, which affects the overall installation and disassembly efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a gas turbine sealing assembly for high temperature environments, which can achieve precise alignment between steam seal parts by rotating the connecting plate, so as to solve the problems raised in the above background technology.

[0005] The utility model is realized through the following technical scheme: a gas turbine sealing assembly for a high-temperature environment, comprising a steam seal ring composed of multiple steam seal parts, wherein the outer ring surface of each steam seal part is provided with an arc groove, and multiple arc grooves are combined to form a connecting groove, and a connecting plate with an arc structure is provided in each arc groove, and limiting grooves are provided on both sides of the arc groove, and the limiting grooves are connected and combined to form an annular groove, and both sides of the connecting plate are protruded opposite to the limiting groove to form a limiting part, and the limiting parts are slidably arranged in the limiting groove, and one end of the connecting plate slides into the arc groove of the adjacent steam seal part, and one end of the limiting part also slides into the limiting groove of the adjacent steam seal part.

[0006] As a preferred technical solution, an arc-shaped sliding groove is provided on the inner ring surface of the arc groove, and the inner side surface of the connecting plate protrudes opposite the sliding groove to form a slider, which is slidably arranged in the sliding groove. A compression spring is installed at one end of the slider, and the other end of the compression spring is installed on the inner wall surface of the sliding groove.

[0007] As a preferred technical solution, the connecting plates are arranged to be in contact with each other, a plurality of connecting rings are combined to form a connecting ring, and the outer ring surfaces of the connecting plates are arranged flush.

[0008] As a preferred technical solution, a first screw hole is provided at one end of the connecting plate, a second screw hole is provided on the inner wall surface of the arc groove opposite to the first screw hole, and headless bolts are threadedly connected in the opposite first screw hole and second screw hole.

[0009] As a preferred technical solution, the compression spring is a high-temperature resistant compression spring.

[0010] As a preferred technical solution, the width of the connecting plate matches the width of the arc-shaped groove.

[0011] The beneficial effects of the utility model are as follows: the utility model has a simple structure, and after the steam seals are distributed in a ring structure, the splicing of multiple steam seals can be directly completed by rotating the connecting plate, which greatly increases the efficiency; and after rotation, the first screw hole and the second screw hole can be directly opposite to each other, which facilitates the operation of the headless bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

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

[0014] Figure 2 This is a schematic diagram of the structure of the utility model after any one connecting plate is removed;

[0015] Figure 3 It is a structural diagram of any connecting plate and steam seal in the present utility model;

[0016] Figure 4 It is a structural schematic diagram of the connecting plate in the utility model.

[0017] Among them, 1. steam seal; 2. connecting plate; 3. headless bolt; 4. arc groove; 5. slide groove; 6. compression spring; 7. slider; 8. limit groove; 9. limit part; 10. first screw hole; 11. second screw hole. DETAILED DESCRIPTION

[0018] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

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

[0020] Any feature disclosed in this specification (including any appended claims, abstract, and drawings), unless otherwise stated, may be replaced by other equivalent or similar features. In other words, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0021] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the utility model is a gas turbine sealing assembly for high temperature environment, including a steam seal ring composed of multiple steam seal parts 1, the outer ring surface of each steam seal part 1 is provided with an arc groove 4, and multiple arc grooves 4 are combined to form a connecting groove, and a connecting plate 2 with an arc structure is provided in the arc groove 4. Both sides of the arc groove 4 are provided with a limit groove 8, and the limit grooves 8 are connected and combined to form an annular groove. Both sides of the connecting plate 2 protrude opposite the limit groove 8 to form a limit portion 9, and the limit portion 9 is slidably set in the limit groove 8. One end of the connecting plate 2 slides into the arc groove 4 of the adjacent steam seal part 1, and one end of the limit portion 9 also slides into the limit groove 8 of the adjacent steam seal part 1.

[0022] In this embodiment, an arc-shaped slide groove 5 is provided on the inner ring surface of the arc groove 4, and a slider 7 is protruded from the inner side surface of the connecting plate 2 opposite the slide groove 5. The slider 7 is slidably set in the slide groove 5, and a compression spring 6 is installed at one end of the slider 7, and the other end of the compression spring 6 is installed on the inner wall surface of the slide groove 5.

[0023] In this embodiment, the connecting plates 2 are arranged in abutment with each other, and a plurality of connecting rings are combined to form a connecting ring. The outer ring surfaces of the connecting plates 2 are arranged flush to ensure the flatness of the outer ring surface of the steam seal ring and avoid unevenness that affects assembly.

[0024] In this embodiment, a first screw hole 10 is provided at one end of the connecting plate 2, and a second screw hole 11 is provided on the inner wall surface of the arc-shaped groove 4 opposite to the first screw hole 10, and headless bolts 3 are threadedly connected in the opposite first screw hole 10 and second screw hole 11.

[0025] In this embodiment, the compression spring 6 is a high-temperature resistant compression spring 6 , so that the device can adapt to high-temperature environments.

[0026] In this embodiment, the width of the connecting plate 2 matches the width of the arc-shaped groove 4, which increases the stability of the connecting plate and avoids axial swinging of the connecting plate.

[0027] During installation, the steam seals can be combined together in a ring structure and set to abut against each other. After completion, any connecting plate can be directly pushed to move along the limiting groove. The movement of one connecting plate can push all the connecting plates, so that one end of the connecting plate slides into the arc groove of the adjacent steam seal, and one end of the limiting part also slides into the limiting groove of the adjacent steam seal. The steam seals can be directly spliced together through the connecting plate and the limiting part that are misaligned with the steam seal.

[0028] Among them, as the connecting plate moves, the connecting plate will drive the slider until one end of the slider is in conflict with one end of the slide groove. At this time, the first screw hole on the connecting plate can be set relative to the second screw hole on the steam seal, so that the headless bolt can be accurately threaded into the second screw hole to complete the overall fixation.

[0029] On the contrary, when disassembling, the headless bolt can be screwed out from the second screw hole. After the fixation of the headless bolt is lost, the sliding block and the connecting plate can be automatically pushed by the rebound of the compression spring, so that the connecting plate can automatically return to the inside of the steam seal connected to it. After the obstruction of the connecting plate is lost, the steam seal can be directly disassembled outward, which greatly facilitates installation and disassembly.

[0030] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that do not require creative effort should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection defined in the claims.

Claims

1. A gas turbine seal assembly for use in a high-temperature environment, characterized in that: The invention comprises a steam seal ring composed of a plurality of steam seal parts (1), wherein the outer ring surface of each steam seal part (1) is provided with an arc groove (4), the plurality of arc grooves (4) are combined to form a connecting groove, a connecting plate (2) with an arc structure is provided in each arc groove (4), both sides of the arc groove (4) are provided with a limiting groove (8), the limiting grooves (8) are connected and combined to form an annular groove, both sides of the connecting plate (2) are protruded opposite to the limiting groove (8) to form a limiting portion (9), the limiting portion (9) is slidably arranged in the limiting groove (8), one end of the connecting plate (2) slides into the arc groove (4) of the adjacent steam seal part (1), and one end of the limiting portion (9) also slides into the limiting groove (8) of the adjacent steam seal part (1).

2. The gas turbine seal assembly for high temperature environments according to claim 1, characterized in that: An arc-shaped slide groove (5) is provided on the inner ring surface of the arc groove (4), and a slider (7) is protruded from the inner side surface of the connecting plate (2) facing the slide groove (5). The slider (7) is slidably arranged in the slide groove (5), and a compression spring (6) is installed at one end of the slider (7), and the other end of the compression spring (6) is installed on the inner wall surface of the slide groove (5).

3. The gas turbine seal assembly for high temperature environments according to claim 1, characterized in that: The connecting plates (2) are all arranged in abutment with each other, a plurality of connecting rings are combined to form a connecting ring, and the outer ring surfaces of the connecting plates (2) are arranged flush.

4. The gas turbine seal assembly for high temperature environments according to claim 1, characterized in that: A first screw hole (10) is provided at one end of the connecting plate (2), and a second screw hole (11) is provided on the inner wall surface of the arc-shaped groove (4) opposite to the first screw hole (10). A headless bolt (3) is threadedly connected in the first screw hole (10) and the second screw hole (11) facing each other.

5. The gas turbine seal assembly for high temperature environments according to claim 2, characterized in that: The compression spring (6) is a high temperature resistant compression spring (6).

6. The gas turbine seal assembly for high temperature environments according to claim 1, characterized in that: The width of the connecting plate (2) matches the width of the arc-shaped groove (4).

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