Turbine shroud and gas turbine

Abstract

The invention discloses a turbine guard ring and a gas turbine, comprising a guard ring body, the guard ring body comprising a plate part and a hook part, the hook part being arranged on the outer wall surface of the plate part, the guard ring body being provided with a groove and a convection hole, the groove and the convection hole being arranged on one side of the hook part close to the plate part or on one side of the plate part close to the hook part or at the joint of the hook part and the plate part; the convection hole is in communication with the groove, the groove is provided with a turbulence part, the groove is suitable for the cooling airflow to flow in, the turbulence part is suitable for disturbing the cooling airflow flowing into the groove, and the convection hole is suitable for the cooling airflow to flow out. The turbine guard ring of the invention improves the problem of thermal stress concentration, avoids the thermal deformation caused by the easy formation of temperature gradient, prolongs the service life, and guarantees the stability of turbine operation.

Description

Technical Field

[0001] This invention relates to the field of gas turbine technology, and more specifically, to a turbine retainer ring and a gas turbine using the turbine retainer ring. Background Technology

[0002] A gas turbine is an internal combustion engine that converts the thermal energy of fuel into mechanical energy and other useful work. A gas turbine includes a turbine blade, which consists of moving blades and stationary blades. For protection, a retaining ring is installed around the moving blades. This retaining ring is typically suspended from the turbine's bearing and remains stationary relative to the moving blades as they rotate. However, in related technologies, the turbine retaining rings suffer from high localized thermal stress, resulting in a shorter service life and reduced turbine performance. Summary of the Invention

[0003] This invention is based on the inventor's discoveries and understanding of the following facts and problems:

[0004] In related technologies, hooks are required on the retaining ring to facilitate the assembly of the retaining ring and the holding ring. The hooks make the local dimensions of the retaining ring thicker. When the retaining ring is subjected to impact cooling, the temperature field distribution on the inner side (gas side) of the retaining ring is prone to unevenness. This can easily lead to a temperature gradient on the gas side of the retaining ring and cause thermal stress concentration, which can easily cause thermal deformation of the retaining ring, reduce its service life, and hinder the stable operation of the turbine.

[0005] The present invention aims to at least partially solve one of the technical problems in the related art.

[0006] To address this issue, this invention proposes a turbine retaining ring that improves the problem of thermal stress concentration, avoids thermal deformation caused by temperature gradients, extends service life, and ensures the stability of turbine operation.

[0007] This invention also proposes a gas turbine that uses the aforementioned turbine retaining ring.

[0008] The turbine guard ring of this invention includes a guard ring body, the guard ring body includes a plate portion and a hook portion, the hook portion is disposed on the outer wall surface of the plate portion, the guard ring body is provided with a groove and a convection hole, the groove and the convection hole are disposed on the side of the hook portion near the plate portion, or on the side of the plate portion near the hook portion, or at the connection between the hook portion and the plate portion;

[0009] The convection hole is connected to the groove, and the groove is provided with a turbulence part. The groove is adapted to allow cooling airflow to flow in, the turbulence part is adapted to disturb the cooling airflow flowing into the groove, and the convection hole is adapted to allow the cooling airflow to flow out.

[0010] The turbine retaining ring of this invention improves the problem of thermal stress concentration, avoids thermal deformation caused by the easy formation of temperature gradients, extends service life, and ensures the stability of turbine operation.

[0011] In some embodiments, the flow-dispersing portion includes a plurality of flow-dispersing columns, which are evenly distributed within the groove.

[0012] In some embodiments, the deflector is detachably fitted within the groove.

[0013] In some embodiments, the flow-dispersing portion includes a first plate, a second plate, and a plurality of flow-dispersing columns, with a gap space formed between the first plate and the second plate, the plurality of flow-dispersing columns disposed within the gap space, and the convection holes communicating with the gap space.

[0014] In some embodiments, one of the first plate and one side wall of the groove is provided with at least one first slide rail, and the other is provided with at least one first slide rail, each of the first slide rails being slidably fitted within each of the first slide rails;

[0015] And / or, one of the second plate and the groove wall on the other side of the groove is provided with at least one second slide, and the other is provided with at least one second slide rail, each second slide rail being slidably fitted within each second slide.

[0016] In some embodiments, the plate portion is an arc-shaped plate, the hook portion has an arc and extends along the bending direction of the plate portion, the groove extends through the hook portion along the extension direction of the hook portion, and the groove depth direction of the groove is consistent with the generatrix direction of the plate portion, and the turbulence portion can be laterally inserted into the groove from the groove opening.

[0017] In some embodiments, one end of the convection hole is connected to the groove, and the other end of the convection hole is inclined toward one side of the plate.

[0018] In some embodiments, the flow-dispersing portion includes a plurality of flow-dispersing segments arranged sequentially along the extension direction of the groove.

[0019] In some embodiments, there are two hooks, namely a first hook and a second hook, an impact groove is formed between the first hook and the second hook, the groove of the first hook forms a first groove, the convection hole of the first hook forms a first hole, the first groove connects between the impact groove and the first hole, the groove of the second hook forms a second groove, the convection hole of the second hook forms a second hole, and the second groove connects between the impact groove and the second hole.

[0020] In some embodiments, there are multiple first holes, which are disposed on the side of the first groove away from the impact groove and communicate with the bottom of the first groove, and the multiple first holes are arranged at intervals along the extension direction of the groove.

[0021] And / or, there are multiple second holes, which are located on the side of the second groove away from the impact groove and communicate with the bottom of the second groove, and the multiple second holes are arranged at intervals along the extension direction of the groove.

[0022] The gas turbine in this embodiment of the invention includes a turbine retainer ring, which is the turbine retainer ring described in any of the above embodiments.

[0023] In some embodiments, the gas turbine includes a turbine retainer ring and a plurality of turbine guard rings, the plurality of turbine guard rings being suspended inside the turbine retainer ring by the hook portion, and the plurality of turbine guard rings being arranged sequentially along the circumference of the turbine retainer ring. Attached Figure Description

[0024] Figure 1 This is a partial structural schematic diagram of the turbine retaining ring according to an embodiment of the present invention.

[0025] Figure 2 This is a three-dimensional schematic diagram of a portion of the turbine retaining ring structure in an embodiment of the present invention.

[0026] Figure 3 Figure 2 Schematic diagram of the central spoiler section.

[0027] Figure label:

[0028] Ring body 100;

[0029] Plate 1;

[0030] Hook 2; First hook 21; Second hook 22;

[0031] Groove 3; First groove 31;

[0032] Convection hole 4;

[0033] 5; first plate 51; second plate 52; 53; first slide rail 54;

[0034] Impact groove 6. Detailed Implementation

[0035] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0036] like Figures 1 to 3As shown, the turbine guard ring of this embodiment of the invention includes a guard ring body 100, the guard ring body 100 includes a plate portion 1 and a hook portion 2, the hook portion 2 is disposed on the outer wall surface of the plate portion 1, the guard ring body 100 is provided with a groove 3 and a convection hole 4, the groove 3 and the convection hole 4 are disposed on the side of the hook portion 2 adjacent to the plate portion 1, or on the side of the plate portion 1 adjacent to the hook portion 2, or at the connection between the hook portion 2 and the plate portion 1.

[0037] Specifically, such as Figure 1 As shown, the plate 1 can be flat, and has an inner wall surface and an outer wall surface arranged opposite to each other. The inner wall surface is used to face the gas during use, that is, the inner wall surface of the plate 1 faces the high temperature side. The outer wall surface faces the cooling airflow side, that is, the plate 1 can be cooled by impact convection through the impact of the cooling airflow. The hook 2 can be integrally provided with the plate 1, and the hook 2 can be provided at the edge of the plate 1. Figure 1 (The middle is the left edge), and the extension direction of the hook part 2 can be consistent with the extension direction of the plate part 1.

[0038] like Figure 1 As shown, the groove 3 can be located inside the hook portion 2 (on the side adjacent to the plate portion 1), and the groove 3 can also be located on the right side of the hook portion 2. The depth direction of the groove 3 can generally be along the left-right direction. The convection hole 4 can be located at the connection between the hook portion 2 and the plate portion 1, that is, part of the convection hole 4 can be located inside the hook portion 2, and part can be located inside the plate portion 1. In other words, the convection hole 4 can have a certain inclination in the inward and outward directions and pass through both the hook portion 2 and the plate portion 1. The convection hole 4 can be located on the left side of the groove 3, and the convection hole 4 can connect the groove 3 with the left side wall of the hook portion 2.

[0039] It is understood that in some other embodiments, the groove 3 may also be provided on the outer surface of the plate portion 1, or at the connection between the plate portion 1 and the hook portion 2, that is, a part of the groove 3 may be located inside the hook portion 2, and another part may be located inside the plate portion 1. In other embodiments, the convection hole 4 may be provided only inside the hook portion 2, or the convection hole 4 may be provided only inside the plate portion 1.

[0040] Convection hole 4 is connected to groove 3, such as Figure 1 As shown, the right end of the convection hole 4 is connected to the groove 3. The groove 3 is provided with a turbulence part 5, which can be integrally set with the guard ring body 100. The turbulence part 5 can have multiple protrusions, which can be evenly distributed on the groove wall of the groove 3.

[0041] It should be noted that multiple convection holes 4 can be provided, all of which are connected to the groove 3, and are arranged at intervals along the extension direction of the groove 3. This ensures the uniformity of cooling at the connection point between the hook part 2 and the plate part 1.

[0042] During use, the inner wall of plate 1 will be heated to a high temperature. The cooling airflow on the outside of plate 1 will impact the outer wall of plate 1, thereby achieving impact convection cooling of plate 1 and preventing the plate 1 from overheating. Due to the groove 3 and convection hole 4, the cooling airflow can flow into the groove 3 and then flow out from the convection hole 4. Thus, convection cooling can be achieved at the connection between hook 2 and plate 1, preventing the formation of a high-temperature zone at the connection between plate 1 and hook 2.

[0043] Secondly, since the groove 3 is provided with a turbulence part 5, the turbulence part 5 can play a turbulence role, which can enhance the convective heat transfer effect of the cooling airflow in the groove 3, improve the cooling efficiency, and further avoid the generation of high temperature zone.

[0044] The turbine retaining ring of this invention, by setting groove 3 and convection hole 4, can reduce the effective connection area between hook 2 and plate 1, thereby separating hook 2 and plate 1 and blocking heat transfer. On the other hand, cooling airflow can pass through groove 3 and convection hole 4, thereby achieving convective cooling. This further avoids the formation of a high-temperature zone at the connection between hook 2 and plate 1, making the temperature distribution inside the turbine retaining ring more uniform, improving the problem of thermal stress concentration, avoiding thermal deformation caused by temperature gradients, extending service life, and ensuring the stability of turbine operation.

[0045] Secondly, the turbulence section 5 can enhance the disturbance of the cooling airflow in the groove 3, and can form vortices and prolong the stagnation time in the groove 3, thereby enhancing the cooling efficiency of the cooling airflow in the groove 3. On the other hand, the turbulence section 5 can block the cooling airflow, which can be more evenly distributed in the groove 3, which is conducive to the full mixing of the cooling airflow. This makes the temperature of the cooling airflow flowing into each convection hole 4 consistent, further ensuring the uniformity and isotropy of the cooling.

[0046] In addition, the groove 3 reduces the overall length of the convection hole 4, making it easier to arrange. Furthermore, the internal space of the groove 3 is larger than that of the convection hole 4, allowing the cooling airflow inside the convection hole 4 to flow faster, thereby further enhancing the cooling efficiency.

[0047] In some embodiments, the flow-deflecting portion 5 includes a plurality of flow-deflecting pillars 53, which are evenly distributed within the groove 3. For example... Figure 2 As shown, the turbulence-disrupting part 5 can be integrally formed with the retaining ring body 100, thereby ensuring the overall structural strength of the retaining ring body 100.

[0048] The groove 3 can be a rectangular groove, and the opening of the groove 3 can be located on the right side of the hook 2. The depth direction of the groove 3 can be roughly in the same direction as the left and right directions. Each baffle column 53 can be cylindrical, and each baffle column 53 can extend along the inward and outward directions and connect between the inner and outer opposite sides of the groove 3. The gap between any two adjacent baffle columns 53 can allow cooling airflow to pass through.

[0049] Optionally, the multiple baffle columns 53 can be arranged in multiple rows, and each row can include multiple columns extending along the extension direction of the groove 3. Figure 2 The turbulence columns 53 are arranged at intervals in the front-to-back direction. In the left-to-right direction, multiple turbulence columns 53 between adjacent rows can be staggered to further enhance the turbulence effect and also help to enhance the mixing effect of cooling airflow.

[0050] In some embodiments, the deflector 5 is detachably fitted into the groove 3. Specifically, the deflector 5 can be set independently of the retaining ring body 100. The deflector 5 can be fixed in the groove 3 by means of snap-fit, fastener connection, etc. This simplifies the processing of the turbine retaining ring, as the retaining ring body 100 and the deflector 5 can be processed separately. It also facilitates the inspection and replacement of the deflector 5.

[0051] In some embodiments, the turbulence section 5 includes a first plate 51, a second plate 52 and a plurality of turbulence columns 53, with a gap space formed between the first plate 51 and the second plate 52, and the plurality of turbulence columns 53 disposed in the gap space, and the convection holes 4 communicating with the gap space.

[0052] like Figure 3 As shown, both the first plate 51 and the second plate 52 can be strip-shaped plates, extending along the front-to-back direction, and arranged in parallel at intervals. Each baffle column 53 can be connected between the first plate 51 and the second plate 52, and multiple baffle columns 53 can be evenly distributed within the space between the first plate 51 and the second plate 52. This allows for an integrated design of the baffle section 5, facilitating installation and disassembly.

[0053] In some embodiments, one of the first plate 51 and one side wall of the groove 3 is provided with at least one first slide rail 54, and the other is provided with at least one first slide rail, each first slide rail being slidably fitted within each first slide rail 54; and / or, one of the second plate 52 and one side wall of the groove 3 is provided with at least one second slide rail, and the other is provided with at least one second slide rail, each second slide rail being slidably fitted within each second slide rail.

[0054] Specifically, the first plate 51 may be provided with multiple first slides 54, for example, such as Figure 3As shown, five first chutes can be provided. Multiple first slide rails 54 can be provided on the outer surface of the first plate 51 away from the deflector column 53, and the multiple first slide rails 54 are arranged at intervals along the extending direction (front-back direction) of the first plate 51. One side of the inner wall of the groove 3 forms a first groove 31 wall, and the first groove 31 wall can be provided with multiple first slide rails, the same number as the first slide rails 54. Each first slide rail 54 and each first slide rail can extend in the left-right direction.

[0055] Similarly, the first plate 51 may be provided with multiple second slides, and multiple first slides 54 may be provided on the outer side of the second plate 52 away from the turbulence column 53. The multiple second slides are arranged at intervals along the extension direction of the second plate 52. The other inner wall of the groove 3 forms a second groove wall. The second groove wall is arranged opposite to the wall of the first groove 31. Multiple second slide rails with the same number as the second slides may be provided on the second groove wall. Each second slide rail and each second slide also extends in the left-right direction.

[0056] In use, the turbulence part 5 can be inserted into the groove 3 from the right side slot of the groove 3. Multiple first slide rails can slide and cooperate with multiple first slide tracks 54 in a one-to-one correspondence, and multiple second slide rails can slide and cooperate with multiple second slide tracks in a one-to-one correspondence.

[0057] The arrangement of the first slide rail 54, the first slide rail, the second slide rail, and the second slide rail can enhance the assembly accuracy of the turbulence part 5 and limit the movement of the turbulence part 5, thereby enhancing the stability of the turbine guard ring during use.

[0058] It should be noted that in some other embodiments, the first slide rail may be provided only on the first plate 51, and the first slide rail 54 may be provided on the wall of the first groove 31. In this case, the second plate 52 can be directly attached to the wall of the second groove. In another embodiment, the second slide rail may be provided only on the second plate 52, and the second slide rail may be provided on the wall of the second groove. In this case, the first plate 51 can be directly attached to the wall of the first groove 31.

[0059] In other embodiments, such as Figure 2 As shown, the groove 3 can penetrate the guard ring body 100 along the front-to-back direction, and the turbulence part 5 can also be inserted into the groove 3 from the front or rear port of the groove 3.

[0060] In some embodiments, the plate portion 1 is an arc-shaped plate, the hook portion 2 has an arc and extends along the bending direction of the plate portion 1, the groove 3 penetrates the hook portion 2 along the extension direction of the hook portion 2, and the groove depth direction of the groove 3 is consistent with the generatrix direction of the plate portion 1, and the turbulence portion 5 can be inserted laterally into the groove 3 from the groove opening of the groove 3.

[0061] The plate portion 1 can have a certain amount of bending deformation in the front-to-back direction, and the hook portion 2 can be located at the edge of the plate portion 1 and extend along the front-to-back direction (the bending direction of the plate portion 1). The generatrix direction of the plate portion 1 can be... Figure 1 or Figure 2 In the left and right direction, the groove depth of groove 3 is roughly consistent with the left and right direction, and the groove opening of groove 3 can face the right side.

[0062] When assembling and disassembling the spoiler 5, it can be inserted laterally into the groove 3 from the opening of the groove 3. This reduces the friction between the spoiler 5 and the groove wall of the groove 3 (compared to the case of insertion from the port of the groove 3), reduces the wear of the spoiler 5 or the groove wall of the groove 3, ensures the assembly accuracy of the spoiler 5, and thus ensures the stability of the turbine operation.

[0063] Secondly, it can also reduce the assembly accuracy requirements of the turbulence part 5 and the retaining ring body 100, avoiding the situation where it is necessary to ensure that the curvature of the turbulence part 5 and the curvature of the extension direction of the groove 3 are completely consistent when inserting from the port of the groove 3.

[0064] In some embodiments, one end of the convection hole 4 communicates with the groove 3, and the other end of the convection hole 4 is inclined toward one side of the plate portion 1. For example... Figure 1 As shown, the convection hole 4 can be located on the left side of the groove 3, and the right end of the convection hole 4 can communicate with the bottom of the groove 3. The convection hole 4 can extend obliquely from the right outside to the left inside. Thus, on the one hand, the length of the convection hole 4 can be relatively long within a limited space, thereby improving the cooling effect and cooling efficiency. On the other hand, the cooling airflow flowing out of the convection hole 4 can form an air seal, which can seal the inner side of the plate part 1 and prevent the leakage of high-temperature gas.

[0065] In some embodiments, the flow-deflecting part 5 includes multiple flow-deflecting segments arranged sequentially along the extension direction of the groove 3. Specifically, the flow-deflecting part 5 can be separately configured, and the multiple flow-deflecting segments can be connected sequentially along the front-back direction. This further reduces the processing accuracy requirements of the flow-deflecting part 5 and avoids the situation where the flow-deflecting part 5 is long in the front-back direction and is prone to large processing errors.

[0066] In some embodiments, such as Figure 2 As shown, there are two hooks 2, namely the first hook 21 and the second hook 22. The first hook 21 can be located at the left edge of the plate 1, and the second hook 22 can be located at the right edge of the plate 1. The arrangement of the first hook 21 and the second hook 22 can ensure the stability of the turbine guard ring hoisting.

[0067] An impact groove 6 is formed between the first hook 21 and the second hook 22. The groove 3 of the first hook 21 forms a first groove 31, and the convection hole 4 of the first hook 21 forms a first hole. The first groove 31 connects the impact groove 6 and the first hole. That is, the first groove 31 can be located on the right side of the first hook 21, and the first hole can be located on the left side of the first head.

[0068] The groove 3 of the second hook 22 forms a second groove, and the convection hole 4 of the second hook 22 forms a second hole. The second groove connects the impact groove 6 and the second hole. That is, the second groove can be located on the left side of the second hook 22, and the second hole can be located on the right side of the second hook 22.

[0069] In use, the cooling airflow can flow into the impact groove 6 and can conduct cross-flow cooling on the outer wall of the plate 1 between the first hook 21 and the second hook 22. Then the cooling airflow can flow along the outer wall of the plate. Part of the cooling airflow can flow into the first groove 31 and then flow out from the first hole, while another part of the cooling airflow can flow into the second groove and then flow out from the second hole.

[0070] Therefore, the cooling airflow in the impact groove 6 can simultaneously cool the first hook 21 and the second hook 22, further ensuring the uniformity of temperature distribution during turbine use and improving the high temperature problem on the left and right edges of the turbine guard ring.

[0071] In some embodiments, there are multiple first holes, and the multiple first holes are located on the side of the first groove 31 opposite to the impact groove 6. Figure 2 (on the left side of the first groove 31) and connected to the bottom of the first groove 31, and multiple first holes are along the extending direction of the groove 3 ( Figure 2 Arranged at intervals in the front-to-back direction. In other embodiments, there are multiple second holes, which are located on the side of the second groove away from the impact groove 6. Figure 2 (on the right side of the second groove) and connected to the bottom of the second groove, and multiple second holes extend along the extension direction of the groove 3 ( Figure 2 Arranged at intervals in the front and back directions.

[0072] The gas turbine of an embodiment of the present invention is described below.

[0073] The gas turbine in this embodiment of the invention includes a turbine retainer ring, which can be the turbine retainer ring described in the above embodiments.

[0074] In some embodiments, the gas turbine includes a turbine retainer ring and a plurality of turbine guard rings. The plurality of turbine guard rings are suspended inside the turbine retainer ring by hooks 2, and are arranged sequentially along the circumference of the turbine retainer ring. Specifically, the turbine retainer ring may surround the outer periphery of the turbine blade, and the plurality of turbine guard rings may be disposed between the turbine retainer ring and the turbine blade, and are arranged sequentially along the circumference of the turbine blade.

[0075] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0076] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0077] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0078] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0079] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0080] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A turbine shroud, characterized by, The turbine guard ring comprises a ring body, the ring body comprises a plate part and a hook part, the plate part and the hook part are integrally arranged, the hook part is arranged on the outer wall surface of the plate part, the ring body is provided with a groove and a through hole, the groove and the through hole are arranged on one side of the hook part close to the plate part or on one side of the plate part close to the hook part or at the connection between the hook part and the plate part; The through hole is communicated with the groove, the groove is provided with a turbulence part, the groove is suitable for the cooling airflow to flow into, the turbulence part is suitable for disturbing the cooling airflow flowing into the groove, and the through hole is suitable for the cooling airflow to flow out; The turbulence part is detachably matched in the groove; The turbulence part comprises a first plate, a second plate and a plurality of turbulence columns, a spacing space is formed between the first plate and the second plate, a plurality of turbulence columns are arranged in the spacing space, and the through hole is communicated with the spacing space; One of the first plate and one side groove wall of the groove is provided with at least one first sliding groove, and the other is provided with at least one first sliding rail, each first sliding rail is slidably matched in each first sliding groove; And / or, one of the second plate and the other side groove wall of the groove is provided with at least one second sliding groove, and the other is provided with at least one second sliding rail, each second sliding rail is slidably matched in each second sliding groove.

2. The turbine guard ring of claim 1, wherein, The turbulence part comprises a plurality of turbulence columns, and the plurality of turbulence columns are uniformly distributed in the groove.

3. The turbine guard ring of claim 1, wherein, The plate part is an arc plate, the hook part has an arc and extends along the bending direction of the plate part, the groove penetrates the hook part along the extension direction of the hook part, the groove depth direction of the groove is consistent with the generatrix direction of the plate part, and the turbulence part can be inserted into the groove transversely from the groove opening.

4. The turbine guard ring of claim 3, wherein, One end of the through hole is communicated with the groove, and the other end of the through hole is inclined to one side of the plate part.

5. The turbine guard ring of claim 1, wherein, The turbulence part comprises a plurality of turbulence sections, and the plurality of turbulence sections are sequentially arranged along the extension direction of the groove.

6. The turbine guard ring of any one of claims 1-5, wherein, The hook part has two, two hook parts are respectively a first hook part and a second hook part, an impact groove is formed between the first hook part and the second hook part, the groove of the first hook part forms a first groove, the through hole of the first hook part forms a first hole, the first groove is communicated between the impact groove and the first hole, the groove of the second hook part forms a second groove, the through hole of the second hook part forms a second hole, and the second groove is communicated between the impact groove and the second hole.

7. The turbine guard ring of claim 6, wherein, The first hole has a plurality of first holes arranged on one side of the first groove away from the impact groove and communicated with the groove bottom of the first groove, and the plurality of first holes are arranged in intervals along the extension direction of the groove; And / or, the second hole has a plurality of second holes arranged on one side of the second groove away from the impact groove and communicated with the groove bottom of the second groove, and the plurality of second holes are arranged in intervals along the extension direction of the groove.

8. A gas turbine engine characterized by, The turbine guard ring comprises a turbine guard ring according to any one of claims 1-7.

9. The gas turbine engine of claim 8, wherein, The turbine holding ring and the plurality of turbine protection rings are sequentially arranged along the circumference of the turbine holding ring. The turbine holding ring and the plurality of turbine protection rings are sequentially arranged along the circumference of the turbine holding ring.

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