Blade sealing assembly, turbine and gas turbine

Abstract

The utility model relates to a blade sealing assembly, a turbine and a gas turbine. The blade sealing assembly comprises a first blade, a second blade and an elastic sealing piece, the first blade and the second blade are each provided with a sealing groove and a limiting groove which are communicated, the other end of each sealing groove is communicated with the corresponding limiting groove in a crossed mode, and the elastic sealing piece comprises a first limiting section, a first sealing section, a protruding part, a second sealing section and a second limiting section which are sequentially connected. The first limiting section is arranged in the limiting groove of the first blade, the first sealing section is arranged in the sealing groove of the first blade, the second sealing section is arranged in the sealing groove of the second blade, and the second limiting section is arranged in the limiting groove of the second blade. According to the blade sealing assembly, the elastic sealing piece can be prevented from being separated from any one of the two blades, the contact area between the elastic sealing piece and the first blade and the contact area between the elastic sealing piece and the second blade are guaranteed, the sealing performance of the elastic sealing piece is guaranteed, then the efficiency of the gas turbine is guaranteed, and the economical efficiency and the safety of the gas turbine are improved.

Description

Technical Field

[0001] This utility model relates to the field of gas turbine technology, specifically designing a blade sealing assembly, a turbine, and a gas turbine. Background Technology

[0002] The turbine blades of a gas turbine are assembled in a circumferential manner. At the split face, each blade slides sequentially into the turbine cylinder and is circumferentially positioned by locating pins. Considering the high ambient temperature during blade operation and the inherent thermal expansion of the blades, a certain expansion gap is reserved at the circumferential mating points. Sufficient expansion gaps are necessary to prevent the blades from squeezing each other during expansion; however, excessive gaps can increase leakage and reduce efficiency. Typically, a sealing plate is placed at the expansion gap to prevent leakage. In related technologies, the sealing plate has a raised structure in the center. The deformation of this raised structure counteracts the squeezing and shearing action of the expanding blades, ensuring the sealing plate's lifespan and sealing performance. However, because some turbine blades are large in size and have large expansion gaps, when the gap between the blades increases, the gap between one side of the sealing plate and the blade's sealing groove can increase or the contact area can decrease. This reduces the sealing effect of the sealing plate, thereby reducing the gas turbine's efficiency. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] Therefore, embodiments of this utility model propose a blade sealing assembly that can maintain a stable connection with the first and second blades, ensuring the sealing performance of the elastic seal, thereby ensuring the efficiency of the gas turbine and improving its economy and safety.

[0005] An embodiment of this utility model proposes a turbine.

[0006] An embodiment of this utility model proposes a gas turbine.

[0007] According to an embodiment of the present invention, the blade sealing assembly includes a first blade, a second blade, and an elastic sealing element. An expansion gap exists between the first blade and the second blade. Both the first blade and the second blade are provided with a communicating sealing groove and a limiting groove. One end of the sealing groove faces the expansion gap, and the other end of the sealing groove is intersecting and communicating with the limiting groove. The elastic sealing element includes a first limiting segment, a first sealing segment, a protrusion, a second sealing segment, and a second limiting segment connected in sequence. The first limiting segment is disposed in the limiting groove of the first blade, the first sealing segment is disposed in the sealing groove of the first blade, the protrusion is located in the expansion gap, the second sealing segment is disposed in the sealing groove of the second blade, and the second limiting segment is disposed in the limiting groove of the second blade.

[0008] The blade sealing assembly of this utility model forms a stable connection with the first blade and the second blade through the first limiting segment and the second limiting segment located at both ends of the elastic seal, respectively. This prevents the elastic seal from detaching from either of the two blades, ensures the contact area between the elastic seal and the first and second blades, ensures the sealing performance of the elastic seal, and thus ensures the efficiency of the gas turbine and improves the economy and safety of the gas turbine.

[0009] In some embodiments, the protrusion has two parts, namely a first protrusion and a second protrusion, the protrusions of the first protrusion and the second protrusion are oriented in opposite directions, one end of the first protrusion is connected to the first sealing section, the other end of the first protrusion is connected to one end of the second protrusion, and the other end of the second protrusion is connected to the second sealing section.

[0010] In some embodiments, the first blade is provided with a first clearance groove, a portion of the first protrusion is located in the first clearance groove, and the first protrusion abuts against the second blade; the second blade is provided with a second clearance groove, a portion of the second protrusion is located in the second clearance groove, and the second protrusion abuts against the second blade.

[0011] In some embodiments, the first protrusion includes a first connecting segment, a first arc-shaped segment, and a second connecting segment connected in sequence. The first connecting segment is connected to the first sealing segment, and the first arc-shaped segment and / or the second connecting segment abut against the second blade. The second protrusion includes a third connecting segment, a second arc-shaped segment, and a fourth connecting segment connected in sequence. The third connecting segment is connected to the second connecting segment, and the third connecting segment and / or the second arc-shaped segment abut against the first blade. The fourth connecting segment is connected to the second sealing segment, and the openings of the first arc-shaped segment and the second arc-shaped segment are arranged facing each other.

[0012] In some embodiments, the first clearance groove communicates with the sealing groove of the first blade, and the second clearance groove communicates with the sealing groove of the second blade.

[0013] In some embodiments, the orientation of the first limiting segment is opposite to the protrusion orientation of the first protrusion, and the orientation of the second limiting segment is opposite to the protrusion orientation of the second protrusion.

[0014] In some embodiments, both the first sealing section and the second sealing section are provided with sealing teeth, which abut against the wall of the sealing groove and are located on the cold air side of the turbine.

[0015] In some embodiments, the first sealing section and the second sealing section are circumferentially opposite each other in the turbine.

[0016] The turbine of this utility model embodiment includes a turbine body and a blade sealing assembly. The blade sealing assembly is disposed in the turbine body, and the first blade and the second blade are arranged at intervals along the circumference of the turbine body.

[0017] The turbine in this embodiment of the invention has good sealing performance on both the cold and hot air sides.

[0018] The gas turbine of this utility model embodiment includes the blade sealing assembly or the turbine described in any embodiment.

[0019] The gas turbine of this utility model embodiment has high efficiency, good economy and safety. Attached Figure Description

[0020] Figure 1 This is one of the structural schematic diagrams of the blade sealing assembly according to an embodiment of the present utility model;

[0021] Figure 2 This is the second schematic diagram of the blade sealing assembly according to an embodiment of the present utility model;

[0022] Reference numerals:

[0023] Blade sealing assembly 100;

[0024] First blade 1, sealing groove 11, limiting groove 12, first clearance groove 13, second blade 2, second clearance groove 21;

[0025] The elastic seal 3 includes a first limiting section 31, a first sealing section 32, a sealing tooth 321, a second sealing section 33, a second limiting section 34, a first protrusion 35, a first connecting section 351, a first arc-shaped section 352, a second connecting section 353, a second protrusion 36, a third connecting section 361, a second arc-shaped section 362, and a fourth connecting section 363. Detailed Implementation

[0026] The embodiments of the present invention are described in detail below, examples of which are shown 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.

[0027] The following is a reference to the appendix. Figure 1 and Figure 2 This invention provides a detailed description of the blade sealing assembly 100, turbine, and gas turbine according to embodiments of the present invention.

[0028] like Figure 1 and Figure 2As shown, the blade sealing assembly 100 of this utility model embodiment includes a first blade 1, a second blade 2, and an elastic sealing element 3. The first blade 1 and the second blade 2 are arranged at intervals along the circumference of the turbine, and there is an expansion gap between the first blade 1 and the second blade 2. Both the first blade 1 and the second blade 2 are provided with a connected sealing groove 11 and a limiting groove 12. One end of the sealing groove 11 faces the expansion gap, and the other end of the sealing groove 11 is cross-connected with the limiting groove 12. The elastic sealing element 3 includes a first limiting section 31, a first sealing section 32, a protrusion, a second sealing section 33, and a second limiting section 34 connected in sequence. The first limiting section 31 is located in the limiting groove 12 of the first blade 1, the first sealing section 32 is located in the sealing groove 11 of the first blade 1, the protrusion is located in the expansion gap, the second sealing section 33 is located in the sealing groove 11 of the second blade 2, and the second limiting section 34 is located in the limiting groove 12 of the second blade 2.

[0029] The circumferential direction of the turbine can be referenced in the appendix. Figure 2 The left and right directions of the turbine, and the radial direction of the turbine can be referred to in the appendix. Figure 2 The inward and outward directions.

[0030] The elastic seal 3 possesses a certain degree of elasticity and is capable of elastic deformation. When the first blade 1 and the second blade 2 expand and deform due to heat, the expansion gap decreases in the circumferential direction of the turbine, compressing the elastic seal 3. Under the action of compressive or shear force, the protrusion of the elastic seal 3 undergoes elastic deformation. When the deformation of the first blade 1 and the second blade 2 recovers, the expansion gap returns to its original state, and the protrusion of the elastic seal 3 returns to its initial state.

[0031] It is understandable that the sealing groove 11 and the limiting groove 12 are intersecting and connected. The depth direction of the sealing groove 11 and the depth direction of the limiting groove 12 are intersecting. Correspondingly, the connection between the first sealing section 32 and the first limiting section 31 forms a hook, and the connection between the second sealing section 33 and the second limiting section 34 forms a hook. In the circumferential direction of the turbine, the cooperation between the first limiting section 31 and the sealing groove 11 of the first blade 1 forms the elastic seal 3 at that end (the left end as shown in Figure 2), and the cooperation between the second limiting section 34 and the sealing groove 11 of the second blade 2 forms the elastic seal 3 at that end (the right end as shown in Figure 2). That is, the two ends of the elastic seal 3 respectively form the limiting of the first blade 1 and the second blade 2 in the circumferential direction of the turbine. This ensures that both ends of the elastic seal 3 can maintain a stable connection with the first blade 1 and the second blade 2, respectively. During the process of elastic deformation and return to the initial state of the elastic seal 3, that is, during the service life of the elastic seal 3, the ends (left and / or right) of the elastic seal 3 are prevented from separating from the sealing groove of the blade, ensuring the contact area between the first sealing section 32 and the first blade 1, and ensuring the contact area between the second sealing section 33 and the second blade 2. This ensures the effect of the first sealing section 32 and the second sealing section 33 in preventing gas leakage, ensuring the sealing performance of the elastic seal 3, and thus ensuring the efficiency of the gas turbine.

[0032] Meanwhile, the cooperation between the first limiting segment 31 and the limiting groove 12 of the first blade 1, and the cooperation between the second limiting segment 34 and the limiting groove 12 of the second blade 2, also increases the contact area between the elastic seal 3 and the first blade 1 and the second blade 2 respectively, thereby improving the sealing performance of the elastic seal 3.

[0033] Therefore, the blade sealing assembly 100 of this utility model embodiment can maintain a stable connection with the first blade 1 and the second blade 2, ensure the contact area between the elastic seal 3 and the first blade 1 and the second blade 2, ensure the sealing performance of the elastic seal 3, thereby ensuring the efficiency of the gas turbine and improving the economy and safety of the gas turbine.

[0034] Specifically, the elastic seal 3 is made of shape memory alloy material.

[0035] In some embodiments, there are two protrusions, namely a first protrusion 35 and a second protrusion 36. The first protrusion 35 and the second protrusion 36 are connected and the protrusions of the first protrusion 35 and the second protrusion 36 face opposite directions. One end (left end) of the first protrusion 35 is connected to the first sealing section 32, the other end (right end) of the first protrusion 35 is connected to one end (left end) of the second protrusion 36, and the other end (right end) of the second protrusion 36 is connected to the second sealing section 33.

[0036] The elastic seal 3 of this utility model embodiment has two protrusions (a first protrusion 35 and a second protrusion 36), and the two protrusions face opposite directions, such as... Figure 1 and 2 As shown, the protrusion of the first protrusion 35 faces outward, and the protrusion of the second protrusion 36 faces inward. The connection between the first protrusion 35 and the second protrusion 36 forms a pulse waveform similar to having peaks and troughs.

[0037] During gas turbine operation, compared to a single protrusion, the two protrusions of the pulse waveform, in the circumferential direction of the turbine, have a gap between at least one of the first protrusion 35 and the second protrusion 36 and at least one blade (first blade 1 and / or second blade 2). This allows the elastic seal 3 to adapt not only to the reduction of the expansion gap but also to the compression exerted on it by the blade (first blade 1 and / or second blade 2) after the expansion gap decreases, thus accommodating the expansion of the first blade 1 and the second blade 2 in the circumferential direction of the turbine. In other words, the elastic seal 3 can accommodate a larger expansion gap between the two blades. In the radial direction of the turbine, the first protrusion 35 and the second protrusion 36 have certain dimensions, enabling them to form larger compressive or tensile deformations in the radial direction, thereby accommodating the radial expansion of the first blade 1 and the second blade 2 (misalignment of the two sealing grooves 11). When the first blade 1 and the second blade 2 expand simultaneously in the radial and circumferential directions of the turbine, the elastic seal 3 can also undergo adaptive deformation to ensure that the sealing performance is not affected.

[0038] In some embodiments, the first blade 1 is provided with a first clearance groove 13, a portion of a first protrusion 35 is located within the first clearance groove 13, and the first protrusion 35 abuts against the second blade 2. The second blade 2 is provided with a second clearance groove 21, a portion of a second protrusion 36 is located within the second clearance groove 21, and the second protrusion 36 abuts against the second blade 2. Figure 1 and Figure 2 As shown, the right side portion of the first protrusion 35 and the left side portion of the second protrusion 36 are opposite each other in the inward and outward directions.

[0039] When assembling the elastic seal 3, the first blade 1, and the second blade 2, a preload is applied so that the first protrusion 35 contacts the second blade 2 and the second protrusion 36 contacts the first blade 1. In the initial state, the first clearance groove 13 is provided so that the left side of the first protrusion 35 is spaced apart from the first blade 1, and the second clearance groove 21 is provided so that the right side of the second protrusion 36 is spaced apart from the second blade 2.

[0040] like Figure 2As shown, the right side of the first protrusion 35 abuts against the second blade 2 to form a first-level seal between the right side of the elastic seal 3 and the second blade 2. The cooperation between the second sealing section 33 and the sealing groove 11 of the second blade 2 forms a second-level seal between the right side of the elastic seal 3 and the second blade 2. The cooperation between the second limiting section 34 and the limiting groove 12 of the second blade 2 forms a third-level seal between the right side of the elastic seal 3 and the second blade 2. The left side of the second protrusion 36 abuts against the first blade 1 to form a first-level seal between the left side of the elastic seal 3 and the second blade 2. The cooperation between the first sealing section 32 and the sealing groove 11 of the first blade 1 forms a second-level seal between the left side of the elastic seal 3 and the first blade 1. The cooperation between the first limiting section 31 and the limiting groove 12 of the first blade 1 forms a third-level seal between the left side of the elastic seal 3 and the first blade 1. Thus, the first protrusion 35 abuts against the second blade 2, and the second protrusion 36 abuts against the second blade 2, increasing the sealing layer between the elastic seal 3 and the first blade 1 and the second blade 2, thereby improving the sealing performance of the elastic seal 3.

[0041] Furthermore, the first protrusion 35 includes a first connecting segment 351, a first arcuate segment 352, and a second connecting segment 353 connected in sequence. The first connecting segment 351 is connected to the first sealing segment 32, and the first arcuate segment 352 and / or the second connecting segment 353 abut against the second blade 2. The second protrusion 36 includes a third connecting segment 361, a second arcuate segment 362, and a fourth connecting segment 363 connected in sequence. The third connecting segment 361 is connected to the second connecting segment 353, and the third connecting segment 361 and / or the second arcuate segment 362 abut against the first blade 1. The fourth connecting segment 363 is connected to the second sealing segment 33. The openings of the first arcuate segment 352 and the second arcuate segment 362 are arranged facing each other. Figure 2 As shown, the opening of the first arc segment 352 faces inward, and the opening of the second arc segment 362 faces outward.

[0042] Therefore, the pulse waveform formed by the first protrusion 35 and the second protrusion 36 is relatively smooth, which is convenient for processing and shaping. Furthermore, the first arc segment 352 and the second arc segment 362 themselves have certain dimensions in the circumferential and radial directions of the turbine, which can deform to cope with extrusion and shear stress.

[0043] Specifically, the two ends of the first arc segment 352 are tangent to the first connecting segment 351 and the second connecting segment 353, respectively, and the two ends of the second arc segment 362 are tangent to the third connecting segment 361 and the fourth connecting segment 363, respectively.

[0044] In some embodiments, the first clearance groove 13 communicates with the sealing groove 11 of the first blade 1, which facilitates the installation of the left end of the elastic seal 3 with the first blade 1. The second clearance groove 21 communicates with the sealing groove 11 of the second blade 2, which facilitates the installation of the right end of the elastic seal 3 with the second blade 2.

[0045] In some embodiments, the orientation of the first limiting segment 31 is opposite to the protrusion orientation of the first protrusion 35, and the orientation of the second limiting segment 34 is opposite to the protrusion orientation of the second protrusion 36. For example... Figure 2 As shown, the first limiting segment 31 faces inward, and the second limiting segment 34 faces outward.

[0046] Because the first protrusion 35 and the first limiting segment 31 are relatively close and require space for bending, the orientation of the first limiting segment 31 is opposite to the protrusion orientation of the first protrusion 35. This reduces the space occupied and consumed by the first blade 1 on the outer side of the first sealing segment 32, avoiding adverse effects on the strength of the portion of the first blade 1 on the outer side of the first sealing segment 32. Furthermore, it reduces the formation of stress concentration areas within the distance range from the first protrusion 35 to the first limiting segment 31, thus improving the strength of the elastic seal 3. Similarly, the orientation of the second limiting segment 34 is opposite to the protrusion orientation of the second protrusion 36, avoiding adverse effects on the strength of the portion of the first blade 1 on the inner side of the second sealing segment 33. This also reduces the formation of stress concentration areas within the distance range from the second protrusion 36 to the second limiting segment 34, thus improving the strength of the elastic seal 3.

[0047] In some embodiments, both the first sealing section 32 and the second sealing section 33 are provided with sealing teeth 321. The sealing teeth 321 abut against the wall of the sealing groove 11 and are located on the cold air side of the turbine. The sealing teeth 321 can block the airflow, improve the blocking effect of the first sealing section 32 and the second sealing section 22, and further improve the sealing performance of the elastic seal 3.

[0048] Specifically, in this embodiment, the first sealing section 32 and the second sealing section 33 each have five sealing teeth 321. In other embodiments, the first sealing section 32 and the second sealing section 33 have three or four sealing teeth 321.

[0049] like Figure 2As shown, in this embodiment, the first sealing section 32 and the second sealing section 33 are opposite each other in the circumferential direction of the turbine. Therefore, the sealing groove 11 of the first blade 1 and the sealing groove 11 of the second blade 2 are opposite each other in the circumferential direction of the turbine. Because the turbine is relatively large with a large diameter, while the elastic seal 3 has a relatively small circumferential dimension, the first sealing section 32 and the second sealing section 33 being opposite each other in the circumferential direction of the turbine can be considered as being on the same straight line. Thus, the elastic seal 3 has a centrally symmetrical structure, with the center of symmetry being the connection point of the second connecting section 353 and the third connecting section 361, which facilitates the processing and forming of the elastic seal 3.

[0050] In some other embodiments, the first sealing segment 32 and the second sealing segment 33 are staggered in the inward and outward directions, that is, the first sealing segment 32 and the second sealing segment 33 are not opposite each other in the circumferential direction of the turbine. Then, the lengths of the first connecting segment 351 and the second connecting segment 353 are different, and the lengths of the third connecting segment 361 and the fourth connecting segment 363 are different. In the radial direction of the turbine, when the first blade 1 and the second blade 2 deform to different degrees and cause radial compression to the elastic seal 3, the shorter first connecting segment 351 and the fourth connecting segment 363 (or the second connecting segment 353 and the third connecting segment 361) are more likely to deform and compress the first arc segment 352 and the second arc segment 362 to deform, thereby coping with the shear stress generated by the compression.

[0051] The turbine of this utility model is described below.

[0052] The turbine of this utility model embodiment includes a turbine body and a blade sealing assembly 100. The blade sealing assembly 100 is disposed in the turbine body, and the first blade 1 and the second blade 2 are arranged at intervals along the circumference of the turbine body.

[0053] Therefore, the turbine in this embodiment of the invention has good sealing performance on both the cold air side and the hot air side.

[0054] The following describes a gas turbine according to an embodiment of the present invention.

[0055] The gas turbine of this utility model embodiment includes the blade sealing assembly 100 of any embodiment or the turbine of any embodiment.

[0056] Therefore, the gas turbine of this utility model embodiment has high efficiency, good economy and safety.

[0057] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model.

[0058] 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 the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0059] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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 utility model according to the specific circumstances.

[0060] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0061] In this utility model, 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 this utility model. 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.

[0062] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A blade sealing assembly (100), characterized in that, include: The first blade (1) and the second blade (2) have an expansion gap between them. The first blade (1) and the second blade (2) are provided with a connected sealing groove (11) and a limiting groove (12). One end of the sealing groove (11) faces the expansion gap, and the other end of the sealing groove (11) is cross-connected with the limiting groove (12). The elastic seal (3) includes a first limiting section (31), a first sealing section (32), a protrusion, a second sealing section (33), and a second limiting section (34) connected in sequence. The first limiting section (31) is located in the limiting groove (12) of the first blade (1), the first sealing section (32) is located in the sealing groove (11) of the first blade (1), the protrusion is located in the expansion gap, the second sealing section (33) is located in the sealing groove (11) of the second blade (2), and the second limiting section (34) is located in the limiting groove (12) of the second blade (2).

2. The blade sealing assembly (100) according to claim 1, characterized in that, The protrusion has two parts, namely a first protrusion (35) and a second protrusion (36). The protrusions of the first protrusion (35) and the second protrusion (36) face opposite directions. One end of the first protrusion (35) is connected to the first sealing section (32), and the other end of the first protrusion (35) is connected to one end of the second protrusion (36). The other end of the second protrusion (36) is connected to the second sealing section (33).

3. The blade sealing assembly (100) according to claim 2, characterized in that, The first blade (1) is provided with a first clearance groove (13), a portion of the first protrusion (35) is located in the first clearance groove (13), and the first protrusion (35) abuts against the second blade (2); the second blade (2) is provided with a second clearance groove (21), a portion of the second protrusion (36) is located in the second clearance groove (21), and the second protrusion (36) abuts against the second blade (2).

4. The blade sealing assembly (100) according to claim 3, characterized in that, The first protrusion (35) includes a first connecting segment (351), a first arc-shaped segment (352), and a second connecting segment (353) connected in sequence. The first connecting segment (351) is connected to the first sealing segment (32), and the first arc-shaped segment (352) and / or the second connecting segment (353) abut against the second blade (2). The second protrusion (36) includes a third connecting segment (361), a second arc-shaped segment (362), and a fourth connecting segment (363) connected in sequence. The third connecting segment (361) is connected to the second connecting segment (353), and the third connecting segment (361) and / or the second arc-shaped segment (362) abut against the first blade (1). The fourth connecting segment (363) is connected to the second sealing segment (33). The openings of the first arc-shaped segment (352) and the second arc-shaped segment (362) are arranged facing each other.

5. The blade sealing assembly (100) according to claim 3, characterized in that, The first clearance groove (13) is connected to the sealing groove (11) of the first blade (1), and the second clearance groove (21) is connected to the sealing groove (11) of the second blade (2).

6. The blade sealing assembly (100) according to claim 2, characterized in that, The orientation of the first limiting segment (31) is opposite to the protrusion orientation of the first protrusion (35), and the orientation of the second limiting segment (34) is opposite to the protrusion orientation of the second protrusion (36).

7. The blade sealing assembly (100) according to claim 1, characterized in that, Both the first sealing section (32) and the second sealing section (33) are provided with sealing teeth (321), the sealing teeth (321) abut against the wall of the sealing groove (11), and the sealing teeth (321) are located on the cold air side of the turbine.

8. The blade sealing assembly (100) according to claim 1, characterized in that, The first sealing section (32) and the second sealing section (33) are opposite each other in the circumferential direction of the turbine.

9. A turbine, characterized in that, The turbine body includes a turbine body and a blade sealing assembly (100), wherein the blade sealing assembly (100) is the blade sealing assembly (100) according to any one of claims 1-8, the blade sealing assembly (100) is disposed in the turbine body, and the first blade (1) and the second blade (2) are arranged at intervals along the circumference of the turbine body.

10. A gas turbine, characterized in that, Includes the blade sealing assembly (100) according to any one of claims 1-8 or the turbine according to claim 9.

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