Anti-loosening strips and gas turbines

Abstract

This invention discloses an anti-loosening strip and a gas turbine. The anti-loosening strip is used to clamp between a carrier and a blade, and includes a first strip, a second strip, and a temperature regulating component. The first strip and the second strip are arranged opposite to each other and connected. At least one of the first strip and the second strip is made of a shape memory alloy. The temperature regulating component is disposed within the shape memory alloy and is used to adjust the temperature of the shape memory alloy so that the supporting force of the anti-loosening strip between the carrier and the blade is adjustable. The anti-loosening strip of this invention can automatically change its shape as needed, thereby adjusting the magnitude of the outwardly applied elastic force. This allows the anti-loosening strip to fully support the carrier and the blade, ensuring a large frictional force between the carrier and the blade and preventing the blade from easily sliding laterally relative to the carrier.

Description

Technical Field

[0001] This invention relates to the field of gas turbine technology, specifically to an anti-loosening strip and a gas turbine. Background Technology

[0002] A gas turbine is a power device that converts the internal energy of fuel into mechanical energy. The compressor section of a gas turbine mainly includes moving blades, stationary blades, cylinders, retaining rings, and a turbine disk. The roots of the stationary blades are usually fitted into the root slots of the retaining rings or cylinders, while the roots of the moving blades are usually fitted into the root slots of the turbine disk. During operation, the moving blades rotate synchronously with the turbine disk, thereby achieving the compression effect.

[0003] However, in the existing technology, when the gas turbine is in the low-speed stage such as startup and blade tip grinding, the centrifugal force of the moving blade is small and the frictional force between the moving blade and the positioning surface of the blade root groove is small, which makes the moving blade prone to lateral sliding. This is not conducive to the stable operation of the gas turbine and also reduces the overall compression efficiency. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] To address this, this invention provides an anti-loosening pad that can adjust its shape as needed, thereby adjusting the magnitude of the outward elastic force. This allows the anti-loosening pad to fully support the carrier and the blade, ensuring a large frictional force between them and preventing the blade from easily sliding laterally relative to the carrier.

[0006] This invention also proposes a gas turbine including the aforementioned anti-loosening strip.

[0007] The anti-loosening strip of this invention is used to clamp between the carrier and the blade, and includes:

[0008] A first pad and a second pad are arranged opposite to each other and connected, and at least one of the first pad and the second pad is made of shape memory alloy.

[0009] A temperature regulating element is disposed within the shape memory alloy, and the temperature regulating element is used to adjust the temperature of the shape memory alloy so that the supporting force of the anti-loosening pad between the carrier and the blade is adjustable.

[0010] In some embodiments, one longitudinal edge of the first pad is connected to one longitudinal edge of the second pad, and the other longitudinal edge of the first pad is connected to the other longitudinal edge of the second pad. The first pad and the second pad are arranged at intervals and define an inner cavity between the first pad and the second pad.

[0011] In some embodiments, one of the longitudinal edges of the first pad and the second pad is provided with a latching protrusion, and the other is provided with a latching groove. The latching protrusion engages with the latching groove to connect the longitudinal edges of the first pad and the second pad.

[0012] In some embodiments, both the card protrusion and the card slot extend along the extension direction of the longitudinal edge.

[0013] In some embodiments, the width dimension of the inner cavity in the relative direction of the first and second pads first increases and then decreases along the transverse direction of the anti-loosening pad.

[0014] In some embodiments, the first pad strip includes two first inclined sections and a first straight section, the first straight section being connected between the two first inclined sections;

[0015] The second pad includes two second inclined sections and a second straight section, with the second straight section connecting the two second inclined sections;

[0016] The temperature regulating element is disposed in at least one of the first straight section and the second straight section.

[0017] In some embodiments, both the first straight section and the second straight section are provided with a plurality of temperature regulating elements, the plurality of temperature regulating elements in the first straight section are arranged at intervals along the lateral direction, and the plurality of temperature regulating elements in the second straight section are arranged at intervals along the lateral direction.

[0018] In some embodiments, the first pad has a first groove on its lateral side, and the second pad has a second groove on its lateral side;

[0019] And / or, the temperature regulating element is a heating wire, which extends along the longitudinal direction of the anti-loosening pad.

[0020] The gas turbine of this invention includes:

[0021] A carrier and blades, wherein the blades are assembled on the carrier;

[0022] An anti-loosening pad is disposed between the carrier and the blade. The shape of the anti-loosening pad changes with different temperatures so that the supporting force applied by the anti-loosening pad between the carrier and the blade is adjustable.

[0023] In some embodiments, the anti-loosening strip is the anti-loosening strip as described in any of the above embodiments;

[0024] The gas turbine includes stationary blades, compressor retainer rings, moving blades, and a turbine disk. The stationary blades are assembled to the compressor retainer rings, and the moving blades are assembled to the turbine disk. The compressor retainer rings or the turbine disk constitute the carrier, and the stationary blades or the moving blades constitute the blades.

[0025] Beneficial effects: The anti-loosening pad and gas turbine of the present invention can adjust the shape of the anti-loosening pad as needed, thereby adjusting the magnitude of the outward elastic force. This allows the anti-loosening pad to fully support the carrier and the blade, ensuring a large frictional force between the carrier and the blade and preventing the blade from easily sliding laterally relative to the carrier. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the anti-loosening pad according to an embodiment of the present invention.

[0027] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle.

[0028] Figure 3 This is a partial structural schematic diagram of the gas turbine according to an embodiment of the present invention.

[0029] Figure 4 yes Figure 3 A magnified view of a portion of point B in the middle.

[0030] Figure 5 This is a schematic diagram of the arrangement of the anti-loosening gaskets between the stationary blade and the compressor retaining ring in an embodiment of the present invention.

[0031] Figure 6 yes Figure 3 A magnified view of a portion of point C.

[0032] Figure 7 This is a schematic diagram of the arrangement of the anti-loosening pads between the moving blade and the wheel disc in an embodiment of the present invention.

[0033] Figure label:

[0034] 100-Anti-loosening pad;

[0035] 1-First pad; 11-First longitudinal edge; 12-Protrusion; 13-First inclined section; 14-First straight section; 15-First groove;

[0036] 2-Second pad; 21-Second longitudinal edge; 22-Slot; 23-Second inclined section; 24-Second straight section; 25-Second groove;

[0037] 3-Temperature regulating component; 4-Inner cavity;

[0038] 200-Stationary vane; 300-Compressor retaining ring; 400-Moving vane; 500-Disc; 600-Outer cylinder; 700-Central shaft. Detailed Implementation

[0039] 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.

[0040] In this embodiment of the invention, the anti-loosening strip 100 is used to clamp between a carrier and a blade. For example, the carrier can be a retaining ring of a gas turbine, and the blade can be a moving blade 400 or a stationary blade 200 of a gas turbine. The blade can be assembled on the carrier, and the anti-loosening strip 100 can be clamped and fixed in the gap between the carrier and the blade.

[0041] like Figure 1 and Figure 2 As shown, the anti-loosening pad 100 of this embodiment of the invention includes a first pad 1, a second pad 2, and a temperature regulating element 3.

[0042] The first spacer 1 and the second spacer 2 are arranged opposite to each other and connected, and at least one of the first spacer 1 and the second spacer 2 is made of shape memory alloy. For example, such as Figure 2 As shown, the first pad 1 and the second pad 2 can both be generally long strips. The first pad 1 and the second pad 2 can be stacked and arranged, and the first pad 1 and the second pad 2 extend in the same direction.

[0043] The first spacer 1 and the second spacer 2 can be directly connected and fixed. Both the first spacer 1 and the second spacer 2 can be made of shape memory alloy, specifically titanium-nickel alloy, copper-nickel alloy, etc. In some other embodiments, one of the first spacer 1 and the second spacer 2 can also be made of shape memory alloy.

[0044] It should be noted that shape memory alloys have a shape memory effect, and when the temperature of the shape memory alloy changes, the shape and form of the shape memory alloy itself will also change. For example, shape memory alloys have a phase transition temperature, and when the temperature exceeds the phase transition temperature, the shape memory alloy can recover its shape and form.

[0045] Temperature regulating element 3 is located inside the shape memory alloy, and temperature regulating element 3 is used to adjust the temperature of the shape memory alloy so that the supporting force of the anti-loosening pad 100 between the carrier and the blade is adjustable.

[0046] For example, the temperature regulating element 3 can be a heating wire, specifically a heating resistance wire, and can be pre-embedded in the shape memory alloy. In use, current can be passed into the temperature regulating element 3, thereby heating the shape memory alloy. The heated shape memory alloy will undergo changes in shape and form, which will cause a change in the magnitude of the supporting force applied by the anti-loosening pad 100 between the carrier and the blade.

[0047] For example, when the supporting force increases, the compressive force between the carrier and the blade increases, which in turn increases the frictional force between the carrier and the blade. The increased frictional force restricts the relative movement or slippage between the carrier and the blade, thus ensuring the stability of the relative position of the carrier and the blade.

[0048] The anti-loosening pad 100 of this invention can adjust its shape as needed, thereby adjusting the magnitude of the outward elastic force. This allows the anti-loosening pad 100 to fully support the carrier and the blade, ensuring a large frictional force between the carrier and the blade. This prevents the blade from easily sliding laterally relative to the carrier, thus avoiding a reduction in the overall operational stability and compression efficiency of the gas turbine due to lateral slippage of the blade.

[0049] In some embodiments, one longitudinal edge of the first pad 1 is connected to one longitudinal edge of the second pad 2, the other longitudinal edge of the first pad 1 is connected to the other longitudinal edge of the second pad 2, and the first pad 1 and the second pad 2 are arranged at intervals and define an inner cavity 4 between the first pad 1 and the second pad 2.

[0050] For example, such as Figure 2 As shown, the first pad 1 includes two first longitudinal edges 11, both extending along the longitudinal direction of the first pad 1, and the two first longitudinal edges 11 are the left and right edges of the first pad 1, respectively. The second pad 2 includes two second longitudinal edges 21, both extending along the longitudinal direction of the second pad 2, and the two second longitudinal edges 21 are the left and right edges of the second pad 2, respectively.

[0051] The first longitudinal edge 11 on the left side of the first pad 1 and the second longitudinal edge 21 on the left side of the second pad 2 are connected and fixed, and the first longitudinal edge 11 on the right side of the first pad 1 and the second longitudinal edge 21 on the right side of the second pad 2 are also connected and fixed. The other parts of the first pad 1 and the second pad 2 can be arranged at intervals in the opposite direction of the first pad 1 and the second pad 2, so that a flat inner cavity 4 can be formed between the first pad 1 and the second pad 2.

[0052] Thus, on the one hand, the integrated design of the first pad 1 and the second pad 2 is realized, and on the other hand, the inner cavity 4 can also provide deformation space for the deformation of the first pad 1 and the second pad 2, which is also conducive to improving the overall elastic performance of the anti-loosening pad 100.

[0053] In some embodiments, one of the longitudinal edges of the first pad 1 and the second pad 2 is provided with a latching protrusion 12 and the other is provided with a latching groove 22. The latching protrusion 12 is fitted into the latching groove 22 to connect the longitudinal edges of the first pad 1 and the second pad 2.

[0054] For example, such as Figure 2 As shown, the locking protrusion 12 can be integrally formed on the first longitudinal edge 11 of the first pad 1, and both first longitudinal edges 11 of the first pad 1 are provided with locking protrusions 12. Both second longitudinal edges 21 of the second pad 2 can be provided with a locking groove 22. The locking protrusion 12 and the locking groove 22 can both extend along the longitudinal direction of the anti-loosening pad 100.

[0055] During assembly, the first pad 1 can be stacked on top of the second pad 2. The two first longitudinal edges 11 of the first pad 1 and the two second longitudinal edges 21 of the second pad 2 are arranged opposite each other. The protrusion 12 of the first longitudinal edge 11 on the left side of the first pad 1 can engage with the groove 22 of the second longitudinal edge 21 on the left side of the second pad 2, and the protrusion 12 of the first longitudinal edge 11 on the right side of the second pad 2 can engage with the groove 22 of the second longitudinal edge 21 on the right side of the second pad 2. This facilitates the connection, fixation, and assembly of the first pad 1 and the second pad 2.

[0056] In some embodiments, the width dimension of the inner cavity 4 in the relative direction of the first pad 1 and the second pad 2 first increases and then decreases along the transverse direction of the anti-loosening pad 100. For example, as Figure 2 As shown, the inner cavity 4 can be flat, and its width can be M. The anti-loosening strip 100 can be lateral, and its width can be left-right. The width M can increase and then decrease from left to right. This satisfies the assembly requirement of the two longitudinal edges of the first strip 1 and the second strip 2 being close together, and also makes the space in the middle of the inner cavity 4 large enough to fully meet the deformation requirements of the first strip 1 and the second strip 2.

[0057] In some embodiments, the first pad 1 includes two first inclined sections 13 and a first straight section 14, the first straight section 14 being connected between the two first inclined sections 13, the second pad 2 includes two second inclined sections 23 and a second straight section 24, the second straight section 24 being connected between the two second inclined sections 23, and the temperature regulating element 3 is disposed on at least one of the first straight section 14 and the second straight section 24.

[0058] For example, such as Figure 2As shown, the first straight section 14 can be arranged horizontally. At this time, the first inclined section 13 on the left side of the first pad 1 can be arranged inclined downwards, and the first inclined section 13 on the right side of the first pad 1 can also be arranged inclined downwards. The distance between the two first inclined sections 13 of the first pad 1 in the left and right directions can gradually increase from top to bottom.

[0059] The second straight section 24 can also be arranged horizontally. In this case, the second inclined section 23 on the left side of the second pad 2 can be arranged inclined upwards, and the second inclined section 23 on the right side of the second pad 2 can also be arranged inclined upwards. The distance between the two second inclined sections 23 of the second pad 2 in the left and right directions can gradually increase from bottom to top.

[0060] Multiple temperature regulating components 3 can be provided. Some temperature regulating components 3 can be provided on the first straight section 14, and other temperature regulating components 3 can be provided on the second straight section 24, thereby fully meeting the needs of adjusting the shape of the first pad 1 and the second pad 2.

[0061] In some embodiments, both the first straight section 14 and the second straight section 24 are provided with a plurality of temperature regulating elements 3. The plurality of temperature regulating elements 3 in the first straight section 14 are arranged at intervals along the lateral direction, and the plurality of temperature regulating elements 3 in the second straight section 24 are arranged at intervals along the lateral direction.

[0062] For example, such as Figure 2 As shown, the temperature regulating element 3 is a heating wire. Multiple temperature regulating elements 3 can be embedded in both the first straight section 14 and the second straight section 24. The multiple temperature regulating elements 3 in the first straight section 14 can be arranged at intervals along the left and right directions, and the multiple temperature regulating elements 3 in the second straight section 24 can be arranged at intervals along the left and right directions.

[0063] The number of temperature regulating elements 3 in the first straight section 14 can be the same as the number of temperature regulating elements 3 in the second straight section 24, and the multiple temperature regulating elements 3 in the first straight section 14 and the multiple temperature regulating elements 3 in the second straight section 24 can be arranged one-to-one in the vertical direction. This ensures the uniformity of the thermal deformation of the first pad 1 and the second pad 2 at various positions, which is beneficial to enhancing the controllability of the deformation of the first pad 1 and the second pad 2.

[0064] In some embodiments, the lateral edge of the first pad 1 is provided with a first groove 15, and the lateral edge of the second pad 2 is provided with a second groove 25. For example, as Figure 2 As shown, the lateral edge of the first pad 1 is the edge between the two first longitudinal edges 11 of the first pad 1, and the first groove 15 can be a semi-circular groove, which can be located in the middle of the lateral edge of the first pad 1.

[0065] Similarly, the lateral edge of the second pad 2 is the edge between the two second longitudinal edges 21 of the second pad 2, and the second groove 25 can be a semi-circular groove, which can be located in the middle of the lateral edge of the second pad 2.

[0066] The first groove 15 and the second groove 25 can serve as both a machining and positioning tool, and also as a tool for avoidance and positioning during assembly. For example, the first groove 15 and the second groove 25 can be used for the positioning pins of the top pressure blades to pass through, thereby fully ensuring the structural stability of the assembly.

[0067] In some embodiments, the temperature regulating element 3 is a heating wire, which extends along the longitudinal direction of the anti-loosening pad 100. For example, as Figure 2 As shown, the temperature regulating component 3 can be pre-embedded in the first straight section 14 and the second straight section 24. Multiple temperature regulating components 3 in the first straight section 14 can be distributed on both sides of the first groove 15, and multiple temperature regulating components 3 in the second straight section 24 can be distributed on both sides of the second groove 25. Each temperature regulating component 3 can be arranged along the longitudinal direction of the anti-loosening pad 100, thereby ensuring the uniform distribution of the temperature regulating component 3.

[0068] The gas turbine of an embodiment of the present invention is described below.

[0069] The gas turbine of this invention includes a carrier, blades, and anti-loosening strips 100.

[0070] The blade is assembled on the carrier, and the anti-loosening pad 100 is placed between the carrier and the blade. The shape of the anti-loosening pad 100 changes with different temperatures so that the supporting force applied by the anti-loosening pad 100 between the carrier and the blade is adjustable.

[0071] For example, the blades can be moving blades 400 and stationary blades 200 of a gas turbine, and the carrier can be a structural component for assembling moving blades 400 and stationary blades 200. The blades and carrier can be assembled in the radial direction of the gas turbine, and a gap can be reserved between the blades and carrier. The anti-loosening pad 100 can be installed in the gap.

[0072] In use, the shape of the anti-loosening pad 100 can be adjusted by actively regulating its temperature, etc. By adjusting the shape of the anti-loosening pad 100, the magnitude of the supporting force applied by the anti-loosening pad 100 between the blade and the carrier can be adjusted, thereby adjusting the magnitude of the frictional force between the blade and the carrier. This restrains the relative slippage between the blade and the carrier, preventing the blade from easily slipping laterally due to insufficient squeezing force between the blade and the carrier caused by the small centrifugal force of the gas turbine.

[0073] In some embodiments, the anti-loosening strip 100 is the anti-loosening strip 100 described in any of the above embodiments. The gas turbine includes a stationary blade 200, a compressor retaining ring 300, a moving blade 400, and a wheel disc 500. The stationary blade 200 is assembled to the compressor retaining ring 300, and the moving blade 400 is assembled to the wheel disc 500. The compressor retaining ring 300 or the wheel disc 500 constitutes a carrier, and the stationary blade 200 or the moving blade 400 constitutes a blade.

[0074] For example, such as Figure 3 As shown, the gas turbine also includes an outer cylinder 600 and a central shaft 700. The aforementioned turbine disk 500 can be fitted onto the outer periphery of the central shaft 700. Multiple moving blades 400 can be provided, and multiple moving blades 400 can be assembled in the blade root grooves on the outer periphery of the turbine disk 500. The compressor retaining ring 300 can be fitted onto the outer periphery of the multiple moving blades 400. The aforementioned outer cylinder 600 can be located on the outer periphery of the compressor retaining ring 300, and each blade root groove on the inner side of the compressor retaining ring 300 can be equipped with a stationary blade 200. The multiple moving blades 400 and the multiple stationary blades 200 are arranged alternately along the axial direction of the central shaft 700.

[0075] like Figure 4 As shown, anti-loosening strips 100 can be installed between the groove walls of each stator vane 200 and the blade root groove of the compressor retaining ring 300, such as... Figure 5 As shown, multiple anti-loosening strips 100 can be arranged at equal intervals along the circumferential direction of the central axis 700. Similarly, as... Figure 6 As shown, anti-loosening strips 100 can also be installed between the groove walls of the blade root grooves of each moving blade 400 and the impeller 500, such as... Figure 6 As shown, these anti-loosening pads 100 are also arranged at equal intervals along the circumferential direction of the central axis 700.

[0076] When the gas turbine is in the startup phase or the low-speed blade tip grinding phase, current can be passed into the temperature regulating element 3 (heating resistance wire) of each anti-loosening pad 100. At this time, the temperature of the temperature regulating element 3 will rise, thereby causing the temperature of each anti-loosening pad 100 to rise as well. When the temperature of the anti-loosening pad 100 exceeds the phase change temperature, the anti-loosening pad 100 will change its shape or return to its initial shape. By changing its own shape, the anti-loosening pad 100 can apply a greater elastic force. Under the action of this increased elastic force, there will also be a greater frictional force between the stationary blade 200 and the compressor retaining ring 300, and between the moving blade 400 and the impeller 500, thereby avoiding the situation where the stationary blade 200 and the moving blade 400 are prone to lateral slippage.

[0077] In some embodiments, each temperature regulating element 3 can be externally connected via wires, etc. When the anti-loosening pad 100 is installed on the moving blade 400 and the wheel 500, since the moving blade 400 and the wheel 500 will rotate during use, in order to avoid the wires from getting tangled and interfering, the external connection of each wire can be achieved by setting a conductive slip ring, thereby satisfying the conductivity requirements and avoiding problems such as tangling caused by rotation.

[0078] 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 do not 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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. An anti-loosening strip, characterized in that, For clamping between the carrier and the blade, and includes: A first pad and a second pad are arranged opposite to each other and connected, and at least one of the first pad and the second pad is made of shape memory alloy. A temperature regulating component is disposed within the shape memory alloy, and the temperature regulating component is used to adjust the temperature of the shape memory alloy so that the supporting force of the anti-loosening pad between the carrier and the blade is adjustable; One longitudinal edge of the first pad is connected to one longitudinal edge of the second pad, and the other longitudinal edge of the first pad is connected to the other longitudinal edge of the second pad. The first pad and the second pad are arranged at intervals and an inner cavity is defined between the first pad and the second pad. The first pad strip includes two first inclined sections and a first straight section, wherein the first straight section is connected between the two first inclined sections; The second pad includes two second inclined sections and a second straight section, with the second straight section connecting the two second inclined sections; The temperature regulating element is disposed in at least one of the first straight section and the second straight section.

2. The anti-loosening strip according to claim 1, characterized in that, One of the longitudinal edges of the first pad and the second pad is provided with a locking protrusion, and the other is provided with a locking groove. The locking protrusion engages with the locking groove to connect the longitudinal edges of the first pad and the second pad.

3. The anti-loosening strip according to claim 2, characterized in that, Both the card protrusion and the card slot extend along the longitudinal side.

4. The anti-loosening strip according to claim 1, characterized in that, The width of the inner cavity in the relative direction of the first and second pads first increases and then decreases along the transverse direction of the anti-loosening pad.

5. The anti-loosening strip according to claim 4, characterized in that, Both the first straight section and the second straight section are provided with a plurality of temperature regulating components. The plurality of temperature regulating components in the first straight section are arranged at intervals along the lateral direction, and the plurality of temperature regulating components in the second straight section are arranged at intervals along the lateral direction.

6. The anti-loosening strip according to any one of claims 1-5, characterized in that, The first pad has a first groove on its lateral side, and the second pad has a second groove on its lateral side; And / or, the temperature regulating element is a heating wire, which extends along the longitudinal direction of the anti-loosening pad.

7. A gas turbine, characterized in that, include: A carrier and blades, wherein the blades are assembled on the carrier; The anti-loosening pad is as described in any one of claims 1-6 above, the anti-loosening pad is disposed between the carrier and the blade, and the shape of the anti-loosening pad changes with different temperatures so that the supporting force applied by the anti-loosening pad between the carrier and the blade is adjustable.

8. The gas turbine according to claim 7, characterized in that, The gas turbine includes stationary blades, compressor retainer rings, moving blades, and a turbine disk. The stationary blades are assembled to the compressor retainer rings, and the moving blades are assembled to the turbine disk. The compressor retainer rings or the turbine disk constitute the carrier, and the stationary blades or the moving blades constitute the blades.

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