Gas turbine with coating position adjusting function

Abstract

The invention provides a gas turbine with a coating position adjusting function. The gas turbine with the coating position adjusting function comprises an air cylinder, an adjusting ring, an adjusting piece and an abradable coating, an adjusting groove extending in the circumferential direction is formed in the inner circumferential face of the air cylinder, the adjusting ring extends in the circumferential direction of the air cylinder and is arranged in the adjusting groove, the abradable coating is arranged on the inner circumferential face of the adjusting ring, and the abradable coating is used for being arranged opposite to a movable blade. The adjusting piece is connected between the adjusting ring and the air cylinder and used for adjusting the position of the adjusting ring in the radial direction of the air cylinder. According to the gas turbine with the coating position adjusting function, the position of the adjusting ring in the radial direction of the air cylinder can be adjusted through the adjusting piece, so that when the abradable coating reaches a certain abrasion amount, the adjusting ring moves towards the interior of the air cylinder in the radial direction of the air cylinder; the problem that the efficiency of the gas turbine is affected due to the fact that the gap between the blade tip of the movable blade and the abradable coating is too large is avoided.

Description

Technical Field

[0001] This invention relates to the field of gas turbines, and more specifically to a gas turbine with a coating position adjustment function. Background Technology

[0002] In related technologies, the inner wall surface of a gas turbine cylinder is provided with a wear-resistant coating. When vibration occurs during gas turbine operation, the blade tip rubs against and wears down the wear-resistant coating, thus preventing direct contact and damage between the blade tip and the inner wall surface of the cylinder. However, the thickness of the wear-resistant coating decreases with wear. Therefore, when the gas turbine is running stably, the gap between the blade tip and the wear-resistant coating increases with the operating time of the gas turbine, leading to a decrease in gas turbine efficiency. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of the present invention propose a gas turbine with coating position adjustment function.

[0005] The gas turbine with coating position adjustment function according to an embodiment of the present invention includes:

[0006] The cylinder comprises an adjusting ring, an adjusting element, and a wear-resistant coating. The inner circumferential surface of the cylinder is provided with an adjusting groove extending circumferentially. The adjusting ring extends circumferentially along the cylinder and is disposed within the adjusting groove. The inner circumferential surface of the adjusting ring is provided with the wear-resistant coating, which is used to be disposed opposite to the moving blade. The adjusting element is connected between the adjusting ring and the cylinder and is used to adjust the radial position of the adjusting ring along the cylinder.

[0007] The gas turbine with coating position adjustment function in this embodiment of the invention has an abrasive coating disposed on an adjustment ring, which is disposed in an adjustment groove of the cylinder to avoid interference with the moving blade. At the same time, the adjustment groove can also limit the position of the adjustment ring along the axial direction of the cylinder so that the abrasive coating and the moving blade are positioned opposite each other. The radial position of the adjustment ring along the cylinder can be adjusted by the adjustment component, so that when the abrasive coating reaches a certain amount of wear, the adjustment ring moves radially toward the inside of the cylinder to avoid the gap between the blade tip of the moving blade and the abrasive coating being too large, which would affect the efficiency of the gas turbine.

[0008] In some embodiments, the cylinder includes a cylinder body and a mounting ring. The inner circumferential surface of the cylinder body is provided with a mounting groove extending circumferentially. The mounting ring is detachably disposed in the mounting groove. The inner circumferential surface of the mounting ring is provided with an adjustment groove. An adjustment member is connected between the adjustment ring and the mounting ring for adjusting the relative position of the adjustment ring and the mounting ring along the radial direction of the cylinder.

[0009] In some embodiments, the axial sidewalls of the adjusting ring are provided with grooves, and the outer peripheral end of the adjusting ring forms an axially extending protrusion.

[0010] The inner circumferential end of the mounting ring is provided with a bend that is relatively close to each other along the axial direction. A limiting groove is formed between the bend and the bottom surface of the adjusting groove. The bend is provided in the groove one by one and can move radially within the groove. The protrusion is provided in the limiting groove one by one and can move radially within the limiting groove.

[0011] In some embodiments, the adjusting member is connected between the outer peripheral wall of the mounting ring and the protrusion, and / or, the adjusting member is connected between the bent portion and the protrusion.

[0012] In some embodiments, the adjusting member is provided on both axial sides of the mounting ring, and the adjusting member is connected to a protrusion located on the same side.

[0013] In some embodiments, the adjusting member is an adjusting screw extending radially along the cylinder, the adjusting screw being disposed on the mounting ring and connected to the adjusting ring.

[0014] In some embodiments, the adjusting screw includes a first adjusting screw and / or a second adjusting screw, wherein the first adjusting screw passes through the outer peripheral wall of the mounting ring and is connected to the protrusion of the adjusting ring, and the second adjusting screw passes through the bent portion of the mounting ring and is connected to the protrusion of the adjusting ring.

[0015] In some embodiments, the adjusting member includes an electromagnetic coil, an adjusting rod, and an elastic element. The electromagnetic coil is disposed on one of the outer peripheral wall or the bend of the mounting ring and surrounds the outer periphery of one end of the adjusting rod. The electromagnetic coil can drive the adjusting rod to move radially along the cylinder. The other end of the adjusting rod is connected to the protrusion of the adjusting ring, thereby driving the adjusting ring to move. The elastic element is disposed between the other of the outer peripheral wall or the bend of the mounting ring and the protrusion of the adjusting ring.

[0016] In some embodiments, the gas turbine with coating position adjustment function further includes an image acquisition device, a power supply device, and a controller. The image acquisition device is disposed on the inner circumferential surface of the cylinder and is used to acquire images of the wearable coating and the blade tip of the moving blade. The controller is connected to the image acquisition device to receive the images and acquire the distance between the wearable coating and the blade tip of the moving blade. The controller and the electromagnetic coil are both connected to the power supply device, and the controller adjusts the current intensity supplied by the power supply device to the electromagnetic coil according to the distance.

[0017] In some embodiments, the adjusting ring includes an arc segment and a seal. The arc segment is provided in multiple ways and is arranged sequentially along the circumference of the adjusting ring. The inner circumferential surface of each arc segment is provided with the wear-resistant coating. Each arc segment is connected to the adjusting member, and the seal is connected between adjacent arc segments.

[0018] In some embodiments, the gas turbine with coating position adjustment function further includes an adhesive layer, the inner circumferential surface of the adjustment ring is provided with a coating groove, the bottom surface of the coating groove is provided with the adhesive layer, the wear-resistant coating is bonded to the adhesive layer and disposed in the coating groove. Attached Figure Description

[0019] Figure 1 This is a partial schematic diagram of a first example of a gas turbine with coating position adjustment function according to an embodiment of the present invention;

[0020] Figure 2 yes Figure 1 A partially enlarged schematic diagram of the mounting ring, adjusting component, and adjusting ring;

[0021] Figure 3 This is a partial schematic diagram of a second example of a gas turbine with coating position adjustment function according to an embodiment of the present invention;

[0022] Figure 4 yes Figure 1 A partially enlarged schematic diagram of the mounting ring, adjusting component, and adjusting ring.

[0023] Figure label:

[0024] 1. Cylinder; 11. Adjustment groove; 111. Limiting groove; 12. Cylinder body; 13. Mounting ring; 131. Bending part; 132. Outer peripheral wall; 14. Mounting groove; 2. Adjustment ring; 21. Groove; 22. Protrusion; 23. Coating groove; 24. Boss; 3. Adjusting component; 31. Adjusting screw; 311. First adjusting screw; 312. Second adjusting screw; 32. Electromagnetic coil; 33. Adjusting rod; 34. Elastic component; 4. Wearable coating; 5. Moving blade; 6. Image acquisition device; 7. Adhesive layer; 8. Stationary blade. Detailed Implementation

[0025] 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.

[0026] The following is for reference. Figures 1-4 A gas turbine with coating position adjustment function according to an embodiment of the present invention is described.

[0027] like Figures 1-4 As shown, the gas turbine with coating position adjustment function in this embodiment of the invention includes a cylinder 1, an adjusting ring 2, an adjusting component 3, and a wearable coating 4.

[0028] The inner circumferential surface of the cylinder 1 is provided with an adjustment groove 11 extending in the circumferential direction. The adjustment ring 2 extends in the circumferential direction of the cylinder 1 and is provided in the adjustment groove 11. The inner circumferential surface of the adjustment ring 2 is provided with a wearable coating 4. The wearable coating 4 is used to be arranged opposite to the moving blade 5. The adjustment member 3 is connected between the adjustment ring 2 and the cylinder 1 and is used to adjust the radial position of the adjustment ring 2 along the cylinder 1.

[0029] like Figure 1 and Figure 3 As shown, the adjusting groove 11 is located on the inner circumferential surface of the cylinder 1, and is along the circumferential direction of the cylinder 1 (e.g., Figure 1 and Figure 3 The adjusting ring 2 is an annular ring extending in the circumferential direction of the cylinder 1, and all or all of the outer circumferential ends of the adjusting ring 2 are located within the adjusting groove 11. A wear-resistant coating 4 is provided on the inner circumferential surface of the adjusting ring 2. The adjusting groove 11 and the moving blade 5 of the gas turbine are located in the axial direction of the cylinder 1 (e.g., axial direction). Figure 1 and Figure 3 At the same position in the left and right directions (as shown), the adjustment groove 11 provides installation space for the adjustment ring 2 and defines the position of the adjustment ring 2 in the left and right directions so that the adjustment ring 2 and the wearable coating 4 surround the outer periphery of the moving blade 5, and the wearable coating 4 is arranged opposite to the moving blade 5 in the radial direction of the cylinder 1.

[0030] Adjusting component 3 is connected between adjusting ring 2 and cylinder 1. Adjusting component 3 allows for adjustment of the radial direction of adjusting ring 2 along cylinder 1 (e.g.,...). Figure 1 and Figure 3 The position of the wearable coating 4 in the vertical direction (as shown) is adjusted to change the radial position of the wearable coating 4 along the cylinder 1.

[0031] When the gas turbine vibrates during operation, the tip of the moving blade 5 rubs against and wears the wearable coating 4. The thickness of the wearable coating 4 decreases with the frequency and duration of the gas turbine's vibration. Simultaneously, during stable operation, the gap between the tip of the moving blade 5 and the wearable coating 4 increases with the wear of the wearable coating 4. When the wearable coating 4 reaches a certain level, the adjusting ring 2 is moved radially inward along the cylinder 1 via the adjusting member 3; in other words, the adjusting ring 2 is moved towards the centerline of the cylinder 1 via the adjusting member 3. The adjusting ring 2 drives the wearable coating 4 towards the moving blade 5 to reduce the gap between the tip of the moving blade 5 and the wearable coating 4 during stable operation, ensuring that the gap between the tip of the moving blade 5 and the wearable coating 4 does not become too large, thus reducing the gas turbine's efficiency.

[0032] In this embodiment of the gas turbine with coating position adjustment function, the wearable coating 4 is disposed on the adjustment ring 2, and the adjustment ring 2 is disposed in the adjustment groove 11 of the cylinder 1 to avoid interference with the moving blade 5. At the same time, the adjustment groove 11 can also limit the position of the adjustment ring 2 along the axial direction of the cylinder 1 so that the wearable coating 4 and the moving blade 5 are arranged opposite to each other. The adjustment member 3 can adjust the radial position of the adjustment ring 2 along the cylinder 1, so that when the wearable coating 4 reaches a certain amount of wear, the adjustment ring 2 moves radially toward the inside of the cylinder 1 to avoid the gap between the blade tip of the moving blade 5 and the wearable coating 4 being too large, which would affect the efficiency of the gas turbine.

[0033] In some embodiments, the cylinder 1 includes a cylinder body 12 and a mounting ring 13. The inner circumferential surface of the cylinder body 12 is provided with a mounting groove 14 extending in the circumferential direction. The mounting ring 13 is detachably disposed in the mounting groove 14. The inner circumferential surface of the mounting ring 13 is provided with an adjustment groove 11. An adjustment member 3 is connected between the adjustment ring 2 and the mounting ring 13 for adjusting the relative position of the adjustment ring 2 and the mounting ring 13 in the radial direction of the cylinder 1.

[0034] like Figures 1-4 As shown, the cylinder body 12 is provided with a mounting groove 14, which is located on the inner circumferential surface of the cylinder body 12 and is along the circumferential direction of the cylinder body 12 (e.g., Figure 1 and Figure 3 The ring extends in the left-right direction (as shown).

[0035] The mounting ring 13 is detachably disposed in the mounting groove 14, preferably but not limited to being snapped into the mounting groove 14. An adjusting groove 11 is provided on the inner circumferential surface of the mounting ring 13, and is circumferential along the mounting ring 13 (e.g., ...). Figure 1 and Figure 3 The ring extends in the left-right direction (as shown). All or all of the outer peripheral ends of the adjusting ring 2 are located in the adjusting groove 11. When the mounting ring 13 is located in the mounting groove 14, all or all of the outer peripheral ends of the adjusting ring 2 are located in the mounting groove 14. Preferably, the remaining part of the adjusting ring 2, except for the part with the wear-resistant coating 4 at the inner peripheral end, is located in the mounting groove 14. The part with the wear-resistant coating 4 at the inner peripheral end of the adjusting ring 2 is located in the mounting groove 14 or extends out of the mounting groove 14 depending on the wear state of the wear-resistant coating 4.

[0036] The adjusting element 3 is connected between the adjusting ring 2 and the mounting ring 13. The position of the adjusting ring 2 relative to the mounting ring 13 can be adjusted and changed along the radial direction of the cylinder 1 by adjusting the adjusting element 3, thereby adjusting and changing the position of the wearable coating 4 along the radial direction of the cylinder 1.

[0037] Since both the adjusting component 3 and the adjusting ring 2 are located on the mounting ring 13, the mounting ring 13, the adjusting component 3 and the adjusting ring 2 can be disassembled and assembled as a whole by removing and installing the mounting ring 13 on the cylinder body 12, so as to facilitate the installation, maintenance and replacement of the adjusting component 3 and the adjusting ring 2, especially when the wearable coating 4 can no longer be worn, the adjusting ring 2 can be replaced.

[0038] In some embodiments, the axial sidewalls of the adjusting ring 2 are provided with grooves 21, and the outer peripheral end of the adjusting ring 2 forms an axially extending protrusion 22.

[0039] like Figure 2 and Figure 4 As shown, the left and right sidewalls of the adjusting ring 2 are both provided with grooves 21, and the outer peripheral end of the adjusting ring 2 (such as...) Figure 2 and Figure 4 The upper end of the adjustment ring 2 shown has a protrusion 22 extending from the left sidewall to the left and a protrusion 22 extending from the right sidewall to the right.

[0040] The inner circumferential end of the mounting ring 13 is provided with a bend 131 that is relatively close to each other along the axial direction. A limiting groove 111 is formed between the bend 131 and the bottom surface of the adjusting groove 11. The bend 131 is provided in the groove 21 in a corresponding manner and can move radially within the groove 21. The protrusion 22 is provided in the limiting groove 111 in a corresponding manner and can move radially within the limiting groove 111.

[0041] like Figure 2 and Figure 4 As shown, the inner circumferential end of the mounting ring 13 (such as...) Figure 2 and Figure 4 The lower end of the mounting ring 13 shown has two bends 131 that are relatively close to each other in the left-right direction. One bend 131 extends to the right from the left side wall of the mounting ring 13, and the other bend 131 extends to the left from the right side wall of the mounting ring 13. The two bends 131 are located in the radial direction of the mounting ring 13 (e.g., ...). Figure 2 and Figure 4 The two parts are positioned at the same position in the vertical direction (as shown), thus moving closer to each other in the horizontal direction and forming the opening of the adjustment groove 11. The left bent part 131 is located in the left groove 21 of the adjustment ring 2, and the right bent part 131 is located in the right groove 21 of the adjustment ring 2. The thickness of the bent part 131 in the radial direction of the cylinder 1 is less than the width of the groove 21 in the radial direction of the cylinder 1. When the adjusting member 3 drives the adjustment ring 2 to move, the bent part 131 moves in the radial direction of the cylinder 1 in the corresponding groove 21.

[0042] Each bend 131 forms a limiting groove 111 between itself and the bottom surface of the adjusting groove 11. The limiting groove 111 is part of the adjusting groove 11. The outer peripheral end of the adjusting ring 2 is located in the adjusting groove 11. The left protrusion 22 of the adjusting ring 2 is located in the left limiting groove 111, and the right protrusion 22 of the adjusting ring 2 is located in the right limiting groove 111. The thickness of the protrusion 22 along the radial direction of the cylinder 1 is less than the width of the limiting groove 111 along the radial direction of the cylinder 1. When the adjusting member 3 drives the adjusting ring 2 to move, the protrusion 22 moves along the radial direction of the cylinder 1 in the corresponding limiting groove 111.

[0043] Therefore, the groove 21 limits the movement distance and the extreme position of the bent part 131, and the limiting groove 111 limits the movement distance and the extreme position of the protrusion 22, thereby limiting the movement distance and the extreme position of the adjusting ring 2, and at the same time preventing the adjusting ring 2 from accidentally dislodging from the adjusting groove 11.

[0044] In some embodiments, the groove 21 is provided at the middle of the radial direction of the axial sidewall of the adjusting ring 2, so that the inner peripheral end of the adjusting ring 2 forms an axially extending boss 24.

[0045] like Figure 2 and Figure 4 As shown, the left and right sidewalls of the adjusting ring 2 are both provided with grooves 21, and the inner circumferential end of the adjusting ring 2 (such as...) Figure 2 and Figure 4 The lower end of the adjusting ring 2 (shown) forms a boss 24 extending to the left from the left sidewall and a boss 24 extending to the right from the right sidewall. A groove 21 is formed between the boss 24 on the same side and the protrusion 22. The two bosses 24 ensure the axial length of the inner circumferential end of the adjusting ring 2, thereby ensuring the length of the wear-resistant coating 4 in the left-right direction. This ensures that the blade tip of the moving blade 5 wears against the wear-resistant coating 4 when the gas turbine vibrates, and avoids wear between the blade tip of the moving blade 5 and the cylinder 1 and the adjusting ring 2.

[0046] In some embodiments, the adjusting member 3 is connected between the outer peripheral wall 132 of the mounting ring 13 and the protrusion 22, and / or, the adjusting member 3 is connected between the bent portion 131 and the protrusion 22.

[0047] like Figure 2 and Figure 4 As shown, the adjusting member 3 preferably extends radially along the cylinder 1. The adjusting member 3 is connected between the outer peripheral wall 132 of the mounting ring 13 and the protrusion 22, and between the bent portion 131 and the protrusion 22, so that both the inner and outer peripheral ends of the protrusion 22 are connected to the adjusting member 3 and supported by the adjusting member 3. This ensures the stability of the adjusting ring 2 on the one hand, and avoids the adjusting member 3 from breaking due to stress concentration on the other hand.

[0048] It should be noted that the outer peripheral wall 132 of the mounting ring 13 surrounds the outer periphery of the adjusting groove 11 and forms the bottom surface of the adjusting groove 11.

[0049] It is understood that in other embodiments, the adjusting member 3 may be connected only between the outer peripheral wall 132 and the protrusion 22, or only between the bent portion 131 and the protrusion 22. The adjusting member 3 may also be connected between the outer peripheral wall 132 and the portion between the two protrusions 22 of the adjusting ring 2.

[0050] In some embodiments, the mounting ring 13 is provided with adjusting members 3 on both axial sides, and the adjusting members 3 are connected to the protrusion 22 located on the same side.

[0051] like Figure 2 and Figure 4 As shown, the mounting ring 13 is provided with adjusting parts 3 on both the left and right sides. The left adjusting part 3 is connected to the left protrusion 22, and the right adjusting part 3 is connected to the right protrusion 22 to ensure the stability of the adjusting ring 2 and prevent the adjusting ring 2 from tilting and causing damage to the tip of the moving blade 5.

[0052] This invention provides two examples of the regulating element 3, and proposes corresponding gas turbine examples based on the two examples of the regulating element 3.

[0053] The following is for reference. Figures 1-4 Two examples are described, one for the regulating component 3 and the other for the gas turbine. For example... Figure 1 and Figure 2 The image shows a first example of the regulating element 3 and the gas turbine, as shown. Figure 3 and Figure 4 The second example shown is of the regulating element 3 and the gas turbine.

[0054] In such Figure 1 and Figure 2 In the example shown, the adjusting member 3 is an adjusting screw 31 extending radially along the cylinder 1. The adjusting screw 31 is located on the mounting ring 13 and connected to the adjusting ring 2.

[0055] Specifically, such as Figure 1 and Figure 2 As shown, the adjusting member 3 is an adjusting screw 31 disposed radially on the mounting ring 13. The adjusting screw 31 is threadedly connected to the adjusting ring 2 so that the adjusting ring 2 can be moved radially toward the moving blade 5 of the cylinder 1 by rotating the adjusting screw 31.

[0056] The portion where the adjusting screw 31 connects to the mounting ring 13 may be threaded, so that the adjusting screw 31 and the mounting ring 13 are threadedly connected. When the adjusting screw 31 is rotated, the adjusting screw 31 will move radially relative to the mounting ring 13. When the adjusting screw 31 moves toward the adjusting groove 11, the outer wall of the mounting ring 13 needs to be provided with a relief groove surrounding the adjusting screw 31 so that the head of the adjusting screw 31 can move inward along the relief groove. When the adjusting screw 31 moves away from the adjusting groove 11, the adjusting screw 31 will protrude from the outer wall of the mounting ring 13, and the mounting groove 14 needs to have space to accommodate the protruding part of the adjusting screw 31.

[0057] The part where the adjusting screw 31 connects to the mounting ring 13 can also be a smooth rod section. When the adjusting screw 31 is rotated, the radial position of the adjusting screw 31 relative to the mounting ring 13 remains constant, and only the adjusting ring 2 is driven to move radially along the mounting ring 13.

[0058] In such Figure 1 and Figure 2 In the example shown, when it is necessary to adjust the position of the adjusting ring 2 and the wearable coating 4, the mounting ring 13 with the adjusting screw 31 and the adjusting ring 2 needs to be removed from the cylinder body 12, and then the adjusting screw 31 is rotated to adjust the radial position of the mounting ring 2 along the mounting ring 13, and then the mounting ring 13 with the adjusting screw 31 and the adjusting ring 2 is installed into the mounting groove 14 of the cylinder body 12.

[0059] In such Figure 1 and Figure 2 In the example shown, the adjusting screw 31 includes a first adjusting screw 311 and / or a second adjusting screw 312. The first adjusting screw 311 passes through the outer peripheral wall 132 of the mounting ring 13 and is connected to the protrusion 22 of the adjusting ring 2. The second adjusting screw 312 passes through the bent portion 131 of the mounting ring 13 and is connected to the protrusion 22 of the adjusting ring 2.

[0060] Specifically, such as Figure 1 and Figure 2 As shown, the adjusting screw 31 includes a first adjusting screw 311 and a second adjusting screw 312. The head to the rod of the first adjusting screw 311 is arranged along the outer circumference to the inner circumference of the mounting ring 13. The first adjusting screw 311 passes through the outer circumferential wall 132 of the mounting ring 13 and extends from the outer circumferential wall 132 to the inner circumference into the protrusion 22 on the same side. The first adjusting screw 311 is threadedly connected to the protrusion 22.

[0061] The head and rod of the second adjusting screw 312 are arranged along the inner and outer circumferences of the mounting ring 13. The second adjusting screw 312 passes through the bent portion 131 of the mounting ring 13 and extends from the bent portion 131 outward to the protrusion 22 on the same side. The second adjusting screw 312 is threadedly connected to the protrusion 22.

[0062] Preferably, each protrusion 22 is connected to a corresponding first adjusting screw 311 and second adjusting screw 312. The first adjusting screw 311 and second adjusting screw 312 on the same protrusion 22 are preferably, but not limited to, connected in the same threaded hole of the protrusion 22.

[0063] In such Figure 3 and Figure 4 In the example shown, the adjusting member 3 includes an electromagnetic coil 32, an adjusting rod 33, and an elastic member 34. The electromagnetic coil 32 is disposed on one of the outer peripheral wall 132 or the bent portion 131 of the mounting ring 13 and surrounds the outer periphery of one end of the adjusting rod 33. The electromagnetic coil 32 can drive the adjusting rod 33 to move radially along the cylinder 1. The other end of the adjusting rod 33 is connected to the protrusion 22 of the adjusting ring 2, thereby driving the adjusting ring 2 to move. The elastic member 34 is disposed between the other of the outer peripheral wall 132 or the bent portion 131 of the mounting ring 13 and the protrusion 22 of the adjusting ring 2.

[0064] Specifically, such as Figure 3 and Figure 4 As shown, the outer peripheral wall 132 of the mounting ring 13 is provided with an electromagnetic coil 32, which preferably, but is not limited to, passes through the outer peripheral wall 132. The axial direction of the electromagnetic coil 32 is set to the radial direction of the mounting ring 13.

[0065] The adjusting rod 33 is preferably, but not limited to, made of metal. The adjusting rod 33 is arranged radially along the mounting ring 13. The outer peripheral end of the adjusting rod 33 passes through the electromagnetic coil 32, and the inner peripheral end of the adjusting rod 33 is connected to the protrusion 22, preferably, but not limited to, being inserted into the protrusion 22.

[0066] An elastic element 34 is provided between the inner peripheral surface of the protrusion 22 and the bent portion 131. The elastic element 34 is preferably, but not limited to, located in the extension direction of the adjusting rod 33, and the elastic element 34 is preferably, but not limited to, a spring.

[0067] When the electromagnetic coil 32 is energized, it generates electromagnetic force to drive the adjusting rod 33 to move radially toward the moving blade 5 along the cylinder 1. The elastic force of the elastic element 34 acts on the protrusion 22, and the direction of the elastic force of the elastic element 34 on the protrusion 22 is opposite to the direction of the thrust of the adjusting rod 33. Thus, the position of the adjusting ring 2 is determined by the combined action of the elastic force of the elastic element 34 and the thrust of the adjusting rod 33. The thrust of the adjusting rod 33 increases with the increase of the current intensity of the electromagnetic coil 32. Therefore, the moving position of the adjusting ring 2 can be controlled by controlling the current intensity of the electromagnetic coil 32.

[0068] Preferably, each protrusion 22 is provided with a corresponding adjusting rod 33 and an elastic element 34.

[0069] In such Figure 3 and Figure 4In the example shown, when it is necessary to adjust the position of the adjusting ring 2, it is not necessary to remove the mounting ring 13, which has the adjusting element 3 and the adjusting ring 2, from the cylinder body 12. The position of the adjusting ring 2 can be adjusted by controlling the current intensity of the electromagnetic coil 32.

[0070] In such Figure 3 and Figure 4 In the example shown, the gas turbine with coating position adjustment function also includes an image acquisition device 6, a power supply, and a controller. The image acquisition device 6 is located on the inner circumferential surface of the cylinder 1 and is used to acquire images of the wearable coating 4 and the blade tip of the moving blade 5. The controller is connected to the image acquisition device 6 to receive the images and acquire the distance between the wearable coating 4 and the blade tip of the moving blade 5. The controller and the electromagnetic coil 32 are both connected to the power supply. The controller adjusts the current intensity supplied by the power supply to the electromagnetic coil 32 according to the distance.

[0071] Specifically, such as Figure 3 and Figure 4 As shown, the image acquisition device 6 is located on the inner circumferential surface of the cylinder body 12 and is used to acquire images of the wearable coating 4 and the blade tip of the moving blade 5. The image acquisition device 6 can directly acquire images or extract images from images.

[0072] The image acquisition device 6 is preferably, but not limited to, an endoscope, which penetrates the wall of the cylinder body 12. The lens of the endoscope is located on the inner circumferential surface of the cylinder body 12 and is positioned opposite to the gap between the wearable coating 4 and the blade tip of the moving blade 5 to acquire images of the wearable coating 4 and the blade tip of the moving blade 5.

[0073] The power supply and controller are preferably, but not limited to, located outside the cylinder 1. The controller is electrically connected to the image acquisition unit 6 to receive the image acquired and transmitted by the image acquisition unit 6. Based on the image, the controller can determine the distance between the wearable coating 4 and the blade tip of the moving blade 5, thereby determining whether the adjusting ring 2 needs to be moved.

[0074] The power supply unit is electrically connected to the electromagnetic coil 32 to supply power to the electromagnetic coil 32. The power supply unit is also electrically connected to the controller. When the adjusting ring 2 needs to move, the controller sends a signal to the power supply unit to increase the current intensity supplied by the power supply unit to the electromagnetic coil 32, thereby causing the electromagnetic coil 32 to drive the adjusting rod 33 to push the adjusting ring 2 to move. Therefore, as Figure 3 and Figure 4 The example shown can automatically adjust the position of the adjusting ring 2 and the wear-resistant coating 4.

[0075] In some embodiments, the adjusting ring 2 includes an arc segment and a seal. The arc segment is configured as a plurality of arc segments, which are arranged sequentially along the circumference of the adjusting ring 2. Each arc segment has an abrasive coating 4 on its inner circumferential surface. Each arc segment is connected to the adjusting member 3, and the seal is connected between adjacent arc segments.

[0076] Specifically, the adjusting ring 2 includes multiple arc-shaped segments and multiple seals. The arc-shaped segments are arcs extending circumferentially along the adjusting ring 2. Each arc-shaped segment is connected to an adjusting element 3 and has a wear-resistant coating 4. The multiple arc-shaped segments are arranged at intervals along the circumference of the adjusting ring 2. The seals are connected between adjacent arc-shaped segments. The seals can be elastically deformable rubber parts or multiple sealing sheets arranged side by side and abutting each other. The number of sealing sheets between adjacent arc-shaped segments is adjustable, so that the adjusting ring 2 can move radially along the cylinder 1. When the adjusting ring 2 moves toward the moving blade 5, the rubber parts that serve as seals are compressed, and at least some of the sealing sheets that serve as seals need to be removed.

[0077] Furthermore, the mounting ring 13 can also be configured as a multi-segment arc shape to facilitate removal from the mounting groove 14.

[0078] In some embodiments, the gas turbine with coating position adjustment function further includes an adhesive layer 7. The inner circumferential surface of the adjustment ring 2 is provided with a coating groove 23, and the bottom surface of the coating groove 23 is provided with an adhesive layer 7. The wearable coating 4 is bonded to the adhesive layer 7 and disposed in the coating groove 23.

[0079] like Figure 2 and Figure 4 As shown, the inner circumferential surface of the adjusting ring 2 is provided with a coating groove 23, which is arranged along the circumference of the adjusting ring 2. Preferably, the coating groove 23 extends through an arc-shaped section along the circumference of the adjusting ring 2. An adhesive layer 7 is provided on the bottom surface of the coating groove 23. The wear-resistant coating 4 is located in the coating groove 23 and connected to the adhesive layer 7, thereby bonding the adjusting ring 2 and the wear-resistant coating 4 together through the adhesive layer 7.

[0080] The adhesive layer 7 ensures the stability of the wearable coating 4 on the adjusting ring 2, preventing the wearable coating 4 from falling off. The coating groove 23 allows the wearable coating 4 to be set to a thicker thickness so that it can be worn for a longer period of time, thereby reducing the replacement frequency of the adjusting ring 2.

[0081] In some embodiments, such as Figure 1 and Figure 3 As shown, the inner circumferential surface of the cylinder body 12 is also provided with a stationary vane 8, and the adjusting ring 2 and the stationary vane 8 are arranged alternately along the axial direction of the cylinder 1.

[0082] In some embodiments, the inner circumferential surface of the cylinder body 12 is provided with an anti-water vapor oxidation coating to prevent corrosion by water vapor. Furthermore, the outer wall surface of the mounting ring 13 and the outer wall surface of the adjusting ring 2 without the wear-resistant coating 4 are also provided with an anti-water vapor oxidation coating.

[0083] In the description of this invention, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "left", "right", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are 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, and therefore should not be construed as a limitation of this invention.

[0084] Furthermore, the terms "first" and "second" are used only for distinction and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. 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.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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 gas turbine with coating position adjustment function, characterized in that, The device includes a cylinder (1), an adjusting ring (2), an adjusting member (3), and a wearable coating (4). The inner circumferential surface of the cylinder (1) is provided with an adjusting groove (11) extending circumferentially. The adjusting ring (2) extends circumferentially along the cylinder (1) and is at least partially disposed in the adjusting groove (11). The inner circumferential surface of the adjusting ring (2) is provided with the wearable coating (4). The wearable coating (4) is used to be disposed opposite to the moving blade (5). The adjusting member (3) is connected between the adjusting ring (2) and the cylinder (1) and is used to adjust the radial position of the adjusting ring (2) along the cylinder (1).

2. The gas turbine with coating position adjustment function according to claim 1, characterized in that, The cylinder (1) includes a cylinder body (12) and a mounting ring (13). The inner circumferential surface of the cylinder body (12) is provided with a mounting groove (14) extending in the circumferential direction. The mounting ring (13) is detachably disposed in the mounting groove (14). The inner circumferential surface of the mounting ring (13) is provided with the adjusting groove (11). The adjusting member (3) is connected between the adjusting ring (2) and the mounting ring (13) for adjusting the relative position of the adjusting ring (2) and the mounting ring (13) in the radial direction of the cylinder (1).

3. The gas turbine with coating position adjustment function according to claim 2, characterized in that, The axial sidewalls of the adjusting ring (2) are provided with grooves (21), and the outer peripheral end of the adjusting ring (2) forms an axially extending protrusion (22). The inner circumferential end of the mounting ring (13) is provided with a bend (131) that is relatively close to each other along the axial direction. A limiting groove (111) is formed between the bend (131) and the bottom surface of the adjusting groove (11). The bend (131) is provided in the groove (21) in a corresponding manner and can move radially along the cylinder (1) within the groove (21). The protrusion (22) is provided in the limiting groove (111) in a corresponding manner and can move radially along the cylinder (1) within the limiting groove (111).

4. The gas turbine with coating position adjustment function according to claim 3, characterized in that, The adjusting member (3) is connected between the outer peripheral wall (132) of the mounting ring (13) and the protrusion (22), and / or the adjusting member (3) is connected between the bent portion (131) and the protrusion (22).

5. The gas turbine with coating position adjustment function according to claim 3, characterized in that, The mounting ring (13) is provided with the adjusting member (3) on both axial sides, and the adjusting member (3) is connected to the protrusion (22) located on the same side.

6. The gas turbine with coating position adjustment function according to any one of claims 2-5, characterized in that, The adjusting member (3) is an adjusting screw (31) extending radially along the cylinder (1), the adjusting screw (31) is located on the mounting ring (13) and connected to the adjusting ring (2).

7. The gas turbine with coating position adjustment function according to claim 6, characterized in that, The adjusting screw (31) includes a first adjusting screw (311) and / or a second adjusting screw (312). The first adjusting screw (311) passes through the outer peripheral wall (132) of the mounting ring (13) and is connected to the protrusion (22) of the adjusting ring (2). The second adjusting screw (312) passes through the bent portion (131) of the mounting ring (13) and is connected to the protrusion (22) of the adjusting ring (2).

8. The gas turbine with coating position adjustment function according to any one of claims 2-5, characterized in that, The adjusting member (3) includes an electromagnetic coil (32), an adjusting rod (33), and an elastic member (34). The electromagnetic coil (32) is disposed on one of the outer peripheral wall (132) or the bent portion (131) of the mounting ring (13) and surrounds the outer periphery of one end of the adjusting rod (33). The electromagnetic coil (32) can drive the adjusting rod (33) to move radially along the cylinder (1). The other end of the adjusting rod (33) is connected to the protrusion (22) of the adjusting ring (2), thereby driving the adjusting ring (2) to move. The elastic member (34) is disposed between the other of the outer peripheral wall (132) or the bent portion (131) of the mounting ring (13) and the protrusion (22) of the adjusting ring (2).

9. The gas turbine with coating position adjustment function according to claim 8, characterized in that, It also includes an image acquisition device (6), a power supply and a controller. The image acquisition device (6) is located on the inner circumferential surface of the cylinder (1) and is used to acquire images of the wearable coating (4) and the blade tip of the moving blade (5). The controller is connected to the image acquisition device (6) to receive the image and acquire the distance between the wearable coating (4) and the blade tip of the moving blade (5). The controller and the electromagnetic coil (32) are both connected to the power supply. The controller adjusts the current intensity supplied by the power supply to the electromagnetic coil (32) according to the distance.

10. The gas turbine with coating position adjustment function according to claim 1, characterized in that, The adjusting ring (2) includes an arc segment and a sealing element. The arc segment is configured as a plurality of arc segments, which are arranged sequentially along the circumference of the adjusting ring (2). The inner circumferential surface of each arc segment is provided with the wear-resistant coating (4). Each arc segment is connected to the adjusting element (3). The sealing element is connected between adjacent arc segments.

11. The gas turbine with coating position adjustment function according to claim 1, characterized in that, It also includes an adhesive layer (7), the inner circumferential surface of the adjusting ring (2) is provided with a coating groove (23), the bottom surface of the coating groove (23) is provided with the adhesive layer (7), the wearable coating (4) is bonded to the adhesive layer (7) and is located in the coating groove (23).

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