Device and method for cleaning blade root groove of turbine wheel disc of gas turbine

Abstract

The invention relates to the technical field of cleaning equipment, in particular to a cleaning device and method for a blade root groove of a turbine wheel disc of a gas turbine. The cleaning device for the blade root groove of the turbine wheel disc of the gas turbine comprises a shell, and the shell is provided with a mounting face matched with the inner wall of the blade root groove of the wheel disc in shape. And the cleaning layer is arranged on the mounting surface and is used for wiping residues on the inner wall of the wheel disc blade root groove when the shell axially moves along the wheel disc blade root groove. And the water storage unit is arranged in the shell, fixedly connected with the shell and used for storing the cleaning fluid. The water distribution assembly comprises a plurality of water distribution pipes, one end of each water distribution pipe is communicated with the water outlet of the water storage unit, and the other end of each water distribution pipe is arranged in the cleaning layer. And the water pressing assembly comprises a piston, the piston is arranged in the water storage unit, and the piston is arranged to be capable of moving relative to the water storage unit so as to press the cleaning liquid into the cleaning layer through the water distribution pipe. According to the scheme, the wheel disc blade root groove crack detection efficiency and sensitivity can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of cleaning equipment, and in particular to a device and method for cleaning blade root grooves of a turbine wheel disc of a gas engine. Background Art

[0002] The blade root slot of the turbine disk is one of the important components of the gas turbine. Because it is subjected to the torque and centrifugal force of the turbine blades, as well as the harsh conditions of high-temperature gas erosion, its working environment is extremely harsh. Cracks are easily generated under the action of tensile stress and high temperature, and as the exposure time to high-temperature gas increases, the crack length may extend to a critical length, causing the blade to fall off and damage to the hot channel components. Therefore, effective non-destructive testing of the blade root slot of the turbine disk is an important means to ensure the safe and stable operation of the gas turbine.

[0003] At present, commonly used methods for detecting cracks in turbine blade root slots include array eddy current detection method and fluorescent penetrant detection method. When using these methods for detection, it is usually required that the surface of the blade root slot be kept clean to ensure the detection quality. In the prior art, the surface of the blade root slot is usually cleaned manually by the inspector, which not only affects the detection efficiency, but also easily leaves residues such as dirt and dust, thereby affecting the detection sensitivity. Summary of the invention

[0004] The embodiments of the present application at least provide a gas turbine impeller blade root groove cleaning device and method, which can improve the efficiency and sensitivity of impeller blade root groove crack detection.

[0005] In a first aspect, an embodiment of the present application provides a gas engine turbine wheel blade root groove cleaning device, comprising: A housing, wherein the housing has a mounting surface that matches the shape of the inner wall of the wheel blade root groove; A cleaning layer, the cleaning layer being arranged on the mounting surface and used for erasing residues on the inner wall of the wheel blade root groove when the housing moves axially along the wheel blade root groove; A water storage unit, which is disposed inside the shell and fixedly connected to the shell and is used to store cleaning liquid; A water distribution assembly, the water distribution assembly comprising a plurality of water distribution pipes, one end of the plurality of water distribution pipes being connected to the water outlet of the water storage unit, and the other end of the plurality of water distribution pipes being arranged in the cleaning layer; A water pressure component includes a piston, the piston is arranged in the water storage unit, and the piston is arranged to be movable relative to the water storage unit to press the cleaning liquid into the cleaning layer through the water distribution pipe.

[0006] In an optional embodiment, the shell is a U-shaped structure, and the opening size of the shell is adjustable.

[0007] In an optional implementation, it also includes: A mounting seat, wherein the mounting seat is arranged at the opening of the shell, wherein one of the mounting seat and the shell is provided with a guide rail, and the other is provided with a slider matched with the guide rail, wherein the guide rail and the slider are configured to allow the two side walls of the shell to slide relative to the mounting seat so as to adjust the opening size of the shell.

[0008] In an optional embodiment, the shell is configured to be able to shrink along a first direction to squeeze out the cleaning liquid in the cleaning layer, and the first direction is consistent with the depth direction of the wheel disk blade root groove.

[0009] In an optional implementation, it also includes: The driving assembly includes a telescopic rod and a controller, wherein the telescopic rod is arranged in the shell, and the axial ends of the telescopic rod are respectively connected to the two ends of the shell in the telescopic direction, and the controller is configured to control the axial telescopic extension of the telescopic rod according to an operating instruction.

[0010] In an optional embodiment, one end of the telescopic rod is connected to the piston, and the direction in which the piston moves relative to the water storage unit is consistent with the telescopic direction of the telescopic rod.

[0011] In an optional embodiment, the water storage unit includes an inner cylinder and an outer cylinder, the inner cylinder is arranged in the outer cylinder and fixedly connected to the outer cylinder, the inner cylinder and the outer cylinder are communicated, the piston is arranged in the inner cylinder, and the multiple water distribution pipes are communicated with the outer cylinder.

[0012] In an optional implementation, it also includes: The magnetic attraction layer is arranged between the shell and the cleaning layer, and is used for adsorbing the inner wall of the wheel disc blade root groove when the shell is located in the wheel disc blade root groove, so that the cleaning layer is tightly fitted with the inner wall of the wheel disc blade root groove.

[0013] In an optional implementation, it also includes: A water replenishment pipe, one end of which is connected to the water inlet of the water storage unit, and the other end of which is passed through the outside of the shell and is used to connect to the cleaning liquid supply device to replenish the cleaning liquid into the water storage unit.

[0014] In a second aspect, an embodiment of the present application further provides a method for cleaning a blade root groove of a wheel disc, which is applicable to the cleaning device for cleaning a blade root groove of a turbine wheel disc of a gas engine as described in any embodiment of the first aspect, and the method comprises: S1, installing the gas engine turbine wheel blade root groove cleaning device from the air inlet side of the wheel blade root groove, and making the cleaning layer of the gas engine turbine wheel blade root groove cleaning device fit with the inner wall of the wheel blade root groove; S2, moving the gas engine turbine wheel blade root groove cleaning device from the air inlet side of the wheel blade root groove to the air outlet side; S3, repeating steps S1-S2, and in the process of moving the gas engine turbine wheel blade root groove cleaning device, using a water pressure assembly to continuously pressurize the cleaning pressure in the water storage unit into the cleaning layer; S4, repeat step S3 until the cleaning of the wheel blade root groove is completed.

[0015] In an optional embodiment, before step S4, the housing of the combustion engine turbine wheel blade root groove cleaning device is contracted along a first direction to squeeze out the cleaning liquid in the cleaning layer.

[0016] The above technical solution of the present application has the following beneficial technical effects: The gas turbine impeller blade root groove cleaning device of the embodiment of the present application can be installed into the impeller blade root groove from one end of the impeller blade root groove. When the gas turbine impeller blade root groove cleaning device moves in the impeller blade root groove, the cleaning layer on its mounting surface can clean the residue on the inner wall of the impeller blade root groove. Moreover, during the cleaning process, cleaning liquid can be pressed into the cleaning layer through the water storage unit, the water distribution assembly and the water pressure assembly. Compared with the manual cleaning method of the impeller blade root groove surface, the gas turbine impeller blade root groove cleaning device can improve the cleaning efficiency and quality, thereby improving the efficiency and sensitivity of the impeller blade root groove crack detection.

[0017] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. The drawings herein are incorporated into the specification and constitute a part of the specification. These drawings illustrate embodiments consistent with the present application and are used together with the specification to illustrate the technical solutions of the present application. It should be understood that the following drawings only illustrate certain embodiments of the present application and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can also be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic structural diagram of a combustion engine turbine wheel blade root groove cleaning device provided by an embodiment of the present application from a first perspective is shown; Figure 2A schematic structural diagram of a second viewing angle of a combustion engine turbine wheel blade root groove cleaning device provided in an embodiment of the present application is shown; Figure 3 A top view of a combustion engine turbine wheel blade root groove cleaning device provided in an embodiment of the present application is shown; Reference numerals: 1. Shell; 2. Cleaning layer; 3. Inner tube; 4. Outer tube; 5. Water distribution pipe; 6. Piston; 7. Piston rod; 8. Mounting seat; 9. Slider; 10. Telescopic rod; 11. Controller; 12. Control button; 13. Magnetic layer; 14. Water supply pipe; 15. Cleaning liquid supply device; 16. Connecting rod. DETAILED DESCRIPTION

[0020] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of this specification should be understood by people with ordinary skills in the field to which this application belongs. The "first", "second" and similar words used in one or more embodiments of this specification do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] The blade root slot of the turbine disk is one of the important components of the gas turbine. Because it is subjected to the torque and centrifugal force of the turbine blades, as well as the harsh conditions of high-temperature gas erosion, its working environment is extremely harsh. Cracks are easily generated under the action of tensile stress and high temperature, and as the exposure time to high-temperature gas increases, the crack length may extend to a critical length, causing the blade to fall off and damage to the hot channel components. Therefore, effective non-destructive testing of the blade root slot of the turbine disk is an important means to ensure the safe and stable operation of the gas turbine.

[0022] At present, commonly used methods for detecting cracks in turbine blade root slots include array eddy current detection method and fluorescent penetrant detection method. When using these methods for detection, it is usually required that the surface of the blade root slot be kept clean to ensure the detection quality. In the prior art, the surface of the blade root slot is usually cleaned manually by the inspector, which not only affects the detection efficiency, but also easily leaves residues such as dirt and dust, thereby affecting the detection sensitivity.

[0023] To this end, an embodiment of the present application provides a gas turbine impeller blade root groove cleaning device and method to improve the efficiency and sensitivity of impeller blade root groove crack detection.

[0024] In order to make the objectives, technical solutions and advantages of the present application more clear, they are described in detail below with reference to specific drawings and embodiments.

[0025] refer to Figure 1 The gas turbine impeller blade root groove cleaning device provided in the embodiment of the present application includes: a shell 1, a cleaning layer 2, a water storage unit, a water distribution assembly and a water pressure assembly. The shell 1 has a mounting surface that matches the shape of the inner wall of the impeller blade root groove. The cleaning layer 2 is arranged on the mounting surface, and is used to wipe off the residue on the inner wall of the impeller blade root groove when the shell 1 moves axially along the impeller blade root groove. The water storage unit is arranged inside the shell 1 and fixedly connected to the shell 1, and is used to store cleaning fluid. The water distribution assembly includes a plurality of water distribution pipes 5, one end of the plurality of water distribution pipes 5 is connected to the water outlet of the water storage unit, and the other end is arranged in the cleaning layer 2. The water pressure assembly includes a piston 6, the piston 6 is arranged in the water storage unit, and the piston 6 is arranged to be able to move relative to the water storage unit to press the cleaning fluid into the cleaning layer 2 through the water distribution pipe 5.

[0026] In this embodiment, the material of the shell 1 can be rubber, plastic or plastic. The mounting surface of the shell 1 can be a continuous wave surface that matches the inner wall of the wheel blade root groove. It should be understood that in the specific setting, the cross-sectional size of the shell 1 should be slightly smaller than the cross-sectional size of the wheel blade root groove to facilitate the installation of the cleaning layer 2. In addition, the shell 1 should have a certain strength, so that the shell 1 can be prevented from being deformed when moving, thereby affecting the wiping effect of the cleaning layer 2.

[0027] In this embodiment, the cleaning layer 2 can be made of flannel, cotton cloth, etc. It should be understood that in a specific configuration, the cleaning layer 2 is detachably connected to the mounting surface, so that it is easy to replace the cleaning layer 2. In addition, the cleaning layer 2 should have a certain degree of fluffiness, and the thickness of the cleaning layer 2 should not be less than the gap between the mounting surface and the inner wall of the wheel blade root groove, so that the cleaning quality can be avoided from being affected by the gap between the cleaning layer 2 and the inner wall of the wheel blade root groove.

[0028] In this embodiment, the water storage unit can be a cylindrical structure, the inner cavity of the cylindrical structure is used to store cleaning liquid, and the inner cavity of the cylindrical structure is sealed with the piston 6 and allows the piston 6 to slide along the axial direction of the cylindrical structure. In a specific setting, the bottom of the water storage unit is connected to the bottom of the housing 1 through a connecting rod 16.

[0029] In this embodiment, the water distribution pipe 5 can be a hose, which can facilitate the connection and installation of the water distribution pipe 5. It should be understood that in the specific setting, the end of each water distribution pipe 5 away from the water storage unit can be set at a different position of the cleaning layer 2, and the end of the water distribution pipe 5 away from the water storage unit can be fixed on the housing 1, so that the step of disconnecting the water distribution pipe 5 and the cleaning layer 2 can be saved when the cleaning layer 2 is replaced.

[0030] In this embodiment, the water pressure assembly may further include a piston rod 7, one end of which is connected to the piston 6 and extends out of the water storage unit. In a specific configuration, the piston 6 may be moved relative to the water storage unit by applying a thrust / pull force to the piston rod 7.

[0031] During use, the turbine wheel blade root groove cleaning device can be installed into the wheel blade root groove from one end of the wheel blade root groove. When the turbine wheel blade root groove cleaning device moves in the wheel blade root groove, the cleaning layer 2 on its installation surface can clean the residue on the inner wall of the wheel blade root groove. In addition, during the cleaning process, cleaning liquid can be pressed into the cleaning layer 2 through the water storage unit, the water distribution assembly and the water pressure assembly. Compared with the manual cleaning method of the wheel blade root groove surface, the turbine wheel blade root groove cleaning device can improve the cleaning efficiency and quality, thereby improving the efficiency and sensitivity of the wheel blade root groove crack detection.

[0032] Optionally, in the embodiment of the present application, the shell 1 is a U-shaped structure, and the opening size of the shell 1 is adjustable.

[0033] In this embodiment, since the opening size of the shell 1 is adjustable, the shell 1 can adjust the opening size according to the groove width of the impeller blade root groove, so that the gas turbine impeller blade root groove cleaning device can be suitable for cleaning impeller blade root grooves with different groove widths.

[0034] Optionally, in an embodiment of the present application, the gas engine turbine impeller blade root groove cleaning device may further include a mounting seat 8, which is arranged at the opening of the shell 1, and one of the mounting seat 8 and the shell 1 is provided with a guide rail, and the other is provided with a slider 9 that cooperates with the guide rail, and the guide rail and the slider 9 are configured to allow the two side walls of the shell 1 to slide relative to the mounting seat 8 to adjust the opening size of the shell 1.

[0035] In this embodiment, the mounting seat 8 can be connected to the housing 1 through the guide rail and the slider 9. For example, in a specific configuration, the slider 9 can be a T-shaped slider, and correspondingly, the guide rail can be a concave guide rail that matches the T-shaped slider, so that the mounting seat 8 and the housing 1 can be connected through the concave guide rail and the T-shaped slider. In addition, when the side wall of the housing 1 is subjected to an external force, the T-shaped slider can slide in the concave guide rail, thereby adjusting the opening size of the housing 1.

[0036] In this embodiment, the mounting seat 8 can also serve as a force-bearing part of the cleaning device for the blade root groove of the gas turbine wheel disc, and is used to transmit thrust / pulling force to the housing 1 so that the housing 1 moves axially along the blade root groove of the wheel disc. In specific settings, the mounting seat 8 can be located outside the blade root groove of the wheel disc during use, so that it is convenient for operators to operate.

[0037] Optionally, in the embodiment of the present application, the housing 1 is configured to be able to shrink to squeeze out the cleaning liquid in the cleaning layer 2 .

[0038] In this embodiment, the contraction direction of the housing 1 is the first direction, which is consistent with the depth direction of the blade root groove of the wheel disc. Figure 1 As shown, the depth direction of the wheel blade root groove is consistent with the height direction of the housing 1.

[0039] In this embodiment, the shell 1 can be made to have the ability to shrink by weakening the turning positions on both sides thereof. In this way, the shell 1 can be limited by the inner wall surface of the wheel blade root groove when it is in the wheel blade root groove, preventing it from shrinking when the wheel blade root groove moves axially, and squeezing the cleaning liquid containing impurities into the wheel blade root groove.

[0040] During use, the gas turbine wheel blade root groove cleaning device can be intermittently removed from the wheel blade root groove and the contaminated cleaning liquid in the cleaning layer 2 can be squeezed out, thereby improving the cleaning efficiency and quality of the gas turbine wheel blade root groove cleaning device.

[0041] Optionally, in the embodiment of the present application, the gas engine turbine wheel blade root groove cleaning device may further include a driving component, and the driving component is used to drive the shell 1 to extend and retract.

[0042] In this embodiment, the driving assembly may include a telescopic rod 10 and a controller 11. The telescopic rod 10 is disposed in the housing 1. The axial ends of the telescopic rod 10 are respectively connected to the two ends of the housing 1 in the telescopic direction. The controller 11 is configured to control the axial telescopic movement of the telescopic rod 10 according to an operation instruction. Specifically, Figure 1 As shown, the axial direction of the telescopic rod 10 is consistent with the height direction of the housing 1, the upper end of the telescopic rod 10 is connected to the upper end of the housing 1, and the lower end of the telescopic rod 10 is connected to the lower end of the housing 1. When the telescopic rod 10 is axially contracted, the lower end of the telescopic rod 10 drives the lower end of the housing 1 to move upward, thereby achieving the contraction of the housing 1. When the telescopic rod 10 is axially extended, the lower end of the telescopic rod 10 drives the lower end of the housing 1 to move downward, thereby restoring the housing 1 to its original state.

[0043] In this embodiment, the controller 11 may be disposed in the housing 1 and fixedly connected to the housing 1, and the controller 11 may be provided with a control button 12, which is disposed on the mounting seat 8 and is used to control the extension and retraction of the telescopic rod 10. Figure 3 As shown, the control button 12 is set on the mounting seat 8, and the control button 12 includes a first button and a second button. When the operator operates the first button, the controller 11 can control the telescopic rod 10 to axially contract. When the operator operates the second button, the controller 11 can control the telescopic rod 10 to axially extend.

[0044] In some embodiments, one end of the telescopic rod 10 can be connected to the piston 6 (piston rod 7), and the direction in which the piston 6 moves relative to the water storage unit is consistent with the telescopic direction of the telescopic rod 10. In other words, one end of the telescopic rod 10 is connected to the housing 1 through the water pressure assembly and the water storage unit. In this way, the piston 6 can be driven to move relative to the water storage unit by axially extending the telescopic rod 10, so as to press the cleaning liquid in the water storage unit into the cleaning layer 2. In other words, the housing 1 and the water pressure assembly can share a driving member. In this way, the number of driving members used can be reduced, which is conducive to reducing costs.

[0045] It should be understood that in a specific implementation, the action of pressing the cleaning fluid into the cleaning layer 2 can be performed during the process of moving the housing 1 for cleaning. At this time, the housing 1 is located in the wheel blade root groove, and the bottom surface of the wheel blade root groove can support the housing 1 to prevent the housing 1 from expanding and contracting during the cleaning process, thereby affecting the cleaning quality.

[0046] Optionally, in an embodiment of the present application, the water storage unit may include an inner cylinder 3 and an outer cylinder 4, the inner cylinder 3 is arranged in the outer cylinder 4 and fixedly connected to the outer cylinder 4, the inner cylinder 3 and the outer cylinder 4 are connected, the piston 6 is arranged in the inner cylinder 3, and a plurality of water distribution pipes 5 are connected to the outer cylinder 4.

[0047] In this embodiment, since the water distribution pipe 5 is connected to the outer cylinder 4, that is, the water outlet of the water storage unit is arranged on the outer cylinder 4, the water outlet of the water storage unit can be dispersedly arranged, so that the water distribution pipe 5 can be connected to different positions of the outer cylinder 4. Compared with the method of using a single water cylinder, this can reduce the length of the water distribution pipe 5 and reduce the risk of the water distribution pipe 5 being entangled when the shell 1 shrinks.

[0048] Optionally, in an embodiment of the present application, the gas engine turbine impeller blade root groove cleaning device may further include a magnetic attraction layer 13, which is arranged between the shell 1 and the cleaning layer 2, and is used to adsorb the inner wall of the impeller blade root groove when the shell 1 is located in the impeller blade root groove, so that the cleaning layer 2 is tightly fitted to the inner wall of the impeller blade root groove.

[0049] In this embodiment, the magnetic attraction layer 13 can be a sheet-shaped flexible magnet. By setting the magnetic attraction layer 13, there is a magnetic attraction force between the gas engine turbine wheel blade root groove cleaning device and the inner wall of the wheel blade root groove. The magnetic attraction force can play a role in positioning the gas engine turbine wheel blade root groove cleaning device.

[0050] In this embodiment, the magnetic attraction layer 13 can be arranged on the side of the cleaning layer 2 facing the shell 1, and the magnetic attraction layer 13 and the shell 1 can be unconnected to each other. This arrangement allows the cleaning layer 2 to cling to the inner wall of the wheel blade root groove under the action of the magnetic attraction force, which is beneficial to improving the cleaning quality.

[0051] In other possible implementations, the magnetic attraction layer 13 may be disposed on the mounting surface of the housing 1 , so that the housing 1 can adjust the opening size under the action of the magnetic attraction force.

[0052] Optionally, in an embodiment of the present application, the gas engine turbine impeller blade root groove cleaning device may further include a water supply pipe 14, one end of which is connected to the water inlet of the water storage unit, and the other end is passed through the outside of the shell 1, for connecting to the cleaning liquid supply device 15 to replenish the cleaning liquid into the water storage unit.

[0053] In this embodiment, one end of the water supply pipe 14 is connected to the water inlet of the water storage unit (inner cylinder 3), and the other end passes through the shell 1 to be exposed outside the shell 1. In specific use, the water supply pipe 14 can be connected to the cleaning liquid supply device 15, so that the cleaning liquid supply device 15 can replenish the cleaning liquid into the water storage unit. It should be understood that in specific settings, the end of the water supply pipe 14 exposed outside the shell 1 can be provided with a quick-connect male connector / quick-connect female connector to facilitate the connection of the water supply pipe 14 to the cleaning liquid supply device 15.

[0054] An embodiment of the present application also provides a method for cleaning the blade root groove of a wheel disc, which is applicable to the cleaning device for cleaning the blade root groove of a turbine wheel disc of a gas engine in the aforementioned embodiment.

[0055] In this embodiment, the method for cleaning the root groove of a wheel disc includes the following steps: S1, inserting the gas turbine wheel blade root groove cleaning device into the wheel blade root groove from the air inlet side, and making the cleaning layer 2 of the gas turbine wheel blade root groove cleaning device fit with the inner wall of the wheel blade root groove; S2, moving the gas engine turbine wheel blade root groove cleaning device from the air inlet side of the wheel blade root groove to the air outlet side; S3, repeating steps S1-S2, and using the water pressure assembly to continuously pressurize the cleaning pressure in the water storage unit into the cleaning layer 2 during the process of moving the gas turbine wheel blade root groove cleaning device; S4, repeat step S3 until the cleaning of the wheel blade root groove is completed.

[0056] According to the above method, the gas turbine wheel blade root groove cleaning device can be installed into the wheel blade root groove from one end of the wheel blade root groove. When the gas turbine wheel blade root groove cleaning device moves in the wheel blade root groove, the cleaning layer 2 on its installation surface can clean the residue on the inner wall of the wheel blade root groove. In addition, during the cleaning process, the cleaning liquid can be pressed into the cleaning layer 2 through the water storage unit, the water distribution assembly and the water pressure assembly. Compared with the manual cleaning method of the wheel blade root groove surface, the gas turbine wheel blade root groove cleaning device can improve the cleaning efficiency and quality, thereby improving the efficiency and sensitivity of the wheel blade root groove crack detection.

[0057] In this embodiment, before step S4 , the housing of the combustion engine turbine wheel blade root groove cleaning device is contracted along a first direction to squeeze out the cleaning liquid in the cleaning layer 2 .

[0058] Specifically, during use, the gas turbine impeller blade root groove cleaning device can be intermittently removed from the impeller blade root groove and the contaminated cleaning liquid in the cleaning layer 2 can be squeezed out, thereby improving the cleaning efficiency and quality of the gas turbine impeller blade root groove cleaning device.

[0059] One or more embodiments of this specification are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this specification should be included in the scope of protection of this application.

[0060] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A gas turbine wheel blade root groove cleaning device, characterized in that: include: A housing, wherein the housing has a mounting surface that matches the shape of the inner wall of the wheel blade root groove; A cleaning layer, the cleaning layer being arranged on the mounting surface and used for erasing residues on the inner wall of the wheel blade root groove when the housing moves axially along the wheel blade root groove; A water storage unit, which is disposed inside the shell and fixedly connected to the shell and is used to store cleaning liquid; A water distribution assembly, the water distribution assembly comprising a plurality of water distribution pipes, one end of the plurality of water distribution pipes being connected to the water outlet of the water storage unit, and the other end of the plurality of water distribution pipes being arranged in the cleaning layer; A water pressure component includes a piston, the piston is arranged in the water storage unit, and the piston is arranged to be movable relative to the water storage unit to press the cleaning liquid into the cleaning layer through the water distribution pipe.

2. The gas engine turbine wheel blade root groove cleaning device according to claim 1, characterized in that: The shell is a U-shaped structure, and the opening size of the shell is adjustable.

3. The gas engine turbine wheel blade root groove cleaning device according to claim 2, characterized in that: Also includes: A mounting seat, wherein the mounting seat is arranged at the opening of the shell, wherein one of the mounting seat and the shell is provided with a guide rail, and the other is provided with a slider matched with the guide rail, wherein the guide rail and the slider are configured to allow the two side walls of the shell to slide relative to the mounting seat so as to adjust the opening size of the shell.

4. The gas engine turbine wheel blade root groove cleaning device according to claim 1, characterized in that: The housing is configured to be able to shrink along a first direction to squeeze out the cleaning liquid in the cleaning layer, and the first direction is consistent with a depth direction of the wheel disk blade root groove.

5. The gas engine turbine wheel blade root groove cleaning device according to claim 4, characterized in that: Also includes: The driving assembly includes a telescopic rod and a controller, wherein the telescopic rod is arranged in the shell, and the axial ends of the telescopic rod are respectively connected to the two ends of the shell in the telescopic direction, and the controller is configured to control the axial telescopic extension of the telescopic rod according to an operating instruction.

6. The gas engine turbine blade root groove cleaning device according to claim 5, characterized in that: One end of the telescopic rod is connected to the piston, and the direction in which the piston moves relative to the water storage unit is consistent with the telescopic direction of the telescopic rod.

7. The gas engine turbine blade root groove cleaning device according to claim 4, characterized in that: The water storage unit includes an inner cylinder and an outer cylinder, the inner cylinder is arranged in the outer cylinder and fixedly connected to the outer cylinder, the inner cylinder and the outer cylinder are communicated, the piston is arranged in the inner cylinder, and the multiple water distribution pipes are communicated with the outer cylinder.

8. The gas engine turbine wheel blade root groove cleaning device according to claim 1, characterized in that: Also includes: The magnetic attraction layer is arranged between the shell and the cleaning layer, and is used for adsorbing the inner wall of the wheel disc blade root groove when the shell is located in the wheel disc blade root groove, so that the cleaning layer is tightly fitted with the inner wall of the wheel disc blade root groove.

9. The gas engine turbine wheel blade root groove cleaning device according to claim 1, characterized in that: Also includes: A water replenishment pipe, one end of which is connected to the water inlet of the water storage unit, and the other end of which is passed through the outside of the shell and is used to connect to the cleaning liquid supply device to replenish the cleaning liquid into the water storage unit.

10. A method for cleaning blade root grooves of a wheel disc, applicable to the cleaning device for blade root grooves of a gas turbine wheel disc according to any one of claims 1 to 9, characterized in that: The method comprises: S1, installing the gas engine turbine wheel blade root groove cleaning device from the air inlet side of the wheel blade root groove, and making the cleaning layer of the gas engine turbine wheel blade root groove cleaning device fit with the inner wall of the wheel blade root groove; S2, moving the gas engine turbine wheel blade root groove cleaning device from the air inlet side of the wheel blade root groove to the air outlet side; S3, repeating steps S1-S2, and in the process of moving the gas engine turbine wheel blade root groove cleaning device, using a water pressure assembly to continuously pressurize the cleaning pressure in the water storage unit into the cleaning layer; S4, repeat step S3 until the cleaning of the wheel blade root groove is completed.

11. The method according to claim 10, characterized in that Before step S4, the housing of the combustion engine turbine wheel blade root groove cleaning device is contracted along a first direction to squeeze out the cleaning liquid in the cleaning layer.

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