Turbine blade polishing equipment

Abstract

The embodiment of the invention provides steam turbine blade grinding equipment which comprises a machine body, a grinding device and a grinding device. The working table covers a notch of the dust collection groove, the working table is provided with a blade grinding area, and the blade grinding area of the working table is provided with a dust removal hole communicated to the dust collection groove; the grinding device is arranged at the end, away from the machine body, of the workbench, the grinding device and the blade grinding area are correspondingly arranged, and the grinding device is used for grinding the blade placed in the blade grinding area; and the negative pressure device is arranged in the dust collection groove, and the negative pressure device is used for generating negative pressure in the dust collection groove, so that dust and material slag generated in the blade grinding area are sucked into the dust removal groove through the dust removal holes. According to the polishing device, the negative pressure device generates negative pressure in the dust collection groove, dust and material residues generated in the polishing process on the workbench are sucked into the dust removal groove through the dust removal holes, and therefore cleaning of the workbench is achieved, and the environmental protection problem of polishing operation can be solved.

Description

Technical Field

[0001] The embodiments of the present disclosure belong to the technical field of steam turbine blade production, and specifically relate to a steam turbine blade grinding device. Background Art

[0002] A steam turbine, also known as a steam turbine engine, is a rotary steam power device. High-temperature and high-pressure steam passes through a fixed nozzle and becomes an accelerated airflow, which is then sprayed onto the blades, causing the rotor with the blades to rotate and perform work externally. Steam turbines are the main equipment in modern thermal power plants and are also used in the metallurgical industry, chemical industry, and ship power devices.

[0003] Usually, a grinding device is used to grind the turbine blades. However, when the existing grinding device is used to grind the turbine blades, dust will be splashed, which is not environmentally friendly.

[0004] Therefore, how to solve the above problems has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] The embodiments of the present disclosure aim to solve at least one of the technical problems existing in the prior art and provide a turbine blade grinding device.

[0006] One aspect of an embodiment of the present disclosure provides a steam turbine blade grinding device, comprising: a body having a dust collecting tank;

[0007] A workbench, which is covered on the notch of the dust collecting tank, wherein the workbench has a blade grinding area, and the blade grinding area of ​​the workbench is provided with a dust removal hole connected to the dust collecting tank;

[0008] A grinding device is arranged at one end of the workbench away from the machine body, the grinding device is arranged corresponding to the blade grinding area, and the grinding device is used to grind the blades placed in the blade grinding area;

[0009] A negative pressure device is arranged in the dust collecting groove, and is used to generate negative pressure in the dust collecting groove, so that the dust and slag generated in the blade grinding area are sucked into the dust collecting groove through the dust removal hole.

[0010] Optionally, there are a plurality of dust removal holes, and the plurality of dust removal holes are arranged in an array in the blade grinding area.

[0011] Furthermore, it also includes: a protective cover, which is arranged at one end of the workbench away from the machine body; wherein the protective cover is arranged around the blade grinding area.

[0012] Furthermore, it also includes: two limiting devices arranged at a relative interval on the inner wall of the protective cover, wherein the two limiting devices are used to limit the position of the blade placed in the blade grinding area.

[0013] Optionally, the limiting device includes a hydraulic cylinder, a return spring and a limit plate; the hydraulic cylinder is arranged on the inner peripheral wall of the protective cover, one end of the return spring is connected to the piston rod of the hydraulic cylinder, and the other end is connected to the limit plate;

[0014] The hydraulic cylinders of the two limiting devices respectively drive the limiting plates to abut against the blades placed in the blade grinding area through the return springs to limit the position of the blades.

[0015] Optionally, the grinding device includes a bracket, a first telescopic rod and a grinding disc, the first telescopic rod is slidably connected to the bracket, the grinding disc is arranged on the first telescopic rod, and the grinding disc is used to grind the blades placed in the blade grinding area.

[0016] Optionally, the support comprises a column and a support frame; one end of the column is connected to the workbench, and the other end is connected to the support frame; a slide groove is provided on the support frame;

[0017] The grinding device also includes a sliding block slidably connected to the sliding groove, and the sliding block is connected to the first telescopic rod.

[0018] Furthermore, it also includes: a cleaning device, which is arranged on the bracket, and the bracket is used to clean the dust and residue on the surface of the workbench.

[0019] Optionally, the cleaning device includes a second telescopic rod, a movable shaft, a connecting rod and a brush, wherein one end of the second telescopic rod is connected to the bracket, and the other end is rotatably connected to the movable shaft; one end of the connecting rod is connected to the movable shaft, and the other end is connected to the brush.

[0020] The beneficial effects of the embodiments of the present disclosure include:

[0021] In the present disclosure, the negative pressure device generates negative pressure in the dust collecting tank, and the dust and slag generated during the grinding process on the workbench are sucked into the dust collecting tank through the dust removal hole, thereby cleaning the workbench and solving the environmental protection problem of the grinding operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a steam turbine blade grinding device according to an embodiment of the present disclosure;

[0023] Figure 2 It is a side structural schematic diagram of a steam turbine blade grinding device according to an embodiment of the present disclosure;

[0024] Figure 3 for Figure 2 Schematic diagram of the enlarged structure at point A.

[0025] In the figure, 1. machine body; 2. workbench; 3. protective cover; 4. turbine blade; 5. column; 6. support frame; 7. slide groove; 8. sliding block; 9. first telescopic rod; 10. driving motor; 11. grinding disc; 12. dust removal hole; 13. shock-absorbing layer; 14. dust collecting trough; 15. suction fan; 16. hydraulic cylinder; 17. reset spring; 18. limit plate; 19. fixed rod; 20. second telescopic rod; 21. movable shaft; 22. connecting rod; 23. brush; 24. screw. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present disclosure, the present disclosure is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] The following is a further detailed description of the implementation methods of the present application in conjunction with the accompanying drawings and examples. The detailed descriptions and drawings of the following examples are used to illustrate the principles of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments. In the description of the present application, it should be noted that, unless otherwise specified, the meaning of "multiple" is more than two; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inside", "outside", etc. is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not vertical in the strict sense, but within the error tolerance range. "Parallel" is not parallel in the strict sense, but within the error tolerance range.

[0028] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0029] like Figure 1-3As shown, a turbine blade grinding device includes a body 1, a workbench 2, a grinding device and a negative pressure device. The body 1 has a dust collecting groove 14. The workbench 2 is covered in the notch of the dust collecting groove 14, the workbench 2 has a blade grinding area, and the blade grinding area of ​​the workbench 2 is provided with a dust removal hole 12 connected to the dust collecting groove 14.

[0030] The grinding device is arranged at one end of the workbench 2 away from the machine body 1, and the grinding device is arranged corresponding to the blade grinding area. The grinding device is used to grind the blade placed in the blade grinding area. The negative pressure device is arranged in the dust collecting tank 14, and the negative pressure device is used to generate negative pressure in the dust collecting tank 14, so that the dust and slag generated in the blade grinding area are sucked into the dust collecting tank through the dust removal hole 12.

[0031] In the present disclosure, the negative pressure device generates negative pressure in the dust collecting tank 14, and the dust and slag generated during the grinding process on the workbench 2 are sucked into the dust collecting tank through the dust removal holes 12, thereby cleaning the workbench 2 and solving the environmental protection problem of the grinding operation.

[0032] In some embodiments, the negative pressure device is a suction fan 15 .

[0033] In some embodiments, there are multiple dust removal holes 12, and the multiple dust removal holes 12 are arranged in an array in the blade grinding area.

[0034] In some embodiments, the grinding device further includes a protective cover 3, which is disposed at one end of the workbench 2 away from the machine body 1, wherein the protective cover 3 surrounds the blade grinding area.

[0035] In some embodiments, the grinding device further includes two limiting devices which are relatively spaced apart and arranged on the inner peripheral wall of the protective cover 3, wherein the two limiting devices are used to limit the position of the blade placed in the blade grinding area.

[0036] In some embodiments, the limiting device includes a hydraulic cylinder 16, a return spring 17 and a limit plate 18, the hydraulic cylinder 16 is arranged on the inner wall of the protective cover 3, one end of the return spring 17 is connected to the piston rod of the hydraulic cylinder 16, and the other end is connected to the limit plate 18, wherein the hydraulic cylinders 16 of the two limiting devices respectively drive the limit plate 18 to abut against the blade placed in the blade grinding area through the return spring 17 to limit the position of the blade.

[0037] In some embodiments, the grinding device includes a bracket, a first telescopic rod 9 and a grinding disc 11, the first telescopic rod 9 is slidably connected to the bracket, the grinding disc 11 is arranged on the first telescopic rod 9, and the grinding disc 11 is used to grind the blades placed in the blade grinding area.

[0038] In some embodiments, the bracket includes a column 5 and a support frame 6, one end of the column 5 is connected to the workbench 2, and the other end is connected to the support frame 6, and a slide groove 7 is provided on the support frame 6. The grinding device also includes a sliding block 8 slidably connected to the slide groove 7, and the sliding block 8 is connected to the first telescopic rod 9.

[0039] In some embodiments, the grinding device further includes a cleaning device, which is disposed on a bracket, and the bracket is used to clean dust and residue on the surface of the workbench 2.

[0040] In some embodiments, the cleaning device includes a second telescopic rod 20, a movable shaft 21, a connecting rod 22 and a brush 23. One end of the second telescopic rod 20 is connected to the bracket, and the other end is rotatably connected to the movable shaft 21. One end of the connecting rod 22 is connected to the movable shaft 21, and the other end is connected to the brush 23.

[0041] refer to Figure 1-3 , a specific example provided by the present disclosure includes:

[0042] The grinding equipment includes a body 1, a workbench 2, a protective cover 3, a turbine blade 4, a column 5, a support frame 6, a slide 7, a sliding block 8, a first telescopic rod 9, a driving motor 10, a grinding disc 11, a dust removal hole 12, a shock absorbing layer 13, a dust collecting trough 14, a suction fan 15, a hydraulic cylinder 16, a reset spring 17, a limit plate 18, a fixed rod 19, a second telescopic rod 20, a movable shaft 21, a connecting rod 22, a brush 23 and a screw 24.

[0043] A workbench 2 is installed above the machine body 1, and the workbench 2 has a grinding area for preventing blades. A protective cover 3 is fixed on the workbench 2, and the protective cover 3 is ring-shaped and surrounds the blade grinding area of ​​the workbench 2. The symmetry center of the protective cover 3 coincides with the symmetry center of the workbench 2. The protective cover 3 is an annular hollow structure, which is convenient for avoiding the splashing of dust generated by grinding and plays a protective role. The symmetry center of the protective cover 3 coincides with the symmetry center of the workbench 2, so that the protective cover 3 has an equal protective effect on the surroundings of the workbench 2.

[0044] The grinding area in the middle above the workbench 2 is used to place the turbine blade 4, and columns 5 are fixed on both sides above the workbench 2, a support frame 6 is installed in the middle of the column 5, and a slide groove 7 is provided on the inner side of the support frame 6, a sliding block 8 is installed on the slide groove 7, and a first telescopic rod 9 is fixed below the sliding block 8. The sliding block 8 forms a sliding structure through the slide groove 7, and the sliding block 8 and the first telescopic rod 9 are fixedly connected. The sliding block 8 forms a sliding structure through the slide groove 7 so that the sliding block 8 can move on the support frame 6 through the slide groove 7.

[0045] The sliding block 8 and the first telescopic rod 9 are fixedly connected so that the sliding block 8 can drive the first telescopic rod 9 to move and adjust the position of the grinding disc 11. A driving motor 10 is installed below the first telescopic rod 9, and a grinding disc 11 is fixed below the driving motor 10. The outer side of the grinding disc 11 is a frosted structure, and the grinding disc 11 is adjusted by the first telescopic rod 9. The frosted structure of the outer side of the grinding disc 11 is convenient for increasing the friction force to grind the outer surface of the turbine blade 4. In addition, the grinding disc 11 is a lifting structure formed by the first telescopic rod 9, which is convenient for adjusting the height of the grinding disc 11 through the first telescopic rod 9, so as to grind turbine blades 4 of different sizes.

[0046] The dust removal hole 12 is arranged in the blade grinding area inside the workbench 2, and a shock absorbing layer 13 is sandwiched inside the workbench. A dust collecting groove 14 is arranged in the machine body 1 below the dust removal hole 12, and the dust removal hole 12 is connected to the dust collecting groove 14. A suction fan 15 is arranged inside the dust collecting groove 14.

[0047] Hydraulic cylinders 16 are fixed on opposite sides of the inner wall of the protective cover 3, and reset springs 17 are installed on the hydraulic cylinders 16. Limit plates 18 are correspondingly arranged on the upper side of the reset springs 17. The two opposite limit plates 18 are symmetrical along the central axis of the turbine blade 4.

[0048] The limit plate 18 forms an elastic structure through the return spring 17. The limit plate 18 is symmetrical along the central axis of the turbine blade 4 to facilitate uniform fixation of both sides of the turbine blade 4. The limit plate 18 forms an elastic structure through the return spring 17 so that the limit plate 18 can tightly fix the turbine blade 4 under the elastic action of the return spring 17.

[0049] A fixed rod 19 is installed on the outer side of the support frame 6, and a second telescopic rod 20 is fixed below the fixed rod 19, a movable shaft 21 is provided below the second telescopic rod 20, and a connecting rod 22 is fixed below the movable shaft 21, a brush 23 is installed below the connecting rod 22, screws 24 are fixed on both sides of the connecting rod 22, and the brush 23 forms a detachable structure with the connecting rod 22 through the screws 24.

[0050] The connecting rod 22 forms a rotating structure through the movable shaft 21, and the brush 23 forms a detachable structure with the connecting rod 22 through the screw 24, which is convenient for removing the brush 23 for replacement. The connecting rod 22 forms a movable structure through the movable shaft 21 so that the brush 23 and the connecting rod 22 can rotate under the action of the movable shaft 21 to clean the surface of the workbench 2.

[0051] Working principle: During the production and processing of turbine blades, the turbine blade 4 is placed in the blade grinding area of ​​the workbench 2, and the length of the hydraulic cylinder 16 is adjusted so that the inner side of the limit plate 18 fits with the outer side of the turbine blade 4, so that the limit plate 18 tightly fixes the turbine blade 4 under the elastic action of the return spring 17. The position of the grinding disc 11 is adjusted by moving the sliding block 8 in the slide groove 7 so that the grinding disc 11 is located above the turbine blade 4, and then the height of the grinding disc 11 is adjusted by the first telescopic rod 9 so that the grinding disc 11 fits with the turbine blade 4.

[0052] The drive motor 10 is started, so that the drive motor 10 rotates to drive the grinding disc 11 to grind the turbine blade 4. Further, two grinding discs 11 are used to grind two turbine blades 4 at the same time to improve the grinding efficiency. While grinding, the shock-absorbing layer 13 can reduce the vibration generated by grinding and reduce the grinding error. The protective cover 3 can play a protective role to prevent dust generated by grinding from splashing.

[0053] Further, the suction fan 15 is started so that the suction fan 15 sucks the debris generated by grinding into the dust collecting tank 14 through the dust removal hole 12. After grinding, the length of the cleaning brush 23 is adjusted by the second telescopic rod 20, and then the connecting rod 22 is rotated by the movable shaft 21 so that the brush 23 can clean the surface of the workbench 2. After long-term use, the brush 23 can be disassembled and replaced by the screw 24, thus completing the use process of the entire turbine blade production and processing grinder.

[0054] The grinding device disclosed in the present invention is provided with a protective cover to play a protective role and prevent dust generated by grinding from splashing. The column is used to install and fix the support frame, and the slide groove inside the support frame facilitates the movement of the sliding block, and the sliding block can drive the position of the first telescopic rod to move, thereby adjusting the position of the grinding disc. The first telescopic rod facilitates the adjustment of the height of the grinding disc, so that the grinding disc can grind turbine blades of different sizes.

[0055] The driving motor can drive the grinding disc to rotate, thereby grinding the turbine blades. The shock-absorbing layer can reduce the vibration caused by grinding and reduce the grinding error. The dust removal hole is a circular through hole, which is convenient for the debris generated by grinding to enter the dust collecting tank. The dust collecting tank is used to collect the dust and debris generated by grinding, and the suction fan is convenient for sucking the debris into the dust collecting tank.

[0056] The hydraulic cylinder is convenient for adjusting the position of the limit plate, the return spring is elastic, and the limit plate can be tightly fixed to the turbine blade under the elastic action of the spring. The second telescopic rod is convenient for adjusting the length of the cleaning brush, and the cleaning brush can clean the surface of the workbench. The movable shaft is convenient for the rotation of the connecting rod, and the screw is convenient for the installation and removal of the cleaning brush.

[0057] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present disclosure, but the present disclosure is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and substance of the present disclosure, and these modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A steam turbine blade grinding device, characterized in that: include: A machine body having a dust collecting tank; A workbench, which is covered on the notch of the dust collecting tank, wherein the workbench has a blade grinding area, and the blade grinding area of ​​the workbench is provided with a dust removal hole connected to the dust collecting tank; A grinding device is arranged at one end of the workbench away from the machine body, the grinding device is arranged corresponding to the blade grinding area, and the grinding device is used to grind the blades placed in the blade grinding area; A negative pressure device is arranged in the dust collecting groove, and is used to generate negative pressure in the dust collecting groove, so that the dust and slag generated in the blade grinding area are sucked into the dust collecting groove through the dust removal hole.

2. A steam turbine blade grinding device according to claim 1, characterized in that: There are a plurality of dust removal holes, and the plurality of dust removal holes are arranged in an array in the blade grinding area.

3. The steam turbine blade grinding equipment according to claim 1, characterized in that: Also includes: A protective cover is arranged at one end of the workbench away from the machine body; wherein the protective cover is arranged around the blade grinding area.

4. The steam turbine blade grinding equipment according to claim 3, characterized in that: Also includes: Two limiting devices are arranged at a relative interval on the inner peripheral wall of the protective cover, wherein the two limiting devices are used to limit the position of the blades placed in the blade grinding area.

5. The steam turbine blade grinding equipment according to claim 4, characterized in that: The limiting device comprises a hydraulic cylinder, a return spring and a limit plate; the hydraulic cylinder is arranged on the inner peripheral wall of the protective cover, one end of the return spring is connected to the piston rod of the hydraulic cylinder, and the other end is connected to the limit plate; The hydraulic cylinders of the two limiting devices respectively drive the limiting plates to abut against the blades placed in the blade grinding area through the return springs to limit the position of the blades.

6. The steam turbine blade grinding equipment according to claim 1, characterized in that: The grinding device comprises a bracket, a first telescopic rod and a grinding disc, wherein the first telescopic rod is slidably connected to the bracket, the grinding disc is arranged on the first telescopic rod, and the grinding disc is used to grind the blade placed in the blade grinding area.

7. The steam turbine blade grinding equipment according to claim 6, characterized in that: The bracket includes a column and a support frame; one end of the column is connected to the workbench, and the other end is connected to the support frame; a slide groove is provided on the support frame; The grinding device further comprises a sliding block slidably connected to the sliding groove, and the sliding block is connected to the first telescopic rod.

8. The steam turbine blade grinding equipment according to claim 6, characterized in that: Also includes: A cleaning device is arranged on the bracket, and the bracket is used to clean dust and residue on the surface of the workbench.

9. The steam turbine blade grinding equipment according to claim 8, characterized in that: The cleaning device includes a second telescopic rod, a movable shaft, a connecting rod and a brush. One end of the second telescopic rod is connected to the bracket, and the other end is rotatably connected to the movable shaft; one end of the connecting rod is connected to the movable shaft, and the other end is connected to the brush.

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