Processing device for turbine seat ring

Abstract

The utility model belongs to the technical field of production and manufacturing of water turbines, and specifically relates to a processing device for a water turbine seat ring, which is used for on-site processing of a seat ring component, and comprises an upper frame, a lower frame, a rotating center column, a tool rod, a processing tool and a power and control system; the upper end and the lower end of the rotating center column are rotatably connected to the upper frame and the lower frame respectively; the tool rod is liftably connected to the rotating center column; the processing tool is connected to one end of the tool rod through a cross slide; the power and control system comprises a driving motor, a distribution box and a control box, the driving motor is connected to the top of the rotating center column through a reducer and a coupling in sequence; the distribution box is used for distributing electric energy, and the control box is used for remotely controlling the driving motor, the cross slide and the processing tool, the processing device has a simple structure, is easy to install, has a low manufacturing cost, has stable working performance, and can effectively ensure the dimensional accuracy and surface roughness of the seat ring component.

Description

Technical Field

[0001] The utility model relates to the technical field of production and manufacturing of water turbines, in particular to a processing device for a water turbine seat ring. Background Art

[0002] The seat ring is an important buried component in the hydro-turbine generator. It will bear the weight of the unit, the weight of concrete, the axial water thrust of the runner and the internal water pressure of the volute. It should have sufficient strength, rigidity and stability, so it places extremely high demands on the manufacturing process. The seat ring urgently needs to be processed on site due to the following factors: 1. The seat ring is not completely disinfected after processing in the factory, and it is deformed after long-distance transportation or disassembly; 2. The seat ring is deformed by welding with the volute, foundation ring or tailwater cone; 3. Displacement occurs during the concrete pouring process; 4. The seat ring needs to be repaired by surfacing welding due to rust or deformation during the overhaul of the unit.

[0003] At present, there are many methods for on-site processing of seat rings. Manual grinding is basically used for seat ring components with small or partial deformation. Vertical lathes are required for seat ring components with large reserved amounts and deformations. Traditional vertical lathes have vertical-axis umbrella-type faceplates, which make the vertical lathes bulky and heavy, the umbrella-type faceplate structure unstable, and the manufacturing cost of the vertical lathes high.

[0004] Therefore, it is urgent to design a processing device for a turbine seat ring with simple structure and low cost. Utility Model Content

[0005] In order to improve the problem that the existing lathe for processing the turbine seat ring is bulky and heavy and has a high cost, the utility model provides a processing device for the turbine seat ring.

[0006] The embodiment of the utility model provides a processing device for a turbine seat ring, which is used for on-site processing of a seat ring assembly, wherein the seat ring assembly comprises a pit liner, a seat ring body, a base ring and a tailwater cone arranged in sequence from top to bottom, and the processing device comprises:

[0007] An upper frame fixedly connected to the inner peripheral wall of the pit lining;

[0008] A lower frame fixedly connected to the inner peripheral wall of the tailwater cone;

[0009] A rotating central column is arranged vertically, with its upper end connected to the upper frame through a first bearing, and its lower end connected to the lower frame through a second bearing;

[0010] A knife bar, which is liftable and connected to the rotating center column;

[0011] A machining tool is connected to one end of the tool bar via a cross slide;

[0012] A power and control system, including a drive motor, a distribution box and a control box, wherein the drive motor is fixed directly above the rotating central column, and the drive motor is connected to the top of the rotating central column through a reducer and a coupling in sequence;

[0013] The distribution box is used to distribute electric energy to the drive motor, the cross slide, the processing tool and the control box, and the control box is used to control the operation of the drive motor, the cross slide and the processing tool.

[0014] In some embodiments, an upper pier is fixedly provided on the inner circumferential wall of the pit liner to support the upper frame, and a lower pier is fixedly provided on the inner circumferential wall of the tailwater cone to support the lower frame.

[0015] In some embodiments, the knife rod is detachably mounted on the rotating center column through a sleeve, so that the knife rod can stay at different heights along the axial direction of the rotating center column.

[0016] In some embodiments, the cross slide can rotate relative to the tool bar so that the machining tool can be fed horizontally along a horizontal track of the cross slide.

[0017] In some embodiments, a micrometer is provided on the cross slide to detect the verticality of the horizontal track and the rotating center column.

[0018] In some embodiments, the distribution box is fixed on the upper frame, the control box is fixed on the tool rod, and a conductive slip ring is provided at the lower end of the rotating center column to facilitate the wiring of the distribution box to the cross slide, the machining tool and the control box on the tool rod.

[0019] In some embodiments, a counterweight is provided at one end of the tool bar away from the machining tool, and the counterweight is used to balance the weight at both ends of the tool bar.

[0020] In some embodiments, the driving motor is fixedly connected to the upper frame via a bracket, and the driving motor is a variable frequency motor.

[0021] In some embodiments, the machining tool includes a tool holder and a tool holder equipped with a conventional lathe to simulate boring operations to machine the various machining surfaces of the seat ring assembly; the machining tool also includes an electric grinding head, which is equipped with a bowl-shaped grinding wheel to grind each of the machining surfaces.

[0022] In some embodiments, the first bearing is a thrust guide bearing and the second bearing is a guide bearing.

[0023] In the processing device of the turbine seat ring of the utility model, the upper frame and the lower frame are fixed with a hanging structure, and the driving motor drives the rotating central column directly below it to drive the liftable tool rod to rotate, so that the processing tool on the tool rod corresponds to the different positions of the processing seat ring assembly; the processing device has a simple structure, is easy to install, has a low manufacturing cost, and has stable working performance, and can effectively ensure the dimensional accuracy and surface roughness of the seat ring assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a processing device for a turbine seat ring of this embodiment;

[0025] Figure 2 Schematic diagram of the processing position of the seat ring assembly.

[0026] In the figure: pit lining 10; seat ring body 11; foundation ring 12; tailwater cone 13; upper frame 20; lower frame 21; upper pier 22; lower pier 23; rotating center column 30; first bearing 31; second bearing 32; drive motor 40; reducer 41; coupling 42; tool rod 50; jacket 51; cross slide 52; processing tool 53; counterweight 54; distribution box 60; control box 61; conductive slip ring 62. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is described in detail in some embodiments in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportion or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0029] The directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "middle", "longitudinal", "lateral", "horizontal", "inner", "outer", "radial", "circumferential" and the like in this specification are based on the directions or positional relationships shown in the drawings and are only for the convenience of simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0030] like Figure 1 As shown, this embodiment provides a processing device for a turbine seat ring, which is used for on-site processing of a turbine seat ring assembly, wherein the seat ring assembly includes a pit liner 10, a seat ring body 11, a base ring 12 and a tailwater cone 13 from top to bottom, and the inner diameters of the pit liner 10, the seat ring body 11, the base ring 12 and the tailwater cone decrease in sequence.

[0031] See Figure 2 The processing device is mainly used to process multiple positions of the seat ring assembly, including: the ring band processing of the upper ring plate of the ring seat (A), the upper sealing groove processing (B), the inner ring surface processing of the upper ring plate (C), the ring band processing of the lower ring plate of the ring seat (D), the lower sealing groove processing (E), the inner ring surface processing of the lower ring plate (F), the ring band processing of the upper flange of the base ring 12 (G), and the ring band processing of the lower flange of the base ring 12 (H). It should be noted that the components and arrangement of the seat ring assembly and the processing methods of each position are all prior art, so the structure of the seat ring assembly will not be repeated in this embodiment.

[0032] See Figure 1 The processing device of this embodiment includes an upper frame 20, a lower frame 21, a rotating center column 30, a tool rod 50, a processing tool 53 and a power and control system. The upper frame 20 of this embodiment is fixedly connected to the inner peripheral wall of the pit liner 10, and the upper pier 22 is preferably fixedly arranged on the inner peripheral wall of the pit liner 10 to support the upper frame 20. The end of the upper frame 20 is overlapped on the upper pier 22, so that the upper frame 20 and the pit liner 10 remain fixed. The lower frame 21 of this embodiment is fixedly connected to the inner peripheral wall of the tailwater cone 13, and the lower pier 23 is preferably fixedly arranged on the inner peripheral wall of the tailwater cone 13 to support the lower frame 21, and the end of the lower frame 21 is overlapped on the lower pier 23, so that the lower frame 21 and the tailwater cone 13 remain fixed. Coaxially distributed through holes are opened in the middle of the upper frame 20 and the lower frame 21 to connect the rotating center column 30.

[0033] The rotating center column 30 of this embodiment is arranged vertically, and the two ends of the rotating center column 30 are rotatably connected to the upper frame 20 and the lower frame 21. Specifically, the upper end of the rotating center column 30 is connected to the upper frame 20 through a first bearing 31, and the lower end of the rotating center column 30 is connected to the lower frame 21 through a second bearing 32. The first bearing 31 is preferably a thrust guide bearing, and the clearance of the bearing is adjustable. The second bearing 32 is preferably a guide bearing, and a small clearance cylindrical roller bearing is specifically selected to ensure the stability of the rotation of the rotating center column 30.

[0034] The power and control system of this embodiment includes a drive motor 40 for driving the rotating central column 30. The drive motor 40 is fixed to the top of the rotating central column 30 through a bracket, and the drive motor 40 is connected to the top of the rotating central shaft through a reducer 41 and a coupling 42. The drive motor 40 is located in the middle position, which helps the entire processing device to be evenly stressed, and can ensure the smooth operation of the processing device and stable working performance.

[0035] The tool rod 50 of the present embodiment is perpendicular to the rotating center column 30, and the tool rod 50 is connected to the rotating center column 30 in a lifting manner. The tool rod 50 of the present embodiment can be lifted and lowered specifically means that the tool rod 50 can stay at different heights along the axial direction of the rotating center column 30. In the present embodiment, a jacket 51 is preferably provided on the tool rod 50, so that the tool rod 50 can be detachably mounted on the rotating center column 30 through the jacket 51. When it is necessary to adjust the height of the tool rod 50, it is necessary to first loosen the jacket 51, and then use a lifting tool to suspend the tool rod 50 to the required height, and finally fasten the jacket 51 to the rotating center column 30. The tool rod 50 has a simple structure and has a low cost while being able to meet the lifting requirements. In some embodiments, the tool rod 50 can be connected to the rotating center column 30 using a conventional automatic lifting assembly for ease of use.

[0036] In this embodiment, one end of the tool bar 50 is connected to the processing tool 53 through a cross slide 52, and the other end of the tool bar 50 is provided with a counterweight 54 to balance the weight of both ends of the tool bar 50. During the processing, the driving motor 40 drives the rotating center column 30 to rotate through the reducer 41 and the coupling 42, and the rotating rotating center column 30 can drive the tool bar 50 thereon to rotate, so that the processing tool 53 connected to the tool bar 50 moves to the position to be processed, so that the processing tool 53 can process the seat ring assembly conveniently.

[0037] The cross slide 52 of this embodiment is preferably rotatable relative to the tool bar 50 to maintain the horizontal track of the cross slide 52 and the vertical state of the rotating center column 30, so that the processing tool 53 can be fed horizontally along the horizontal track of the cross slide 52. Although the rotating center column 30 is set upright, it is difficult for the tool bar 50 to remain absolutely horizontal during the lifting process, which will cause the tool assembly to feed along the horizontal track and make the processed plane a conical surface. Therefore, it is necessary to rotate the cross slide 52 to keep the horizontal track absolutely horizontal. Specifically, a micrometer is preferably provided on the cross slide 52, which is used to detect the verticality of the horizontal track of the cross slide 52 and the rotating center column 30. The micrometer has a low cost and is convenient for determining the state of the cross slide 52 relative to the rotating center column 30 to ensure the processing quality. It should be noted that the connection method in which the cross slide 52 can rotate relative to the tool bar 50 is relatively conventional and diversified, and the state of the cross slide 52 can also be detected in a variety of relatively conventional ways, so this embodiment will not be repeated.

[0038] In this embodiment, the drive motor 40 preferably uses a variable frequency motor 40 to achieve stepless speed regulation of the rotating center column 30; the power in the cross slide 52 is provided by the stepper motor 40; the tool holder and tool holder in the processing tool 53 are configured according to a conventional lathe, which is equivalent to a giant boring bar boring each processing surface of the seat ring to simulate the boring operation to process each processing surface of the seat ring assembly. The processing tool 53 can also include an electric grinding head, which is equipped with a bowl-shaped grinding wheel to grind each processing surface and make its surface roughness meet the requirements. The processing device of the turbine seat ring can adopt a boring and grinding method to improve the dimensional accuracy and surface roughness of the workpiece.

[0039] The power and control system of this embodiment also includes a distribution box 60 and a control box 61. The distribution box 60 is used to distribute electric energy to the drive motor 40, the cross slide 52, the processing tool 53 and the control box 61, and the control box 61 is used to control the operation of the drive motor 40, the cross slide 52 and the processing tool 53. In this embodiment, the distribution box 60 is preferably fixed on the upper frame 20, and the control box 61 is fixed to the tool rod 50. A conductive slip ring 62 is provided at the lower end of the rotating center column 30 to facilitate the connection of the distribution box 60 to the cross slide 52, the processing tool 53 and the control box 61 on the tool rod 50. It should be noted that the positions of the distribution box 60 and the control box 61 can be set at any position according to requirements. Using the distribution box 60 to distribute electric energy and using the control box 61 to control the operation of components are prior arts, which will not be described in detail in this embodiment.

[0040] The installation process of this embodiment includes the following steps: setting support points, fixing an upper pier 22 on the inner circumferential wall of the pit liner 10, and fixing a lower pier 23 on the inner circumferential wall of the tailwater cone 13; installing a frame, setting the lower frame 21 on the lower pier 23 and the upper load-bearing frame on the upper pier 22, and adjusting the through holes of the upper frame 20 and the lower frame 21 to be coaxial; installing a rotating center column 30, sleeved with a first bearing 31 at the upper end of the rotating center column 30 to connect the upper frame 20, and sleeved with a second bearing 32 at the lower end of the rotating center to connect the lower frame 21; installing a driving assembly of the rotating center column 30, and sequentially setting a driving motor 40, The reducer 41 and the coupling 42 are connected to the top of the rotating center column 30; the liftable tool rod 50 is installed, and the tool rod 50 is detachably installed on the rotating center column 30, so that the rotating center column 30 can stay at different heights along the axial direction of the rotating center column 30; the processing tool 53 is installed, a cross slide 52 is set at one end of the tool rod 50, and a counterweight block 54 is set on the cross slide 52 and at the other end of the cross slide 52; the distribution box 60 and the control box 61 are installed, the distribution box 60 is installed on the upper frame 20, and the control box 61 is installed on the tool rod 50, and the distribution box 60 and the control box 61 are correspondingly connected and remotely controlled to drive the motor 40, the cross slide 52 and the processing tool 53.

[0041] The processing device of the turbine seat ring of this embodiment is fixed by a hanging structure, which has a simple structure, convenient installation, low manufacturing cost, stable working performance, and can effectively ensure the dimensional accuracy and surface roughness of the seat ring assembly.

[0042] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A processing device for a turbine seat ring, the processing device is used for on-site processing of a seat ring assembly, the seat ring assembly comprising a pit liner (10), a seat ring body (11), a base ring (12) and a tailwater cone (13) arranged in sequence from top to bottom, characterized in that: The processing device comprises: An upper frame (20) fixedly connected to the inner peripheral wall of the pit lining (10); A lower frame (21) fixedly connected to the inner peripheral wall of the tailwater cone (13); A rotating central column (30) is arranged vertically, with its upper end connected to the upper frame (20) via a first bearing (31), and its lower end connected to the lower frame (21) via a second bearing (32); A knife rod (50) connected to the rotating central column (30) in a liftable manner; A machining tool (53) connected to one end of the tool rod (50) via a cross slide (52); A power and control system comprises a drive motor (40), a distribution box (60) and a control box (61); the drive motor (40) is fixed directly above the rotating central column (30); the drive motor (40) is connected to the top of the rotating central column (30) via a reducer (41) and a coupling (42) in sequence; the distribution box (60) is used to distribute electric energy to the drive motor (40), the cross slide (52), the machining tool (53) and the control box (61); the control box (61) is used to control the operation of the drive motor (40), the cross slide (52) and the machining tool (53).

2. The processing device for a turbine seat ring according to claim 1, characterized in that: An upper buttress (22) is fixedly provided on the inner peripheral wall of the pit lining (10) to support the upper frame (20), and a lower buttress (23) is fixedly provided on the inner peripheral wall of the tailwater cone (13) to support the lower frame (21).

3. The processing device for a turbine seat ring according to claim 1, characterized in that: The knife rod (50) is detachably mounted on the rotating central column (30) via a jacket (51), so that the knife rod (50) can stay at different heights along the axial direction of the rotating central column (30).

4. The processing device for a turbine seat ring according to claim 1, characterized in that: The cross slide (52) can rotate relative to the tool rod (50) so that the processing tool (53) can be fed horizontally along the horizontal track of the cross slide (52).

5. The processing device for a turbine seat ring according to claim 4, characterized in that: The cross slide (52) is provided with a micrometer to detect the verticality between the horizontal track and the rotating center column (30).

6. The processing device for a turbine seat ring according to claim 1, characterized in that: The distribution box (60) is fixed on the upper frame (20), the control box (61) is fixed on the tool rod (50), and a conductive slip ring (62) is provided at the lower end of the rotating central column (30) to facilitate the connection of the distribution box (60) to the cross slide (52), the processing tool (53) and the control box (61) on the tool rod (50).

7. The processing device for a turbine seat ring according to claim 1, characterized in that: A counterweight block (54) is provided at one end of the tool rod (50) away from the processing tool (53), and the counterweight block (54) is used to balance the weight at both ends of the tool rod (50).

8. The processing device for a turbine seat ring according to claim 1, characterized in that: The drive motor (40) is fixedly connected to the upper frame (20) via a bracket, and the drive motor (40) is a variable frequency motor.

9. The processing device for a turbine seat ring according to claim 1, characterized in that: The machining tool (53) includes a tool holder and a tool holder provided for a lathe, which are used to simulate boring operations to machine the various machining surfaces of the seat ring assembly; the machining tool (53) also includes an electric grinding head, which is equipped with a bowl-shaped grinding wheel to grind each of the machining surfaces.

10. The processing device for a turbine seat ring according to claim 1, characterized in that: The first bearing (31) is a thrust guide bearing, and the second bearing (32) is a guide bearing.

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