Operation tool for processing steam inlet edge of hollow stator blade of nuclear turbine

Abstract

The utility model relates to the field of machining tools for hollow stator blades of steam turbines, and discloses an operation tool for machining a steam inlet edge of a hollow stator blade of a nuclear steam turbine, which comprises a fixing device and a planer tool which are arranged up and down, the fixing device is used for fixing a to-be-processed steam inlet edge; a blade of the planer tool faces downwards, the planer tool can move up and down and left and right above the fixing device, and the front angle and the rear angle of the blade of the planer tool correspond to the fixed steam inlet edge to be machined respectively. According to the particularity of the steam inlet edge of the hollow stator blade of the nuclear turbine, the steam inlet edge can be machined, operation is easy, and meanwhile the machining accuracy and efficiency can be guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of machining tooling for hollow stationary blades of steam turbines, specifically, to a machining tooling for machining the steam inlet side of hollow stationary blades of nuclear power steam turbines. Background Technology

[0002] Hollow blades are characterized by their light weight, low manufacturing cost, and flexible production cycle, and have been widely used in kinetic energy machinery, including the hollow blades used in nuclear power turbines.

[0003] The hollow blades used in nuclear power turbines are low-pressure stationary blades, such as those in HD1160A-118114C and HD1160A-123114C nuclear power turbines. The hollow stationary blades of the turbine are mainly composed of the inlet edge, inner arc, back arc, and outlet edge, welded together to form a closed hollow cross-section. During the process of localization, the material dimensions for manufacturing various components are usually slightly larger than the design dimensions, resulting in certain deviations after the components are formed. This makes it easy for the surface dimensions of the assembled hollow stationary blades to exceed the tolerance range of ±2mm.

[0004] To address the technical issue that the dimensions of the assembled hollow stationary blades easily exceed the tolerance range of ±2mm, additional machining of certain components is typically performed. Since the steam inlet edge has a linear structure, refer to... Figure 1 As shown, the steam inlet edge is easier to machine than the already formed inner and back arcs; therefore, it is usually preferred to perform additional machining on the steam inlet edge. However, due to the irregular cross-section of the steam inlet edge, referring to... Figure 2 As shown, Figure 2 The side view of the steam inlet edge makes it difficult to fix; at the same time, the large length-to-diameter ratio of the steam inlet edge results in poor rigidity. Therefore, the machining of the steam inlet edge is quite difficult.

[0005] In the existing technology, there are no publicly reported tooling solutions for processing the aforementioned steam inlet side. Utility Model Content

[0006] The technical objective of this utility model is to provide a machining tooling for processing the steam inlet edge of hollow stationary blades of nuclear power turbines, which is simple to operate and has high machining accuracy, in view of the special characteristics of the steam inlet edge of the hollow stationary blades of nuclear power turbines and the shortcomings of the existing technology.

[0007] The technical solution adopted in this utility model is as follows:

[0008] A tooling for machining the steam inlet edge of hollow stationary blades in nuclear power turbines.

[0009] The working tooling includes a fixing device arranged in an upper and lower position and a planer blade;

[0010] The fixing device is used to fix the steam inlet edge to be processed;

[0011] The cutting edge of the planer faces downwards, and the planer can move up, down, left, and right above the fixing device. The front and rear angles of the cutting edge of the planer correspond to the fixed steam inlet edge to be processed.

[0012] The above-mentioned technical measures are designed for the special characteristics of the steam inlet edge of the hollow stationary blade of a nuclear power turbine. The steam inlet edge to be processed is fixed in a fixed device. The planer moves downward and the cutting edge of the planer is inserted into the steam inlet edge to be processed. The planer moves left or right to achieve the planing of the steam inlet edge to be processed until the processing requirements are met, thus completing the processing of the steam inlet edge. The operation is simple and can ensure the accuracy and efficiency of the processing.

[0013] Furthermore, the fixing device includes a base;

[0014] On the base, multiple sets of fixing components are arranged at intervals along the length of the base;

[0015] Each set of fixing components includes a first fixing plate and a second fixing plate arranged accordingly;

[0016] The first fixing plate is equipped with clamping bolts;

[0017] The upper part of the second fixing plate is provided with a groove that matches the shape of the steam inlet edge to be processed, which is used to position the steam inlet edge to be processed;

[0018] During the processing, the clamping bolt passes through the corresponding first fixing plate and abuts against one side of the steam inlet side to be processed.

[0019] The above-mentioned technical measures are designed for the special characteristics of the steam inlet edge of the hollow stationary blade of nuclear power turbine. The steam inlet edge to be processed is placed in a groove that matches the shape of the steam inlet edge to be processed. At the same time, the clamping bolts are used to abut against one side of the steam inlet edge to be processed, thereby clamping and fixing the steam inlet edge to be processed, preventing the steam inlet edge from moving during the processing, facilitating processing, and improving the stability and accuracy of processing.

[0020] The above-mentioned technical measures achieve clamping and fixing of the steam inlet side by setting up multiple sets of fixing components, which helps to enhance the overall structure of the working tool and the structural rigidity of the steam inlet side.

[0021] Furthermore, a gap is reserved between the first fixing plate and the corresponding second fixing plate;

[0022] The length of the clamping bolt is the thickness of the first fixing plate plus the spacing.

[0023] In the above technical measures, the length of the clamping bolt is the thickness of the first fixing plate plus the spacing, ensuring that the clamping bolt can abut against the steam inlet side to be processed, thereby achieving the clamping and fixing of the steam inlet side to be processed.

[0024] Furthermore, the clamping bolt abuts against the middle of the steam inlet side to be processed.

[0025] In the above technical measures, the clamping bolts are abutted against the middle of the steam inlet edge to be processed, which can ensure that the steam inlet edge to be processed is subjected to uniform force during the clamping process, avoid damage caused by uneven force, and achieve a more stable clamping and fixing of the steam inlet edge to be processed.

[0026] Furthermore, both the first fixing plate and the second fixing plate are connected to the base by welding.

[0027] The above-mentioned technical measures connect the first and second fixing plates to the base by welding, which helps to improve structural stability.

[0028] Furthermore, multiple sets of the fixing components are arranged equidistantly on the base.

[0029] In the above-mentioned technical measures, multiple sets of fixing components are arranged at equal intervals on the base, which can ensure that the steam inlet edge to be processed is subjected to uniform support force during the processing, which is beneficial to improving stability and reducing damage caused by uneven force.

[0030] Furthermore, the work fixtures are arranged on the machine tool;

[0031] The fixing device of the working tool is fixed on the worktable of the machine tool, and the planer is connected to the head of the machine tool.

[0032] The above-mentioned technical measures, by arranging the work fixtures on the machine tool, enable the machine tool to move the planer up, down, left, and right, which helps to improve the level of automation and increase work efficiency.

[0033] One or more technical solutions provided by this utility model have at least the following technical effects or advantages:

[0034] This invention addresses the unique characteristics of the steam inlet edge of hollow stationary blades in nuclear power turbines. The steam inlet edge to be processed is fixed in a fixed device. A planer moves downwards, its blade inserting into the steam inlet edge. The planer moves left or right to plan the edge until the processing requirements are met, thus completing the processing of the steam inlet edge. The operation is simple, while ensuring both accuracy and efficiency.

[0035] This invention addresses the unique characteristics of the steam inlet edge of hollow stationary blades in nuclear power turbines. It places the steam inlet edge to be processed in a groove that matches the shape of the steam inlet edge, and simultaneously uses clamping bolts to abut against one side of the steam inlet edge to clamp and fix it, preventing the steam inlet edge from moving during processing, facilitating processing, and improving processing stability and accuracy. Attached Figure Description

[0036] The accompanying drawings, which are provided to further illustrate the embodiments of the present invention and constitute a part of the present invention, do not constitute a limitation thereof.

[0037] Figure 1 This is a schematic diagram of the steam inlet side of the hollow stationary blade of a nuclear power turbine.

[0038] Figure 2 This is a side view of the steam inlet side of the hollow stationary blade of a nuclear power turbine.

[0039] Figure 3 This is a schematic diagram of the structure of this utility model in use;

[0040] Figure 4 This is a top view of the present invention in use;

[0041] Figure 5 This is a side view of the present invention in use;

[0042] Among them, 1-steam inlet side; 2-base; 3-first fixing plate; 4-clamping bolt; 5-second fixing plate; 6-planing blade. Detailed Implementation

[0043] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, where there is no conflict, the embodiments of this utility model and the features within them can be combined with each other.

[0044] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0045] Example 1

[0046] Reference Figures 3-5 This embodiment provides a tooling for machining the steam inlet edge of hollow stationary blades in nuclear power turbines.

[0047] The work tooling includes a fixed device arranged in upper and lower positions and a planer blade 6;

[0048] The work fixtures are arranged on the machine tool, the fixing device of the work fixtures is fixed on the worktable of the machine tool, and the planer 6 is connected to the head of the machine tool.

[0049] The fixing device is used to fix the steam inlet edge 1 to be processed;

[0050] The cutting edge of the planer 6 faces downwards. The planer 6 can move up, down, left, and right above the fixed device, and the front and rear angles of the cutting edge of the planer 6 correspond to the fixed steam inlet edge 1 to be processed.

[0051] The fixing device includes a base 2;

[0052] The base 2 is fixed on the machine tool's worktable.

[0053] On base 2, multiple sets of fixing components are arranged at intervals along the length of base 2;

[0054] Multiple sets of fixing components are arranged at equal intervals on the base 2.

[0055] Each set of fixing components includes a first fixing plate 3 and a second fixing plate 5 arranged accordingly;

[0056] The first fixing plate 3 and the second fixing plate 5 are both connected to the base 2 by welding.

[0057] The first fixing plate 3 is equipped with clamping bolts 4;

[0058] The upper part of the second fixing plate 5 is provided with a groove that matches the shape of the steam inlet edge 1 to be processed, which is used to position the steam inlet edge 1 to be processed;

[0059] During the processing operation, the clamping bolt 4 passes through the corresponding first fixing plate 3 and abuts against one side of the steam inlet edge 1 to be processed, and the clamping bolt 4 abuts against the middle of the steam inlet edge 1 to be processed.

[0060] In this embodiment, the first fixing plate 3 and the clamping bolt 4 are in a one-to-one correspondence; the number of fixing components is set according to the length of the steam inlet edge 1 to be processed, and this embodiment does not make a specific limitation.

[0061] A gap is reserved between the first fixing plate 3 and the corresponding second fixing plate 5; the length of the clamping bolt 4 is the thickness of the first fixing plate 3 plus the gap.

[0062] In application, the steam inlet edge 1 to be processed is placed into the groove of the second fixed plate 5, and the clamping bolt 4 is tightened so that the clamping bolt 4 passes through the first fixed plate 3 and abuts against the middle of the steam inlet edge 1 to be processed. The machine tool is operated to move the planer 6 downward. According to the design requirements, the planer 6 is inserted into the steam inlet edge 1 to be processed to the preset depth. The machine tool is operated to move the planer 6 left and right to realize planing. After each planing, the size of the steam inlet edge 1 is checked until the design requirements are met and the processing is completed.

[0063] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0064] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A tooling for machining the steam inlet edge of a hollow stationary blade in a nuclear power turbine, characterized in that: The work tooling includes a fixing device arranged in upper and lower positions and a planer (6). The fixing device is used to fix the steam inlet edge to be processed (1). The cutting edge of the planer (6) faces downward. The planer (6) can move up, down, left, and right above the fixing device. The front and rear angles of the cutting edge of the planer (6) correspond to the fixed steam inlet edge (1) to be processed.

2. The tooling for machining the steam inlet edge of the hollow stationary blade of a nuclear power turbine according to claim 1, characterized in that: The fixing device includes a base (2); On the base (2), multiple sets of fixing components are arranged at intervals along the length direction of the base (2); Each set of fixing components includes a first fixing plate (3) and a second fixing plate (5) arranged accordingly; The first fixing plate (3) is equipped with clamping bolts (4); The upper part of the second fixing plate (5) is provided with a groove that matches the shape of the steam inlet edge (1) to be processed, which is used to position the steam inlet edge (1) to be processed. During the processing operation, the clamping bolt (4) passes through the corresponding first fixing plate (3) and abuts against one side of the steam inlet edge (1) to be processed.

3. The tooling for machining the steam inlet edge of hollow stationary blades of a nuclear power turbine according to claim 2, characterized in that: A gap is reserved between the first fixing plate (3) and the corresponding second fixing plate (5); The length of the clamping bolt (4) is the thickness of the first fixing plate (3) plus the spacing.

4. The tooling for machining the steam inlet edge of hollow stationary blades of a nuclear power turbine according to claim 2, characterized in that: The clamping bolt (4) abuts against the middle of the steam inlet edge (1) to be processed.

5. The tooling for machining the steam inlet edge of hollow stationary blades of a nuclear power turbine according to claim 2, characterized in that: The first fixing plate (3) and the second fixing plate (5) are both connected to the base (2) by welding.

6. The tooling for machining the steam inlet edge of hollow stationary blades of a nuclear power turbine according to claim 2, characterized in that: Multiple sets of the fixing components are arranged at equal intervals on the base (2).

7. The tooling for machining the steam inlet edge of hollow stationary blades of a nuclear power turbine according to claim 1, characterized in that: The work fixtures are arranged on the machine tool; The fixing device of the work tool is fixed on the worktable of the machine tool, and the planer (6) is connected to the head of the machine tool.

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