A turbine generator mounting ring key tool

Abstract

The application provides a steam turbine generator installation ring key tool and belongs to the field of large steam turbine generators. The tool is simple to operate, stable, safe and reliable, and solves the problems of complicated installation process, low efficiency and the risk of sliding or falling in the prior art. The tool comprises a left side plate, a right side plate, a left supporting block, a right supporting block, a threaded rod, an insertion block, a rotating pin, a split pin and a cylindrical pin. The left supporting block is connected with the left side plate, the right supporting block is connected with the right side plate, the insertion block is installed at the end of the left side plate and the right side plate away from the threaded rod, the left threaded pin is installed in the left side plate, the right threaded pin is installed in the right side plate, the threaded rod is connected with the left threaded pin and the right threaded pin, the rotating arm is connected with the threaded rod, the handle is inserted into the rotating arm, and the rotating pin is installed at the connection between the left supporting block and the right supporting block. The tool is mainly used for ring key installation of steam turbine generators.

Description

Technical Field

[0001] This invention belongs to the field of large steam turbine generators, and in particular relates to a tool for installing ring keys on steam turbine generators. Background Technology

[0002] The ring key of a large steam turbine generator is an open elastic ring, similar in structure to an elastic retaining ring, but with a larger size. The main shaft of the steam turbine generator has an annular groove near its end, and the inner side of the retaining ring also has an annular groove near its end. The ring key is installed between the retaining ring and the main shaft to restrict their relative positions. However, due to the narrow space of the annular groove for installing the key, and the fact that the key is ultimately hidden inside the retaining ring and the main shaft, installing the key requires specialized tools. Existing technology lacks simple, stable, and reliable specialized installation tools, resulting in a complex and inefficient installation process, and the risk of slippage or detachment. Summary of the Invention In view of this, the present invention aims to provide a tool for installing ring keys on steam turbine generators, in order to solve the problem that the existing technology lacks a dedicated installation tool that is easy to operate, highly stable and safe, which leads to a complicated installation process, low efficiency and the risk of slippage or detachment.

[0003] To achieve the above objectives, the present invention adopts the following technical solution: a key mounting tool for a steam turbine generator, comprising a left side plate, a right side plate, a left support block, a right support block, a threaded rod, a right threaded pin, a left threaded pin, a rotating arm, a handle, an insert block, a pivot pin, a cotter pin, and a cylindrical pin. The left support block is connected to the left side plate, and the right support block is connected to the right side plate. The insert blocks are respectively installed at the ends of the left and right sides plate away from the threaded rod. The left threaded pin is installed in the left side plate, and the right threaded pin is installed in the right side plate. The threaded rod is connected to the left and right threaded pins. The rotating arm is connected to the threaded rod. The handle is inserted into the rotating arm, and the pivot pin is installed at the connection between the left and right support blocks.

[0004] Furthermore, the threaded rod has left-hand threads and right-hand threads on both sides respectively.

[0005] Furthermore, the left-hand threaded pin has an internal thread that mates with the left-hand thread, and the right-hand threaded pin has an internal thread that mates with the right-hand thread.

[0006] Furthermore, the left and right side plates are made of aluminum.

[0007] Furthermore, the insert is mounted inside the ring key.

[0008] Furthermore, handles are installed on both the left and right side panels.

[0009] Furthermore, the handle is connected to the left and right side plates by welding.

[0010] Furthermore, the rotating arm is connected to the threaded rod via a cylindrical pin.

[0011] Furthermore, the left support block is connected to the left side plate via a second hexagon socket head cap screw, and the right support block is connected to the right side plate via a second hexagon socket head cap screw.

[0012] Furthermore, the insert blocks are respectively mounted on the left and right side plates using first internal hexagonal head screws.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention uses aluminum plates to manufacture larger components such as the left and right side plates. Aluminum has the characteristics of low density and high strength. While ensuring structural rigidity and load-bearing capacity, it significantly reduces the overall weight of the tool, making it easier for operators to hold, move, and position the tool during installation. This reduces labor intensity and improves the convenience and comfort of operation, making it particularly suitable for the on-site installation environment of large steam turbine generators.

[0014] 2. The installation process of this invention is very simple. In actual use, it can be completed by the cooperation of only two operators: one person holds the tool steadily by the handles welded to the left and right side plates, and the other person is responsible for rotating the handle to tighten the ring key. Through this simple division of labor, the ring key can be quickly installed into the spindle ring groove. The entire tool has a flexible structure, does not require a complex external power source, and has a wide range of engineering applications and promotional value.

[0015] 3. This invention uses a left- or right-hand threaded design to achieve simultaneous tightening or loosening when rotated in the same direction. This mechanical structure ensures that the dimensions are in place, preventing slippage or detachment, and is safe and reliable. Attached Figure Description

[0016] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a front view of a turbine generator mounting ring key tool according to the present invention; Figure 2 This is a left view of a tool for installing a ring key on a steam turbine generator according to the present invention; Figure 3 This is a schematic diagram of the threaded rod described in this invention.

[0017] In the picture: 1-Left side plate, 2-Right side plate, 3-Left support block, 4-Right support block, 5-Threaded rod, 6-Right threaded pin, 7-Left threaded pin, 8-Rotating arm, 9-Handle, 10-Insertion block, 11-Turn pin, 12-Cotter pin, 13-Cylindrical pin, 14-Handle, 15-First internal hexagonal head screw, 16-Second internal hexagonal head screw, 17-Ring key, 18-Left-hand thread, 19-Right-hand thread. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other, and the described embodiments are only some embodiments of the present invention, not all embodiments.

[0019] Detailed Implementation Method 1: See Figure 1-3 This embodiment provides a key mounting tool for a steam turbine generator, comprising a left side plate 1, a right side plate 2, a left support block 3, a right support block 4, a threaded rod 5, a right threaded pin 6, a left threaded pin 7, a rotating arm 8, a handle 9, an insert block 10, a pivot pin 11, a cotter pin 12, and a cylindrical pin 13. The left support block 3 is connected to the left side plate 1, and the right support block 4 is connected to the right side plate 2. The insert block 10 is installed at the ends of the left side plate 1 and the right side plate 2 away from the threaded rod 5. The left threaded pin 7 is installed in the left side plate 1, and the right threaded pin 6 is installed in the right side plate 2. The threaded rod 5 is connected to the left threaded pin 7 and the right threaded pin 6. The rotating arm 8 is connected to the threaded rod 5. The handle 9 is inserted into the rotating arm 8. The pivot pin 11 is installed at the connection between the left support block 3 and the right support block 4.

[0020] The left support block 3 is attached to the left side plate 1 using the second hexagon socket head cap screw 16, and the right support block 4 is attached to the right side plate 2 using the second hexagon socket head cap screw 16. The insert block 10 is attached to the left side plate 1 and the right side plate 2 using the first hexagon socket head cap screw 15. The left threaded pin 7 is inserted into the left side plate 1, and the right threaded pin 6 is inserted into the right side plate 2. The threaded rod 5 is inserted into the right threaded pin 6 and the left threaded pin 7. The rotating arm 8 is fixed to the threaded rod 5 using the cylindrical pin 13. The handle 9 is inserted into the rotating arm 8. The pivot pin 11 is inserted into the left support block 3 and the right support block 4. The cotter pin 12 is inserted into the pivot pin 11. The handle 14 is welded to the left side plate 1 and the right side plate 2 respectively.

[0021] Furthermore, the threaded rod 5 is provided with a left-hand thread 18 and a right-hand thread 19 on both sides respectively. The left-hand threaded pin 7 is provided with an internal thread that mates with the left-hand thread 18, and the right-hand threaded pin 6 is provided with an internal thread that mates with the right-hand thread 19.

[0022] Furthermore, the left side plate 1 and the right side plate 2 are made of aluminum plates. Since the left side plate 1 and the right side plate 2 are the larger parts of the tool, using aluminum plates can effectively reduce the overall weight of the invention and make it easier for the operator to handle and use.

[0023] Furthermore, insert the insert 10 into the holes on both sides of the opening of the ring key 17, and rotate the handle 9 to drive the threaded rod 5 to rotate, thereby bringing the relative distance between the left side plate 1 and the right side plate 2 closer, so that the ring key 17 is tightened. After the ring key 17 is tightened, it can be placed in the spindle ring groove. At this time, the retaining ring is then heat-fitted. When the retaining ring enters the designated position, the present invention is disengaged from the ring key 17. The ring key 17 automatically springs open without external force and is stuck between the retaining ring and the spindle, thus completing the assembly.

[0024] During operation, the operator first inserts the insert block 10 into the holes on both sides of the opening of the ring key 17, connecting the tool with the ring key 17. Since the threaded rod 5 has a left-hand thread 18 and a right-hand thread 19 on both sides, and the left-hand thread pin 7 engages with the left-hand thread 18, and the right-hand thread pin 6 engages with the right-hand thread 19, when the operator rotates the handle 9 in one direction, the handle 9 drives the rotating arm 8. The rotating arm 8 drives the threaded rod 5 to rotate synchronously via the cylindrical pin 13. During the rotation of the threaded rod 5, the left-hand thread 18 and the right-hand thread 19 respectively drive the left-hand thread pin 7 and the right-hand thread pin 6 to move axially towards each other, thereby pulling the left side plate 1 and the right side plate 2 closer together simultaneously. The approach of the left side plate 1 and the right side plate 2 is converted into... The tension applied to both sides of the opening of the ring key 17 causes it to elastically deform and tighten, reducing its diameter. At this point, the ring key 17 can be easily inserted into the spindle annular groove. Subsequently, the heat-fitting process of the retaining ring is performed. After the retaining ring moves to the designated position, the handle 9 is rotated in the opposite direction to move the left side plate 1 and the right side plate 2 away, disengaging the insert block 10 from the ring key 17. The ring key 17 is no longer bound by external force and automatically springs open due to its own elasticity, restoring its diameter and thus firmly locking into the annular groove between the retaining ring and the spindle, completing the limiting assembly. Throughout the process, the cooperation between the pivot pin 11 and the cotter pin 12 ensures the relative positioning of the support block and the plate. The handle 14 facilitates the operator's grip and stabilizes the tool, ensuring that the tightening dimension is in place and that it will not slip or fall off, making it safe and reliable.

[0025] The specific embodiments of the present invention disclosed above are merely illustrative of the invention. These embodiments do not exhaustively describe all details, nor do they limit the invention to the specific embodiments described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention.

Claims

1. A tool for installing a key ring on a steam turbine generator, characterized in that: It includes a left side plate (1), a right side plate (2), a left support block (3), a right support block (4), a threaded rod (5), a right threaded pin (6), a left threaded pin (7), a rotating arm (8), a handle (9), an insert block (10), a pivot pin (11), a cotter pin (12), and a cylindrical pin (13). The left support block (3) is connected to the left side plate (1), and the right support block (4) is connected to the right side plate (2). The insert block (10) is installed on the left side plate (1) and the right side plate (2) respectively away from the threaded rod (5). The left threaded pin (7) is installed in the left side plate (1), and the right threaded pin (6) is installed in the right side plate (2). The threaded rod (5) is connected to the left threaded pin (7) and the right threaded pin (6). The rotating arm (8) is connected to the threaded rod (5). The handle (9) is inserted into the rotating arm (8). The pivot pin (11) is installed at the connection between the left support block (3) and the right support block (4).

2. The turbine generator installation ring key tool according to claim 1, characterized in that: The threaded rod (5) has a left-hand thread (18) and a right-hand thread (19) on both sides respectively.

3. The turbine generator installation ring key tool according to claim 2, characterized in that: The left-hand threaded pin (7) has an internal thread that mates with the left-hand thread (18), and the right-hand threaded pin (6) has an internal thread that mates with the right-hand thread (19).

4. The turbine generator installation ring key tool according to claim 1, characterized in that: The left side plate (1) and the right side plate (2) are made of aluminum plates.

5. The turbine generator installation ring key tool according to claim 1, characterized in that: The insert (10) is installed inside the ring key (17).

6. The turbine generator installation ring key tool according to claim 1, characterized in that: Handles (14) are installed on both the left side plate (1) and the right side plate (2).

7. A tool for installing a key ring on a steam turbine generator according to claim 6, characterized in that: The handle (14) is connected to the left side plate (1) and the right side plate (2) by welding.

8. The turbine generator installation ring key tool according to claim 1, characterized in that: The rotating arm (8) is connected to the threaded rod (5) via a cylindrical pin (13).

9. A tool for installing a key ring on a steam turbine generator according to claim 1, characterized in that: The left support block (3) is connected to the left side plate (1) by a second internal hexagonal head screw (16), and the right support block (4) is connected to the right side plate (2) by a second internal hexagonal head screw (16).

10. A tool for installing a key ring on a steam turbine generator according to claim 1, characterized in that: The insert (10) is installed on the left side plate (1) and the right side plate (2) respectively by the first internal hexagonal head screw (15).

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