Turning device for water-turbine generator set

Abstract

The utility model relates to a turning device for a water-turbine generator set. The power assisting device is composed of a power assisting rod, a thrust rod, an outer top plate, an inner top plate, reinforcing ribs, a fastening hole and a clamping ring. The turning gear can be applied to turning operation of small and medium-sized water-turbine generator sets, has the advantages of being low in overall weight, easy and convenient to install, easy to operate and high in controllability, and effectively solves the problems that when the small and medium-sized water-turbine generator sets are installed and overhauled, the turning gear needs to be repeatedly disassembled for many times, and the turning efficiency is high. Time and labor are wasted, and the universality is not high.

Description

Technical field:

[0001] The utility model relates to the field of hydro-generator sets, in particular to a turning device for hydro-generator sets. Background technology:

[0002] The main shaft of a hydroelectric generator set is large and requires very high standards. Inspecting the axis is both difficult and requires high-precision measurements. It is also the most crucial measurement for verifying the quality of the unit after installation. The final result of the turbine cranking will directly reflect the quality of the axis. If the unit axis is tilted or has broken lines, the rotating parts will inevitably produce swing and vibration during operation, directly affecting the unit's operating quality. If the axis error is too large, the centrifugal force of the rotating parts will inevitably place additional stress on the main shaft and bearings. The cyclical alternating forces will worsen operating conditions and shorten the operating life. Therefore, cranking is extremely important and must be carried out with full attention and diligence. Some small and medium-sized power plants have suffered serious consequences due to substandard cranking.

[0003] At present, there are many structural forms of unit cranking devices, and their effects vary greatly when used in cranking different types of units. Therefore, the cranking device should be selected according to the unit structure to avoid poor cranking effect and poor unit axis consistency, which will affect the safe and stable operation of the unit. The cranking device of the utility model can be applied to small and medium-sized hydro-turbine generator sets. Summary of the invention:

[0004] The purpose of the utility model is to provide a device for turning a hydro-turbine generator set, so as to solve the problem that the turning device needs to be repeatedly disassembled during the installation and maintenance of small and medium-sized hydro-turbine generator sets, which is time-consuming and labor-intensive and has low versatility. The technical solution is as follows: the device is composed of a power rod, a thrust rod, an outer top plate, an inner top plate, reinforcement ribs, a handle hole and a clamping ring. The power rod is connected to the thrust rod by a thread. The thrust rod is welded to one side of the outer top plate in the four directions of +X, -X, +Y and -Y. The outer top plate is connected to the inner top plate by welding. Reinforcement ribs are welded to the inner side of the outer top plate in the four directions of +X, -X, +Y and -Y. Six handle holes are machined evenly around the outer top plate. A clamping ring is machined 360° around the inner 1 / 4 of the axial direction. After the whole is assembled, the device for turning a hydro-turbine generator set is formed.

[0005] In the above-mentioned hydro-generator winch device, the handle hole is a through hole and is machined with threads.

[0006] Compared with other types of winching devices for hydro-turbine generator sets, the advantages of the present invention are: low overall weight, simple and convenient installation, easy operation, and strong controllability. It effectively solves the problem that the winching device needs to be disassembled repeatedly during the installation and maintenance of small and medium-sized hydro-turbine generator sets, which is time-consuming, labor-intensive and not very versatile.

[0007] Working principle:

[0008] After positioning and connecting the clamping ring on the inner top plate with the thrust head of the turbine generator, align the 6 engagement holes on the outer top plate with the threaded holes on the thrust head and connect them with bolts. After connecting the 4 assist rods with the thrust rods with threads, adjust the axial horizontal balance of the winching device, tighten the engagement bolts between the thrust head and the outer top plate again, and have 4 people apply circumferential force to each thrust rod to push the winching device, so that the winching device drives the thrust head, thereby driving the entire rotating component to rotate circumferentially at low speed, achieving the effect of manual winching. Description of the drawings:

[0009] Figure 1 The figure is a front view of a device for turning a hydro-generator set.

[0010] Figure 2 The figure is a side view of a device for turning a hydro-generator set.

[0011] Explanation of the markings in the figure: 1-Assist rod, 2-Thrust rod, 3-Outer top plate, 4-Inner top plate, 5-Reinforcement rib, 6-Handle hole, 7-Snap ring. Specific implementation method:

[0012] like Figure 1 、 Figure 2 As shown, a device for turning a hydro-turbine generator set is composed of a power-assisting rod 1, a thrust rod 2, an outer top plate 3, an inner top plate 4, a reinforcing rib 5, a handle hole 6 and a snap ring 7. The power-assisting rod 1 is connected to the thrust rod 2 by a thread. The thrust rod 2 is welded to one side of the outer top plate 3 in the four directions of +X, -X, +Y, and -Y. The outer top plate 3 is connected to the inner top plate 4 by welding. Reinforcing ribs 5 are welded inside the outer top plate 3 in the four directions of +X, -X, +Y, and -Y. The outer top plate 3 is machined with 6 handle holes 6 evenly distributed in the circumference. The handle holes 6 are through holes and are machined with threads. The inner top plate 4 is machined with a snap ring 7 in a 360° circumferential direction at the inner 1 / 4 along the axial direction. After the overall assembly is completed, a device for turning a hydro-turbine generator set is formed.

[0013] Finally, the scope of protection of the present invention is not limited to the above-described embodiments. Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the scope and spirit of the present invention. Provided such modifications and variations fall within the scope of the claims and their equivalents, the present invention is intended to encompass such modifications.

Claims

1. A device for turning a turbine generator set, characterized by: The invention comprises a power-assisting rod (1), a thrust rod (2), an outer top plate (3), an inner top plate (4), a reinforcing rib (5), a handle hole (6) and a snap ring (7). The power-assisting rod (1) is connected to the thrust rod (2) by a thread, the thrust rod (2) is welded to one side of the outer top plate (3) in four directions of +X, -X, +Y and -Y, the outer top plate (3) is connected to the inner top plate (4) by welding, and a reinforcing rib (5) is welded inside the outer top plate (3) in four directions of +X, -X, +Y and -Y, six handle holes (6) are machined evenly in the circumferential direction of the outer top plate (3), and a snap ring (7) is machined in the circumferential direction of 360 degrees at the inner 1 / 4 of the axial direction of the inner top plate (4). After the overall assembly is completed, a device for turning a hydro-turbine generator set is formed.

2. A hydro-generator turning device according to claim 1, characterized in that: The handle hole (6) is a through hole and is machined with threads.

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