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KR-20260067178-A - Steam turbine and generator shaft alignment measuring device

KR20260067178AKR 20260067178 AKR20260067178 AKR 20260067178AKR-20260067178-A

Abstract

The present invention relates to a steam turbine and generator shaft alignment measuring device capable of aligning the steam turbine shaft even in situations where shaft alignment is impossible due to a long distance between the steam turbine and the generator connection part. The feature of the present invention includes a connecting flange (100) connected to a flange (11) of a generator connection part (10), a fixed pipe (200) with one end fixed to the connecting flange (100), and a mounting bracket (300) on which a measuring part (30) for measuring a flange (21) of a steam turbine (20) is mounted and provided at the other end of the fixed pipe (200).

Inventors

  • 박종경
  • 이찬웅
  • 이광호

Assignees

  • 한국중부발전(주)

Dates

Publication Date
20260512
Application Date
20241105

Claims (6)

  1. A connecting flange (100) connected to the flange (11) of the generator connection part (10), and A fixed pipe (200) having one end fixed to a connecting flange (100) and A steam turbine and generator shaft alignment measuring device characterized by including a mounting bracket (300) on which a measuring part (30) for measuring the flange (21) of a steam turbine (20) is mounted and which is provided at the other end of a fixed pipe (200).
  2. In claim 1, The stand (300) is Fixed to a fixed pipe (200) and a mounting plate (310), A mounting block (320) that is detachably fixed to a mounting plate (310), and A mounting shaft (330) fixed to a mounting block (320), and An auxiliary shaft (340) for connecting to a mounting shaft (330), and A shaft connecting part (350) that connects an auxiliary shaft (340) to a mounting shaft (330) and A steam turbine and generator shaft alignment measuring device characterized by including a measuring fixing part (360) that fixes the measuring part (30) to a mounting shaft (330) or an auxiliary shaft (340).
  3. In claim 2, The mounting plate (310) is made of a metal plate, and A steam turbine and generator shaft alignment measuring device characterized by the mounting block (320) being composed of magnets.
  4. In claim 2, A steam turbine and generator shaft alignment measuring device characterized by the mounting plate (310) having concentric scales (311) formed thereon.
  5. In claim 2, The shaft connection part (350) is A connecting block (351) having through holes (351a) through which the mounting shaft (330) and the auxiliary shaft (340) each pass so as to face in different directions, and a connecting screw tap (351b) formed to communicate to the side of the through holes (351a). A steam turbine and generator shaft alignment measuring device characterized by including a fixing bolt (352) that is screw-coupled to the connecting screw tap (351b) of the connecting block (351) and fixes a mounting shaft (330) or auxiliary shaft (340) that passes through the through hole (351a).
  6. In claim 2, The measuring fixing part (360) A measuring fixing block (361) in which a measuring insertion hole (361a) is formed so that a mounting shaft (330) or an auxiliary shaft (340) is inserted while the measuring part (30) is fixed, and a measuring screw tap (361b) is formed to communicate with the side of the measuring insertion hole (361a). A steam turbine and generator shaft alignment measuring device characterized by including a measuring bolt (362) that fixes a mounting shaft (330) or an auxiliary shaft (340) which is screw-coupled to a measuring screw tap (361b) of a measuring fixing block (361) and inserted into a measuring insertion hole (361a).

Description

Steam turbine and generator shaft alignment measuring device The present invention relates to a steam turbine and generator shaft alignment measuring device capable of accurately measuring the alignment state of a steam turbine shaft even when the distance between the steam turbine and the generator connection part is long. Generally, power plants perform shaft alignment to prevent vibration in the turbine and generator when disassembling and reassembling the shaft-generator connection for steam turbine and generator maintenance. Before performing shaft alignment, a measuring device is installed at the generator connection of the fixed pipe of the steam turbine or generator, and the moving axis of the measuring device is rotated 90° to take a measurement. Then, the base of the fixed pipe of the steam turbine or generator is moved to take repeated measurements to bring it within the desired standard value. When the distance between the dual steam turbine and the generator connection is so great that measurement is impossible, there are difficulties that result in massive losses during power plant operation, such as equipment reliability issues and construction delays. The background technology of the present invention is registered with the Korean Intellectual Property Office as Patent Publication No. 10-0900896 on May 28, 2009. FIG. 1 is a perspective view showing a steam turbine and generator shaft alignment measuring device according to an embodiment of the present invention. FIG. 2 is a side view showing a side of the present invention. FIG. 3 is a partial cross-sectional view showing the separated state of a fixed pipe applied to the present invention. FIG. 4 is a partial cross-sectional view showing the combined state of a fixed pipe applied to the present invention. FIG. 5 is an exploded perspective view showing the exploded state of the present invention. FIG. 6 is an exploded perspective view showing the mounting bracket of the present invention. Fig. 7 is a side view showing the side of Fig. 6. FIG. 8 is a perspective view showing the use state of the present invention. Hereinafter, the present invention will be examined in detail with reference to the attached drawings. The present invention is susceptible to various modifications and may take various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the invention to the specific disclosed forms, and it should be understood that the invention includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention. Similar reference numerals have been used for similar components in the description of each drawing. In the accompanying drawings, the dimensions of structures are depicted enlarged or reduced to the actual size to ensure clarity of the invention or to allow for a schematic understanding of the configuration. As illustrated in FIGS. 1, 2 and 5, a steam turbine and generator shaft alignment measuring device according to one embodiment of the present invention includes a connecting flange (100) connected to a flange (11) of a generator connection part (10), a fixed pipe (200) with one end fixed to the connecting flange (100), and a mounting bracket (300) on which a measuring part (30) for measuring the flange (21) of a steam turbine (20) is mounted and provided at the other end of the fixed pipe (200). As illustrated in FIG. 5, first, the generator connection part (10) is connected to the flange (21) of the steam turbine (20) to transmit the rotational force of the steam turbine (20) to a generator (not shown). This generator connection part (10) may be formed to include a rod gear that rotates the flange (11) at a certain angle. Thus, the flange (11) can be rotated in the forward or reverse direction through the rod gear. The steam turbine (20) is connected to the flange (11) of the generator connection part (10) through a coupling (not shown) to the flange (21). At this time, the flange (11) and the flange (21) are connected through the coupling. Therefore, when the steam turbine (20) is operated and rotates the flange (21), the flange (11) of the generator connection part (10) connected through the coupling rotates. Consequently, since the flange (11) of the generator connection part (10) rotates, power is generated from the generator (not shown). In addition, when the load gear of the generator connection part (10) is rotated, the flange (11) and flange (21) connected through the coupling rotate together. In addition, the steam turbine (20) has a flange (21) connected to a steam turbine base (not shown) via an axle, so when the steam turbine base is moved, the flange (21) also moves together. Also, if the axle of the steam turbine (20) is tilted, the flange (21) connected to the axle is also tilted. As illustrated in FIGS. 1 and 6, the measuring unit (30) may be configured as a dial gauge for measuring the