Central frame of steam turbine

Abstract

The utility model discloses a steam turbine center frame in the technical field of steam turbine installation, and the steam turbine center frame comprises two adjusting mechanisms and two same supporting frames, the two supporting frames are fixed to the ground, and the two supporting frames are located at the two ends of the steam turbine installation position correspondingly; and the two adjusting mechanisms are fixedly mounted at the top of the supporting frame correspondingly, and the adjusting mechanisms are used for straightening the primarily centered steel wire and driving the steel wire to move in the horizontal direction and the vertical direction. According to the scheme, the problem that positioning is troublesome when an existing turbine is initially centered is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbine installation, and particularly relates to a steam turbine centering frame. Background Art

[0002] A steam turbine is a rotary power machine that converts the thermal energy of steam into mechanical energy, and is widely used in power plants, industrial power, ship propulsion and other fields.

[0003] When a steam turbine is installed, finding the center is a crucial step, which involves ensuring the alignment of the axes between the various rotors of the steam turbine to achieve the best mechanical performance and efficiency. The main purpose of finding the center is to form a smooth and continuous center line when the rotor shaft system of the steam turbine is running, ensure that the load distribution of each bearing meets the design requirements, reduce vibration, avoid friction between components, and ensure the reliability and long life of the equipment.

[0004] The current method for finding the center of a steam turbine is to first use a total station to determine the reference plane, and then use a steel wire to straighten it. The two ends of the steel wire are fixed on two brackets, so as to achieve the purpose of initially finding the center. Then, during the installation process of the steam turbine, tools such as dial indicators are used to accurately determine the centers of components such as the bearing seat and rotor of the steam turbine. However, in the current method of initially finding the center, after determining the reference plane, when fixing the steel wire, if there is an error in the fixing position of the steel wire, the steel wire needs to be disassembled, realigned with the determined reference plane, and then fixed again. This method of initially finding the center of the steam turbine has troublesome positioning operations and large errors. Summary of the Utility Model

[0005] The utility model aims to provide a steam turbine centering frame to solve the problem of troublesome positioning during the initial center finding of a steam turbine.

[0006] To solve the above technical problems, the utility model provides the following technical solution: A steam turbine centering frame includes two adjusting mechanisms and two identical support frames. The two support frames are fixed on the ground, and the two support frames are respectively located at both ends of the steam turbine installation position;

[0007] The two adjusting mechanisms are respectively fixedly installed on the tops of the support frames. The adjusting mechanism is used to straighten the steel wire for initially finding the center, and drive the steel wire to move in the horizontal direction and in the vertical direction.

[0008] Further, the support frame includes two vertical beams, and the two vertical beams are fixedly connected to the ground at intervals by screws. The tops of the two vertical beams are fixedly connected with the same horizontal cross beam.

[0009] Further, the adjustment mechanism includes two vertical support rods, which are fixedly spaced on the upper surface of the cross beam. The tops of the two support rods are fixedly connected to the same cross bar. Vertical sliding chutes are provided on both of the two support rods, and the same horizontal adjustment rod is slidably connected in the two chutes. The adjustment rod is used to fix the steel wire and move the steel wire horizontally.

[0010] Further, the adjustment rod is provided with threads, and a moving ring is threadedly connected to the adjustment rod. A card slot for clamping the steel wire is provided on the circumference of the moving ring.

[0011] Further, two limiting rings are threadedly connected to the adjustment rod, and the two limiting rings are respectively located on both sides of the moving ring.

[0012] Further, vertical movable rods are respectively sleeved at both ends of the adjustment rod. The tops of the two movable rods pass upward through the cross bar and are located above the cross bar. Knobs are threadedly connected to both of the two movable rods.

[0013] Further, the bottoms of the two vertical beams of the same support frame are fixedly connected to the same horizontal stabilizing rod, and a marking plate is fixedly connected to the stabilizing rod.

[0014] Further, a vertically arranged reel is rotatably connected to the stabilizing rod of one of the support frames, and the steel wire is wound around the reel.

[0015] The beneficial effects of the present utility model:

[0016] 1. After using the total station to determine the reference plane with this solution, the marking plates on the two support frames mark and record the positions at both ends of the reference plane. In this way, after the steel wire is clamped in the card slot, the movement of the moving ring is stopped until the steel wire is directly above the marked position of the marking plate by moving the moving ring horizontally. In this way, after determining the reference plane, even if the position of the steel wire for the initial center finding is offset, the position of the steel wire can be adjusted by the moving ring to make it align with the reference plane, and the operation is convenient and fast.

[0017] 2. The position of the reference plane is marked and recorded by the marking plate. In this way, when the steel wire is initially centered, if the position of the steel wire is not directly above the mark of the marking plate, the error in the initial centering of the steel wire can be immediately found, and then the position of the steel wire can be adjusted in time, and the error can be found quickly and in time. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of a steam turbine center frame of the present utility model;

[0019] Figure 2 is Figure 1 the schematic structural diagram of the front view of the support frame and the adjustment mechanism in

[0020] Figure 3 It is a schematic structural diagram of the adjusting rod in the embodiment. Specific implementation manners

[0021] The following is a further detailed description through specific implementation manners:

[0022] The reference numerals in the accompanying drawings of the specification include: knob 1, cross bar 2, movable rod 3, chute 4, support rod 5, card slot 6, moving ring 7, cross beam 8, vertical beam 9, stabilizing rod 10, marking plate 11, reel 12, steel wire 13, limiting ring 14, adjusting rod 15.

[0023] The embodiment is basically as shown in Figure 1 , Figure 2 and Figure 3 shown:

[0024] A steam turbine center frame includes two adjusting mechanisms and two identical support frames. The two support frames are fixed on the ground, and the two support frames are respectively located at both ends of the steam turbine installation position, and the two support frames are in the axial direction of the central axis of the steam turbine. The support frame includes two vertical beams 9. The two vertical beams 9 are fixedly connected to the ground at intervals by screws. The tops of the two vertical beams 9 are fixedly connected with the same horizontal cross beam 8. The bottoms of the two vertical beams 9 are welded with the same horizontal stabilizing rod 10. A horizontal marking plate 11 is fixedly connected to the middle of the stabilizing rod 10. A vertically arranged reel 12 is rotatably connected to the stabilizing rod 10 of one of the support frames, and the steel wire 13 is wound around the reel 12.

[0025] The two adjusting mechanisms are respectively fixedly installed on the top of the support frame. The adjusting mechanism includes two vertical support rods 5. The two support rods 5 are fixedly spaced on the upper surface of the cross beam 8. The tops of the two support rods 5 are fixedly connected with the same cross bar 2; vertical chutes 4 are provided on both of the two support rods 5. The same horizontal adjusting rod 15 is slidably connected in the two chutes 4. The adjusting rod 15 is provided with threads. A moving ring 7 is threadedly connected to the adjusting rod 15. A card slot 6 for clamping the steel wire 13 is provided on the circumference of the moving ring 7. Two limiting rings 14 are threadedly connected to the adjusting rod 15. The two limiting rings 14 are respectively located on both sides of the moving ring 7; vertical movable rods 3 are respectively sleeved at both ends of the adjusting rod 15. The tops of the two movable rods 3 pass upward through the cross bar 2 and are located above the cross bar 2. Knobs 1 are threadedly connected to both of the two movable rods 3.

[0026] The specific implementation process is as follows:

[0027] In use, first determine the reference plane with a total station, then mark and record the positions at both ends of the reference plane on the marking plates 11 of the two support frames. Then, pull out the steel wire 13 wound in the reel 12. The steel wire 13 moves vertically upward and then bypasses the upper surface of the moving ring 7 and is located in the card slot 6. At this time, the steel wire 13 changes from the vertical direction to the horizontal direction, and then extends to the other support frame, and then bypasses the upper surface of the moving ring 7 on this support frame and is located in the card slot 6 of the moving ring 7. At this time, the steel wire 13 changes from the horizontal direction to vertically downward, and then fix the molten steel on the stabilizing rod 10. When the horizontal position of the steel wire 13 needs to be adjusted, rotate the two moving rings 7 respectively. When the moving ring 7 moves, it drives the steel wire 13 to move synchronously. When the moving ring 7 drives the steel wire 13 to move to directly above the mark on the marking book, stop rotating the moving ring 7, and then rotate the limiting rings 14 on both sides of the moving ring 7 to make the limiting rings 14 gradually approach the moving ring 7 until the limiting rings 14 hold the moving ring 7 against movement to prevent the moving ring 7 from moving after the position is determined.

[0028] When the position height of the steel wire 13 needs to be adjusted, rotate the two knobs 1 above each cross bar 2 synchronously. Since the knob 1 is threadedly connected to the movable rod 3, when the knob 1 rotates, the knob 1 uses the cross bar 2 as a support to pull the two movable rods 3 upward. When the movable rod 3 moves upward, it drives the adjusting rod 15 to move upward in the chute 4, thereby driving the moving ring 7 to move upward synchronously. When it is necessary to lower the height of the steel wire 13, rotate the two knobs 1 on the cross bar 2 in the reverse direction synchronously.

Claims

1. A steam turbine center frame, characterized in that: It includes two adjusting mechanisms and two identical support frames. The two support frames are fixed on the ground, and the two support frames are respectively located at both ends of the installation position of the steam turbine. The two adjusting mechanisms are respectively fixedly installed on the tops of the support frames. The adjusting mechanism is used to straighten the wire for initial alignment and drive the wire to move in the horizontal direction and in the vertical direction. The support frame includes two vertical beams. The two vertical beams are fixedly connected to the ground at intervals by screws, and the tops of the two vertical beams are fixedly connected with the same horizontal cross beam. The adjusting mechanism includes two vertical support rods. The two support rods are fixedly arranged on the upper surface of the cross beam at intervals. The tops of the two support rods are fixedly connected with the same cross bar. Vertical sliding chutes are provided on the two support rods, and the same horizontal adjusting rod is slidably connected in the two chutes. The adjusting rod is used to fix the wire and move the wire in the horizontal direction.

2. The centering bracket of a steam turbine according to claim 1, characterized in that: Threads are provided on the adjusting rod, and a moving ring is threadedly connected to the adjusting rod. A card slot for clamping the wire is provided on the circumference of the moving ring.

3. The turbine center frame according to claim 2, characterized in that: Two limiting rings are threadedly connected to the adjusting rod, and the two limiting rings are respectively located on both sides of the moving ring.

4. A turbine center frame according to claim 3, characterized in that: Vertical movable rods are respectively sleeved at both ends of the adjusting rod. The tops of the two movable rods pass upward through the cross bar and are located above the cross bar. Knobs are threadedly connected to the two movable rods.

5. A turbine center frame according to claim 4, characterized in that: The bottoms of the two vertical beams of the same support frame are fixedly connected with the same horizontal stabilizing rod, and a marking plate is fixedly connected to the stabilizing rod.

6. The centering frame of a steam turbine according to claim 5, characterized in that: A vertically arranged reel is rotatably connected to the stabilizing rod of one of the support frames, and the wire is wound around the reel.

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