A turbine rotor angle visualisation device

Abstract

The utility model provides a kind of steam turbine rotor angle visual device, belong to steam turbine dynamic balancing test equipment technical field.The device is by two surfaces of round plate respectively as identification surface and sticking surface;The identification surface is marked with a plurality of parallel lines, and the parallel line passes through the center of the identification surface, and a plurality of pairs of adjacent parallel lines are marked with different marks respectively;The sticking surface is fixed on the shaft end surface of the head of steam turbine or exciter, and the design of cooperating with moving rotating assembly and clamping assembly, solve the existing method of correcting steam turbine dynamic imbalance, because the field of view of balancing block mounting hole is narrow, hole position contrast is difficult to misalign, installation is time-consuming and the angle is easy to deviate.The device includes a round plate, two surfaces are identification surface and sticking surface respectively;Identification surface is marked with a plurality of parallel lines, and the parallel line passes through the center of the identification surface, and a plurality of pairs of adjacent parallel lines are marked with different marks respectively;The sticking surface is fixed on the shaft end surface of the head of steam turbine or exciter.

Description

Technical Field

[0001] This utility model belongs to the technical field of steam turbine dynamic balancing test equipment, and in particular relates to a steam turbine rotor angle visualization device. Background Technology

[0002] In the installation process of steam turbines in coal-fired power plants, eliminating high-speed dynamic imbalance of the steam turbine is crucial for the safe operation of the unit, and correcting dynamic imbalance is a key step in eliminating dynamic imbalance.

[0003] The existing method for correcting turbine mechanical imbalance involves clearly marking the position of the turbine keyway on the exposed part of the turbine generator rotor, using this mark as the zero point, and performing reverse indexing on the rotor's main shaft to establish a coordinate system in advance for the balance bolts (i.e., balance blocks) to be applied to the rotor. This ensures that the number and number of balance block mounting holes on the last-stage moving blade hub of the low-pressure rotor correspond one-to-one with the exposed angular position of the rotor. The method uses electric turning gear as the main method and manual turning gear as an auxiliary method to align the balance holes of the balance blocks to be added to the rotor with the balance block mounting holes of the low-pressure outer cylinder.

[0004] The above methods are inefficient and time-consuming because the balance block mounting holes have a narrow field of view, making hole alignment difficult and time-consuming, and the angle is prone to deviation. In addition, the rotor inertia is large when the electric trolley is operated, which can easily cause hole position deviation. Manual trolley operation is less efficient and time-consuming. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a turbine rotor angle visualization device to solve the problems of existing methods for correcting turbine motor imbalance, which have narrow field of view of balance block mounting holes, difficulty in hole position comparison and easy misalignment, time-consuming installation and easy angle deviation.

[0006] To achieve the above and other related objectives, this utility model provides a turbine rotor angle visualization device, comprising:

[0007] A circular plate has two surfaces: a marking surface and a bonding surface. The marking surface is marked with multiple bisectors, which pass through the center of the marking surface. Each pair of adjacent bisectors is marked with a different symbol. The bonding surface is fixed to the end face of the turbine head or the exciter.

[0008] A clamping assembly clamps the outer circumference of the circular plate, with the marking surface facing the clamping assembly;

[0009] The moving and rotating component drives the clamping component to move linearly along the central axis of the circular plate, and drives the clamping component to rotate about the central axis of the circular plate.

[0010] Optionally, the clamping assembly includes a plurality of clamping hook components;

[0011] The clamping component includes a fixed frame, which is fixedly connected to the movable rotating assembly. A T-shaped rod is installed inside the fixed frame. The horizontal bar of the T-shaped rod is slidably engaged with the fixed frame. The tail end of the vertical bar of the T-shaped rod passes through the fixed frame and is fixedly connected to a hook.

[0012] A spring is fitted onto the vertical rod, with one end of the spring abutting against the horizontal rod and the other end of the spring abutting against the inside of the fixed frame;

[0013] Each clamping component has a hook that engages with the outer circumference of the circular plate from different directions.

[0014] Optionally, there are three clamping hooks, which are evenly distributed on the same circumference.

[0015] Optionally, the clamping assembly further includes a positioning plate, which is circular and has a diameter smaller than that of the circular plate. The positioning plate is fixed to the movable rotating assembly, and the fixing frame is fixed to the positioning plate.

[0016] Optionally, the movable rotating assembly includes a fixed track, on which a slide table is slidably mounted, and a threaded hole is provided on the slide table, into which a threaded rod is installed;

[0017] One end of the threaded rod is fixed to the clamping assembly, and the other end of the threaded rod is fixed to a handle.

[0018] Optionally, the movable rotating assembly further includes a stabilizing platform, on which the fixed track is fixedly mounted.

[0019] Optionally, the marking surface is marked with 32 equally divided lines.

[0020] Optionally, the markings between adjacent dividing lines are Arabic numerals.

[0021] Optionally, the circular plate is cardboard, and the bonding surface is fixed to the end face of the turbine head shaft or the exciter by applying adhesive.

[0022] As described above, the turbine rotor angle visualization device of this utility model has at least the following beneficial effects:

[0023] This turbine rotor angle visualization device uses a circular plate with two surfaces: a marking surface and a bonding surface. The marking surface is marked with multiple equally spaced lines passing through its center, and each pair of adjacent lines is marked with a different symbol. The bonding surface is fixed to the end face of the turbine's shaft or the exciter. This design standardizes the marking methods for gaps and angles in turbine rotor dynamic balancing tests without altering existing equipment. It changes the previous practice of manual marking, which lacked standards and resulted in large angle deviations. The visualized circular plate unifies the error positions of different operators.

[0024] Simultaneously, the clamping assembly clamps the outer circumference of the circular plate, with the marked surface facing the clamping assembly; the moving and rotating assembly drives the clamping assembly to move the circular plate linearly along its central axis, gradually bringing the circular plate closer to the shaft end face of the turbine head or the exciter; the moving and rotating assembly drives the clamping assembly to rotate the circular plate about its central axis, adjusting the angle of the circular plate so that a designated bisector on the circular plate aligns with the keyway groove or boss of the turbine rotor, and this position is determined as the zero-degree position; generally, during turbine rotor dynamic balancing tests, a speed measuring probe is installed above the keyway groove or boss of the turbine rotor, so the... Align the four probes with a predetermined bisector line; after alignment, fix the circular plate and retract the moving and rotating components and clamping components; relevant test personnel issue start and stop commands to the turning operator via walkie-talkie; because the turning operator can quickly determine the position through different marks on the circular plate, the inertial displacement of the electric turning car can be calculated in advance to avoid hole position deviation, and then supplemented by manual turning fine adjustment, and finally the correct position of the counterweight block installation hole, i.e., the angle, can be quickly determined based on the test results; this solves the problem of existing methods for correcting turbine motor imbalance, which have narrow field of vision for counterweight installation holes, difficulty in hole position comparison, easy misalignment, time-consuming installation, and easy angle deviation. Attached Figure Description

[0025] Figure 1 The diagram shown is a schematic diagram of a turbine rotor angle visualization device according to this utility model.

[0026] Figure 2 The diagram shows the installation position of the circular plate of this utility model.

[0027] Figure 3 The diagram shown is a schematic of the circular plate of this utility model.

[0028] Figure 4 The diagram shown is a schematic diagram of the hook component of this utility model.

[0029] Figure 5 The diagram shown is an exploded view of the movable rotating component of this utility model.

[0030] Component designation explanation

[0031] Circular plate 1, marking surface 11, bonding surface 12, dividing line 13, mark 14;

[0032] Clamping assembly 2, hook component 21, fixing frame 211, T-shaped rod 212, hook 213, spring 214, positioning plate 22;

[0033] The movable rotating component 3, the fixed track 31, the slide table 32, the threaded hole 33, the threaded rod 34, the handle 35, and the stable platform 36. Detailed Implementation

[0034] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0035] Please see Figures 1 to 5 It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0036] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0037] Please see Figure 1 This utility model provides a turbine rotor angle visualization device, comprising:

[0038] like Figures 1 to 3 The circular plate 1 shown has two surfaces: a marking surface 11 and a bonding surface 12. The marking surface 11 has multiple dividing lines 13, each passing through the center of the marking surface 11. Each pair of adjacent dividing lines 13 is marked with a different symbol 14. The bonding surface 12 is fixed to the shaft end face of the turbine head or to the exciter. It should be explained that... Figure 2HP represents the high-pressure cylinder, IP represents the medium-pressure cylinder, LP represents the low-pressure cylinder, and GEN represents the generator. The design of this circular plate 1 standardizes the marking method of the void and angle in the dynamic balancing test of the turbine rotor without changing the existing equipment. It changes the previous manual marking method, which had no standard to follow and had large angle deviations. Through the visual circular plate 1, the error positions of different operators are unified.

[0039] like Figure 1 The clamping assembly 2 shown clamps the outer circumference of the circular plate 1, and the marking surface 11 faces the clamping assembly 2.

[0040] like Figure 1 The movable rotating component 3 shown drives the clamping component 2 to move linearly along the central axis of the circular plate 1, and drives the clamping component 2 to rotate about the central axis of the circular plate 1.

[0041] like Figures 1 to 3 As shown, specifically regarding the circular plate 1, the moving and rotating assembly 3 drives the clamping assembly 2 to move the circular plate 1 linearly along its central axis, gradually bringing it closer to the turbine head shaft end face or exciter. The moving and rotating assembly 3 drives the clamping assembly 2 to rotate the circular plate 1 about its central axis, adjusting its angle so that a designated bisector 13 on the circular plate 1 aligns with the keyway groove or boss of the turbine rotor, and this position is determined as the zero-degree position. Generally, during turbine rotor dynamic balancing tests, a speed measuring probe is installed above the keyway groove or boss of the turbine rotor, hence the designated bisector 13... Align the dividing line 13 with the four probes; after alignment, fix the circular plate 1, and retract the moving rotating component 3 and clamping component 2; the relevant test personnel issue start and stop commands to the turning operator via walkie-talkie; because the turning operator can quickly determine the position through the different marks 14 on the circular plate 1, the inertial displacement of the electric turning car can be calculated in advance to avoid hole position deviation, and then supplemented by manual turning fine adjustment, and finally the correct position of the counterweight installation hole, i.e., the angle, can be quickly determined according to the test results; this solves the problem of existing methods for correcting turbine motor imbalance, because the field of view of the counterweight installation hole is narrow, the hole position is difficult to match and is easy to be misaligned, the installation is time-consuming and the angle is easy to deviate.

[0042] Meanwhile, compared to the design of marking directly on a piece of paper, the design of using the moving and rotating component 3 and the clamping component 2 to install the circular plate 1 in the designated position avoids the problem that the paper is prone to wrinkling, which can easily lead to uneven installation and cause large errors.

[0043] In another implementation, please refer to Figure 1 and Figure 4The clamping assembly 2 includes multiple clamping hook components 21; each clamping hook component 21 includes a fixed frame 211, which is fixedly connected to the moving and rotating assembly 3. A T-shaped rod 212 is installed inside the fixed frame 211. The horizontal bar of the T-shaped rod 212 is slidably engaged with the fixed frame 211, and the tail end of the vertical bar of the T-shaped rod 212 passes through the fixed frame 211 and is fixedly connected to a hook 213. A spring 214 is fitted on the vertical bar. One end of the spring 214 abuts against the horizontal bar, and the other end of the spring 214 abuts against the interior of the fixed frame 211. Each clamping hook component 211 has multiple clamping hook components 211. The hooks 213 of the hook component 21 clamp the outer circumference of the circular plate 1 from different directions. When it is necessary to change the hook 213 to clamp the outer circumference of the circular plate 1, the worker pulls the buckle, and the T-shaped rod 212 slides in the fixed frame 211. The clamping hook component 21 is not only simple in structure and easy to use, but also can reliably clamp the outer circumference of the circular plate 1. After the circular plate 1 is fixed, the worker can slightly pry the hook 213, and the hook 213 can disengage from the outer circumference of the circular plate 1. The clamping component 2 can then smoothly leave the installation position of the circular plate 1.

[0044] In another implementation, please refer to Figure 1 There are three clamping hook components 21, which are evenly distributed on the same circumference; this arrangement requires the fewest number of clamping hook components 21 while ensuring secure clamping.

[0045] In another implementation, please refer to Figure 1 The clamping assembly 2 also includes a positioning plate 22, which is circular and has a diameter smaller than that of the circular plate 1, so as to facilitate the clamping hook component 21 to clamp the circular plate 1 after being installed on the positioning plate 22. The positioning plate 22 is fixedly connected to the moving and rotating assembly 3, and the fixing frame 211 is fixedly connected to the positioning plate 22. The design of the positioning plate 22 not only provides a reliable installation position for the clamping hook component 21, but also makes it easier for the staff to find the correct installation position of the circular plate 1.

[0046] In another implementation, please refer to Figure 1 and Figure 5 The movable rotating component 3 includes a fixed track 31, on which a slide table 32 is slidably mounted. The slide table 32 has a threaded hole 33, in which a threaded rod 34 is installed. One end of the threaded rod 34 is fixed to the clamping component 2, and the other end of the threaded rod 34 is fixed to a handle 35. When the circular plate 1 needs to be installed, the operator first places the movable rotating component in a roughly suitable position, and then pushes the slide table 32 to slide on the fixed track 31 by using the handle 35 to send the circular plate 1 to a position approximately close to the end face of the machine head or the exciter. Then, the operator rotates the handle 35 to make a fine adjustment to the front and back distance of the circular plate 1. At the same time, the rotation angle of the circular plate 1 is also adjusted so that the designated bisector 13 is aligned with the speed measuring probe.

[0047] In another implementation, please refer to Figure 1 and Figure 5 The moving and rotating assembly 3 also includes a stabilizing platform 36, on which the fixed track 31 is fixedly installed; this improves the stability of the device during operation.

[0048] In another implementation, please refer to Figure 1 and Figure 3 The marking surface 11 has 32 equally divided lines 13, which is applicable to the steam turbine in a 300MW coal-fired unit. Of course, the designer can design the number of equally divided lines 13 according to specific needs.

[0049] In another implementation, please refer to Figure 3 The marks 14 between adjacent dividing lines 13 are Arabic numerals. Compared to other marks 14, Arabic numerals are obviously easier for staff to identify.

[0050] In other implementations, such as Figure 1 As shown, the circular plate 1 is a cardboard, and the bonding surface 12 is fixed to the end face of the turbine head shaft or the exciter by applying glue. Cardboard is easy to obtain and lightweight, and will not have too much impact on the turbine. Glue is a convenient way to fix cardboard.

[0051] In summary, this invention utilizes a circular plate 1 with two surfaces: a marking surface 11 and a bonding surface 12. The marking surface 11 is marked with multiple bisectors 13, each passing through its center. Adjacent bisectors 13 are each marked with a different symbol 14. The bonding surface 12 is fixed to the end face of the turbine head shaft or the exciter. Combined with the design of the moving and rotating assembly 3 and the clamping assembly 2, this invention solves the problems of existing methods for correcting turbine motor imbalance, which suffer from narrow viewing angles at the balance block mounting holes, difficulty in hole alignment leading to misalignment, time-consuming installation, and easy angle deviation. Therefore, this invention effectively overcomes the shortcomings of existing technologies and has high industrial application value.

[0052] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A turbine rotor angle visualization device, characterized by, include: A circular plate has two surfaces: a marking surface and a bonding surface. The marking surface is marked with multiple bisectors, which pass through the center of the marking surface. Each pair of adjacent bisectors is marked with a different symbol. The bonding surface is fixed to the end face of the turbine head or the exciter. A clamping assembly clamps the outer circumference of the circular plate, with the marking surface facing the clamping assembly; The moving and rotating component drives the clamping component to move linearly along the central axis of the circular plate, and drives the clamping component to rotate about the central axis of the circular plate.

2. The turbine rotor angle visualization device according to claim 1, characterized in that: The clamping assembly includes multiple clamping hook components; The clamping component includes a fixed frame, which is fixedly connected to the movable rotating assembly. A T-shaped rod is installed inside the fixed frame. The horizontal bar of the T-shaped rod is slidably engaged with the fixed frame. The tail end of the vertical bar of the T-shaped rod passes through the fixed frame and is fixedly connected to a hook. A spring is fitted onto the vertical rod, with one end of the spring abutting against the horizontal rod and the other end of the spring abutting against the inside of the fixed frame; Each clamping component has a hook that engages with the outer circumference of the circular plate from different directions.

3. The turbine rotor angle visualization device according to claim 2, characterized in that: There are three clamping hook components, which are equally distributed on the same circumference.

4. The turbine rotor angle visualization device according to claim 2, characterized in that: The clamping assembly further includes a positioning plate, which is circular and has a diameter smaller than that of the circular plate. The positioning plate is fixed to the movable rotating assembly, and the fixing frame is fixed to the positioning plate.

5. The turbine rotor angle visualization device according to claim 1, characterized in that: The movable rotating assembly includes a fixed track, on which a slide table is slidably mounted. A threaded hole is provided on the slide table, and a threaded rod is installed in the threaded hole. One end of the threaded rod is fixed to the clamping assembly, and the other end of the threaded rod is fixed to a handle.

6. The turbine rotor angle visualization device according to claim 5, characterized in that: The movable rotating assembly also includes a stabilizing platform, and the fixed track is fixedly mounted on the stabilizing platform.

7. The turbine rotor angle visualization device according to claim 1, characterized in that: The marking surface has 32 equally spaced lines.

8. The turbine rotor angle visualization device according to claim 1, characterized in that: The markings between adjacent dividing lines are Arabic numerals.

9. The turbine rotor angle visualization device according to claim 1, characterized in that: The circular plate is made of cardboard, and the bonding surface is fixed to the end face of the turbine head shaft or the exciter by applying adhesive.

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