Vertical shaft type generator rotor roundness measuring support

Abstract

A vertical shaft type generator rotor roundness measuring support comprises a roundness measuring base and a support body. The frame body is sleeved on the roundness measuring base, the roundness measuring base is cylindrical, the bottom of the roundness measuring base is connected with the flange plate through a flange, and the flange plate is connected with a spigot at the end part of a spindle of a rotor of the vertical shaft type generator through a boss at the bottom. According to the utility model, the roundness measuring support is prevented from being sleeved on the motor rotor main shaft, and the influence of the excitation lead on the work of the roundness measuring support is avoided. Holes are formed in different positions of the flange plate and can be connected with the ends of generator rotor spindles of different units, and universality of the device is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of generators, and in particular to the field of rotor detection. Background Art

[0002] The rotor of a vertical shaft generator is the core component of the generator. Among them, the roundness of the rotor directly affects the stability of the generator operation process. The rounder the rotor, the smoother the magnetic field formed by the rotor, and the more stable the current generated by the stator after cutting the magnetic flux lines. Therefore, rotor roundness measurement is extremely important during rotor assembly and manufacturing. Through measurement, the position deviation of each magnetic pole during installation can be seen, and then the purpose of adjusting the rotor roundness can be achieved by adjusting the magnetic pole. Rotor roundness measurement mainly relies on a circular measuring device.

[0003] Chinese patent document CN210198352U discloses "A device for measuring the circularity of a hydro-generator rotor". The device can adjust the circularity measurement radius within a certain size range and can be used for circularity measurement of rotors of various specifications. It has a wide range of applications and avoids the phenomenon of designing a matching circularity measurement mechanism for each rotor, which leads to a large workload and waste of raw materials, and improves the measurement accuracy and efficiency.

[0004] Chinese patent document CN202770377U discloses a "Large Hydro-Turbine Generator Rotor Roundness Frame", which ensures the roundness, coaxiality and center height of the outer circle of the magnetic poles during rotor assembly, and plays an important role in the safe operation of the unit. In addition, it is universal and can meet the needs of assembling rotors of various models and specifications of hydro-turbine generators.

[0005] Chinese patent document CN219531918U discloses a device for measuring the roundness of a generator rotor for a hydro-turbine generator set. Multiple radial adjustment screws are arranged in the horizontal direction. The lower end of the axial adjustment screw contacts the generator rotor of the hydro-turbine generator set. The outer side of the radial adjustment screw contacts the inner wall of the inner hole of the generator rotor of the hydro-turbine generator set. The utility model adopts a design without rotor horizontal adjustment. Compared with traditional rotor roundness measuring tools, it does not need to accurately adjust the horizontality of the rotor, saving the time required for maintenance.

[0006] At present, in the prior art, the circle measuring bracket is fixed on the rotating shaft, which is easily affected by the excitation lead during the installation and circle measuring process, causing inconvenience to the circle measuring work. Utility Model Content

[0007] The utility model aims to provide a vertical shaft generator rotor circle measuring bracket to solve the technical problem of vertical shaft generator rotor circle measuring.

[0008] To achieve the above purpose, the specific technical solution of the utility model is as follows:

[0009] A vertical shaft generator rotor circle measuring bracket, characterized in that it includes a circle measuring base and a frame body; the frame body is sleeved on the circle measuring base, the circle measuring base is cylindrical, the bottom of the circle measuring base is connected to the flange plate through a flange, and the flange plate is connected to the stopper at the end of the main shaft of the vertical shaft generator rotor through a boss at the bottom.

[0010] Furthermore, the flange plate is provided with a staggered platform which is matched and connected with the circle measuring base, and the staggered platform is provided with a screw hole which is connected with the bottom flange of the circle measuring base.

[0011] Furthermore, a sleeve is provided in the middle of the frame, the sleeve is mounted on the circle measuring base, a counterweight rod is provided on one side of the sleeve, and the end of the counterweight rod is connected to the counterweight block; a measuring cross bar is provided on the side opposite to the counterweight rod, and the end of the measuring cross bar is vertically connected to a measuring vertical rod downward, and a dial indicator is installed on the measuring vertical rod.

[0012] Furthermore, the counterweight block includes a first counterweight block and a second counterweight block, the first counterweight block is fixedly mounted on the counterweight rod, and the second counterweight block is connected to the tail end of the counterweight rod.

[0013] Furthermore, the counterweight rod is connected to a support rod, one end of the support rod is connected to the middle of the counterweight rod, and the other end is connected to the bottom of the sleeve.

[0014] Furthermore, the measuring cross bar and the measuring vertical bar are connected with anti-bending bars via supporting columns.

[0015] Furthermore, a stabilizing rod is connected to the measuring pole, and the stabilizing rod is connected to the sleeve.

[0016] Furthermore, the stabilizer bar includes two stabilizer sub-bars, which are combined into a V-shaped bracket, and the open end of the stabilizer bar is connected to the sleeve through an extended horizontal bar.

[0017] Furthermore, a plurality of horizontal supporting sub-rods are arranged between the stabilizing sub-rods.

[0018] Furthermore, a flange ring is provided in the middle of the circle measuring base, and the diameters of the circle measuring bases on both sides of the flange ring are different, and the end with the smaller diameter is the butt end with the sleeve.

[0019] The technical solution of the utility model has the following advantages:

[0020] 1. The circle measuring base is connected to the stopper at the end of the vertical shaft generator rotor main shaft, thereby avoiding the need to sleeve the circle measuring bracket on the motor rotor main shaft and avoiding the influence of the excitation lead wire on the work of the circle measuring bracket.

[0021] The circular measuring base is connected to the end of the main shaft of the vertical shaft generator rotor through a flange plate, and can be adapted to different main shafts by replacing the flange plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the circle measuring base structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the top view of the circle measuring base of the utility model;

[0025] Figure 4 It is a schematic diagram of the side cross-sectional structure of the flange of the utility model;

[0026] Figure 5 It is a structural schematic diagram of the stabilizer bar of the utility model. DETAILED DESCRIPTION

[0027] In order to better understand the purpose, structure and function of the utility model, the vertical shaft generator rotor circularity measuring bracket of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0028] Example 1

[0029] like Figure 1~Figure 4 As shown, a vertical shaft generator rotor circle measuring bracket of the utility model comprises a circle measuring base 1 and a frame body. The frame body is sleeved on the circle measuring base 1, the circle measuring base 1 is cylindrical, the bottom of the circle measuring base 1 is connected to a flange 13 through a flange, and the flange and the flange 13 are locked by screws. The flange 13 is connected to the stopper at the end of the main shaft of the vertical shaft generator rotor through a boss 14 at the bottom. The boss 14 is connected with the stopper to make the circle measuring base 1 coaxial with the main shaft. After installation, the flange 13 and the vertical shaft are fixed by screws.

[0030] Specifically, the screw holes on the flange 13 are arranged at different circumferential positions and can be connected to the ends of the main shafts of generator rotors of different diameters of different units, thereby realizing the versatility of the device of the present application.

[0031] Specifically, during the implementation of the technical solution, a staggered platform 15 is provided on the flange 13 and connected to the circle measuring base 1. The staggered platform 15 is provided with a screw hole connected to the bottom flange of the circle measuring base 1. The staggered platform 15 is a sunken type, and is buckled with the circle measuring base 1, and is not fixed by screws and screw holes. The edges of the staggered platform 15 and the boss 14 are chamfered for easy installation.

[0032] Example 2

[0033] In this embodiment, if Figure 1As shown, a sleeve 2 is provided in the middle of the frame, and the sleeve 2 is sleeved on the circle measuring base 1. A counterweight rod 3 is provided on one side of the sleeve 2, and the end of the counterweight rod 3 is connected to a counterweight block to keep the two sides of the sleeve 2 balanced. A measuring crossbar 4 is provided on the side opposite to the counterweight rod 3, and a measuring vertical rod 5 is vertically connected to the end of the measuring crossbar 4 downward, and a dial indicator 7 is mounted on the measuring vertical rod 5. The dial indicators 7 are distributed at the ends of the measuring vertical rod 5 and are distributed at the upper, middle and lower positions of the rotor.

[0034] Specifically, in the implementation process of the present technical solution, the counterweight block includes a first counterweight block 31 and a second counterweight block 32, wherein the first counterweight block 31 is fixedly mounted on the counterweight rod 3, and the second counterweight block 32 is connected to the tail end of the counterweight rod 3 through a steel wire. The number of the second counterweight blocks 32 and the length of the connecting steel wire are adjusted according to the size of the rotor.

[0035] Specifically, the counterweight rod 3 is connected with a support rod 33, one end of the support rod 33 is connected to the middle of the counterweight rod 3, and the other end is connected to the bottom of the sleeve 2 to form a triangle, so as to prevent the support rod 33 from being deformed under the action of the counterweight block.

[0036] Example 3

[0037] In this embodiment, if Figure 1 As shown, the measuring cross bar 4 and the measuring upright bar 5 are connected with an anti-bending rod 41 through a supporting column 42. The anti-bending rod 41 prevents the measuring cross bar 4 and the measuring upright bar 5 from being deformed, thereby ensuring the consistency of the measurement data.

[0038] Example 4

[0039] In this embodiment, if Figure 1 and Figure 5 As shown, the measuring upright pole 5 is connected with a stabilizing rod 6, which is connected to the sleeve 2. The stabilizing rod 6 includes two stabilizing sub-rods 61, which are combined into a V-shaped bracket, and the open end of the stabilizing rod 6 is connected to the sleeve 2 through an extended horizontal rod 63. A plurality of horizontal supporting sub-rods 62 are arranged between the stabilizing sub-rods 61.

[0040] Example 5

[0041] In this embodiment, if Figure 2 and Figure 4 As shown, a flange ring 11 is provided in the middle of the circle measuring base 1 , and the diameters of the circle measuring base 1 on both sides of the flange ring 11 are different, and the end with a smaller diameter is a docking end 12 with the sleeve 2 .

[0042] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A vertical shaft generator rotor roundness measuring bracket, characterized in that: It comprises a circle measuring base (1) and a frame; the frame is sleeved on the circle measuring base (1); the circle measuring base (1) is cylindrical; the bottom of the circle measuring base (1) is connected to a flange plate (13) via a flange; the flange plate (13) is connected to a stopper at the end of a main shaft of a vertical shaft generator rotor via a boss (14) at the bottom.

2. The vertical shaft generator rotor circularity measuring bracket according to claim 1, characterized in that: The flange (13) is provided with a staggered platform (15) which is matched and connected to the circle measuring base (1), and the staggered platform (15) is provided with a screw hole which is connected to the bottom flange of the circle measuring base (1).

3. The vertical shaft generator rotor circularity measuring bracket according to claim 2, characterized in that: A sleeve (2) is provided in the middle of the frame, the sleeve (2) is sleeved on the circle measuring base (1), a counterweight rod (3) is provided on one side of the sleeve (2), the end of the counterweight rod (3) is connected to a counterweight block; a measuring cross bar (4) is provided on the side opposite to the counterweight rod (3), the end of the measuring cross bar (4) is vertically connected to a measuring vertical rod (5) downward, and a dial indicator (7) is installed on the measuring vertical rod (5).

4. The vertical shaft generator rotor circularity measuring bracket according to claim 3, characterized in that: The counterweight block comprises a first counterweight block (31) and a second counterweight block (32); the first counterweight block (31) is fixedly mounted on the counterweight rod (3); and the second counterweight block (32) is connected to the rear end of the counterweight rod (3).

5. The vertical shaft generator rotor circularity measuring bracket according to claim 4, characterized in that: The counterweight rod (3) is connected to a support rod (33), one end of the support rod (33) is connected to the middle of the counterweight rod (3), and the other end is connected to the bottom of the sleeve (2).

6. The vertical shaft generator rotor circularity measuring bracket according to claim 5, characterized in that: The measuring cross bar (4) and the measuring vertical bar (5) are connected to an anti-bending bar (41) via a supporting column (42).

7. The vertical shaft generator rotor circularity measuring bracket according to claim 6, characterized in that: The measuring upright pole (5) is connected to a stabilizing rod (6), and the stabilizing rod (6) is connected to the sleeve (2).

8. The vertical shaft generator rotor circularity measuring bracket according to claim 7, characterized in that: The stabilizing rod (6) comprises two stabilizing auxiliary rods (61), the stabilizing auxiliary rods (61) are combined into a V-shaped bracket, and the open end of the stabilizing rod (6) is connected to the sleeve (2) via an extended horizontal rod (63).

9. The vertical shaft generator rotor circularity measuring bracket according to claim 8, characterized in that: A plurality of horizontal supporting sub-rods (62) are arranged between the stabilizing sub-rods (61).

10. The vertical shaft generator rotor circularity measuring bracket according to claim 8, characterized in that: A flange ring (11) is provided in the middle of the circle measuring base (1), and the diameters of the circle measuring base (1) on both sides of the flange ring (11) are different, and the end with the smaller diameter is a butt end (12) for connecting with the sleeve (2).

Images