Shaft system alignment device of steam turbine generator unit

Abstract

The utility model relates to the technical field of generator set maintenance, in particular to a steam turbine generator set shaft system alignment device which comprises a mounting plate, a first clamping plate is arranged at the top of the mounting plate, a connecting assembly and a second clamping plate are arranged between the first clamping plate and the mounting plate, and one side of the second clamping plate is rotationally connected with a clamping screw. An adjusting seat is welded to the top of the first clamping plate, a first supporting plate is movably installed on the adjusting seat, a second supporting plate is movably installed at the end of the first supporting plate, and dial indicators are installed on the first supporting plate and the second supporting plate; according to the utility model, the clamping block on the adjusting rod is clamped with the clamping grooves at different positions on the adjusting pipe, and the clamping screw rod is matched to drive the second clamping plate to move, so that the dial indicator can be rapidly and stably clamped on couplings with different sizes, and the application range is expanded; and the distance between the corresponding dial indicator and the coupler can be independently adjusted after fixation, so that the tedious step of re-fixing due to the improper distance is avoided, and the efficiency and simplicity of alignment work are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of generator set maintenance, in particular to a shaft alignment device for a steam turbine generator set. Background Art

[0002] The turbine rotor and generator rotor are connected by a rigid coupling. Before the two rotors are connected, the center lines of the two shafts need to be adjusted to the same straight line. This adjustment process is called shaft alignment. The shaft alignment is achieved by adjusting the end faces and circumferential positions of the couplings of the turbine and generator rotors. The adjustment accuracy is related to whether the unit can operate normally. If the deviation is too large, the unit will vibrate excessively and friction will occur between the moving and static parts, causing serious safety hazards to the unit.

[0003] For example, in the prior art, a steam turbine generator coupling alignment device with publication number CN205448943U can utilize the space of the coupling bolt hole to push out the three positioning pillars in the connecting base and fix them in the bolt hole by rotating the main shaft to achieve the fixing effect of the dial indicator. However, due to the different shaft hole sizes of different couplings, when the device is fixed in a coupling with a larger shaft hole size, the connecting base will rotate with it due to the lack of sufficient stability when the main shaft rotates, thereby failing to achieve the effect of pushing out the positioning pillars, and further failing to complete the fixing operation, which limits the scope of application of the device and makes it difficult to fix couplings of different sizes.

[0004] In view of the above technical defects, a solution is now proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a steam turbine generator set shaft alignment device to solve the above-mentioned technical defects. The utility model can quickly and stably clamp the dial indicator on couplings of different sizes by engaging the clamping block on the adjusting rod with the slots at different positions on the adjusting tube, and cooperating with the clamping screw to drive the second clamping plate to move, thereby expanding the scope of use; and after fixation, the spacing between the corresponding dial indicator and the coupling can be adjusted separately, avoiding the tedious steps of re-fixing due to inappropriate spacing, thereby greatly improving the efficiency and simplicity of the alignment work.

[0006] This is achieved through the following technical solutions:

[0007] A steam turbine generator set shaft alignment device includes a mounting plate, a clamping plate 1 is arranged on the top of the mounting plate, and a connecting component is symmetrically arranged between the clamping plate 1 and the mounting plate, a clamping plate 2 is arranged between the clamping plate 1 and the mounting plate, a clamping screw is rotatably connected to one side of the clamping plate 2, and the clamping screw is threadedly connected to the mounting plate, an adjustment seat is welded on the top of the clamping plate 1, a support plate 1 is movably mounted on the adjustment seat, a support plate 2 is movably mounted on the end of the support plate 1, and the support plate 2 is vertically arranged with the support plate 1, and a dial indicator is installed on both the support plate 1 and the support plate 2.

[0008] Preferably, the connecting assembly includes adjusting tubes symmetrically fixedly connected to both sides of the mounting plate, the second clamping plate is slidably connected to the adjusting tubes on both sides, the first clamping plate is rotatably connected to an adjusting rod slidably connected to the corresponding adjusting tubes, a clamping block is symmetrically fixedly connected to the annular outer wall of the adjusting rod on one side away from the first clamping plate, a sliding groove slidably connected to the corresponding clamping block is provided on the inner wall of the adjusting tube, and a plurality of clamping grooves matching the clamping block are equidistantly provided on one side of the sliding groove along its length direction.

[0009] Preferably, a clamping groove with an arc-shaped structure is provided on one side opposite to the clamping plate 1 and the clamping plate 2, and a plurality of anti-slip protrusions are fixedly connected to the inner side wall of the clamping groove.

[0010] Preferably, an adjusting screw rod 1 is rotatably connected in the adjusting seat, an adjusting block 1 slidably connected to the adjusting seat is fixedly connected to one end of the supporting plate 1, and the adjusting block 1 is threadedly connected to the adjusting screw rod 1.

[0011] Preferably, an adjustment groove is penetrated through the free end of the top of the support plate 1, and an adjustment screw 2 is rotatably connected in the adjustment groove. An adjustment block 2 is fixedly connected to the top of the support plate 2 and is slidably connected to the adjustment groove, and the adjustment block 2 is threadedly connected to the adjustment screw 2.

[0012] The beneficial effects of the utility model are as follows:

[0013] When the utility model is in use, the turbine generator rotor coupling is placed between the first clamping plate and the second clamping plate, and the block on the adjusting rod is first engaged with the clamping groove at the corresponding position to achieve the adaptation effect of couplings of different sizes, which can cope with couplings of various specifications and sizes, thereby improving the scope of application, and then the clamping screw is rotated to drive the second clamping plate to move, and the dial indicator is clamped and fixed on the turbine generator rotor couplings of different sizes in cooperation with the clamping plate; thereafter, by rotating the adjusting screw first and the adjusting screw second, the distance between the corresponding dial indicator and the turbine rotor coupling can be independently controlled, so that the spacing can be flexibly adjusted according to needs during the alignment process, avoiding the tedious steps of re-fixing operation due to excessively large or small spacing, thereby improving the efficiency and simplicity of the alignment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings;

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the cooperation between the mounting plate and the second clamping plate of the utility model;

[0017] Figure 3 It is a structural schematic diagram of a splint 1 of the utility model;

[0018] Figure 4 It is a schematic diagram of the splitting of the support plate 1 and the support plate 2 of the utility model.

[0019] Legend:

[0020] 1. Mounting plate; 11. Clamping plate 1; 12. Clamping plate 2; 13. Clamping screw; 14. Adjusting seat; 15. Support plate 1; 16. Support plate 2; 17. Dial indicator; 18. Adjusting screw 1; 19. Adjusting block 1; 110. Adjusting slot; 111. Adjusting screw 2; 112. Adjusting block 2;

[0021] 2. Connecting assembly; 21. Adjusting tube; 22. Adjusting rod; 23. Block; 24. Slide groove; 25. Slot. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1: The problem that the existing technology has a limited scope of application and is difficult to fix with couplings of different sizes can be solved by the following solution;

[0024] See also Figure 1 - Figure 4As shown, in this embodiment, a steam turbine generator set shaft alignment device includes a mounting plate 1, a clamping plate 11 is arranged on the top of the mounting plate 1, and a connecting assembly 2 is symmetrically arranged between the clamping plate 11 and the mounting plate 1, which is used for a detachable connection between the clamping plate 11 and the mounting plate 1, and at the same time, the steam turbine generator rotor coupling is placed between the clamping plate 11 and the clamping plate 2 12 by disassembling the two. A clamping plate 2 12 is arranged between the clamping plate 11 and the mounting plate 1, and a clamping screw 13 is rotatably connected to one side of the clamping plate 2 12, and the clamping screw 13 is threadedly connected to the mounting plate 1, and a clamping torsion wheel is fixedly connected to the free end of the clamping screw 13;

[0025] By rotating the clamping torsion wheel to drive the clamping screw 13 to rotate, the clamping screw 13 drives the second clamping plate 12 to move close to the first clamping plate 11, so as to achieve the effect of quickly fixing the present alignment device on the turbine generator rotor coupling. Compared with the prior art, the problem of needing to perform positioning and placement is avoided. An adjusting seat 14 is welded on the top of the clamping plate 11, and a support plate 15 is movably mounted on the adjusting seat 14. A support plate 2 16 is movably mounted on the end of the support plate 15. The support plates 15 and 16 are used for the installation of a dial indicator 17, and the support plate 2 16 is vertically arranged with the support plate 15, so that the installed dial indicator 17 can synchronously detect the annular surface and the end surface of the turbine rotor coupling. The support plates 15 and 16 are both equipped with dial indicators 17.

[0026] The connecting assembly 2 includes an adjusting tube 21 symmetrically fixedly connected to both sides of the mounting plate 1, and the second clamping plate 12 is slidably connected to the adjusting tubes 21 on both sides, which can limit the second clamping plate 12 from rotating along with the rotation of the clamping screw 13. The first clamping plate 11 is rotatably connected to an adjusting rod 22 slidably connected to the corresponding adjusting tube 21. Through the sliding connection between the adjusting tube 21 and the adjusting rod 22, and the sliding of the second clamping plate 12 and the adjusting tube 21, the first clamping plate 11, the mounting plate 1 and the second clamping plate 12 can be kept parallel to each other at all times, thereby ensuring the stability of clamping and fixing. A clamping block 23 is symmetrically fixedly connected to the annular outer wall of the adjusting rod 22 on one side away from the first clamping plate 11, and a sliding groove 24 slidably connected to the corresponding clamping block 23 is provided on the inner wall of the adjusting tube 21, and a plurality of clamping grooves 25 adapted to the clamping block 23 are equidistantly provided on one side of the sliding groove 24 along its length direction.

[0027] By means of the engagement of the block 23 on the adjusting rod 22 with the slots 25 at different positions, the distance between the clamping plate 11 and the mounting plate 1 can be further adjusted, thereby reducing the actual length of the clamping screw 13 and reducing the number of turns of the clamping screw 13 during fixation, thereby achieving a quick fixation effect. The top of the slide groove 24 passes through the adjusting tube 21 to separate the adjusting rod 22 from the adjusting tube 21, thereby achieving an effect of facilitating installation. One end of the adjusting rod 22 passes through the clamping plate 11 and is fixedly connected to a cross bar, which is convenient for forcing the adjusting rod 22 to deflect, thereby completing the engagement of the block 23 with the slot 25 at the corresponding position.

[0028] An arc-shaped clamping groove is provided on the opposite side of the clamping plate 11 and the clamping plate 2 12 to increase the contact area of ​​the clamping plate 11 and the clamping plate 2 12 to the coupling, thereby improving the clamping effect. A plurality of anti-slip protrusions are fixedly connected to the inner wall of the clamping groove to further increase the anti-slip effect between the clamping plate 11 and the clamping plate 2 12.

[0029] An adjusting screw 18 is rotatably connected in the adjusting seat 14, and one end of the support plate 15 is fixedly connected to an adjusting block 19 which is slidably connected to the adjusting seat 14, and the adjusting block 19 is threadedly connected to the adjusting screw 18, and one end of the adjusting screw 18 passes through the outside of the adjusting seat 14 and is fixedly connected to an adjusting twist wheel 1. By rotating the adjusting twist wheel 1, the adjusting screw 18 is driven to rotate, and the adjusting block 19 is driven to slide in the adjusting seat 14, and cooperates with the support plate 15 to separately adjust the distance between the dial indicator 17 thereon and the annular side wall of the coupling, so that the spacing can be flexibly adjusted as needed during the alignment process, avoiding the cumbersome steps of re-fixing operation due to excessive or too small spacing.

[0030] An adjusting groove 110 is formed through the free end of the top of the support plate 15, and an adjusting screw 111 is rotatably connected in the adjusting groove 110. One end of the adjusting screw 111 passes through the outside of the adjusting groove 110 and is fixedly connected to an adjusting twist wheel 2. An adjusting block 112 slidably connected to the adjusting groove 110 is fixedly connected to the top of the support plate 16, and the adjusting block 112 is threadedly connected to the adjusting screw 111. The adjusting screw 111 is rotated by rotating the adjusting twist wheel 2, and the adjusting block 112 is driven to slide in the adjusting groove 110, and cooperates with the support plate 16 to separately adjust the distance between the dial indicator 17 thereon and the end face of the coupling, so that the spacing can be flexibly adjusted as needed during the alignment process, avoiding the tedious steps of re-fixing due to excessive or small spacing.

[0031] The working process and principle of the utility model are as follows:

[0032] During the use of the utility model, the clamping plate 11 and the clamping plate 2 12 are respectively placed on the top and bottom sides of the turbine generator rotor coupling, the adjusting rod 22 on the clamping plate 11 is inserted into the corresponding adjusting tube 21, and the distance between the clamping plate 11 and the mounting plate 1 is adjusted, and the two groups of adjusting rods 22 are rotated so that the clamping blocks 23 on the outer wall are engaged with the clamping grooves 25 at the corresponding positions to complete the connection between the clamping plate 11 and the clamping plate 2 12, and the clamping screw 13 is rotated to drive the clamping plate 2 12 to move close to the clamping plate 1 11, so as to quickly clamp and fix the turbine generator rotor coupling;

[0033] The adjusting screw rod 18 is rotated to drive the adjusting block 19 to slide in the adjusting seat 14, and cooperate with the support plate 15 to adjust the distance between the dial indicator 17 thereon and the annular side wall of the turbine rotor coupling separately. The adjusting screw rod 111 is rotated to drive the adjusting block 112 to slide in the adjusting groove 110, and cooperate with the support plate 16 to adjust the distance between the dial indicator 17 thereon and the end face of the turbine rotor coupling separately.

[0034] After the adjustment is completed, rotate the coupling one circle and stop every 90°. Record the data on the two dial indicators 17 at the four stop positions and perform shaft alignment adjustment based on the calculation.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A steam turbine generator set shaft alignment device, comprising a mounting plate (1), characterized in that: A clamping plate (11) is arranged on the top of the mounting plate (1), and a connecting assembly (2) is symmetrically arranged between the clamping plate (11) and the mounting plate (1), a clamping plate (12) is arranged between the clamping plate (11) and the mounting plate (1), one side of the clamping plate (12) is rotatably connected with a clamping screw (13), and the clamping screw (13) is threadedly connected to the mounting plate (1), an adjustment seat (14) is welded on the top of the clamping plate (11), a support plate (15) is movably mounted on the adjustment seat (14), a support plate (16) is movably mounted on the end of the support plate (15), and the support plate (16) is vertically arranged with the support plate (15), and a dial indicator (17) is installed on both the support plate (15) and the support plate (16).

2. A steam turbine generator shaft alignment device according to claim 1, characterized in that: The connecting assembly (2) comprises adjusting tubes (21) symmetrically fixedly connected to both sides of the mounting plate (1); the second clamping plate (12) is slidably connected to the adjusting tubes (21) on both sides; the first clamping plate (11) is rotatably connected to an adjusting rod (22) slidably connected to the corresponding adjusting tubes (21); a clamping block (23) is symmetrically fixedly connected to the annular outer wall of the adjusting rod (22) on one side away from the first clamping plate (11); a sliding groove (24) slidably connected to the corresponding clamping block (23) is provided on the inner wall of the adjusting tube (21); and a plurality of clamping grooves (25) matching the clamping block (23) are equidistantly provided on one side of the sliding groove (24) along its length direction.

3. The shaft alignment device for a steam turbine generator set according to claim 1, characterized in that: The clamping grooves with arc-shaped structures are provided on the opposite sides of the clamping plate 1 (11) and the clamping plate 2 (12), and a plurality of anti-slip protrusions are fixedly connected to the inner side walls of the clamping grooves.

4. The shaft alignment device for a steam turbine generator set according to claim 1, characterized in that: An adjusting screw rod (18) is rotatably connected inside the adjusting seat (14), and one end of the supporting plate (15) is fixedly connected to an adjusting block (19) slidably connected to the adjusting seat (14), and the adjusting block (19) is threadedly connected to the adjusting screw rod (18).

5. The shaft alignment device for a steam turbine generator set according to claim 1, characterized in that: The top free end of the support plate 1 (15) is penetrated by an adjusting groove (110), and the adjusting screw rod 2 (111) is rotatably connected in the adjusting groove (110); the top of the support plate 2 (16) is fixedly connected with an adjusting block 2 (112) slidably connected to the adjusting groove (110), and the adjusting block 2 (112) is threadedly connected to the adjusting screw rod 2 (111).

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