A centering device for steam turbine installation

Abstract

The application discloses a center calibration device for steam turbine installation and belongs to the technical field of steam turbine calibration; the center calibration device comprises an adjusting plate and further comprises a calibration disc, opposite surfaces of the calibration disc on two sides are provided with first laser emitters through mounting seats; two symmetrically mounted bearing seats are fixedly provided with receiving discs, a second laser emitter is fixedly mounted on one receiving disc, a second laser receiver is fixedly mounted on the other receiving disc, and first laser receivers are mounted on the receiving discs on the two sides; the first laser emitters on the two sides emit linear beams which penetrate through first light transmission holes and are directly projected on the first laser receivers, the first laser receivers convert optical signals into electrical signals, and one-time calibration of the device is completed; the second laser emitter emits a linear beam which penetrates through a second light transmission hole and is directly projected on the second laser receiver on the other receiving disc, the second laser receiver converts optical signals into electrical signals, and two-time calibration of the device is completed.

Description

Technical Field

[0001] This invention relates to the field of steam turbine calibration technology, and in particular to a central device for steam turbine installation. Background Technology

[0002] A steam turbine, also known as a steam turbine engine, is a type of rotary steam turbine engine and a rotary steam power unit. High-temperature and high-pressure steam passes through a fixed nozzle, becomes an accelerated airflow, and is then injected onto the blades, causing the rotor equipped with a row of blades to rotate and perform work.

[0003] The general turbine installation process is as follows: water is cut off from the roof of the main plant building, bolts are pre-embedded in the turbine operating floor, the platform, lower, intermediate, and high-pressure cylinders and rotor are installed, auxiliary machines are installed at the same time, individual commissioning is carried out, cylinder mounting, oil circulation, and the installation process of the small turbine is the same as above, and finally, the turbine is started.

[0004] Ensuring the precise installation of the lower cylinder is a crucial part of the entire turbine installation process. Existing center calibration devices only perform a preliminary calibration, resulting in low accuracy and a large difference in the radial clearance between the rotor and the cylinder. Summary of the Invention

[0005] The purpose of this invention is to solve the problem in the prior art that the center calibration device only performs a preliminary calibration once, resulting in low accuracy and a large difference in the radial clearance between the rotor and the cylinder. Therefore, this invention proposes a center calibration device for turbine installation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A center calibration device for turbine installation includes an adjusting plate with a clamping assembly, in which a lower cylinder is clamped. It further includes: calibration disks fixedly mounted on both sides of the adjusting plate, with a first laser emitter mounted on each opposite surface of the calibration disks via a mounting base; two symmetrically mounted bearing seats, each with a receiving disk fixedly mounted, a second laser emitter fixedly mounted on one receiving disk and a second laser receiver fixedly mounted on the other receiving disk, with a first laser receiver mounted on each of the receiving disks on both sides; a top plate disposed on the adjusting plate and slidably connected to the adjusting plate via a driving assembly; and support members fixedly mounted at the four corners of the lower surface of the top plate for support.

[0008] In order to ensure that the beams emitted by the first laser emitter and the second laser emitter are received completely, preferably, the calibration disk has a plurality of first light-transmitting holes and a plurality of second light-transmitting holes, and the first light-transmitting holes and the second light-transmitting holes are alternately arranged.

[0009] In order to fix the laser emitter, preferably, the mounting base comprises a support rod welded at the center of the calibration disc, a receiving disc is welded on the side of the support rod away from the calibration disc, a plurality of mounting holes and a first sleeve matched with the mounting holes are equidistantly arranged on the receiving disc in the circumferential direction, and the first laser emitter is mounted in the first sleeve.

[0010] In order to reduce the sliding and falling of the laser emitter, further, two clamping plates are symmetrically arranged in the first sleeve, and a telescopic rod is connected between the two clamping plates and the inner wall of the first sleeve.

[0011] In order to clamp the lower cylinder of the steam turbine, preferably, the clamping assembly comprises slide rails fixedly installed on both sides of the adjusting plate, a sliding plate is slidably connected to each of the slide rails through a sliding block, a U-shaped seat is fixedly installed at both ends of the sliding plate, a pin shaft is fixedly connected in the U-shaped seat, and an L-shaped clamping arm is rotatably connected to the pin shaft; a connecting plate is rotatably connected to the center of the adjusting plate through a rotating shaft, and a connecting arm is connected between both ends of the connecting plate and the sliding plate, wherein a first air cylinder is installed on the adjusting plate, and an output end of the first air cylinder is fixedly connected to one side of the sliding plate.

[0012] In order to facilitate secondary clamping, further, a torsional spring is sleeved on the pin shaft, one end of the torsional spring is fixed to the bottom of the U-shaped seat, and the other end of the torsional spring is fixed to the L-shaped clamping arm.

[0013] In order to fine-tune according to the receiving result of the light beam until the light beam is collinear with the center of the lower cylinder of the steam turbine, preferably, the driving assembly comprises two rotating shaft seats fixedly installed along the width direction of the top plate, a lead screw is rotatably connected between the two rotating shaft seats through a bearing, one end of the lead screw penetrates through the rotating shaft seat and is installed with a motor, a nut seat is threadedly connected to the lead screw, and the nut seat and the adjusting plate are fixedly installed together; sliding strips are fixedly installed on both sides above the adjusting plate, sliding groove seats are fixedly installed on both sides below the top plate, and the sliding strips slide in the sliding groove seats.

[0014] In order to support the device as a whole, preferably, any of the support members comprises a sliding rod fixedly installed with the top plate, the lower end of the sliding rod is slidably connected in a second sleeve, cross beams are welded between the second sleeves on both sides, a second air cylinder is installed on the cross beams, and a movable end of the second air cylinder is fixedly connected to the top plate.

[0015] In order to place the calibrated lower cylinder, further, a hoop is installed in the second sleeve, an air bag is installed in the hoop, an air outlet pipe is communicated on the air bag, the air outlet pipe penetrates through the sliding rod to the adjusting plate, a nozzle is installed on the adjusting plate through a support frame, and one end of the air outlet pipe away from the sliding rod is communicated with the nozzle.

[0016] In order to reduce the movement of the device when placing, further, the second sleeve is slidably connected with a movement plate, a supporting column is fixedly installed below the movement plate, and universal wheels are fixedly installed at one end of the supporting column outside the second sleeve; the first spring is fixedly connected between the movement plate and the hoop.

[0017] Compared with the prior art, the center calibration device for steam turbine installation has the following beneficial effects:

[0018] 1. The center calibration device for steam turbine installation moves to between the two bearing seats, the first laser emitter on the two sides emits a bundle of lines and penetrates through the first light transmission hole to directly irradiate on the first laser receiver on the receiving disc, the first laser receiver converts the optical signal into an electrical signal, the amplifier amplifies the output electrical signal, and one-time calibration of the device is completed. The second laser emitter emits a bundle of lines and penetrates through the second light transmission hole to directly irradiate on the second laser receiver on the receiving disc on the other side, the second laser receiver converts the optical signal into an electrical signal, and the amplifier amplifies the output electrical signal, and two-time calibration of the device is completed.

[0019] 2. The center calibration device for steam turbine installation, when placing the lower cylinder body, the sliding rod slides downward in the second sleeve, the air bag is pressed to shrink, the volume becomes smaller, the movement plate moves upward under the elastic potential energy of the first spring, and the universal wheels are pulled into the second sleeve, so that the device does not move when the lower cylinder body is placed, thereby improving the accuracy of calibration, and the compressed air is collected into the jet pipe through the air outlet pipe and is blown out, thereby blowing away the dust falling into the lower cylinder body and improving the operation of the rotor. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The figure is a structural schematic view of the center calibration device for steam turbine installation;

[0021] Figure 2 The figure is a structural schematic view of the lower cylinder body of the center calibration device for steam turbine installation;

[0022] Figure 3 The figure is a structural schematic view of the first sleeve of the center calibration device for steam turbine installation;

[0023] Figure 4 The figure is a structural schematic view of the clamping assembly of the center calibration device for steam turbine installation;

[0024] Figure 5 The figure is a structural schematic view of the adjusting disc of the center calibration device for steam turbine installation;

[0025] Figure 6 The figure is a structural schematic view of the supporting member of the center calibration device for steam turbine installation;

[0026] Figure 7 Structure diagram of the center calibration device for steam turbine installation according to the present application Figure 1 Structure diagram of the center calibration device for steam turbine installation according to the present application

[0027] Figure 8 Structure diagram of the center calibration device for steam turbine installation according to the present application Figure 1 Structure diagram of the center calibration device for steam turbine installation according to the present application

[0028] In the figure: 1, adjusting plate; 2, lower cylinder body; 3, calibration disc; 301, first light transmission hole; 302, second light transmission hole; 4, mounting seat; 5, first laser emitter; 6, bearing seat; 7, receiving disc; 8, second laser emitter; 9, top plate; 10, support rod; 11, receiving disc; 12, first sleeve; 13, first spring; 14, first laser receiver; 15, clamping plate; 16, telescopic rod; 17, slide; 18, sliding block; 19, slide plate; 20, U-shaped seat; 21, pin shaft; 22, L-shaped clamping arm; 23, rotating shaft; 24, connecting plate; 25, connecting arm; 26, first cylinder; 27, torsional spring; 28, slide; 29, slide groove seat; 30, rotating shaft seat; 31, screw rod; 32, motor; 33, nut seat; 34, second laser receiver; 35, slide rod; 36, second sleeve; 37, clamp; 38, moving plate; 39, support column; 40, universal wheel; 41, cross beam; 42, second cylinder; 43, air bag; 44, air outlet pipe; 45, support frame; 46, nozzle; 47, air inlet pipe; 48, third sleeve; 49, abutting rod; 50, second spring. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application.

[0030] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0031] Embodiment 1:

[0032] Reference Figures 1-8The embodiment of the present application provides a center calibration device for steam turbine installation, which comprises an adjusting plate 1 with a clamping assembly, a lower cylinder body 2 clamped in the clamping assembly, and further comprises: calibration discs 3 fixedly installed on both sides of the adjusting plate 1, first laser emitters 5 installed on the opposite surfaces of the two calibration discs 3 through mounting seats 4; two symmetrically installed bearing seats 6, each of which is fixedly installed with a receiving disc 7, a second laser emitter 8 fixedly installed on one side of the receiving disc 7, a second laser receiver 34 fixedly installed on the other side of the receiving disc 7, and a first laser receiver 14 installed on each of the two receiving discs 7.

[0033] Further, a plurality of first light transmission holes 301 and a plurality of second light transmission holes 302 are formed in the calibration disc 3, and the first light transmission holes 301 and the second light transmission holes 302 are alternately arranged.

[0034] The first light transmission holes 301 can be three in number, and the number of the second light transmission holes 302 is consistent with that of the first light transmission holes 301, and each of the first light transmission holes 301 and the second light transmission holes 302 is in a triangular structure.

[0035] It should be noted that when the steam turbine is installed, the position of the lower cylinder body 2 needs to be fixed first, the rotor in the steam turbine is installed in the lower cylinder body 2, and the support shaft on which the rotor is located needs to be placed in the two bearing seats 6 to bear the weight and the unbalanced force of the rotation of the rotor, so as to keep the rotation center of the rotor consistent with the center of the cylinder body, thereby ensuring that the radial clearance of the rotor and the static parts such as the cylinder, the steam seal and the compartment plate is correct, and therefore, the center line of the lower cylinder body 2 needs to be collinear with the two bearing seats 6 during installation.

[0036] The device is moved between the two bearing seats 6, the first laser emitters 5 on the two sides emit a bundle of lines and penetrate the first light transmission holes 301 to directly irradiate on the first laser receivers 14 on the receiving discs 7, the first laser receivers 14 convert the optical signals into electrical signals, the electrical signals are amplified by an amplifier to output, and the calibration of the device is completed.

[0037] The second laser emitter 8 emits a bundle of lines and penetrates the second light transmission holes 302 to directly irradiate on the second laser receiver 34 on the other receiving disc 7, the second laser receiver 34 converts the optical signals into electrical signals, the electrical signals are amplified by an amplifier to output, and the secondary calibration of the device is completed.

[0038] A top plate 9 is arranged on the adjusting plate 1 and is in sliding connection with the adjusting plate 1 through a driving assembly.

[0039] When there is a slight error between the clamped lower cylinder body 2 and the two bearing seats 6, the position of the lower cylinder body 2 is adjusted through the driving assembly, so that the central axis of the lower cylinder body 2 is collinear with the two bearing seats 6.

[0040] Supporting members are fixedly installed at four corners of the lower surface of the top plate 9 and serve to support the overall frame.

[0041] Referring to Figure 6 The support in the scheme is further optimized.

[0042] Any support includes a sliding rod 35 fixedly installed with the top plate 9, the lower end of the sliding rod 35 is slidingly connected in the second sleeve 36, the second sleeves 36 between the two sides are welded with a crossbeam 41, the crossbeam 41 reinforces the stability of the device, the second cylinder 42 is installed on the crossbeam 41, the movable end of the second cylinder 42 is fixedly connected with the top plate 9.

[0043] During the operation of the second cylinder 42, the output end of the second cylinder 42 drives the top plate 9 to lift, thereby driving the sliding rod 35 to slide in the second sleeve 36 through the top plate 9, and the placement of the lower cylinder body 2 is completed.

[0044] Referring to Figure 4 and Figure 6 The second sleeve 36 is installed with a hoop 37, the hoop 37 is installed with an air bag 43, the air bag 43 is communicated with an air outlet pipe 44, the air outlet pipe 44 penetrates the sliding rod 35 to the adjusting plate 1; the adjusting plate 1 is installed with a spray pipe 46 through a support frame 45, and the end of the air outlet pipe 44 away from the sliding rod 35 is communicated with the spray pipe 46.

[0045] The upper end surface of the air bag 43 is installed with the sliding rod 35, when the sliding rod 35 slides downward in the second sleeve 36, the air bag 43 is pressed to shrink, the compressed air is collected in the spray pipe 46 through the air outlet pipe 44 and sprayed out, blows away the dust falling in the lower cylinder body 2, improves the operation of the rotor, when the sliding rod 35 moves upward in the second sleeve 36 to reset, the air bag 43 expands, facilitating secondary use.

[0046] It should be noted that the air outlet pipe 44 is installed with an air outlet check valve, which is only used for air exhaust, and the air bag 43 is also communicated with an air inlet pipe 47, and the air inlet pipe 47 is installed with an air inlet check valve, which is only used for air supply.

[0047] Further, the second sleeve 36 is slidingly connected with a moving plate 38, the moving plate 38 is fixedly installed with a support column 39 below, the support column 39 is fixedly installed with a universal wheel 40 at the end outside the second sleeve 36; the moving plate 38 is fixedly connected with the hoop 37 through the first spring 13. During the shrinkage of the air bag 43, the volume becomes smaller, the moving plate 38 moves upward under the elastic potential of the first spring 13, and the universal wheel 40 is pulled into the second sleeve 36, so that the device does not move when the lower cylinder body 2 is placed, thereby improving the accuracy of calibration.

[0048] Referring to Figure 6 The bottom of the second sleeve 36 is fixedly installed with an antiskid pad, further improving the stability of the device.

[0049] Referring to Figure 1 andFigure 3 and Figure 8 Further, the mounting seat 4 comprises a support rod 10 welded at the center of the calibration disc 3, and a receiving disc 11 welded on the side of the support rod 10 away from the calibration disc 3, wherein a mounting hole and a first sleeve 12 matched with the mounting hole are arranged on the receiving disc 11 in a circumferential equidistant manner, and the first laser emitter 5 is mounted in the first sleeve 12.

[0050] Further, two clamping plates 15 are symmetrically arranged in the first sleeve 12, and a telescopic rod 16 is connected between the inner wall of the first sleeve 12 and the two clamping plates 15.

[0051] The shape of the fixed first laser emitter 5 is the same as the arrangement of the plurality of first light transmission holes 301, and the first laser emitter 5 is placed in the first sleeve 12, and the two clamping plates 15 are tightly pressed against the first laser emitter 5 under the action of the telescopic rod 16, so as to realize fixation.

[0052] It should be noted that the telescopic rod 16 comprises a third sleeve 48 fixedly installed on the inner wall of the first sleeve 12, a stop rod 49 slidably connected in the third sleeve 48, a second spring 50 sleeved on the stop rod 49, and the two ends of the second spring 50 are fixedly connected with the third sleeve 48 and the clamping plate 15 respectively.

[0053] Embodiment 2:

[0054] Referring to Figure 1 and Figure 4 and Figure 7 The clamping assembly comprises a slide 17 fixedly installed on both sides of the adjusting plate 1, a sliding plate 19 slidably connected with the slide 17 on the two sides through a sliding block 18, a U-shaped seat 20 fixedly installed at both ends of the sliding plate 19, a pin shaft 21 fixedly connected in the U-shaped seat 20, and an L-shaped clamping arm 22 rotatably connected with the pin shaft 21; a connecting plate 24 is rotatably connected with the adjusting plate 1 at the center through a rotating shaft 23, and a connecting arm 25 is connected between both ends of the connecting plate 24 and the sliding plate 19, wherein a first air cylinder 26 is installed on the adjusting plate 1, and the output end of the first air cylinder 26 is fixedly connected with one side of the sliding plate 19.

[0055] During the operation of the first air cylinder 26, the output end of the first air cylinder 26 pulls the sliding plate 19 on the same side to move on the slide 17, the moving sliding plate 19 drives the connecting plate 24 to rotate through the connecting arm 25, and the rotating connecting plate 24 pulls the sliding plate 19 on the other side to move on the slide 17 through the other connecting arm 25, so as to realize the simultaneous approach or away of the two sliding plates 19, and realize the central clamping of the lower cylinder body 2.

[0056] Further, a torsional spring 27 is sleeved on the pin shaft 21, one end of the torsional spring 27 is fixed with the bottom of the U-shaped seat 20, and the other end of the torsional spring 27 is fixed with the L-shaped clamping arm 22. Further, a torsional spring 27 is sleeved on the pin shaft 21, one end of the torsional spring 27 is fixed with the bottom of the U-shaped seat 20, and the other end of the torsional spring 27 is fixed with the L-shaped clamping arm 22.

[0057] In the process of clamping, the L-shaped clamping arm 22 is in contact with the lower cylinder body 2, improving the clamping tightness. After the lower cylinder body 2 is placed, the L-shaped clamping arm 22 is reset under the action of the torsion spring 27, facilitating secondary use.

[0058] Example 3:

[0059] Referring to Figure 5 , which is basically the same as example 2, further, the driving assembly comprises two rotating shaft seats 30 fixedly installed along the width direction of the top plate 9, a lead screw 31 is rotatably connected between the two rotating shaft seats 30 through bearings, one end of the lead screw 31 penetrates the rotating shaft seat 30 and is installed with a motor 32, a nut seat 33 is threadedly connected on the lead screw 31, and the nut seat 33 and the adjusting plate 1 are fixedly installed together; two slide bars 28 are fixedly installed on the two sides above the adjusting plate 1, and two slide groove seats 29 are fixedly installed on the two sides below the top plate 9, and the slide bars 28 are matched with sliding in the slide groove seats 29.

[0060] During the operation of the motor 32, the output end of the motor 32 drives the lead screw 31 to rotate, and since the slide bars 28 on both sides are slidingly connected in the slide groove seats 29, the rotation degree of the nut seat 33 is constrained, so that the adjusting plate 1 moves linearly on the lead screw 31 through the nut seat 33 to meet the adjustment of the radial gap.

[0061] Here, the working process of the whole text is described again:

[0062] When calibrating, the device is moved between the two bearing seats 6, the first laser emitter 5 on both sides emits a bundle of lines and penetrates the first light transmission hole 301 to directly shoot on the first laser receiver 14 on the receiving disc 7, the first laser receiver 14 converts the optical signal into an electrical signal, and the amplifier amplifies the output electrical signal to complete the calibration of the device, the second laser emitter 8 emits a bundle of lines and penetrates the second light transmission hole 302 to directly shoot on the second laser receiver 34 on the receiving disc 7 on the other side, the second laser receiver 34 converts the optical signal into an electrical signal, and the amplifier amplifies the output electrical signal to complete the calibration of the device, if there is an error between the lower cylinder body 2 and the bearing seats 6 on both sides, the output end of the motor 32 drives the lead screw 31 to rotate, and since the slide bars 28 on both sides are slidingly connected in the slide groove seats 29, the rotation degree of the nut seat 33 is constrained, so that the adjusting plate 1 moves linearly on the lead screw 31 through the nut seat 33 to meet the adjustment of the radial gap.

[0063] After the position is adjusted, when the lower cylinder 2 is placed, the slide rod 35 slides down in the second sleeve 36, the air bag 43 is pressed to shrink, the volume is reduced, the moving plate 38 moves up under the elastic potential energy of the first spring 13, and the universal wheel 40 is pulled into the second sleeve 36, so that the device will not move when the lower cylinder 2 is placed, thereby improving the accuracy of calibration, and at the same time, the compressed air is collected into the spray pipe 46 through the air outlet pipe 44 and sprayed out, blowing away the dust falling into the lower cylinder 2, improving the operation of the rotor.

[0064] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A center calibration device for turbine installation, comprising an adjusting plate (1) with a clamping assembly, wherein a lower cylinder (2) is clamped within the clamping assembly, characterized in that, Also includes: The calibration disks (3) are fixedly installed on both sides of the adjustment plate (1), and the first laser emitter (5) is installed on the opposite side of the calibration disks (3) on both sides through the mounting base (4); Two symmetrically mounted bearing seats (6) are each fixedly mounted with a receiving disk (7). A second laser emitter (8) is fixedly mounted on one side of the receiving disk (7), and a second laser receiver (34) is fixedly mounted on the other side of the receiving disk (7). A first laser receiver (14) is mounted on both sides of the receiving disk (7). The top plate (9) is set on the adjustment plate (1) and is slidably connected to the adjustment plate (1) through the drive assembly; Support components are fixedly installed at the four corners of the lower surface of the top plate (9); The calibration disk (3) has a plurality of first light-transmitting holes (301) and a plurality of second light-transmitting holes (302), and the first light-transmitting holes (301) and the second light-transmitting holes (302) are alternately arranged; The clamping assembly includes slides (17) fixedly installed on both sides of the adjusting plate (1). Slide plates (19) are slidably connected to both sides of the slides (17) via sliders (18). U-shaped seats (20) are fixedly installed at both ends of the slide plates (19). Pins (21) are fixedly connected inside the U-shaped seats (20). L-shaped clamping arms (22) are rotatably connected to the pins (21). The center of the adjusting plate (1) is rotatably connected to a connecting plate (24) via a rotating shaft (23), and the two ends of the connecting plate (24) are connected to the sliding plate (19) by connecting arms (25). The regulating plate (1) is equipped with a first cylinder (26), and the output end of the first cylinder (26) is fixedly connected to a sliding plate (19) on one side. The drive assembly includes two rotating shaft seats (30) fixedly installed along the width direction of the top plate (9). A lead screw (31) is rotatably connected between the two rotating shaft seats (30) via a bearing. One end of the lead screw (31) passes through the rotating shaft seat (30) and is fitted with a motor (32). A nut seat (33) is threaded onto the lead screw (31). The nut seat (33) is fixedly installed together with the adjusting plate (1). Slide bars (28) are fixedly installed on both sides above the adjusting plate (1), and slide groove seats (29) are fixedly installed on both sides below the top plate (9). The slide bars (28) slide within the slide groove seats (29). Each of the support members includes a slide rod (35) fixedly installed together with the top plate (9), the lower end of the slide rod (35) being slidably connected inside the second sleeve (36), and a crossbeam (41) being welded between the two sides of the second sleeve (36), on which a second cylinder (42) is installed, and the movable end of the second cylinder (42) being fixedly connected to the top plate (9).

2. The center calibration device for turbine installation according to claim 1, characterized in that, The mounting base (4) includes a support rod (10) welded to the center of the calibration disk (3). A receiving disk (11) is welded to the side of the support rod (10) away from the calibration disk (3). The receiving disk (11) is provided with mounting holes and a first sleeve (12) that matches the mounting holes along the circumferential direction. The first laser emitter (5) is installed in the first sleeve (12).

3. The center calibration device for turbine installation according to claim 2, characterized in that, Two clamping plates (15) are symmetrically arranged inside the first sleeve (12), and a telescopic rod (16) is connected between the two clamping plates (15) and the inner wall of the first sleeve (12).

4. The center calibration device for turbine installation according to claim 1, characterized in that, A torsion spring (27) is fitted on the pin (21). One end of the torsion spring (27) is fixed to the bottom of the U-shaped seat (20), and the other end of the torsion spring (27) is fixed to the L-shaped clamping arm (22).

5. The center calibration device for turbine installation according to claim 1, characterized in that, The second sleeve (36) is equipped with a clamp (37), the clamp (37) is equipped with an airbag (43), the airbag (43) is connected to an air outlet pipe (44), and the air outlet pipe (44) passes through the slide rod (35) to the adjusting plate (1); The nozzle (46) is mounted on the adjustment plate (1) via a support frame (45), and the end of the air outlet pipe (44) away from the slide bar (35) is connected to the nozzle (46).

6. The center calibration device for turbine installation according to claim 5, characterized in that, A moving plate (38) is slidably connected inside the second sleeve (36), and a support column (39) is fixedly installed below the moving plate (38). A caster wheel (40) is fixedly installed at one end of the support column (39) outside the second sleeve (36). A first spring (13) is fixedly connected between the motion plate (38) and the clamp (37).

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