A measuring and positioning device for steam turbine installation

Abstract

This invention discloses a measurement and positioning device for turbine installation, comprising various rotors; a laser emitting assembly, including a laser generator, is installed on the rotor located in the generator area; laser receiving assemblies, including coated glass, are installed on the rotors located in the high-pressure cylinder area, intermediate-pressure cylinder area, and low-pressure cylinder area; the coated glass has a centering hole in its center; and an upper fixing assembly is installed below the laser emitting and receiving assemblies. Through the cooperation of a solid support arm and a hollow support arm with extendable height, the laser generator and coated glass are lifted to the outside of the largest blade, allowing the laser beam to overcome obstacles and be received by the coated glass. This enables the laser to be used for shaft system calibration of the solid rotor, thereby completing the installation. Its structure is simple and inexpensive, and it can be widely used in various shaft system calibration and positioning installation applications.

Description

Technical Field

[0001] This invention relates to the field of steam turbine installation technology, and more specifically to a measuring and positioning device for steam turbine installation. Background Technology

[0002] A steam turbine is a power machine that converts the thermal energy of steam into rotational mechanical energy. It is one of the core components of modern thermal power plants, nuclear power plants, large ships, and certain industrial drive systems. Its cylinders, arranged sequentially according to the steam flow path, can be divided into high-pressure, intermediate-pressure, and low-pressure cylinders to withstand different pressures and temperatures. Inside each cylinder, moving blades are fixed via rotors and rotor discs, directly receiving steam impact and driving the rotor to rotate, thereby converting thermal energy into rotational mechanical energy.

[0003] In a steam turbine generator set, multiple rotors, such as a high-pressure rotor, a medium-pressure rotor, a low-pressure rotor, and a generator rotor, are usually connected by couplings to form a long shaft system. By aligning the rotors, a series of problems such as bearing damage, coupling damage, rotor damage, energy loss, and abnormal vibration can be avoided.

[0004] Patent CN209116978U discloses a center calibration device for steam turbine installation. It emits a laser beam through a laser emitter, then adjusts the height of the mounting base to move the laser beam to be collinear with the steam turbine installation center line, and then uses a laser receiving sensor to receive the laser beam. Together with a microcontroller, it determines whether the steam turbine is installed accurately, thus achieving the calibration purpose.

[0005] In the aforementioned patent's technical solution, the laser beam emitted by the laser emitter needs to pass through the turbine's shaft system to be detected by the laser receiving sensor; therefore, the turbine rotor must be a hollow structure. However, in practical applications, turbine rotors are generally solid structures, which offer higher torque transmission efficiency and strength. Since the laser beam cannot pass through a solid rotor and blades to be received by the laser receiving sensor, it is impossible to perform shaft system installation measurement and positioning on turbines with solid rotors, presenting certain limitations. Summary of the Invention

[0006] The purpose of this invention is to provide a measurement and positioning device for turbine installation, which solves the technical problem in the prior art that the laser beam cannot penetrate the solid rotor and blades, making it impossible to perform shaft alignment measurement and positioning installation for turbines with solid rotors.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] A measuring and positioning device for turbine installation includes various rotors; it also includes a laser emitting assembly on the rotor located in the generator area, the laser emitting assembly including a laser generator; laser receiving assemblies are provided on the rotors located in the high-pressure cylinder area, the intermediate-pressure cylinder area, and the low-pressure cylinder area, the laser receiving assemblies including coated glass; the coated glass has a centering hole; it also includes an upper fixing assembly located below the laser emitting assembly and the laser receiving assembly, and a lower fixing assembly connected to the upper fixing assembly; adjusting assemblies are provided between the upper fixing assembly and the laser emitting assembly, and between the upper fixing assembly and the laser receiving assembly, the adjusting assemblies including hollow support arms; solid support arms are inserted inside the hollow support arms.

[0009] Preferably, the laser emitting assembly further includes a mounting block; a clamp is fixedly connected to the upper part of the mounting block; and the laser generator is disposed inside the clamp.

[0010] Preferably, the laser receiving assembly further includes a rectangular insert rod, which is inserted into the upper end of a solid support arm located in the high-pressure cylinder area, medium-pressure cylinder area, or low-pressure cylinder area; a circular frame is fixed to the upper end of the rectangular insert rod; a coated glass is embedded inside the frame to reduce the brightness of the laser beam; a centering hole is opened in the coated glass, and the size of the centering hole is equal to the diameter of the laser beam.

[0011] Preferably, the upper fixing component includes an upper fixing block; the lower fixing component includes a lower fixing block; the upper fixing block and the lower fixing block together form a regular hexagonal structure, wherein the lower part of the upper fixing block presents a notch-shaped structure with one side missing, the notch having the same shape as the lower fixing block, and the rotor in each cylinder area is fitted into the center of the regular hexagonal structure.

[0012] Preferably, the upper fixing assembly further includes nut seats fixed to the center of the four sides of the upper fixing block; the nut seats are internally threaded with screws, the inner end of which penetrates the upper fixing block and abuts against the rotor; a rubber pad is provided at the inner end of the screw.

[0013] Preferably, the lower fixing component further includes a transparent hollow tube fixedly connected to the lower surface of the lower fixing block; a sliding rod is slidably connected inside the hollow tube; and a first scale is opened on the outer surface of the sliding rod along the length direction.

[0014] Preferably, the slide rod has a sliding cavity inside; a sliding block is provided on the lower end face of the hollow tube; and a spring is provided between the upper end of the sliding cavity and the sliding block.

[0015] Preferably, the adjustment assembly further includes a flat portion axially formed on the upper side of the solid support arm; a second butterfly-shaped set screw is threaded onto the upper part of the hollow support arm; a second scale is formed on the flat portion of the solid support arm; a digital display level is connected to the hollow support arm via a tubular sliding sleeve; the digital display level is fixed to the relative position on the hollow support arm by the first butterfly-shaped set screw in cooperation with the sliding sleeve.

[0016] Preferably, the laser generator emits a laser beam to sequentially irradiate the coated glass on each rotor. If the laser beam penetrates the coated glass in the high-pressure cylinder area with high brightness, it indicates that the turbine shaft alignment is complete. If the laser beam gradually penetrates the coated glass in the low-pressure cylinder area, the intermediate-pressure cylinder area, and the high-pressure cylinder area with low brightness, it indicates that there is a misalignment in the turbine shaft system, and further fine-tuning of each rotor is required.

[0017] Preferably, a laser beam is emitted by a laser generator and irradiates the coated glass. As the laser beam penetrates the coated glass in each cylinder area in turn, the brightness decreases. If the brightness of the laser beam is not the same in each cylinder area, it indicates that the laser beam is irradiating the coated glass in each cylinder area. The central axis of each rotor is relatively aligned, but not completely aligned. At this time, the position of the rotor in the high-pressure area can be finely adjusted according to the position of the rotor in the low-pressure area until the laser beam presents a straight line with the highest brightness. At this time, it is considered that the rotor in each cylinder area is aligned.

[0018] The beneficial effects of this invention are:

[0019] 1. This invention uses a combination of a solid support arm and a hollow support arm that can be extended in height to lift the laser generator and the coated glass to the outside of the largest blade, so that the laser beam can overcome the obstacle and be received by the coated glass. This allows the laser to be used to calibrate the shaft system of the solid rotor, thereby completing the installation. Its structure is simple and inexpensive, and it can be widely used in various shaft system calibration and positioning installation applications.

[0020] 2. By observing the changes in the brightness of the laser beam, this invention can accurately determine which rotor position in each cylinder area has shifted, assisting installers in accurately adjusting the rotor that has shifted position. This makes the shaft alignment process more convenient and can shorten the construction period.

[0021] 3. With this invention, installers can observe and measure the rotor's offset angle and offset distance based on the relative position of the laser beam and the centering hole, thereby assisting installers in adjusting the offset rotor position accordingly, resulting in higher adjustment accuracy.

[0022] 4. This invention allows the distance between the rotor and the edge of the lower fixed block to be determined by observing the first scale on the slide rod through a hollow tube made of transparent material. This makes it easier to quickly rotate the handwheel during maintenance if the shaft position deviates during the later use of the steam turbine, without the need for additional trial and error calibration, thus making maintenance more convenient.

[0023] 5. Since the upper and lower fixing blocks on each rotor form a regular hexagonal structure of the same size, when each rotor is located at the center of the regular hexagonal structure, the height of the hollow support arm fixed on the upper fixing block is the same, eliminating the need for adjustment due to the different sizes of each rotor, making it convenient to use. Attached Figure Description

[0024] The invention will now be further described with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a cross-sectional view of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the laser emitting component in this invention;

[0028] Figure 4 This is a schematic diagram of the structure of the laser receiving component in this invention;

[0029] Figure 5 This is a cross-sectional view of the lower fixing component in this invention;

[0030] In the picture:

[0031] 1. Upper fixing component; 101. Upper fixing block; 102. Nut seat; 103. Screw; 104. Rubber pad; 105. Handwheel;

[0032] 2. Lower fixing assembly; 201. Lower fixing block; 202. Hollow tube; 203. Slide rod; 204. First scale mark; 205. Sliding cavity; 206. Sliding block; 207. Spring; 208. Recess;

[0033] 3. Adjustment assembly; 301. Hollow support arm; 302. Solid support arm; 303. Sliding sleeve; 304. First butterfly set screw; 305. Digital display level; 306. Flat part; 307. Second scale; 308. Second butterfly set screw;

[0034] 4. Laser emitting assembly; 401. Clamp; 402. Wing bolt; 403. Laser generator; 404. Mounting block;

[0035] 5. Laser receiving assembly; 501. Frame; 502. Rectangular insert; 503. Coated glass; 504. Centering hole;

[0036] 6. Rotor. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Please see Figures 1-2 As shown, a measuring and positioning device for turbine installation includes rotors 6 located in the high-pressure cylinder area, intermediate-pressure cylinder area, low-pressure cylinder area, and generator area. A laser emitting component 4 is installed on the rotor 6 located in the generator area, and a laser receiving component 5 is installed on the rotors 6 located in the high-pressure cylinder area, intermediate-pressure cylinder area, and low-pressure cylinder area. The laser beam (visible beam) is calibrated and coordinated by the laser emitting component 4 and the laser receiving component 5 to achieve calibration and alignment of the rotors 6 located in the high-pressure cylinder area, intermediate-pressure cylinder area, low-pressure cylinder area, and generator area.

[0039] Please refer to it again. Figures 3-4 As shown, a measuring and positioning device for turbine installation also includes an upper fixing component 1 disposed below the laser emitting component 4 and the laser receiving component 5, and a lower fixing component 2 connected to the upper fixing component 1. The upper fixing component 1 and the lower fixing component 2 cooperate with each other to fix the laser emitting component 4 and the laser receiving component 5 onto the corresponding rotor 6.

[0040] Please refer to it again. Figures 3-4 As shown, an adjustment component 3 is provided between the upper fixing component 1 and the laser emitting component 4, and between the upper fixing component 1 and the laser receiving component 5. The adjustment component 3 is used to adjust the height of the laser emitting component 4 and the laser receiving component 5.

[0041] Please refer to it again. Figure 3 As shown, the upper fixing component 1 includes an upper fixing block 101; the lower fixing component 2 includes a lower fixing block 201; the upper fixing block 101 and the lower fixing block 201 together form a regular hexagonal structure, wherein the lower part of the upper fixing block 101 presents a notch-shaped structure with one side missing, the notch is the same shape as the lower fixing block 201, and is snapped together by a dovetail groove, and the rotor 6 in each cylinder area is sleeved in the center of the regular hexagonal structure formed by the upper fixing block 101 and the lower fixing block 201.

[0042] Please refer to it again. Figure 3As shown, in order to ensure that the rotors 6 in each cylinder area can be fitted into the center of the regular hexagonal structure formed by the upper fixing block 101 and the lower fixing block 201, nut seats 102 are fixedly connected to the center of each of the four sides of the upper fixing block 101. A screw 103 is threaded into the nut seat 102, and the inner end of the screw 103 penetrates the upper fixing block 101 and abuts against the rotor 6. By adjusting the same parameters (number of rotations of the screw 103) of the four screws 103, the rotor 6 is positioned at the center of the regular hexagonal structure formed by the upper fixing block 101 and the lower fixing block 201. Furthermore, a rubber pad 104 is provided at the inner end of the screw 103. This rubber pad 104 deforms upon contact with the rotor 6, resulting in a perfect fit and ensuring that the laser emitting assembly 4 is stably fixed to the rotor 6. Furthermore, each screw 103 is fixedly connected to a handwheel 105 at its outer end. The handwheel 105 assists the operator in rotating the screw 103 to fix the positions of the upper fixing block 101 and the lower fixing block 201.

[0043] Please refer to it again. Figures 3-5 As shown, the lower fixing assembly 2 also includes a hollow tube 202 of transparent material, specifically acrylic material, fixedly connected to the lower surface of the lower fixing block 201; a slide rod 203 is slidably connected inside the hollow tube 202, the upper end of which abuts against the rotor 6; a first scale 204 is provided on the outer surface of the slide rod 203 along its length, used to measure the distance of the rotor 6 from each side of the regular hexagon formed by the upper fixing block 101 and the lower fixing block 201. A sliding cavity 205 is provided inside the slide rod 203; a sliding block 206 is provided on the lower end face of the hollow tube 202, the shape of which fits the sliding cavity 205; a spring 207 is provided between the upper end of the sliding cavity 205 and the sliding block 206; the spring 207 is used to push the slide rod 203 to abut against the rotor 6. Furthermore, the lower outer surface of the slide bar 203 is provided with symmetrically arranged recesses 208, which facilitates the operator to pinch the slide bar 203 and slide it downwards, thereby installing the upper and lower fixing components 2.

[0044] Please refer to it again. Figures 3-4As shown, the adjusting component 3 includes a hollow support arm 301, which is fixed to the upper edge of the upper fixing block 101, thus connecting the adjusting component 3 with the upper fixing component 1. A solid support arm 302 is inserted inside the hollow support arm 301. A flat portion 306 is formed on the upper side of the solid support arm 302 along the axial direction. A second butterfly-shaped set screw 308 is threaded onto the upper part of the hollow support arm 301. The inner end of the second butterfly-shaped set screw 308 abuts against the flat portion 306 of the solid support arm 302, thereby fixing the relative position between the hollow support arm 301 and the solid support arm 302. Furthermore, a second scale 307 is formed on the flat portion 306 of the solid support arm 302, which can assist the operator in accurately adjusting the relative position between the hollow support arm 301 and the solid support arm 302. A digital display level 305 is connected to the hollow support arm 301 via a tubular sliding sleeve 303. The digital display level 305 is fixed to the relative position on the hollow support arm 301 by the first butterfly set screw 304 in conjunction with the sliding sleeve 303. The digital display level 305 is used to assist the operator in observing and adjusting whether it is perpendicular to the horizontal plane, thereby ensuring that the solid support arm 302 is upright on the rotor 6.

[0045] Please refer to it again. Figure 3 As shown, the laser emitting assembly 4 includes a mounting block 404, which is inserted into the upper end of the solid support arm 302 located in the generator area, thereby realizing the connection between the laser emitting assembly 4 and the adjustment assembly 3; a clamp 401 is fixedly connected to the upper part of the mounting block 404; a laser generator 403 is provided inside the clamp 401, with a laser wavelength of 532nm and a power of 3-5mW. It can be noted that the laser beam is clearer in environments such as dust, fog, or smoke; the clamp 401 is tightened by a wing bolt 402 to fix the laser generator 403.

[0046] Please refer to it again. Figure 4 As shown, the laser receiving component 5 includes a rectangular insert 502, which is inserted into the upper end of a solid support arm 302 located in the high-pressure cylinder area, medium-pressure cylinder area, or low-pressure cylinder area, thereby realizing the connection between the laser receiving component 5 and the adjustment component 3; a circular frame 501 is fixedly connected to the upper end of the rectangular insert 502; a coated glass 503 (which can be a neutral density filter, light-absorbing coated glass 503, etc.) is embedded inside the frame 501, which can reduce the brightness of the laser beam; a centering hole 504 is opened in the center of the coated glass 503, and the size of the centering hole 504 is equal to the diameter of the laser beam.

[0047] To facilitate understanding of the above technical solutions of the present invention, the working principle or operation method of the measurement and positioning for turbine installation in actual practice will be described in detail below:

[0048] S100: First, place the rotors 6 of the high-pressure cylinder area, medium-pressure cylinder area, low-pressure cylinder area, and generator area into roughly aligned positions.

[0049] S200: Multiple sets of upper fixed components 1, together with lower fixed components 2, are fixed on rotors 6 of different specifications in the high-pressure cylinder area, medium-pressure cylinder area, low-pressure cylinder area, and generator area, respectively.

[0050] S300: Adjust the height of the upper part of the adjustment component 3 above each upper fixed component 1 to a horizontal line.

[0051] S400: First, install the laser emitting component 4 on the upper part of the regulating component 3 in the generator area, and then install the laser receiver on the rotor 6 in the low-pressure cylinder area, the medium-pressure cylinder area and the high-pressure cylinder area in sequence.

[0052] S500: Activate the laser emitting component 4 to emit a laser beam, which sequentially illuminates the laser receiving components 5 on each rotor 6. If the laser beam penetrates the laser receiving component 5 located in the high-pressure cylinder area with high brightness, it indicates that the turbine shaft alignment is complete and installation can proceed. If the laser beam gradually penetrates the laser receiving components 5 located in the low-pressure cylinder area, intermediate-pressure cylinder area, and high-pressure cylinder area with decreasing brightness, it indicates that there is a misalignment in the turbine shaft system, and further fine-tuning of each rotor 6 is required.

[0053] In step S100, the operator uses a crane to fix each rotor 6 and the blades on the rotor 6 inside each cylinder. Through visual observation, the operator roughly adjusts the rotors 6 in each area to a horizontal straight line.

[0054] Step S200 can be specifically divided into the following steps:

[0055] A100: Rotate the four handwheels 105 to make the inner end of the screw 103 turn outward until the distance between the diagonal ends of the screw 103 is greater than the diameter of the rotor 6.

[0056] A200: Since the upper fixing block 101 and the lower fixing block 201 are connected by a dovetail groove, when installing the upper and lower fixing components 2, the lower fixing block 201 can be removed from the upper fixing block 101, and then the upper fixing block 101 can be fitted onto the rotor 6 from top to bottom through the notch on it; at this time, pinch the lower end recess 208 of the slide rod 203 and slide it downwards, and then reinstall the lower fixing block 201 onto the upper fixing block 101, so that the rotor 6 can be fitted inside the regular hexagonal structure formed by the upper fixing block 101 and the lower fixing block 201.

[0057] It is worth noting here that when the installer pinches the lower recess 208 of the slide rod 203 and slides it downwards, and reinstalls the lower fixing block 201 onto the upper fixing block 101, the force applied to the recess 208 can be released. Under the action of the spring 207, the slide rod 203 moves closer to and abuts against the surface of the rotor 6 inside the hollow tube 202. At this time, the first scale 204 on the slide rod 203 can be observed through the transparent hollow tube 202, thus determining the distance between the rotor 6 and the edge of the lower fixing block 201. This facilitates quick rotation of the handwheel 105 during maintenance if the shaft position deviates during the later use of the turbine, eliminating the need for additional trial and error calibration, making maintenance more convenient.

[0058] A400: The four handwheels 105 are rotated diagonally to drive the rubber pads 104 at the inner end of the screws 103 to rotate towards the surface of the rotor 6 until they come into contact. When the four handwheels 105 rotate the same number of times and all the rubber pads 104 at the inner end of the screws 103 are firmly pressed against the rotor 6, the rotor 6 is firmly fixed in the center of the regular hexagonal structure formed by the upper fixing block 101 and the lower fixing block 201 in a sleeved form.

[0059] It is worth noting here that since the hexagonal structure formed by the upper fixing block 101 and the lower fixing block 201 on each rotor 6 is the same size, when each rotor 6 is located at the center of the hexagonal structure, the height of the hollow support arm 301 fixed on the upper fixing block 101 is the same, and there is no need to adjust it due to the different sizes of each rotor 6, making it convenient to use.

[0060] In step S300, the second butterfly-shaped set screw 308 is loosened outwards to release the tightness between the second butterfly-shaped set screw 308 and the solid support arm 302. Then, the solid support arm 302 is slid upwards within the hollow support arm 301 until the upper end of the solid support arm 302 is higher than the height of the largest diameter blade in each cylinder area. The second butterfly-shaped set screw 308 is then tightened back into contact with the solid support arm 302. At this point, the position of the second scale 307 is observed to help adjust the relative positions of the solid support arm 302 and the hollow support arm 301 in each cylinder area, ensuring that the total length of the solid support arm 302 and the hollow support arm 301 after adjustment is the same in each cylinder area. Furthermore, a digital level 305 is used to assist the operator in adjusting the angle of the solid support arm 302 to ensure it is perpendicular to the horizontal plane.

[0061] It is worth noting here that since the solid support arm 302 has a flat portion 306, it can not only help the second butterfly-shaped set screw 308 to abut against the solid support arm 302, thus fixing the relative position between the solid support arm 302 and the hollow support arm 301, but also help the first butterfly-shaped set screw 304 to abut against the solid support arm 302, thereby fixing the relative position between the digital display level 305 and the solid support arm 302.

[0062] In step S400, the specific steps are as follows: First, the mounting block 404 is inserted into the upper end of the solid support arm 302 inside the generator area. Then, the laser generator 403 is fixed to the mounting block 404 by the cooperation of the clamp 401 and the wing bolt 402, and the laser emitting end of the laser generator 403 is directed towards the high-pressure cylinder area. After that, the rectangular plug rod 502 is inserted into the upper end of the solid support arm 302 located in the low-pressure, medium-pressure and high-pressure cylinder areas in sequence, so that the laser beam can irradiate the inside of each frame 501.

[0063] It is worth noting here that the specifications of the laser emitting component 4 and each laser receiving component 5 are matched. That is, after the mounting block 404 and the rectangular plug 502 are respectively inserted into the upper end of the solid support arm 302, the distance between the height of the laser beam of the laser generator 403 and the upper end face of the solid support arm 302 is equal to the distance between the height of the centering hole 504 and the upper end face of the solid support arm 302.

[0064] In step 500, a laser beam is emitted by the laser generator 403, illuminating the coated glass 503. Because the surface of the coated glass 503 has a uniform layer of metal oxide, such as chromium, nickel, or stainless steel, it absorbs the laser beam proportionally without changing the beam's propagation angle. This causes the brightness of the laser beam to decrease as it penetrates the coated glass 503 in each cylinder area. Therefore, if the laser beam irradiates from the generator area to the high-pressure cylinder area, and the brightness of the laser beam is different in each cylinder area, it indicates that the laser beam is irradiating the coated glass 503 in each cylinder area. The central axes of each rotor 6 are relatively aligned, but not perfectly aligned. At this point, the position of the rotor 6 in the high-pressure area can be finely adjusted based on the position of the rotor 6 in the low-pressure area (this is determined by the cylinder volume, i.e., the cylinder volume in the high-pressure area is smaller than that in the low-pressure area) until the laser beam forms a straight line with the highest brightness. At this point, the rotor 6 in each cylinder area can be considered aligned, and subsequent installation steps can proceed.

[0065] Furthermore, by observing the brightness of the laser beam within each cylinder area, if the brightness of the laser beam is consistent in two or three consecutive cylinder areas, it indicates that there is a deviation in the position of rotor 6 in those cylinder areas, which can remind the installer to precisely fine-tune the position of rotor 6 that has shifted.

[0066] It is worth noting here that when the laser beam shines from the generator area to the high-pressure cylinder area, two situations may occur that result in the brightest laser beam. One is that the laser beam is aligned with the centering hole 504 at the center of all the coated glass 503, in which case the turbine shaft alignment is considered complete. The other is that the laser beam is not aligned with all the coated glass 503, that is, the laser beam shines on the outside of the coated glass 503. Since the positional deviation between the rotors 6 is relatively large at this time, the probability is small and can be observed with the naked eye. This result can be almost ignored.

[0067] In the turbine installation measurement and positioning device provided by this invention, the laser generator 403 and the coated glass 503 are lifted to the outside of the largest blade by the cooperation of the solid support arm 302 and the hollow support arm 301, which can be extended in height. This allows the laser beam to overcome obstacles and be received by the coated glass 503, thereby enabling the laser to be used to calibrate the shaft system of the solid rotor 6 and complete the installation. Its structure is simple and inexpensive, and it can be widely used in various shaft system calibration and positioning installation applications. Furthermore, by observing the changes in the brightness of the laser beam, it is possible to accurately determine which rotor 6 in each cylinder area has shifted position, assisting installers in accurately adjusting the rotor 6 that has shifted position. This makes the shaft alignment process more convenient and shortens the construction period. Moreover, based on the relative position of the laser beam and the alignment hole 504, installers can observe and measure the offset angle and offset distance of the rotor 6, thereby assisting installers in adjusting the position of the offset rotor 6 accordingly, resulting in higher adjustment accuracy.

[0068] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0069] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A measuring and positioning device for turbine installation, comprising various rotors (6); characterized in that: It also includes a laser emitting assembly (4) installed on the rotor (6) located in the generator area, the laser emitting assembly (4) including a laser generator (403); A laser receiving component (5) is provided on the rotor (6) located in the high-pressure cylinder area, the medium-pressure cylinder area and the low-pressure cylinder area. The laser receiving component (5) includes a coated glass (503); the coated glass (503) has a centering hole (504) in the center. It also includes an upper fixing component (1) disposed below the laser emitting component (4) and the laser receiving component (5), and a lower fixing component (2) connected to the upper fixing component (1); An adjustment component (3) is provided between the upper fixing component (1) and the laser emitting component (4), and between the upper fixing component (1) and the laser receiving component (5). The adjustment component (3) includes a hollow support arm (301); a solid support arm (302) is inserted inside the hollow support arm (301).

2. The measuring and positioning device for turbine installation according to claim 1, characterized in that: The laser emitting assembly (4) also includes a mounting block (404); a clamp (401) is fixedly connected to the upper part of the mounting block (404); and a laser generator (403) is disposed inside the clamp (401).

3. The measuring and positioning device for turbine installation according to claim 1, characterized in that: The laser receiving assembly (5) further includes a rectangular insert (502), which is inserted into the upper end of a solid support arm (302) located in the high-pressure cylinder area, medium-pressure cylinder area or low-pressure cylinder area; a circular frame (501) is fixed to the upper end of the rectangular insert (502); a coated glass (503) is embedded inside the frame (501) to reduce the brightness of the laser beam; a centering hole (504) is opened in the coated glass (503), and the size of the centering hole (504) is equal to the diameter of the laser beam.

4. The measuring and positioning device for turbine installation according to claim 1, characterized in that: The upper fixing component (1) includes an upper fixing block (101); the lower fixing component (2) includes a lower fixing block (201); the upper fixing block (101) and the lower fixing block (201) together form a regular hexagonal structure, wherein the lower part of the upper fixing block (101) presents a notch-shaped structure with one side missing, and the notch has the same shape as the lower fixing block (201), and the rotor (6) in each cylinder area is fitted inside the center of the regular hexagonal structure.

5. The measuring and positioning device for turbine installation according to claim 4, characterized in that: The upper fixing assembly (1) also includes nut seats (102) fixed to the center of the four sides of the upper fixing block (101); the nut seats (102) are threadedly connected to a screw (103), the inner end of which penetrates the upper fixing block (101) and abuts against the rotor (6); a rubber pad (104) is provided at the inner end of the screw (103).

6. The measuring and positioning device for turbine installation according to claim 4, characterized in that: The lower fixing component (2) also includes a transparent hollow tube (202) fixedly connected to the lower surface of the lower fixing block (201); a slide rod (203) is slidably connected inside the hollow tube (202); a first scale (204) is opened on the outer surface of the slide rod (203) along the length direction.

7. A measuring and positioning device for turbine installation according to claim 6, characterized in that: The slide rod (203) has a sliding cavity (205) inside; a sliding block (206) is estimated to be on the lower end face of the hollow tube (202); a spring (207) is provided between the upper end of the sliding cavity (205) and the sliding block (206).

8. A measuring and positioning device for turbine installation according to claim 6, characterized in that: The adjustment assembly (3) further includes a flat portion (306) axially opened on the upper side of the solid support arm (302); a second butterfly set screw (308) is threaded onto the upper part of the hollow support arm (301); a second scale (307) is opened on the flat portion (306) of the solid support arm (302); a digital display level (305) is connected to the hollow support arm (301) via a tubular sliding sleeve (303); the digital display level (305) is fixed to the relative position on the hollow support arm (301) by the first butterfly set screw (304) in cooperation with the sliding sleeve (303).

9. A measuring and positioning device for turbine installation according to any one of claims 1, characterized in that: The laser generator (403) emits a laser beam to irradiate the coated glass (503) on each rotor (6) in sequence. If the laser beam penetrates the coated glass (503) located in the high-pressure cylinder area with high brightness, it indicates that the turbine shaft alignment is complete. If the laser beam gradually penetrates the coated glass (503) located in the low-pressure cylinder area, the intermediate-pressure cylinder area and the high-pressure cylinder area with low brightness, it indicates that there is a misalignment in the turbine shaft system and it is necessary to continue to fine-tune each rotor (6).

10. A measuring and positioning device for turbine installation according to any one of claims 1, characterized in that: A laser beam is emitted by a laser generator (403) and irradiates the coated glass (503). The brightness of the laser beam decreases as it passes through the coated glass (503) in each cylinder area. If the brightness of the laser beam is different in each cylinder area, it means that the laser beam is irradiating the coated glass (503) in each cylinder area. The central axis of each rotor (6) is relatively aligned, but not completely aligned. At this time, the position of the rotor (6) in the high-pressure area can be finely adjusted according to the position of the rotor (6) in the low-pressure area until the laser beam appears as a straight line with the highest brightness. At this time, it is considered that the rotor (6) in each cylinder area is aligned.

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