Steam turbine rotor lifting device

Abstract

The utility model discloses a steam turbine rotor lifting device, and relates to the technical field of rotor lifting equipment, the steam turbine rotor lifting device comprises a lifting machine, an angle adjusting assembly is installed on the lifting machine, the angle adjusting assembly comprises a fixing frame arranged in the lifting machine, and a gear box is fixedly connected to the interior of the fixing frame through a fixing plate; the upper side wall and the lower side wall of the gear box are rotationally connected with lifting plates, the inner walls of the upper side and the lower side of the gear box are rotationally connected with first conical teeth fixedly connected with the lifting plates, and the inner side wall of the gear box is rotationally connected with second conical teeth meshed with the two first conical teeth. According to the lifting device, the lifting plate, the iron chain and the steam turbine rotor form an approximately inverted triangle structure, so that the shaking amplitude of the steam turbine rotor is effectively reduced, and the anti-rotation function of the steam turbine rotor and the clamping stability of the iron chain on the steam turbine rotor in the lifting process can be improved through the adsorption assembly and the clamping assembly.

Description

Technical Field

[0001] The present application relates to the technical field of rotor lifting equipment, and in particular to a steam turbine rotor lifting device. Background Art

[0002] Steam turbine rotor lifting refers to lifting the turbine rotor from the ground or other locations with a crane or lifting equipment and installing it in the required location or equipment. When lifting the turbine rotor, it is necessary to strictly abide by the relevant operating procedures and safety standards to ensure that the operation process is safe and reliable. Normally, steam turbine rotor lifting needs to be operated by experienced professionals and equipped with corresponding safety equipment and tools to ensure that the lifting process goes smoothly and avoid accidents. Before lifting, the lifting work needs to be carefully planned and prepared, including determining the lifting point, checking the integrity of the lifting equipment and equipment, and formulating detailed operating procedures to ensure the safe and smooth progress of the lifting work.

[0003] For example, the steam turbine rotor lifting tool disclosed in patent number CN218320278U has the following shortcomings in actual use:

[0004] In order to solve the problem of rotor falling off, this device has a high structural cost and a limited anti-falling effect. In addition, the device still adopts a hook lifting method. When the turbine rotor is lifted off the ground, it shakes in the air, causing the turbine rotor to easily bump into each other. Utility Model Content

[0005] In order to improve the problem of a steam turbine rotor shaking in the air when it is lifted off the ground, the present application provides a steam turbine rotor lifting device.

[0006] The steam turbine rotor lifting device provided in this application adopts the following technical solution:

[0007] A steam turbine rotor lifting device includes a hoist, on which an angle adjustment component is installed, the angle adjustment component includes a fixed frame arranged inside the hoist, a gear box is fixedly connected to the inside of the fixed frame through a fixed plate, upper and lower side walls of the gear box are rotatably connected to hanging plates, upper and lower inner walls of the gear box are rotatably connected to first bevel teeth fixedly connected to the hanging plates, the inner wall of the gear box is rotatably connected to second bevel teeth meshing with two first bevel teeth, a fixing pipe is fixedly connected between the upper and lower side walls of the fixed frame and the hoist, a stabilizing component is arranged on the fixing pipe, a motor is fixedly connected to the upper side wall of the hoist, an output end of the motor is fixedly connected to the hanging plate through a rotating shaft, iron chains are fixedly connected to both ends of the two hanging plates, and an adsorption component and a clamping component are arranged between two adjacent iron chains.

[0008] By adopting the above technical solution, the angle between the two hanging plates can be adjusted by a motor, so that the iron chain can be unfolded to lift the turbine rotor, effectively reducing the shaking of the turbine rotor after lifting.

[0009] Preferably, the adsorption assembly includes an adsorption sleeve fixedly connected to the iron chain, a plurality of evenly distributed cannulas are inserted into the adsorption sleeve, the upper ends of the plurality of cannulas are all connected to suction cups, an air pipe is fixedly connected to the side wall of the adsorption sleeve, and a sealing cap is threadedly connected to the air pipe.

[0010] By adopting the above technical solution, the steam turbine rotor can be effectively adsorbed, the fixing effect of the steam turbine rotor can be improved, and the steam turbine rotor can be prevented from rotating during the lifting process.

[0011] Preferably, the clamping assembly comprises a clamping box sleeved on two iron chains, and two pulleys in contact with the iron chains are fixedly connected to inner walls on both sides of the clamping box.

[0012] By adopting the above technical solution, after the hanging plate is unfolded, the clamping force of the iron chain on the steam turbine rotor can be improved, so that the steam turbine rotor is more stable when being lifted.

[0013] Preferably, a partition block is fixedly connected inside the clamping box, a limiting plate is slidably connected inside the partition block, a connecting column is fixedly connected to the upper end of the limiting plate, the upper end of the connecting column passes through the partition block and is fixedly connected to a trapezoidal block, the trapezoidal block is arranged to be a trapezoidal structure, and the small area end of the trapezoidal block is arranged downward.

[0014] By adopting the above technical solution, it is possible to effectively prevent the iron chain from loosening after clamping the turbine rotor.

[0015] Preferably, the stabilizing assembly includes a rotating sleeve rotatably connected to the fixing pipe, and a stabilizing rod is fixedly connected between the rotating sleeve and the hanging plate.

[0016] By adopting the above technical solution, the stability of the hanging plate structure can be effectively improved.

[0017] In summary, the present application includes at least one of the following beneficial technical effects:

[0018] 1. When the steam turbine rotor shakes, the rotation angle of the hanging plate can be adjusted by the motor, so that an approximately inverted triangle structure is formed between the hanging plate, the iron chain and the steam turbine rotor, thereby effectively reducing the shaking amplitude of the steam turbine rotor.

[0019] 2. The adsorption assembly and the clamping assembly can improve the anti-self-rotation function of the steam turbine rotor and the stability of the iron chain clamping the steam turbine rotor during the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional image of the present application;

[0021] Figure 2 This is a schematic diagram of the structure of the angle adjustment component of this application;

[0022] Figure 3 This is the appearance diagram of the adsorption component of this application;

[0023] Figure 4 This is a schematic diagram of the internal structure of the adsorption component of this application;

[0024] Figure 5 This is a schematic diagram of the structure of the clamping assembly of this application;

[0025] Figure 6 This is a diagram of the state of the hanging plate after rotation for this application.

[0026] Reference numerals: 1. crane;

[0027] 2. Angle adjustment assembly; 201. Fixed frame; 202. Gear box; 203. Fixed plate; 204. Hanging plate; 205. First bevel gear; 206. Second bevel gear; 207. Fixed tube; 208. Motor; 209. Rotating shaft;

[0028] 3. Stabilizing assembly; 301. Rotating sleeve; 302. Stabilizing rod;

[0029] 4. Iron chain;

[0030] 5. adsorption assembly; 501. adsorption sleeve; 502. cannula; 503. suction cup; 504. trachea; 505. sealing cap;

[0031] 6. Clamping assembly; 601. Clamping box; 602. Pulley; 603. Separating block; 604. Limiting plate; 605. Connecting column; 606. Trapezoidal block. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-5 This application is described in further detail.

[0033] The embodiment of the present application discloses a steam turbine rotor lifting device.

[0034] Example 1

[0035] Reference Figure 1 , 26. A steam turbine rotor lifting device includes a hoist 1, on which an angle adjustment component 2 for reducing the amplitude of the steam turbine rotor is installed. The angle adjustment component 2 includes a fixed frame 201 arranged between the upper and lower side walls of the hoist 1, and the front and rear side inner walls of the fixed frame 201 are fixedly connected to a gear box 202 through a fixed plate 203 fixedly connected thereto, and the upper and lower side inner walls of the gear box 202 are rotationally connected to a side wall opposite to the two hanging plates 204 through a bearing, and the upper and lower side inner walls of the gear box 202 are both rotationally connected to a first bevel gear 205 fixedly connected to the side wall opposite to the two hanging plates 204, and the upper and lower side inner walls of the gear box 202 are both rotationally connected to the first bevel gear 205, and the left side inner wall of the gear box 202 is rotationally connected to a second bevel gear 206, and the second bevel gear 206 is meshed with the two first bevel gears 205, and when one of the hanging plates 204 rotates, it will be rotated through the first bevel gear 206. 05 and the meshing of the second bevel gear 206 drive the other hanging plate 204 to reverse at the same angle. A fixing pipe 207 is fixedly connected between the upper and lower side walls of the fixing frame 201 and the hoist 1, so that the fixing frame 201 is fixedly connected to the upper and lower inner walls of the hoist 1 through the fixing pipe 207. A stabilizing component 3 for improving the stability of the hanging plate 204 is arranged on the fixing pipe 207. A motor 208 is fixedly connected to the upper side wall of the hoist 1. The structure and principle of the motor 208 are both existing technologies and are not repeated here. The output end of the motor 208 is connected to the hanging plate 204 through a rotating shaft 209 fixedly connected thereto. The lower end of the rotating shaft 209 is fixedly connected to the hanging plate 204 by bolts. Both ends of the two hanging plates 204 are fixedly connected with iron chains 4 by means of welded hooks. An adsorption component 5 for preventing the rotation of the turbine rotor and a clamping component 6 for clamping the turbine rotor are arranged between two adjacent iron chains 4.

[0036] Through the above arrangement, the upper hanging plate 204 is driven to rotate by the motor 208. When the hanging plate 204 rotates, it drives the upper first bevel gear 205, and the upper first bevel gear 205 drives the second bevel gear 206 to rotate, so that the second bevel gear 206 drives the lower first bevel gear 205 to rotate, and then drives the lower hanging plate 204 to rotate in the opposite direction at the same angle, so that the two ends of the two hanging plates 204 are unfolded. After the turbine rotor is fixed at the lower end of the iron chain 4, the hanging plate 204, the iron chain 4 and the turbine rotor will present an approximate triangle. Through the principle that the triangle has stability, the shaking amplitude of the turbine rotor is effectively reduced.

[0037] Reference Figure 3-4 The adsorption assembly 5 includes an adsorption sleeve 501 fixedly connected to the iron chain 4 by bolts, and a plurality of evenly distributed and connected inserting tubes 502 are inserted into the adsorption sleeve 501, and the upper ends of the plurality of inserting tubes 502 are all connected to suction cups 503, and an air pipe 504 is fixedly connected and connected to the side wall of the adsorption sleeve 501, and a sealing cap 505 is threadedly connected to the air pipe 504.

[0038] Through the above arrangement, multiple suction cups 503 can be used to effectively adsorb the surface of the steam turbine rotor, thereby preventing the steam turbine rotor from rotating during the lifting process to a certain extent, thereby improving the stability of the steam turbine rotor during lifting. Through the air pipe 504 and the sealing cap 505, the outside air can quickly enter the suction cup 503, helping the staff to quickly release the adsorption force between the suction cup 503 and the steam turbine rotor.

[0039] It is worth noting that the adsorption sleeve 501 can be made of elastic material, and the elastic material can be made of elastic thin sheet stainless steel, which can improve the adsorption of multiple suction cups 503 to the surface of the turbine rotor. In order to improve the load-bearing performance of the adsorption sleeve 501, the lower ends of the two iron chains 4 can also be passed through the adsorption sleeve 501 and welded together.

[0040] Reference Figure 5 The clamping assembly 6 includes a clamping box 601 mounted on two iron chains 4, and two pulleys 602 are fixedly connected to the inner walls on the left and right sides of the clamping box 601, and the two pulleys 602 are in contact with the iron chain 4. The pulleys 602 can effectively reduce the friction between the iron chain 4 and the clamping box 601, and a partition block 603 is fixedly connected between the front and rear inner walls of the clamping box 601. A cavity is excavated inside the partition block 603, and a limiting plate 604 for limiting the connecting column 605 is slidably connected inside the cavity. A connecting column 605 is fixedly connected to the side wall of the limiting plate 604, and the upper end of the connecting column 605 passes through the partition block 603 and is fixedly connected to a trapezoidal block 606. The trapezoidal block 606 is set to a trapezoidal structure, and the small end of the trapezoidal block 606 is set downward.

[0041] Through the above arrangement, when the two chains 4 are separated, the squeezing force on the clamping box 601 when the two chains 4 are unfolded will drive the clamping box 601 to move downward, thereby increasing the squeezing force of the chains 4 and the adsorption sleeve 501 on the turbine rotor, making the turbine rotor clamped more stably.

[0042] The stabilizing component 3 includes a rotating sleeve 301 rotatably connected to the side wall of the fixed tube 207 via a bearing, and two symmetrically arranged stabilizing rods 302 are fixedly connected between the side wall of the rotating sleeve 301 and the upper side wall of the hanging plate 204 via bolts.

[0043] Through the above arrangement, when the hanging plate 204 rotates, the stabilizing rod 302 will also drive the rotating sleeve 301 to rotate synchronously. By using two stabilizing rods 302, the lifting stability of the hanging plate 204 can be effectively improved.

[0044] Among them, the device also includes switches, power supplies, wires and other devices, which are not the main technologies and will not be described in detail.

[0045] The implementation principle of the steam turbine rotor lifting device of the embodiment of the present application is as follows: the staff places the steam turbine rotor between two adsorption sleeves 501, and uses the suction cup 503 to adsorb the steam turbine rotor to a certain extent to prevent the steam turbine rotor from rotating during the lifting process, and then the staff starts the lifting machine 1, and lifts the steam turbine rotor through the hanging plate 204 and the iron chain 4;

[0046] When the turbine rotor shakes, the staff can start the motor 208 to drive the hanging plate 204 to rotate. When the hanging plate 204 rotates, the first bevel gear 205 on the upper side is driven to rotate, and the first bevel gear 205 on the upper side drives the second bevel gear 206 to rotate, so that the second bevel gear 206 drives the first bevel gear 205 on the lower side to rotate, and then drives the hanging plate 204 on the lower side to rotate in the opposite direction at the same angle, so that the two hanging plates 204 drive the iron chain 4 to unfold. The state of the two hanging plates 204 after rotation is as follows Figure 6 As shown, after the multiple iron chains 4 are unfolded, the hanging plate 204, the iron chains 4 and the steam turbine rotor will present an approximate triangle, and the shaking amplitude of the steam turbine rotor can be effectively reduced by the principle that the triangle has stability;

[0047] At the same time, after the iron chain 4 is unfolded, it will squeeze the clamping box 601, so that the clamping box 601 can move downward, thereby increasing the squeezing force of the iron chain 4 and the adsorption sleeve 501 on the turbine rotor. Since the trapezoidal block 606 will not move due to the friction between the iron chain 4, the clamping box 601 can only move downward but cannot move upward. The clamping force between the clamping box 601 and the trapezoidal block 606 is used to effectively clamp the iron chain 4, effectively preventing the clamping force on the turbine rotor from decreasing.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A steam turbine rotor lifting device, comprising a lifting machine (1), characterized in that: The hoist (1) is provided with an angle adjustment assembly (2), the angle adjustment assembly (2) comprising a fixed frame (201) arranged inside the hoist (1), a gear box (202) being fixedly connected inside the fixed frame (201) via a fixed plate (203), upper and lower side walls of the gear box (202) being rotatably connected to a hanging plate (204), upper and lower side inner walls of the gear box (202) being rotatably connected to first bevel gears (205) fixedly connected to the hanging plate (204), and the inner wall of the gear box (202) being rotatably connected to two first bevel gears ( 205) meshing with the second bevel gear (206), a fixing tube (207) is fixedly connected between the upper and lower side walls of the fixing frame (201) and the hoist (1), a stabilizing component (3) is arranged on the fixing tube (207), a motor (208) is fixedly connected to the upper side wall of the hoist (1), the output end of the motor (208) is fixedly connected to the hanging plate (204) through a rotating shaft (209), both ends of the two hanging plates (204) are fixedly connected with iron chains (4), and an adsorption component (5) and a clamping component (6) are arranged between two adjacent iron chains (4).

2. A steam turbine rotor lifting device according to claim 1, characterized in that: The adsorption assembly (5) comprises an adsorption sleeve (501) fixedly connected to the iron chain (4), a plurality of evenly distributed insertion tubes (502) are inserted into the adsorption sleeve (501), and the upper ends of the plurality of insertion tubes (502) are all connected to suction cups (503).

3. A steam turbine rotor lifting device according to claim 2, characterized in that: An air pipe (504) is fixedly connected to the side wall of the adsorption sleeve (501), and a sealing cap (505) is threadedly connected to the air pipe (504).

4. A steam turbine rotor lifting device according to claim 1, characterized in that: The clamping assembly (6) comprises a clamping box (601) sleeved on two iron chains (4), and two pulleys (602) in contact with the iron chains (4) are fixedly connected to the inner walls on both sides of the clamping box (601).

5. A steam turbine rotor lifting device according to claim 4, characterized in that: A partition block (603) is fixedly connected inside the clamping box (601), and a limiting plate (604) is slidably connected inside the partition block (603).

6. A steam turbine rotor lifting device according to claim 5, characterized in that: The upper end of the limiting plate (604) is fixedly connected to a connecting column (605), and the upper end of the connecting column (605) passes through the partition block (603) and is fixedly connected to a trapezoidal block (606).

7. A steam turbine rotor lifting device according to claim 6, characterized in that: The trapezoidal block (606) is arranged in a trapezoidal structure, and one end of the trapezoidal block (606) with a small area is arranged downward.

8. The steam turbine rotor lifting device according to claim 1, characterized in that: The stabilizing assembly (3) comprises a rotating sleeve (301) rotatably connected to the fixing pipe (207), and a stabilizing rod (302) is fixedly connected between the rotating sleeve (301) and the hanging plate (204).

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