Special tool for disassembling and assembling bearing temperature element of Alstonton main steam turbine
Through the special tools for designing plum sleeves and sleeve bases, the complexity of the bearing temperature components of Alstom main turbine is solved, convenient disassembly and securely installed, and the safety and measurement accuracy of the unit are improved.
Patent Information
- Application Number
- CN202420220166.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-30
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-01-30
Smart Images
Figure CN222345438U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of disassembly and assembly of bearing temperature elements, in particular to a special tool for disassembly and assembly of bearing temperature of an Alstom main steam turbine. Background Art
[0002] Alstom's main steam turbine has 2 bearing temperature elements installed on bearings #1-7, and 2 temperature elements installed on the working and non-working surfaces of thrust bearings. A total of 18 bearing elements (K-type thermocouples) are installed, of which the thrust bearing temperature is installed on the side, and the bearing temperature of bearings #1-7 is installed on the bottom. The disassembly space is small and there are concave holes, which is inconvenient for disassembly. If the element is not disassembled by turning over the bearing, the actual situation cannot be observed due to the small space, resulting in the inability to disassemble and assemble. The lower bearing needs to be turned over to the top for disassembly and assembly. During the grade inspection, when the maintenance needs to check the bearing or the thermal engineering needs to check the temperature element, the element needs to be disassembled and assembled. When disassembling and assembling, the lower bearing needs to be turned over to the top for disassembly and assembly. The lifting and main body and thermal engineering professionals work together, which is demanding, time-consuming and labor-intensive, and wastes human resources. In addition, if you are not careful during this period, the element will be damaged. It is time-consuming and labor-intensive to disassemble without special tools. The firmness of the installation cannot be guaranteed, and it cannot be guaranteed that the element will not loosen during the operation of the unit. Once loose, the accuracy of the measurement data cannot be guaranteed.
[0003] Therefore, it is urgent to design a special tool for disassembling and assembling bearing temperature elements according to actual conditions. Utility Model Content
[0004] The purpose of the utility model is to overcome the defects of the prior art and provide a special tool for disassembling and assembling the bearing temperature element of the Alstom main steam turbine.
[0005] The purpose of the utility model can be achieved through the following technical solutions:
[0006] A special tool for disassembling and assembling the temperature element of the bearing of the main steam turbine of Alstom, the special tool comprises a cylindrical plum blossom sleeve and a sleeve base which are integrally injection-molded and open at the top and bottom; the diameter of the plum blossom sleeve is smaller than the diameter of the sleeve base; a plurality of fixed angles arranged in a plum blossom shape are arranged at the bottom of the plum blossom sleeve; a limiting hole is arranged at the connection position between the inside of the plum blossom sleeve and the sleeve base; an outer wall opening which passes through from top to bottom is opened on the outer walls of the plum blossom sleeve and the sleeve base; a through hole is arranged on the sleeve base; an L-shaped sliding pin is arranged on the sleeve base through the through hole; a handle is arranged at one end of the sliding pin, and an M4 nut is arranged at the other end.
[0007] Furthermore, the plum blossom sleeve is a plum blossom sleeve with a length of 13 mm; and the sleeve base is a sleeve base with a length of 25 mm.
[0008] Furthermore, the fixed angles are evenly arranged at the bottom of the plum blossom sleeve, and each fixed angle is a fixed angle of 30 degrees.
[0009] Furthermore, the limiting hole is a limiting hole with an inner diameter of 10 mm.
[0010] Furthermore, the outer wall opening is an opening with a width of 3.5 mm.
[0011] Furthermore, the through hole is a through hole with a diameter of 4.5 mm; and the sliding pin is a sliding pin with a diameter of 4 mm.
[0012] Compared with the prior art, the utility model has the following advantages:
[0013] (1) The utility model can disassemble, inspect and replace the bearing temperature element without turning the bearing, which is convenient and quick to use. It can also ensure that the installation is firm and reliable during installation, improve the safety and reliability of the unit, reduce the workload of turning the bearing by the matching professionals and the steam turbine body professionals, save time, labor and cost.
[0014] (2) The utility model has a simple structure and is easy to manufacture. It can be processed and manufactured in different sizes according to different needs, and is convenient for disassembly and assembly of components of different sizes, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a structural schematic diagram provided by the utility model.
[0016] The numbers in the figure show:
[0017] 1. Plum blossom socket; 2. Socket base; 3. Fixed angle; 4. Limit hole; 5. Outer wall opening; 6. Through hole; 7. Sliding pin; 8. Handle; 9. M4 nut. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0020] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0021] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.
[0022] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0023] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0024] Example
[0025] like Figure 1As shown, a special tool for disassembling and assembling the temperature element of the bearing of the Alstom main steam turbine, the special tool comprises a plum blossom sleeve 1 with a length of 13 mm and a sleeve base 2 with a length of 25 mm, the plum blossom sleeve 1 and the sleeve base 2 are integrally injection-molded and open at the top and bottom, and are of a cylindrical structure, and the diameter of the plum blossom sleeve 1 is smaller than the diameter of the sleeve base 2; the bottom of the plum blossom sleeve 1 is provided with a plurality of fixed angles 3 arranged in a plum blossom shape, the fixed angles 3 are evenly arranged at the bottom of the plum blossom sleeve 1, and each fixed angle 3 is 30 degrees, which is convenient for adjusting the plum blossom sleeve 1 at a small angle in an installation hole that cannot be observed to insert the plum blossom sleeve 1 into the fixing nut of the temperature element; the inner portion of the plum blossom sleeve 1 is provided with a limit hole 4 with an inner diameter of 10 mm at the connection position with the sleeve base 2 , used to limit the fixing nut of the temperature element; since one end of the temperature element has been installed with wiring during disassembly and assembly, an outer wall opening 5 with a width of 3.5mm is opened on the outer wall of the plum blossom sleeve 1 and the sleeve base 2, which is used to insert the special tool into the wiring from the outer wall opening 5; a through hole 6 with a diameter of 4.5mm is provided on the sleeve base 2; an L-shaped sliding pin 7 with a diameter of 4mm is provided through the through hole 6 of the sleeve base 2. When the space is small, the sliding pin 7 can be rotated to continue rotating, and the force of the user can be amplified to ensure reliable installation and rapid removal; a handle 8 is provided at one end of the sliding pin 7, and an M4 nut 9 is provided at the other end to prevent the sliding pin from falling during use.
[0026] The working principle of the utility model is:
[0027] The fixing nut of the temperature element actually installed on site is a 13mm hexagonal screw with a screw length of 15mm. First, put the special tool on the wiring from the outer wall opening 5, slide along the wiring to the fixing nut in the installation hole that cannot be observed, adjust the plum blossom sleeve 1, so that the fixing nut enters from the top of the plum blossom sleeve 1, fixed by the fixing angle 3, and limited by the limit hole 4. If the temperature element is to be assembled, first hold the sleeve base 2 and rotate it clockwise. When it is rotated to the point where the hand cannot be inserted, hold the handle 8 of the sliding pin 7 and continue to rotate until it is tightened; if the temperature element is to be disassembled, first hold the handle 8 of the sliding pin 7 and rotate it counterclockwise until the sleeve base 2 can be held by hand, and then rotate the sleeve base 2 counterclockwise until the fixing nut is screwed out.
[0028] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.
Claims
1. A special tool for disassembling and assembling the temperature element of the bearing of the Alstom main steam turbine, characterized in that: The special tool comprises a cylindrical plum blossom sleeve (1) and a sleeve base (2) which are integrally injection molded and open at the top and bottom; the diameter of the plum blossom sleeve (1) is smaller than the diameter of the sleeve base (2); a plurality of fixed angles (3) arranged in a plum blossom shape are arranged at the bottom of the plum blossom sleeve (1); a limiting hole (4) is arranged at the connection position between the inside of the plum blossom sleeve (1) and the sleeve base (2); an outer wall opening (5) which passes through from top to bottom is opened on the outer walls of the plum blossom sleeve (1) and the sleeve base (2); a through hole (6) is arranged on the sleeve base (2); an L-shaped sliding pin (7) is arranged on the sleeve base (2) through the through hole (6); a handle (8) is arranged at one end of the sliding pin (7), and an M4 nut (9) is arranged at the other end.
2. A special tool for disassembling and assembling the temperature element of the Alstom main steam turbine bearing according to claim 1, characterized in that: The plum blossom sleeve (1) is a plum blossom sleeve with a length of 13 mm; the sleeve base (2) is a sleeve base with a length of 25 mm.
3. A special tool for disassembling and assembling the temperature element of the Alstom main steam turbine bearing according to claim 1, characterized in that: The fixed angles (3) are evenly arranged at the bottom of the plum blossom sleeve (1), and each fixed angle (3) is a fixed angle of 30 degrees.
4. A special tool for disassembling and assembling the bearing temperature element of the Alstom main steam turbine according to claim 1, characterized in that: The limiting hole (4) is a limiting hole with an inner diameter of 10 mm.
5. A special tool for disassembling and assembling the temperature element of the Alstom main steam turbine bearing according to claim 1, characterized in that: The outer wall opening (5) is an opening with a width of 3.5 mm.
6. A special tool for disassembling and assembling the temperature element of the Alstom main steam turbine bearing according to claim 1, characterized in that: The through hole (6) is a through hole with a diameter of 4.5 mm; the sliding pin (7) is a sliding pin with a diameter of 4 mm.