Shaft diameter protection mounting tool applied to steam turbine rotor

Abstract

The utility model relates to the technical field of steam turbine protection, and discloses a steam turbine rotor shaft diameter protection installation tool which comprises a base and further comprises a connecting piece arranged above the base. The protection assembly is arranged at the top of the base and used for protecting the shaft diameter of the rotor, the protection assembly comprises a protection shell, the outer side of the protection shell is fixedly connected with the inner wall of the base, a shell is arranged at the top of the protection shell, heat dissipation holes are formed in the inner wall of the shell, and an operation cavity is formed in the inner wall of the protection shell; according to the utility model, the protection shell and the rotor shaft diameter can be conveniently supported by arranging the base, the protection shell and the shell can be conveniently connected by arranging the connecting piece, so that the shell can be conveniently disassembled, and the rotor shaft diameter can be conveniently protected by arranging the protection assembly; and the risk that the rotor is damaged if foreign matters enter or are crushed by metal objects during working is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbine protection, in particular to a tool for installing protection of a shaft diameter of a steam turbine rotor. Background Art

[0002] The turbine shaft is a stationary part connected to the turbine; it is usually a large, heavy, rod-shaped metal component with the ability to withstand torque and axial loads; the turbine shaft is usually made of cast steel or forged steel, and can be a whole or assembled from multiple parts; the turbine shaft is a bridge between the stationary and rotating parts of the turbine, and can effectively transmit power to other parts of the machine; the rotor is the rotating part of the turbine and is one of the core components of the turbine; it is responsible for converting the high-temperature and high-pressure gas energy in the turbine into mechanical energy and outputting it through the output shaft of the machine; the rotor is usually made of cast steel or forged steel, and can be a single component or assembled from multiple parts.

[0003] During the installation of a steam turbine generator, it is extremely important to protect the rotor shaft diameter. Before turning the rotor, the protective equipment installed above the shaft diameter to protect the shaft diameter must be removed before the rotor can be turned. During long-term turning work such as turbine shaft centering or cylinder collision testing, if foreign objects enter or the rotor is hit by metal objects, there will be risks of rotor damage. Existing tools for protecting the shaft diameter of steam turbine rotors usually seal the rotor shaft diameter for protection. When the rotor shaft diameter rotates at high speed, a large amount of heat energy will be generated that cannot be discharged. After long-term work, the service life of the rotor shaft diameter will be reduced. Utility Model Content

[0004] The utility model aims to provide a tool for installing a protection device for the shaft diameter of a steam turbine rotor, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tool for protecting and installing the shaft diameter of a steam turbine rotor, comprising a base, and also comprising: a connecting piece arranged above the base; a protective component arranged on the top of the base for protecting the shaft diameter of the rotor, the protective component comprising a protective shell, the outer side of the protective shell is fixedly connected to the inner wall of the base, an outer shell is arranged on the top of the protective shell, the inner wall of the outer shell is provided with heat dissipation holes, and the inner wall of the protective shell is provided with an operating cavity.

[0006] Preferably, the connecting member includes a first connecting plate fixedly connected to the outside of the protective shell, and a fixing rod fixedly connected to the top of the first connecting plate.

[0007] Preferably, the connecting member further comprises a second connecting plate fixedly connected to the outer side of the shell, and a limiting plate is arranged on the top of the second connecting plate.

[0008] Preferably, the top of the base is fixedly connected to a limiting frame, the inner wall of the protective shell is rotatably connected to a main bearing, and one end of the main bearing is provided with a dangerous circuit breaker hole.

[0009] Preferably, a main thrust plate and an auxiliary thrust plate are fixedly connected to the outer side of the danger breaker hole, and a front bearing journal is fixedly connected to one end of the danger breaker hole.

[0010] Preferably, one end of the front bearing journal is fixedly connected to an auxiliary balancing shaft section, and one end of the auxiliary balancing shaft section is fixedly connected to a balancing piston shaft section.

[0011] Preferably, an adjustment stage is fixedly connected to the outer side of the main bearing, and a pressure stage is fixedly connected to one end of the main bearing.

[0012] Preferably, one end of the pressure stage is fixedly connected to a rear steam seal, and one end of the rear steam seal is fixedly connected to a rear radial bearing.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model can facilitate the support of the protective shell and the rotor shaft diameter by arranging a base, can facilitate the connection of the protective shell and the outer shell by arranging a connecting piece, thereby facilitating the disassembly of the outer shell, and can facilitate the protection of the rotor shaft diameter by arranging a protective component to prevent the risk of damage to the rotor caused by the entry of foreign objects or being hit by metal objects during work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic structural diagram of a preferred embodiment of a tool for protecting and installing the shaft diameter of a steam turbine rotor provided by the utility model;

[0016] Figure 2 A schematic diagram of the structure of the connecting piece provided by the utility model;

[0017] Figure 3 A schematic diagram of the structure of the protection component provided by the utility model;

[0018] Figure 4 This is a schematic diagram of the main bearing structure provided by the utility model.

[0019] In the figure: 1. base; 2. connecting part; 21. first connecting plate; 22. fixing rod; 23. second connecting plate; 24. limit plate; 3. protection component; 31. protective shell; 32. outer shell; 33. heat dissipation hole; 34. operating chamber; 4. limit frame; 5. main bearing; 6. danger circuit breaker hole; 7. main thrust plate; 8. auxiliary thrust plate; 9. front bearing journal; 10. auxiliary balance shaft section; 11. balance piston shaft section; 12. adjustment stage; 13. pressure stage; 14. rear steam seal; 15. rear radial bearing. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 As shown, a tool for protecting and installing the shaft diameter of a steam turbine rotor comprises a base 1, and also comprises: a connecting member 2 arranged above the base 1; a protection component 3 arranged on the top of the base 1 for protecting the shaft diameter of the rotor, the protection component 3 comprises a protection shell 31, the outer side of the protection shell 31 is fixedly connected to the inner wall of the base 1, an outer shell 32 is arranged on the top of the protection shell 31, a heat dissipation hole 33 is opened on the inner wall of the outer shell 32, and an operating cavity 34 is opened on the inner wall of the protection shell 31.

[0022] It should be noted that: by providing the connecting piece 2, the protective shell 31 and the outer shell 32 can be conveniently connected, so that the outer shell 32 can be conveniently disassembled; by providing the protective shell 31 and the outer shell 32, the rotor shaft diameter can be conveniently protected; by providing the heat dissipation holes 33, the inside of the protective shell 31 and the outer shell 32 can be conveniently dissipated; by providing the operating chamber 34, the rotor shaft diameter can be conveniently operated, and the operating chamber 34 is opened according to the size of the rotor shaft diameter, thereby improving the fit between the operating chamber 34 and the rotor shaft diameter and improving the practicality of the main body.

[0023] refer to Figure 2 and Figure 3As shown, the connecting member 2 includes a first connecting plate 21 fixedly connected to the outside of the protective shell 31, and a fixing rod 22 fixedly connected to the top of the first connecting plate 21; the connecting member 2 also includes a second connecting plate 23 fixedly connected to the outside of the outer shell 32, and a limiting plate 24 is arranged on the top of the second connecting plate 23. By setting the first connecting plate 21, it is convenient to support the fixing rod 22, and by setting the fixing rod 22, it is convenient to fix the first connecting plate 21 and the second connecting plate 23. By setting the first connecting plate 21 and the second connecting plate 23, it is convenient to connect the protective shell 31 and the outer shell 32, and by setting the limiting plate 24, the first connecting plate 21 and the second connecting plate 23 can be fixed more firmly.

[0024] refer to Figure 2 and Figure 4 As shown, the top of the base 1 is fixedly connected to the limiting frame 4, the inner wall of the protective shell 31 is rotatably connected to the main bearing 5, and one end of the main bearing 5 is provided with a dangerous circuit breaker hole 6; the outer side of the dangerous circuit breaker hole 6 is fixedly connected to the main thrust plate 7 and the auxiliary thrust plate 8, and one end of the dangerous circuit breaker hole 6 is fixedly connected to the front bearing journal 9; one end of the front bearing journal 9 is fixedly connected to the auxiliary balancing shaft section 10, and one end of the auxiliary balancing shaft section 10 is fixedly connected to the balancing piston shaft section 11; the outer side of the main bearing 5 is fixedly connected to the regulating stage 12, and one end of the main bearing 5 is fixedly connected to the pressure stage 13; one end of the pressure stage 13 is fixedly connected to the rear steam seal 14, and one end of the rear steam seal 14 is fixedly connected to the rear radial The bearing 15 and the limit frame 4 can facilitate the limiting of the protective shell 31. By setting the main bearing 5, it is convenient to drive the main body to rotate. By setting the dangerous circuit breaker hole 6, it is convenient to install the dangerous circuit breaker. By setting the main thrust plate 7 and the auxiliary thrust plate 8, it is convenient to limit the main body. By setting the front bearing journal 9, it is convenient to connect the main body. By setting the auxiliary balancing shaft section 10 and the balancing piston shaft section 11, it is convenient to assist in balancing the main body. By setting the adjustment stage 12, it is convenient to adjust the main body. By setting the pressure stage 13, it is convenient to reduce the pressure of the main body. By setting the rear steam seal 14 and the rear radial bearing 15, it is convenient to fix the main body.

[0025] Working principle: When in use, first, place the rotor shaft diameter in the operating chamber 34 inside the protective shell 31, and then place the outer shell 32 on the protective shell 31 to form a seal on the rotor shaft diameter, and fix the protective shell 31 and the outer shell 32 by rotating the nut on the outside of the fixing rod 22, and connect the first connecting plate 21 and the second connecting plate 23 more firmly through the limiting plate 24, so that the connection between the protective shell 31 and the outer shell 32 is more firmly, and the protective shell 31 is limited by the limiting frame 4, which improves the stability of the main body, and the auxiliary balancing shaft section 10 and the balancing piston shaft section 11 are provided to assist in balancing the main body to make it more balanced, and the dangerous circuit breaker hole 6 is provided to facilitate the installation of the dangerous circuit breaker, thereby improving the safety of the main body.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tool for installing a protection device for a shaft diameter of a steam turbine rotor, comprising a base (1), characterized in that: Also includes: A connecting member (2) disposed above the base (1); A protective component (3) is arranged on the top of the base (1) for protecting the rotor shaft diameter, the protective component (3) comprising a protective shell (31), the outer side of the protective shell (31) is fixedly connected to the inner wall of the base (1), the top of the protective shell (31) is provided with an outer shell (32), the inner wall of the outer shell (32) is provided with a heat dissipation hole (33), and the inner wall of the protective shell (31) is provided with an operating cavity (34).

2. The tool for protecting and installing the shaft diameter of a steam turbine rotor according to claim 1, characterized in that: The connecting member (2) comprises a first connecting plate (21) fixedly connected to the outside of the protective shell (31), and a fixing rod (22) fixedly connected to the top of the first connecting plate (21).

3. The tool for protecting and installing the shaft diameter of a steam turbine rotor according to claim 1, characterized in that: The connecting member (2) further comprises a second connecting plate (23) fixedly connected to the outside of the housing (32), and a limiting plate (24) is arranged on the top of the second connecting plate (23).

4. The tool for protecting and installing the shaft diameter of a steam turbine rotor according to claim 1, characterized in that: The top of the base (1) is fixedly connected to a limiting frame (4), the inner wall of the protective shell (31) is rotatably connected to a main bearing (5), and one end of the main bearing (5) is provided with a dangerous circuit breaker hole (6).

5. The tool for protecting and installing the shaft diameter of a steam turbine rotor according to claim 4, characterized in that: A main thrust plate (7) and an auxiliary thrust plate (8) are fixedly connected to the outer side of the dangerous breaker hole (6), and a front bearing journal (9) is fixedly connected to one end of the dangerous breaker hole (6).

6. The tool for protecting and installing the shaft diameter of a steam turbine rotor according to claim 5, characterized in that: One end of the front bearing journal (9) is fixedly connected to an auxiliary balancing shaft section (10), and one end of the auxiliary balancing shaft section (10) is fixedly connected to a balancing piston shaft section (11).

7. The tool for protecting and installing the shaft diameter of a steam turbine rotor according to claim 4, characterized in that: An adjustment stage (12) is fixedly connected to the outer side of the main bearing (5), and a pressure stage (13) is fixedly connected to one end of the main bearing (5).

8. The tool for protecting and installing the shaft diameter of a steam turbine rotor according to claim 7, characterized in that: One end of the pressure stage (13) is fixedly connected to a rear steam seal (14), and one end of the rear steam seal (14) is fixedly connected to a rear radial bearing (15).

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