An integrated GE 9FA gas turbine 2-bearing shaft lifting and maintenance tool

Abstract

This utility model discloses an integrated tool for overhauling the 2-bearing rotor shaft of a GE 9FA gas turbine. The tool includes a main structural component, comprising an upper connecting part, an extended protrusion, and a lower receiving part. A lifting point is centrally located at the upper connecting part, positioned above the main structural component. Extended protrusions are located on both sides of the lifting point, with their lower ends forming jack fulcrums. A journal fulcrum is located at the lower receiving part. This tool has been proven to efficiently complete the removal and overhaul of the 2-bearing rotor without requiring complete rotor removal, significantly improving on-site work efficiency and safety. Furthermore, it drastically reduces maintenance time, bringing significant economic benefits to enterprises. Simultaneously, the introduction of this tool greatly simplifies the maintenance process, reduces the complexity of on-site operations, and effectively saves working time and safety costs.

Description

Technical Field

[0001] This utility model relates to an integrated GE 9FA gas turbine 2-watt lifting shaft maintenance tool, belonging to the technical field of heavy-duty gas turbine maintenance equipment. Background Technology

[0002] As a core piece of equipment in the energy and power sector, the stable operation of the GE 9FA gas turbine is crucial. Bearing maintenance is a key aspect of routine maintenance and repair of gas turbines. In particular, the maintenance of the 2-bearing bearing, traditionally, requires lifting the rotor out, which is not only time-consuming and labor-intensive but also poses significant safety risks. Currently, there is a lack of specialized tools that can safely and efficiently perform 2-bearing bearing maintenance without lifting the rotor. Therefore, developing a 2-bearing bearing lifting tool that can solve the above problems is of significant practical importance. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model provides an integrated GE 9FA gas turbine 2-watt shaft lifting and maintenance tool, thereby solving the aforementioned technical problems.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: an integrated GE 9FA gas turbine 2-watt lifting shaft maintenance tool, which includes a main structural component; the main structural component includes an upper connecting part, two side supporting parts and a lower receiving part; the upper connecting part has a central mounting point for connecting lifting equipment, and the mounting point is located above the main structural component; Extended protrusions are provided on both sides of the installation lifting point. The lower end of the extended protrusions forms the jack fulcrum, which is used to support the jack and achieve precise lifting of the rotor. The lower end receiving part is provided with a journal support point, which is used to connect with the rotor journal to provide stable support and ensure that the rotor remains balanced during the lifting process. It has an arc-shaped slot in the center, which adopts an arc design that matches the surface of the journal.

[0005] Furthermore, the main structural component is an integral piece.

[0006] Furthermore, the arc-shaped surface of the journal fulcrum may be provided with an anti-slip pad to prevent the rotor journal from sliding.

[0007] The beneficial effects of this utility model are: this structural component ingeniously combines the installation lifting point, jack support point and journal support point to form a complete shaft lifting and maintenance tool, realizing precise lifting and stable support of the rotor.

[0008] After rigorous on-site testing and application, this tool has proven to efficiently complete the removal and maintenance of the 2-watt rotor without requiring complete rotor removal, significantly improving on-site operational efficiency and safety. This innovative method significantly reduces safety risks during rotor hoisting, playing an immeasurable role in enhancing on-site operational safety. Furthermore, it drastically shortens maintenance time, bringing significant economic benefits to the company. Simultaneously, the introduction of this tool greatly simplifies the maintenance process, reduces the complexity of on-site operations, and effectively saves working time and safety costs. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model.

[0010] In the diagram: 1. Installation lifting point, 2. Jack support point, 3. Journal support point. Detailed Implementation

[0011] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope.

[0012] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0013] like Figure 1 As shown, an integrated GE 9FA gas turbine 2-watt lifting shaft maintenance tool is provided. The maintenance tool includes a main structural component. The main structural component includes an upper connecting part, two extended protrusions on both sides, and a lower receiving part. An installation lifting point 1 is provided at the center of the upper connecting part for connecting lifting equipment. The installation lifting point 1 is located above the main structural component. Extended protrusions are provided on both sides of the installation lifting point 1. The lower end of the extended protrusions forms the jack fulcrum 2, which is used to support the jack and achieve precise lifting of the rotor. The lower end receiving part is provided with a journal support point 3, which is used to connect with the rotor journal to provide stable support and ensure that the rotor remains balanced during the lifting process. It has an arc-shaped slot in the center and adopts an arc design that matches the surface of the journal.

[0014] In this preferred embodiment, the main structural component is an integral structure.

[0015] In this preferred embodiment, the arc-shaped surface of the journal support (3) may be provided with an anti-slip pad, which is used to prevent the rotor journal from sliding.

[0016] The GE 9FA gas turbine 2-watt lifting shaft tool of the present invention consists of three main components: (1) a mounting point for providing stable lifting anchoring; (2) a jack fulcrum for precise control of lifting height; and (3) a journal fulcrum for ensuring stable support of the rotor journal.

[0017] During operation, the bearing housing, bearing pad, and the upper half of bearing 2 are first lifted from their original positions using hoisting equipment. Then, the tool's mounting point 1 is fixed in the designated position, ensuring precise alignment between the journal support point 3 and the rotor journal. Next, the jack support point 2 is used to raise the rotor to the set height, allowing the lower half of bearing 2 to be safely rotated for comprehensive overhaul.

[0018] After rigorous on-site testing and application, this tool has proven to efficiently complete the removal and maintenance of the 2-watt rotor without requiring complete rotor removal, significantly improving on-site operational efficiency and safety. This innovative method significantly reduces safety risks during rotor hoisting, playing an immeasurable role in enhancing on-site operational safety. Furthermore, it drastically shortens maintenance time, bringing significant economic benefits to the company. Simultaneously, the introduction of this tool greatly simplifies the maintenance process, reduces the complexity of on-site operations, and effectively saves working time and safety costs.

[0019] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An integrated GE 9FA gas turbine 2-bearing shaft lifting and maintenance tool, characterized in that, The maintenance tool includes a main structural component; the main structural component includes an upper connecting part, two side extension protrusions and a lower receiving part; the upper connecting part is provided with a central mounting point (1) for connecting lifting equipment, and the mounting point (1) is located above the main structural component; Extended protrusions are provided on both sides of the installation lifting point (1). The lower end of the extended protrusions forms the jack fulcrum (2), which is used to support the jack and achieve precise lifting of the rotor. The lower end receiving part is provided with a journal support point (3), which is used to connect with the rotor journal to provide stable support and ensure that the rotor remains balanced during the lifting process. It has an arc-shaped slot in the center and adopts an arc design that matches the surface of the journal.

2. The integrated GE 9FA gas turbine 2-bearing shaft lifting and maintenance tool according to claim 1, characterized in that, The main structural component is a single, integrated structure.

3. The integrated GE 9FA gas turbine 2-bearing shaft lifting and maintenance tool according to claim 1, characterized in that, The arc-shaped surface of the journal support point (3) may be provided with an anti-slip pad, which is used to prevent the rotor journal from sliding.

Images