Heavy gas turbine blade positioning block dismounting device

Abstract

The utility model discloses a heavy gas turbine blade positioning block dismounting device which comprises a tenon supporting base. The tenon supporting base is provided with a movable supporting ring for disassembling a positioning block of the blade and a positioning pin for preventing the supporting ring from rotating; a dismounting bolt is mounted in the movable supporting ring; and the dismounting bolt is connected with a blade positioning block. According to the special dismounting device for the heavy gas turbine blade positioning block, a tenon supporting base of a gas turbine blade is simulated to automatically align the movement track of the positioning block to be perpendicular to an unloading stress surface; the dismounting bolt and the gas turbine blade are in positioning threaded connection, according to the relative motion principle, the bolt does not displace when rotating, the dismounted positioning block is installed in a rotor groove to limit rotation, and the positioning block is moved out and dismounted when the bolt rotates. No impact force is generated in the whole dismounting process, damage to parts is avoided, damage is reduced, and production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to a disassembly device for the positioning block of a heavy-duty gas turbine blade, belonging to the field of heavy-duty gas turbine technology. Background Technology

[0002] When installing the critical component of a gas turbine, the moving blade, the radial blade root is positioned within the rotor tenon slot, while axial positioning relies on locating blocks on the rotor slot. After a certain period of operation, the moving blade components, including the locating blocks, need to be disassembled and inspected; if worn, they need to be replaced. Disassembling in a confined space without damaging other components is extremely difficult for operators; therefore, disassembly is currently primarily done manually, relying on the extensive practical experience of the operators. This disassembly method demands high skill levels, has a high rate of rework of heavy-duty gas turbine blade locating block disassembly devices, a high risk of damage to parts, and is relatively inefficient, time-consuming, and costly. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model provides a heavy-duty gas turbine blade positioning block disassembly device, which solves the problem of disassembling the existing gas turbine blade positioning block. It allows for disassembly in a confined space without damaging other components, while also facilitating operators to improve disassembly accuracy and efficiency.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a heavy-duty gas turbine blade positioning block disassembly device, comprising a tenon support base; the tenon support base is provided with a movable support ring for disassembling the blade positioning block and an anti-rotation positioning pin for the support ring; a disassembly bolt is installed inside the movable support ring; the disassembly bolt is connected to the blade positioning block.

[0005] Furthermore, the movable support ring is installed in the base groove on the tenon support base.

[0006] Furthermore, the disassembly bolt extends into the connecting threaded hole of the blade positioning block to position the threaded connection.

[0007] Furthermore, a thrust bearing and a bearing retainer ring are installed inside the movable support ring.

[0008] Furthermore, the centerline of the disassembly bolt is aligned with the installation and disassembly direction of the blade positioning block, and the positioning block of the blade is moved out by converting it into linear motion through helical rotation.

[0009] The beneficial effects of this utility model are as follows: This special disassembly device for heavy-duty gas turbine blade positioning blocks automatically aligns the moving trajectory of the positioning block with the unloading force surface by simulating the tenon support base of the gas turbine blade; the disassembly bolt is threadedly connected to the positioning bolt of the gas turbine blade, and based on the principle of relative motion, the bolt rotation will not cause displacement; the positioning block to be disassembled is installed in the rotor slot to restrict rotation, and the positioning block is removed when the bolt rotates. The entire disassembly process is without impact force and will not damage the parts, reducing damage and improving production efficiency. Attached Figure Description

[0010] Figure 1 This is a schematic cross-sectional view of the special disassembly device for the positioning block of heavy-duty gas turbine blades according to this utility model;

[0011] Figure 2 This is a schematic side view of the special disassembly device for the positioning block of heavy-duty gas turbine blades according to this utility model;

[0012] Figure 3 This is a schematic diagram of the installation structure of the gas turbine blade positioning block disassembly device of this utility model.

[0013] In the diagram: 1. Tenon support base, 2. Movable support ring, 3. Disassembly bolt, 4. Anti-rotation positioning pin for support ring, 5. Thrust bearing, 6. Bearing retaining ring, 7. Blade positioning block. Detailed Implementation

[0014] 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.

[0015] 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.

[0016] like Figure 1 , Figure 2 and Figure 3 As shown, a heavy-duty gas turbine blade positioning block disassembly device includes a tenon support base 1; the tenon support base 1 is provided with a movable support ring 2 for disassembling the blade positioning block and an anti-rotation positioning pin 4; a disassembly bolt 3 is installed inside the movable support ring 2; the disassembly bolt 3 is connected to the blade positioning block 7.

[0017] In this preferred embodiment, the movable support ring 2 is installed in the base groove on the tenon support base 1.

[0018] In this preferred embodiment, the disassembly bolt 3 is inserted into the threaded hole of the blade positioning block 7 to position the threaded connection.

[0019] In this preferred embodiment, a thrust bearing 5 and a bearing retaining ring 6 are installed inside the movable support ring 2.

[0020] In this preferred embodiment, the centerline of the disassembly bolt 3 is aligned with the installation and disassembly direction of the blade positioning block 7, and the positioning block of the blade is moved out by converting it into linear motion through helical rotation.

[0021] In this structure, the tenon support base 1 ensures the supporting force when the blade positioning block 7 is disassembled, and at the same time, the base can ensure the direction of the unloading force. The blade positioning block 7 is installed on the tenon support base 1, restricting the rotation of the movable support ring 2. The disassembly bolt 3 is used to connect the threads of the blade positioning block 7. Based on the principle of relative motion, the bolt rotation will not produce displacement. The disassembled positioning block is installed in the rotor slot to restrict rotation, and the positioning block is moved out when the bolt rotates. The thrust bearing 5 is installed in the movable support ring 2 to reduce the end face friction generated by the bolt rotation.

[0022] This specialized disassembly device for heavy-duty gas turbine blade positioning blocks automatically aligns the positioning block's movement trajectory with the unloading force surface via a tenon-supported base. The disassembly bolt is threadedly connected to the gas turbine blade positioning block; based on the principle of relative motion, bolt rotation does not cause displacement. The positioning block, installed within the rotor slot, restricts rotation, and is removed during bolt rotation. The entire disassembly process is impact-free, preventing damage to parts and improving production efficiency.

[0023] 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. A heavy-duty gas turbine blade positioning block disassembly device, characterized in that, It includes a tenon support base (1); the tenon support base (1) is provided with a movable support ring (2) for disassembling the blade and a positioning pin (4) for preventing the support ring from rotating; a disassembly bolt (3) is installed inside the movable support ring (2); the disassembly bolt (3) is connected to the blade positioning block (7).

2. The heavy-duty gas turbine blade positioning block disassembly device according to claim 1, characterized in that, The movable support ring (2) is installed in the base groove on the tenon support base (1).

3. The heavy-duty gas turbine blade positioning block disassembly device according to claim 1, characterized in that, The disassembly bolt (3) extends into the threaded hole of the blade positioning block (7) for positioning thread connection.

4. The heavy-duty gas turbine blade positioning block disassembly device according to claim 1, characterized in that, The movable support ring (2) is equipped with a thrust bearing (5) and a bearing retainer ring (6).

5. The heavy-duty gas turbine blade positioning block disassembly device according to claim 1, characterized in that, The centerline of the disassembly bolt (3) is consistent with the installation and disassembly direction of the blade positioning block (7), and the positioning block of the blade is converted into linear motion and moved out by spiral rotation.

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