A steam turbine blade quick changeover fixture

Abstract

The utility model discloses a kind of steam turbine blade quick replacement clamps, including installation component, steam turbine blade group, outer shell, blade dismounting auxiliary clamp, installation component positions and installs steam turbine blade group, outer shell is installed on the outer diameter of steam turbine blade group, steam turbine blade group blade is butt jointed with blade dismounting auxiliary clamp, a kind of steam turbine blade quick replacement clamp, blade dismounting auxiliary clamp is operated and is butt jointed with blade, fixed blade clamping frame special-shaped inner groove is clamped with blade inboard, sliding blade clamping frame is reset by elastic clamping component support spring elastic support clamping, after rotating locking screw, entire blade is clamped, after clamping is completed, palm is inserted into holding bracket palm synchronous stable holding holding sleeve, right hand holds blade outside at this time, slowly shakes blade and realizes that blade is stably moved from installation component installation station.

Description

Technical Field

[0001] This utility model relates to a quick-change fixture for steam turbine blades, belonging to the field of steam turbine blade replacement technology. Background Technology

[0002] The term "steel blade" refers to the steel used for both the moving and stationary blades in a steam turbine. Blades are critical components of a steam turbine, and among the most delicate and important. They withstand extremely harsh conditions, including high temperature, high pressure, immense centrifugal force, steam force, steam excitation force, corrosion and vibration, and the combined effects of water droplet erosion in wet steam zones. Their aerodynamic performance, machining geometry, surface roughness, installation clearance, operating conditions, and scaling all affect the turbine's efficiency and output; their structural design, vibration intensity, and operating mode have a decisive impact on the unit's safety and reliability. During turbine blade replacement and maintenance, manual disassembly of the blades is required. Traditional disassembly operations often involve hand-held, single-blade disassembly, which is labor-intensive and poses certain safety hazards. Utility Model Content

[0003] The purpose of this invention is to provide a quick-change fixture for steam turbine blades to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a quick-change fixture for turbine blades, comprising an installation component, a turbine blade assembly, an outer casing, and a blade disassembly auxiliary fixture. The installation component positions and installs the turbine blade assembly, the outer casing is installed on the outer diameter of the turbine blade assembly, and the blades of the turbine blade assembly are connected and installed with the blade disassembly auxiliary fixture.

[0005] Preferably, the blade disassembly auxiliary clamp consists of a fixed blade clamping frame, a crossbar, a handle assembly, a sliding blade clamping frame, an elastic clamping assembly, and an auxiliary grip. The fixed blade clamping frame is positioned and installed with the sliding blade clamping frame via the crossbar, and the sliding blade clamping frame is elastically supported and installed with the elastic clamping assembly. An auxiliary grip is threaded onto one end of the crossbar.

[0006] Preferably, the elastic clamping assembly consists of a reset support spring, a positioning bracket, a guide rod, and a locking screw. The reset support spring is fitted inside the inner diameter of the positioning bracket, the guide rod is fitted outside the outer diameter of the positioning bracket, and the locking screw is threaded onto the outer arc apex of the positioning bracket.

[0007] Preferably, the grip assembly consists of a sliding sleeve, a limiting grip bracket, and a grip sleeve. The limiting grip bracket is positioned and installed on the outer side of the sliding sleeve via a rotating shaft, and the grip sleeve is installed at the rear end of the sliding sleeve at the same center.

[0008] Compared with the prior art, the beneficial effects of this utility model are: The blade disassembly auxiliary fixture consists of a fixed blade clamping frame, a crossbar, a handle assembly, a sliding blade clamping frame, an elastic clamping assembly, and an auxiliary grip. The elastic clamping assembly consists of a reset support spring, a positioning bracket, a guide rod, and a locking screw. The handle assembly consists of a sliding sleeve, a limiting grip bracket, and a grip sleeve. The fixed blade clamping frame's irregular inner groove clamps the blade's inner side. After the sliding blade clamping frame is elastically supported and clamped by the elastic clamping assembly's reset support spring, rotating the locking screw clamps the entire blade. After clamping, the palm is inserted into the limit grip bracket of the handle assembly, and the palm simultaneously and stably grips the grip sleeve. At this time, the right hand grips the outer side of the blade, and the blade is slowly shaken to achieve stable removal of the blade from the installation position of the installation assembly. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of the turbine blade quick-change fixture of this utility model; Figure 2 This is a schematic diagram of the structure of the blade disassembly auxiliary clamp of this utility model; Figure 3 This is a schematic diagram of the structure of the elastic clamping assembly of this utility model; Figure 4 This is a schematic diagram of the grip assembly of this utility model.

[0010] In the diagram: 1. Installation component, 2. Turbine blade assembly, 3. Outer casing, 4. Blade disassembly auxiliary clamp, 5. Fixed blade clamping frame, 6. Crossbar, 7. Handle assembly, 8. Sliding blade clamping frame, 9. Elastic clamping assembly, 10. Auxiliary grip, 11. Reset support spring, 12. Positioning bracket, 13. Guide rod, 14. Locking screw, 15. Sliding sleeve, 16. Limiting grip bracket, 17. Grip sleeve. Detailed Implementation

[0011] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0012] like Figures 1-4 As shown, a quick-change fixture for steam turbine blades includes an installation component 1, a steam turbine blade assembly 2, an outer casing 3, and a blade disassembly auxiliary fixture 4. The installation component 1 positions and installs the steam turbine blade assembly 2. The outer casing 3 is installed on the outer diameter of the steam turbine blade assembly 2. The blades of the steam turbine blade assembly 2 are connected and installed with the blade disassembly auxiliary fixture 4.

[0013] The blade disassembly auxiliary clamp 4 consists of a fixed blade clamping frame 5, a crossbar 6, a handle assembly 7, a sliding blade clamping frame 8, an elastic clamping assembly 9, and an auxiliary grip rod 10. The fixed blade clamping frame 5 is positioned and installed with the sliding blade clamping frame 8 via the crossbar 6. The sliding blade clamping frame 8 is elastically supported and installed with the elastic clamping assembly 9. An auxiliary grip rod 10 is threaded onto one end of the crossbar 6. The irregular inner groove of the fixed blade clamping frame 5 is clamped to the inner side of the blade. The elastic clamping assembly 9 consists of a reset support spring 11, a positioning bracket 12, a guide rod 13, and a locking screw 14. The reset support spring 11 is fitted inside the inner diameter of the positioning bracket 12, the guide rod 13 is fitted outside the outer diameter of the positioning bracket 12, and the locking screw 14 is threaded onto the outer arc apex of the positioning bracket 12. After the sliding blade clamping frame 8 is elastically supported and clamped by the reset support spring 11 of the elastic clamping assembly 9, rotating the locking screw 14 clamps and fixes the entire blade.

[0014] The grip assembly 7 consists of a sliding sleeve 15, a limiting grip bracket 16, and a grip sleeve 17. The limiting grip bracket 16 is positioned and installed on the outer side of the sliding sleeve 15 via a rotating shaft. The grip sleeve 17 is installed at the rear end of the sliding sleeve 15 with the center as the center. After the grip is tightened, the palm is inserted into the limiting grip bracket 16 of the grip assembly 7 and the palm simultaneously and stably grips the grip sleeve 17. At this time, the right hand grips the outer side of the blade to perform the blade disassembly and assembly process.

[0015] Specific usage: A quick-change fixture for turbine blades. The auxiliary fixture for blade disassembly is connected to the blade. The fixed blade clamping frame with its irregular inner groove clamps the blade. The sliding blade clamping frame is clamped by the elastic clamping component's reset support spring. After clamping, the locking screw is rotated to clamp the entire blade. After clamping, the palm is inserted into the grip component's limit grip bracket, and the palm synchronously and stably grips the grip sleeve. At this time, the right hand holds the outside of the blade, and the blade is slowly shaken to achieve stable removal of the blade from the installation position of the installation component.

[0016] The above description is a preferred embodiment of the present utility model. For those skilled in the art, any changes, modifications, substitutions and variations made to the implementation methods without departing from the principles and spirit of the present utility model, based on the teachings of the present utility model, still fall within the protection scope of the present utility model.

Claims

1. A quick-change fixture for steam turbine blades, characterized in that, The assembly includes an installation component (1), a turbine blade assembly (2), an outer casing (3), and a blade disassembly auxiliary fixture (4). The installation component (1) positions and installs the turbine blade assembly (2). The outer casing (3) is installed on the outer diameter of the turbine blade assembly (2). The blades of the turbine blade assembly (2) are connected and installed with the blade disassembly auxiliary fixture (4).

2. The turbine blade quick-change fixture according to claim 1, characterized in that: The blade disassembly auxiliary clamp (4) consists of a fixed blade clamping frame (5), a crossbar (6), a handle assembly (7), a sliding blade clamping frame (8), an elastic clamping assembly (9), and an auxiliary grip (10). The fixed blade clamping frame (5) is positioned and installed with the sliding blade clamping frame (8) via the crossbar (6). The sliding blade clamping frame (8) is elastically supported and installed with the elastic clamping assembly (9). An auxiliary grip (10) is threaded onto one end of the crossbar (6).

3. The turbine blade quick-change fixture according to claim 2, characterized in that: The elastic clamping assembly (9) consists of a reset support spring (11), a positioning bracket (12), a guide rod (13), and a locking screw (14). The reset support spring (11) is fitted inside the inner diameter of the positioning bracket (12), the guide rod (13) is fitted outside the outer diameter of the positioning bracket (12), and the locking screw (14) is threaded onto the outer arc top of the positioning bracket (12).

4. The turbine blade quick-change fixture according to claim 2, characterized in that: The grip assembly (7) consists of a sliding sleeve (15), a limiting grip bracket (16) and a grip sleeve (17). The limiting grip bracket (16) is installed on the outside of the sliding sleeve (15) by a pivot, and the grip sleeve (17) is installed at the rear end of the sliding sleeve (15) with the center of the circle.

Images