A special device for dismounting and mounting the gas turbine exhaust thermocouple fastener
Patent Information
- Application Number
- CN202522531827.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-28
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-11-28
AI Technical Summary
燃气轮机排气扩散段温度很高，一般在500℃以上，用于固定热电偶的螺母会发生咬死现象，常用的开口扳手在安装拆卸过程中受力面不够，易导致螺母打滑
[0008]1.本实用新型整体结构简单合理，在拆卸检查燃气轮机排气热电偶过程中， 无需解开固定支架，有效减少了检修时间，拆装过程中，热电偶固定螺母的四个受理面与扳手紧密接触，避免了紧固件打滑。
Smart Images
Figure CN224839163U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a special device for disassembling and assembling fasteners for gas turbine exhaust thermocouples. Background Technology
[0002] Gas turbine exhaust frames typically house several to dozens of armored exhaust thermocouples to monitor combustion dispersion and ensure stable combustion. The exhaust diffuser section of a gas turbine experiences very high temperatures, generally exceeding 500°C. Nuts securing the thermocouples can seize up, and commonly used open-end wrenches often lack sufficient contact area during installation and removal, leading to slippage. To prevent damage to the thermocouple terminals from high temperatures, thermocouples are often designed and manufactured to be relatively long, and secured to the exhaust frame with a bracket. Removal with a box wrench requires disassembling the bracket, which does not alter the removal process. Utility Model Content
[0003] This utility model provides a special device for disassembling and assembling fasteners for gas turbine exhaust thermocouples to overcome the defects of existing technology.
[0004] The above objectives are achieved through the following scheme: A special device for disassembling and assembling fasteners for gas turbine exhaust thermocouples comprises: a Y-shaped handle, with two clamping blocks slidably connected to both ends of the Y-shaped handle; an adjusting rod rotatably connected to the Y-shaped handle; the left screw of the adjusting rod being threadedly connected to the clamping block on the left side; and the right screw of the adjusting rod being threadedly connected to the clamping block on the right side.
[0005] The aforementioned special device for disassembling and assembling gas turbine exhaust thermocouple fasteners includes an adjusting rod comprising a hand lever, one end of which is fixed with a left screw and the other end with a right screw.
[0006] The aforementioned special device for disassembling and assembling gas turbine exhaust thermocouple fasteners includes a K-shaped clamping block with a slider on its back, and the included angle between the two inclined sides of the K-shape of the clamping block is 120°.
[0007] The aforementioned special device for disassembling and assembling gas turbine exhaust thermocouple fasteners has the left screw and the right screw having opposite thread directions. Beneficial effects
[0008] 1. The overall structure of this utility model is simple and reasonable. During the disassembly and inspection of the gas turbine exhaust thermocouple, there is no need to remove the fixing bracket, which effectively reduces the maintenance time. During the disassembly and assembly process, the four receiving surfaces of the thermocouple fixing nut are in close contact with the wrench, which avoids the fastener slipping.
[0009] 2. This utility model can adjust the distance between the two clamping blocks according to the thermocouple fixing nut of the model, thereby improving its applicability. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Enlarged view of part A; Figure 3 This is the front view of the present invention; Figure 4 for Figure 3 BB section sectional view; Figure 5 This is a schematic diagram of the adjusting rod. In the diagram: 1. Clamping block; 2. Slider; 3. Adjusting rod; 4. Y-shaped hand grip; 5. Notch; 6. Left screw; 7. Hand lever; 8. Right screw; 9. Angle opening; 10. Left working rod; 11. Right working rod. Detailed Implementation
[0011] Reference Figures 1-5 A special device for disassembling and assembling fasteners of gas turbine exhaust thermocouples includes: a Y-shaped handle 4 with two square holes and two round holes; two clamping blocks 1 slidably connected to both ends of the Y-shaped handle; the sliders of the clamping blocks are inserted into the corresponding square holes and slidably engaged; an adjusting rod 3 is rotatably connected to the Y-shaped handle; the left screw 6 of the adjusting rod is threadedly connected to the clamping block on the left side, and the right screw 8 of the adjusting rod is threadedly connected to the clamping block on the right side.
[0012] The adjusting rod includes a hand lever 7, one end of which is fixed with a left screw 6 and the other end with a right screw 8. The left and right screws and the hand lever are concentrically arranged. The ends of the left and right screws are both fixed with a first baffle 10, and a rotating rod 11 is fixed on the first baffle. During installation, the rotating rod at the end of the left screw is inserted into the round hole on the left side of the Y-shaped hand grip, and the rotating rod at the end of the right screw is inserted into the round hole on the right side of the Y-shaped hand grip. Both rotating rods have threaded ends. A tail baffle 12 is fitted on the rotating rod, and then a fastening nut 13 is threadedly connected. Then, the left screw is fixed to the hand lever, and the right screw is fixed to the hand lever, thus realizing the installation and fixing of the adjusting rod. The clamping block is a K-shaped block with a slider 2 on its back. The included angle between the two inclined sides of the K-shaped clamping block forming the corner 9 is 120°.
[0013] The left screw and the right screw have opposite thread directions.
[0014] Working principle: When in use, adjust the distance between the two clamping blocks so that the thermocouple can be directly inserted into the wrench through the gap between the two clamping blocks. Then turn the wrench head, the left screw is threaded to the left clamping block, and the right screw is threaded to the right clamping block. The threads of the left and right screws are opposite in direction, so that when the adjusting rod is turned, the two clamping blocks can move synchronously in opposite directions. After adjustment, the two clamping blocks clamp the thermocouple fixing nut. The two K-shaped inclined surfaces of the clamping blocks are in contact with the force-bearing surface of the fixing nut. Then, rotating the device can remove the thermocouple.
Claims
1. A special device for disassembling and assembling fasteners of gas turbine exhaust thermocouples, characterized in that: Its components include: a Y-shaped grip bar, with two clamping blocks slidably connected to both ends of the Y-shaped grip bar, and an adjusting rod rotatably connected to the Y-shaped grip bar. The left screw of the adjusting rod is threadedly connected to the clamping block on the left side, and the right screw of the adjusting rod is threadedly connected to the clamping block on the right side.
2. The special device for disassembling and assembling gas turbine exhaust thermocouple fasteners according to claim 1, characterized in that: The adjusting rod includes a hand lever, one end of which is fixed with a left screw and the other end with a right screw.
3. The special device for disassembling and assembling gas turbine exhaust thermocouple fasteners according to claim 2, characterized in that: The clamping block is a K-shaped block with a slider on its back, and the included angle between the two inclined sides of the K-shape of the clamping block is 120°.
4. The special device for disassembling and assembling gas turbine exhaust thermocouple fasteners according to claim 3, characterized in that: The left screw and the right screw have opposite thread directions.