Turbine paddle variable-pitch displacement device
By improving the structure of the turbine blade pitch displacement device, the precise adjustment of the moving blade angle is achieved by using components such as sliding plates and bolts. This solves the problems of complex structure and wear in existing devices, improves adjustment accuracy and reliability, and reduces energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI YANHAO ENG TECH CO LTD
- Filing Date
- 2025-06-09
- Publication Date
- 2026-04-10
AI Technical Summary
Existing turbine blade pitch displacement devices have complex structures, resulting in high manufacturing costs and difficult maintenance. Wear of mechanical transmission components creates gaps, affecting adjustment accuracy and reliability.
A novel structure consisting of components such as a support base, bearings, rotating plate, sliding plate, and bolts is used. The sliding plate is driven to slide by the sliding fixed frame, which in turn drives the rotating frame and connecting column to rotate. The sliding plate is fixed by bolts and nuts, thus achieving precise adjustment of the moving blade angle.
It enables precise adjustment of the moving blade angle, improves the operating efficiency of the steam turbine under different operating conditions, reduces energy consumption, and enhances the equipment's ability to adapt to complex environments.
Smart Images
Figure CN224107323U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to power machinery engineering field especially, relate to a turbine paddle variable pitch displacement device. BACKGROUND
[0002] A turbine paddle variable pitch displacement device is installed in the turbine paddle part, the paddle installation angle is changed through mechanical transmission, the paddle angle is adjusted, the force direction and size of steam or airflow on the paddle are changed, thereby the output power, rotating speed and operation efficiency of the turbine are flexibly adjusted, the stability and economy of the turbine under different working conditions are optimized, the energy loss is reduced, and the ability of the equipment to adapt to complex operating environment is improved.
[0003] A turbine paddle variable pitch displacement device mainly comprises a power driving module, a transmission mechanism, a displacement detection and feedback assembly, a mechanical support structure such as a rack and a bearing, and the like, and each component is fixed and the operation stability is ensured.
[0004] The structure is complex, the manufacturing cost and maintenance difficulty are increased, the gap is generated due to wear of the mechanical transmission component during long-term operation, and the adjustment accuracy and reliability are affected, therefore, the turbine paddle variable pitch displacement device is provided to solve the above problems. UTILITY MODEL CONTENTS
[0005] In order to make up for the above shortcomings, the utility model provides a turbine paddle variable pitch displacement device, which aims at improving the problem that the paddle angle is difficult to adjust in the prior art.
[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0007] A turbine paddle variable pitch displacement device comprises a support seat, a bearing is fixedly connected in the support seat, a plurality of rotating plates are connected outside the bearing, a connecting block is fixedly connected in the rotating plate, a rotating column is rotatably connected in the connecting block, a moving blade is fixedly connected outside the rotating column, a connecting column is fixedly connected outside the moving blade, a moving blade ring is rotatably connected outside the connecting column, a plurality of support plates are fixedly connected outside the moving blade ring, a rotating frame is fixedly connected outside the connecting column, a sliding plate is slidably connected in the support plate, and a plurality of fixing columns are fixedly connected outside the sliding plate.
[0008] As a further description of the above technical scheme:
[0009] A fixing frame is fixedly connected outside the sliding plate, two bolts are screw-connected in the fixing frame, and a plurality of connecting rods are rotatably connected between the fixing frame and the connecting column.
[0010] As a further description of the above technical solutions:
[0011] The outer part of the two bolts is threadedly connected with a nut, and the outer part of the bearing is fixedly connected with a fixed plate;
[0012] As a further description of the above technical solutions:
[0013] The outer part of the fixed plate is fixedly connected with a plurality of stationary vanes, and the outer part of the plurality of stationary vanes is fixedly connected with a stationary vane ring;
[0014] As a further description of the above technical solutions:
[0015] The outer part of the stationary vane ring is fixedly connected to the inner part of the support seat, and the outer part of the fixed column is slidingly connected to the inner part of the plurality of rotating frames;
[0016] As a further description of the above technical solutions:
[0017] The outer part of the bolt is threadedly connected to the inner part of the movable vane ring, and the bottom of the rotating frame is slidingly connected to the outer part of the sliding plate.
[0018] The utility model has the advantages of the following beneficial effects:
[0019] 1、The utility model discloses a sliding fixing frame, so that the sliding plate slides in the supporting plate, drives the fixed column, pushes the rotating frame, drives the connecting column to rotate, so that the connecting column drives the movable vane and the rotating column to rotate in the rotating plate, and the sliding plate is fixed with the bolt and the nut after adjusting the angle, so that it does not move, thereby achieving the effect of angle adjustment, realizing the accurate adjustment of the movable vane angle, and being capable of flexibly changing the force of steam on the vane according to the operation condition of the steam turbine. DRAWINGS
[0020] Figure 1 A three-dimensional schematic view of a steam turbine paddle variable pitch displacement device is provided for the utility model;
[0021] Figure 2 A structure schematic view of a movable vane of a steam turbine paddle variable pitch displacement device is provided for the utility model;
[0022] Figure 3 For Figure 2 An enlarged view of A in the middle
[0023] Figure 4 A structure schematic view of a stationary vane of a steam turbine paddle variable pitch displacement device is provided for the utility model;
[0024] LEGEND:
[0025] 1, support seat; 2, bearing; 3, rotating plate; 4, connecting block; 5, rotating column; 6, moving blade; 7, connecting column; 8, moving blade ring; 9, support plate; 10, rotating frame; 11, sliding plate; 12, fixed column; 13, fixed frame; 14, bolt; 15, nut; 16, fixed plate; 17, stationary blade; 18, stationary blade ring. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0027] Referring to Figures 1 to 3 , the utility model provides an embodiment: a turbine paddle variable displacement device, including support seat 1, support seat 1 is the basic component of whole device, provides stable support frame for turbine paddle variable displacement device, the inside fixed connection of support seat 1 has bearing 2, support rotating plate 3 and the connecting component such as moving blade 6 thereof, reduce the friction force in the rotating process, the outside of bearing 2 is connected with multiple rotating plates 3, play the role of power transmission and support moving blade 6 rotating plate 3's inside fixed connection has connecting block 4, main function is connecting rotating plate 3 with rotating column 5, make both form an organic whole connecting block 4's inside rotation connection has rotating column 5, is the rotating shaft of moving blade 6 realization angle change, the outside fixed connection of rotating column 5 has moving blade 6, is one of the core components of turbine realization energy conversion, the outside fixed connection of moving blade 6 has connecting column 7, make moving blade 6 can accurately carry out angle adjustment, is the important connecting link of realizing moving blade 6 variable pitch function, the outside of multiple connecting columns 7 is all rotationally connected with moving blade ring 8, make multiple moving blade 6 keep relatively fixed circumferential position, form a complete blade ring structure, the outside fixed connection of moving blade ring 8 has multiple support plates 9, inside is equipped with sliding groove, for installing sliding plate 11, provide direction and support for the linear sliding of sliding plate 11, the outside fixed connection of multiple connecting columns 7 has rotating frame 10, is the key component of converting the linear motion of sliding plate 11 into the rotary motion of moving blade 6, the inside sliding connection of multiple support plates 9 has sliding plate 11, through fixed frame 13 drive its horizontal sliding in support plate 9, the outside fixed connection of sliding plate 11 has multiple fixed columns 12, the linear motion of sliding plate 11 is converted into the swing motion of rotating frame 10.
[0028] Referring to Figure 1 , Figure 2 and Figure 4The outer part of the sliding plate 11 is fixedly connected with a fixing frame 13, which facilitates the rotation of the sliding plate 11, and after the angle of the moving blade 6 is adjusted to the position, the sliding plate 11 is fixed by the bolt 14 and the nut 15 so as to be immovable, the inner part of the fixing frame 13 is threadedly connected with two bolts 14 for fixing the sliding plate 11, the outer part of each of the two bolts 14 is threadedly connected with the nut 15 for further fixing and preventing the sliding plate 11 from moving, the outer part of the bearing 2 is fixedly connected with a fixing plate 16 for supporting and fixing the stationary blade 17, the outer part of the fixing plate 16 is fixedly connected with a plurality of stationary blades 17 for converting the kinetic energy of the steam into pressure energy and adjusting the flow rate and direction of the steam so that the steam impacts the moving blade 6 at a proper angle and speed, thereby improving the energy conversion efficiency of the steam turbine, the outer part of each of the plurality of stationary blades 17 is fixedly connected with a stationary blade ring 18, which plays a role of fixing and supporting the stationary blade 17, the outer part of the stationary blade ring 18 is fixedly connected to the inner part of the support base 1, so that the fixing plate 16, the stationary blade 17 and the stationary blade ring 18 are fixed in the inner part and are immovable, the outer part of the fixing column 12 is slidingly connected to the inner part of the plurality of rotating frames 10, which mainly plays a role of converting the linear motion of the sliding plate 11 into the swing motion of the rotating frame 10 to drive the connecting column 7 to rotate the moving blade 6, the outer part of the bolt 14 is threadedly connected to the inner part of the moving blade ring 8 for fixing the sliding plate 11, the bottom of the rotating frame 10 is slidingly connected to the outer part of the sliding plate 11, and the fixing column 12 is driven to move by the sliding plate 11, thereby driving the rotating frame 10, the connecting column 7 and the moving blade 6 to rotate.
[0029] Working principle: when it is needed to adjust the angle of the moving blade 6, the fixing frame 13 is slid, thereby driving the sliding plate 11 to slide in the support plate 9, the fixing column 12 on the sliding plate 11 moves, thereby driving the rotating frame 10, and the connecting column 7 is driven to rotate, thereby driving the connecting column 7, the moving blade 6 and the rotating column 5 to rotate in the connecting block 4, thereby changing the angle between the moving blades 6, and after the angle is adjusted, the sliding plate 11 is fixed by the bolt 14 and the nut 15 and is immovable, thereby achieving the adjustment of the blade pitch and realizing the precise adjustment of the moving angle, which can flexibly change the force of the steam acting on the blade according to the working condition of the steam turbine, thereby improving the operation efficiency of the steam turbine under different loads and reducing the energy consumption, so as to achieve the effect of adjusting the angle.
[0030] Finally, it should be pointed out that the above-mentioned is only the preferred embodiment of the utility model and is not used for limiting the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, the technical solution recorded in the foregoing embodiments can still be modified or some technical features can be replaced by the equivalent for the person skilled in the art, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A turbine blade pitch displacement device comprising a support base (1), characterised in that: The inside of the support base (1) is fixedly connected with a bearing (2), the outside of the bearing (2) is connected with a plurality of rotating plates (3), the inside of the rotating plate (3) is fixedly connected with a connecting block (4), the inside of the connecting block (4) is rotatably connected with a rotating column (5), the outside of the rotating column (5) is fixedly connected with a moving blade (6), the outside of the moving blade (6) is fixedly connected with a connecting column (7), the outside of the connecting column (7) is rotatably connected with a moving blade ring (8), the outside of the moving blade ring (8) is fixedly connected with a plurality of support plates (9), the outside of the connecting column (7) is fixedly connected with a rotating frame (10), the inside of the support plate (9) is slidably connected with a sliding plate (11), and the outside of the sliding plate (11) is fixedly connected with a plurality of fixed columns (12).
2. A turbine blade variable pitch displacement device according to claim 1, wherein: The outside of the sliding plate (11) is fixedly connected with a fixed frame (13), and the inside of the fixed frame (13) is threadedly connected with two bolts (14).
3. A turbine blade variable pitch displacement device according to claim 2, wherein: The outside of the bolt (14) is threadedly connected with a nut (15), and the outside of the bearing (2) is fixedly connected with a fixed plate (16).
4. A turbine blade variable pitch displacement device as claimed in claim 3, wherein: The outside of the fixed plate (16) is fixedly connected with a plurality of stationary blades (17), and the outside of the stationary blade (17) is fixedly connected with a stationary blade ring (18).
5. A turbine blade variable pitch displacement device as claimed in claim 4, wherein: The outside of the stationary blade ring (18) is fixedly connected to the inside of the support base (1), and the outside of the fixed column (12) is slidably connected to the inside of the rotating frame (10).
6. A turbine blade variable pitch displacement device as defined in claim 3 wherein: The outside of the bolt (14) is threadedly connected to the inside of the moving blade ring (8), and the bottom of the rotating frame (10) is slidably connected to the outside of the sliding plate (11).