Steam exhaust flow guide device of steam turbine
Through the design of the semi-ring structure and heat dissipation components, the problem of cumbersome disassembly of the steam exhaust diversion device of the turbine is solved, rapid disassembly and efficient heat dissipation are achieved, operation and maintenance flexibility and equipment stability are improved, and the efficient operation of the turbine is ensured.
Patent Information
- Application Number
- CN202510797170.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-16
- Publication Date
- 2025-08-15
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The disassembly process of existing steam turbine exhaust diversion devices is cumbersome, especially when there are too many bolts or rust or stuck, which causes maintenance and maintenance to take a long time and increase downtime.
The semi-ring structure and heat dissipation assembly design are adopted. Through the cooperation of the urging plate, pushing block and rotating plate, the flow diversion device can be quickly disassembled, and the refrigeration soft plate is used for efficient heat dissipation to reduce the equipment temperature.
It realizes rapid disassembly and efficient heat dissipation of the flow diversion device, reduces downtime, improves operation and maintenance flexibility and equipment stability, and ensures efficient operation of the turbine.
Smart Images
Figure CN120487285A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of steam turbines, and in particular to a steam turbine exhaust guide device. Background Art
[0002] Steam turbines are rotary power machines that convert steam thermal energy into mechanical energy and are widely used in power generation, chemical engineering, and other fields. During turbine exhaust, the steam exiting the final-stage blades has uneven velocity and direction. Direct entry into subsequent equipment can easily generate vortices, increase flow resistance and energy loss, and even cause equipment vibration. However, a flow guide device, with its rationally designed flow channel structure, guides the exhaust steam to flow evenly and smoothly, minimizing energy and pressure losses, improving turbine efficiency, reducing vibration and noise, and ensuring stable equipment operation. It also optimizes steam distribution within the condenser, enhancing condensation efficiency, and improving the overall economic efficiency of the equipment.
[0003] A steam turbine exhaust guide device typically consists of a guide housing, guide vanes, a support structure, and connecting components. The guide housing serves as the external framework, forming a channel for steam flow. The guide vanes are core components, with optimized shapes, angles, and arrangements to guide the flow direction of steam, adjust flow velocity distribution, and reduce eddy currents and resistance. The support structure secures the guide vanes and housing, ensuring the device remains stable under the loads generated by steam flow. Connecting components reliably connect the guide device to adjacent equipment such as the turbine cylinder and condenser, ensuring the sealing and integrity of the steam flow path. These components work together to achieve efficient exhaust steam diversion.
[0004] In the prior art, some steam turbine exhaust guide devices are all bolted to enable the guide devices on both sides to be disassembled. The bolt connections need to be disassembled and assembled one by one, which is cumbersome. As a result, disassembly and installation during inspection or maintenance are time-consuming and inefficient. Especially when there are many bolts or they are rusted or stuck, the disassembly difficulty is further increased, and the downtime is prolonged. Therefore, a steam turbine exhaust guide device is proposed to solve the above problems. Summary of the Invention
[0005] In order to make up for the above shortcomings, the present invention provides a steam turbine exhaust guide device, which aims to improve the existing technology of using bolts to disassemble the guide devices on both sides. The bolt connections need to be disassembled and assembled one by one, and the steps are cumbersome, resulting in a long time and low efficiency in disassembly and installation during inspection or maintenance. Especially when there are many bolts or they are rusted or stuck, the disassembly difficulty is further increased, and the downtime is prolonged.
[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A steam turbine exhaust guide device, comprising a semi-ring 1, wherein the exterior of the semi-ring 1 is fixedly connected to a protective shell, the front side of the protective shell is slidably connected to a force-applying plate, the rear side of the force-applying plate is fixedly connected to a connecting plate, the rear side of the connecting plate is fixedly connected to a pushing block, the left side of the pushing block is fixedly connected to a moving block, the left side of the moving block is rotatably connected to two rotating plates, the two rotating plates are rotatably connected to limiting blocks on their far sides, the right side of the pushing block is fixedly connected to a telescopic rod, and the exterior of the semi-ring 1 is fixedly connected to a heat dissipation component for dissipating heat from the device; As a further description of the above technical solution: The heat dissipation assembly includes a plurality of fixed blocks, the rear sides of the fixed blocks are fixedly connected to the outside of the half ring, and the interiors of the plurality of fixed blocks are fixedly connected to a refrigeration soft board; As a further description of the above technical solution: The top of the first half ring is fixedly connected to a top shell, and the interior of the top shell is fixedly connected to a guide ring; As a further description of the above technical solution: The inner wall of the protective shell is fixedly connected to a guide plate, and the rear side of the pushing block is slidably connected to the inside of the guide plate; As a further description of the above technical solution: The right side of the telescopic rod is fixedly connected to the inner wall of the protective shell, and the inner wall of the protective shell is fixedly connected to two rotating shafts; As a further description of the above technical solution: A spring is provided on the outside of the telescopic rod, and the right side of the spring is fixedly connected to the inner wall of the protective shell; As a further description of the above technical solution: The bottom of the half ring is fixedly connected with a flange, and the outer portion of the rotating plate is rotatably connected to the left side of the protective shell; As a further description of the above technical solution: The top of the flange is fixedly connected with a half ring 2, and the outside of the half ring 2 is fixedly connected with a limiting shell.
[0007] The present invention has the following beneficial effects: 1. In the present invention, the force plate moves, causing the push block to move, causing the moving block to drive the rotating plate to rotate, causing the limit block to disengage from the limit shell, causing the two half rings to disengage from each other, thereby realizing the disassembly of the guide device, making it possible to quickly deal with problems such as fouling and wear inside the guide device, improving operation and maintenance flexibility, thereby reducing downtime and ensuring turbine operation efficiency.
[0008] 2. In the present invention, the operator places the cooling soft plate in the fixed block. When the equipment is running, the heat generated is dissipated under the action of the cooling soft plate, so that the heat around the equipment is reduced, thereby achieving heat dissipation of the turbine exhaust guide device, optimizing the operating environment of the exhaust guide device, avoiding component performance degradation or failure due to high temperature, thereby improving the overall stability of the turbine, and maintaining stable exhaust parameters through efficient heat dissipation to ensure safe and efficient operation of the unit. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 This is a three-dimensional schematic diagram of a steam turbine exhaust guide device proposed by the present invention; Figure 2 This is a structural schematic diagram of a connecting plate of a steam turbine exhaust guide device proposed by the present invention; Figure 3 This is a structural schematic diagram of a guide plate of a steam turbine exhaust guide device proposed by the present invention; Figure 4 This is a structural schematic diagram of a guide plate of a steam turbine exhaust guide device proposed by the present invention.
[0010] Legend: 1. Half ring 1; 2. Protective shell; 3. Force plate; 4. Connecting plate; 5. Push block; 6. Moving block; 7. Rotating plate; 8. Limit block; 9. Rotating shaft; 10. Telescopic rod; 11. Spring; 12. Guide plate; 13. Fixed block; 14. Refrigeration soft plate; 15. Top shell; 16. Guide ring; 17. Flange; 18. Half ring 2; 19. Limit shell. DETAILED DESCRIPTION
[0011] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0012] Reference Figure 2 and Figure 3The present invention provides an embodiment of a steam turbine exhaust guide device, comprising a semi-ring 1. Semi-ring 1 serves as the basic framework of the steam turbine exhaust guide device and precisely adapts to the shape of the turbine exhaust port. A protective shell 2 is fixedly connected to the exterior of semi-ring 1. Protective shell 2 serves as an internal disassembly component, allowing operators to quickly and continuously disassemble the guide device. A force plate 3 is slidably connected to the front of protective shell 2. Force plate 3 receives the operator's pushing force to move. The exterior of force plate 3 is treated with a non-slip texture to increase friction for the operator. The rear side of the force-applying plate 3 is fixedly connected to a connecting plate 4, which is also fixedly connected to a push block 5. The connecting plate 4 connects the force-applying plate 3 and the push block 5, allowing the force applied by the force-applying plate 3 to be transmitted to the push block 5, causing the push block 5 to move. A moving block 6 is fixedly connected to the left side of the push block 5, which is rotatably connected to two rotating plates 7 on its left side. The moving block 6 receives the force of the push block 5 and moves, causing the two rotating plates 7 on the left side of the moving block 6 to rotate. The two rotating plates 7 are both rotatably connected to limit blocks 8 on opposite sides. The limit blocks 8 follow the rotational force of the rotating plates 7, thereby moving and connecting the two semi-rings. A telescopic rod 10 is fixedly connected to the right side of the push block 5. The telescopic rod 10 receives the force of the push block 5 and squeezes it, providing cushioning for the push block 5 during movement. A heat dissipation component for dissipating heat from the device is fixedly connected to the outside of the semi-ring 1.
[0013] Reference Figure 2 and Figure 4 The heat dissipation assembly includes multiple fixing blocks 13, the rear sides of which are fixedly connected to the exterior of half-ring 1. A cooling soft board 14 is fixedly connected to the interior of each fixing block 13. The fixing blocks 13 secure the cooling soft board 14, ensuring stable heat dissipation for the device. A quick-release mechanism allows operators to quickly replace the cooling soft board 14.
[0014] Reference Figures 1 to 3The top of the semi-ring 1 is fixedly connected to a top shell 15, and the inside of the top shell 15 is fixedly connected to a guide ring 16. The top shell 15 protects the internal guide ring 16, so that the guide ring 16 can operate stably. The inner wall of the protective shell 2 is fixedly connected to a guide plate 12, and the rear side of the push block 5 is slidably connected to the inside of the guide plate 12. The guide plate 12 allows the push block 5 to perform linear motion after receiving the force applied by the force plate 3, so that the moving block 6 also performs linear motion. It allows the two rotating plates 7 to rotate stably. The right side of the telescopic rod 10 is fixedly connected to the inner wall of the protective shell 2. The telescopic rod 10 receives the pushing force of the push block 5, thereby slowing down the push block 5. The inner wall of the protective shell 2 is fixedly connected to two rotating shafts 9. The rotating shafts 9 are the two rotating plates 7 that rotate around the two rotating shafts 9, so that the limit block 8 can stably limit the limit shell 19. The outside of the telescopic rod 10 is provided with a spring 11, and the right side of the spring 11 is fixedly connected to the inner wall of the protective shell 2. The spring 11 receives the pushing force of the push block 5, thereby buffering the pushing force of the push block 5 like the telescopic rod 10. The bottom of the semi-ring 1 is fixedly connected with a flange 17, and the flange 17 is convenient for the stable transmission of the equipment to make it stable. The external rotation of the rotating plate 7 is connected to the left side of the protective shell 2, and the rotating plate 7 receives the pushing force of the moving block 6 to move. The top of the flange 17 is fixedly connected with a semi-ring 2 18, and the external fixed connection of the semi-ring 2 18 is a limiting shell 19. The semi-ring 2 18 is combined with the semi-ring 1 to stabilize the guide ring 16. The limiting shell 19 is convenient for the connection between the semi-ring 1 and the semi-ring 2 18.
[0015] Working principle: The operator applies force to the force plate 3, so that the force plate 3 drives the connecting plate 4 to move, so that the connecting plate 4 drives the pushing block 5 to move, so that the pushing block 5 moves under the action of the guide plate 12, so that the pushing block 5 drives the moving block 6 to move, so that the two rotating plates 7 rotate, so that the two rotating plates 7 approach each other, so that the limit block 8 is separated from the control of the rotating plate 7, so that the half ring 1 and the half ring 2 18 are separated, thereby realizing the disassembly of the guide device, making it possible to quickly deal with problems such as fouling and wear inside the guide device, improving the flexibility of operation and maintenance, thereby reducing downtime to ensure the operation efficiency of the turbine.
[0016] When the equipment is running at high speed, the heat generated around the equipment is collided with the surrounding heat by the refrigeration soft plate 14 fixed in the fixed block 13, so that the heat can be quickly dissipated. The refrigeration soft plate 14 is also easy to disassemble and replace, making it quick to replace, thereby increasing the heat dissipation efficiency, thereby achieving heat dissipation of the turbine exhaust guide device, optimizing the operating environment of the exhaust guide device, avoiding component performance degradation or failure due to high temperature, thereby improving the overall stability of the turbine, and maintaining the exhaust parameters stable through efficient heat dissipation to ensure safe and efficient operation of the unit.
[0017] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A steam turbine exhaust guide device, comprising a half ring (1), characterized in that: The outside of the semi-ring (1) is fixedly connected to a protective shell (2), the front side of the protective shell (2) is slidably connected to a force plate (3), the rear side of the force plate (3) is fixedly connected to a connecting plate (4), the rear side of the connecting plate (4) is fixedly connected to a push block (5), the left side of the push block (5) is fixedly connected to a moving block (6), the left side of the moving block (6) is rotatably connected to two rotating plates (7), the two rotating plates (7) are rotatably connected to a limiting block (8) on their far sides, the right side of the push block (5) is fixedly connected to a telescopic rod (10), and the outside of the semi-ring (1) is fixedly connected to a heat dissipation component for dissipating heat from the device.
2. A steam turbine exhaust guide device according to claim 1, characterized in that: The heat dissipation assembly comprises a plurality of fixed blocks (13), the rear sides of the fixed blocks (13) are fixedly connected to the outside of the semi-ring one (1), and the interiors of the plurality of fixed blocks (13) are fixedly connected to a refrigeration soft plate (14).
3. The steam turbine exhaust guide device according to claim 1, characterized in that: The top of the half ring (1) is fixedly connected to a top shell (15), and the interior of the top shell (15) is fixedly connected to a guide ring (16).
4. The steam turbine exhaust guide device according to claim 1, characterized in that: The inner wall of the protective shell (2) is fixedly connected to a guide plate (12), and the rear side of the pushing block (5) is slidably connected to the inside of the guide plate (12).
5. The steam turbine exhaust guide device according to claim 1, characterized in that: The right side of the telescopic rod (10) is fixedly connected to the inner wall of the protective shell (2), and the inner wall of the protective shell (2) is fixedly connected to two rotating shafts (9).
6. The steam turbine exhaust guide device according to claim 5, characterized in that: A spring (11) is provided on the outside of the telescopic rod (10), and the right side of the spring (11) is fixedly connected to the inner wall of the protective shell (2).
7. The steam turbine exhaust guide device according to claim 1, characterized in that: The bottom of the half ring (1) is fixedly connected to a flange (17), and the outside of the rotating plate (7) is rotatably connected to the left side of the protective shell (2).
8. The steam turbine exhaust guide device according to claim 7, characterized in that: The top of the flange (17) is fixedly connected to a second half ring (18), and the outside of the second half ring (18) is fixedly connected to a limiting shell (19).