A turbine intake integrated regulating valve and its control system

Abstract

This application provides an integrated intake regulating valve and control system for turbines, belonging to the field of turbine power generation technology, aiming to solve the problems of large size, heavy weight, and easy jamming at high temperatures in existing regulating valves. It includes an integrated intake housing, an airflow regulating component, and a drive device. The intake housing has an intake end and an outlet end; the airflow regulating component includes a moving grid and a stationary grid; the moving grid is rotatably connected to the outlet end; the stationary grid is coaxially arranged with the moving grid, and the moving grid can rotate relative to the stationary grid around a central axis; the width of the grid blades of both the moving and stationary grids is greater than the gap width between adjacent grid blades; the drive device is driven by the moving grid and is used to drive the moving grid to rotate relative to the stationary grid, thereby precisely regulating the opening and closing and magnitude of the airflow. This invention has a compact structure, precise regulation, is suitable for turbine engine intake regulation, and is easy to promote.

Description

Technical Field

[0001] This invention relates to an integrated turbine intake regulating valve and a control system for the regulating valve. It belongs to the field of turbine power generation technology. Background Technology

[0002] In existing turbine intake systems, the regulating valve is mostly a split structure, with the intake housing, regulating components and drive device installed separately, which has problems such as large size, large weight and easy jamming at high temperature; Current turbine intake systems primarily employ servo butterfly valves, adjusting the intake airflow by regulating the angle of the disc within the valve. While butterfly valves are relatively simple in structure among control valves, they still suffer from large size, heavy weight, and high drive power requirements. Due to their structural limitations, butterfly valves require independent installation space, thus necessitating a significant axial length. A butterfly valve consists of components such as the valve body, disc, valve shaft, sealing ring, and valve seat, resulting in considerable weight. During adjustment, the disc rotates in the airflow, requiring substantial torque to overcome aerodynamic forces; therefore, the actuating mechanism must possess sufficient torque. Actuating mechanisms can be either electric or pneumatic. Electric actuation requires a large and heavy servo motor, while pneumatic actuation is not only structurally complex but also requires a high-pressure air source, both of which impose additional burdens on the system. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a turbine intake integrated regulating valve and its matching control system that is compact in structure, precise in adjustment, and reliable in sealing.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an integrated turbine intake regulating valve, specifically comprising: An air intake housing, wherein the air intake housing is provided with an air inlet end and an air outlet end; An airflow regulating assembly includes a moving grid and a stationary grid; the moving grid is rotatably connected to the air outlet; the stationary grid is coaxially arranged with the moving grid, and the moving grid can rotate relative to the stationary grid around a central axis; the width of the grid blades of both the moving grid and the stationary grid is greater than the gap width between their respective adjacent grid blades.

[0005] When the moving grid completely overlaps with the stationary grid, the regulating valve is in the fully open state; When the moving grid partially overlaps with the stationary grid, the airflow area decreases, thus achieving throttling. When the moving grid and the stationary grid are completely intersected, the regulating valve is in a fully closed state; A driving device is connected to the moving grid and is used to drive the moving grid to rotate relative to the stationary grid; the air intake shell, the airflow regulating component and the driving device are integrated to form an integral structure.

[0006] Furthermore, the outer ring of the thrust bearing is fixedly connected to the outlet end; the inner ring of the thrust bearing is fixedly connected to the motion grid.

[0007] Furthermore, an installation ring extends outward from the inner ring of the stationary grid near the moving grid side; the inner ring of the moving grid is provided with a connecting bearing; the installation ring cooperates with the inner ring of the connecting bearing to form axial positioning.

[0008] Furthermore, a central sealing cap is provided on the inner ring of the moving grid; the diameter of the central sealing cap is larger than the inner diameter of the inner ring of the moving grid, but not larger than the outer diameter of the inner ring of the moving grid.

[0009] Furthermore, both the moving grid and the stationary grid contain multiple grid blades of the same specification, and the multiple grid blades are evenly arranged at equal angles along their respective circumferences.

[0010] Furthermore, a sealing ring is provided between the outer ring of the thrust bearing and the outlet end.

[0011] Furthermore, a rack is provided on the outer circumferential side of the motion grid; the gear on the drive device meshes with the rack.

[0012] Furthermore, the drive device also includes an angle sensor; the angle sensor is connected to the gear and monitors the rotation angle in real time.

[0013] Furthermore, it also includes a displacement sensor; the displacement sensor is synchronously connected to the rack and is used to detect the linear displacement of the rack.

[0014] The present invention also provides a control system for an integrated turbine intake regulating valve, including a drive module for driving the moving grid of the regulating valve to rotate relative to the stationary grid; The detection module is used to collect the displacement signal related to the opening degree of the motion grid of the regulating valve; The control module is used to control the drive module in a closed loop based on the displacement signal, adjust the rotation angle of the motion grid, and achieve precise control of the valve opening.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: 1. The space-saving design of the turbine intake structure for the adjustment mechanism does not add extra dimensions. The integrated structural design combines the intake housing, airflow adjustment components, and drive unit, simplifying the assembly process, reducing equipment size, and making installation more convenient.

[0016] 2. In this invention, the moving grid and the stationary grid are coaxially arranged and supported by a thrust bearing, which ensures smooth rotation and precise positioning. The relative rotation of the two grids enables graded regulation of the flow rate with high precision. Both the moving and stationary grids utilize circumferentially distributed grid plates for adjustment, resulting in good uniformity of airflow in the circumferential direction. Adjusting the grid plates to withstand axial aerodynamic forces employs thrust bearings. This requires relatively low driving force, simplifying the drive mechanism and overall structure while reducing weight. Furthermore, the moving grid is connected to the intake housing via thrust bearings, which provide stable radial and axial support, reduce rotational friction, withstand axial forces, and prevent eccentricity or shifting of the moving grid. This ensures smooth rotation and precise positioning of the moving grid and effectively prevents jamming caused by high temperatures.

[0017] 3. The central sealing cover and sealing ring work together to enhance sealing performance, prevent media leakage, protect internal components, and extend the service life of the equipment; IV. Dual detection by angle and displacement sensors, combined with the control system, enables closed-loop control and precise feedback to adjust the opening, meeting the high-precision requirements of the turbine intake system. Fifth, the structure is reasonably designed, with uniform and evenly arranged grid blades to ensure smooth airflow and reduce airflow resistance.

[0018] VI. The control system adopts closed-loop control logic. The control module uses the displacement signal related to the opening of the moving grid collected by the detection module to perform precision condition control on the rotation angle of the moving grid, so that the actual angle of the moving grid matches the target angle, thereby realizing closed-loop precise control of the valve opening. Attached Figure Description

[0019] Figure 1 A perspective view of an integrated turbine intake control valve; Figure 2 This is a schematic diagram of the transmission structure of the motion grid and the drive device; Figure 3 It is the connecting bearing between the moving grid and the stationary grid; Figure 4 This is a diagram showing the bearing installation position; Figure 5 This is a schematic diagram of the drive unit structure.

[0020] In the diagram: 1. Intake housing; 2. Drive unit; 3. Sealing ring; 4. Moving grid; 5. Center sealing cover; 6. Stationary grid; 7. Connecting bearing; 8. Mounting ring; 1. Air inlet; 12. Air outlet; 21. Servo motor; 22. Coupling; 23. Angle sensor; 24. Gear; 41. Gear rack. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] Example 1: Please see Figures 1 to 5 The present invention provides a technical solution: The integrated turbine intake regulating valve includes an intake housing 1, an airflow regulating assembly, and a drive unit 2. The intake housing 1 includes an intake end 11 and an outlet end 12 located at its front and rear ends. The airflow regulating assembly includes a moving grid 4 and a stationary grid 6; the moving grid 4 is rotatably mounted on the outlet end 12. The stationary grid 6 and the moving grid 4 are coaxially arranged, and the moving grid 4 can rotate relative to the stationary grid 6 around its central axis. Figure 3 and Figure 4As shown, in this embodiment, a connecting bearing 7 is used to assemble the two into one unit. The stationary grid 6 is located near the moving grid 4, and its inner ring extends outward with a mounting ring 8. The mounting ring 8 fits tightly with the inner ring of the connecting bearing 7, so that the stationary grid 6 is axially positioned in the axial direction of the connecting bearing 7, ensuring that the relative position of the moving grid 4 and the stationary grid 6 is accurate, without eccentricity or movement when the moving grid 4 rotates. Figure 3 The structure of the motion grid 4 is hidden in the middle, directly showing the assembly diagram of the bearing and mounting ring 8.

[0025] The structural design of its moving grid 4 and stationary grid 6 meets the following requirements: When the moving grid 4 and the stationary grid 6 completely overlap, their regulating valves are fully open, and the airflow flows through the gaps between the moving grid 4 and the stationary grid 6 respectively.

[0026] When the moving grid 4 partially overlaps with the stationary grid 6, the airflow area decreases, achieving throttling. Specifically, this can be achieved by continuously rotating the moving grid 4 relative to the stationary grid 6. The grid plates of the two grids overlap and misalign, and the overlapping gaps gradually decrease, thereby reducing the airflow area and achieving a regulating effect.

[0027] When the moving grid 4 and the stationary grid 6 are completely interleaved, the regulating valve is in a fully closed state. This means the grid plates on the moving grid 4 and the stationary grid 6 intersect, creating a barrier and preventing airflow. To ensure a tight seal in the fully closed state, the width of each grid blade on both the moving grid 4 and the stationary grid 6 must be greater than the gap between adjacent grid blades. This ensures that the gaps between the interleaved grid plates are completely covered.

[0028] In this embodiment, the drive device 2 and the moving grid 4 are connected by a transmission to drive the moving grid 4 to rotate relative to the stationary grid 6. A servo motor 21 is used for transmission in this embodiment. Specifically, the drive device 2 is fixedly mounted on the outside of the intake housing 1 using an existing mounting bracket. The servo motor 21 is fixedly mounted on the mounting bracket, and the servo motor 21 drives the gear 24 to rotate via a coupling 22. The gear 24 meshes with the rack 41 on the moving grid 4. When the gear 24 rotates, it drives the rack 41 to perform circumferential linear motion, thereby driving the moving grid 4 to rotate around its central axis.

[0029] like Figure 1 As shown, the air intake shell 1, airflow regulating component, and drive unit 2 are integrated into a single structure. This simplifies the assembly process, reduces the size of the equipment, and makes installation more convenient.

[0030] Optionally, the outer ring of the thrust bearing is fixedly connected to the outlet end 12 of the outlet housing, and the inner ring of the thrust bearing is fixedly connected to the motion grid 4, thereby allowing the installed motion grid 4 to rotate.

[0031] Optionally, a central sealing cap 5 is installed on the inner ring of the moving grid 4. The diameter of the central sealing cap 5 is set to be larger than the inner diameter of the inner ring of the moving grid 4, but not larger than the outer diameter of the inner ring of the moving grid 4. This setting ensures airtightness and prevents the airflow entering from the intake end 11 from seeping in through the side diameter of the inner ring of the moving grid 4, thus affecting the overall performance.

[0032] Optional, such as Figure 2 Both the moving grid 4 and the stationary grid 6 are equipped with multiple grid blades of the same specification, and the multiple grid blades are evenly arranged at equal angles along their respective circumferences.

[0033] Optional, such as Figure 2 As shown, a sealing ring 3 is installed between the outer end of the thrust bearing and the outlet end 12 to ensure the airtightness of the overall regulating valve, improve the accuracy of the regulating opening, and completely prevent the intrusion of external impurities of the medium.

[0034] Optional, such as Figure 4 and Figure 5 As shown, the drive device 2 also includes an angle sensor 23 and a displacement sensor. The angle sensor 23 is connected to the gear 24 to monitor the rotation angle in real time; the displacement sensor is synchronously connected to the rack 41 to detect the linear displacement of the rack 41. When the regulating valve in this embodiment is working, the servo motor 21 drives the gear 24 to rotate, and the gear 24 meshes with the rack 41 to drive the moving grid 4 to rotate relative to the stationary grid 6 around the central axis. When the blades of the moving grid 4 and the stationary grid 6 completely overlap, the regulating valve is fully open, and the airflow passes through without obstruction. When the two partially overlap, the airflow area is reduced, achieving throttling regulation. When the two completely overlap, the regulating valve is fully closed, blocking the airflow. The angle sensor 23 monitors the rotation angle of the gear 24 in real time and collects the rotation angle signal, while the displacement sensor collects and detects the linear displacement signal of the rack 41 in real time, providing data support for the precise control of the subsequent control system.

[0035] Example 2: This invention provides a control system technical solution for an integrated turbine intake regulating valve as described in Embodiment 1: The drive module is used to drive the moving grid 4 of the regulating valve to rotate relative to the stationary grid 6; The detection module is used to collect the opening-related displacement signal of the motion grid 4 of the regulating valve; The control module is used to control the drive module in a closed loop based on the displacement signal, adjust the rotation angle of the motion grid 4, and achieve precise control of the valve opening.

[0036] Specifically, the drive module receives control commands from the control module and drives the servo motor 21 to run. The servo motor 21 drives the gear 24 to rotate, and through the meshing transmission between the gear 24 and the rack 41, it drives the motion grid 4 to rotate, adjusting the rotation angle of the motion grid 4, thereby achieving the adjustment of the intake airflow. The drive module can flexibly adjust the output speed and direction of the servo motor 21 according to the control commands to ensure that the rotation angle of the motion grid 4 is precise and controllable.

[0037] The displacement sensor of the detection module is synchronously connected to the rack 41 to acquire the linear displacement signal of the rack 41 in real time. The angle sensor 23 is connected to the gear 24 to acquire the rotation angle signal of the gear 24 in real time and transmit it synchronously to the control module. The detection module filters and amplifies the acquired signals to eliminate interference signals, ensuring the stability and accuracy of signal transmission and avoiding control deviations caused by signal interference.

[0038] The control module has a pre-set control program and target opening parameters for different working conditions. After receiving the signal transmitted by the detection module, it converts the displacement of rack 41 and the rotation angle signal of gear 24 into the actual rotation angle of motion grid 4 through the internal conversion program. Then, the control module compares the actual rotation angle with the preset target angle and calculates the angle deviation. If the deviation between the actual angle and the target angle exceeds the set angle, the control module immediately generates a corresponding control command and feeds it back to the drive module to adjust the output speed and direction of servo motor 21, drive motion grid 4 to rotate until the actual angle of motion grid 4 matches the target angle, and completes one closed-loop adjustment.

[0039] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A turbine intake integrated regulating valve, characterized in that, include: An air intake housing, wherein the air intake housing is provided with an air inlet end and an air outlet end; An airflow regulating assembly includes a moving grid and a stationary grid; the moving grid is rotatably connected to the air outlet; the stationary grid is coaxially arranged with the moving grid, and the moving grid can rotate relative to the stationary grid around a central axis; the width of the grid blades of each of the moving grid and the stationary grid is greater than the gap width between two adjacent grid blades. When the moving grid completely overlaps with the stationary grid, the regulating valve is in the fully open state; When the moving grid partially overlaps with the stationary grid, the airflow area decreases, thus achieving throttling. When the moving grid and the stationary grid are completely intersected, the regulating valve is in a fully closed state; A driving device is connected to the moving grid and is used to drive the moving grid to rotate relative to the stationary grid; the air intake shell, the airflow regulating component and the driving device are integrated to form an integral structure.

2. The turbine intake integrated regulating valve according to claim 1, characterized in that, The outer ring of the thrust bearing is fixedly connected to the outlet end; the inner ring of the thrust bearing is fixedly connected to the motion grid.

3. The turbine intake integrated regulating valve according to claim 1, characterized in that, A mounting ring extends outward from the inner ring of the stationary grid near the moving grid side; the inner ring of the moving grid is provided with a connecting bearing; the mounting ring cooperates with the inner ring of the connecting bearing to form axial positioning.

4. The turbine intake integrated regulating valve according to claim 3, characterized in that, The inner ring of the moving grid is provided with a central sealing cover; the diameter of the central sealing cover is larger than the inner diameter of the inner ring of the moving grid, but not larger than the outer diameter of the inner ring of the moving grid.

5. The turbine intake integrated regulating valve according to claim 1, characterized in that, Both the moving grid and the stationary grid contain multiple grid blades of the same size, and the multiple grid blades are evenly arranged at equal angles along their respective circumferences.

6. The turbine intake integrated regulating valve according to claim 1, characterized in that, A sealing ring is provided between the outer ring of the thrust bearing and the outlet end.

7. The turbine intake integrated regulating valve according to claim 1, characterized in that, The outer ring of the motion grid is provided with a rack in the circumferential direction; the gear on the drive device meshes with the rack.

8. The turbine intake integrated regulating valve according to claim 7, characterized in that, The drive device also includes an angle sensor; the angle sensor is connected to the gear and monitors the rotation angle in real time.

9. The turbine intake integrated regulating valve according to claim 7 or 8, characterized in that, It also includes a displacement sensor; the displacement sensor is synchronously connected to the rack and is used to detect the linear displacement of the rack.

10. A control system for the turbine intake integrated regulating valve as described in claim 1, characterized in that, include: The drive module is used to drive the moving grid of the regulating valve to rotate relative to the stationary grid; The detection module is used to collect the displacement signal related to the opening degree of the motion grid of the regulating valve; The control module is used to control the drive module in a closed loop based on the displacement signal, adjust the rotation angle of the motion grid, and achieve precise control of the valve opening.

Images