Water flow regulator of water turbine

Abstract

The utility model relates to the technical field of water turbines, and discloses a water flow regulator of a water turbine, which comprises a water inlet pipe, a water outlet pipe and a regulating mechanism arranged between the water inlet pipe and the water outlet pipe. The adjusting mechanism comprises a shell, an adjusting plate, a driving device and a controller; the two ends of the shell communicate with the water inlet pipe and the water outlet pipe correspondingly, and an adjusting cavity matched with the adjusting plate is formed in the shell. The adjusting plates are annularly arranged at equal intervals and rotatably arranged in the adjusting cavity, and the driving device is connected with the adjusting plates and used for driving the adjusting plates to rotate; the controller is electrically connected with the driving device and used for controlling operation of the driving device. A pressure sensor is arranged on the shell, second-level dynamic adjustment of water flow is achieved through sensor closed-loop control and a single-motor synchronous driving structure, and the response efficiency and stability of an adjusting system are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of water turbine, concretely relates to a water flow regulator of water turbine. BACKGROUND

[0002] In the operation process of water turbine, the accurate control of water flow plays a vital role for the stable operation and efficient power generation of water turbine. The existing water flow regulation mode has many problems, for example, the regulation precision is low, the water flow is difficult to accurately adjust according to actual demand, the regulation process is not flexible enough, the change of water turbine operation condition cannot be quickly responded, and part of the regulation device has complex structure, high manufacturing cost and great maintenance difficulty.

[0003] Therefore, it is urgent to design a novel water flow regulator of water turbine to solve the above problems. CONTENT OF UTILITY MODEL

[0004] The present application aims to solve the technical problem that the water flow regulation process is not flexible enough and the change of water turbine operation condition cannot be quickly responded in the prior art.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A water flow regulator of water turbine, comprising a water inlet pipe, a water outlet pipe and a regulating mechanism arranged between the water inlet pipe and the water outlet pipe, for regulating water flow to quickly respond to the change of water turbine operation condition.

[0007] The regulating mechanism comprises a shell, a regulating plate, a driving device and a controller.

[0008] The two ends of the shell are respectively communicated with the water inlet pipe and the water outlet pipe, and the shell is internally provided with a regulating cavity matched with the regulating plate; the regulating plate is annularly and equidistantly arranged and rotatably arranged in the regulating cavity, the driving device is connected with the regulating plate for driving the regulating plate to rotate, and the controller is electrically connected with the driving device for controlling the operation of the driving device.

[0009] Preferably, the two ends of the water inlet pipe and the water outlet pipe are respectively provided with flange mouths A, and the flange mouths A of the water inlet pipe and the water outlet pipe are respectively flange-connected with the flange mouths B of the two ends of the shell.

[0010] Preferably, the shell is provided with a center column in the center, the regulating plate is a fan-shaped plate with a rotating shaft in the middle, and the two ends of the rotating shaft are respectively rotatably connected with the center column and the shell and the rotating shaft penetrates through the shell.

[0011] As preferred, the driving device comprises an outer ring rotationally limited between the inner auxiliary wheel and the outer auxiliary wheel and located on the outer side of the shell, a connecting rod connected at one end to the top of the outer ring and rotationally connected at the other end to the rotating shaft, a large gear fixedly connected to one of the rotating shafts, a small gear engaged with the large gear and driven by the speed reducer motor;

[0012] The small gear is driven to rotate by the speed reducer motor, the small gear is engaged with the large gear to drive one of the rotating shafts to rotate, the rotating shaft is connected to the outer ring through the connecting rod, and the remaining rotating shafts are driven to rotate, so that the rotation of the adjusting plate is realized, the opening size of the shell is adjusted, and the water flow is adjusted.

[0013] As preferred, the motor mounting frame is fixedly arranged on the outer side of the shell, and the speed reducer motor is mounted and fixed on the motor mounting frame.

[0014] As preferred, the wheel shafts of the inner auxiliary wheel and the outer auxiliary wheel are rotationally arranged on the support, and the support is mounted and fixed on the shell.

[0015] As preferred, the center column is connected to the inner wall of the shell through three reinforcing plates arranged at equal distances in a ring shape, and the two ends of the reinforcing plate are respectively welded to the center column and the shell.

[0016] As preferred, the pressure sensor is arranged on the shell and located on both sides of the adjusting plate, and the pressure sensor is electrically connected to the controller and used for detecting the water pressure before and after the water flow in the adjusting cavity is adjusted.

[0017] As preferred, the flow sensor is arranged on the water inlet pipe and the water outlet pipe respectively, and the flow sensor is electrically connected to the controller and used for detecting the water flow of the water inlet pipe and the water outlet pipe.

[0018] Compared with the prior art, the technical effects and advantages of the utility model are:

[0019] (1) The adjusting mechanism of the water flow regulator of the water turbine is provided with an adjusting cavity in the shell, and the adjusting cavity contains adjusting plates arranged at equal distances in a ring shape. The center column is welded to the shell through three reinforcing plates, forming a triangular stable structure to withstand the radial impact force of high-pressure water flow and avoid deformation. The fan-shaped plate is designed, the middle part is provided with a rotating shaft, and the two ends are rotationally connected to the center column and the shell. The rotating angle range is 0°-90°, the flow is controlled by changing the opening area. The fan-shaped contour cooperates with the center column to optimize the shape of the flow channel and reduce vortex and energy loss.

[0020] (2) The speed reducer motor drives the small gear, the large gear and the single rotating shaft, and drives all the adjusting plates to rotate synchronously through the connecting rod and the outer ring structure, avoiding the synchronous error of multiple motors. The transmission ratio is stable, the torque is large, and it is suitable for high-pressure load. The speed reducer motor provides low speed and high torque to prevent the adjusting plate from being damaged by impact. The inner auxiliary wheel and the outer auxiliary wheel support the rotation of the outer ring, reduce the friction resistance, and limit the axial movement to ensure the gear engagement accuracy.

[0021] (3) The pressure sensor monitors the water pressure on both sides of the adjusting plate, calculates the pressure difference, and combines the flow data to calculate the flow resistance and flow coefficient. The flow sensor detects the flow of the inlet pipe and the outlet pipe, and reflects the real-time working condition of the water turbine. After receiving the sensor data, the controller compares it with the preset water turbine operating condition, calculates the required rotating angle of the adjusting plate through the algorithm, and sends instructions to the driving device to realize accurate adjustment of water flow. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structural schematic view of the utility model;

[0023] Figure 2 It is a first perspective view of the adjusting mechanism of the utility model;

[0024] Figure 3 It is a second perspective view of the adjusting mechanism of the utility model;

[0025] Figure 4 It is a top view of the utility model. Figure 2

[0026] In the figure: 1, inlet pipe; 2, outlet pipe; 3, adjusting mechanism; 31, shell; 32, adjusting plate; 33, flange B; 34, adjusting cavity; 35, center column; 36, rotating shaft; 37, inner auxiliary wheel; 38, outer auxiliary wheel; 39, outer ring; 310, connecting rod; 311, large gear; 312, speed reducer motor; 313, small gear; 314, motor mounting rack; 315, support; 316, reinforcing plate; 4, flange A; 5, pressure sensor; 6, flow sensor. DETAILED DESCRIPTION

[0027] 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 scope of protection of the utility model.

[0028] The application will be further described in detail below, Figures 1 to 4

[0029] The embodiment of the application discloses a water flow regulator of a water turbine, which comprises an inlet pipe 1, an outlet pipe 2 and an adjusting mechanism 3 arranged between the inlet pipe 1 and the outlet pipe 2. The adjusting mechanism 3 is used for adjusting water flow to quickly respond to the change of the operating condition of the water turbine.

[0030] The adjusting mechanism 3 comprises a shell 31, an adjusting plate 32, a driving device and a controller. ​​

[0031] The flange mouth A4 is arranged at the two ends of the inlet pipe 1 and the outlet pipe 2 respectively, and the flange mouth A4 at the outlet end of the inlet pipe 1 and the flange mouth A4 at the inlet end of the outlet pipe 2 are respectively connected with the flange mouth B33 at the two ends of the shell 31.

[0032] The pressure sensor 5 is arranged on the shell 31 and located at the two sides of the adjusting plate 32, and the pressure sensor 5 is electrically connected with the controller, and is used for detecting the water pressure before and after the water flow is adjusted in the adjusting cavity 34.

[0033] The flow sensor 6 is arranged on the inlet pipe 1 and the outlet pipe 2 respectively, and the flow sensor 6 is electrically connected with the controller, and is used for detecting the water flow of the inlet pipe 1 and the outlet pipe 2.

[0034] Through the bolt connection of the flange mouth A4 and the flange mouth B33, the regulator can be quickly disassembled for maintenance or replacement of parts, and the downtime is reduced. The flange connection cooperates with the gasket, which can effectively prevent water leakage and ensure the stability in the high-pressure environment. The standardized flange interface can adapt to different specifications of the inlet pipe 1 and the outlet pipe 2, and is convenient for system integration.

[0035] The controller monitors the water flow parameters (pressure, flow) in real time through the sensor, and the driving device (reduction motor 312+gear transmission) can quickly adjust the angle of the adjusting plate 32 to realize the dynamic matching of the water flow (such as second-level response when the load changes). The adjusting plate 32 arranged in a ring shape at equal intervals can accurately control the opening area of the shell 31 by rotating the angle (such as 0°~90°), and a closed-loop control is formed in combination with the sensor feedback. The fan-shaped design of the adjusting plate 32 cooperates with the center column 35 to make the flow passage smooth when the water flows through, reduce the vortex and energy loss, and improve the adjustment efficiency.

[0036] The two side pressure sensors 5 monitor the water pressure difference before and after the adjustment (such as ΔP=P1-P2), and in combination with the flow sensor 6 data (Qin, Qout), the controller can calculate the current flow coefficient through the Bernoulli equation or the empirical formula, and dynamically optimize the angle of the adjusting plate 32. When the pressure / flow fluctuates abnormally (such as pipe blockage, equipment leakage), the sensor triggers an alarm in time to avoid the accident from expanding.

[0037] The shell 31 is respectively communicated with the inlet pipe 1 and the outlet pipe 2 at the two ends, and the inside is provided with an adjusting cavity 34 matched with the adjusting plate 32; the adjusting plate 32 is arranged in a ring shape at equal intervals and rotatably arranged in the adjusting cavity 34, the driving device is connected with the adjusting plate 32, and is used for driving the adjusting plate 32 to rotate; the controller is electrically connected with the driving device, and is used for controlling the operation of the driving device.

[0038] The center column 35 is arranged at the center of the shell 31, and the adjusting plate 32 is a fan-shaped plate with a rotating shaft 36 in the middle, and the two ends of the rotating shaft 36 are respectively rotatably connected with the center column 35 and the shell 31, and the rotating shaft 36 penetrates the shell 31.

[0039] The driving device comprises an outer ring 39 rotationally limited between the inner auxiliary wheel 37 and the outer auxiliary wheel 38 and located on the outer side of the shell 31, a connecting rod 310 connected at one end to the top of the outer ring 39 and rotationally connected at the other end to the rotating shaft 36, a large gear 311 fixedly connected to one of the rotating shafts 36, and a small gear 313 engaged with the large gear 311 and driven by a speed reducer motor 312.

[0040] The rotation of the small gear 313 is driven by the speed reducer motor 312, the small gear 313 is engaged with the large gear 311 to drive one of the rotating shafts 36 to rotate, the rotating shaft 36 is connected to the outer ring 39 through the connecting rod 310, and the remaining rotating shafts 36 are driven to rotate, thereby realizing the rotation of the adjusting plate 32, adjusting the opening size of the shell 31, and realizing the adjustment of the water flow. Through the structure of the outer ring 39 and the connecting rod 310, a single speed reducer motor 312 can drive all the adjusting plates 32 to rotate synchronously, avoiding the synchronization error of traditional multiple motor driving, and ensuring uniform change of the opening area. The gear transmission (small gear 313→large gear 311) has the characteristics of stable transmission ratio and large torque, which is suitable for the load demand under high-pressure water flow; the speed reducer motor 312 can provide low-speed high-torque output, avoiding damage of the adjusting plate 32 due to excessive impact force. Even if a single adjusting plate 32 is stuck, the other plates can still work cooperatively to maintain the basic adjustment function, improving the system fault tolerance.

[0041] A motor mounting bracket 314 is fixedly arranged on the outer side of the shell 31, and the speed reducer motor 312 is mounted and fixed on the motor mounting bracket 314. The motor mounting bracket 314 serves as an independent support 315 to fix the speed reducer motor 312, avoiding that the shell 31 directly bears the motor vibration, and improving the stability of the driving system.

[0042] The wheel shafts of the inner auxiliary wheel 37 and the outer auxiliary wheel 38 are rotationally arranged on the support 315, and the support 315 is mounted and fixed on the shell 31. The inner auxiliary wheel 37 and the outer auxiliary wheel 38 cooperate to support the rotation of the outer ring 39, reduce the frictional resistance between the connecting rod 310 and the shell 31, make the adjustment process smoother, reduce energy consumption, limit the axial movement of the outer ring 39, and ensure the gear engagement accuracy.

[0043] The center column 35 is connected to the inner wall of the shell 31 through three reinforcing plates 316 arranged in a ring shape at equal distances, and the two ends of the reinforcing plate 316 are respectively welded to the center column 35 and the shell 31. The center column 35 is welded to the shell 31 through three reinforcing plates 316 arranged in a ring shape, forming a triangular stable structure, which can withstand the radial impact force of high-pressure water flow (such as the thrust of water flow on the adjusting plate 32), avoiding deformation of the shell 31. The rigid connection reduces the vibration amplitude during the adjustment process, prolongs the service life of the equipment, and improves the working environment.

[0044] The water flow regulator of the water turbine realizes dynamic regulation of water flow through the closed-loop control logic of real-time monitoring by sensors, intelligent operation by controllers, and precise execution by driving devices, and the specific process is as follows:

[0045] The flow sensor 6 detects the water flow of the inlet pipe 1 (Qin) and the outlet pipe 2 (Qout) in real time, reflecting the actual water inlet and outlet state of the water turbine.

[0046] The pressure sensor 5 monitors the water pressure (P1, P2) on both sides of the adjusting plate 32, calculates the water pressure difference (ΔP=P1-P2), and calculates the water flow resistance, flow coefficient, and other parameters through Bernoulli's equation or empirical formula combined with flow data.

[0047] After receiving the sensor data, the controller compares it with the preset water turbine operating conditions (such as load changes and power generation power requirements), calculates the required rotation angle of the adjusting plate 32 (such as 0°~90°) through an algorithm (such as PID control), and sends instructions to the driving device.

[0048] The reduction motor 312 starts according to the controller instructions, drives the pinion gear 313 to rotate. The pinion gear 313 meshes with the gear wheel 311, transmits power to one of the shafts 36, and drives the adjusting plate 32 to rotate. The shaft 36 is connected to the outer ring 39 through the connecting rod 310, and the outer ring 39 rotates under the support of the inner and outer auxiliary wheels 38, synchronously driving all the adjusting plates 32 to rotate around the center column 35, changing the opening area of the housing 31 (the larger the opening area, the larger the water flow), and realizing accurate regulation of water flow.

[0049] After adjustment, the sensors collect flow and pressure data again, which is fed back to the controller to form a closed-loop control, ensuring that the water flow always matches the real-time operating conditions of the water turbine.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features, as long as they are within the spirit and principles of the present application. Any modification, equivalent substitution, improvement, etc. made within the scope of the present application shall be included in the protection scope of the present application.

Claims

1. A water flow regulator for a hydraulic turbine, characterized in that, The utility model provides a water flow regulating device for hydraulic turbine, which comprises a water inlet pipe (1), a water outlet pipe (2) and a regulating mechanism (3) arranged between the water inlet pipe (1) and the water outlet pipe (2) for regulating the water flow to quickly respond to the change of the operating condition of the hydraulic turbine. The regulating mechanism (3) comprises a shell (31), a regulating plate (32), a driving device and a controller. The two ends of the shell (31) are respectively communicated with the water inlet pipe (1) and the water outlet pipe (2), and the inside of the shell (31) is provided with a regulating cavity (34) matched with the regulating plate (32); the regulating plate (32) is arranged in the regulating cavity (34) in a ring shape and at equal distances and is rotatably arranged in the regulating cavity (34); the driving device is connected with the regulating plate (32) and is used for driving the regulating plate (32) to rotate; and the controller is electrically connected with the driving device and is used for controlling the operation of the driving device.

2. A water flow regulator for a hydraulic turbine according to claim 1, characterized in that: The two ends of the water inlet pipe (1) and the water outlet pipe (2) are respectively provided with flange openings A (4), and the flange openings A (4) at the water outlet end of the water inlet pipe (1) and the water inlet end of the water outlet pipe (2) are respectively flange-connected with flange openings B (33) at the two ends of the shell (31).

3. A water flow regulator for a hydraulic turbine according to claim 1, characterized in that: The center of the shell (31) is provided with a center column (35), and the regulating plate (32) is a fan-shaped plate with a rotating shaft (36) in the middle; the two ends of the rotating shaft (36) are respectively rotatably connected with the center column (35) and the shell (31), and the rotating shaft (36) penetrates through the shell (31).

4. A water flow regulator for a hydraulic turbine according to claim 3, characterized in that: The driving device comprises an outer ring (39) rotatably arranged between an inner auxiliary wheel (37) and an outer auxiliary wheel (38) and located on the outer side surface of the shell (31), a connecting rod (310) having one end connected to the top of the outer ring (39) and the other end rotatably connected with the rotating shaft (36), a large gear (311) fixedly connected with one of the rotating shafts (36), and a small gear (313) engaged with the large gear (311) and driven by a speed reducer motor (312). The speed reducer motor (312) drives the small gear (313) to rotate, the small gear (313) is engaged with the large gear (311) to drive one of the rotating shafts (36) to rotate, the rotating shaft (36) is connected with the outer ring (39) through the connecting rod (310) to drive the remaining rotating shafts (36) to rotate, and the rotation of the regulating plate (32) is realized to adjust the opening size of the shell (31) and to realize the regulation of the water flow.

5. A water flow regulator for a hydraulic turbine according to claim 4, characterized in that: A motor mounting rack (314) is fixedly arranged on the outer side surface of the shell (31), and the speed reducer motor (312) is mounted and fixed on the motor mounting rack (314).

6. A water flow regulator for a hydraulic turbine according to claim 4, characterized in that: The shafts of the inner auxiliary wheel (37) and the outer auxiliary wheel (38) are rotatably arranged on a support (315), and the support (315) is mounted and fixed on the shell (31).

7. A water flow regulator for a hydraulic turbine according to claim 3, characterized in that: The center column (35) is connected with the inner wall surface of the shell (31) through three reinforcing plates (316) arranged in a ring shape and at equal distances, and the two ends of the reinforcing plate (316) are respectively welded with the center column (35) and the shell (31).

8. A water flow regulator for a hydraulic turbine according to claim 1, characterized in that: Pressure sensors (5) are arranged on the shell (31) and located on the two sides of the regulating plate (32), and the pressure sensors (5) are electrically connected with the controller and are used for detecting the water pressure before and after the water flow regulation in the regulating cavity (34).

9. A water flow regulator for a hydraulic turbine according to claim 1, characterized in that: The water inlet pipe (1) and the water outlet pipe (2) are respectively provided with flow sensors (6), the flow sensors (6) are electrically connected with the controller, and are used for detecting the water flow of the water inlet pipe (1) and the water outlet pipe (2).

Images