High-precision detection and display device for rotating speed of unit

Abstract

A unit rotating speed high-precision detection display device comprises a rotating base body connected with a water pump unit shaft, quartering detection points are arranged on the rotating base body, each quartering detection point is provided with a photoelectric sensor and a speed sensor, the photoelectric sensors are used for detecting the positions of the quartering detection points on the rotating base body, and the speed sensors are used for detecting the positions of the quartering detection points on the rotating base body. The speed sensor is used for detecting rotation speed parameters of a shaft of the water pump unit; the quartering detection points are arranged in the grooves of the rotating base body respectively, the bottoms of the grooves are planes, and the situation that the bottoms of the grooves are uneven, and rotating speed detection of the water pump unit shaft is affected is avoided. The photoelectric sensor and the speed sensor are connected with the controller through an AD converter so as to transmit detected position signals and speed parameters to the controller.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of unit rotation speed high-precision detection display device. BACKGROUND

[0002] Water pump unit is mainly divided into mixed flow, inclined flow and through-flow, and its applicable lift and range are different, mixed flow and inclined flow water pump unit are mainly applied to large and medium-sized pumped storage power station, and the most widely used is mixed flow water pump unit, which can be applied to power generation application scene.

[0003] After long-term field work, water pump unit shaft needs to be regularly returned to factory for detection and maintenance, and the performance of water pump unit is evaluated by detecting and measuring the rotation speed of water pump unit;The existing device often detects by speed sensor installed at water pump unit shaft, and due to the deviation of the equidivision point, the overall detection result will be different, the precision is poor, so that the performance of water pump unit cannot be accurately evaluated. UTILITY MODEL CONTENT

[0004] The utility model embodiment provides a kind of unit rotation speed high-precision detection display device, and the structure design is reasonable, based on the integrated control principle of controller, cooperate multiple types of electrical components and functional components, can be simultaneously detected using multiple positions of speed sensor and photoelectric sensor, accurately determine the position of four equal division points on water pump unit shaft, and recess with flat bottom is set at the position of four equal division points, to avoid error in the process of rotation speed detection, ensure that speed sensor is accurately detected when running, and then the rotation speed of water pump unit is stably and accurately displayed, accurately evaluate the performance of water pump unit, solve the problems in prior art.

[0005] The utility model employs the technical scheme to solve the above technical problems:

[0006] A kind of unit rotation speed high-precision detection display device, the device includes the rotating matrix connected with water pump unit shaft, four equal division detection points are provided on rotating matrix, photoelectric sensor and speed sensor are respectively provided on each four equal division detection point, the photoelectric sensor is used to detect the position of four equal division detection points on rotating matrix, and the speed sensor is used to detect the rotation speed parameter of water pump unit shaft;

[0007] The four equal division detection points are respectively arranged in the recess of rotating matrix, the bottom of the recess is flat, to avoid that the recess bottom is not flat and affect the rotation speed detection of water pump unit shaft;

[0008] The photoelectric sensor and speed sensor are connected with controller by AD converter, to transmit the position signal and speed parameter detected to controller.

[0009] The controller is also connected to an instruction input device, a driver, and a display screen. The instruction input device is used to transmit control instructions to the controller, enabling automatic detection by photoelectric sensors and speed sensors.

[0010] The controller is connected to the water pump unit via a driver and transmits drive commands to the water pump unit to rotate; the display screen is used to display the rotation parameters of the water pump unit.

[0011] A triggering component is provided between the photoelectric sensor and the speed sensor. The triggering component is used to trigger the speed sensor to enter the working state to detect the rotational speed parameter of the water pump unit shaft when the photoelectric sensor detects the position of the four equally divided detection points. The triggering component is an electromagnetic relay.

[0012] The controller is an STM32F103C8T6 with 64 pins. The controller is connected to the instruction input device via pin 4, to the AD converter via pin 15, to the driver via pin 38, and to the display screen via pin 45.

[0013] The instruction input device is model TLP290, and has four pins. Pin 1 of the instruction input device is connected to the control instruction input pin. A ninth resistor, a tenth resistor, and a fourth capacitor are connected in parallel between pin 1 and pin 2 of the instruction input device. A fifth capacitor and an eighth resistor are connected in parallel between pin 3 and pin 4 of the instruction input device. Pin 3 of the instruction input device is connected to pin 4 of the controller.

[0014] The AD converter is model AD8551 and has 8 pins. The AD converter is connected to pin 15 of the controller through pin 6, and the AD converter is connected to the photoelectric sensor and the speed sensor through pin 3.

[0015] The driver is model ULN2003 and has 16 pins. The driver is connected to pin 38 of the controller via pin 1. A first relay is connected to pin 16 of the driver. A first resistor and a first diode are connected in parallel on the first relay. A drive interface is provided on the first relay.

[0016] Limiting blocks are provided above and below the rotating base to ensure that the rotating shaft of the water pump unit will not deviate during rotation.

[0017] This invention employs the aforementioned structure, using a photoelectric sensor to detect the positions of four equally divided detection points on the rotating base, and a speed sensor to detect the rotational speed parameters of the pump unit shaft. A command input device transmits control commands to the controller, enabling automatic detection by the photoelectric and speed sensors. A driver connects to the pump unit, transmitting drive commands to rotate the pump unit. A trigger component activates the speed sensor to detect the rotational speed parameters of the pump unit shaft when the photoelectric sensor detects the positions of the four equally divided detection points. This design offers advantages of precision, practicality, stability, and high efficiency. Attached image description:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the structure of the rotating base of this utility model.

[0020] Figure 3 This is a schematic diagram of the control principle of this utility model.

[0021] Figure 4 This is the electrical schematic diagram of the controller of this utility model.

[0022] Figure 5 This is the electrical schematic diagram of the instruction input device of this utility model.

[0023] Figure 6 This is the electrical schematic diagram of the driver of this utility model.

[0024] Figure 7 This is the electrical schematic diagram of the AD converter of this utility model.

[0025] In the diagram, 1 is the rotating base, 2 is the photoelectric sensor, 3 is the speed sensor, 4 is the four-part detection point, 5 is the groove, and 6 is the limiting block. Detailed implementation method:

[0026] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0027] like Figures 1-7 As shown, a high-precision detection and display device for unit speed includes a rotating base 1 connected to the shaft of a water pump unit. The rotating base 1 is provided with four equally divided detection points 4. Each of the four equally divided detection points is provided with a photoelectric sensor 2 and a speed sensor 3. The photoelectric sensor 2 is used to detect the position of the four equally divided detection points on the rotating base, and the speed sensor 3 is used to detect the rotation speed parameter of the water pump unit shaft.

[0028] The four equally divided detection points 4 are respectively set in the grooves 5 of the rotating base 1. The bottom of the groove 5 is flat to avoid uneven bottom of the groove affecting the speed detection of the water pump unit shaft.

[0029] The photoelectric sensor and speed sensor are connected to the controller via an AD converter to transmit the detected position signal and speed parameters to the controller.

[0030] The controller is also connected to an instruction input device, a driver, and a display screen. The instruction input device is used to transmit control instructions to the controller, enabling automatic detection by photoelectric sensors and speed sensors.

[0031] The controller is connected to the water pump unit via a driver and transmits drive commands to the water pump unit to rotate; the display screen is used to display the rotation parameters of the water pump unit.

[0032] A triggering component is provided between the photoelectric sensor and the speed sensor. The triggering component is used to trigger the speed sensor to enter the working state to detect the rotational speed parameter of the water pump unit shaft when the photoelectric sensor detects the position of the four equally divided detection points. The triggering component is an electromagnetic relay.

[0033] The controller is an STM32F103C8T6 with 64 pins. The controller is connected to the instruction input device via pin 4, to the AD converter via pin 15, to the driver via pin 38, and to the display screen via pin 45.

[0034] The instruction input device is model TLP290, and has four pins. Pin 1 of the instruction input device is connected to the control instruction input pin. A ninth resistor, a tenth resistor, and a fourth capacitor are connected in parallel between pin 1 and pin 2 of the instruction input device. A fifth capacitor and an eighth resistor are connected in parallel between pin 3 and pin 4 of the instruction input device. Pin 3 of the instruction input device is connected to pin 4 of the controller.

[0035] The AD converter is model AD8551 and has 8 pins. The AD converter is connected to pin 15 of the controller through pin 6, and the AD converter is connected to the photoelectric sensor and the speed sensor through pin 3.

[0036] The driver is model ULN2003 and has 16 pins. The driver is connected to pin 38 of the controller via pin 1. A first relay is connected to pin 16 of the driver. A first resistor and a first diode are connected in parallel on the first relay. A drive interface is provided on the first relay.

[0037] Limiting blocks 6 are provided above and below the rotating base 1 to ensure that the rotating shaft of the water pump unit will not deviate during rotation.

[0038] The working principle of a high-precision speed detection and display device for a pump unit in this embodiment is as follows: Based on the integrated control principle of the controller, and in conjunction with multiple types of electrical components and functional components, it can simultaneously detect speed sensors and photoelectric sensors at multiple locations to accurately determine the positions of the four equal division points on the pump unit shaft. A groove with a flat bottom is set at each of the four equal division points to avoid errors during speed detection, ensuring accurate detection by the speed sensors during operation. This allows for a stable and accurate display of the pump unit's speed, enabling accurate evaluation of the pump unit's performance and improving the stability and accuracy of the device's speed detection.

[0039] Generally, using a large horizontal lathe to precision machine the position where the speed sensor is installed on the outer diameter of the pump unit's shaft flange can eliminate the influence of the coupling runout on the sensor during unit operation; at the same time, the lathe can be used to find four equally divided detection points at the position where the speed sensor is installed.

[0040] Furthermore, the four equally divided detection points are respectively set in the grooves of the rotating base. The bottom of the groove is flat to avoid unevenness at the bottom of the groove affecting the speed detection of the pump unit shaft. The depth of the groove is 5mm, which can meet the requirement that the speed sensor can accurately measure the four equally divided detection points during operation.

[0041] The overall solution includes a rotating base connected to the shaft of the water pump unit. The rotating base is provided with four equally divided detection points. Each of the four equally divided detection points is provided with a photoelectric sensor and a speed sensor. The photoelectric sensor is used to detect the position of the four equally divided detection points on the rotating base, and the speed sensor is used to detect the rotational speed parameter of the shaft of the water pump unit.

[0042] The four equally divided detection points are respectively set in the groove of the rotating base. The bottom of the groove is flat to avoid unevenness at the bottom of the groove, which would affect the speed detection of the water pump unit shaft.

[0043] The photoelectric sensor and speed sensor are connected to the controller via an AD converter to transmit the detected position signal and speed parameters to the controller.

[0044] The controller is the core component of this application. The model selected is STM32F103C8T6. The controller has 64 pins. The controller is connected to the instruction input device through pin 4, the controller is connected to the AD converter through pin 15, the controller is connected to the driver through pin 38, and the controller is connected to the display screen through pin 45. This constitutes the overall hardware circuit, and the stable and accurate measurement of the shaft speed of the water pump unit is achieved by relying on the above overall hardware circuit.

[0045] Meanwhile, a triggering component is provided between the photoelectric sensor and the speed sensor, which can trigger the speed sensor to enter the working state to detect the rotational speed parameter of the water pump unit shaft when the photoelectric sensor detects the four equally divided detection points. This ensures that the photoelectric sensor and the speed sensor maintain the same detection sequence and improves the stability of speed detection.

[0046] Preferably, the command input device is model TLP290, which has four pins. Pin 1 of the command input device is connected to the control command input pin. A ninth resistor, a tenth resistor, and a fourth capacitor are connected in parallel between pin 1 and pin 2 of the command input device. A fifth capacitor and an eighth resistor are connected in parallel between pin 3 and pin 4 of the command input device. Pin 3 of the command input device is connected to pin 4 of the controller, which can transmit control commands to the controller and realize accurate detection of speed and automation.

[0047] Preferably, the AD converter is model AD8551, which has 8 pins. The AD converter is connected to pin 15 of the controller through pin 6, and the AD converter is connected to the photoelectric sensor and speed sensor through pin 3, which can convert the detected parameters into a data type that the controller can accurately identify.

[0048] Preferably, the actuator is model ULN2003, which has 16 pins. The actuator is connected to pin 38 of the controller via pin 1. A first relay is connected to pin 16 of the actuator. A first resistor and a first diode are connected in parallel on the first relay. The first relay has a drive interface that is electrically connected to the water pump unit. The controller transmits a drive signal to the water pump unit, causing the water pump unit to rotate and drive the rotating base to rotate. Parameter detection is performed at four equally divided detection points to obtain stable and accurate speed detection data.

[0049] It should be noted that limit blocks are provided above and below the rotating base to ensure that the rotating shaft of the water pump unit will not deviate during rotation.

[0050] The improved device makes speed measurement more accurate and the numerical display more stable. It can stably and accurately reflect the real-time operating speed of the unit. It is suitable for speed measuring devices of various large and medium-sized pumping stations and has high practicality and applicability. It can solve the problems of inaccurate and unstable speed measurement and numerical display caused by inaccurate division points, small groove size, uneven bottom of groove and uneven outer circle of measuring surface during speed detection.

[0051] In summary, the high-precision speed detection and display device for a pump unit in this embodiment is based on the integrated control principle of a controller. Combined with various electrical components and functional modules, it can simultaneously detect speeds and photoelectric sensors at multiple locations, accurately determining the positions of the four equal division points on the pump unit shaft. A groove with a flat bottom is provided at each of the four division points to avoid errors during speed detection, ensuring accurate detection by the speed sensors during operation. This allows for a stable and accurate display of the pump unit's speed, enabling accurate evaluation of the pump unit's performance and improving the stability and accuracy of the device's speed detection.

[0052] The above-described specific embodiments should not be construed as limiting the scope of protection of this utility model. For those skilled in the art, any alternative improvements or modifications made to the embodiments of this utility model shall fall within the scope of protection of this utility model.

[0053] Any aspects of this utility model not described in detail are known to those skilled in the art.

Claims

1. A high-precision detection and display device for generator unit speed, characterized in that: The device comprises a rotating base connected with a water pump unit shaft, four quarter detection points are arranged on the rotating base, and photoelectric sensors and speed sensors are arranged on each of the four quarter detection points respectively, the photoelectric sensors are used for detecting the positions of the four quarter detection points on the rotating base, and the speed sensors are used for detecting the rotating speed parameters of the water pump unit shaft; The four quarter detection points are arranged in grooves of the rotating base, the bottoms of the grooves are flat, so that the rotating speed detection of the water pump unit shaft is not affected by the uneven bottoms of the grooves; The photoelectric sensors and the speed sensors are connected with a controller through an AD converter, so as to transmit the detected position signals and speed parameters to the controller.

2. The device of claim 1, wherein the device is characterized by: An instruction input device, a driver and a display screen are further connected with the controller, the instruction input device is used for transmitting control instructions to the controller, so that the automatic detection of the photoelectric sensors and the speed sensors can be realized; The controller is connected with the water pump unit through the driver, transmits driving instructions to the water pump unit, and makes the water pump unit rotate; the display screen is used for displaying the rotating parameters of the water pump unit.

3. The device of claim 1, wherein the device is characterized by: A trigger assembly is arranged between the photoelectric sensors and the speed sensors, the trigger assembly is used for triggering the speed sensors to enter the working state to detect the rotating speed parameters of the water pump unit shaft when the photoelectric sensors detect the positions of the four quarter detection points; the trigger assembly is an electromagnetic relay.

4. The high-precision detection and display device for the rotating speed of a unit according to claim 2, characterized in that: The model of the controller is STM32F103C8T6, 64 pins are arranged on the controller, the fourth pin of the controller is connected with the instruction input device, the fifteenth pin of the controller is connected with the AD converter, the thirty-eighth pin of the controller is connected with the driver, and the forty-fifth pin of the controller is connected with the display screen.

5. The device of claim 4, wherein the device further comprises a display unit. The model of the instruction input device is TLP290, four pins are arranged on the instruction input device, the first pin of the instruction input device is connected with a control instruction input pin, the ninth resistor, the tenth resistor and the fourth capacitor are connected in parallel between the first pin and the second pin of the instruction input device, the fifth capacitor and the eighth resistor are connected in parallel between the third pin and the fourth pin of the instruction input device, and the third pin of the instruction input device is connected with the fourth pin of the controller.

6. The high-precision detection and display device for the rotating speed of a unit according to claim 4, characterized in that: The model of the AD converter is AD8551, eight pins are arranged on the AD converter, the sixth pin of the AD converter is connected with the fifteenth pin of the controller, and the third pin of the AD converter is connected with the photoelectric sensors and the speed sensors.

7. The device of claim 4, wherein the device further comprises a display unit. The model of the driver is ULN2003, 16 pins are arranged on the driver, the first pin of the driver is connected with the thirty-eighth pin of the controller, the first relay is connected to the sixteenth pin of the driver, the first resistor and the first diode are connected in parallel on the first relay, and a driving interface is arranged on the first relay.

8. The device of claim 1, wherein the device is characterized by: Limiting blocks are arranged above and below the rotating base, so that the rotating shaft of the water pump unit does not deviate during the rotating process.

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