Multi-channel vibration monitoring device for water motor

Abstract

The utility model relates to the technical field of water motor vibration monitoring, and provides a multi-channel vibration monitoring device for a water motor, which comprises a shell, a communication interface, a power interface and a plurality of sensor interfaces are arranged on the side surface of the shell, and a central control module, a storage module, an alarm module, a communication module and a plurality of microcontrollers are arranged in the shell. The communication interface is electrically connected with the communication module, the number of the microcontrollers is the same as that of the sensor interfaces, the microcontrollers are electrically connected with the sensor interfaces, the sensor interfaces are connected with monitoring sensors, and the central control module is electrically connected with the storage module, the alarm module, the communication module and the microcontrollers. According to the technical scheme, the problems that in the prior art, data of all sensors depend on one signal processing unit, once the processing unit breaks down, the whole monitoring system cannot work normally, and the risk of single-point failure exists are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration and swing monitoring of hydraulic generators, and specifically, to a multi-channel vibration and swing monitoring device for hydraulic generators. Background Technique

[0002] The hydro-generator is one of the core equipment of a hydropower station. Its main function is to convert water energy into mechanical energy and then convert the mechanical energy into electrical energy through the generator. The hydro-generator usually includes two main parts: a water turbine and a generator. The water turbine uses the kinetic energy and potential energy of the water flow to drive the rotor to rotate, thereby driving the rotor in the generator to generate electromagnetic induction and generate current.

[0003] During the operation of the hydro-generator, vibration and swing are inevitable phenomena. Vibration and swing will not only affect the operation efficiency of the equipment, but may also lead to equipment damage and failures. Therefore, monitoring and analyzing the vibration and swing of the hydro-generator is an important means to ensure the safe and reliable operation of the equipment.

[0004] Traditional vibration and swing monitoring systems usually adopt a single-channel design, that is, the data of all sensors are aggregated to a signal processing unit for processing. Since the data of all sensors rely on a single signal processing unit, once this processing unit fails, the entire monitoring system will not be able to work properly, posing a risk of single-point failure. Content of the Utility Model

[0005] The utility model proposes a multi-channel vibration and swing monitoring device for hydraulic generators, which solves the problem of XX in the related technology.

[0006] The technical solution of the utility model is as follows:

[0007] A multi-channel vibration and swing monitoring device for hydraulic generators includes a housing. A communication interface, a power supply interface and several sensor interfaces are arranged on the side of the housing. A central control module, a storage module, an alarm module, a communication module and several microcontrollers are arranged inside the housing. The communication interface is electrically connected to the communication module. The number of microcontrollers is the same as the number of sensor interfaces. The microcontrollers are electrically connected to the sensor interfaces. The sensor interfaces are connected to monitoring sensors. The central control module is electrically connected to the storage module, the alarm module, the communication module and the microcontrollers.

[0008] Further, the microcontroller includes an analog-to-digital conversion module for converting the analog signal of the monitoring sensor into a digital signal, and a digital signal processing module for analyzing and judging the sensor data.

[0009] Further, the monitoring sensors include an acceleration sensor, a velocity sensor, a displacement sensor, a rotational speed sensor and a temperature sensor.

[0010] Further, a display screen and control buttons are provided on the front side of the housing, and heat dissipation holes are provided on the rear side of the housing. The heat dissipation holes are communicated with the inside of the housing. Both the display screen and the control buttons are electrically connected to the central control module.

[0011] Further, a mounting plate is fixedly connected to the rear side of the housing. A heat dissipation interval for facilitating heat dissipation of the heat dissipation holes is provided between the mounting plate and the housing. The mounting plate is detachably provided with a fixing member. A connecting protrusion is fixedly connected to the side of the fixing member facing the mounting plate. The mounting plate is provided with a connecting opening. The connecting protrusion is embedded in the connecting opening. The cross section of the connecting protrusion is in a "U" - shaped structure. Fixing holes are provided at the edge of the fixing member.

[0012] Further, the cross section of the mounting plate is in an "L" - shaped structure. Fixing rods are provided between the mounting plate and the rear side and the bottom of the housing. The mounting plate is fixedly connected to the housing through the fixing rods.

[0013] The working principle and beneficial effects of the present utility model are as follows:

[0014] The present utility model adopts a multi - channel independent design. Each channel is equipped with an independent micro - controller and a sensor interface. Each sensor interface corresponds to an independent micro - controller, which independently processes the data of its respective channel. This design avoids the situation where all data is concentrated in one signal processing unit for processing, reducing the risk of single - point failure. Even if the micro - controller of a certain channel fails, other channels can still work normally without affecting the operation of the overall system. The central control module receives the data processed by each micro - controller and conducts further summarization and analysis. This design ensures the coordination and integrity of the system, and at the same time utilizes the independent processing capabilities of each micro - controller to improve the processing efficiency and reliability of the system. When the micro - controller or sensor of a certain channel fails, the alarm module will promptly send an alarm signal to prompt the maintenance personnel to conduct inspections and maintenance, further improving the reliability and safety of the system. Through the independent micro - controller design, the present utility model effectively solves the problem of single - point failure risk existing in the traditional single - channel design. Description of the Drawings

[0015] The following further elaborates on the present utility model in detail in conjunction with the drawings and specific embodiments.

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a left view of the present utility model;

[0018] Figure 3 is a right view of the present utility model;

[0019] Figure 4 is Figure 2Cross-sectional view taken along line A-A;

[0020] Figure 5 is Figure 3 Cross-sectional view taken along line B-B.

[0021] Figure 6 is the circuit principle block diagram of the present utility model.

[0022] In the figure: 1, housing; 2, communication module; 3, power interface; 4, sensor interface; 5, mounting plate; 6, fixing member; 11, display screen; 12, control button; 13, heat dissipation hole; 51, fixing rod; 52, connection opening; 61, connection protrusion. Detailed implementation manner

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0024] Embodiment 1

[0025] As Figure 1 , Figure 2 , Figure 3 , Figure 6 shown, Embodiment 1 proposes a multi-channel vibration and swing monitoring device for a water turbine, including a housing 1. A communication interface, a power interface 3 and a plurality of sensor interfaces 4 are arranged on the side of the housing 1. A central control module, a storage module, an alarm module, a communication module 2 and a plurality of microcontrollers are arranged inside the housing 1. The communication interface is electrically connected to the communication module 2. The number of microcontrollers is the same as the number of sensor interfaces 4. The microcontrollers are electrically connected to the sensor interfaces 4. The sensor interfaces 4 are connected to monitoring sensors. The central control module is electrically connected to the storage module, the alarm module, the communication module 2 and the microcontrollers.

[0026] The housing 1 is used to provide protection and support, integrate various interfaces and modules, ensure the safety of internal components and the overall structural stability of the system, and facilitate the installation and maintenance of the system. The communication interface is used to provide a communication connection with external devices or systems, realize remote data transmission and remote monitoring of the system, and improve the operability and flexibility of the system. The power interface 3 is used to supply power to the entire monitoring device. The sensor interface 4 is used to connect the monitoring sensors and transmit the data collected by the sensors. The central control module is used to coordinate and control the work of each module, integrate the data of each channel, and perform unified processing and control, improving the overall coordination and efficiency of the system; the central control module of this embodiment uses a microprocessor of the STM32MP157C model. The microprocessor of the STM32MP157C model has a dual-core architecture, taking into account high performance and low power consumption, and is suitable for applications that require high-performance processing and real-time control. The storage module is used to store the collected monitoring data and system logs, provide data storage and historical data query functions, and support data analysis and fault diagnosis. The alarm module is used to send an alarm signal when an abnormal situation is detected, provide a real-time alarm function, timely remind maintenance personnel to handle it, and reduce the risk of equipment failure. The communication module 2 is used to realize data transmission and reception, communicate with external systems, enhance the networking ability of the system, support remote monitoring and management, and improve the intelligent level of the system; the communication module 2 of this embodiment can use wired communications such as CAN bus communication or RS485 serial communication, or wireless communications such as ZigBee, LoRa, WiFi, NB-IoT, and Bluetooth. A number of microcontrollers are used to independently process the data of each sensor. By the way that multiple microcontrollers correspond one-to-one with multiple sensor interfaces 4, the speed and reliability of data processing are improved, single-point failures are avoided, and the reliability and redundancy of the system are improved. The microcontroller of this embodiment uses a microcontroller of the STM32F407 model. The microcontroller of the STM32F407 model has a high-performance core and is suitable for processing sensor data with fast response. The monitoring sensors are used to measure physical parameters such as vibration and swing, provide real-time physical quantity data, and provide basic data for system monitoring and fault diagnosis.

[0027] In Embodiment 1, the microcontroller includes an analog-to-digital conversion module for converting the analog signal of the monitoring sensor into a digital signal, and a digital signal processing module for analyzing and judging the sensor data. The microcontroller of the STM32F407 model integrates an analog-to-digital conversion module (ADC) and a digital signal processing module (DSP), and can realize the conversion and processing judgment of sensor data.

[0028] In Embodiment 1, the monitoring sensors include an acceleration sensor, a velocity sensor, a displacement sensor, a rotational speed sensor, and a temperature sensor. The acceleration sensor is used to monitor the acceleration change of the hydropower generator. A piezoelectric acceleration sensor is adopted. The piezoelectric acceleration sensor has high sensitivity and a wide frequency band and can capture high-frequency vibrations. The velocity sensor is used to monitor the vibration velocity of the hydropower generator. An eddy current velocity sensor is adopted. The eddy current velocity sensor has the characteristics of high precision, a wide frequency band, non-contact measurement, and resistance to environmental influence. The displacement sensor is used to monitor the displacement change of the hydropower generator. An eddy current displacement sensor is adopted. The eddy current displacement sensor has the characteristics of high precision, high-frequency response, and resistance to high temperature and humidity. The rotational speed sensor is used to monitor the rotational speed of the hydropower generator. A magnetoelectric rotational speed sensor is adopted. The magnetoelectric rotational speed sensor can work in a humid and dusty environment and is suitable for the usage scenario of the hydro-generator. The temperature sensor is used to monitor the temperature change of the hydropower generator. A thermocouple temperature sensor is adopted. The thermocouple temperature sensor has the characteristics of high temperature resistance and fast response speed.

[0029] Embodiment 2

[0030] As Figures 1 to 5 shown, on the basis of Embodiment 1, Embodiment 2 is increased with a display screen 11 and control buttons 12 arranged on the front side of the housing 1, and heat dissipation holes 13 arranged on the rear side of the housing 1. The heat dissipation holes 13 communicate with the inside of the housing 1. Both the display screen 11 and the control buttons 12 are electrically connected to the central control module. The display screen 11 and the control buttons 12 are used to provide a man-machine interaction interface, display monitoring data and system status, and are for users to operate. The heat dissipation holes 13 are used to dissipate the heat inside the system, prevent the equipment from overheating, and ensure the stability and reliability of the system during long-term operation.

[0031] In Embodiment 2, a mounting plate 5 is fixedly connected to the rear side of the housing 1. A heat dissipation interval for facilitating the heat dissipation of the heat dissipation holes 13 is arranged between the mounting plate 5 and the housing 1. The mounting plate 5 is detachably provided with a fixing member 6. A connecting protrusion 61 is fixedly connected to the side of the fixing member 6 facing the mounting plate 5. The mounting plate 5 is provided with a connecting opening 52. The connecting protrusion 61 is embedded in the connecting opening 52. The cross-section of the connecting protrusion 61 is in a "U" - shaped structure. Fixing holes are arranged on the edge of the fixing member 6. The mounting plate 5 is used to fix and install the housing 1, facilitating the installation and disassembly of the system and improving the convenience and stability of installation. The heat dissipation interval is used to provide a heat dissipation space for facilitating the heat dissipation inside the housing 1. The fixing member 6 is used to be installed on a wall or other devices and to install the mounting plate 5 on the fixing member 6, thereby fixing the housing 1. The connecting protrusion 61 and the connecting opening 52 are used to realize the connection between the fixing member 6 and the mounting plate 5. The "U" - shaped connecting protrusion 61 can facilitate the connection between the connecting protrusion 61 and the connecting opening 52. The fixing holes are used to facilitate the passing of bolts, and then the fixing member 6 is fixed on a wall or other devices through the bolts.

[0032] In Embodiment 2, the cross-section of the mounting plate 5 is in an "L" shape. Fixing rods 51 are provided between the rear side and the bottom of the mounting plate 5 and the housing 1, and the mounting plate 5 is fixedly connected to the housing 1 through the fixing rods 51. The "L"-shaped mounting plate 5 can provide support for the back and bottom of the housing 1, thereby enabling the device to be more stably fixed to a wall or other devices. The fixing rods 51 are used to connect the mounting plate 5 and the housing 1.

[0033] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A multi-channel vibration and swing monitoring device for a water turbine generator, comprising a housing (1), characterized in that, The side of the housing (1) is provided with a communication interface, a power interface (3) and a plurality of sensor interfaces (4). Inside the housing (1), there are a central control module, a storage module, an alarm module, a communication module (2) and a plurality of microcontrollers. The communication interface is electrically connected to the communication module (2). The number of microcontrollers is the same as the number of sensor interfaces (4). The microcontrollers are electrically connected to the sensor interfaces (4). The sensor interfaces (4) are connected to monitoring sensors. The central control module is electrically connected to the storage module, the alarm module, the communication module (2) and the microcontrollers.

2. The multi-channel vibration and swing monitoring device for a water turbine generator according to claim 1, characterized in that The microcontroller includes an analog-to-digital conversion module for converting the analog signals of the monitoring sensors into digital signals and a digital signal processing module for analyzing and judging the sensor data.

3. The multi-channel vibration and swing monitoring device for a hydro-generator according to claim 1, characterized in that The monitoring sensors include an acceleration sensor, a speed sensor, a displacement sensor, a rotational speed sensor and a temperature sensor.

4. A multi-channel vibration and swing monitoring device for a water turbine generator, characterized in that, The front side of the housing (1) is provided with a display screen (11) and control buttons (12). The rear side of the housing (1) is provided with heat dissipation holes (13). The heat dissipation holes (13) are communicated with the inside of the housing (1). The display screen (11) and the control buttons (12) are both electrically connected to the central control module.

5. The multi-channel vibration and swing monitoring device for a hydraulic generator according to claim 4, characterized in that, A mounting plate (5) is fixedly connected to the rear side of the housing (1). A heat dissipation interval for facilitating the heat dissipation of the heat dissipation holes (13) is provided between the mounting plate (5) and the housing (1). The mounting plate (5) is detachably provided with a fixing member (6). A connecting protrusion (61) is fixedly connected to the side of the fixing member (6) facing the mounting plate (5). The mounting plate (5) is provided with a connecting opening (52). The connecting protrusion (61) is embedded in the connecting opening (52). The cross section of the connecting protrusion (61) is in a "U" - shaped structure. Fixing holes are provided at the edge of the fixing member (6).

6. The multi-channel vibration and swing monitoring device for a water turbine generator according to claim 5, characterized in that, The cross section of the mounting plate (5) is in an "L" - shaped structure. Fixing rods (51) are provided between the mounting plate (5) and the rear side and the bottom of the housing (1). The mounting plate (5) is fixedly connected to the housing (1) through the fixing rods (51).

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