Point position stress and inclination angle monitoring system and method for hoisting of main shaft of hydraulic generator

Abstract

The invention discloses a point stress and dip angle monitoring system and method for hoisting of a main shaft of a hydro-generator, and relates to the technical field of intelligent online monitoring. Comprising a point stress monitoring module, an inclination angle monitoring module, a working power supply, an alarm device and a display. The working power supply is electrically connected with the monitoring platform; the alarm device is electrically connected with the monitoring platform; and the display is electrically connected with the monitoring platform. Stress data of the lifting appliance and inclination angle data of the main shaft can be collected through intelligent operation, so that the influence of human factors can be avoided, the accuracy of a monitoring result can be ensured, time delay does not exist, a real-time monitoring result and an early warning prompt can be provided, and if an abnormal condition occurs, measures can be taken in time, so that the working efficiency is improved. And the safety is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of intelligent online monitoring, and in particular relates to a point stress and inclination monitoring system and method for hoisting a main shaft of a hydro-generator. Background Art

[0002] A hydro-turbine generator set is a device that converts water energy into mechanical energy, and then converts mechanical energy into electrical energy. The main function of the main shaft of a hydro-turbine generator set is to transmit the rotation of the turbine to the generator, while bearing the weight of the hydro-turbine generator set, axial water thrust, radial force of the bearing, and torsional stress. The main shaft hoisting monitoring during unit maintenance mainly relies on manual observation and empirical judgment, which is easily affected by human factors, and is subjective and unreliable. Different monitoring personnel may have different judgments on abnormal conditions during the hoisting process, resulting in differences in judgment results. In addition, it is impossible to achieve real-time monitoring results and early warning prompts. During the hoisting process, if an abnormal situation occurs, it may not be possible to take measures in time, which increases the safety risk. Therefore, it is urgent to propose an online monitoring method for point stress and inclination during the hoisting process of the main shaft of a hydro-turbine generator. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a point stress and inclination monitoring system and method for the hoisting of the main shaft of a hydro-turbine generator. The present invention can collect stress data and inclination data through intelligent operation, thereby avoiding the influence of human factors, ensuring the accuracy of the monitoring results, and there is no time delay. It can provide real-time monitoring results and early warning prompts. If an abnormal situation occurs, measures can be taken in time to improve safety.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: The point stress and inclination monitoring system for the main shaft hoisting of the turbine generator, the monitoring platform: includes the point stress monitoring module and the inclination monitoring module; The point stress monitoring module includes a stress acquisition module, a wireless communication module and a data storage module; the stress acquisition module is installed on the main shaft hanger of the hydro-generator and is used to collect stress data; the collected stress data is uploaded to the data storage module, the alarm device and the display via the wireless communication module; The inclination monitoring module includes an inclination data collector, a data parameter module, a data comparison module and a data analysis module; the inclination data collector is installed on the main shaft hanger of the hydro-generator and is used to collect inclination data; the collected stress data is uploaded to the data parameter module, the data comparison module and the data analysis module; Working power supply: The working power supply is electrically connected to the monitoring platform; Alarm device: The alarm device is electrically connected to the monitoring platform; Display: The display is electrically connected to the monitoring platform. Preferably, the stress acquisition module includes a plurality of strain gauges and strain meters corresponding to the strain gauges one by one, wherein the plurality of strain gauges are arranged and installed corresponding to the monitoring points designed according to the suspension area of ​​the main shaft hanger of the hydro-turbine generator and the stress concentration area.

[0005] Preferably, the wireless communication module is connected to the stress acquisition module and the data storage module via a network.

[0006] Preferably, the wireless communication module is selected from one of a WIFi module, a NB-IoT module and a Bluetooth module.

[0007] Preferably, the collected stress data is uploaded to the data parameter module, the data comparison module, and the data analysis module via the data receiver / transmitter; the data parameter module collects the data uploaded by the data receiver / transmitter and transmits it to the data comparison module. The data comparison module is preset with data parameters. The collected inclination data is compared through the data comparison module, and the compared data is analyzed through the data analysis module, and an analysis report is generated and uploaded to the alarm device.

[0008] Preferably, the working power source is a municipal power source or a battery.

[0009] Preferably, the alarm device has a built-in buzzer and a warning light.

[0010] Preferably, the inclination data collector is a digital inclinometer.

[0011] A monitoring method for a point stress and inclination monitoring system for a main shaft of a hydro-generator, comprising the following steps: Step 1: Install the monitoring platform: Step 1.1: Install the monitoring platform in a suitable location and ensure that it can communicate with each module normally; Step 1.2: Connect the working power supply to the monitoring platform to ensure that the monitoring platform has sufficient power supply; the working power supply can be municipal power supply or battery; Step 1.3: Connect the alarm device and display to the monitoring platform through wires to ensure that they can work normally; the alarm device has a built-in buzzer and warning light; Step 2: Install the stress acquisition module and inclination data collector: Step 2.1: Design monitoring points in the suspension area and stress concentration area of ​​the main shaft hanger of the turbine generator; Step 2.2: Install strain gauges at each monitoring point and connect them to the strain gauges to ensure that the strain gauges can accurately collect stress data; Step 2.3: Install a digital inclinometer on the main shaft hanger of the turbine generator to ensure that it can accurately collect inclination data; Step 2.4: Connect the strain gauge to the stress acquisition module to ensure that the stress data can be transmitted smoothly; Step 2.5: Connect the digital inclinometer to the data receiver / transmitter to ensure that the inclination data can be transmitted smoothly; Step 3: Data collection: Step 3.1: Collect stress data on the main shaft hanger of the turbine generator through the strain gauge; Step 3.2: Collect the inclination data of the main shaft hanger of the turbine generator through a digital inclinometer; Step 3.3: Transmit the collected stress data to the stress acquisition module; Step 3.4: Transmit the collected tilt angle data to the data receiver / transmitter; Step 4: Data transmission: Step 4.1: Upload stress data to the data storage module through the wireless communication module; Step 4.2: Upload the stress data to the alarm device through the wireless communication module; Step 4.3: Upload the stress data to the display via the wireless communication module; Step 4.4: Upload the inclination data to the data parameter module through the data receiver / transmitter; Step 4.5: The data parameter module transmits the received inclination data to the data comparison module; Step 4.6: The data comparison module compares the inclination data with the preset data parameters; Step 4.7: The compared data is transmitted to the data analysis module for further analysis and an analysis report is generated; Step 5: Data processing and alarm: Step 5.1: The alarm device has a built-in stress threshold, and the collected stress data is compared with the threshold; if the stress data exceeds the threshold, the alarm device sounds an alarm and prompts the operator through a buzzer and a warning light; Step 5.2: The alarm device has a built-in tilt angle threshold, and the collected tilt angle data is compared with the threshold; if the tilt angle data exceeds the threshold, the alarm device sounds an alarm and prompts the operator through a buzzer and a warning light; Step 5.3: The monitor displays and records the collected stress data so that the operator can view and record it; Step 5.4: The monitor displays and records the collected inclination data for the operator to view and record.

[0012] A computer device comprising: one or more processors; The processor is used to store one or more programs; When the one or more programs are executed by the one or more processors, the monitoring method of the point stress and inclination monitoring system for the main shaft hoisting of the hydro-turbine generator as claimed in claim 9 is implemented.

[0013] The present invention can achieve the following beneficial effects: The present invention can collect stress data and inclination data through intelligent operation, thereby avoiding the influence of human factors, ensuring the accuracy of monitoring results, and there is no time delay. It can provide real-time monitoring results and early warning prompts. If an abnormal situation occurs, measures can be taken in time to improve safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a system structure diagram of the present invention; Figure 2 This is a flow chart of point stress monitoring of the present invention; Figure 3 This is a flow chart of the tilt monitoring process of the present invention. DETAILED DESCRIPTION

[0015] Embodiment 1: The preferred solution is Figures 1 to 3 As shown in the figure, the point stress and inclination monitoring system for the main shaft hoisting of the turbine generator includes: Monitoring platform 1: including a point stress monitoring module 101 and an inclination monitoring module 102; The point stress monitoring module 101 includes a stress acquisition module 1011, a wireless communication module 1012 and a data storage module 1013; the stress acquisition module 1011 is installed on the main shaft hanger of the hydro-generator and is used to collect stress data; the collected stress data is uploaded to the data storage module 1013, the alarm device 3 and the display 4 via the wireless communication module 1012; The inclination monitoring module 102 includes an inclination data collector 1021, a data parameter module 1022, a data comparison module 1023 and a data analysis module 1024; the inclination data collector 1021 is installed on the main shaft hanger of the hydro-generator and is used to collect inclination data; the collected stress data is uploaded to the data parameter module 1022, the data comparison module 1023 and the data analysis module 1024; Working power supply 2: The working power supply 2 is electrically connected to the monitoring platform 1; Alarm device 3: Alarm device 3 is electrically connected to monitoring platform 1; Display 4: Display 4 is electrically connected to the monitoring platform 1.

[0016] Specifically, the monitoring platform 1 has a built-in point stress monitoring module 101, and the point stress monitoring module 101 includes a stress acquisition module 1011, a wireless communication module 1012 and a data storage module 1013. The stress acquisition module 1011 includes a plurality of strain gauges and strain meters corresponding to the strain gauges, wherein the plurality of strain gauges are arranged and installed in correspondence with the monitoring points designed according to the suspension area and the stress concentration area of ​​the main shaft hanger of the hydro-turbine generator; the stress of the main shaft hanger of the hydro-turbine generator is monitored in real time by the strain gauges and the strain meters. The wireless communication module 1012 is connected to the stress acquisition module 1011 and the data storage module 1013 through a network, and the wireless communication module 1012 selects one of a WIFi module, a NB-IoT module and a Bluetooth module; the wireless communication module 1012 can receive the data collected by the stress acquisition module 1011, and upload the real-time data to the data storage module 1013, and store the data through the data storage module 1013.

[0017] The working power supply 2 is electrically connected to the monitoring platform 1 through electric wires; the working power supply 2 uses a municipal power supply or a battery, and can provide power support for the monitoring platform 1 under the action of the working power supply.

[0018] The alarm device 3 is electrically connected to the monitoring platform 1 through electric wires; the alarm device 3 can achieve the purpose of alarm.

[0019] The display 4 is electrically connected to the monitoring platform 1 through electric wires; the display 4 can display the data monitored by the point stress monitoring module 101 for easy observation.

[0020] The monitoring principle of point stress is: stress data is collected through the stress acquisition module 1011 installed on the main shaft hanger of the turbine generator; the collected stress data is uploaded to the data storage module 1013, the alarm device 3 and the display 4 via the wireless communication module 1012; the alarm device 3 has a built-in threshold, and the collected stress data is compared with the threshold to determine whether it exceeds the threshold. If it exceeds the threshold, the alarm device 3 will issue an alarm; it is displayed and recorded via the display 4.

[0021] The tilt monitoring module 102 includes a tilt data collector 1021, a data parameter module 1022, a data comparison module 1023 and a data analysis module 1024. The tilt data collector 1021 uses a digital display inclinometer; it can realize the monitoring and display of tilt data. The tilt data collector 1021, the data parameter module 1022, the data comparison module 1023 and the data analysis module 1024 are connected to each other through a data receiver / transmitter; under the action of the data receiver / transmitter, the connectivity of the tilt data collector 1021, the data parameter module 1022, the data comparison module 1023 and the data analysis module 1024 can be guaranteed, that is, data transmission can be achieved.

[0022] The principle of inclination monitoring is as follows: the inclination data is collected by the inclination data collector 1021 installed on the main shaft hanger of the turbine generator; the collected stress data is uploaded to the data parameter module 1022, the data comparison module 1023, and the data analysis module 1024 via the data receiver / transmitter; the data parameter module 1022 collects the data uploaded by the data receiver / transmitter and transmits it to the data comparison module 1023, the data comparison module 1023 is preset with data parameters, the collected inclination data is compared by the data comparison module 1023, the compared data is analyzed by the data analysis module 1024, and an analysis report is generated and uploaded to the alarm device 3; the alarm device 3 has a built-in threshold, and the collected inclination data is compared with the threshold to determine whether it exceeds the threshold. If it exceeds the threshold, the alarm device will sound an alarm; it is displayed and recorded via the display 4.

[0023] Embodiment 2: A monitoring method for a point stress and inclination monitoring system for a main shaft of a hydro-generator, comprising the following steps: Step 1: Install the monitoring platform: Step 1.1: Install the monitoring platform 1 at a suitable location to ensure that it can communicate normally with each module; Step 1.2: Connect the working power supply 2 to the monitoring platform 1 to ensure that the monitoring platform 1 has sufficient power supply; the working power supply 2 can be a municipal power supply or a battery; Step 1.3: Connect the alarm device 3 and the display 4 to the monitoring platform 1 through wires to ensure that they can work normally; the alarm device 3 has a built-in buzzer and a warning light; Step 2: Install the stress acquisition module and inclination data collector: Step 2.1: Design monitoring points in the suspension area and stress concentration area of ​​the main shaft hanger of the turbine generator; Step 2.2: Install strain gauges at each monitoring point and connect them to the strain gauges to ensure that the strain gauges can accurately collect stress data; Step 2.3: Install a digital inclinometer on the main shaft hanger of the turbine generator to ensure that it can accurately collect inclination data; Step 2.4: Connect the strain gauge to the stress acquisition module 1011 to ensure that stress data can be transmitted smoothly; Step 2.5: Connect the digital inclinometer to the data receiver / transmitter to ensure that the inclination data can be transmitted smoothly; Step 3: Data collection: Step 3.1: Collect stress data on the main shaft hanger of the turbine generator through the strain gauge; Step 3.2: Collect the inclination data of the main shaft hanger of the turbine generator through a digital inclinometer; Step 3.3: Transmit the collected stress data to the stress collection module 1011; Step 3.4: Transmit the collected tilt angle data to the data receiver / transmitter; Step 4: Data transmission: Step 4.1: Upload stress data to the data storage module 1013 via the wireless communication module 1012; Step 4.2: Upload the stress data to the alarm device 3 via the wireless communication module 1012; Step 4.3: Upload the stress data to the display 4 via the wireless communication module 1012; Step 4.4: Upload the inclination data to the data parameter module 1022 via the data receiver / transmitter; Step 4.5: The data parameter module 1022 transmits the received tilt angle data to the data comparison module 1023; Step 4.6: The data comparison module 1023 compares the inclination data with the preset data parameters; Step 4.7: The compared data is transmitted to the data analysis module 1024 for further analysis and generating an analysis report; Step 5: Data processing and alarm: Step 5.1: The alarm device 3 has a built-in stress threshold, and the collected stress data is compared with the threshold; if the stress data exceeds the threshold, the alarm device 3 sounds an alarm and prompts the operator through a buzzer and a warning light; Step 5.2: The alarm device 3 has a built-in tilt angle threshold, and the collected tilt angle data is compared with the threshold; if the tilt angle data exceeds the threshold, the alarm device 3 sounds an alarm and prompts the operator through a buzzer and a warning light; Step 5.3: The display 4 displays and records the collected stress data so that the operator can view and record it; Step 5.4: The display 4 displays and records the collected inclination data so that the operator can view and record them.

[0024] This method realizes the online monitoring of point stress and inclination during the hoisting process of the main shaft of the hydro-generator. The monitoring platform 1 integrates the stress acquisition module 1011 and the inclination monitoring module 102, and transmits data in real time through the wireless communication module 1012 and the data receiver / transmitter. The alarm device 3 and the display 4 timely feedback the monitoring results to ensure that the operator can take measures in time to avoid accidents. This method not only improves the safety and reliability of the hoisting process.

[0025] Embodiment 3: A computer device comprising: one or more processors; The processor is used to store one or more programs; When the one or more programs are executed by the one or more processors, the monitoring method of the point stress and inclination monitoring system for the main shaft hoisting of the hydro-generator is implemented.

[0026] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. The point stress and inclination monitoring system for the main shaft hoisting of the turbine generator is characterized by: include: Monitoring platform (1): comprising a point stress monitoring module (101) and an inclination monitoring module (102); The point stress monitoring module (101) comprises a stress acquisition module (1011), a wireless communication module (1012) and a data storage module (1013); the stress acquisition module (1011) is installed on the main shaft hanger of the hydro-generator and is used to collect stress data; the collected stress data is uploaded to the data storage module (1013), the alarm device (3) and the display (4) via the wireless communication module (1012); The inclination monitoring module (102) comprises an inclination data collector (1021), a data parameter module (1022), a data comparison module (1023) and a data analysis module (1024); the inclination data collector (1021) is installed on the main shaft hanger of the hydro-generator and is used to collect inclination data; the collected stress data is uploaded to the data parameter module (1022), the data comparison module (1023) and the data analysis module (1024); Working power supply (2): the working power supply (2) is electrically connected to the monitoring platform (1); Alarm device (3): the alarm device (3) is electrically connected to the monitoring platform (1); Display (4): The display (4) is electrically connected to the monitoring platform (1).

2. The point stress and inclination monitoring system for main shaft hoisting of a hydro-generator according to claim 1 is characterized in that: The stress acquisition module (1011) comprises a plurality of strain gauges and strain meters corresponding to the strain gauges one by one, wherein the plurality of strain gauges are arranged and installed corresponding to monitoring points designed according to the suspension area of ​​the main shaft hanger of the hydro-turbine generator and the stress concentration area.

3. The point stress and inclination monitoring system for main shaft hoisting of a hydro-generator according to claim 1 is characterized in that: The wireless communication module (1012) is connected to the stress acquisition module (1011) and the data storage module (1013) via a network.

4. The point stress and inclination monitoring system for main shaft hoisting of a hydro-generator according to claim 1 is characterized in that: The wireless communication module (1012) is selected from one of a WIFi module, a NB-IoT module and a Bluetooth module.

5. The point stress and inclination monitoring system for main shaft hoisting of a hydro-generator according to claim 1 is characterized by: The collected stress data is uploaded to the data parameter module (1022), the data comparison module (1023), and the data analysis module (1024) via the data receiver / transmitter; the data parameter module (1022) collects the data uploaded by the data receiver / transmitter and transmits it to the data comparison module (1023); the data comparison module (1023) is preset with data parameters; the collected inclination data is compared via the data comparison module (1023); the compared data is analyzed via the data analysis module (1024), and an analysis report is generated and uploaded to the alarm device (3).

6. The point stress and inclination monitoring system for main shaft hoisting of a hydro-generator according to claim 1 is characterized by: The working power source (2) is selected from a municipal power source or a battery.

7. The point stress and inclination monitoring system for main shaft hoisting of a hydro-generator according to claim 1 is characterized by: The alarm device (3) has a built-in buzzer and a warning light.

8. The point stress and inclination monitoring system for main shaft hoisting of a hydro-generator according to claim 1 is characterized by: The inclination data collector (1021) is a digital inclinometer.

9. The monitoring method of the point stress and inclination monitoring system for the main shaft hoisting of a hydro-generator according to any one of claims 1 to 8, characterized in that The following steps are involved: Step 1: Install the monitoring platform: Step 1.1: Install the monitoring platform (1) in a suitable location and ensure that it can communicate with each module normally; Step 1.2: Connect the working power supply (2) to the monitoring platform (1) to ensure that the monitoring platform (1) has sufficient power supply; the working power supply (2) can be a municipal power supply or a battery; Step 1.3: Connect the alarm device (3) and the display (4) to the monitoring platform (1) through wires to ensure that they can work normally; the alarm device (3) has a built-in buzzer and a warning light; Step 2: Install the stress acquisition module and inclination data collector: Step 2.1: Design monitoring points in the suspension area and stress concentration area of ​​the main shaft hanger of the turbine generator; Step 2.2: Install strain gauges at each monitoring point and connect them to the strain gauges to ensure that the strain gauges can accurately collect stress data; Step 2.3: Install a digital inclinometer on the main shaft hanger of the turbine generator to ensure that it can accurately collect inclination data; Step 2.4: Connect the strain gauge to the stress acquisition module (1011) to ensure that stress data can be transmitted smoothly; Step 2.5: Connect the digital inclinometer to the data receiver / transmitter to ensure that the inclination data can be transmitted smoothly; Step 3: Data collection: Step 3.1: Collect stress data on the main shaft hanger of the turbine generator through the strain gauge; Step 3.2: Collect the inclination data of the main shaft hanger of the turbine generator through a digital inclinometer; Step 3.3: Transmitting the collected stress data to the stress acquisition module (1011); Step 3.4: Transmit the collected tilt angle data to the data receiver / transmitter; Step 4: Data transmission: Step 4.1: Upload the stress data to the data storage module (1013) via the wireless communication module (1012); Step 4.2: Uploading the stress data to the alarm device (3) via the wireless communication module (1012); Step 4.3: Uploading the stress data to the display (4) via the wireless communication module (1012); Step 4.4: Upload the inclination data to the data parameter module (1022) through the data receiver / transmitter; Step 4.5: The data parameter module (1022) transmits the received tilt angle data to the data comparison module (1023); Step 4.6: The data comparison module (1023) compares the inclination data with the preset data parameters; Step 4.7: The compared data is transmitted to the data analysis module (1024) for further analysis and generating an analysis report; Step 5: Data processing and alarm: Step 5.1: The alarm device (3) has a built-in stress threshold, and the collected stress data is compared with the threshold; if the stress data exceeds the threshold, the alarm device (3) sounds an alarm and prompts the operator through a buzzer and a warning light; Step 5.2: The alarm device (3) has a built-in tilt angle threshold, and compares the collected tilt angle data with the threshold; if the tilt angle data exceeds the threshold, the alarm device (3) sounds an alarm and prompts the operator through a buzzer and a warning light; Step 5.3: The display (4) displays and records the collected stress data so that the operator can view and record it; Step 5.4: The display (4) displays and records the collected inclination data so that the operator can view and record them.

10. A computer device, characterized in that: include: one or more processors; The processor is used to store one or more programs; When the one or more programs are executed by the one or more processors, the monitoring method of the point stress and inclination monitoring system for the main shaft hoisting of the hydro-turbine generator as claimed in claim 9 is implemented.

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