An online digital monitoring device for working conditions of a trash boom

Abstract

The present application relates to the field of power system hydroelectric generating set equipment, disclose a kind of on-line digital monitoring device of trash rack working condition.The device includes: liquid level sensor, data line, digital converter, force state AI diagnostic program.Through installing liquid level sensor in each float chamber of trash rack, the water inlet condition in the float is monitored, when the liquid level reaches the preset threshold, the sensor transmits signal to control center, triggers alarm device and records fault location.The present application has the following effects: realize the on-line digital monitoring of trash rack working condition, solve the problem that trash rack sinking cannot be found in time, ensure the long-term stable operation of hydroelectric generating set.

Description

Technical Field

[0001] This invention relates to the field of hydroelectric generator equipment in power systems, specifically to an online digital monitoring device for the working status of a wastewater interception system. Background Technology

[0002] The debris screen is a floating device in the power plant reservoir area. It floats on the water surface all year round. The debris screen consists of floats and screens. When working, it needs to stay on the water surface as a whole. The screens prevent scum, garbage and other debris from entering the water intake of the generator unit and prevent damage to the flow-through components of the turbine generator unit.

[0003] Because the equipment is made of welded metal, the floating pontoons of the debris barrier will inevitably rust or even crack over time, causing water to seep into the pontoons and resulting in the overall sinking of the debris barrier, thus affecting its debris-blocking function.

[0004] In existing technologies, the sinking of the debris discharge pontoon requires visual observation to detect, making it impossible to monitor the water ingress inside the pontoon in real time. This results in the inability to detect and address the problem promptly, seriously affecting the safe and stable operation of the unit and the power grid.

[0005] CN113969568A discloses an automatic treatment method for floating debris in low-head water conservancy projects based on visual recognition. The method comprises the following steps: (1) setting up a guide wall in the direction of water flow in the river channel; (2) using a debris interceptor to guide the floating debris to a collection point; (3) using a water pump to pump the floating debris into a fully enclosed floating debris collection box; (4) opening the fully enclosed floating debris collection box after balancing the negative pressure using a novel ventilation valve; (5) using an intelligent grab bucket for automatic identification, classification, and grabbing to complete the treatment of the floating debris; (6) closing the fully enclosed floating debris collection box and repeating the above steps for the next round of floating debris treatment. It incorporates visual recognition technology to modify the intelligent grab bucket to achieve automatic classification and grabbing of floating debris.

[0006] CN207779438U discloses a detection system. The device includes a load sensor installed on a drift arresting device for collecting load data, an automatic control device for data processing, and a terminal control device for monitoring. The automatic control device transmits data to the terminal control device via a transmission module. The terminal control device is also equipped with an alarm device for overload alarm. This system solves the load detection problem of mobile drift arresting devices and, combined with the wireless transmission module, fully meets the monitoring requirements of mobile drift arresting devices, avoiding damage to downstream mechanisms and preventing accidents.

[0007] The aforementioned existing technologies cannot accurately determine the water ingress situation inside the debris discharge float, thus failing to ensure the safe and stable operation of the unit. Summary of the Invention

[0008] The technical problem this invention aims to solve is as follows: Existing technologies for debris barriers cannot monitor the water ingress inside the float in real time, and when the float breaks and sinks, it cannot be detected and dealt with promptly, affecting the debris barrier's interception effect and causing prolonged unit downtime. This invention discloses an online digital monitoring device for the working status of debris barriers that is easy to install, inspect, and maintain. To achieve the above objective, this invention adopts the following technical solution.

[0009] An online digital monitoring device for the working status of a debris barrier includes: multiple debris barrier floats; a liquid level monitoring probe installed in the chamber of each float to monitor the liquid level; a data acquisition module connected to the probe via a waterproof cable to collect liquid level data; a digital converter to convert analog signals into digital signals; a controller to analyze and diagnose the liquid level data and determine whether water has entered and the debris has sunk; and a communication module to upload real-time data to a monitoring platform.

[0010] The aforementioned online digital monitoring device for the working status of a debris-blocking pontoon is characterized in that the pontoons of each debris-blocking pontoon are connected by a series wiring method, which takes into account both structural strength and ease of maintenance.

[0011] On the other hand, the present invention proposes a monitoring method using the above-mentioned online digital monitoring device for the operation of the sewage interception and discharge system, comprising: S1: Install liquid level monitoring probes in the chambers of each debris discharge float; S2: Real-time collection of liquid level data in each debris discharge float; S3: Data processing and transmission to the controller; S4: Analyze and assess the working status of the sewage interception and drainage system; S5: Trigger an alarm and record the location when an anomaly occurs.

[0012] The beneficial effects of this invention are: online real-time monitoring: by adding an online real-time monitoring function, technicians can determine whether the debris barrier is sinking by checking the liquid level in each debris barrier float fed back by the detection device.

[0013] Timely fault detection: This solves the problem of not being able to detect the sinking of the debris barrier in a timely manner. Before the renovation, if the debris barrier float was submerged and sank, it required manual visual observation, which seriously affected the safe and stable operation of the unit and the power grid.

[0014] Easy to maintain: Facilitates later maintenance and ensures long-term stable operation of the hydro-generator unit.

[0015] Reasonable structure: The pontoons are connected by a series wiring system, which balances structural strength and ease of maintenance, and ensures long-term stable operation of the system.

[0016] In this application, a liquid level sensor is added inside the debris discharge pontoon to monitor the water inflow into the pontoon and transmit the monitoring signal directly to the host computer and the central control room, ensuring the safe and stable operation of the unit. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the monitoring device described in this invention.

[0018] Figure 2 This is a side view of the debris discharge pontoon.

[0019] Figure 3 This is a schematic diagram of the connection structure of the monitoring device described in the invention.

[0020] Figure 4 A photograph of a river-blocking device with a debris-blocking pontoon in the invention.

[0021] The attached figures are labeled as follows: 1. Floating buoy for debris discharge; 2. Liquid level monitoring probe; 3. Waterproof cable; 4. Data acquisition module; 5. Digital converter; 6. Controller; 7. Communication module; 8. Monitoring platform; 9. Alarm device. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0023] like Figures 1 to 4 As shown, an online digital monitoring device for the working status of a debris-blocking blew chute is characterized by comprising multiple debris-blocking blew pontoons 1, and a liquid level monitoring probe 2 installed in the corresponding chamber of each debris-blocking blew pontoon 1. The liquid level monitoring probe 2 preferably adopts a photoelectric liquid level sensor or a pressure liquid level sensor, which has waterproof and corrosion-resistant characteristics and is suitable for long-term working environment on water. Each liquid level monitoring probe 2 is connected to a data acquisition module 4 through a waterproof cable 3. The data acquisition module 4 integrates a digital converter 5 to convert analog signals into digital signals. A controller 6 is connected to the digital converter 5. The controller 6 has a built-in AI diagnostic program for stress state, which is used to analyze the liquid level data of each debris-blocking blew pontoon 1. The controller 6 is also connected to a communication module 7, which can upload real-time data to a monitoring platform 8 and control an alarm device 9 to issue an alarm when there is an abnormality. The monitoring platform 8 can also be referred to as a host computer.

[0024] Figure 4 In each section of the debris barrier, the large pontoons are connected together, and the smaller pontoons extend out from the middle. Figure 1 The corresponding part is in the middle.

[0025] The above-described online digital monitoring device for the working status of a sewage interception system is characterized by the following working process: Initialization: Before the system starts, all liquid level monitoring probes are in normal working condition, and the debris discharge float is floating normally on the water surface; Data acquisition: The liquid level monitoring probe monitors the liquid level in the chamber of each debris discharge float in real time and transmits the signal to the data acquisition module through a waterproof cable; Signal conversion: The digital converter converts the analog signal from the liquid level monitoring probe into a digital signal and transmits it to the controller; Analysis and diagnosis: The controller's built-in AI diagnostic program analyzes the liquid level data of each float to determine the overall stress state and working condition of the debris barrier. Anomaly Handling: When the liquid level in a float reaches a preset threshold, it indicates that the float has been flooded. The controller triggers the alarm device, records the location of the faulty float, and uploads the alarm information to the monitoring platform through the communication module. Maintenance and handling: Based on the fault location information displayed on the monitoring platform, technicians promptly inspect or replace the inlet float to ensure the normal operation of the debris barrier.

[0026] In this application, the liquid level monitoring probe, also known as a liquid level sensor, works by converting the liquid level height into an electrical signal. The specific principle depends on the sensor type, and common methods include hydrostatic, buoyancy, capacitance, and optical methods. These are existing and mature technologies, and corresponding liquid level monitoring probes are readily available in the market and on various online shopping platforms. The specific model and specifications are not required in this application, as long as they can convert the liquid level height into an analog electrical signal. The digital converter that converts analog signals into digital signals described in this application is existing technology, and the finished product can be purchased on the market without any creative effort.

[0027] In this application, a preset threshold for the liquid level inside the float is set, and the collected data is compared with the preset threshold. When the preset threshold is reached, the controller triggers an alarm, records the location of the faulty float, and uploads the alarm information to the monitoring platform through the communication module. These technologies are already maturely applied in the prior art.

[0028] In this application, when the liquid level inside the pontoon exceeds a certain limit, the weight of the pontoon exceeds its buoyancy, causing the debris barrier to sink. An AI program analyzes the liquid level inside the pontoon in real time to determine if there is a risk of sinking. If a sinking risk is detected, an alarm signal is sent to the monitoring terminal to alert staff and prevent the debris barrier from sinking and losing its debris-blocking function.

[0029] In this application, image comparison can also be used. Due to the large water surface, it is difficult for a single camera to capture a complete picture. Moreover, it is necessary to use unmanned aerial vehicles to hover at high altitudes for shooting. After shooting, the images are optimized and processed, and then compared and analyzed. If obvious anomalies occur, such as a large amount of water appearing at the original location of the debris barrier pontoon, or its position being significantly lowered or differing too much from the original image, it is considered that the debris barrier pontoon is sinking or at risk of sinking, which can alert technicians to troubleshoot the fault. Of course, GPS panoramic maps can also be used, which can also conveniently obtain relevant information. However, the above methods are not ideal for cloudy, rainy, or foggy days, and are not as effective as the implementation method in the implementation examples of this application. The implementation method of this application is more stable and reliable.

[0030] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. An online digital monitoring device for the working status of a sewage interception and discharge system, characterized in that, include: The liquid level monitoring probe is installed in the corresponding chamber of each float in the debris barrier to monitor the liquid level height inside the float. The data acquisition module is connected to each liquid level monitoring probe via a waterproof cable and is used to collect liquid level data; A digital-to-digital converter is used to convert analog signals from a liquid level monitoring probe into digital signals. The controller, connected to the digital converter, is used to receive liquid level data, analyze and diagnose it, and output alarm signals. The communication module integrates wireless communication functionality and is used to upload real-time data to the monitoring platform and host computer.

2. The online digital monitoring device for the working status of a sewage interception and discharge system according to claim 1, characterized in that, The liquid level monitoring probe is a photoelectric liquid level sensor or a pressure liquid level sensor.

3. The online digital monitoring device for the working status of a sewage interception and discharge system according to claim 1, characterized in that, The various debris-blocking and drainage pontoons are connected by a series wiring method.

4. The online digital monitoring device for the working status of a sewage interception and discharge system according to claim 1, characterized in that, The controller has a built-in AI diagnostic program for stress status, which is used to analyze the liquid level data of each float and determine the overall stress status and working condition of the debris barrier.

5. The online digital monitoring device for the working status of a sewage interception and discharge system according to claim 1, characterized in that, It also includes an alarm device. When the liquid level reaches a preset threshold, the controller triggers the alarm device and records the location of the faulty debris discharge float.

6. A method for online digital monitoring of the working status of a wastewater interception and discharge system, comprising the online digital monitoring device for the working status of a wastewater interception and discharge system as described in any one of claims 1 to 5, characterized in that, The monitoring method includes the following steps: S1: Install liquid level monitoring probes in each float chamber of the debris interceptor; S2: Real-time collection of liquid level data in each float via a liquid level monitoring probe; S3: Converts the liquid level data into a digital signal via a digital converter and transmits it to the controller; S4: The controller analyzes and processes the liquid level data to determine whether the debris barrier has been submerged. S5: When the liquid level reaches the preset threshold, an alarm is triggered and the fault location is recorded. At the same time, the data is uploaded to the monitoring platform.

Images