Aluminum electrolysis rectifier cabinet water leakage alarm control system

Abstract

This invention relates to the field of rectifier cabinet technology and discloses a water leakage alarm control system for aluminum electrolysis rectifier cabinets. The system includes: a water leakage sensing unit comprising a water leakage detection board disposed at the bottom of the rectifier cabinet, with a sensor on the board that detects whether water leakage has occurred at the bottom of the rectifier cabinet; an image acquisition unit, wherein a camera captures images of the rectifier cabinet floor, and a light above the rectifier cabinet illuminates the floor; the image acquisition unit first acquires images and determines whether water leakage has occurred by checking for bright spots in the images, calculating the leakage area if any are found; an alarm unit comprising a controller and alarm indicator lights, the controller classifying information according to thresholds and issuing different levels of alarms; and a communication unit that transmits information from the water leakage sensing unit and the image acquisition unit to the controller and a remote control terminal. This invention can promptly detect water leakage defects in rectifier cabinets and issue an alarm.

Description

Technical Field

[0001] This invention relates to a water leakage alarm control system for an aluminum electrolysis rectifier cabinet, belonging to the field of rectifier cabinet technology. Background Technology

[0002] In the power workshop of an aluminum electrolysis plant, rectifier cabinets are used as water cooling devices. During daily operation, leaks are prone to occur due to temperature variations or aging of pipe components. If not detected promptly, this can easily lead to component breakdown or short circuits, seriously threatening the safe operation of the rectifier cabinets and the stability of the power supply to the electrolytic system. Currently available leak alarm methods and monitoring devices are relatively simple. When dripping or large-area leaks occur, a blanket power outage is used followed by troubleshooting, which disrupts production and significantly reduces efficiency. Therefore, a leak alarm and control system for aluminum electrolysis rectifier cabinets that can monitor different leak conditions and respond accordingly is needed. Summary of the Invention

[0003] To address the aforementioned deficiencies in existing technologies, this invention proposes a water leakage alarm and control system for aluminum electrolysis rectifier cabinets.

[0004] The present invention discloses a water leakage alarm control system for an aluminum electrolysis rectifier cabinet, comprising a water leakage sensing unit, an image acquisition unit, an alarm unit, and a communication unit, wherein:

[0005] The water leakage sensing unit includes a water leakage detection board, which is located at the bottom of the rectifier cabinet. The water leakage detection board is equipped with a sensor that detects whether water leakage has occurred at the bottom of the rectifier cabinet.

[0006] The image acquisition unit includes a camera installed above the rectifier cabinet. The camera captures images of the floor of the rectifier cabinet. A light is installed above the rectifier cabinet to illuminate the floor of the rectifier cabinet. The image acquisition unit first acquires images and then determines whether there is a water leak by checking for bright spots on the images. If there is a leak, the leak area is calculated.

[0007] The alarm unit includes a controller and an alarm indicator light. The controller receives information from the water leakage sensing unit and the image acquisition unit, classifies the information according to the threshold, and issues alarms of different levels. It also sends text alarm information to the remote control terminal through the alarm indicator light.

[0008] The communication unit sends information from the water leakage sensing unit and the image acquisition unit to the controller and the remote control terminal.

[0009] Preferably, the sensors in the leakage sensing unit include a water immersion sensor and a water level sensor, which respectively detect whether there is water leakage at the bottom of the rectifier cabinet and the water level information.

[0010] Preferably, the water leakage sensing unit uses 12V low voltage.

[0011] Preferably, the formula for calculating the leakage area in the image acquisition unit is:

[0012] S=2dL×tanα / 2

[0013] Where α is the lateral field of view of the camera, d is the distance from the camera to the ground, and L is the lateral field of view range of the camera.

[0014] Preferably, the situation classification in the alarm unit includes determining whether a water leak has occurred based on the presence of bright spots on the water immersion sensor and the image, and issuing different levels of alarms based on the water level sensor and the area of ​​the leak if a water leak is detected.

[0015] Preferably, the different levels of alarms include the following:

[0016] Level 1: If the controller determines that there is only a dripping water problem in the rectifier cabinet based on the received information, the alarm indicator light will light up, and the controller will send an alarm message to the remote control terminal. Staff will need to go to the site to find and deal with the dripping water problem.

[0017] Level 2: If the controller determines that there is a large-scale water leak in the rectifier cabinet and water accumulation on the ground based on the received information, the alarm indicator light will light up, the controller will cut off the power supply to the rectifier cabinet, and the controller will send an alarm message to the remote control terminal. Staff must go to the site immediately to handle the situation.

[0018] Preferably, the remote control terminal includes one or more of a mobile phone, computer, and tablet computer.

[0019] The aluminum electrolysis rectifier cabinet water leakage alarm control system described in this invention has the following beneficial effects:

[0020] (1) It can detect water leakage defects in rectifier cabinets in a timely manner, monitor water leakage in equipment areas, and issue different levels of alarms according to different water leakage conditions;

[0021] (2) It is highly responsive and provides accurate and reliable output;

[0022] (3) Easy to install and high space utilization;

[0023] (4) It has a fast alarm, strong performance and is easy to use. Attached Figure Description

[0024] Figure 1 This is a structural block diagram of the present invention.

[0025] Figure 2 This is a circuit diagram of the water leakage sensing unit. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example:

[0028] like Figures 1 to 2 As shown, the aluminum electrolysis rectifier cabinet water leakage alarm control system of the present invention includes a water leakage sensing unit, an image acquisition unit, an alarm unit, and a communication unit, wherein:

[0029] The water leakage sensing unit includes a water leakage detection board located at the bottom of the rectifier cabinet. The board is equipped with sensors, including a water immersion sensor and a water level sensor. These sensors detect whether there is a leak at the bottom of the rectifier cabinet and the water level, respectively. The water leakage sensing unit uses 12V low-voltage electricity for enhanced safety. When there is no water droplet on the detection board, the voltage value at the non-inverting terminal INB+ of the leakage detection circuit is greater than the voltage value at the inverting terminal INA-. The dual voltage comparator outputs a high level, the relay KA does not activate, and the alarm indicator light is off, indicating no leakage. When water droplets flow across the electrodes of the detection board, the voltage value at the non-inverting terminal INB+ will be less than the voltage value at the inverting terminal INA-. The dual voltage comparator outputs a low level, the relay KA is energized, and the alarm indicator light illuminates, alerting the rectifier cabinet to a water leak that requires immediate investigation and handling. The comparator used in this system has a clean output signal, good waveform, and strong driving capability, enabling accurate and sensitive detection of water droplets on the leakage detection board. The system will immediately issue an alarm signal if water leakage occurs in the rectifier cabinet, so that we can deal with it in a timely manner.

[0030] The image acquisition unit includes a camera positioned above the rectifier cabinet. The camera captures images of the rectifier cabinet floor. A spotlight is positioned above the rectifier cabinet, illuminating the floor. The image acquisition unit first captures images and then checks for bright spots in the images to determine if a leak has occurred. If a leak is found, the leak area is calculated. The formula for calculating the leak area in the image acquisition unit is:

[0031] S=2dL×tanα / 2

[0032] Where α is the lateral field of view of the camera, d is the distance from the camera to the ground, and L is the lateral field of view range of the camera.

[0033] The alarm unit includes a controller and alarm indicator lights. The controller receives information from the water leakage sensing unit and the image acquisition unit, classifies the information according to thresholds, and issues different levels of alarms. It also sends text alarm messages to the remote control terminal via the alarm indicator lights. The alarm unit classifies situations based on the presence of bright spots in the water immersion sensor and image. If a leak is detected, different levels of alarms are issued based on the water level sensor and the leak area. These different alarm levels are as follows:

[0034] Level 1: If the controller determines that there is only a dripping water problem in the rectifier cabinet based on the received information, the alarm indicator light will light up, and the controller will send an alarm message to the remote control terminal. Staff will need to go to the site to find and deal with the dripping water problem.

[0035] Level 2: If the controller determines that there is a large-scale water leak in the rectifier cabinet and water accumulation on the ground based on the received information, the alarm indicator light will light up, the controller will cut off the power supply to the rectifier cabinet, and the controller will send an alarm message to the remote control terminal. Staff must go to the site immediately to handle the situation.

[0036] The communication unit sends information from the water leakage sensing unit and the image acquisition unit to the controller and the remote control terminal, which includes one or more of mobile phones, computers, and tablets.

[0037] This invention can be widely used in rectifier cabinet applications.

Claims

1. A water leakage alarm control system for an aluminum electrolysis rectifier cabinet, characterized in that, It includes a water leakage detection unit, an image acquisition unit, an alarm unit, and a communication unit, wherein: The water leakage sensing unit includes a water leakage detection board, which is located at the bottom of the rectifier cabinet. The water leakage detection board is equipped with a sensor that detects whether water leakage has occurred at the bottom of the rectifier cabinet. The image acquisition unit includes a camera installed above the rectifier cabinet. The camera captures images of the floor of the rectifier cabinet. A light is installed above the rectifier cabinet to illuminate the floor of the rectifier cabinet. The image acquisition unit first acquires images and then determines whether there is a water leak by checking for bright spots on the images. If there is a leak, the leak area is calculated. The alarm unit includes a controller and an alarm indicator light. The controller receives information from the water leakage sensing unit and the image acquisition unit, classifies the information according to the threshold, and issues alarms of different levels. It also sends text alarm information to the remote control terminal through the alarm indicator light. The communication unit sends information from the water leakage sensing unit and the image acquisition unit to the controller and the remote control terminal. The sensors in the leakage sensing unit include a water immersion sensor and a water level sensor, which respectively detect whether there is water leakage at the bottom of the rectifier cabinet and the water level information. The alarm unit's situation classification includes determining whether a water leak has occurred based on the presence of bright spots on the water immersion sensor and image. If a water leak is detected, different levels of alarms are triggered based on the water level sensor and the area of ​​the leak. The different alarm levels include the following: Level 1: If the controller determines that there is only a dripping water problem in the rectifier cabinet based on the received information, the alarm indicator light will light up, and the controller will send an alarm message to the remote control terminal. Staff will need to go to the site to find and deal with the dripping water problem. Level 2: If the controller determines that there is a large-scale water leak in the rectifier cabinet and water accumulation on the ground based on the received information, the alarm indicator light will light up, the controller will cut off the power supply to the rectifier cabinet, and the controller will send an alarm message to the remote control terminal. Staff must go to the site immediately to handle the situation.

2. The aluminum electrolysis rectifier cabinet water leakage alarm control system according to claim 1, characterized in that, The water leakage sensing unit uses 12V low voltage.

3. The aluminum electrolysis rectifier cabinet water leakage alarm control system according to claim 1, characterized in that, The formula for calculating the leakage area in the image acquisition unit is: S = 2dL × tanα / 2 Where α is the lateral field of view of the camera, d is the distance from the camera to the ground, and L is the lateral field of view range of the camera.

4. The aluminum electrolysis rectifier cabinet water leakage alarm control system according to claim 1, characterized in that, The remote control terminal includes one or more of mobile phones, computers, and tablets.

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