Dynamic checking device for external water of drainage pipe network
By designing a dynamic external water inspection device for drainage pipe network, the combination of monitoring terminal, cable locator and water quality float ball, combined with traction auxiliary, the precise movement and data collection of water quality float balls in the drainage pipe are solved. There are technical problems with low accuracy in Chinese and foreign water inspections, which achieves fast and accurate positioning of external water target points and efficient identification of pollution sources.
Patent Information
- Application Number
- CN202421194909.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-29
AI Technical Summary
The prior art has low accuracy in the drainage pipeline external water inspection, and the equipment is complex and time-consuming. It is easily affected by the terrain, environment and personnel experience, making it difficult to quickly and accurately locate the external water invasion point.
A dynamic water inspection device outside the drainage pipe network was designed, including monitoring terminals, cable locators, winches and water quality floats. The precise movement and data collection of water quality floats in the drainage pipe are realized through traction auxiliary devices, combining multiple Subsampling and logical algorithm analysis to quickly locate external water target points.
It has achieved accurate reduction of suspicious points within a range of dozens of meters in a short period of time, improved inspection efficiency and accuracy, reduced equipment costs, enhanced operational convenience and automation, and able to work stably in various environments.
Smart Images
Figure CN222351804U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water detection outside a drainage network, and in particular to a device for dynamically detecting water outside a drainage network. Background Art
[0002] The drainage network is the lifeline of the city. In order to grasp the overall status of the drainage network in real time, including whether there is pipe damage, external water intrusion, whether the water quality meets the standard, etc., city managers need a highly intelligent instrument, which aims to accurately detect and quickly troubleshoot abnormal conditions such as excessive water quality and external water intrusion in the drainage network through simple equipment and advanced technical means. The instrument combines advanced technologies such as the Internet of Things, sensor technology, and data analysis to monitor and analyze the status of the drainage network. Through dynamic points, real-time water quality data, and combined with algorithm processing, it can accurately determine the external water intrusion points in the network or possible illegal drainage and leakage.
[0003] There are many methods for finding external water in the current drainage network, including terrain analysis, sniffing and observation, drainage network map analysis, actual field investigation, listening positioning, flow and liquid level method, etc. However, they all have the disadvantages of large investigation scope, large number of personnel, and are easily affected by the terrain, environment, tool reliability and personnel experience. It may take a long time to find a relatively accurate external water location.
[0004] The in-situ water quality data analysis method can only find suspected locations on the pipeline lines between the water quality sensor installation wells. There is still a long investigation line, and in many cases, due to restrictions such as road pouring, it is still impossible to accurately find the suspected location of external water.
[0005] Although the water quality inspection method using unmanned sailing vessels or pipeline robots can avoid the problems of the in-situ water quality method and can freely sample water quality along the pipeline, the propellers and tracks of the machines disturb the sludge and garbage impurities in the pipeline as they move forward, directly affecting the water quality data and creating the possibility of misleading. Utility Model Content
[0006] Aiming at the technical problem of low accuracy in checking water outside the drainage network in the prior art, the utility model proposes a dynamic checking device for water outside the drainage network; the device can be easily operated and can improve the accuracy of checking water outside the drainage network.
[0007] In order to solve the above problems, the technical solution provided by the utility model is:
[0008] A device for dynamically checking water outside a drainage network comprises: a checking and monitoring device, a water quality float and a traction assistant, wherein the checking and monitoring device comprises a monitoring terminal, a cable positioner, a winch and a cable, wherein the cable positioner and the winch are both connected to the monitoring terminal, the cable is mounted on the cable positioner and the winch, one end of the cable is connected to the monitoring terminal, and the other end of the cable is connected to the water quality float; the traction assistant comprises a float, the float is connected to one end of a rope for mounting the water quality float, and the other end of the rope is connected to the traction assistant.
[0009] Optionally, universal wheels are provided at the bottom of the inspection and monitoring device.
[0010] Optionally, the inspection and monitoring device is provided with a configuration weight and a rechargeable battery.
[0011] Optionally, the water quality float is built with one or a combination of a conductivity sensor, a COD sensor, an ammonia nitrogen sensor, a liquid level sensor and a temperature sensor.
[0012] Optionally, the water float housing is provided with a cable clip for fixing the cable, and an IP68 aviation socket for connecting the cable.
[0013] Optionally, the water float has a built-in damping balance weight.
[0014] Optionally, the sensor is fixed to the middle bottom of the sealed water float housing in a threaded or pressure strip buckle plate manner, and the sensor is connected to a PCB interface board fixed to the top plane of the water float housing, and the PCB interface board is connected to the IP68 aviation socket.
[0015] Optionally, the cable locator includes a meter counter, a tension sensor and a display, the meter counter and the tension sensor are both connected to the display, and the meter counter and the tension sensor are both connected to a monitoring terminal.
[0016] Optionally, the winch includes a winch and an electric lead screw for storing cables, the winch is connected to the electric lead screw, and the electric lead screw is connected to the monitoring terminal.
[0017] Optionally, a recessed portion is provided at the bottom of the water quality float.
[0018] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:
[0019] The present application proposes a dynamic investigation device for external water in the drainage network. It only requires two staff members and is simple to operate. It can accurately narrow down the area from a few dozen meters to individual suspected points in a short time. The water quality sampling and investigation work at each point only takes 2 to 3 minutes at the fastest. The sampler floats and moves in the upper layer of the water body of the pipe network, and the interference factor to the overall water quality sampling of the pipe network is small. The device has obvious price advantages over unmanned sailing ships and pipeline robots. Compared with the existing technology, it has the following advantages: high investigation efficiency and can quickly locate the external water target point; strong accuracy, and improves the investigation accuracy through multiple sampling and logical algorithm analysis; and efficiently identifies the external water pollution source. Through the integrated monitoring and control system, the accuracy of water quality detection and the convenience of operation can be effectively improved. The equipment has a high degree of automation, which can greatly improve the efficiency and accuracy of the investigation work. In addition, the equipment has a good protection level and adaptability, can work stably in various environments, and enhances the practicality and reliability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 The present invention is a schematic structural diagram of a device for dynamically checking water outside a drainage network proposed in an embodiment of the present invention.
[0021] Figure 2 A schematic diagram of the control structure of a device for dynamically checking water outside a drainage network proposed in an embodiment of the utility model.
[0022] Figure 3 A schematic diagram of the structure of a water quality float of a device for dynamically checking water outside a drainage network proposed in an embodiment of the utility model.
[0023] Figure 4 This is a schematic diagram of the structure of a traction aid of a device for dynamically checking water outside a drainage network proposed in an embodiment of the utility model. DETAILED DESCRIPTION
[0024] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.
[0025] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It should also be noted that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings. It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood in specific situations. Multiple technical solutions in the same embodiment, and multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions without contradiction or conflict, which are all within the scope of protection required by the present utility model.
[0026] Example 1
[0027] like Figure 1 and 2 The present embodiment proposes a device for dynamic inspection of water outside a drainage network, including: an inspection and monitoring device 1, a water quality float 2 and a traction auxiliary device 3, wherein the inspection and monitoring device 1 includes a monitoring terminal 11, a cable 14 positioner 13, a winch 12 and a cable 14, wherein the cable 14 positioner 13 and the winch 12 are both connected to the monitoring terminal 11, and the cable 14 is mounted on the cable 14 positioner 13 and the winch 12, wherein one end of the cable 14 is connected to the monitoring terminal 11, and the other end of the cable 14 is connected to the water quality float 2; the traction auxiliary device 3 includes a float, such as Figure 4 As shown, the float is connected to one end of a rope 31 for mounting the water quality float 2 , and the other end of the rope 31 is connected to the traction aid 3 .
[0028] When in use, the float is pulled from one well to another through the rope 31, and the float is picked up and connected to the traction aid 3 at the other well. The rope 31 is located in the drainage pipe between the two wells. The water quality float 2 is mounted on the rope 31, and the water quality float 2 is connected to the cable 14, and floats and moves along the rope 31 in the drainage pipe between the two wells. The water quality float 2 collects the water quality data in the drainage pipe and transmits it back to the monitoring terminal 11 through the cable 14. The monitoring terminal 11 then determines the sampling point of the water quality float 2 according to the moving distance and position of the water quality float 2, and the water quality sampling data of the water quality float 2 and the sampling point of the water quality float 2 are matched one by one, so as to accurately locate the abnormal point of the water quality data, and then facilitate the accurate positioning of the external water discharge position. The accuracy of water quality collection is determined by the sampling accuracy of the water quality float 2. The frequency of water quality collection of the water quality float 2 can also be set and controlled by the monitoring terminal 11, or the collection accuracy can be determined according to the moving distance of the water quality float 2, such as collecting water quality data every 50 cm or 100 cm. The winch 12 is used to fix the cable 14, and the cable 14 positioner 13 is used to position the cable 14. Both are controlled by the monitoring terminal 11, thereby controlling the moving speed of the cable 14 and the water quality float 2 in the drain pipe, and then calculating the position of the water quality float 2 in the drain pipe, and accurately locating the sampling position of the water quality float 2. If there is an abnormal point in the sampled water quality data, the external water inflow position can be determined, thereby achieving high-precision external water dynamic investigation.
[0029] The bottom of the inspection and monitoring device 1 is provided with a universal wheel 16, and a configuration weight and a rechargeable battery are provided inside the inspection and monitoring device 1; the universal wheel 16 is silent and flexible, and has the basic functions of braking, leveling, high load bearing, and strong tensile bearing. When the movable inspection and monitoring device 1 is ready to work, it can support the fixed foot with high friction after braking, and after completing the leveling, with the cooperation of the backup battery and the counterweight device 15, it can ensure that the entire device will not fall over due to the lateral pulling force generated when the winch 12 is retracted and released.
[0030] like Figure 3 As shown, the water quality float 2 is built with one or more combinations of conductivity sensor 25, COD sensor 22, ammonia nitrogen sensor, liquid level sensor 27 and temperature sensor 21. The outer shell of the water quality float 2 is provided with a cable buckle 24 for fixing the cable 14, and an IP68 aviation socket 23 for connecting the cable 14; the water quality float 2 is built with a damping balance weight 26. The sensor is fixed to the middle bottom of the sealed water quality float 2 outer shell in a threaded or pressure strip buckle plate manner, and a recess is provided at the bottom of the water quality float 2. The sensor is connected to a PCB interface board fixed to the top plane position of the outer shell of the water quality float 2, and the PCB interface board is connected to the IP68 aviation socket 23.
[0031] The cable 14 locator 13 includes a meter, a tension sensor and a display, the meter and the tension sensor are connected to the display, and the meter and the tension sensor are connected to the monitoring terminal 11. The meter is used to calculate the retracted length of the cable 14, so as to locate the position of the water quality float 2 in the drainage pipe, and the tension sensor controls the tension of the cable 14.
[0032] The winch 12 includes a winch and an electric lead screw for storing the cable 14 . The winch is connected to the electric lead screw, which is connected to the monitoring terminal 11 . The monitoring terminal 11 controls the movement of the electric lead screw and the rotation state of the winch, thereby realizing the retraction and release of the cable 14 .
[0033] Example 2
[0034] This embodiment proposes a dynamic inspection and monitoring device 1 for water outside a drainage network, which is composed of a movable inspection and monitoring device 1, a self-balancing water quality float 2, and a traction auxiliary device 3 for inspection.
[0035] The inspection and monitoring device 1 is composed of a low-power monitoring terminal 11, a high-precision cable 14 positioner 13, an electric self-arranging cable winch 12, a zero-buoyancy multi-bus umbilical cable 14, a universal wheel 16 with adjustable load, a backup battery and a counterweight, etc. It is 65 in length and 40 in width, and the main body is made of stainless steel.
[0036] The low-power monitoring terminal 11 has the functions of communication transmission, sensor power supply collection, winch 12 control, data edge computing, troubleshooting and decision-making, etc. It has low power consumption and long battery life, and also supports external power supply and IP68 protection.
[0037] The monitoring terminal 11 is respectively connected to the high-precision cable 14 positioner 13 and the electric self-arranging wire winch 12 by wire, and is connected to the water quality float 2 through the cable 14 to realize the communication and sampling functions of various sensors used to detect water quality data.
[0038] The monitoring terminal 11 automatically calculates and determines the distance value of the inspection point based on the straight-line distance and spacing value of the two upstream and downstream wells input by the inspection personnel. It can form equidistant inspection points, or increase the input of specific distance inspection points as the basis for controlling the winch 12 to retract and release the line and the water quality sampling points.
[0039] The monitoring terminal 11 will control the winch 12 to place the cable 14 of appropriate length according to the predetermined inspection point distance, so that the water quality float 2 can reach the planned point and perform data sampling. Through the historical average and historical values of the water quality of the current inspection pipe network, the water quality value of the starting position and other data, combined with the external water inspection logic algorithm, it can autonomously analyze whether it is the external water target point. When a suspicious point appears, the terminal can autonomously resample the data multiple times, or control the winch 12 to retract the line and re-sample the previous point to confirm the data. It can also autonomously change the inspection point and encrypt the subsequent inspection points for sampling to improve the accuracy and efficiency of the inspection.
[0040] The high-precision cable 14 tension positioner integrates a high-precision meter and tension sensor to accurately measure the length of the cable 14 that is retracted and released by the winch 12, and the tension of the cable 14 during the retraction and release process, and transmits it to the monitoring terminal 11 to accurately control the power on and off of the winch 12. At the same time, the total line release distance, the current line release distance, and the current cable 14 tension can be displayed on the LED display screen, allowing the inspection personnel to confirm the inspection process and progress in real time. When the tension value is too small, it may be that the water quality float 2 is blocked and stops moving forward, or when the tension value is too large when retracting, it means that the water quality float 2 may be restricted in retreat. When the last situation occurs, the buzzer on the display screen will appear to remind the user.
[0041] The electric self-arranging winch 12 realizes 12VDC power drive control, and controls the lateral position of the retractable line through the electric lead screw, ensuring that the cable 14 can be retracted and released into the winch in a flat and orderly manner, avoiding the chaos of reeling and releasing the line. At the same time, it supports the button triggering 3 to 5cm manual retractable line function, and long pressing a certain direction key for 3 seconds can continuously retract and release the cable 14. When the retractable line of the winch 12 is too tight or too loose, a prompt sound will be automatically generated.
[0042] The zero-buoyancy multi-bus umbilical cable 14 is customized by a high-quality cable 14 manufacturer as an umbilical communication cable with zero buoyancy, multi-channel bus, and effective signal interference shielding. The monitoring terminal 11 as the host can be connected to multiple sensors in the water quality float 2 by a navigation plug, and the water quality float 2 will not be sunk due to the length and weight of the cable 14, disturbing the silt and garbage in the drainage network and affecting the data sampling of water quality sensors, thereby achieving the technical effect of in-situ sampling.
[0043] The universal wheel 16 with adjustable load is a universal wheel 16 tailor-made for the inspection and monitoring device 1. It is silent, flexible, and has the basic functions of braking, leveling, high load bearing, and strong tensile bearing. When the inspection and monitoring device 1 is ready to work, it can support the fixed feet with high friction after braking. After leveling, with the cooperation of the backup battery and the counterweight device 15, it can ensure that the entire device will not fall over due to the lateral pulling force generated by the winch 12 when the winch 12 is retracted and released.
[0044] The spare battery and counterweight are used to stabilize the center of gravity of the inspection and monitoring device 1 and increase the stability of the device when it is pulled. It is easy to disassemble and can be equipped with a 12V high-performance rechargeable battery. When long-term monitoring and inspection is required, the battery capacity and weight can be adjusted according to actual needs.
[0045] The self-balancing water quality float 2 is made of PVC, has a diameter of 30CM, and is IP68 protected. It has built-in sensors for conductivity, COD or ammonia nitrogen (one of the two), liquid level, temperature, etc., and a damping balance weight 26 in the water. The front end can be fastened with an ordinary cable buckle 24, and the rear end has an IP68 aviation socket 23 for connecting the cable 14.
[0046] The sensor is fixed to the middle bottom of the sealed water quality float ball shell by threaded and pressure strip buckle plate. All sensors are connected to the PCB interface board at the top plane position of the fixed float shell through RS485. The PCB interface board is connected to the aviation socket to receive power supply and communication from the monitoring terminal 11.
[0047] The damping balance weight 26 is suspended and fixed on the water quality float 2 just above the weight limit ring, with a horizontal 360-degree swing space, which can reduce the swing amplitude of the water quality float 2 in the pipeline and the possibility of overturning due to a large water potential drop. It can also balance the weight of the sensor and the shell of the water quality float 2 to ensure a semi-floating state. There is a slight depression at the bottom of the water quality float 2 to ensure that the sensor can contact the water body and will not be damaged by the low water level.
[0048] The traction aid 3 used for inspection has a PVC float (8cm in diameter), and the rope 31 can be made of plastic nylon rope (white, up to 100 meters), or Kevlar braided line (No. 0, 8 strands, up to 100 meters). It also includes 2 manual and automatic lightweight winches 32, and the float, rope 31, and winch 32 are connected in sequence. The traction aid 3 can be manually retracted and released, or a 3.6V19AH high-performance lithium battery can be placed in the battery position to achieve automatic retraction and release. Its function is to allow the float device to move forward steadily. The staff ensures that the float reaches each inspection point accurately through the pulling effect of the retracted and released line, and quickly escapes when encountering pipeline corners or obstacles.
[0049] In addition, the operation and use method of a device for dynamically checking water outside a drainage network proposed in this embodiment includes:
[0050] Set up the line 31 of the traction auxiliary device 3: The investigation staff finds a suitable fixed position near the upstream well and stops and fixes the investigation monitoring device 1. One staff member uses the manual and automatic traction auxiliary device 3 to manually or automatically release the line with a battery, and lowers the float in the investigation traction auxiliary device 3. After the PVC float flows along the pipe network water to the downstream well, another staff member uses an integrated pole scoop net and other tools to wait at the pipeline outlet of the downstream well until the float is found and picked up, and then another manual and automatic lightweight winch 32 fixed to the traction auxiliary device 3 is reeled in.
[0051] When the rope 31 has passed through the two wells upstream and downstream, the rope is quickly reeled in until the rope 31 passes through the two wells, completing the work of investigating and setting up the guide rope 31. At this point, the Kevlar braided wire serves as the guiding and traction force rope in this investigation work link, and at the same time, the upstream well personnel are notified that they can prepare for the investigation work.
[0052] Preparation: At the upstream wellhead, the inspection staff hangs the water quality float 2 on the tail end of the rope 31 (i.e., Kevlar braided line), and plugs the other end into the cable 14. The winch 12 of the inspection monitoring device 1 slowly releases the line, allowing the water quality float 2 to float freely on the surface of the upstream well. The positioner is calibrated to 0, and the sampling value of the water quality float 2 is checked and compared with the measured value of the handheld water quality meter, or the value of the in-situ water quality sensor installed on site. If the value is the same or within the error range, it means that the current device is normal, and the currently sampled water quality data is used as the reference value for inspection. If you encounter data with excessive deviation, you can recalibrate the water quality sensor and try not to use it as the reference value for inspection, which will reduce the accuracy of the inspection.
[0053] Input the straight-line distance between the two wells to be checked and the distance between the checkpoints. The monitoring terminal 11 automatically calculates and determines the distance position of the checkpoints, which can form equidistant checkpoints, or add the approximate distance value of the suspected point from the current checkpoint as a specific checkpoint, or a random distance value as a checkpoint. Through the above three methods, the checkpoints can be determined individually or in combination, which can serve as the basis for the cable 14 locator 13 and the winch 12 to retract and release the line. The sensor detection equipment at the checkpoint - the water quality float 2 is movable, and there is no need to install too many sensor detection equipment at fixed points in the drainage network, saving costs. The determined inspection points here are the point distance values for preparing the reeling and releasing lines for subsequent inspection work. For example, the distance between two wells is 50 meters. A point of 10 meters is used as an inspection point. In addition to the 0-meter position, there are 5 points of 10, 20, 30, 40, and 50 meters. It is necessary to place the corresponding cables 14 at a distance to allow the water quality float 2 to stop at the above-mentioned points and take samples. Therefore, the points are determined in advance, which is the value of the subsequent monitoring terminal 11 controlling the line-releasing distance of the winch 12.
[0054] The detection process of the water quality float 2 can be realized intelligently and automatically: according to the retraction and release speed and pause time of the rope, the water quality data is detected in real time and transmitted to the monitoring terminal 11 in real time, forming nearly continuous water quality detection data at the distance between the two wells. The distance accuracy of the detection point depends on the sampling accuracy of the water quality float 2, the interval time between two adjacent water quality detections, and the retraction and release speed of the rope (the moving speed of the water quality float 2) and the pause time.
[0055] At present, the water quality float 2 is designed to be fully automatic by default, that is, when the winch 12 releases the cable 14 of the distance value of the next point to let the float flow to the next predetermined inspection point, it quickly sends instructions to the float to complete the sampling, and then starts the winch 12 to release the line to the next point, or retracts the line to the previous point or surrounding points when encountering data anomalies. The accuracy of the inspection is related to the time synchronization of water quality sampling. The fewer the sampling intervals at each point, the faster the sampling of the entire process is completed, and the higher the inspection accuracy.
[0056] Investigation and testing work: After the preparation work is completed at the upstream well, click on the investigation start work through the computer or mobile phone connected to the monitoring terminal 11. The monitoring terminal 11 automatically releases the cable 14 at a specified distance and pauses according to the self-set investigation point and distance value, and the monitoring terminal 11 automatically completes the reading of the water quality float 2 data value. After the winch 12 is automatically started again to release the line to the next investigation point, the downstream well can cooperate with manual or automatic reeling and releasing, gently pull the rope 31, and after confirming that the water quality float 2 is ready to reach the predetermined position, the monitoring terminal 11 continues to automatically complete the data reading; and so on, the investigation and sampling work is carried out.
[0057] The data uploaded by the monitoring terminal 11 is analyzed and judged in real time. If an obvious problem point is encountered, the winch 12 can be warned to retreat and re-confirm or automatically encrypt the surrounding and subsequent monitoring points to continue to complete the subsequent investigation work.
[0058] During the inspection process, there may be obstacles in the drainage network, misconnections or stolen drainage pipes, etc., which may prevent the water quality float 2 from floating smoothly. The cable 14 locator 13 reads the tension value in real time. If it is too small or too large, the buzzer will remind the user that the current floating body is abnormal. At this time, the staff of the upstream and downstream wells can manually or automatically reel in and release the line to cooperate and pull, pull and release, etc., so that the water quality float 2 can escape and float downstream through actions such as retreating and moving forward, and complete the inspection of subsequent points.
[0059] Final inspection and testing: When the water quality float 2 reaches the downstream well to complete the inspection process, the upstream well staff presses the winch 12 reel key on the inspection and monitoring device 1 for 3 seconds to automatically reverse the winch and recycle the umbilical cable 14 in an orderly manner to complete the entire inspection. If the float device is directly recovered, it may be stuck in a corner of the pipe network. The water quality float 2 can be extracted and removed by the auxiliary device, and then the winch 12 of the inspection control device can automatically recycle all the umbilical cables 14.
[0060] Description of the screening method: The data monitoring platform detects changes in water quality data values at screening points compared to baseline values, and uses a screening algorithm to find external water through water quality to determine which screening points are likely to have external water.
[0061] For example, conductivity data. If there is no external water intrusion or illegal discharge or leakage, and the water quality in the drainage network remains relatively stable, then the conductivity data should remain relatively stable or show a slightly downward trend. The main reason is that conductivity is affected by the ion concentration in the water, and in a normal drainage network system, ions may gradually decrease due to adsorption, precipitation or other chemical changes.
[0062] Therefore, if the conductivity value of a certain inspection point is one threshold higher than that of the previous one or two upstream points or the benchmark value, it can be suspected that salt water or industrial wastewater has entered the vicinity of the current point. When the conductivity of the inspection point is significantly lower than that of the upstream point, it may be due to misconnection of the rainwater pipe network or intrusion of river water and groundwater.
[0063] Similarly, an increase in ammonia nitrogen or COD may indicate the entry of domestic sewage or organic pollution, while a decrease may be caused by the intrusion of groundwater, rainwater, river water, etc. During the investigation process, the investigation instrument is used for precise measurement. The platform will also automatically compare the real-time data group, combine the two water quality parameters such as liquid level and water temperature, and collect data in real time in the same place for horizontal comparison. Through the cross-synchronization of water quality, it can intelligently judge the presence of obvious abnormal data, and promptly warn the investigation personnel of suspected points. They can retreat and re-collect or encrypt the investigation points to remove interference as much as possible. Finally, from the investigation range of tens of meters, the specific location and direction of external water intrusion or leakage can be locked down with accuracy to the meter level.
[0064] Based on the problem points found by the inspection instrument, and referring to the surrounding environment near this point, the basic information analysis of the drainage network's terrain, pipelines, wellhead layout, etc., personnel can be further arranged to use professional technologies and tools (such as leak detection robots, leak detection rods, etc.) to conduct more detailed inspections on suspected points in the drainage network, and ultimately find the source of pipeline damage, external water entry points, or illegal discharge and leakage.
[0065] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.
Claims
1. A device for dynamically checking water outside a drainage network, characterized in that: include: Inspection and monitoring device, water quality float and traction aid, the inspection and monitoring device includes a monitoring terminal, a cable positioner, a winch and a cable, the cable positioner and the winch are both connected to the monitoring terminal, the cable is installed on the cable positioner and the winch, one end of the cable is connected to the monitoring terminal, and the other end of the cable is connected to the water quality float; the traction aid includes a float, the float is connected to one end of a rope for mounting the water quality float, and the other end of the rope is connected to the traction aid.
2. A device for dynamically checking water outside a drainage network according to claim 1, characterized in that: The bottom of the inspection and monitoring device is provided with universal wheels.
3. A device for dynamically checking water outside a drainage network according to claim 1, characterized in that: The inspection and monitoring device is provided with a configuration weight block and a rechargeable battery.
4. A device for dynamically checking water outside a drainage network according to claim 1, characterized in that: The water quality float is built with one or a combination of conductivity sensors, COD sensors, ammonia nitrogen sensors, liquid level sensors and temperature sensors.
5. A device for dynamically checking water outside a drainage network according to claim 4, characterized in that: The water quality float shell is provided with a cable clip for fixing the cable and an IP68 aviation socket for connecting the cable.
6. A device for dynamically checking water outside a drainage network according to claim 1, characterized in that: The water float is internally provided with a damping balancing weight.
7. A device for dynamically checking water outside a drainage network according to claim 5, characterized in that: The sensor is fixed to the middle bottom of the sealed water float housing in a threaded or pressure strip buckle plate manner. The sensor is connected to a PCB interface board fixed to the top plane position of the water float housing, and the PCB interface board is connected to an IP68 aviation socket.
8. A device for dynamically checking water outside a drainage network according to claim 1, characterized in that: The cable locator comprises a meter counter, a tension sensor and a display, wherein the meter counter and the tension sensor are both connected to the display, and the meter counter and the tension sensor are both connected to a monitoring terminal.
9. A device for dynamically checking water outside a drainage network according to claim 1, characterized in that: The winch comprises a winch for storing cables and an electric lead screw, the winch is connected to the electric lead screw, and the electric lead screw is connected to a monitoring terminal.
10. A device for dynamically checking water outside a drainage network according to any one of claims 1 to 9, characterized in that: A recessed portion is provided at the bottom of the water quality float.