423 results about "Urban water supply" patented technology

The invention discloses an intelligent in-pipe detection ball device for leakage locating of an urban water supply network and a method. The device comprises a sound detection module, an amplifying and filtering module, an analog-digital conversion module, a pressure measurement module, a vibration measurement module, an inertial navigation module, a single-chip microcomputer, an RFID reader, a storage module and a power module. The detection ball device is put into a water supply pipeline and rolls along the inner wall of the pipeline under pushing of water flow; by means of a sound sensor, a pressure sensor and a vibration sensor in the device, whether leakage happens to the water supply pipeline or not is detected based on a multisensor fusion method; and a leakage point is precisely located through the inertial navigation and RFID combination locating manner, and detected leakage information is transmitted to an upper computer through the RFID technology in a wireless manner to be further analyzed and processed. According to the intelligent in-pipe detection ball device and the method, leakage detection and locating can be carried out in the water supply pipeline, and the reliability and accuracy of leakage detection of the water supply network are effectively improved.

The invention discloses a leakage detection method based on hydraulic model calibration of an urban water supply network. The method comprises the following steps: A) establishing a pressure-related leakage positioning model; B) determining a leakage detection target function; C) determining a constraint condition; and D) solving the pressure-related leakage positioning model. Urban water supply pipeline leakage is avoided, problems in a traditional leakage detection method are solved, the pressure-related leakage detection model is established on the basis of model calibration by a Cuckoo optimization algorithm, and the leakage detection method is quick and effective. In addition, a new pressure-related leakage detection method can detect leakage which is difficult to detect by a traditional method. A situation that a leakage area is detected before the engineers go to a scene is very useful for engineers, and the engineers can carry out intensive examination in a predicted area and can quickly detect an accurate position of a leakage hot water spot.

The invention relates to a processing method and a processing device for providing auxiliary dispatching data of a water supply network. The processing device is characterized by comprising a supervisory control and data acquisition (SCADA) system, a water supply network hydraulic simulation model processor, a water supply network water quantity prediction model processor, a supplementary measurement pressure data recorder, and an auxiliary dispatching decision processor, wherein the auxiliary dispatching decision processor is connected with the SCADA system, the water supply network hydraulic simulation model processor, the water supply network water prediction model processor, and the supplementary measurement pressure data recorder respectively. Compared with the prior art, the processing method and the processing device have the advantages of providing an effective path for safe and reliable dispatching, energy-saving and optimized dispatching, intellectualized and informationalized scientific dispatching of the urban water supply network, and the like.

The invention belongs to the field of a prediction method of the urban water supply network tube explosion, and provides a novel urban water supply network tube explosion prediction method to solve the problem that the prediction precision is low and establish a tube explosion prediction model so as to provide novel study basis for urban water supply network tube explosion. Therefore, according to the technical scheme, the urban water supply network tube explosion prediction method comprises the following steps of: (1) acquiring the tube explosion rate of a tested water supply network and historical data of other relevant affect factors which affect the tube explosion rate, and taking the tube explosion rate and the historical data as the detected data; (2) establishing a water supply network tube explosion prediction model of a self-adaptive neural network heterozygosis variable precision rough set; (3) carrying out training and test analysis on the water supply network tube explosion prediction model; and (4) predicting the tube explosion rate of the water supply network by using the water supply network tube explosion prediction model which passes the test. The method is mainly applied to prediction on the urban water supply network tube explosion.

The invention discloses an embedded energy data acquisition unit, which comprises a main board and a shell, wherein a central processing unit (CPU), a data acquisition module which is connected with the input/output (I/O) interface of the CPU and a wireless functional plug-in are embedded into the main board; the CPU is an embedded processor which is based on a WinCE operating system, supports anOLE for process control (OPC)-service data specification and a real-time database, is solidified with a data acquisition communication protocol, directly acquires energy data through the data acquisition module, and acquires information data in a terminal instrument and field equipment for displaying and storing; the shell is connected with a human-computer interface display, and is provided witha human-computer interface input unit interface which is connected with the CPU and is used for writing working parameters or inputting operation commands; and through an Ethernet port for connectinga communication network with a monitoring station, a storage equipment interface, an input/output interface and a power supply interface can be expanded. The data acquisition unit is suitable for data acquisition and monitoring of places where mains supply is difficult to reach such as forecasting of hydrology, real-time monitoring of water resources, monitoring of irrigated areas, environmental monitoring, pollution monitoring, urban water supply, monitoring of pipe networks and the like.

The present invention relates to safety monitoring system, and is flexibility monitoring method for large span bridge structure. Whole bridge pressure field is first established with water tanks set in the unchanged location, water pipes set horizontally and city water supply system to lead water pressure to deformation location of the bridge; and the pressure transducer is fixed to the measured part. The pressure change is converted into flexibility change and monitored with the computerized monitoring system, which consists of water tank, water pipes, pressure transducer, A/D converter, computer, etc. The present invention has high measurement stability, great measurement range, low measurement cost and high practical value.

The invention discloses an optimized layout method for pressure monitoring points of an urban water supply pipe network. The method comprises the steps that S1, basic data of the urban water supply pipe network is acquired, EPANETH software is utilized to calculate hydraulic adjustment of the water supply pipe network, and a hydraulic model of the urban water supply pipe network is constructed; S2, a pressure difference matrix, a shortest distance matrix and a water volume influence fuzzy similar matrix are solved according to the hydraulic model of the urban water supply pipe network, and constraint conditions of an optimized layout model of the pressure monitoring points of the urban water supply pipe network are determined; S3, a model objective function is determined, and the optimized layout model of the pressure monitoring points of the urban water supply pipe network is constructed; and S4, a particle swarm algorithm is utilized to solve the optimized layout model of the pressure monitoring points of the urban water supply pipe network, and an optimal pressure monitoring point and monitoring areas of all the pressure monitoring points are determined. The method has the advantages of being simple in principle, easy to realize and high in efficiency and meets the requirements for representativeness, comparability and feasibility of point distribution.

The invention provides a method for predicting and analyzing pipe burst of an urban water supply network. The method comprises the following steps: establishing a pipe burst database of the urban water supply network in a geographic information system; selecting and setting the parameters stored in the pipe burst database of the urban water supply network so as to obtain the set parameters; according to the set parameters, calling a dynamic data analysis software link database to establish a prediction model for pipe bursts under a secondary development and obtaining the predicted outcome of each pipe by means of the pipe burst prediction model; grading the predicted outcomes and setting attributions of pipe burst risks; according to different attributes of pipe burst risks, giving the pipes different colors by adopting value classification and difference displaying modes to establish a district thematic map for pipe burst risks. By using the method, a visualized display effect of the predicted pipe burst can be given, therefore, the method is quite practical and easy to use.

The invention discloses an optimized arrangement method for monitoring points of an urban water supply pipe network. The invention improves the traditional sensitivity analysis and cluster analysis methods separately and combines the two methods to obtain optimized distribution of monitoring points, so that the arrangement of the monitoring points can have the characteristics of being good in sensitivity, being relatively dispersed and facilitating the delimiting of abnormal regions for accurate detection, and meanwhile, the monitoring points are more widely and uniformly distributed as compared with those in the prior art, and are reasonably arranged at key positions, thereby facilitating model verification.

The invention discloses a method for online positioning a broken pipe of an urban water supply network based on SCADA data and a real-time model. The method comprises the following steps of: firstly, detecting a pressure wave trough to determine the suspected pipe breaking time boundary and checking measurement points; then selecting measurement points with remarkable abnormality change in the measurement points according to the flow abnormality change of the measurement points after each pipe breakage happens; designating a rectangular region to serve as an initial region for searching pipe breaking points by a real-time optimizing and checking model according to locations of the measurement points; and finally iteratively solving a minimum value by taking the sum between the pressure simulation value and actual valve of a pressure measurement point in continuous cycle as the evaluation standard of a target function so as to acquire the most probable pipe breaking node pipe breaking flow. The method can be used for quickly detecting and positioning pipe breaking and other abnormal incidents with high accuracy, and reducing hurt of pipe breaking for the water supply network system.

The invention belongs to the field of leakage loss detection of a pipe network, and particularly relates to a leakage loss detection method combining district metering areas (DMAs) with a leakage loss recording instrument for an urban water supply pipe network. A water supply pipe network is partitioned into a plurality of DMAs, and the inlet of each DMA is provided with a flow meter for continuously monitoring the minimum night flow of the DMAs. When flow data indicates possible leakage loss of a DMA, the leakage loss recording instrument is used for monitoring as well as checking leakage loss and positioning a leakage loss point according to a signal. By the leakage loss detection method, the advantages of DMA partitioned monitoring and leakage loss recording instrument monitoring are brought into full play, leakage loss can be found in time and a leakage loss point is positioned quickly. By the method, the problems of high data acquisition workload, slow response and the like caused by independent use of the leakage loss recording instrument are solved, and the defects of difficulty in the check of leakage loss and the positioning of the leakage loss point caused by independent use of DMA partitioned monitoring are overcome. Leakage loss monitoring efficiency can be improved greatly and the operating management level of the pipe network is increased. The method is suitable for monitoring leakage loss in the urban water supply pipe network, and can be used for monitoring leakage loss of pipelines such as a reclaimed water pipe network, a thermal pipeline, an oil gas pipeline and the like.

The invention pertains to the technical field of leakage detection of pipes, and in particular relates to a leakage detection technology comprehensively utilizing a leakage noise recorder, a manual leakage listening detecting rod and the like, and an application method of the leakage detection technology to the urban water supply network. Based on the noise leakage detecting method of a leakage recorder, the signals of the leakage recorder are analyzed by a water supply network geographic information system (GIS) platform, and the key check area is determined; and further, the key check area is detected by comprehensively using the leakage recorder and the manual leakage listening detecting method so as to determine the leakage and locate the leakage point. The leakage detecting method combines the leakage detecting method by using the leakage recorder which has extremely high sensitivity on sound signals with the manual leakage listening detecting method, and is used for analyzing the leakage signals by utilizing the GIS platform, thereby not only effectively avoiding aimless check of a large-scale pipe network by using the manual leakage listening detecting method independently, but also avoiding a great quantity of misinformation signals by utilizing the leakage recorder independently and heavy check work caused thereby. The leakage detecting method not only can be used for detecting leakage of urban water supply networks, but also can be used for detecting leakage of pipes of urban reclaimed water supply networks, industrial oil pipes, industrial circulating cooling water pipes and the like.

The invention discloses a method for short-term prediction of salt tide at a water intake in a tidal river region. The method comprises the following steps of: analyzing the following influencing factors: the flow of upstream hydrologic monitoring stations and the tide level difference, water unavailable hours and average chloride concentration of the water intake in a day so as to establish a BP-RAGA coupled neural network salt tide forecasting model and predict the water unavailable hours and average chloride concentration of the water intake in the next day; and determining the water available hours and amount of each water intake on the basis of the prediction so as to determine the time and space distribution of raw water intaking amount of the tidal river in the next day and finally draw up a dispatching predetermined plan of a raw water system by combining an optimal dispatching module of the raw water system, so that the safe operation of the raw water system and safe urban water supply are ensured. Compared with the conventional prediction systems, the method can dynamically determine the weight of each influencing factor in the prediction module by fully using existing information, improve the sensitivity and precision of the prediction and have lower rate of missing report and false report.

The invention discloses a pipe damage probability prediction method based on a BP neural network, and belongs to the technical field of urban water supply pipe networks. The method comprises the steps: carrying out the early data preparation for the prediction of the pipe damage probability; selecting a to-be-predicted pipe network region, and determining a training data range through the whole pipe network, an administrative area and a peripheral buffering region; selecting an influence factor causing the damage to a pipe, and extracting a training sample, needed by modeling, in the training data range; training a model through employing a BP neural network algorithm and the training sample, and evaluating the stability and prediction precision of the model through employing an ROC curve based on 10-fold cross validation; applying the trained model in the to-be-predicted pipe network region, and obtaining the probability that each pipe will be damaged; classifying the pipe damage probability in ArcGIS through employing a natural break point method, and making a thematic map. The method enlarges the research content of a conventional pipe damage probability prediction model, and provides a new idea for the building of a water supply pipe network asset management scientific method.

The invention belongs to the technical field of detection and provides a pipe network blocking detecting device. The pipe network blocking detecting device is characterized in that as an external detecting device used for the pipeline blocking, the detecting device has functions of blocking fault alarming and blocking fault point positioning. A clamping device of a sensor is convenient to detach and mount and composed of an upper clamping handle, a rotary shaft, an upper cable, an upper soft rubber gasket, an upper arc iron plate, a lower clamping handle, a lower soft rubber gasket, a low arc iron plate, a lower cable and a releasable fastener. The pipe network blocking detecting device has the advantages that the clamping device is simple and durable, common running of the pipe network is unaffected during detection of the device, and detection runs smoothly without influence from complicated pipe network. The pipe network blocking detecting device is suitable to blocking identifying and positioning of the industrial feed piping, the urban feed piping and the like and is rapid to respond the fault, easy to mount and operate, high in detecting accuracy and like.

The invention discloses a water purifying device, which comprises the following parts: reserving tank from inlet, secondary pressurized pump, secondary water-supplying pressure tank, secondary water-supplying tank, purifier and ore purifying tank behind purifier, wherein the filter layer, activated carbon layer, medical stone layer, coral sand and pearl sand, quartz sand layer, activated carbon layer with loop magnesium, mineral ball layer and ceramic sand layer are overlapped on the porous suspending board of ore purifying tank bottom from upwards to downwards; the ultraviolet disinfecting lamp protected by sealed glass lid is set on three-elevation bottom of water reserving tank and secondary water-supplying tank; the lid and inlet pipe with water level self-valve are set on the top of secondary water-supplying tank and ore purifying tank with outlet pipe and cleaning drainage pipe on the bottom. The invention can be urban water-supplying equipment of secondary pressurization, which is fit for centralized urban-rural or self-supplying terminals to purify and sterilize.

The present invention relates to sewage treatment and urban water supply treatment, in the concrete, it is an ecological safe composite high-effective flocculant which can be serially used for making pretreatment before water supply, industrial waste water treatment and domestic sewage treatment. The flocculant uses iron salt, starch, anhydrous ethyl alcohol and sodium hydroxide as raw material, in which the iron salt and corn starch are main component, anhydrous ethyl alcohol or water can be used as reaction solvent, the sodium hydroxide can be used for making modification of corn starch, the mass ratio of iron in the iron salt and starch is 1:1-1:100. Its preparation method includes: (1) modification of corn starch and (2) compounding reaction to obtain whitish yellow or reddish brown emulsion-live flocculant.

The invention relates to a sewage treatment process, in particular a domestic sewage disposing, recycling and utilizing plant, where the handling method comprises the steps of, (1) pre-conditioning adjustment, (2) anoxybiotic processing, (3) aerobic processing, (4) deposition, (5) filtering, (6) filtering biological carbon, (7) sterilization treatment. While the treating plant comprises a pre-conditioning adjustment tank, a biological chemical treatment tank, a filtering tank and a disinfection recycling tank.

The invention belongs to the field of pipe network leakage monitoring and particularly relates to a pipe network leakage monitoring method combining a leakage probability calculation process and an acoustical signal-based leakage recorder monitoring process. In the invention, a genetic programming process is used to establish a functional relationship between independent variables, such as pipe age, pipe diameter and pipe length, and leakage times, and a pipe network geographic information system (GIS) platform is combined to determine key areas to be monitored; furthermore, the leakage recorder monitoring process is used to clear leakage and position leakage points. The method can greatly improve leakage monitoring efficiency, reduce labor intensity of manual leakage monitoring and improve operation management level of a pipe network. The method is not only suitable for leakage monitoring of urban water supply pipe network, but also the leakage monitoring pipes such as recycled water pipe networks, heat distribution pipe and oil and gas pipes.

The invention relates to an online leakage monitoring method for an urban water supply pipe network. The method comprises the following steps: water flow speed sensors are mounted at joints of water supply pipes, pipe segments prone to leak and pipe segments leaking frequently, so as to monitor the water flow speed in real time; the number of the sensors is counted, each sensor mounting point is used as a test point, each monitoring point regularly uploads the water flow data of the monitoring point to an upper computer system, and the water flow data are used for leakage analysis and judgment; the upper computer system receives the real-time water flow speed and then sends the water flow speed to a monitoring end in a wireless communication manner through a wireless communication module connected with the upper computer system; the monitoring end receives the real-time water flow speed sent by each test point and judges whether the water supply tubes leak; when the water pipes leak, the water flow speeds of all the test points are compared and analyzed to judge leakage points of the water pipes. The method has the advantages that steps are simple, implementation is facilitated, monitoring directed at the water supply pipe network can be achieved to the greatest extent, waste of water resources is prevented, and the water supply stability of the water supply pipe network is guaranteed.

The invention discloses a real-time hydraulic information based dynamic division and control method of a city water supply zone, which belongs to the technical field of water conservancy monitoring. The dynamic division and control method comprises the following steps: an SCADA (Supervisory Control And Data Acquisition) system is used for collecting the pressure data of nodes, such as pressure measurement points, water works, pump stations and the like, from a water supply network; then data is preprocessed by a data mining means; then, pressure data samples are subjected to system cluster analysis; according to a cluster result and a block scale, zone scale indexes are clustered; and finally the blocks are combined and divided by a geographical connected graph to form a final division result. Based on data information obtained from pressure measuring points and in consideration of the practical geographical conditions, the dynamic division and control method can be used for reasonably dividing the city water supply zone and controlling the block scale so that the block scale meets the requirement, thereby bringing convenience for management. The dynamic division and control method can be widely applied to managing, monitoring and controlling the large city water supply dispatching system.