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3085results about "Service pipe systems" patented technology

AI-based leak detection and localization system in water distribution infrastructures

A system for AI-supported leak detection and localization in water distribution infrastructures, consisting of: a large number of distributed sensor nodes mounted along a water pipe, each sensor node comprising the following: a pressure sensor configured to measure local hydraulic pressure fluctuations within the pipeline with a resolution of at least 0.01 bar; a flow sensor configured to measure the volume flow within the pipeline with an accuracy of at least ±0.5% of the measured value; an acoustic sensor configured to detect vibration signatures caused by leaks in a frequency range between 50 Hz and 20 kHz; an embedded microcontroller with integrated analog-to-digital conversion circuitry for digitizing sensor outputs; a wireless communication module configured to transmit time-synchronized sensor data to a cloud-based processing platform; and a local energy subsystem with a rechargeable battery and an optional circuit for generating photovoltaic energy; the cloud-based processing platform includes an artificial intelligence engine that comprises the following: a data acquisition module configured to receive and decode the transmitted sensor data and to perform time alignment; a supervised learning module that is trained on historical data of flagged leaks and non-leaks to classify incoming sensor patterns; an unsupervised learning module configured to detect anomalies by modeling normal operating baselines of the pipeline; and a topology-aware localization module configured to determine leak coordinates using the topology of the pipeline network, modeling the propagation of hydraulic waves, and estimating the arrival time difference from multi-node acoustic detections; and wherein the system is configured to provide real-time leak alerts and georeferenced visualization via a remote monitoring interface.
Owner:KULKARNI TANAY HASLET

Real-time monitoring of physical components using machine learning models

Various automated techniques are disclosed herein for monitoring and assessing real-time and future operational and health statuses of real-world assets (e.g., physical devices, components, equipment, structures, buildings, machines, infrastructure, piping systems, etc.). A monitoring system incorporates the use of intelligent Monitoring Devices for monitoring pipe systems and / or other infrastructure for leaks / issues using IoT devices and machine learning. One or more Monitoring Device(s) are attached to specific physical equipment / structure(s) to be monitored. A Monitoring Device performs comprehensive field data gathering. The collected field data is used to train a customized ML model, which is stored locally in that Monitoring Device. The Monitoring Device monitors current conditions of the pipe using various sensors, and uses its locally stored customized, trained model to perform real-time, edge-based analysis of the monitored data to identify possible issues in real-time and / or to predict future maintenance / service needs without relying on continuous cloud connectivity.
Owner:IOT TECHNOLOGIES LLC

Fluid monitoring and control system

A fluid control device includes a fluid pipe section including a fluid inlet and outlet connectable in series to a fluid pipe. A fluid valve is coupled in series within the fluid pipe section separating a fluid inlet and outlet side and controlling a fluid flow. An electric motor is mechanically connected to the fluid valve. A temperature sensor is connected to the fluid pipe section monitoring a temperature of the fluid flow. A pressure sensor is connected to the fluid pipe section monitoring a pressure of the fluid flow. A flow rate sensor is connected to the fluid pipe section monitoring a flow rate of the fluid flow. A control device processor is electrically connected to the electric motor and electrically connected to the sensors. A communication device coupled to the control device processor is for wirelessly connecting to a remotely disposed fluid monitoring and control system.
Owner:FORTUNE BRANDS WATER INNOVATIONS LLC

Water and gas pipeline network monitoring system with FBG sensors

PCT designated stage expiredWO2025078940A1Service pipe systemsWater mainsFiberControl cell
A method (100) of monitoring and controlling for hydraulic and gas distribution pipeline networks comprises the steps of: providing a pipe (1) of polymeric material for water or gas installations suitable for connection in series with other pipes; Arranging and fixing on the diametral surface of said pipes (1) at least a fiber optic conductor (12) provided with an optical transmitting core (15) and at least a Fiber Bragg Grating FBG (14) sensor; arranging coating means (30) around said pipe for the protection of said fiber optic conductor (12); configuring said optical fiber conductor (12) to be connected to a control unit (20) capable of sending a light signal; and configuring said fiber optic FBG sensor (14) to send a reflected light signal dependent on the variation in size of said pipe (1). The invention also includes a pipe (1) or conduit for hydraulic or gas distribution pipeline networks comprising at least one fiber optic conductor (12) and a distribution pipeline network (10) comprising at least a pipe (1).
Owner:RICCINI +1

Water supply energy-saving safe scheduling and purifying intelligent control system

The invention discloses a water supply energy-saving safe scheduling and purification intelligent control system, and relates to the field of water supply energy-saving purification, and the system comprises a sensing module, a calculation module, an acquisition terminal, a scheduling module and a purification module.A final water demand prediction value is obtained by constructing a time-sequence-dependent water use feature set and performing prediction and error correction on an LSTM model; performing water supply energy-saving safety scheduling analysis, generating a water supply pipeline equipment control parameter combination, performing pipeline state abnormity and pipeline fluid pressure analysis, calculating a pipeline state abnormity value, performing pressure loss state change analysis when the pipeline fluid flows to obtain a pipeline fluid pressure loss value, and performing image construction to obtain a water pipeline pressure difference value; the electronic valve works according to the adjusted valve opening value through the scheduling module, and the calculation module receives the water quality data obtained by the sensing module and performs corresponding valve control and purification treatment, so that responsibility complaints of users are greatly reduced, and resource waste is reduced.
Owner:HYDROGEN-OXYCARBON (NINGBO) TECHNOLOGY CO LTD

Concrete regulation and control system and method integrating heat recovery, spraying and gradient control

The invention provides a concrete regulation and control system and method integrating heat recovery, spraying and gradient control, and relates to the technical field of concrete curing, and the concrete regulation and control system comprises a temperature sensing element and a humidity sensing element which are mounted on reinforcing steel bars in a concrete structure in a layered manner in the depth direction; the cooling water circulating system comprises a water pump and a cooling water pipe, and the cooling water pipe is arranged in the mass concrete structure and externally connected with a variable frequency circulating pump; the double-water-tank system is matched with the heater to realize graded regulation of water temperature; the automatic spraying system is connected with the integrated electric heating module; the heat recovery and circulation assembly is connected with an outlet of a cooling water pipe in the concrete, recovers concrete hydration heat brought out by the cooling water pipe, and transfers heat of high-temperature cooling water with the temperature being 50 DEG C or above to the phase change heat storage tank; the central control unit continuously receives and records monitoring data of the temperature sensor and the humidity sensor and analyzes the monitoring data in real time, and when the temperature gradient or the humidity gradient exceeds the limit, a gradient field control instruction is automatically triggered to achieve energy efficiency maximization.
Owner:SHANGHAI NANHUI BUILDING ENG LTD +1

Photovoltaic power generation and air water taking irrigation system

The invention provides a photovoltaic power generation and air water taking irrigation system, comprising: a photovoltaic power generation module for generating electric energy by using light energy; the gel adsorption module is connected with the photovoltaic power generation module and is used for adsorbing water vapor in air by using gel and driving the gel to desorb and release the water vapor by using waste heat generated by the photovoltaic power generation module; the condensation water collection module is connected with the gel adsorption module and is used for condensing the water vapor to obtain condensed water; the crop irrigation module is connected with the condensation water collection module and is used for irrigating crops by utilizing the collected condensate water; the soil detection module is connected with the crop irrigation module and used for controlling irrigation according to the detected crop root system soil humidity, collaborative production of water, electricity and crops can be achieved under the condition that no external input exists in the island reef environment, and the problems that in the island reef environment, fresh water is in shortage, electricity is insufficient, and self-sufficiency of agricultural production is difficult are solved.
Owner:UNIV OF SHANGHAI FOR SCI & TECH

Method for adjusting pressure and flow of water supply network

The invention belongs to the technical field of water supply network adjustment, and particularly relates to a water supply network pressure and flow adjusting method. The method comprises the following steps: firstly, collecting pressure, flow and water temperature data of a monitoring node at present and in a preset time period, wherein the preset time period is set according to a water consumption period; preprocessing flow data through a sliding window method and fitting a curve, and marking an instantaneous disturbance time period; the dynamic response coefficient of each disturbance time period is calculated, and water temperature correction is needed; combining the flow standard score, the dynamic response coefficient and the real-time deviation coefficient to obtain a flow dynamic regulation index; a pressure stability index is obtained through pressure and water temperature trend feature vector matching; the two are subjected to weighted fusion to form a pipe network comprehensive regulation factor, and the valve opening and the water pump power are regulated accordingly. The method can accurately identify instantaneous disturbance, improve the adjustment precision and response speed, and guarantee stable water supply.
Owner:HEZE SMART WATER CO LTD

Building water supply and drainage system based on building BIM

The invention relates to the technical field of building engineering management, in particular to a building water supply and drainage system based on a building BIM (Building Information Modeling), which comprises a pipeline drawing generation module, an interface arrangement verification module, an arrangement space detection module, an operation data monitoring module and a fluid risk early warning module. According to the method, standardized drawing mapping of the pipeline trend, size and node layout is achieved through structured extraction of the BIM model, it is ensured that drawing output is complete and consistent, interface offset is automatically compared, abnormal arrangement is accurately recognized, the installation accuracy is improved, component conflicts can be pre-judged through space node clear distance analysis, field coordination is assisted, and the construction efficiency is improved. The method comprises the following steps: monitoring flow velocity pressure of a key drainage section, screening abnormal nodes, filing a hydraulic state, analyzing high-frequency risk points in a time sequence, marking continuous abnormity, providing operation early warning support, constructing drawing generation, arrangement verification, space coordination and a data feedback closed-loop process, and improving construction design accuracy and system operation stability.
Owner:TIANKUN CONSTR (JIAXING) CO LTD

Robust control automatic setting method for constant-pressure water supply system

The invention provides a robust control automatic setting method for a constant-pressure water supply system, and the method comprises the steps: obtaining a system working condition in real time, and extracting multi-dimensional state parameters including real-time flow, pressure deviation, current deviation and power deviation; the current load working condition is judged according to the pressure deviation, disturbance characteristics are analyzed by integrating all parameters, and the disturbance grade and type are determined. On the basis, robust control parameters are automatically set in combination with real-time working conditions, load conditions and disturbance characteristics of the system. And finally, performing multi-stage cooperative control on the system by using the set parameters, so that the constant-pressure water supply system is automatically set. According to the robust control automatic setting method for the constant-pressure water supply system, load working conditions and disturbance characteristics are recognized based on multi-dimensional state parameters, robust control parameters are self-set in a targeted mode, and automatic setting of the constant-pressure water supply system is achieved through multi-stage cooperative control. Therefore, the intelligent level of the constant-pressure water supply system and the adaptability in different operation environments are effectively improved.
Owner:GUANGZOU BAIYUN PUMP GROUP

Multi-pump collaborative variable-frequency energy-saving water supply equipment and control method

The invention discloses multi-pump collaborative variable-frequency energy-saving water supply equipment and a control method, belongs to the technical field of intelligent control of water supply equipment, and aims to solve the problems of high energy consumption and poor adaptability of traditional water supply equipment. The method comprises the following steps: collecting water consumption data, extracting features through a sliding window, screening parameters through principal component analysis to construct a feature parameter set, dividing feature clustering groups in combination with time attribute clustering, and associating water consumption time periods and demand intensity grades to construct a typical water consumption mode; according to the water pump performance curve and the attenuation index, constructing an updated dynamic capability matrix; matching a target water consumption mode, screening water pumps to construct an execution pump set, decomposing a flow demand and distributing a load to generate a regulation and control instruction; and executing the instruction and counting the deviation accumulated duration, and judging whether to update the instruction. Dynamic adaptation of the water pump set and the water demand is achieved, and the water supply stability and the energy saving performance are improved.
Owner:SHANGHAI PANDA MACHINEGRP CO LTD

Urban pipe network intelligent water supply system and method based on Internet of Things

The invention belongs to the technical field of intelligent water supply, and provides an urban pipe network intelligent water supply system and method based on the Internet of Things. Acquiring pipe network information in real time through a data acquisition module; the pipe network information is uploaded to a cloud platform through a data transmission module; analyzing the pipe network information through a data processing module, marking abnormal data, and predicting the state change of the pipe network in combination with a digital twin model and the collected real-time pipe network information; when it is detected that the pressure is abnormal or the water quality exceeds the standard, a regulation and control scheme is automatically generated, and a regulation and control instruction is sent to the execution module; the execution module adjusts the output power of the variable-frequency water pump and the opening degree of the electric control valve according to the control instruction to achieve dynamic balance of the pipe network; synchronously updating the operation state of the pipe network through a visual interface; the technical problems that in the prior art, the regulation and control decision of a water supply system is lagged and excessively depends on artificial experience are solved.
Owner:LINYI HUANXIANG WATER METER CO LTD

Systems and Methods for Automatically Mitigating Risk of Water Damage

Methods and systems for automatically mitigating risks of water damage to a property caused by insurance-related events are provided. A smart home controller and / or insurance provider remote processor may analyze data received from a smart device disposed on, within, or proximate to a property associated with monitoring water flow, as well as data received from an insurance provider. If it is determined that an actual or potential risk of water leakage exists, the smart home controller or remote processor may automatically issue commands to the smart device to take actions that mitigate the risk of water damage. The smart home controller may transmit information about the actual or potential water leakage risks and any mitigative actions to an insurance provider. The insurance provider remote processor may interpret the transmitted data and perform insurance activities, such as providing a discount or premium, and / or adjusting an insurance policy associated with the property.
Owner:STATE FARM MUTAL AUTOMOBILE INSURANCE COMPANY

Pulse flushing method and system for water supply network

The invention relates to the technical field of water supply network flushing, and discloses a pulse flushing method and system for a water supply network, and the system comprises a collection module which is configured to collect the water quality data of a pipeline before flushing and the water quality data of a pipeline after flushing in a pipe network monitoring area; recording the water quality data of the pipeline before flushing as first pipeline water quality data and recording the water quality data of the pipeline after flushing as second pipeline water quality data; the acquisition module is further configured to acquire the thickness of pipeline sediment in a pipe network monitoring area; the processing module is used for determining initial flushing parameters of the pulse flushing device according to the pipeline pollution degree index and the pipeline sediment thickness; the judging module is used for judging whether the pipe network monitoring area needs to be recharged or not according to the comparison result; and the supplementary flushing module is used for flushing the interior of the pipe network monitoring area according to the supplementary flushing parameters. Through cooperative work of all the modules, the whole pulse washing process is more efficient and controllable.
Owner:SHANDONG JIANZHU UNIV

Pump station optimization scheduling method

The invention discloses a pump station optimal scheduling method, which comprises the following steps of: setting a target function by taking the minimum power consumption carbon emission intensity Ee of a pump station as a target and taking the startup and shutdown variable and the water pump speed regulation ratio of each water pump in the pump station as decision variables; setting constraint conditions for solving the objective function, wherein the constraint conditions comprise water supply flow and water supply pressure constraints of the pump station; and solving a pump station optimization scheduling scheme. And using a plurality of different intelligent optimization algorithms to solve the new objective function to obtain a plurality of pump station optimization scheduling schemes, thereby determining an optimal pump station optimization scheduling scheme. The water supply requirement can be met, and low-carbon water supply can be achieved to the maximum extent.
Owner:HUNAN ARCHITECTURAL DESIGN INST

Energy-saving full-automatic variable-frequency constant-pressure water supply equipment

The utility model discloses energy-saving full-automatic variable-frequency constant-pressure water supply equipment, which relates to the technical field of water supply equipment and comprises a pressure tank, a water inlet flange is fixedly arranged at the top end of the pressure tank, a water outlet pipe is fixedly arranged at the bottom end of the pressure tank, and an extension pipe is fixedly arranged at one end of the water outlet pipe. And a plurality of water pumps are arranged on one side of the pressure tank. The pressure tank and the water pump are arranged and connected in series, the water pump can pressurize water in the pressure tank in the water supply process so as to ensure that the water pressure of a pipe network is constant, and the filter screen is arranged in the pressure tank and is of a C-shaped structure, so that the water pressure of the pipe network is kept constant in the water filtering process. Impurities can be collected in the filter screen, so that the filter screen is convenient to disassemble and clean, and the design of the C-shaped structure can prevent the impurities from falling off in the disassembly process of the filter screen, so that the water quality in the equipment can be prevented from being influenced by the disassembly of the filter screen.
Owner:AOLI MACHINERY GRP

Digital pump water supply control method, system and equipment based on pressure and flow

The invention discloses a digital pump water supply control method, system and equipment based on pressure and flow, and relates to the field of digital pump water supply.The method comprises the steps that historical water consumption data of a user in a water supply network in different time periods are obtained, and the historical water consumption data comprise the water outlet pressure and the water outlet flow of the water outlet end of a water supply unit; constructing a water demand data model based on the historical water consumption data, and predicting target pressure and target flow of the user at different time points in a first preset time period through the water demand data model; generating a water demand instruction based on the target pressure and the target flow, the water demand instruction comprising a mapping relationship between the target pressure and time and a mapping relationship between the target flow and time; and the common pump and / or the standby pump are / is started through the water demand instruction, and the water outlet pressure and the water outlet flow of the water supply unit are controlled through the common pump and / or the standby pump. The problem that the water supply amount is insufficient due to the fact that the water consumption of the user cannot be accurately controlled and predicted is solved.
Owner:SHANGHAI PANDA MACHINEGRP CO LTD

College water-saving equipment central control system based on digital twinning

The invention relates to the technical field of water-saving equipment central control. The invention relates to a college water-saving equipment central control system based on digital twinning, and the system comprises a data collection unit which is used for collecting the related data of a college water supply system, teaching building water equipment and teaching building water-saving equipment, and then collecting the building layout data of a teaching building; the water consumption area generation unit is used for creating a digital twin model according to the data collected by the data collection unit, and performing water consumption area division on water consumption equipment according to different installation positions in the digital twin model; sensors are widely installed on a college water supply system, teaching building water consumption equipment and water-saving equipment, water source, water transmission and distribution pipe networks and water consumption detail data such as pipe network flow, flushing amount, hand washing water consumption and the like in different time periods are collected in real time, and the water-saving equipment is accurately regulated and controlled in combination with access control opening time, building layout and work and rest rules of teachers and students of the college.
Owner:FUJIAN ZHONGSHUI TIMES ECOLOGICAL TECH CO LTD

Intelligent water supply frequency conversion regulation and control method based on cooperation of multiple pump rooms

The invention relates to the technical field of water supply pipe networks, and discloses a multi-pump-room collaborative intelligent water supply frequency conversion regulation and control method, which comprises the following steps: initializing sensor calibration and data acquisition, generating a standardized data packet by using Kalman filtering, constructing a differential algebraic equation model, and online updating a pipe network topological characteristic matrix in combination with a mixed basis function observer. Layered optimization control and frequency conversion cooperative regulation and control are driven, 30-100ms-level real-time solution of a differential equation is realized by means of a hardware acceleration module, a three-dimensional pressure cloud picture is finally generated, and early warning is triggered based on a current harmonic threshold value. The transient fault capturing capability is enhanced by dynamically adjusting the data acquisition frequency, and the problem of signal distortion caused by traditional fixed sampling is solved; resource allocation is optimized and calculated in combination with a pipe network topology model dimension reduction technology, and calculation power waste in large-scale monitoring is reduced; and dynamic reconstruction of the model is driven by abnormal data to realize system self-adaption, so that manual parameter adjustment deviation is avoided, and the prediction precision and the diagnosis reliability are remarkably improved.
Owner:HAINAN LANYU TECH GRP CO LTD

Pipe network large circulation system for direct drinking water pipeline

The invention discloses a pipe network large circulation system for a direct drinking water pipeline, which is combined with five functional modules, namely an intelligent monitoring module, a water leakage monitoring module, a pressure adjusting module, a health assessment module and an intelligent operation and maintenance module to form a set of integrated pipe network management system based on multi-source perception, intelligent analysis and visual decision. Compared with the prior art, the system has the advantages that the accuracy of pipeline abnormity identification, the positioning efficiency of a water leakage problem, the response timeliness of pressure regulation and the scientificity of health assessment are remarkably optimized, and meanwhile, data-driven pipe network full-life-cycle management is realized through an intelligent operation and maintenance means. On the whole, the system has remarkable technical progress and application value in the aspects of improving the intelligent level of an urban water supply system, guaranteeing water supply safety and operation economy and the like.
Owner:NINGXIANG YUQUAN DIRECT DRINKING WATER CO LTD

Cleaning machine

The utility model discloses a cleaning machine. The cleaning machine comprises a water storage container, a water mixing valve, a water outlet assembly and a circulating filtering assembly, the water storage container is provided with a first water cavity and a second water cavity, the first water cavity is used for being communicated with an external hot water source, and the second water cavity is used for being communicated with an external normal-temperature water source; the water mixing valve is respectively communicated with the first water cavity and the second water cavity; one end of the water outlet assembly is communicated with the water mixing valve, and the other end of the water outlet assembly is used for being communicated with a water using end; the circulating filtering assembly is provided with a water suction end and a connecting end, the connecting end is communicated with the second water cavity, and the circulating filtering assembly is used for sucking water used for washing or other water sources through the water suction end, filtering the water or other water sources and then conveying the water or other water sources into the second water cavity. The cleaning machine provided by the utility model has high utilization rate of water resources.
Owner:FOSHAN SHUNDE MIDEA WASHING APPLIANCES MANUFACTURING CO LTD +1

Appliance outlet box

An outlet box assembly includes an outlet box housing, configurable between a first and second orientation, and a funnel assembly. The outlet box housing includes a first wall portion and a second wall portion. The first wall portion includes a first socket portion, including a first knock out portion, and at least one through hole. The first knock out portion includes a first knock out body and an area of weakening. The through hole attaches a plumbing fitting to the first wall portion. The second wall portion includes a second socket portion including a second knock out portion including a second knock out body and an area of weakening. The funnel assembly has a fixed funnel portion and a funnel cover configured to be removably attached to the fixed funnel portion. The funnel assembly is configured to direct fluid to the first or second socket portion.
Owner:RELIANCE WORLDWIDE CORP

Corn field water-saving irrigation system and irrigation method

The present invention relates to a corn field water-saving irrigation system, comprising a water tower, a water pump, an output main pipeline, a delivery branch pipe, a nozzle and a nozzle. The water pump is connected to a plurality of delivery branch pipes, and each delivery branch pipe is provided with an independently controlled branch valve. The delivery branch pipe is fixed along the ground by the clamp and the positioning pile; a protective box is provided on the outer side of the delivery branch pipe, and a wireless transmitter and a soil moisture sensor are provided in the protective box, and the detection end of the soil moisture sensor is inserted below the ground. A relay transceiver is provided on the corn field; the soil moisture data sensed by the soil moisture sensor is sent to a nearby relay transceiver through a wireless transmitter; a plurality of relay transceivers transmit the data in a relay manner, and finally send it to a data concentration controller, and then transmit it to a control background through the data concentration controller, and the control background adjusts the opening and closing and opening degree of the branch valve of the delivery branch pipe and the power of the water pump according to a preset program to achieve the purpose of water-saving irrigation.
Owner:HENAN ACAD OF AGRI SCI INST OF GRAIN CROPS

Secondary water supply end user pressure stabilization energy-saving control device and method based on water consumption real-time prediction

The invention discloses a secondary water supply end user pressure-stabilizing and energy-saving control device and method based on water consumption real-time prediction, and belongs to the field of secondary water supply intelligent control, and the device comprises an Internet of Things sensing system, a water consumption information prediction system, a secondary water supply pipe network digital simulation system, a pump set intelligent control system and a computer management and cloud platform system. Pipeline models of different buildings are obtained through rapid modeling, secondary water supply pipeline head loss values under different flow conditions are obtained by combining pressure sensing correction of the most unfavorable point based on water consumption prediction calculation, and then the pump set outlet pressure which should be met in real time under the condition that the user terminal pressure is constant is obtained. And the frequency of the intelligent control system of the pump set is dynamically adjusted, so that the outlet pressure of the water pump is optimally controlled, different water supply demands are met, frequent changes of pressure of end users are reduced to the maximum extent, and the power consumption of the pump set is remarkably reduced while the water use experience of residents is improved.
Owner:SHANGHAI URBAN INVESTMENT WATER (GRP) CO LTD WATER BUSINESS ACCEPTANCE BRANCH

Water supply resource intelligent scheduling system and method in extreme weather

The invention relates to the technical field of intelligent scheduling of water supply resources, in particular to an intelligent scheduling system and method for water supply resources in extreme weather, in which a time sequence coupling analysis unit collects pipe network pressure, turbidity and meteorological early warning data in real time, identifies the peak time period of the turbidity abrupt change rate through dual-channel verification, and sends the peak time period of the turbidity abrupt change rate to a cloud server; the dynamic strategy generation unit divides scenes according to the coefficients, starts staged pressure relief in a high-contact-ratio scene, controls total duration and single-stage pressure drop, integrates real-time compensation of flow velocity, generates a pre-pressure-relief instruction in a low-contact-ratio scene, and generates a pre-pressure-relief instruction according to the pre-pressure-relief instruction, and the dynamic strategy generation unit generates a pre-pressure-relief instruction according to the pre-pressure-relief instruction and the single-stage pressure drop in the high-contact-ratio scene. And the pipe network topology compensation correction triggering time is fused, and the execution intensity of two types of instructions is dynamically allocated in a mixed scene, so that the pipe network pressure and water quality collaborative guarantee in extreme weather is realized, and the safety and stability of a water supply system are maintained.
Owner:RURAL ELECTRIFICATION RES INST OF THE MINISTRY OF WATER RESOURCES

Green modular rural house fabricated building

The invention relates to the technical field of fabricated buildings, and discloses a green modular rural house fabricated building which comprises a front side plate and a rear side plate which are tightly attached to the upper surface of a fabricated bottom plate, a left side plate and a right side plate which are attached to the side faces of the front side plate and the rear side plate, and fabricated top plates which are tightly attached to the upper ends of the front side plate, the rear side plate and the left side plate and the right side plate. Limiting plates are symmetrically arranged on the left and right sides of the front and rear side plates, and positioning grooves are formed in the left and right side plates. According to the green modular rural house fabricated building, a photovoltaic panel and a filter plate can be cleaned through a first cleaning brush and a second cleaning brush arranged on a cleaning plate, the situation that leaves and impurities affect the flow speed of rainwater and cause water accumulation on a roof is avoided, the filtered and collected rainwater is stored in a water storage tank, and the water storage tank is assembled and fixed to the side face of the building; and the stability of the building is prevented from being affected, the water storage tank is prevented from moving due to strong wind and severe weather, precipitated water at the upper end can be utilized all the time through the lifting structure, and the cleanliness of the water is effectively guaranteed.
Owner:JIANCAN CONSTR ENG (HEBEI) CO LTD

Occupancy surveillance for plumbing fixtures

A control system for a plumbing fixture includes at least a network device, a plumbing fixture, and a controller. The network device is configured to detect a plurality of connections for mobile devices in an indoor space associated with the plumbing fixture. A controller configured to compare the plurality of connections to an occupancy threshold and generate a command for the plumbing fixture.
Owner:KOHLER CO(US)

Secondary water supply control system based on power line carrier communication and control method thereof

The invention discloses a secondary water supply control system based on power line carrier communication and a control method thereof. The secondary water supply control system comprises a steady flow tank, a pump set, a frequency conversion control system and a tail end pressure acquisition system. The frequency conversion control system comprises a touch screen, a PLC, an analog quantity module, a frequency converter and a power line carrier receiving module, the output end of the pump set is connected to a water supply pipe network, the water supply pipe network comprises a water supply pipeline, and a tail end pressure sensor is arranged at the tail end of the water supply pipeline and connected with a tail end pressure collecting system. The tail end pressure collecting system is provided with a power line carrier sending module, the power line carrier sending module is in communication connection with a power line carrier receiving module, the power line carrier receiving module is connected with an analog quantity module, the PLC comprises a PID control module, the analog quantity module and an RS485 communication module, the RS485 module is in communication connection with a frequency converter, preset data are input into the PID control module through a touch screen, and the PID control module is connected with the analog quantity module. And the frequency converters correspond to driving motors of the water pumps one by one to control start-stop and operation rotating speed of the water pumps.
Owner:SHANGHAI LIANCHENG(GRP) CO LTD

Water supply method and water supply system with low water supply energy consumption

The invention discloses a water supply method and system with low water supply energy consumption, and the method comprises the following steps: monitoring the energy consumption data of the water supply system through an energy consumption monitoring technology, and carrying out the automatic alarm processing of the abnormal energy consumption or excessive energy consumption according to the monitored energy consumption data; the energy consumption scheduling technology is adopted to control the pump station in the water supply system to control the energy consumption of the pump station according to the water demand, the water supply module is controlled to control the water supply pressure according to the water supply area, energy recovery is performed according to the energy supply time period, and the recovered energy is adopted to share the energy consumption of the water supply system; determining pressure sensors at key positions of the water delivery pipe network, analyzing pressure data of the pressure sensors at the key positions, and identifying a problem area in the water delivery pipe network; the energy consumption monitoring technology, the energy consumption scheduling technology and the pressure monitoring technology can be comprehensively applied, the energy saving performance of the water supply system can be remarkably improved, the water supply process is optimized, the energy utilization efficiency is improved, and the operation cost is reduced.
Owner:SUZHOU JUDING MUNICIPAL ENG CO LTD

Leak detection sensor assemblies for water heaters

A water heater includes a leak detection system. The leak detection system includes a leak sensor assembly that is disposed in a bottom pan of the water heater. The leak sensor assembly includes a sensor housing that has a sensor channel that is formed therein such that the sensor channel is disposed at an elevation from a base of the bottom pan when the sensor housing is disposed on the base of the bottom pan. Further, the leak sensor assembly includes a leak sensor that is disposed in the sensor channel of the sensor housing. The leak sensor detects water that leaks from the water heater and accumulates in the bottom pan when a level of the water in the bottom pan rises to the elevation of the sensor channel and the leak sensor that is disposed therein.
Owner:RHEEM MFG CO