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939results about "Water supply installation" patented technology

Device for supplying a greywater tank with fresh water from a freshwater connection and system for greywater use

Device (300) for supplying a grey water tank (586) with fresh water from a fresh water connection (302), wherein the fresh water connection (302) has an outlet opening (316), characterized in that in the flow direction (S) of the fresh water, downstream of the fresh water connection (302), there is a fresh water tank (304) for temporarily storing the fresh water, which is connected to the fresh water connection (302).
Owner:SANITAERTECHNIK EISENBERG GMBH

Fire pump station water supply regulation control system and method based on artificial intelligence

The invention discloses a fire pump station water supply regulation control system and method based on artificial intelligence, and the system comprises an obtaining module which is used for obtaining the real-time water supply parameters and environment state information of a fire pump station; the strategy generation module is used for generating an optimal water supply adjustment strategy based on a pre-trained artificial intelligence model according to the real-time water supply parameters and the environment state information; and the control module is used for executing the optimal water supply adjustment strategy to realize intelligent adjustment control of water supply of the fire pump station. The operation efficiency of the fire pump station can be greatly improved, the operation cost is reduced, the reliability and safety of the fire pump station are ensured, and therefore a more stable and efficient guarantee is provided for a fire fighting system.
Owner:JIANGSU HUASHAWATER SUPPLY & DRAINAGE TECH CO LTD

Time-phased intelligent pressure regulation management method and system for secondary water supply

The invention discloses a time-phased intelligent pressure regulation management method and system for secondary water supply, and belongs to the technical field of water supply management, and the method specifically comprises the steps: dividing a day into a water consumption peak period and a water consumption low period based on historical water consumption flow data, and determining the starting and ending time nodes of each time period; through hydraulic calculation and actual water supply pressure monitoring, a pressure control point at the tail end of the water supply system is locked, and water supply pressure data of the point are collected in real time; in the water consumption peak period, a peak pressurization control strategy is executed; in the water consumption low-peak period, analysis is conducted according to historical water supply pressure data of a tail end pressure control point, and a low-peak period pressure safety threshold value is set; a pressure instruction is sent to a control system according to the threshold value, and water supply equipment is controlled to output pressure according to the threshold value; the water supply pressure of a tail end pressure control point is monitored in real time, and when the pressure is lower than a low-peak-period pressure safety threshold value, pre-alarm is triggered, and pressure changes are continuously recorded; and if the pre-alarm state is not finished continuously, switching to a peak-period peak pressurization control strategy.
Owner:FUZHOU URBAN CONSTRUCTION DIGITAL TECHNOLOGY CO LTD

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

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

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

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)

Reclaimed water recycling system matched with production of ethylene oxide and ethylene glycol

The utility model relates to the field of ethylene oxide and ethylene glycol production sewage treatment, and discloses a reclaimed water recycling system matched with ethylene oxide and ethylene glycol production, which comprises a reclaimed water regulating tank (31), a hardness removal sedimentation tank (32), an ozone water inlet tank (33), an ozone contact tank (34) and a reclaimed water post-positioned CBR tank (35) which are sequentially connected, and the reclaimed water post-positioned CBR tank (35) is connected with an RO (reverse osmosis) membrane treatment tank (36). Fresh water discharged from the RO membrane treatment tank (36) is recycled to a low-salt wastewater treatment system (10), and concentrated water discharged from the RO membrane treatment tank (36) is connected to an RO concentrated water hardness removal tank (37); the reclaimed water recycling system not only realizes recycling of circulating water in multiple places, but also can cooperate with efficient treatment of low-salt wastewater and efficient treatment of high-salt wastewater to recycle clear water, so that water saving and emission reduction are realized, the operation cost is reduced, and the treatment efficiency is high.
Owner:ZHEJIANG JUNENG ENVIRONMENTAL ENG CO LTD

Catchment basin for use in a recirculating shower system

The disclosure is directed at a catchment basin for use in a recirculating shower. The catchment basin includes a recirculation pool area for collecting shower water and a drain area. A divider wall separates the recirculation pool area and the drain area. The recirculation pool area is at a higher elevation than the drain area such that the collected shower water travels from the recirculation pool area to the drain area.
Owner:PLEDGE RESOURCE MANAGERS INC DBA RAINSTICK SHOWER

Tunnel top automatic backflow water atomization cleaning device

The invention relates to a tunnel top automatic backflow water atomization cleaning device, and relates to the technical field of tunnel cleaning, the tunnel top automatic backflow water atomization cleaning device comprises a base plate, a plurality of rollers fixedly arranged on the bottom surface of the base plate, and a handle hinged to the side surface of the base plate, the upper side surface of the base plate is provided with a water storage tank, and the two sides, opposite to the water storage tank, of the base plate are provided with collecting boxes with openings in the upper sides; guide plates are hinged to the upper side edges, close to each other, of the two collecting boxes, and adjusting pieces for fixing the rotating states of the guide plates are arranged on the base plate. The upper edges of the two flow guide plates can oppositely rotate to be in an abutting state and are fixed, and at the moment, the flow guide plates are obliquely arranged above the water storage tank; a water spraying pipe is fixedly arranged on the side face, away from the water storage tank, of the flow guide plate, a plurality of atomizing nozzles are installed on the side face, away from the flow guide plate, of the water spraying pipe, a first hose, a second hose and a power part are arranged on the base plate, and a filtering part is arranged at the joint of the collecting box and the first hose. In the application, cyclic utilization of water resources is realized.
Owner:WENZHOU XINGYE MUNICIPAL CONSTR

Ai buried pipeline renewal planning system, ai buried pipeline renewal planning method, and ai buried pipeline renewal planning program

To provide a novel technology for planning renewal of existing pipelines within a renewal range.SOLUTION: An AI-based buried pipeline renewal planning system comprises an acquisition unit that obtains pipeline type information including pipeline renewal costs per pipeline type attribute, a renewal budget that is an annual budget for renewing existing pipelines within a renewal scope, and a renewal priority of pipelines, a pipeline type attribute determination unit that determines post-renewal pipeline type attributes for existing pipelines within the renewal scope, and a planning unit that formulates renewal plans for the existing pipelines within the renewal scope including renewal costs when the existing pipelines within the renewal scope are renewed to the post-renewal pipeline type attributes and renewal timing within the budget.SELECTED DRAWING: Figure 1
Owner:FUJI CHICHIYUU JOHO

A constant pressure water supply control method, system, and medium for a standardized pumping station with dual water supply systems.

This application provides a constant pressure water supply control method, system, and medium for a standardized secondary water supply pump station. The method includes: acquiring and processing multiple historical water supply data points within a preset time period, including water supply time data, corresponding pump water supply pressure data, and user node water supply pressure data, to obtain the water supply pressure level and corresponding water supply pressure and time; processing this data in conjunction with the user node water supply pressure to obtain the pipeline pressure loss value corresponding to the water supply pressure level; acquiring and processing real-time water supply time point data to obtain the water supply pressure level, corresponding water supply pressure, and pipeline pressure loss value, to obtain the real-time demand water supply pressure of the pump; then implementing water supply and acquiring and processing real-time water supply pressure data from user nodes to obtain a real-time water supply evaluation index; finally, performing threshold comparison and adjusting the water supply mode based on the comparison results; thereby achieving constant pressure water supply and precise control of the secondary water supply while reducing energy consumption.
Owner:SHENZHEN SHENGLONG INFORMATION TECH CO LTD

Regional water tank regulation and storage method and system

The invention discloses a regional water tank regulation and storage method and system. The method comprises the steps of obtaining statistical data of a water tank based on collected basic data of the water tank; based on the basic data of the water tank and the statistical data of the water tank, sequentially obtaining an inlet flow velocity fitting result, a water consumption prediction result of a future date and a water tank peak period and water age calculation result; determining a pipe network peak period based on the collected pipe network pressurization point flow data of the area corresponding to the water tank; generating a regulation and storage calculation result according to an inlet flow velocity fitting result, a water consumption prediction result of a future date, a water tank peak period, a water age calculation result and a pipe network peak period; and controlling an electric control valve of the water tank to act based on the regulation and storage calculation result. By means of the scheme, the water inlet period and the liquid level threshold value of the water tank can be dynamically adjusted, pipe network flow fluctuation in the peak period is reduced, and the pressure standard deviation of the pressurization point is reduced. Meanwhile, it can be ensured that water storage or dynamic water replenishing of the water tank is completed before the peak period, and the water utilization gap rate is reduced.
Owner:SHENZHEN SHENSHUI LONGGANG WATER GRP CO LTD

Building pressurized water supply tail end pressure stabilizing and energy saving control method and device and electronic equipment

The invention provides a building pressurized water supply tail end pressure stabilization energy-saving control method and device and electronic equipment, and relates to the technical field of building water supply energy-saving control, and the method comprises the steps: judging whether the pressure value of the highest tail end or the pressure value of the farthest tail end at the second highest position meets a preset condition or not; when the highest tail end pressure value or the second-height farthest tail end pressure value meets a preset condition, the highest tail end pressure value and the second-height farthest tail end pressure value are compared, and the smaller value is selected as the most disadvantageous control point; the tail end pressure of the most disadvantageous control point is controlled to be a preset threshold value through the regulation and control pump set, and pressure stabilizing and energy saving control over the building pressurized water supply tail end is achieved. According to the method, the pressure values of the tail end of the highest floor and the tail end of the longest branch pipe of the horizontal pipeline of the secondary high floor of the building are dynamically monitored, the most unfavorable working condition point in an actual pipe network is selected as the regulation and control reference, the tail end water pressure is accurately stabilized at the preset threshold value, and the problem that the water use experience is poor due to fluctuation of the water outlet pressure of a user is solved.
Owner:SHANGHAI NATIONAL ENGINEERING RESEARCH CENTER OF URBAN WATER RESOURCES CO LTD

Intelligent regulation and control method for direct connection type pipe network pressure-superposed water supply equipment

The invention relates to the technical field of municipal water supply, in particular to an intelligent regulation and control method for direct connection type pipe network pressure-superposed water supply equipment, and the method comprises the steps: extracting the structure and operation feature information of the pressure-superposed water supply equipment and a pipe network connected with the pressure-superposed water supply equipment through a water supply knowledge graph, and building a digital twin hydraulic model; performing simulation calculation and evaluation on hydraulic response of the candidate regulation and control actions in a preset prediction time domain in each regulation and control period, and constructing a first safety constraint based on a negative pressure risk index and a water attack risk index; meanwhile, anti-fact reasoning is conducted on candidate regulation and control actions on a working condition causal graph model, a second safety constraint and strategy prior are constructed in combination with a predefined accident chain, and a safety action domain is limited from physical simulation and working condition causal double-layer constraint; regulation and control actions possibly causing safety incidents such as negative pressure, water hammer or pipe explosion can be recognized and eliminated in advance before control issuing, and compared with a traditional control mode only based on in-situ pressure regulation or an empirical threshold value, the water supply safety risk can be remarkably reduced.
Owner:YUNNAN NANFANG INTELLIGENT EQUIP CO LTD

Tail end constant-pressure water supply strategy adjusting method and system based on AI

The invention relates to a tail end constant-pressure water supply strategy adjusting method and system based on AI, and belongs to the technical field of secondary water supply.The constant-pressure water supply strategy adjusting method comprises the steps that the flow of a header pipe and real-time health state data of each running pump are periodically collected; according to the header pipe flow, the dynamic demand lift is calculated, and all feasible pump set combination strategies are generated in combination with the dynamic demand lift and the real-time health state data; the score of each candidate strategy is calculated, the candidate strategy with the highest score is used as a pump set scheduling strategy, the pump with the most matched performance is selected from candidate pump sets corresponding to the pump set scheduling strategy to serve as a frequency conversion main guide pump, and the other pumps serve as frequency conversion auxiliary pumps; according to the set minimum service pressure and the dynamic demand lift, the target pressure of a pump outlet is calculated; and according to the target pressure and the actually-collected pump outlet pressure, the rotating speed of the variable-frequency main guide pump is adjusted. The method has the beneficial effects that the power of the pump set is matched with the actual requirement, so that the operation cost is reduced.
Owner:NANYUAN SMART WATER CO LTD

Cleaning machine

The utility model discloses a cleaning machine, which relates to the technical field of electric appliances and comprises a shell component, a water storage container, a water mixing valve and a water storage component. The shell assembly is used for being installed on a wall face and provided with an upper end, a lower end and a containing cavity limited between the upper end and the lower end. The water storage container is installed in the containing cavity and 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; the water outlet assembly is provided with a water inlet end and a water outlet end, the water inlet end of the water outlet assembly is communicated with the water mixing valve, and the water outlet end of the water outlet assembly is arranged at the upper end of the shell assembly and used for being communicated with the water using end. The cleaning machine can be directly matched with a water supply system to supply normal-temperature water and hot water, and the applicability of the cleaning machine is improved.
Owner:FOSHAN SHUNDE MIDEA WASHING APPLIANCES MANUFACTURING CO LTD +1

Water balance management system for water-saving process

The invention relates to the field of water-saving processes, and discloses a water-saving process water balance management system which comprises a central water supply module which is linked with a pipe network pressure sensor through an adjustable pump station, predicts a water demand based on an LSTM algorithm according to an analysis result of an intelligent control system, and dynamically adjusts the power of the pump station; the regional water supply module is provided with industrial, agricultural and urban life special pipe networks, each pipe network is provided with an electromagnetic flowmeter and an electric control valve, transmission energy consumption is reduced through a pipe network pressure gradient control technology, and real-time data of each pipe network is fed back to the intelligent control system. The water demand is predicted through the central water supply module based on the LSTM algorithm, the pump station power is dynamically adjusted in combination with a pipe network pressure sensor, meanwhile, the regional water supply module utilizes the pipe network pressure gradient control technology and real-time data feedback, the problems of water supply amount and uneven water pressure distribution are effectively solved, and the water resource utilization rate is increased.
Owner:SUZHOU HENGZHENG ENG QUALITY INSPECTION CO LTD

Storage and gradual release of storm water with MMVF

The present invention relates to a storm water management system comprising a first conduit, a storage device, a first well and a valve, wherein the storage device comprises a coherent man-made vitreous fibre module (MMVF module), wherein the MMVF module comprises an upper passage and a lower passage, wherein the upper passage is in fluid communication with the first conduit, and wherein the lower passage is connected to the first well by the valve.
Owner:ROCKWOOL AS

Circulating water-saving device for electroplating production line

The invention relates to the technical field of electroplating water-saving devices, and discloses an electroplating production line circulating water-saving device which comprises a base, the top of the base is fixedly connected with a treatment box, the rear side of the treatment box fixedly communicates with a water inlet pipe, the top of the base is fixedly connected with a water suction pump, and a water outlet pipe is installed at the top of the water suction pump. A motor is fixedly connected to the front side of the treatment box, a first reciprocating lead screw is fixedly connected to the output end of the motor, a cam is fixedly connected to the rear end of the first reciprocating lead screw, an agent box is fixedly connected to the rear side of the treatment box, and a connecting plate is slidably connected to the inner wall of the agent box through a spring. After wastewater is introduced, the baffle is driven by the cam to indirectly discharge chemicals, so that the chemical waste caused by excessive chemicals feeding is avoided, the equipment has a relatively stable environment within the interval time of adding a purifying agent, and the overall stability of the equipment is improved.
Owner:JIANGSU SHUYANG INTELLIGENT EQUIP CO LTD

High-salinity wastewater treatment system matched with production of ethylene oxide and ethylene glycol

The utility model relates to the field of ethylene oxide and ethylene glycol production sewage treatment, and discloses a high-salt wastewater treatment system matched with ethylene oxide and ethylene glycol production for use, which comprises a high-salt regulating tank (22), an anoxic tank (23), a high-salt CBR tank (24), a high-salt ASR tank (25) and a high-salt secondary sedimentation tank (26) which are sequentially connected, and the high-salt secondary sedimentation tank (26) is connected with a final sedimentation tank (27); the sewage treatment system realizes high-efficiency treatment of high-salinity wastewater in ethylene oxide and ethylene glycol production, and is high in treatment efficiency and stable in operation; meanwhile, the reclaimed water recycling system (20) is matched for recycling clean water at multiple positions, so that water is saved, emission is reduced, and the operation cost is reduced.
Owner:ZHEJIANG JUNENG ENVIRONMENTAL ENG CO LTD

Urban and rural water supply intelligent scheduling and monitoring system based on Internet of Things

The invention relates to the technical field of water supply system monitoring and control, and discloses an urban and rural water supply intelligent scheduling and monitoring system based on the Internet of Things. The system multiplexes transient pressure waves generated in the system into detection signals, and performs propagation damping and reflection echo analysis on the same pressure signal sequence from a pressure sensor in parallel, so as to obtain a pressure signal sequence; according to the method, the system can be controlled to obtain physical state information of the pipe network on line, and the information is utilized to update a hydraulic model used for guiding dispatching; through a non-disturbance detection process, information about a pipe network distributed health state and a discrete abnormal point position is obtained at the same time, a basis is provided for a scheduling decision, and thus the operation state of a system is influenced.
Owner:HUANGSHAN HUIRUN WATER ENG TECH CO LTD

Cleaning machine

The utility model discloses a cleaning machine. The cleaning machine comprises a water storage container, a water mixing valve and a water outlet assembly, the water storage container comprises a first water tank and a second water tank, the first water tank is provided with a first water cavity, the second water tank is provided with 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 cleaning machine can be directly matched with a water supply system to supply normal-temperature water and hot water, and the applicability of the cleaning machine is high.
Owner:FOSHAN SHUNDE MIDEA WASHING APPLIANCES MANUFACTURING CO LTD +1

Automatic concrete spraying and curing method for supporting type rigid pipeline

The invention provides an automatic concrete spraying and curing method for a supporting type rigid pipeline, and belongs to the technical field of concrete construction.The method includes the steps that firstly, nozzle arrangement point positions are planned and determined through an intelligent spraying system; then, constructing a supporting system by utilizing a supporting structure and the full-tooth through-wall screw rod; then assembling a water flow output valve, a pre-filter and an intelligent water valve; a PVC rigid trunk line, a quick-connection three-way connector, a nickel-plated copper nozzle and a PE hose branch line are installed, and meanwhile a temperature and humidity sensor network is arranged; then, a concrete humidity diffusion equation is established based on the Fick's law to determine a spraying strategy, system layout is optimized through a double-layer target game model, pipe network hydraulic balance is achieved on the upper layer, and maintenance uniformity is maximized on the lower layer; finally, the spraying system is dismantled after the concrete reaches the design strength, and the problem of maintenance quality differentiation caused by uneven hydraulic distribution of a traditional spraying system is effectively solved.
Owner:CHINA CONSTR EIGHTH BUREAU DEV & CONSTR CO LTD

Recirculating shower system

A recirculating shower system that can supply recirculated water to one or more spray heads to conserve water consumption during use and reduce water pollution. The recirculated water may be combined with fresh water to maintain comfortable conditions of the water being dispensed via the one or more spray heads. The recirculating shower system may include a flow control valve that operates to control the fresh water supply and a recirculation skid that controls the supply of the recirculated-fresh water mixture. The recirculation skid may include one or more inline cleaning devices that are operable to generate cleaned water that can be distributed throughout the recirculated water plumbing for intermittent or periodic cleaning.
Owner:KOHLER CO(US)

Water tank and cleaning machine

The utility model discloses a water tank and a cleaning machine, and relates to the technical field of electric appliances, the water tank comprises a tank body, and a first water cavity and a second water cavity are arranged in the tank body at an interval; the box body is provided with a first water inlet and a first water outlet which are communicated with the first water cavity, the first water inlet is used for allowing external hot water to enter the first water cavity, and the first water outlet is used for outputting the hot water in the first water cavity; the box body is provided with a second water inlet and a second water outlet which are communicated with the second water cavity, the second water inlet is used for allowing external normal-temperature water to enter the second water cavity, and the second water outlet is used for outputting the normal-temperature water in the second water cavity; hot water output by the first water outlet is used for being mixed with normal-temperature water output by the second water outlet, hot water provided by a municipal water supply system can flow into the first water cavity from the first water inlet, the normal-temperature water can flow into the second water cavity from the second water inlet, and the water tank can be directly matched with the normal-temperature water and the hot water supplied by the water supply system. No additional heating device is needed, and the applicability is high.
Owner:FOSHAN SHUNDE MIDEA WASHING APPLIANCES MANUFACTURING CO LTD +1

Secondary water supply pump station remote operation and maintenance method and system based on Internet of Things

The invention discloses a secondary water supply pump station remote operation and maintenance method and system based on the Internet of Things, relates to the technical field of resource management, and realizes accurate identification of'micro water hammer 'implicit disturbance by collecting water supply related data, constructing a disturbance residual factor Dk, judging a water supply state and obtaining a dislocation characteristic index. The problem of missed judgment of short-time and low-amplitude dislocation behaviors in a traditional method is solved, periodic risk fluctuation is quantified through autocorrelation analysis of a time interval sequence, finally, an adjustment strategy is generated in real time in combination with a disturbance countermeasure library and is issued to a main control system, closed-loop control and self-adaptive correction of structural water hammer risks are achieved, and the accuracy of the structural water hammer risk is improved. And the steady-state operation capability of the secondary water supply pump station is effectively improved.
Owner:NANTONG SHIPPING COLLEGE

Bridge pier maintenance device

The utility model relates to the technical field of bridge pier maintenance, and provides a bridge pier maintenance device which comprises two receiving boxes, protective cloth, fixing rings, a moving mechanism, a spraying mechanism and a locking mechanism, the two receiving boxes are rotatably connected, the protective cloth is fixedly connected to the two receiving boxes, the fixing rings are fixedly connected to the two protective cloth, and the moving mechanism is connected with the spraying mechanism. Moving mechanisms are arranged on the two fixing rings and used for driving the fixing rings and the protective cloth to ascend and descend on the pier, spraying mechanisms are arranged on the two fixing rings and used for spraying the pier, and locking mechanisms are arranged on the two fixing rings and the two receiving boxes and used for locking the two fixing rings and the two receiving boxes. By means of the technical scheme, the problems that in the related technology, after water is manually sprayed to the bridge pier, water of the bridge pier can be rapidly evaporated in air, time and labor are wasted, and meanwhile the bridge maintenance efficiency and effect are reduced are solved.
Owner:CHINA RAILWAY JIANAN ENG DESIGN INST CORP LTD

Chromium-containing coating waste liquid and sludge treatment and wastewater recycling system

The invention relates to the technical field of chromium-containing wastewater treatment, and discloses a chromium-containing coating waste liquid and sludge treatment and wastewater recycling system which comprises a chromium-containing waste liquid storage tank, a tail gas absorption tower, an acidification reduction tank, a neutralization tank, a sludge dewatering machine, a sludge drying machine and a spray cooling tower which are connected through pipelines, the acidification reduction tank is connected with a chemical adding control module and a reducing agent liquid preparation tank, the spray cooling tower is connected with the reducing agent liquid preparation tank through a pipeline, high-temperature cured resin is ground through the grinding pump, the problem that Cr < 6 + > is wrapped in large-particle resin and is difficult to be thoroughly reduced is avoided, and the production efficiency is improved. Meanwhile, the acidification reduction tank is connected with the tail gas absorption tower, SO2 gas released in the acidification process is absorbed, direct emission is avoided, the spray cooling tower and the sludge dewatering machine are connected with the sludge drying machine, and hot steam generated by the sludge drying machine can be subjected to spray cooling through filtrate of the sludge dewatering machine; and meanwhile, the mixed filtrate is recycled.
Owner:SHANGHAI WUBAO ELECTROMECHANICAL TECH

Low-salt wastewater treatment system matched with production of ethylene oxide and ethylene glycol

The utility model relates to the field of ethylene oxide and ethylene glycol production sewage treatment, and discloses a low-salt wastewater treatment system matched with ethylene oxide and ethylene glycol production, which comprises a low-salt regulating tank (11), a biological selection tank (12), a low-salt ASR tank (13), a low-salt CBR tank (14) and a low-salt secondary sedimentation tank (15) which are sequentially connected, sludge at the bottom of the low-salt secondary sedimentation tank (15) is connected with a sludge return tank (17); the low-salt wastewater treatment system realizes efficient treatment of low-salt wastewater in ethylene oxide and ethylene glycol production, and is high in treatment efficiency and stable in operation; meanwhile, the reclaimed water recycling system (30) is matched for recycling clean water at multiple positions, so that water is saved, emission is reduced, and the operation cost is reduced.
Owner:ZHEJIANG JUNENG ENVIRONMENTAL ENG CO LTD