4751 results about "Water delivery" patented technology

The invention provides a buried water delivery pressure steel pipe disease inspection method and system, and the method comprises the following steps: carrying out the time sequence alignment and quality evaluation of multi-source sensor data, such as ultrasonic waves, videos and positions, carrying out the feature extraction and optimization through adaptive filtering and frequency smoothing technologies, and carrying out the partitioning compression storage based on entropy and variability; carrying out decompression and feature reconstruction on the compressed data, carrying out state evolution prediction based on multi-scale state trajectory analysis, and carrying out anomaly detection and classification in combination with a dynamic reference model; health feature vectors are constructed, health state distribution is obtained through nonlinear feature fusion and probability density analysis, deterioration trend prediction is carried out based on environment coupling analysis, risk rating and early warning are carried out by adopting a multi-level dynamic threshold value, and finally a maintenance priority sequence and a maintenance scheme are generated. According to the invention, pipeline diseases can be accurately identified, and detection efficiency and reliability are improved.

The invention discloses a super-long water tunnel defect underwater positioning device and method, and the method comprises the steps: obtaining multi-source sensor data of an underwater vehicle, and carrying out the time synchronization and preprocessing of the data; establishing an acoustic environment feature model, identifying strong reflective identification information, and updating environment parameters; the dynamic weight of each data source is calculated, data consistency check is carried out, and multi-source data fusion is executed; performing trajectory optimization on a fusion positioning result, executing identification point constraint processing, and performing backtracking correction on a historical trajectory; and performing multiple verification and uncertainty evaluation on the positioning result. According to the method, through multi-source data fusion and a multi-level optimization strategy, the problems of multipath effect, thermocline influence, inertial navigation accumulative errors and image quality in a complex underwater environment are effectively solved, and high-precision positioning in the ultra-long water delivery tunnel is realized.

A misting fan includes a fan assembly and a misting assembly. The fan assembly includes a fan housing and a fan blade assembly. The fan housing includes an air inlet guard and an air outlet guard. The air outlet guard includes a mist outlet portion and air outlet vanes, the mist outlet portion includes a mist outlet hole and air outlet holes. The misting assembly includes an atomizing member and a water tank. The water tank includes a main tank body, at least one water delivery pipeline, and an atomizing portion. Liquid in the main tank body is provided to the atomizing member through the at least one water delivery pipeline and the atomizing portion, thereby enabling the atomizing member to spray mist spray formed by atomizing the liquid from the mist outlet hole, and outlet airflow is arranged around the mist spray.

A water injection regulation system for water injection well has a float limiting device (A) provided at a wellhead configured to release and capture a float; a ground water delivery device (B) having an outlet in communication with the float limiting device (A), and is configured to inject water into well through the float limiting device (A); and a plurality of downhole water distribution devices, each arranged in a target layer and outside a sidewall of a water-injection string, and configured to monitor production data of the target layer. The float is configured to receive a water distribution instruction to regulate water distribution of each downhole water distribution device, enter the water-injection string (11) with water flow, and float upwards to the wellhead after completing data collection. Each downhole water distribution device is configured to exchange the production data with the water distribution instruction carried by the float.

The invention discloses a water storage and drainage system capable of keeping slope stability. The water storage and drainage system comprises a water drainage pipe assembly and an automatic water supplementing assembly. The drainage pipe assembly comprises a plurality of transverse assembly type pipes, a plurality of oblique assembly type pipes and a plurality of plastic capillary pipes, the transverse assembly type pipes and the oblique assembly type pipes are perpendicularly communicated in a staggered mode, and the transverse assembly type pipes are communicated with the plastic capillary pipes at the corresponding positions. A sand cushion layer and a perlite layer are laid on the slope surface of the side slope; the automatic water supplementing assembly comprises a water pumping machine, a plurality of water supplementing pipes and a plurality of wireless temperature and humidity sensors. A water outlet of the water pumping machine is connected with the water supplementing pipes through a water conveying pipeline. The water pumping machine is provided with an intelligent automatic sensing system; the water storage and drainage system capable of keeping the stability of the side slope further comprises a plurality of assembly type concrete sash beams laid on the perlite layer, and the water supplementing pipe is connected with the rotating spray heads. A soil dressing layer used for planting cold-resistant water-retaining vegetation is laid in the planting area of the fabricated concrete sash beam. The water content of the side slope can be effectively adjusted and controlled, so that the stability of the side slope is improved.

The invention discloses a long-distance high-pressure water delivery pipeline water hammer and leakage monitoring and positioning test device, which comprises a water tank, a water outlet side experiment unit, a water return side main path experiment unit and a water return side branch experiment unit, and is characterized in that the water outlet side experiment unit and the water return side branch experiment unit are communicated with the water return side main path experiment unit; the water outlet side experiment unit, the water return side main path experiment unit and the water return side branch path experiment unit are all communicated with the water tank. The device solves the problem that tiny leakage is difficult to monitor in the high-pressure water delivery process in the existing related test experiment technology, and the problems that the water hammer experiment signal precision acquisition is insufficient and the water hammer experiment causes impact damage to equipment. The invention further discloses a using method of the long-distance high-pressure water conveying pipeline water hammer and leakage monitoring and positioning testing device.

The invention relates to the technical field of water treatment equipment, and particularly discloses intelligent dynamic water-saving two-stage reverse osmosis water treatment equipment which comprises a treatment pipe, the two ends of the treatment pipe are fixedly connected between two sections of water conveying pipes in a sealed mode through bolts, and the outer surface of the treatment pipe is fixedly sleeved with a baffle ring. According to the intelligent dynamic water-saving two-stage reverse osmosis water treatment equipment, along with continuous upward movement of a driving rod, a sealing disc is driven to move upwards along a sliding rod, so that the water pressure of a cavity above the sealing disc is increased, a reverse extrusion force is generated on a filter plate, and impurities blocked at the filter plate generate a reverse extrusion force; after the filtering disc is dredged, the pressure disc and the sealing disc are reset under the action of elastic force to enable the filtering disc to work again, so that the filtering disc is automatically dredged after the filtering disc is blocked in the water treatment process, and the working time of equipment is greatly prolonged; the problem of insufficient water treatment efficiency caused by frequent cleaning of equipment is avoided.

The invention discloses a wet / dry vacuum cleaner with increased corner cleaning capability, comprising: a floor brush component, the floor brush component comprising a main housing, a clean water tank and a roller brush; a negative pressure suction hole is provided on the main housing, and the rotating roller brush rolls sewage and garbage to the negative pressure suction hole; a water delivery pipeline connected to a diversion component is provided at the bottom of the clean water tank, and a plurality of nozzles are provided on the diversion component, and a water pump delivers water in the clean water tank to the diversion component through the water delivery pipeline and sprays the water to the roller brush through the nozzle; a body component, the body component comprising a main body, a sewage tank and an air extraction device; a negative pressure pipeline is sealed between the interior of the sewage tank and the negative pressure suction hole, and the air extraction device works and generates negative pressure to suck sewage and garbage at the negative pressure suction hole into the sewage tank through the negative pressure pipeline. The clean water tank of the invention is arranged on the floor brush component, which reduces the labor intensity of the user, and the roller brush of the invention is detachably arranged at the front end of the main housing, which greatly increases the cleaning capability at corners.

The invention discloses a vibrating screen type crushing tungsten carbide powder ball mill, and relates to the related field of tungsten carbide powder processing, the vibrating screen type crushing tungsten carbide powder ball mill comprises a support frame, ball milling cylinder bodies and a crushing box, the left and right positions of the inner side of the support frame are rotatably provided with the ball milling cylinder bodies through rotating shaft connecting sleeves, and the crushing box is fixed to the top surface position of the left end of the support frame; the inner side of the rotating gear is fixed on the outer side of the ball milling barrel body; a water outlet of the water tank is connected to the bottom end of the water conveying pipe, and the pressure nozzle is arranged on the outer side of the crushing roller. According to the ball mill for the tungsten carbide powder capable of being crushed in the vibrating screen mode, the water conveying mechanism is arranged, water storage treatment can be continuously carried out on rod pieces of the crushing rollers through the arrangement of the water conveying mechanism, and water spraying dust suppression treatment is carried out on crushed materials through matched arrangement of a pressure nozzle; and in addition, unqualified materials are subjected to secondary crushing treatment through vibrating screen type filtering, so that the working efficiency of the ball milling barrel body can be improved.

The invention provides a seawater cooling control system and method which are applied to the technical field of ocean engineering, and the seawater cooling control system comprises a cooling water well, a first temperature sensor, a water level gauge, a water suction pump, a water delivery pump, a monitoring buoy, a second temperature sensor, a flow meter and a controller. The first temperature sensor and the second temperature sensor monitor the temperature in the well and the coral reef area and the water flow speed of the flow velocity metering area respectively, the water level gauge ensures that the water volume in the well is stable, and data are analyzed in real time through the controller to generate a control instruction. The difference value between the environment temperature and the whitening threshold value, the cooling water temperature in the well and the coral reef flow speed serve as input variables, the flow requirement of the water delivery pump is dynamically calculated through a preset rule base, and self-adaptive adjustment is achieved. Through cooperative feedback of the double temperature sensors, it is ensured that the water delivery temperature is strictly controlled within a coral tolerance threshold value, and heat stress whitening is avoided. Layered water taking is combined with a fuzzy control algorithm, energy consumption is reduced compared with a traditional deepwater extraction scheme, and negative effects of shading measures on zooxanthellae are avoided.

The invention relates to the technical field of water conveying belt machining equipment, in particular to externally-inlaid pipe joint prefabricated water conveying belt forming equipment which comprises an assembly line workbench, a trepanning device and a feeding and fixing cooperation device. The assembly line workbench comprises a plurality of stations, and the water conveying belt moves on the assembly line workbench and is correspondingly machined when moving to a preset station; the tapping device is movably arranged on the assembly line workbench and used for machining mounting holes in the water conveying belt. In the moving direction of the water conveying belt, the feeding and fixing cooperation device is arranged on the downstream of the tapping device and comprises a feeding mechanism and a fixing mechanism, the feeding mechanism is arranged on one side of the assembly line workbench and used for conveying the pipe joint to the position below the fixing mechanism, and the fixing mechanism is arranged on the assembly line workbench and used for fixing the pipe joint. The pipe joint fixing device is used for fixing the pipe joint to a mounting hole, and can further improve the production efficiency of the water conveying belt externally-inlaid pipe joint and improve the product quality.

The present invention discloses a multi-modal system for real-time plant hydration monitoring and irrigation management. The system comprises at least one acoustic sensor configured to emit controlled sound waves through plant tissues and detect corresponding vibrations and resonance frequencies using sensitive microphones or piezoelectric sensors to assess plant hydration. The system includes at least one bioelectrical sensor for monitoring bioelectrical signals. At least one nanotechnology-based sensor is configured to detect molecular changes in water content within plant cells through embedded or externally applied nanosensors. An aerial imaging device mounted on an unmanned aerial vehicle captures data related to canopy temperature, leaf color, and hydration indicators using infrared, multi-spectral, and thermal cameras. A central processing unit receives and analyzes data using predictive models, integrates the data via data fusion algorithm to generate a plant hydration profile, and controls water delivery through an irrigation management unit based on the hydration profile.

The invention provides an intelligent irrigation district management method and system based on the Internet of Things, and the method comprises the steps: obtaining the real-time irrigation water amount and water pump energy consumption data of each water conveyance channel in a target irrigation district; according to the real-time irrigation water amount and the water pump energy consumption data, generating a dynamic water resource supply and demand relation graph; determining a target water delivery channel corresponding to the water resource transaction request of the water consumption terminal of each irrigation area from a target irrigation area, and if any target water delivery channel has a condition that a water pump is overloaded or a deposition diffusion coefficient value is greater than a preset diffusion coefficient threshold value, determining the water resource transaction request of the water consumption terminal of each irrigation area based on a dynamic water price adjustment rule and a dynamic water resource supply and demand relationship graph, generating a water resource transaction price of the target water conveyance channel; and according to the water resource transaction prices of all the target water conveyance channels and the node states in the dynamic water resource supply and demand relationship graph, generating target water conveyance optimization parameters of each target water conveyance channel. The water resource allocation efficiency of the irrigation area and the operation stability of the water conveying system are improved.

The utility model relates to the technical field of food processing, in particular to a food soaking device for food processing, which comprises a soaking tank, a bottom plate arranged below the soaking tank, a water storage tank and a fixed side plate arranged on the bottom plate, a feed pipe and a discharge pipe arranged on the soaking tank, a water pump arranged on the water storage tank, and a water delivery pipe connected to the water pump. The soaking tank is provided with a heating plate and a motor, the motor is provided with a main shaft, the main shaft is provided with a stirring blade, the stirring blade is provided with a germicidal lamp, and the calandria is provided with a valve and a filter screen shell. Small-particle residues in granular bean raw materials are effectively filtered, discharging is carried out in the later period, the purity of finished products manufactured in the later period is improved, the situation that bacteria breed during long-time soaking is avoided, and then the quality of the finished products manufactured in the later period can be guaranteed.

The invention discloses a variable-cross-section stacked box rigid frame aqueduct, a cantilever hanging basket and a prestress tensioning method in the field of prestressed concrete aqueducts, the transverse section of a water passing groove is a U-shaped section, and the U-shaped section of the water passing groove is far superior to a rectangular section in the aspects of water delivery flow conditions and flow passing capacity; a prestress continuous rigid frame structure form of a U-shaped water passing upper tank with a variable cross-section rectangular lower tank stacked upwards and a guide groove unified cross section and a two-system four-way prestress system are arranged, the concrete stress of the upstream face of the U-shaped water passing groove can be accurately and effectively controlled to be kept in a uniform compression state with a certain numerical value, and the anti-seepage and durability functions of the aqueduct are ensured. According to the tensioning method, the vertical steel beams and the U-shaped steel beams are partially tensioned firstly, so that the aqueduct web has certain vertical pressure stress, then longitudinal prestress is tensioned, the effect of the vertical steel beams and the U-shaped steel beams is prevented from being weakened by the longitudinal prestress, and pressure stress reserve of the upstream face of the U-shaped groove is guaranteed; the pouring hanging basket prevents the formwork from floating or shifting in the pouring process of the variable-thickness middle partition plate.

The invention discloses an energy-saving irrigation method for a water conservancy project, and belongs to the technical field of agricultural irrigation. The adjusting mechanism is installed on the water conveying pipe and comprises a movable sleeve part and a third sleeve, the movable sleeve part is rotationally installed on the water conveying pipe, an adjusting part is installed in the movable sleeve part, the third sleeve is provided with an irrigation opening, and the third sleeve is installed on the movable sleeve part in a sliding mode through the adjusting part; the oxygen supply mechanism is arranged in the movable sleeve and comprises a fixing ring, a connecting rod, an air bag and an output pipe, the connecting rod can slide in the circumferential direction of the fixing ring, the connecting rod is sleeved with the air bag, and the output pipe is fixedly connected with the air bag. Water flow enters the movable sleeve and the third sleeve through the space between the sealing block and the sealing ring, the third sleeve moves upwards on the movable sleeve under the jacking action of the movable rod to expose the irrigation opening, and the purpose of irrigation is achieved.

The invention provides a water supply and drainage pressure-bearing combined pipeline, and relates to the technical field of water delivery pipelines, an inner pipeline is arranged in a pipeline inner cavity of an outer pipeline, the central axis of the inner pipeline coincides with the central axis of the outer pipeline, and an interlayer filling space is formed between the pipeline outer wall of the inner pipeline and the pipeline inner wall of the outer pipeline; the connecting structure comprises a plurality of first structure connecting pieces and a plurality of second structure connecting pieces, the first structure connecting pieces are arranged on the outer wall of the inner pipeline, the second structure connecting pieces are arranged on the inner wall of the outer pipeline, and the interlayer filling space between the inner pipeline and the outer pipeline is filled with the filling substance. And the inner pipeline and the first structure connecting piece on the inner pipeline are mutually fixed with the outer pipeline and the second structure connecting piece on the outer pipeline through the filling material. The pipe wall thickness of the water supply and drainage pressure-bearing combined pipeline is smaller than that of a pure steel pipeline, the machining difficulty and the machining cost are lower, the inner diameter can exceed 8 m, and the pipe wall thickness of the inner pipeline and the pipe wall thickness of the outer pipeline are controlled to range from 5 mm to 30 mm.

The invention provides an irrigation district reservoir and canal system water resource joint optimization scheduling method and device based on partition decoupling, and the method comprises the steps: obtaining the topological information of a target irrigation district reservoir and canal system, carrying out the irrigation division, and determining the water supply and demand of a future time period; based on the topological information, aggregating and generalizing each reservoir and channel in the irrigation area reservoir and channel system into a plurality of aggregated reservoirs and aggregated channel systems according to a coupling relationship, and dividing the target irrigation area reservoir and channel system into a plurality of subareas; channel water distribution flow feasible regions of different types of aggregation channel systems are deduced step by step from bottom to top from the last-stage channel; a double-layer water resource joint optimization scheduling model is established, the upper layer takes the maximum sum of the ratio of the water supply amount to the water demand amount of each subarea as the optimization target, and the lower layer takes the shortest water delivery time and the minimum water delivery loss of each subarea as the optimization target; the model is solved, the optimal water supply amount of each partition and the flow of the reservoir and the channel of each partition are obtained, and a scheduling optimization scheme is obtained. The method can maximize the water-saving benefit of the irrigated area.

The invention relates to the technical field of heat exchangers, and particularly discloses an efficient heat transfer device of a heat exchanger for a geothermal source heat pump, which comprises a heat exchanger shell, a water tank and a buried pipe, end covers are installed at the two ends of the heat exchanger shell, and heat exchange pipes are arranged in the heat exchanger shell. A cold source water inlet pipe and a cold source water outlet pipe are arranged on the outer wall of the heat exchanger shell; the water tank is arranged outside the heat exchanger shell; the buried pipe is buried in soil; a heat source water inlet pipe communicated with the buried pipe is arranged on the end cover at one end of the heat exchanger shell, and a heat source water outlet pipe communicated with the water tank is arranged on the outer wall of the end cover at the other end; a water conveying mechanism is further arranged outside the heat exchanger shell. A descaling mechanism is arranged in the heat exchanger shell; in the long-time working process of the heat exchange pipe, the outer wall of the heat exchange pipe is cleaned through the descaling mechanism, water scales on the outer wall of the heat exchange pipe are scraped off, and the heat exchange efficiency is improved.

The invention discloses a water and fertilizer all-in-one machine which comprises an outer frame, a water delivery pump, a fertilizer pump and a machine box are arranged in the outer frame, a barrel is installed in the machine box, a water inlet of the water delivery pump communicates with a water inlet pipe, and a water outlet communicates with the center of the top of the barrel through a first pipe body; a water inlet of the fertilizer pump is communicated with a fertilizer header pipe, a water outlet of the fertilizer pump is communicated with the interior of the barrel body through a second pipe body, the end part of the first pipe body is communicated with a rotating pipe joint, and one end of the bottom of the rotating pipe joint is communicated with a connecting pipe; according to the device, a water source is pumped to the first pipe body and the connecting pipe through the water delivery pump and is obliquely sprayed to the inner wall of the barrel body through the water spraying pipe, meanwhile, the motor is used for driving the water spraying pipe to rotate for spraying, fertilizer residues on the barrel wall and the edge of the screen are effectively cleaned, mixing of the water source and the fertilizer can be completed, and the equipment cleaning efficiency and the water and fertilizer mixing efficiency are improved.

The invention provides a hydraulic ram pump system, comprising: a hydraulic ram pump body comprising a main body pipeline, a water escape valve, a water delivery valve and a pressure tank, the main body pipeline comprises a main body pipe and a third branch pipe which are communicated, the main body pipe is provided with a water inlet, a first interface and a second interface, the third branch pipe is provided with a third interface, the water escape valve is arranged at the first interface, and the pressure tank and the water delivery valve are arranged at the second interface; the piston assembly is hermetically mounted on the third branch pipe in a reciprocating motion manner from the third interface; the piston assembly, the transmission conversion device, the rotation transmission device and a rotor of the power generation device are sequentially in transmission connection, and the transmission conversion device is arranged to convert reciprocating linear movement of the piston assembly into one-way rotation of the rotation transmission device. The rotation transmission device is arranged to drive the rotor of the power generation device to rotate unidirectionally. According to the water hammer pump system, when the water hammer pump body continuously operates, the piston assembly can periodically do reciprocating linear movement, and power generation of the power generation device can be achieved.

The invention belongs to the technical field of cooling towers, and particularly relates to a circulating spraying system and a cooling tower comprising the same, the circulating spraying system comprises a water pipe, a water tank arranged below the water pipe; the pressure control assembly is arranged in the water tank and comprises a sealing block, a connecting ring is arranged on the outer surface of the sealing block, and a connecting hole is formed in the lower surface of the connecting ring. During use, the water pump is started to feed water in the water tank into the atomizing nozzles through the water conveying pipe and the flow dividing pipe. Water flow firstly makes contact with the flow guide strips, impacts the flow guide pieces after drainage and drives the connecting plate and the transmission rod to rotate. The transmission rod penetrates through the first linear bearing and is matched with the second linear bearing to drive the cleaning support to rotate, the first spring buffers, the second spring pushes the cleaning support to enable the cleaning brush to be attached to the inner wall of the nozzle, and the inner wall is cleaned rotationally. After passing through the kinetic energy conversion assembly, the water flow is atomized and sprayed out through the spray orifice plate. The flexible nanofiber brush can remove dirt to avoid blockage, the inner wall is not damaged, and uniform atomization is guaranteed.

The invention discloses a wearable device for lower limb rewarming, and relates to the technical field of medical instruments. The wearable device for rewarming the lower limbs comprises an outer constraint sleeve, an inner constraint sleeve and a mounting box, a heat preservation pipe is arranged between the outer wall of the outer constraint sleeve and the outer wall of the inner constraint sleeve, notches are formed in one side of the outer constraint sleeve and one side of the inner constraint sleeve, a zipper is arranged at the positions, located at the notches, of the outer wall of the outer constraint sleeve, and a puller is arranged on the zipper; a water tank is fixedly connected into the mounting box, a water outlet pipe is connected to the inner wall of one side of the water tank in a penetrating mode, and a water pump is arranged in the mounting box. Through driving of the water pump, purified water enters the heat exchange structure through the conversion pipe to be heated and then enters the heat preservation pipe through the hot water conveying pipe, a closed hot water circulation channel is formed, continuous supply of hot water and rewarming of the lower limbs are effectively guaranteed in a water heating mode, blood circulation is effectively promoted, and postoperation hypothermia is avoided.

The utility model belongs to the field of irrigation, particularly relates to photovoltaic agricultural irrigation equipment, and provides the following scheme aiming at the problems that the existing irrigation equipment is usually single in effect, most of the existing irrigation equipment can only spray and irrigate appointed positions, and the spraying angle is difficult to adjust: the photovoltaic agricultural irrigation equipment comprises a main frame, the main frame comprises a chassis and a hollow column fixedly arranged at the top of the chassis, the top end of the hollow column rotationally communicates with an outer pipe, the top end of the outer pipe fixedly communicates with a communicating cylinder, and one side of the hollow column fixedly communicates with an input pipe; the photovoltaic module is used for collecting energy and rotating the outer pipe, the water conveying pipe is communicated with the input pipe, and then electricity is generated through the photovoltaic module and stored so that a power source can be provided for a follow-up water suction pump and a servo motor; the effect of farmland irrigation is achieved through cooperation of the water suction pump and the servo motor and the irrigation assembly, and the angle of each spray head can be independently adjusted, so that the irrigation range is controlled.

The utility model belongs to the technical field of constructional engineering, and particularly relates to a constructional engineering construction dust falling device which comprises a water conveying pipe installed on a fence and a plurality of atomizing nozzles which are evenly arranged at intervals and connected with a plurality of output ends of the water conveying pipe in a rotating and sealing mode through connecting pipes. The atomizing nozzles are rotationally connected with the mounting frame, the mounting frame is further provided with a driving assembly used for driving the atomizing nozzles to swing in a reciprocating mode along the axis of the connecting pipe, and due to the fact that a certain distance is formed between every two adjacent atomizing nozzles, atomizing water is generally sprayed out in a fan shape; according to the technical scheme, the dust treatment effect is poor due to the fact that the two adjacent atomization nozzles are insufficient in atomization, the driving assembly is additionally arranged and used for driving the atomization nozzles to swing, sufficient atomization can be conducted between the adjacent atomization nozzles, and the dust falling effect is improved.

The invention discloses a pipeline air column transient flow simulation method and system, and relates to the technical field of numerical simulation calculation, and the method comprises the steps: carrying out the equal interval division of a target pipeline according to a predetermined interval, and constructing a pipeline model of a plurality of nodes; different states of fluid in the pipeline are distinguished, and flow and pressure of pipeline nodes under different conditions are calculated through a control algorithm to predict behaviors of the fluid in the pipeline; and analyzing and calculating pipeline target data in future set time according to the constructed pipeline model and fluid behaviors in the pipeline, and performing pipeline gas column transient flow simulation. According to the method, the transient flow problem of the pipeline gas column can be well simulated by considering the gas thermodynamic characteristics, the precision of numerical simulation can be improved by combining a gas thermodynamic characteristic mechanism, possible engineering hidden dangers can be predicted and pre-judged in advance in an engineering design stage, and the safety of engineering design of a water delivery system is improved.

The utility model discloses a water delivery PCCP (prestressed concrete cylinder pipe) fixing device, which belongs to the technical field of PCCP fixing, and comprises an annular steel belt, a locking component, a through hole and a steel wire rope, when the steel wire rope is used for grouting, mortar can be gathered downwards along the steel wire rope by repeatedly pulling the steel wire rope at the two ends of the steel wire rope, and the steel wire rope can be used for fixing the PCCP. Through the arrangement of the through holes, the vibrating effect can be achieved, mortar filling is more uniform, in the repeated drawing process of the steel wire rope, air in the filling gaps can be discharged outwards from the gaps between the through holes and the steel wire rope, mortar filling is more convenient, drawing can be more convenient through the arrangement of the drawing handle, and the practicability is high. And by arranging the sliding wheels, the steel wire rope can be pulled more smoothly when being pulled repeatedly, so that the pulling resistance is reduced, and the operation is more convenient.

The utility model provides a pressure regulating device and a long-distance gravity water delivery system. The device comprises a pressure regulating pipe, an electric regulating valve, an adapter pipe and a monitor, wherein the pressure regulating pipe is used for being communicated with a main water delivery pipe; the adapter pipe comprises a first pipe section and a second pipe section vertically communicated with the first pipe section; the first pipe section is provided with a first pipe opening, and the electric adjusting valve is arranged between the first pipe opening and the pressure adjusting pipe and is in communication connection with the monitor. The second pipe section is provided with a second pipe opening, and the second pipe opening is bent towards the ground and used for being communicated with the atmosphere. A liquid level meter is arranged in the adapter tube and is in communication connection with the monitor; the monitor is used for receiving an alarm signal of the liquid level meter and transmitting the alarm signal to the water delivery control platform, and the water delivery control platform remotely regulates and controls the valve opening degree of the electric regulating valve through the monitor so as to relieve the alarm and achieve pressure regulation of the main water delivery pipe. According to the utility model, accurate voltage regulation is realized, a voltage regulation system can be simplified, and the cost is reduced.

The invention discloses a large-scale water delivery pipe network safe operation evaluation method based on multi-parameter comprehensive analysis. According to the invention, through multi-parameter comprehensive analysis, the safe operation state, including water quality, structure, operation, environment and the like, of the water delivery pipe network can be comprehensively evaluated. Through analysis and visualization of a model output result, a decision maker and related departments can more intuitively understand the safety condition of the pipe network, and a risk early warning system is established according to an evaluation result, so that early recognition and early warning of potential risks are realized, and the risk of accidents is effectively reduced. A neural network machine learning algorithm is adopted to automatically learn weights, and the importance of each index is determined. The method gets rid of the subjectivity of determining the weight depending on expert experience in a traditional evaluation method, so that the evaluation result is more objective and accurate. Through the data-driven evaluation model, the safe operation state of the water delivery pipe network can be reflected more comprehensively, and powerful data support is provided for decision makers.

The invention relates to the technical field of environmental protection engineering construction, in particular to a building construction dust falling device and a dust falling method. The dust falling device comprises a water conveying pipeline with a water conveying cavity and a flow discharging cavity, a spray head communicated with the water conveying cavity, a flow gathering cover arranged on the periphery of the spray head and fan blades arranged in the flow gathering cover. Wherein the water delivery cavity is communicated with the drainage cavity, and a water blocking valve is arranged at the communication position; one side of the fan blade is connected with a driven part located at the communicating position between the water conveying cavity and the drainage cavity. The flow gathering cover has a gathering state and an expansion state used for limiting the water blocking valve. According to the building construction dust falling device and the dust falling method, the water pressure in the water conveying cavity is increased by improving the power of the water pump, and the water pressure is used for driving the flow gathering cover to gather and driving the fan blades to rotate, so that water mist is blown to a construction site. In the process, only the power of the water pump needs to be improved, and therefore the fan blades do not need to be driven in an electric power mode.