358results about "Pumping plants" patented technology

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.

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.

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.

The apparatus comprises a water tank 12 containing a volume of water, an inlet 28 to the water tank for connection to the mains water supply, a mains supply valve 14, an outlet 30 connected to the wat

The utility model provides a water resource recycling device based on agriculture and light complementation. The water resource recycling device comprises a water resource recycling box, an agriculture irrigator, a water resource collecting tank and a photovoltaic module flusher, at least one water resource recycling box is arranged close to the photovoltaic module, a photovoltaic module flusher is arranged at the top of the photovoltaic module, and the water inlet end of the photovoltaic module flusher is communicated with a water conveying pipeline of the water resource recycling box; and a water resource collecting tank is arranged at the bottom of the photovoltaic module, and the bottom of the water resource collecting tank is communicated to the water resource recycling box through a collecting pipeline. According to the utility model, the water resource collecting tank is arranged to collect water for the cleaning assembly and natural rainfall, and the water resource is recycled for daily use of an agricultural-light complementary project through the water resource recycling box, the photovoltaic assembly flusher and the agricultural irrigator, so that the recycling of the water resource of the agricultural-light complementary photovoltaic power station area is realized, and the utilization rate of the agricultural-light complementary photovoltaic power station area is improved. The utilization rate of water resources is increased, and the growth environment of crops under the plate is improved.

A trailer type mobile sanitary apparatus includes a housing that forms an interior space having a flushable toilet and a wash basin. The trailer type mobile sanitary apparatus further includes a wash basin drainage system and a septic tank that is separated from the wash basin drainage system and includes a decomposer configured to separate liquids from solids for a separate discharge. The housing securely positioned on a tray type trailer with a septic tank being formed in the tray type trailer. The tray type trailer further includes a technical room with an electric system and a water supply system.

The utility model discloses a vibration isolating and damping device for a secondary water supply pump room, which relates to the field of medical care equipment, and comprises a fixed support, the fixed support is bent in an n shape along the width direction, a second rubber pillow block is embedded in the fixed support, a plurality of mounting plates for mounting water supply pumps are arranged above the fixed support, and the mounting plates are fixed on the fixed support. A first rubber pillow block is arranged between the mounting plate and the upper end face of the fixed support, a connecting column is connected to the bottom of the mounting plate, and the bottom end of the connecting column penetrates through the top end face of the fixed support, is embedded into a second rubber pillow block and is fixedly connected with an anti-falling plate. The water supply pump mounting support has good vibration isolation and vibration reduction performance, reduces vibration loss in the continuous working process of the water supply pump, prolongs the service life of the water supply pump, and is more suitable for water supply pump mounting support of a secondary water supply pump room.

The earth and rockfill dam upstream face water taking construction equipment under the reservoir water storage condition comprises a water taking device, a plurality of water conveying pipes are connected to the water taking device, flange plates are installed at the two ends of each water conveying pipe respectively, and traction devices are erected outside the conveying pipes; a plurality of buttresses are arranged in the water taking device, a plurality of sliding rails are mounted on the buttresses, a sliding table is erected among the sliding rails, and a submersible pump is fixed above the sliding table; a carrying plate is arranged in the sliding table, a plurality of sliding blocks are installed below the carrying plate, a traction hanging frame is fixed between the rear surfaces of the sliding blocks, connecting blocks are installed on the surfaces of the sliding blocks, a rear shovel supporting block is fixed below the connecting blocks, a shovel plate is arranged in front of the rear shovel supporting block, and a plurality of auxiliary pulleys are installed on the rear shovel supporting block. According to the water taking method, construction is simple and effective, under the water storage condition of the earth and rockfill dam, in combination with the water level change condition from the flood season to the dry season, the earth and rockfill dam upstream face water taking project is implemented in stages, and raw water in the middle layer in a reservoir is obtained by a water plant.

The utility model provides an indirect-cooling circulating water pump house which is characterized in that circulating water pumps are arranged at high positions, a plurality of circulating water pumps and motors are arranged in the circulating water pump house, and a maintenance site is arranged at the end part of the circulating water pump house; a reducer pipe, a pipe joint and an electric butterfly valve are arranged on a circulating water pipe at a water inlet of the circulating water pump; a reducer pipe, a pipe joint and a hydraulic control butterfly valve are arranged on the circulating water pipe at the water outlet of the circulating water pump; a circulating water pump, a motor, a circulating water pump water inlet, a circulating water pump water outlet, a circulating water pipe and valves and accessories on the circulating water pipe are arranged in the pipe ditch; a detachable steel cover plate is arranged at the top of the pipe ditch, the top elevation of the steel cover plate is 0m, the lower parts of the circulating water pump and the motor are arranged in the pipe ditch, and the upper parts are above 0m layers. Maintenance and inspection of operators are facilitated, and cost is saved.

The utility model discloses a long-distance high-pressure pump station water hammer eliminating device, and belongs to the field of energy conservation and environmental protection. The device comprises a water suction pool and a water supply main pipe, the water suction pool is connected with a plurality of water pump branch pipelines, the water pump branch pipelines are identical in design, and an electric gate valve is arranged between the water suction pool and a water pump; a pressure sensor, a heavy hammer type slow-closing check valve, a second electric gate valve and a manual gate valve are sequentially arranged between the water outlet of the water pump and the water supply main pipe; the heavy hammer type slow-closing check valve prevents water from flowing back and eliminates the influence of a water hammer; the second electric gate valve is opened when the water pump is started and closed when the water pump stops working; the manual gate valve is in a normally open state and is closed when being overhauled; a safety pressure relief branch pipe is arranged on the water supply main pipe and flows back to the pump room water suction pool. The water hammer eliminating device is simple in structure and convenient to install, damage of the water hammer effect to equipment such as a pipeline, a valve and a water pump can be effectively reduced, the safety and stability of a water supply system can be improved, the frequency of maintenance and equipment replacement is reduced, and the maintenance cost is reduced.

The utility model belongs to the technical field of water conservancy devices, and particularly relates to an integrated floating type pump station which comprises a floating cylinder and a water pump, the water pump is arranged at the top of the floating cylinder, a trash holding cage is arranged at the bottom of the floating cylinder, the top of the trash holding cage is in extrusion contact with a water inlet in the bottom of the water pump, and a movable plate is arranged in the floating cylinder. The outer side of the movable plate is movably connected with the interior of the floating cylinder, and the inner wall of the movable plate is connected with the outer wall of the water pump. According to the integrated floating type pump station, the pump station can still float automatically after water exists and cannot be silted under any condition, so that the zero-silting function can be achieved, the trash holding cage is arranged below the floating cylinder, the water inlet hole of the trash holding cage is of a circular hole-shaped structure with the diameter of 20 mm, the trash holding effect is extremely good, trash below the water surface is little, blockage cannot be caused under any condition, and the integrated floating type pump station is suitable for popularization and application. Therefore, the zero-blocking function can be achieved, and the working efficiency of the floating type pump station is improved.

The utility model relates to an assembly type water supply inspection well with functions of flood prevention and leakage detection, which comprises a well body and a well bottom assembled with the well body in a plug-in manner, the inner surface of the bottom of the well bottom is arranged to be an inclined plane, and a water collection pit is arranged at the bottom of the well bottom and corresponds to the lower position of the inclined plane; and a liquid level detector for monitoring the liquid level in the sump is also arranged. Water in the well body can be conveyed to the position of the sump at the well bottom through the inclined well bottom, and the water level in the well is monitored in real time through the liquid level detector in the well, so that when the water level in the well bottom reaches a certain height, accumulated water in the sump can be drained out of the inspection well by means of the pump body, and automatic drainage is achieved; and meanwhile, the waterlogging prevention of the road can be realized in rainy days. Moreover, the liquid level detector can monitor the change of the liquid level in real time, so that an inspector can detect whether accumulated water exists in the inspection well or not in real time, and whether the pipeline in the well leaks or not can be judged in time.

The utility model belongs to the technical field of secondary pressurizing water supply equipment, and particularly relates to a secondary water supply pressurizing pump room applied to a high-rise building, which comprises a pump room, a water tank is arranged in the pump room, one side of the water tank is communicated with a municipal water supply pipeline, the other side of the water tank is communicated with the water inlet end of a water pump, and the water outlet end of the water pump is communicated with a surge tank; the surge tank comprises a tank body, round pipes are coaxially arranged at the two ends of the tank body, a capsule body is arranged in the tank body, the two round pipes are communicated with the capsule body through connecting pieces, a pressure cavity is defined by the inner wall of the tank body and the outer wall of the capsule body, an air pipe is arranged on the tank body and communicated with the pressure cavity, and the connecting piece located at one end of the tank body is communicated with the water outlet end of the water pump. The connecting piece at the other end of the tank body is communicated with a user water distribution pipe through a pipeline. According to the utility model, the resident can obtain continuous and stable water flow in the water using process, so that the water using convenience is improved, the water using requirement of the resident is met, and the living quality is improved.

The utility model discloses a water conservancy project pump station structure belongs to water conservancy engineering technical field, and its technical scheme main points include pump station base and pump body, the left side fixed coupling of pump station base top has the filter box, the left side fixed communication of filter box has the water inlet pipe, the right side fixed communication of filter box and the input of pump body, the inside of filter box is provided with filter mechanism, and the front of filter box is provided with limit mechanism, the filter mechanism includes fixed frame, filter screen, sealing washer and baffle, the filter screen fixedly connected in the inside of fixed frame, the front of fixed frame and the back of baffle fixed connection, solved the filter plate and filter screen in the patent proposed when moving upward and drawing out rectangular filter box, the impurity of filter screen surface is easy to scratch with rectangular filter box, causes the impurity to fall into rectangular filter box, and the subsequent problem of inconveniently cleaning the impurity in the inside of rectangular filter box.

The utility model provides a multifunctional water diversion device for water conservancy and hydropower, and belongs to the technical field of water conservancy projects. The multifunctional water diversion device for water conservancy and hydropower comprises a walking mechanism, a water tank, a telescopic frame, a water pumping mechanism and a winding mechanism. The water tank is mounted on the upper surface of the walking mechanism; one end of the supporting frame is hinged to one end of the supporting rod through a hinge. A liquid pumping opening of the water pump is connected with one end of the corrugated pipe, and the other end of the corrugated pipe is communicated with the filter; the water pumping pipe is wound on the surface of the cylinder body, one end of the water pumping pipe is arranged in the cylinder body, and the other end of the water pumping pipe is provided with a filter cylinder. Damage of the water pumping pipe is avoided, the service life is prolonged, the filter cylinder can be suspended in half water by controlling the cylinder body to wind the water pumping pipe, lifting of the filter cylinder is controlled according to the water level change time, sludge and impurities at the river bottom are prevented from being sucked, and the possibility of blockage is further reduced.

The utility model discloses a water storage type pump station silt prevention device which comprises a water storage device, the water storage device is a rectangular cavity with an opening in the top end, a water inlet pipe is fixedly installed on one side wall of the water storage device, a water drainage pipe is fixedly installed on the other side wall of the water storage device, through openings are formed in the two side walls of the water storage device, and the water inlet pipe is communicated with the water drainage pipe. And gate plate sleeves are fixedly welded to the two through openings correspondingly, and gate plates are slidably connected into the gate plate sleeves. The double-end servo motor drives the screw rod to rotate in the forward direction, when the screw rod rotates in the forward direction, the movable rod can be driven to move in the direction from the screw rod to the water storage device, the movable rod drives the flashboards to slide in the flashboard sleeves to the middle of the water storage device through the connecting rod till the two flashboards are attached, and the attached flashboards can separate the water storage device. The sewage suction pump pumps silt deposited at the bottom of the water storage device, disturbance to clear liquid on the upper portion of the flashboard is reduced, and it is guaranteed that the pump station can still operate normally during cleaning.

The invention discloses an integral lifting type water taking system, and relates to the technical field of water taking systems in water conservancy and hydropower engineering, the integral lifting type water taking system comprises a slope rail, the top of the slope rail extends to a catchment channel of a top working platform, and the bottom extends into a water source; the movable pump station is movably arranged on the slope track and can move up and down along the slope track; a plurality of water conveying inclined pipes which are detachably connected in sequence are arranged in parallel to the slope track, a bottom opening of the water conveying inclined pipe located at the bottommost part is connected with a water outlet of a pump machine on the movable pump station, and a top opening of the water conveying inclined pipe located at the topmost part is located above the catchment channel; the lifting mechanism is arranged on the top working platform and can make the movable pump station and the water conveying inclined pipe synchronously reciprocate along the slope track. Operators are prevented from going back and forth between the top platform and the branch pipe platform, time consumption and potential safety hazards on the way are avoided, and meanwhile the pipeline disassembly and assembly efficiency is improved.

This utility model relates to an automatic irrigation device for highway greening, including a water tank; an output pipe is connected to the side of the water tank, and evenly distributed drip nozzles are installed on the outside of the output pipe; a manual valve for controlling the flow of water through the output pipe is also installed on the outside of the output pipe; a drainage mechanism for draining water is installed inside the water tank; compared with the prior art, the beneficial effects of this utility model are: a water tank is set in the center of the green belt, the water tank is connected to the output pipe, and multiple drip nozzles are set on the outside of the output pipe. The drip nozzles are located at the roots of the green trees. Through slow drip irrigation, targeted irrigation of green plants can be achieved, which is conducive to plant absorption and is less likely to cause water to seep into the road surface on both sides. The slow irrigation method can achieve continuous long-term irrigation to ensure normal plant growth.

The invention discloses a water taking device, and relates to the technical field of water taking devices.The water taking device comprises a seawater cabinet, a water taking assembly, a pipeline assembly, a seawater supply pump and a control assembly, the seawater cabinet is used for being installed in a cabin of a floating type platform, the water taking assembly comprises a rotating part and a water taking pipe, and one end of the water taking pipe is arranged in the seawater cabinet; the other end of the water taking pipe is used for stretching into seawater, the rotating part is in transmission connection with the top of the water taking pipe so as to drive the water taking pipe to rotate, the pipeline assembly is used for communicating the seawater cabinet and the seawater fresh water generator, the seawater supply pump is arranged on the pipeline assembly so as to be used for pumping seawater in the seawater cabinet to the seawater fresh water generator, and the control assembly comprises a controller and a flow direction sensor. The flow direction sensor is used for being arranged at the end, stretching into seawater, of the water taking pipe, and the controller is in signal connection with the rotating component and the flow direction sensor. And through closed-loop control of the flow direction sensor and the rotating component, an inlet of the water taking pipe always faces the water flow direction, the effective water taking area is increased, and therefore the water taking efficiency is improved.

The invention relates to the technical field of lifting irrigation pump stations, in particular to an ultra-large water level variable-amplitude layered water taking regulation and control system and method based on multi-parameter feedback. The internal water lifting pipeline system is arranged in the external sleeve system; the modularized pump body mounting unit is arranged at the bottom of the internal water lifting pipeline system; one end of the submersible pump reserved cable and one end of the maintenance cable are fixedly connected with the submersible pump; the layered floating water taking devices are arranged at different elevation positions at intervals along the length direction of the internal water lifting pipeline system; and the rapid maintenance system is arranged at the top of the internal water lifting pipeline system. According to the system, the external sleeve system is obliquely arranged along the bank slope and covers the water level change interval between the lowest water level for many years and the highest water level for many years, so that the system can be suitable for the ultra-large water level variable amplitude reservoir or river channel scene with the water level variable amplitude reaching or exceeding 60 m.

The invention relates to the technical field of water conservancy projects, and particularly discloses a method for calculating the void scale caused by soil loss under a pump station bottom plate and electronic equipment, and the method comprises the steps: determining the maximum water head difference of two sides of a pump station, the soil particle density and the total length of the pump station bottom plate, and estimating the diameter of a gap channel; and carrying out stress analysis on the microcosmic soil particle units on the side wall of the gap channel, wherein the stress comprises effective gravity, drag force, seepage force, lifting force, cohesive force, supporting force, sliding friction force and rolling friction moment. According to the method for calculating the void scale caused by soil loss under the pump station bottom plate, a particle kinetic method is introduced, gap channel water flow under the bottom plate is regarded as pressure pipe flow, particle stress analysis, a sliding / rolling instability mode and a Kolbolok-White formula of a turbulent flow hydraulic transition area are comprehensively considered, and the void scale caused by soil loss under the pump station bottom plate is calculated. The length of the void development channel can be quickly calculated based on engineering parameters, and the void position and the risk range can be determined.

The utility model discloses an integrated outdoor constant-pressure variable-frequency integrated pump station with peak shifting regulation and storage functions, which belongs to the technical field of integrated pumps and comprises a pump station body, a base is arranged at the bottom of the pump station body, support frames are uniformly distributed on the periphery of the pump station body and fixedly connected with the base, and a heat dissipation structure is arranged at the top of the pump station body. A controller is arranged on the pump station body, a refrigeration box is arranged at the bottom of an inner cavity of the pump station body, a plurality of sets of refrigeration grooves are formed in the top of the refrigeration box, the refrigeration box is connected with an access pipe and a discharge pipe, a mounting plate is arranged above the refrigeration box, and a non-negative-pressure tank and a constant-pressure variable-frequency integrated pump assembly are arranged on the mounting plate. The constant-pressure variable-frequency integrated pump assembly is connected with the non-negative-pressure tank, control valves are arranged on connecting pipelines of the non-negative-pressure tank and the constant-pressure variable-frequency integrated pump assembly, the control valves are in telecommunication connection with the controller, and the outdoor constant-pressure variable-frequency integrated pump station has the peak shifting regulation and storage function, is good in heat dissipation effect and effectively prolongs the service life.

The invention discloses a rainwater collection ecological water replenishing system based on a sponge city concept, and relates to the field of rainwater resource utilization and urban ecological restoration, and the rainwater collection ecological water replenishing system comprises a graded water collection unit, an integrated purification water storage unit, a precise water replenishing unit and an intelligent cooperative regulation and control unit, the graded water collection unit comprises a roof water collection module, a permeable pavement water collection module and a greenbelt permeation water collection module which are respectively gathered to a main transmission pipe through transmission branch pipes with electromagnetic control valves; the intelligent collaborative regulation of rainwater dynamic and ecological water demand is taken as a core, and compared with an existing system lacking collaboration, dynamic matching of rainwater collection amount and ecological water supplement amount can be realized through two-dimensional data acquisition and self-adaptive regulation, for example, water collection and diversion are regulated according to rainfall and water storage state in rainy seasons, and rainwater overflow waste is avoided; the water supplementing amount is regulated and controlled according to the ecological water demand priority in the dry season, excessive or insufficient water supplementing is avoided, the rainwater resource utilization efficiency is remarkably improved, and the core demand of'on-demand utilization 'of a sponge city is met.

Based on the reclaimed water low-source high-peak water supply technology under the AI digital condition, the system breaks through the limitation of a centralized water supply mode of a traditional reclaimed water system by surrounding five core functions of multi-water-source collaborative water taking, intelligent pipe network scheduling, distributed water storage adjustment, nearby multi-water-quality water supply and automatic control system linkage; the modular and distributed design concept is innovatively introduced, and the AI algorithm and the Internet of Things sensing technology are combined, so that intelligent linkage and on-demand adjustment of the whole process from water taking, processing, conveying, water storage to water supply are achieved.

The present application relates to the technical field of duckbill valve, and particularly relates to a duckbill valve capable of preventing backflow in opening and closing states and an integrated pump station, wherein the duckbill valve comprises two flat nozzle parts which are mutually at an included angle and an anti-backflow device arranged between the two flat nozzle parts; the anti-backflow device comprises two one-way pressure increasing blocks which are oppositely arranged in the up-down direction and are respectively fixed on the two flat nozzle parts, the one-way pressure increasing blocks extend along the left-right direction, the thickness of the one-way pressure increasing blocks in the up-down direction gradually increases along the front-rear direction from the inlet to the outlet, and the spacing between the two one-way pressure increasing blocks gradually decreases along the front-rear direction from the inlet to the outlet; the anti-backflow device further comprises a separation flow guide assembly which is arranged between the two flat nozzle parts, the separation flow guide assembly is capable of being telescoped, and the separation flow guide assembly is arranged in the left-right direction at intervals. In the case that the duckbill valve is submerged in the river water, the effective impact force of the discharged water flow can prevent the water in the river from flowing into the duckbill valve, and the duckbill valve has good anti-backflow capability.

The utility model discloses a water purifying tank of a nursing machine. The water purifying tank comprises a water tank body, an upper cover and a piston lower cover, a water inlet is formed in the upper portion of the water tank body, the upper cover is connected with the water inlet in a sealed mode, two water outlets are formed in the lower portion of the water tank body, the two water outlets are connected with the piston lower covers respectively, and piston structures are arranged in the piston lower covers. By opening the upper cover, adding water into the water bucket body and designing an inlet and an outlet at two waterway outlets at the lower part of the water bucket to be matched with an external sterilization module and a water pump, efficient water purification and waterway internal circulation can be realized, and an additional water storage bucket does not need to be designed; the bottom water outlet is connected with the piston lower cover, the piston lower cover achieves the function of opening and closing a water path in a non-contact mode, the piston lower cover can be controlled to be in the opening or closing state through the piston, water outlet and water outlet closing of the water purifying barrel can be freely controlled, and a user can conveniently lift water out of a machine to add water.

A method for draining a water supply system onboard an aircraft which supplies water from a central water tank to consumers. Water is supplied by a supply pump from the central water tank through supply lines of a conduit system to consumers. Each consumer is associated with a supply valve for drawing water from the conduit system. The supply lines have a maximum internal diameter of 8 mm or less. The method includes closing the supply valves of all consumers, subjecting the supply lines of the conduit system at the at the supply pump to a draining pressure and sequentially opening the supply valves of all consumers for removing water from the supply lines of the conduit system. A corresponding water supply system and an aircraft are disclosed.

The application relates to an assembled integrated pump house, which comprises a sludge pump, a water pump, a pump house, a crushing assembly, a cleaning assembly, an accelerating assembly and an energy-saving assembly. The sludge pump is installed in the pump house, and the sludge pump discharges sludge in a water source. The crushing assembly is installed in the sludge pump. The accelerating assembly is installed near the crushing assembly. The water pump is installed in the pump house. The cleaning assembly is installed in the water pump. The energy-saving assembly is installed on the top of the pump house. The application solves the problems that the water pump in the pump house is easily blocked by large sludge in the process of conveying water, and the filter device of the water pump needs to be manually cleaned.

The invention discloses a PLC-free programming pump set rotation control method based on a constant-pressure water supply controller, and relates to the technical field of pump set rotation control, and the PLC-free programming pump set rotation control method comprises the following steps: establishing a corresponding adjustment object model for each water pump in a pump set, and configuring a uniquely bound adjustment memory unit for each water pump; in the normal operation stage, only the adjusting memory units corresponding to the water pumps currently participating in frequency conversion adjustment are allowed to participate in adjusting operation; when the pump set rotation judgment condition is met, the controller enters a rotation control stage; and after rotation of the pump set is completed, an initial adjusting state of the new water pump is formed. According to the method, a normal constant-pressure adjusting stage and a pump set rotation stage are clearly distinguished from the control logic level, and adjusting oscillation and frequent large-amplitude speed adjustment at the moment of rotation are avoided. Meanwhile, pump set rotation control traditionally depending on PLC logic and manual parameter setting is embedded into a modeling and state machine control process in the controller, and oscillation is suppressed without conservative strategies such as lowering PID gain and amplifying a proportional band.

The utility model relates to small-sized water supply equipment integrated with a frequency conversion cabinet, which comprises the frequency conversion cabinet and a water supply pump group, the water supply pump group is arranged on a bottom frame by adopting a horizontal multi-stage water pump, the frequency conversion cabinet is fixed on a bracket, the bracket is fixed on the bottom frame, a water inlet pipeline and a water outlet pipeline adopt a lower-in and upper-out mode, and the water inlet pipeline and the water outlet pipeline are arranged at an angle of 90 degrees. The pipe valves are connected through clamp type valves, and a pressure gauge and a sensor are installed on the water inlet pipeline. The water inlet pipeline and the water outlet pipeline are both fixed to the pipeline support, the pipeline support is fixed to the bottom frame, and an air pressure tank connector is reserved in the water outlet pipeline. A heat dissipation part of a frequency converter in the frequency conversion cabinet is externally arranged. The water pump is provided with a temperature sensor. The water supply pump set, the pipe valve, the frequency conversion cabinet and the underframe are integrally designed, the structure is safe and stable, the equipment size is reduced, the occupied area is saved, the cost is reduced, the weight is light, flexible movement and rapid installation can be achieved, the installation cost is reduced, and the whole module is flexibly suitable for various water supply scenes.