489 results about "Sanitary sewer" patented technology

The invention relates to the technical field of sewage treatment, in particular to a sewage treatment process model parameter correction method and system. The method comprises the following steps: acquiring sensing data of a multi-point facility through a sewage treatment sensing network, extracting a topological structure of a sewage pipeline, projecting the data into the topological structure, marking position information, constructing an initial sewage treatment process model based on the information, extracting a sewage data set of a treatment process, and establishing a sewage treatment process model; the system simulates a sewage treatment environment, generates virtual flow field data, tracks particle motion, draws a sedimentation curve and generates particle sedimentation track offset data, obtains morphological parameters of a sedimentation tank, reconstructs the framework of the sedimentation tank, predicts a sedimentation imbalance state, backtracks and analyzes model parameters through an abnormal state, and corrects the model parameters. And generating an optimized sewage treatment process model. According to the invention, the operation efficiency and the treatment effect of the sewage treatment facility are integrally improved, and the intelligent and refined development of the sewage treatment technology is promoted.

The invention discloses a sewage pipeline defect detection method and system based on an improved YOLO11 network. The sewage pipeline defect detection method comprises the following steps that a pipeline CCTV robot is used for collecting a defect image sample in a sewage pipeline; the YOLO11n basic network is improved by using an MSGA module, an AIFI module and a positioning loss function Wise-Inner-IoU so as to construct a sewage pipeline defect model; inputting the acquired defect image sample in the sewage pipeline into a sewage pipeline defect model for training, and performing data enhancement on the acquired defect image sample in real time by adopting a Python library Albumentations in the training process; and inputting the defect target image in the to-be-detected sewage pipeline into the trained sewage pipeline defect model to obtain a defect detection result in the to-be-detected sewage pipeline. According to the method, the detection precision is improved, the capturing capability of target structure information under a complex background and the sensitivity to defects are enhanced, and a better detection effect is achieved.

The invention discloses a concrete sewage pipeline antibacterial anticorrosive coating material and a preparation method thereof, the concrete sewage pipeline antibacterial anticorrosive coating material is prepared from the following raw materials: water, water supply aluminum sludge ash, a water reducing agent, Portland cement, aggregate and antibacterial agents, the antibacterial agents are three antibacterial agents with different representativeness, respectively zinc oxide ZnO, copper phthalocyanine C32H16CuN8 and dihexadecyl dimethyl ammonium bromide C34H72BrN. Compared with a traditional concrete anticorrosive coating material, the prepared antibacterial anticorrosive coating material for the sewage pipeline has the advantages that the water supply aluminum sludge ash modified cement-based material is used as a carrier, and the antibacterial agent is used as a functional component to be doped to prepare a functional antibacterial coating, so that the microbial corrosion resistance and the stability of the coating are remarkably improved, and the antibacterial anticorrosive coating material is green and environment-friendly, and has a good application prospect. The method is low in cost, simple in process and convenient to prepare.

The invention provides a tandem catalytic ozonation sewage treatment system, and relates to the technical field of sewage treatment. The device comprises a treatment assembly, an aeration assembly, a middle assembly, an injection assembly, a lifting assembly, a knocking assembly and an extrusion assembly, the treatment assembly comprises a lower shell, the upper part of the lower shell is detachably connected with an upper shell, the lower part of the upper shell is fixedly connected with a partition plate, the lower shell is provided with a sewage pipeline, and the upper part of the lower shell is fixedly connected with the partition plate. A barometer is mounted at the upper part of the lower shell; the aeration assembly is arranged at the bottom of the lower shell and is used for injecting ozone gas; the middle assembly is arranged on the outer side of the treatment assembly and is used for temporarily storing the high-pressure ozone. By arranging the lifting assembly and the knocking assembly, the knocking assembly can be driven by ozone pressure to knock the aeration disc, so that impurities attached to the aeration disc are vibrated away and taken away by ozone gas, and the aeration disc is prevented from being blocked due to impurity accumulation.

The invention provides a method for automatically identifying leakage points in a closed water test of a sewage pipeline by adopting machine vision. The method comprises the following steps: acquiring multi-modal image information in the pipeline through various sensors; constructing a three-dimensional point cloud model of the inner wall of the pipeline according to the multi-modal image information; obtaining and separating a static background and a dynamic leakage area of the image; acquiring flow velocity field information of the dynamic leakage area through a deep learning identification network; and analyzing and acquiring leakage information by combining the data information set and the flow velocity field information of the three-dimensional point cloud model. According to the method, the static background and the dynamic leakage area are effectively identified and distinguished through fusion analysis of the multi-modal images, so that the influence of environments such as pipeline stains is effectively avoided, leakage information is obtained by calculating the flow velocity field of the dynamic leakage area, and the detection accuracy is improved. Finally, the actual leakage point position of the pipeline is obtained through the image coordinates, and the method has the advantages of being accurate, efficient, convenient and rapid.

The invention relates to the technical field of flow measurement, in particular to a sewage pipeline flow measurement device and method based on dynamic image analysis, and the device comprises a rod body, a control system, a particle release module, a track acquisition module and an image and motion analysis module; the control system is arranged at the top end of the rod body; the track acquisition modules are arranged at the bottom of the rod body; the particle release module is used for storing fluorescent particles and releasing the fluorescent particles into the sewage pipeline to be detected under the control of the control system; the track acquisition module is used for shooting the interior of the sewage pipeline to be detected to obtain an image containing fluorescent particles; the image and motion analysis module is used for analyzing the motion characteristics of the fluorescent particles released in the sewage pipeline to be detected so as to determine the flow of the sewage pipeline to be detected. Thus, the bottom of the device is placed in the sewage pipeline to be detected, the motion characteristics of the fluorescent particles are determined by shooting the tracks of the fluorescent particles, the flow of the sewage pipeline is determined, and the device is efficient, accurate and low in operation difficulty.

The invention discloses plastic pipeline particles prepared from waste incineration fly ash and a preparation method of the plastic pipeline particles. The particles are prepared from the following raw materials in parts by weight: 5-25 parts of PE, 20-100 parts of superfine calcium carbonate, 1-5 parts of needle-like wollastonite, 1-5 parts of chopped carbon fibers, 1-15 parts of rutile type titanium dioxide, 10-75 parts of waste incineration fly ash, 1-20 parts of paraffin, 0.2-5 parts of a coupling agent and 0.5-10 parts of a dispersing agent. The preparation method comprises the following steps: 1, cleaning and airing the fly ash, and crushing and grinding the fly ash into 600-1250-mesh powder P; 2, mixing the powder P with inorganic fillers such as superfine calcium carbonate at a high speed of 100-130 DEG C to obtain a composite filler M; 3, mixing and modifying the filler M with a dispersing agent and a coupling agent at a high speed to obtain modified powder MP; 4, MP, PE and paraffin are mixed and plasticized at a high speed, and single-screw extrusion granulation is performed. The particles achieve fly ash recycling and are excellent in processability, the prepared PE pipeline is high in strength, resistant to corrosion and long in service life and can be used as an industrial or municipal sewage pipeline, and the preparation method is convenient, fast and efficient.

The invention discloses a sewage pipeline flow detection device, and relates to the field of flow detection. The sewage pipeline flow detection device comprises a pipe section type flow meter, the pipe section type flow meter is connected with a sewage pipeline through a flange, an outer clamping type flow meter is installed on the outer side of the sewage pipeline, the pipe section type flow meter comprises a pipe section shell and a control terminal, two sensor shells are arranged on the outer side of the pipe section shell, and the control terminal is connected with the two sensor shells. The interiors of the two sensor shells are each provided with an intrusive sensor, the ends of the intrusive sensors extend towards the interior of the pipe section shell, and the intrusive sensors are connected with an outer wall cleaning unit and an end face cleaning unit. According to the sewage pipeline flow detection device, when the control terminal detects that the detection difference value of the pipe section type flow meter and the outer clamping type flow meter exceeds the preset threshold value, the outer wall and the end face of the intrusive sensor are cleaned, and the detection precision is recovered.

The utility model discloses a sewage pipeline capable of preventing clogging at a bending position, and particularly relates to the technical field of clogging prevention devices, the sewage pipeline comprises a first water pipe, one end of the first water pipe is fixedly connected with a bent pipe, one end of the bent pipe is fixedly connected with a second water pipe, a cleaning mechanism is arranged in the bent pipe, and a water spraying assembly is arranged in the cleaning mechanism. And the cleaning mechanism comprises a rotating shell, rotating columns are fixedly connected to the two sides of the rotating shell, one end of each rotating column is rotationally connected with the bent pipe, and a plurality of scraping plates are fixedly connected to the surface of the rotating shell. According to the utility model, impurities deposited on the elbow pipe can be dredged regardless of the water flow, the pipe wall can be effectively scraped, sludge and solid impurities such as fibers and hairs attached to the pipe wall can be scraped off, the scraper and the interior of the pipeline body can be scoured, and the sludge scraped off by the scraper can be timely flushed away; and the device goes deep into gaps and corners which are difficult to touch by the scraper blade, so that fine particles and viscous substances are dispersed.

The present invention relates to the technical field of experiment apparatuses for concrete wastewater pipe corrosion. Disclosed are a concrete testing apparatus and method based on a load-corrosion coupling effect. The apparatus simulates a real environment for a wastewater pipe on the basis of a load-corrosion coupling effect, and also applies a mechanical load and a chemical corrosion effect to a concrete test block, and accelerates the corrosion of the concrete test block by means of exposing the concrete test block, thereby implementing research on mechanical characteristics of a concrete material under the load-corrosion coupling effect, and providing a sample basis for evaluation in regard to research on aging characteristics of the concrete wastewater pipe. Further disclosed in the present invention is a concrete testing method based on the testing apparatus.

The invention relates to the technical field of air pollution control, and discloses a process for treating odor generated in organic industry by a direct absorption method, which comprises the following steps: S1, feeding odor into cooling and dehumidifying equipment through negative pressure, condensing most of steam in waste gas into water, and recycling condensed water; s2, a fan is arranged on a gas pipeline between cooling and dehumidifying equipment and an absorption tower, the subsequent higher pressure difference can be overcome, and under the low-humidity and low-temperature working condition, the fan feeds gas into the absorption tower; s3, gas enters an absorption tower through a fan, and a gas pipeline arranged at the top of the absorption tower is connected with a chimney for discharging; and S4, discharging the cooling circulating water and the absorption liquid to a sewage pipeline through an overflow port, and sending the cooling circulating water and the absorption liquid to a sewage treatment unit. In the operation process, frequent replacement of adsorption materials or complex equipment maintenance is not needed, the investment of manpower, material resources and financial resources for long-term operation is reduced, and effective treatment of odor can be achieved in the organic industry with low cost.

The utility model discloses a sewage monitoring device for water quality environment management, which comprises a current meter body and further comprises a floating installation mechanism, the floating installation mechanism comprises a U-shaped pipe clamp A, an L-shaped pipe, a vertical guide pipe, a guide pipe, a U-shaped pipe clamp B, a triangular cover, a floating block, a connecting rope and a limiting ring, the current meter body is pressed above a long pipe body of the L-shaped pipe, and the L-shaped pipe is connected with the vertical guide pipe. By arranging the floating mechanism for installing the flow meter body, the floating mechanism can drive the flow meter body to be installed at a sewage pipe and a detection vertical pipe, and when the water level in the sewage pipe changes, a floating block in a triangular cover of the floating mechanism drives an L-shaped pipe and the flow meter body to float and rise and fall in sewage along with the water level; when the water level in the sewage pipe changes, the flow velocity meter body is always in contact with sewage, and the flow velocity meter body can stably monitor sewage flow velocity data in the sewage pipe and transmit the sewage flow velocity data to a monitoring system of a water quality environment manager for water quality environment management analysis.

The utility model relates to water purification technical field discloses a big flow ultrafiltration membrane water purifier with self -cleaning and backwash function, including prefilter and two or more than two parallel connection's ultrafiltration membrane water purifier, water purifier purifying water export is equipped with the three ways, and the three ways are connected with the loose joint and become two water purifier's purifying water cavity intercommunication, and the water inlet and sewage water mouth of water purifier are equipped with control valve and three ways, and the three ways are connected with the loose joint and become water inlet channel and sewage water channel respectively, through closing or opening corresponding water inlet control valve and sewage water control valve, the purifying water of water purifier automatic backwash is carried out to the filter core of another water purifier, and backwash is crossed and is carried out between two or more than two water purifiers, and sewage water pipeline communication is often used water's wash vegetables pool, mop pool, such as toilet equipment, and the function of backwash and sewage water at any time is superimposed, makes filter core more clean, if maintaining properly, the service life of water purifier filter core reaches at least ten years or more.

The invention relates to the technical field of municipal drainage pipelines, in particular to a sewage pipeline structure and a maintenance method.The sewage pipeline structure comprises a pipe body, a first connecting end, a second connecting end, an elastic sealing ring and a locking mechanism, the elastic sealing ring is arranged in an annular groove of the connecting end and provided with a corrugated protrusion and a flow guide groove, and the locking mechanism comprises a locking ring and a locking sleeve; a guide structure, an elastic buckle array and a pressure color-changing anti-skid gasket are arranged; a guide plate with a pressure sensor is arranged in the pipe body, and a reinforcing rib with an access hole is arranged on the outer wall. Reliable sealing, operation state monitoring and convenient overhauling can be achieved, and the safety and maintenance efficiency of a sewage pipeline system are effectively improved.

The invention discloses a treatment device for recovering 1, 3-cyclohexanedione from crystallization centrifugal mother liquor, which comprises a dissolving kettle, a discharge port of the dissolving kettle is communicated with a bleaching kettle, a discharge port of the bleaching kettle is communicated with a washing kettle, a discharge port of the washing kettle is communicated with a crystallization kettle, a discharge port of the crystallization kettle is communicated with a centrifugal machine, and a discharge port of the centrifugal machine is communicated with a drying machine. Solid-phase residues are discharged into a dissolving kettle, deionized water is added, stirring is started, then a proper amount of bromine and hydrogen peroxide are added, and materials in the kettle are heated; and transferring the materials in the dissolving kettle into a bleaching kettle. And after the bleaching agent is treated, the feed liquid in the bleaching kettle body is transferred into a washing kettle. The water-washed feed liquid is layered, a water phase layer enters a sewage treatment system through a sewage pipeline, and an organic phase layer enters a crystallization kettle through a delivery pump. And the cooled and crystallized feed liquid enters a centrifugal machine through a delivery pump. And after separation by a centrifugal machine, drying a solid-phase part by a drying machine, and packaging. In order to overcome the defects in the prior art, 1, 3-cyclohexanedione is recycled through the recycling device, pollution to the environment is reduced, and resource waste is avoided.

The invention relates to a device for the rehabilitation of the outlet area (20) of an inlet pipe (2) opening into a walkable sewer pipe (1), comprising an annular flexible pressure plate (5) for applying to an inner surface (10) of the sewer pipe (1) surrounding the outlet area (20) of the inlet pipe (2) and a sealing bladder (4) intended for insertion into the inlet pipe (2) and temporarily expandable, which has a tensioning device at an end (40) not pointing into the inlet pipe (2), by means of which a pressing force can be generated on the pressure plate (5) in the direction of the inner surface (10) of the sewer pipe (1), wherein the pressure plate (5) has at least one injection opening (52) extending through the pressure plate for a filling material.

The present invention discloses a concrete test device and method based on a load-corrosion coupling action, relating to the technical field of corrosion experimental devices for concrete sewage pipelines. The device simulates a real environment of a sewage pipeline based on the load-corrosion coupling action, applies mechanical load and chemical corrosion effects to a concrete specimen simultaneously, and accelerates a corrosion effect on the concrete specimen by exposing the concrete specimen. According to the device, researches on mechanical properties of a concrete material under the load-corrosion coupling action are realized, and an assessment sample basis is provided for researches on aging characteristics of the concrete sewage pipelines. The present invention further discloses a concrete test method based on the aforementioned test device.

The utility model discloses a kind of municipal rainwater and sewage pipeline anti-seepage structures, it includes: outer sleeve, the outer sleeve outside fixedly connected two tenons, two The tenon is symmetrically arranged in the horizontal two sides of outer sleeve, the inner sleeve of the outer sleeve is sleeved, the rubber pad is fixedly connected in the outer sleeve, three valves are fixedly connected in the rubber pad, the outer sleeve outside is sleeved first sealing ring, the left of the first sealing ring is provided with third sealing ring, the inner surface of the third sealing ring is fixedly connected with the outer sleeve, the sealing property of pipeline connection is improved by three valves in the outer sleeve and two sealing rings outside the inner sleeve, and two tenons outside the outer sleeve facilitate the loading and unloading of inner sleeve and outer sleeve.

This invention relates to the field of sewage pipeline technology and discloses a support device for the installation of municipal sewage pipelines. It includes several adjustable support mechanisms that allow for the tilting and docking of plug-in cement pipes. A hoisting mechanism is provided on the main support frame, and an angle adjustment mechanism located inside the main support frame is connected to the end of the hoisting mechanism. The angle adjustment mechanism is equipped with a fixing mechanism that can secure the plug-in cement pipes. Compared with existing technologies, this invention has the advantage that by setting several adjustable support mechanisms to assist in the installation and docking of plug-in cement pipes, the plug-in cement pipes can be tilted to a certain angle under the drive of the angle adjustment mechanism. Furthermore, during installation and docking, the plug-in cement pipes are tilted and docked, and after docking, they are simultaneously placed in a predetermined position. This solves the problem in existing technologies where it is impossible to directly install plug-in cement pipes of the original size, and also eliminates the need for building materials for observation wells.

The present invention relates to the technical field of sewage discharge, and specifically relates to a municipal sewage pipe. A liquid discharge pipe is communicated with the side of the main drain pipe, and a material discharge pipe is communicated with the side of the main drain pipe. The material discharge pipe is located at the bottom of the liquid discharge pipe. A filter disc is installed at each part of the connection between the liquid discharge pipe and the main drain pipe. The bottom of the main drain pipe is fixedly connected with a chassis, and the bottom of the chassis is fixedly connected with a pipe base. The pipe base is fixedly connected to the side of the waste box. The top of the chassis is fixedly connected with a telescopic pipe, and a return spring is installed inside the telescopic pipe. The top of the telescopic pipe is fixedly connected with a weighing inclined plate, and the weighing inclined plate is inclined towards the liquid discharge pipe. Through the main drain pipe and its internal mechanism, the particulate matter in the sewage can be filtered and discharged into the interior of the waste box. By setting the waste box and its internal structure, it is convenient to store the particulate matter and convenient for personnel to handle, without the need for frequent handling.

The utility model relates to the technical field of sewage treatment, and discloses an overwater sewage pipeline system which comprises a precast pile, a packaging block, a sewage main pipe, a plurality of sewage branch pipes and a plurality of outdoor pipes. A through hole is formed in the encapsulation block, the encapsulation block is arranged on the upper end face of the precast pile through a leveling layer, and the leveling layer is used for adjusting the elevation of the encapsulation block; the sewage main pipe penetrates through the through hole, a buffer gasket is arranged between the sewage main pipe and the through hole, and the sewage main pipe is obliquely arranged; the sewage branch pipe is communicated with the sewage main pipe through a maintenance tee joint; one end of the outdoor pipe is used for receiving sewage discharged by the village, and the other end of the outdoor pipe is communicated with the sewage branch pipe. In the using process of the sewage pipeline system, under the conditions that the precast pile sinks and the sewage main pipe is subjected to buoyancy, the buffering gasket plays a buffering role, and the risks of deformation and damage of the sewage main pipe can be reduced.

The utility model relates to box culvert technical field especially a kind of flow box culvert reconstruction flow guide structure, including box culvert roof and box culvert floor, the entrance of box culvert floor top is built with water retaining weir, water retaining weir's front side is placed with submersible pump, the water outlet of submersible pump is equipped with flow guide pipe, the right side of box culvert floor top is built with water retaining wall, water retaining wall's right side and box culvert floor between are equipped with water pipe support, the side wall of box culvert roof is equipped with angle steel support, the top of angle steel support is laid with ventilation hose. The water outlet of submersible pump is connected into flow guide pipe and along water pipe support laying is drained, and the right side of newly-built sewage pipeline away from box culvert is built to form box culvert internal flow guide channel drainage, according to different needs using upper drainage tube and lower drainage tube to drain, orderly drainage is taken in different drainage mode, improve drainage efficiency, ensure that construction area is dry.

The invention belongs to the technical field of municipal sewage treatment and environmental pollution control, and particularly relates to a system and method for controlling harmful gas in a sewage pipeline based on nitrate coupled waste iron ore. According to the technical scheme, the system for controlling the harmful gas in the sewage pipeline based on coupling of the nitrate and the waste iron ore comprises a nitrate storage tank, a waste iron ore powder storage tank, a mixer and an adding device, the nitrate storage tank and the waste iron ore powder storage tank are connected with the mixer through pipelines, and the mixer is used for mixing chemicals; the mixer is used for adding chemicals into the sewage pipeline through an adding device. According to the system and the method for controlling the harmful gas in the sewage pipeline based on the coupling of the nitrate and the waste iron ore, through the coupling effect of the nitrate and the waste iron ore, the activity of anaerobic harmful flora is inhibited, the generation of H2S and CH4 is reduced, and the cyclic utilization of waste resources is realized.

The present invention provides a sewage precise dosing mixing treatment device and a control method, the sewage precise dosing mixing treatment device comprises: a dosing module for adding a medicament into a sewage pipeline; the on-line detection module comprises a first on-line detection module and a second on-line detection module, and the first on-line detection module is arranged at the upstream of the dosing module and is used for detecting water quality parameters of the sewage in real time; the second online detection module is arranged at the downstream of the dosing module and is used for detecting water quality parameters of the sewage after dosing in real time; the mixing strengthening module is arranged between the chemical adding module and the second online detection module and is used for promoting mixing of the chemical and the sewage; the circulation control module is in communication connection with the online detection module and is used for judging a treatment result according to the water quality parameters and enabling the sewage to flow back to the upstream of the dosing module for retreatment when the result does not reach the standard; the device is high in mixing efficiency and dosing precision, has a closed-loop control mechanism, and is good in equipment maintainability.

The utility model belongs to the technical field of building drainage, and particularly relates to a high-rise public building drainage structure comprising hotel functional areas. The hotel functional area comprises a functional area and a guest room area, the guest room area is provided with floors of a plurality of guest rooms, a toilet of each guest room is provided with a drainage pipeline, the drainage pipelines of all the guest rooms converge at the lowest equipment conversion floor of the hotel guest room area to form at least three convergence areas, and each convergence area is connected with a sewage pipeline; a drainage pipeline of a toilet of a guest room is connected to the drainage transverse pipe, and an annular ventilation pipe is arranged between two sanitary ware of a drainage point of each toilet of the guest room on the floor. And the three confluence areas are provided with a common breather pipe. The utility model has the advantages that: 1, the water consumption of the kitchen and the water consumption of the toilet are reasonably superposed, so that the drainage requirement can be met in the water consumption peak period; and 2, the drainage effect of the drainage transverse pipe is effectively ensured, the blockage problem is avoided, and the smooth operation of the whole drainage system is facilitated.

The invention discloses a boiler drum waste water recovery system, comprising a waste water tank, one end of which is connected to the drum, the other end of which is connected to a waste water cooler through a waste water pipe, the outlet end of the waste water cooler is connected to a ditch through a pipeline, a first stop valve, a pneumatic interlock regulating valve and a second stop valve are sequentially arranged on the waste water pipe, a first pipe is connected to the waste water pipe behind the pneumatic interlock regulating valve, the other end of the first pipe is connected to a pneumatic pump, the device air is delivered to the pneumatic pump through an air intake pipe, a second pipe is connected above the pneumatic pump, and the other end of the second pipe is connected to an external condensate pipe network through an external condensate delivery pipeline. The first pipe of the invention is led out from behind the pneumatic interlock regulating valve, which ensures that the waste water flashes to recover steam on the one hand, and avoids the situation of cross pressure in the pipeline on the other hand; the waste water is pressurized by the pneumatic pump, and the waste water is recovered, so as to save production costs and reduce resource waste.

The present application relates to the technical field of sewage treatment, and particularly relates to a method for evaluating purification efficiency of urban sewage pipeline. Based on the topological structure and historical operation data of the target sewage pipeline network, the key internal nodes are selected and the monitoring points are arranged through in-situ process sensitivity sorting; the concentration data of the reference water quality indexes of all water quality monitoring nodes and the hydraulic flow velocity data between adjacent nodes are synchronously collected within a preset evaluation period; based on the above data and in combination with the geometric parameters of the pipeline, the purification efficiency of each pipe section is characterized and quantified to generate a pipe section purification characteristic data table; the dynamic simulation and spatial interpolation of the internal purification process of the pipeline network are performed to generate a dynamic quantification atlas; based on the atlas and the characteristic data table, the pipe section efficiency is evaluated, and the abnormal cause analysis is performed in association with the sensitivity characteristics of the key internal nodes. The multi-dimensional dynamic correlation of the in-situ purification process inside the pipeline network is described and visualized, and the fine and intelligent level of the pipeline network management is improved.

The invention discloses a complex underground pipeline raining sewage pipeline replacement construction method which comprises the following steps that existing municipal wells are used as operation space, and to-be-replaced pipeline sections located between the existing municipal wells are demounted in a segmented mode; after the old pipeline with a certain length is dismantled every time, an annular supporting steel plate is installed at the position of the section so as to support the soil body exposed after dismantling; and repeating the step of dismounting and mounting the annular supporting steel plate in sections until the to-be-replaced pipeline section is completely dismounted and supported by the annular supporting steel plate.

The utility model provides a device for dredging a sewage pipe, which comprises a second switching part, the input end of the second switching part is externally connected with a high-pressure water pump through a pipeline, the second switching part is provided with a first output end and a second output end, the first output end is connected with a first connecting pipe, the second output end is connected with a second connecting pipe, and the second connecting pipe is connected with a second connecting pipe. The other end of the first connecting pipe is connected with a first through connection part, the first through connection part is connected with a water spraying head, the other end of the second connecting pipe is connected with an operation handle, and the first connecting pipe is provided with moving wheels. The device is small in size and can be applied to a narrow space.