460 results about "Pipe water" patented technology

The invention provides a pipeline water hammer monitoring method, device and equipment, and relates to the technical field of oil and gas pipeline monitoring. The method is applied to an SCADA system and comprises the steps that a detected trigger signal of fluid control equipment in an oil conveying pipeline is responded, a pressure signal and a flow signal in the oil conveying pipeline are obtained, and microsecond-level timestamps, corresponding to the trigger signal, of the pressure signal and the flow signal serve as time references; determining physical sparse characteristics according to the pressure signal and the flow signal; and determining whether an event corresponding to the trigger signal is a water hammer based on the physical sparse feature. According to the invention, the accuracy of water hammer positioning is improved.

The invention relates to the technical field of pipeline robots, and discloses a probing robot for automatically recognizing defects of a drainage pipe culvert under the water operation condition. The movement mechanisms cling to the inner wall of the pipeline and are used for detecting the movement of the robot; the rotating mechanism is rotationally mounted on the peripheral side of the robot body; the pressure mechanisms are fixedly mounted on the outer wall of the rotating mechanism, attached to the inner wall of the pipeline and used for collecting pressure value related electric signals; the detection system is mounted in the robot body; the detection system comprises a signal processor module, a wireless transmission equipment module and an infrared camera module; the pressure mechanism, the rotating mechanism and the detection system are matched to realize accurate positioning of defect points on the inner wall of the pipeline. Through combination of mechanical contact type detection and kinematic model positioning, high-precision spatial positioning and identification of the inner wall of the pipeline are realized in a high-turbidity and full-pipe water-carrying environment, and data support is provided for subsequent pipeline maintenance and repair.

The invention discloses a torsion type pipeline water turbine damping grid position adjusting mechanism which comprises a conveying pipeline, a sliding groove module and a movable damping grid. A guide through groove is formed in the conveying pipeline and extends in the conveying direction of the conveying pipeline. The sliding groove module is arranged outside the conveying pipeline, the interior of the sliding groove module is communicated with the guide through groove, a variable-pitch spring is arranged in the sliding groove module, and the telescopic direction of the variable-pitch spring is consistent with the extending arrangement direction of the guide through groove; the movable damping screen is arranged in the conveying pipeline in a sliding mode and provided with a connecting rod and a sliding block. One end of the connecting rod penetrates through the guide through groove and then is connected with a sliding block; the sliding block is fixedly connected with one end of a variable pitch spring; when the movable damping screen is scoured by fluid, the variable-pitch spring provides resistance for the movable damping screen so that the movable damping screen can move to the stress balance position. After the scheme is adopted, the self-adaptive adjustment of the position of the rectifying grid can be realized.

The invention relates to the technical field of heat exchange equipment, and particularly discloses a composite mixed-flow air cooler with a peak device. The device comprises a shell, an induced draft fan, a medium transfer pipe, a water feeding pipe, a first adjusting valve, a water feeding tee joint, a second adjusting valve, cooling filler, an evaporation coil, an evaporation coil adjusting air inlet window, a cooling filler adjusting air inlet window, an air cooler adjusting air inlet window, a medium inlet, a circulating water tank, an air cooler, a fogging bed, an air mixing chamber and a cooling filler water distribution device. And the evaporation coil pipe water distribution device comprises a medium outlet and a water collector. The system has multiple operation modes, such as a peak operation mode, a summer operation mode, a spring and autumn combined operation mode, a water cut-off operation mode and an anti-freezing mode, and can meet different use scenes. And a mixed-flow type drop flow cooling and condensing technology and a condensing, recycling and reheating technology are originally created, so that multiple functions of saving water and energy and eliminating white fog are realized.

The invention provides a quick image recognition method for the water quality condition in a water supply pipeline, and the method is characterized in that a high-definition camera with a light source is used for obtaining a color image in the underground water supply pipeline, the color image is converted into a gray image through an OpenCV method, the gray image is converted into a high-resolution image through a super-resolution method, and the high-resolution image is used for recognizing the water quality condition in the underground water supply pipeline. Carrying out segmentation and feature enhancement on a distribution region of suspended particulate matters in the high-resolution image by applying an average signal-to-noise ratio, a local self-adaptive thresholding algorithm and a denoising algorithm, extracting a region related to a water quality turbidity parameter, comparing a feature region containing the water quality turbidity parameter with a standard water quality turbidity grade image database, and obtaining a water quality turbidity grade image; and judging the turbidity grade of water in the in-service water supply pipeline. According to the invention, rapid identification and real-time monitoring of the pipeline water quality turbidity grade in the water supply network are effectively realized, and a new method is provided for rapid identification and condition monitoring of the water quality of the water supply network.

The utility model relates to the technical field of rubber sealing ring production, and discloses a shaping device for rubber sealing ring production, which comprises a processing table, and a water storage tank is arranged at the top of the processing table; the supporting rod is arranged at the top of the machining table; and the top cover is arranged at the top of the supporting rod. The hydraulic cylinder is started, the hydraulic cylinder operates to drive the heating plate and the upper die block to move, when the upper die block is matched with the lower die block, the heating plate is started to heat the upper die block, so that a gap of a die is tightly filled with a rubber material, after the rubber material forms a required shape, the upper die block and the heating plate are recycled, and the water pump is started again. The water pump operates to suck water in the water storage tank through the water suction pipe, then the water is conveyed into the splitter plate through the water conveying pipe, and the water is sprayed out through the spray head to cool a rubber material, so that the effect of rapidly cooling the rubber sealing ring to maintain the shape and performance of the rubber sealing ring is achieved.

A quick installation structure for a body core with rotatable flexible pipe water pipes includes a body core and at least two water pipes connected thereto. The water pipes include snap grooves and sealing rings. The body core includes at least two pipe holes for water pipes and a gasket insertion groove perpendicular to and communicates with the pipe holes for a gasket Another end of the water pipe is alternatively connected to a nut which includes a smooth section and an end surface beside the smooth section, the water pipes pass through the nut and are restricted by the end surface, the snap groove passes through the nut and is exposed out of the nut, an snap ring is inserted into the snap groove, so that the water pipes and the nut are rotatably connected to the body core without detachment.

The utility model provides a horizontal hoisting device for a large-pipe-diameter concrete pipeline, and belongs to the technical field of drainage pipeline construction. The large-pipe-diameter concrete pipeline horizontal hoisting device comprises a pipe turning hook and lug pins, the pipe turning hook is in a U shape and is used for sleeving the end of a concrete pipeline, the lug pins are installed on the two sides of the concrete pipeline, and the pipe turning hook and the lug pins are connected to a suspension tool through a first steel wire rope and a second steel wire rope respectively. The concrete pipeline hoisting device has the advantage that the concrete pipeline hoisting is safer and more stable.

The invention provides an LNG flexible pipeline water hammer-thermal shock coupling fatigue life evaluation method. The method comprises the following steps that an LNG flexible pipeline three-dimensional thermal-mechanical coupling model is established; transient fluid pressure fluctuation and temperature shock in the valve switching process are simulated, and a time-varying temperature field, a stress field and a crack tip stress intensity factor of the pipeline under the water hammer-thermal shock coupling effect are solved; a low-temperature test system is constructed, simulation results and experimental data are compared, and boundary condition parameters in the LNG flexible pipeline three-dimensional thermal-mechanical coupling model are corrected; cyclic load characteristics in the corrected stress response spectrum are extracted based on a rain flow counting method, and in combination with a corrected EPRG empirical model or an SES model, the accumulated fatigue damage amount of the crack-containing pipeline under the water hammer-thermal shock coupling cyclic load is calculated; and predicting the residual fatigue life of the pipeline. According to the method, the prediction precision of the fatigue life of the LNG flexible pipeline under the complex coupling action of the water hammer and the thermal shock is improved.

The application provides a kind of intelligent water meter based on hydroelectric power generation, belongs to water meter technical field.The intelligent water meter based on hydroelectric power generation includes: water meter body, pipeline water flow power generation module and energy storage module.Water meter body and pipeline water flow power generation module are installed in water supply pipeline.The power output end of pipeline water flow power generation module is electrically connected with the charging interface of energy storage module, and the power supply interface of energy storage module is electrically connected with water meter body.It effectively reduces the dependence on external power supply, and reduces the frequency of manual maintenance, can guarantee the long-term stable operation of water meter, reduces the influence of power failure on water meter operation.

A fast and convenient groundwater sampling device, which relates to a groundwater collection device. It solves the problems of the existing groundwater collection device with complex structure, inconvenient field sampling and low efficiency. The middle part of the connecting rod of the push-pull opening and closing device of the present invention is arranged inside the funnel cylinder and the shower pipe. The shower pipe is arranged at the lower end of the funnel cylinder. The rubber valve is arranged between the shower pipe directly below and the counterweight chassis. The structure of the present invention is reasonably arranged, simple in structure, convenient to carry and store, improves the flexibility and convenience of field sampling work, and the setting of the counterweight chassis, exhaust port and shower pipe water inlet hole is beneficial for the sampling device to quickly sink in groundwater, thereby improving the sampling efficiency.

The present application relates to sewage treatment technical field, especially sewage treatment intelligent monitoring method and system, including: through sensor obtains rainwater collection drainage node's sewage discharge, water quality parameter and drainage point coordinate, and carries out pretreatment. Based on real-time sewage discharge and pipeline design maximum flow rate, the real-time load rate is calculated, the water quality difference between adjacent nodes and the pipeline water quality difference are analyzed, the path distance is calculated combined with the drainage point coordinates, the exponential function is used to comprehensively evaluate the discharge suitability index, the comprehensive dynamic weight is formed by fusing the real-time load rate, and the A algorithm is used to obtain the optimal path. Based on the comprehensive dynamic weight processing conflict, the intelligent selection of the drainage path is realized, and the operation of the drainage network is optimized. The present application optimizes the selection of the discharge path by calculating the water quality difference between the drainage nodes and the pipeline water quality difference, thereby reducing the risk of pollutant diffusion, improving the sewage treatment efficiency and suitability.

The utility model discloses a protection type automobile hub which comprises a hub body, a mounting frame is arranged on the inner wall of the hub body, a spraying pipe is arranged on the inner side of the mounting frame, a plurality of spraying holes are formed in one side of the spraying pipe and distributed in an array mode at equal intervals, a mounting plate is fixedly connected to one side of the mounting frame, and the mounting plate is fixedly connected to the other side of the mounting frame. A water pump is clamped to one side of the mounting plate, the output end of the water pump is fixedly connected with a water conveying pipe, the other end of the water conveying pipe is connected with a water inlet of the spraying pipe, and the other end of the water pump is connected with a water pumping pipe; a protection plate is connected to one side of the mounting frame in a clamped mode, and a plurality of heat dissipation openings are formed in the protection plate. According to the protective automobile hub, the temperature of parts such as the hub is prevented from being too high, thermal expansion of metal materials of the hub is prevented, deformation of the hub is avoided, controllability and stability of an automobile are guaranteed not to be affected, and safety of a user can be protected.

The utility model discloses an energy-saving primary air return air conditioning system based on a cold and heat combined water supply loop heat pump, which is characterized in that water circulation comprises a four-pipe water loop heat pump unit, a reheating heat exchanger, a first control valve, a heat exchange coil, an air supply heat exchanger, a second control valve, a fresh air heat exchanger, a third control valve, an air supply heat exchanger and a fourth control valve; the air circulation part comprises an air exhaust adjusting valve, an air return adjusting valve, a fresh air adjusting valve, an air exhaust fan, a humidifier and an air supply fan. The air-conditioning system has the advantages that cooling capacity in exhaust air can be recycled in summer to remove heat and humidity of fresh air and supplied air, heat in the fresh air and heat in the supplied air are recycled to conduct secondary heating on the supplied air, the requirement for the cooling capacity of supplied air is reduced, and meanwhile energy loss caused by cold and heat offset of a conventional primary air return air-conditioning system is reduced; fresh air and supplied air are subjected to air cooling heat treatment while cold and heat of exhaust air are recycled, supplied air is subjected to secondary heating, the air treatment process of the primary air return air conditioning system is optimized, and energy consumption of a conventional primary air return air conditioning system is reduced.

The present invention relates to the technical field of geological engineering survey equipment, and discloses a single-pipe water-pressure double-water-stop plug device. In the present invention, an upper water-stop plug and a lower water-stop plug are respectively arranged at the upper and lower ends of the water pressure test section. The first capsule and the second capsule are communicated through a connecting pipe, so that the water injection of the two capsules is carried out synchronously, and at the same time, they are attached to the hole wall, and a test section with better isolation effect can be formed, making the measured rock mass permeability coefficient more accurate; by controlling the movement of the support pipe, the inner cavity of the support pipe is communicated with the capsule, and the inner cavity of the support pipe is communicated with the test section pipe, and the two states are positioned and switched through the first annular boss, the second annular boss and the third annular boss, so as to realize the positioning control of the first piston pipe, which is convenient for separately injecting water into the capsule and the test section pipe, reducing the operation difficulty and being simple to operate.

The utility model is applicable to the technical field of pipeline pressure test tools, and provides a pipeline interface sealing water injection pressure test tool, which comprises a bottom plate, vertical plates are arranged at two ends of the top of the bottom plate in a left-right movable manner, a first bearing plate short pipe and a second bearing plate short pipe are arranged on the inner side of each vertical plate, and the second bearing plate short pipe is provided with a water inlet pipe. According to the pipeline interface sealing type water injection pressure test tool, pipelines to be subjected to pressure test are horizontally stacked in the containing box, an arc-shaped feeding plate is driven to ascend, the pipelines ascend to a discharging opening along with the arc-shaped feeding plate, then a material guide plate is rotated to be aligned with a placement seat, a push plate is pushed to push the pipelines out of the discharging opening, the pipelines slide to the placement seat along the material guide plate, and a transverse plate is driven to ascend; the arc-shaped supporting seat receives the pipeline on the placing seat, the first sliding block is driven to slide, the vertical plate is driven to move to the two ends of the pipeline, the bearing disc short pipe is in butt joint with the pipeline, manual carrying and adjusting are reduced, the labor intensity is reduced, the operation efficiency is improved, pressure test failure caused by positioning errors is avoided, and the pressure test success rate is improved.

The invention discloses a floor heating room temperature accurate control system and method based on multiple input parameters, and belongs to the technical field of building energy saving and heating ventilation air conditioning. After user setting parameters, system real-time state sensing parameters and room fixed parameters are obtained for multiple times and temperature difference is judged, three independent neural network models of a neural network algorithm module are called for calculation, and then a pipeline water supply temperature control instruction and a proportional valve opening degree control instruction are output to a heat source and a pipeline proportional valve respectively; the heat source power is controlled based on the pipeline water supply temperature control instruction, and water at the specified temperature is generated through a water mixing valve to be supplied to a floor heating pipeline; controlling the opening degree of a pipeline proportional valve based on the proportional valve opening degree control instruction so as to adjust the flow of the pipeline, and ensuring that the opening degree of the proportional valve is accurate through a sliding mode algorithm; the set target temperature and the set arrival time are fused, staged dynamic control is carried out based on different neural network models, and time-temperature double-target accurate tracking is achieved in floor heating control.

The utility model discloses a corona roller water circulation self-cooling device which comprises a roller body, a heat exchange box, a first circulation pipeline, a second circulation pipeline, a water pump, a water supply pipeline and a water outlet pipeline. A heat exchange plate is arranged in the heat exchange box and divides an inner cavity of the heat exchange box into a cooling cavity and a heat exchange cavity. High-temperature cooling water in the roller body flows into the cooling cavity through the second circulating pipeline, tap water enters the heat exchange cavity through the water supply pipeline, and the tap water and the cooling water exchange heat through the heat exchange plate, so that the temperature of the cooling water is reduced, and the cooled cooling water returns to the roller body again through the first circulating pipeline under the action of the water pump. And the tap water after heat exchange flows out through the water outlet pipeline. According to the corona roller water circulation self-cooling device, tap water is directly used for cooling cooling water, and a cooling tower and a refrigerating machine are not needed, so that the occupied area and energy consumption are reduced; and the tap water after heat exchange can be used for other water equipment, so that waste is avoided.

The utility model discloses a water attack prevention system for an oil conveying pipe, and discloses a water attack prevention system for the oil conveying pipe, which can effectively reduce the safety problem caused by a water attack phenomenon and release pipeline pressure. An oil delivery pipe water hammer prevention system comprises an oil delivery pipe, a pressure relief pipe, a pressure relief tank and an automatic pressure relief valve. One end of the pressure relief pipe is communicated with the oil conveying pipe, and the pressure relief tank is communicated with the other end of the pressure relief pipe. And the pressure relief valve is arranged on the pressure relief pipe. The pressure relief valve controls connection or disconnection of the oil conveying pipe and the pressure relief tank. The opening pressure of the pressure release valve can be adjusted according to requirements. By combining the communication design of the oil delivery pipe and the pressure relief tank, pressure can be released in a graded manner when water attack occurs, pressure shock in the oil delivery pipe is effectively relieved, damage to the pipe body is avoided, and the system safety is improved.

The present invention provides a flow direction control device for a pipeline, comprising a valve cover, a valve and a water inlet and outlet cover; the valve cover and the water inlet and outlet cover are detachably and fixedly connected, the valve is arranged between the valve cover and the water inlet and outlet cover, the valve is rotatably connected to both the water inlet and outlet cover and the valve cover, and the valve is provided with a handle extending outside the valve cover; a communication hole group is arranged on the end face of the valve adjacent to the water inlet and outlet cover, the water inlet and outlet cover is provided with a water inlet through hole and a plurality of water outlet through holes, and the end face of the valve with the communication hole group is in sealing abutment with the end face of the water inlet and outlet cover; a water storage space is hermetically formed between the valve and the valve cover, and the water inlet through hole is communicated with the water storage space; the rotation of the valve is used to switch the communication between the communication hole group and the water outlet through holes, so that the water outlet through holes are communicated with the water storage space in different preset states; the water storage space and the water outlet through holes can be switched in a variety of preset communication states, and it is possible to complete the arbitrary switching of single outlet pipe water outlet, two outlet pipe water outlets or all outlet pipe water outlets, realizing the precise water outlet control of multiple outlet pipes.

The embodiment of the utility model discloses a troubleshooting system for secondary water supply equipment, relates to the technical field of water supply and drainage equipment, and can reduce the cost for monitoring faults of secondary water supply systems in most civil high-rise residences. The device comprises secondary water supply equipment (1), an explosion-proof pipe chip (2), a water supply pipeline (3), an emergency pipeline (4), a water electromagnetic valve group and a flowmeter group, the water supply pipeline (3) and the emergency pipeline (4) are led out from the secondary water supply equipment (1) and are connected to the flowmeter group through the water electromagnetic valve group; an explosion-proof pipe chip (2) is arranged between the electromagnetic valve group for water and the flowmeter group; the explosion-proof pipe chip (1) is used for triggering the electromagnetic valve group for water to switch pipelines, and only one of the water supply pipeline (3) and the emergency pipeline (4) is used for water supply at the same time; the flow of the water supply pipeline (3) is larger than that of the emergency pipeline (4).

The application belongs to the technical field of aero-engines, and particularly relates to a method for controlling water flow of a multi-pipeline ejection pre-cooling system of an aero-engine. The water flow of the multi-pipeline is allocated by a digital electronic controller, and each pipeline is independently controlled. The given value of the water supply is calculated by means of temperature deviation, closed-loop control is realized, and the fitting degree of the water injection amount and the required cooling amount is improved. Through the feedback of the inlet temperature, the dependence on the control accuracy of the water metering valve can be reduced. Even if the metered water is inaccurate, it can be compensated through temperature closed-loop adjustment, the industrial requirements of the valve and the electro-hydraulic servo valve are reduced, and the production cost is reduced.

1. The name of the design product: automatic pipe water pipe storage rack. 2. The use of the design product: for storing water pipes. 3. The design features of the design product: in shape. 4. The picture or photo that best indicates the design features: perspective view.

The invention discloses water quality monitoring equipment for urban water supply, and relates to the field of water quality monitoring equipment.The water quality monitoring equipment comprises a mounting shell and a mounting barrel, the mounting shell is connected to a branch pipe, and a controller and a display screen are connected to the mounting shell; the mounting cylinder is connected to the mounting shell, and a detection cavity communicated with the water supply network is formed in the bottom of the mounting cylinder; according to the water quality monitoring equipment for urban water supply, by arranging the mounting shell, the mounting cylinder, the telescopic rod, the stirring assembly, the pressure adjusting assembly and the detector, when the water quality of a water body in a water supply pipeline is detected, the telescopic rod extends to drive a sealing plate to be opened and closed, so that flowing water in the pipeline is stored in a detection cavity; the water pressure in the detection cavity is adjusted by the pressure adjusting assembly, the water body in the detection cavity is stirred and mixed by the stirring assembly, and then the water quality of the water body in the detection cavity is detected by the detector through the detection head, so that the water quality of the water body in the pipeline is automatically monitored in real time while high-speed flowing water in the pipeline is prevented from interfering with the detection work of the detection head.

This utility model discloses an exhaust structure for a dissolving tank in an alkali recovery boiler, including a dissolving tank shell, an exhaust pipe installed on the dissolving tank shell, an exhaust pipe connecting box inside the dissolving tank, an outlet of the exhaust pipe connecting box connected to the inlet of the exhaust pipe, a grid installed at the inlet of the exhaust pipe connecting box, and flushing pipes installed on both the exhaust pipe connecting box and the grid, with the flushing pipes connected to pipes, allowing water to flow into the exhaust pipe connecting box along the pipes and flushing pipes; when gas passes through the grid, dust and unvaporized liquid droplets in the gas are captured by the grid, purifying the gas discharged through the dissolving tank by using the grid, reducing the dust content of the discharged gas and increasing the dryness of the gas, and the flushing pipes are installed to periodically flush the exhaust pipe connecting box and the grid, reducing the risk of sodium salt caking and corrosion in the exhaust pipe, and improving the continuous operation cycle of the system.

This utility model discloses a device for monitoring water flow velocity and flow rate in pipelines, relating to the field of pipeline water flow monitoring technology. It includes a monitoring body, one end of which is fixedly connected to an installation component. A sealing component is provided on one side of the installation component, and a pipeline body is provided on one side of the sealing component. The installation component includes a first flange, a second flange bolted to one side of the first flange, a positioning bolt inside the first flange, and a nut on the outer wall of the positioning bolt. This device allows the first and second flanges to pass through the positioning bolt and is secured to the outer wall of the positioning bolt with a nut. After initial installation, a baffle on a long bolt connects the first and second flanges, and the baffle is positioned and fixed by tightening the positioning nut to the outer wall of the long bolt, thus improving the fastening and installation of the monitoring body and the pipeline body.

The invention discloses a pressure steel pipe bifurcated pipe hydraulic pressure test monitoring system and method, and relates to the technical field of bifurcated pipe hydraulic pressure monitoring, and the steel bifurcated pipe hydraulic pressure monitoring system comprises a stress measurement module, a pressure measurement module, a data monitoring platform, and a water pump automatic pressurization control module. The stress measurement module is used for measuring the stress of the steel bifurcated pipe according to the stress characteristics of the Y-shaped symmetrical internally-reinforced steel bifurcated pipe, wherein the stress measurement areas of the steel bifurcated pipe are an obtuse angle area, a crescent rib side pipe wall and a crescent rib plate; the pressure measuring module is provided with four steel pipes on the steel branch pipe, and the four steel pipes are communicated to the interior of the steel branch pipe and are respectively a water injection pipe, a water drainage pipe, an exhaust pipe and a pressurizing pipe. Through a hydraulic test, welding residual stress can be redistributed, tip stress and construction additional deformation of the steel bifurcated pipe are eliminated, local peak clipping stress elimination of the steel bifurcated pipe is achieved, and therefore the overall brittle failure resistance and stress corrosion resistance of the steel bifurcated pipe are improved, and safe and stable operation of the steel bifurcated pipe is guaranteed.

The utility model relates to the technical field of ultrapure water equipment, in particular to a pipeline water circulation control device which comprises an operation table and a regulation and control mechanism. The regulation and control mechanism comprises a water storage unit, a main control box and a monitoring assembly, the water storage unit is fixedly connected with the operation table, the main control box is fixedly connected with the operation table, the monitoring assembly comprises a water inlet pipe, a first valve, a water supply pump, a water supply pipe, a water pressure sensor, a flow sensor and an auxiliary part, the water inlet pipe is fixedly connected with the water storage unit, and the first valve is fixedly connected with the water storage unit; the water supply pump is fixedly connected with the operation table, the water supply pipe is fixedly connected with the output end of the water supply pump, the water pressure sensor is fixedly connected with the water supply pipe, the flow sensor is fixedly connected with the water supply pipe, and the auxiliary part is fixedly connected with the water supply pipe, so that the water pressure and flow of pipeline water supply can be monitored in real time, the rotating speed of the water supply pump set is automatically adjusted, and energy consumption is optimized. The water quality stability is improved, and the breeding of bacteria and biological membranes is reduced.

The application discloses a method for over-river pipe water connection and a floating box device in the technical field of over-river pipe construction, and comprises a box body, both ends of the box body along the axial direction are provided with openings for inserting the to-be-connected pipe, a sealing structure is arranged on the periphery of the opening, the box body is provided with an openable and closable sealing window and a submersible pump, and the water inlet of the submersible pump is communicated with the space in the box body. Through optimization of the box body structure, integration of the sealing and positioning functions and simplification of the transportation and assembly process, the problems of water flow interference, poor weld quality, low positioning accuracy, weak adaptability and inconvenient transportation of the over-river pipe water connection welding are solved, the effective of the connection edge amount is realized, and the one-time qualified rate of the weld is improved. The device and the method shorten the connection period, reduce the construction cost and the safety risk, and are suitable for the connection of over-river pipes with different diameters.

The utility model relates to a kind of online liquid cooling constant-temperature thin-walled section shaping device, including base, stand, lower shaping roll and upper shaping roll, upper shaping roll and lower shaping roll structure are same, upper shaping roll includes hollow shaft, shaping roll cover, water collecting tray, water return pipe water inlet joint, water return pipe water inlet joint, stand is equipped with lower bearing seat, stand is equipped with upper bearing seat, water collecting tray is equipped with water return cavity, water collecting tray surface is equipped with water return hole, water return cavity is connected with water return pipe, hollow shaft between water collecting tray is equipped with water inlet hole.The utility model sets up upper shaping roll and lower shaping roll into hollow roll and is connected to circulating cooling system, so that upper shaping roll and lower shaping roll constant temperature in whole shaping process, prevent upper shaping roll and lower shaping roll expansion after temperature rise and cause shaping precision to drop, it is convenient to directly connect extrusion production line of section, reduce process, the design of water collecting tray and hollow shaft ensures that shaping roll cover temperature is uniform, prevent the deformation caused by temperature uneven.