839 results about "Pipe water" patented technology

The utility model discloses a pipe size detection mechanism for plastic pipe discharge, which relates to the technical field of pipe detection equipment and comprises a pipeline clamping mechanism, a pipe placing frame, a pipeline outer diameter detection mechanism and a pipeline inner diameter detection mechanism, and the pipeline outer diameter detection mechanism and the pipeline inner diameter detection mechanism are fixed at two ends of the pipe placing frame. The pipeline clamping mechanism is fixed to a power trolley of the track power trolley, a linear track of the track power trolley is located in front of the pipe placing frame, the pipeline clamping mechanism clamps the end of a pipeline, and the pipeline is horizontally placed on the pipe placing frame. According to the utility model, the pipeline clamping mechanism, the pipe placing frame and the track power trolley are combined with the pipeline outer diameter detection mechanism and the pipeline inner diameter detection mechanism, so that the wall thickness and the outer diameter of the whole pipeline can be automatically detected, the detection mode is simple, the detection efficiency is high, and the uniformity of the pipeline size can be detected; the positioning accuracy ensures that the to-be-detected pipeline does not deform and bend, the measurement precision is improved, and the detection effect is good.

The invention discloses a pipeline water pressure test device, and relates to the technical field of water pressure tests. The device comprises a mounting frame, wherein a first mounting plate is rotationally mounted on one side of the mounting frame; the third driving piece drives the connecting rod to slide, fluid shock waves are generated at the end, namely a flow channel, of water in the lower pipeline under the action of the cylindrical block so as to simulate the water hammer phenomenon, a water hammer eliminator is simulated through compressed air in the upper pipeline, water flow in the pipeline is buffered and adjusted, and the water hammer phenomenon is simulated. The influence of the water hammer phenomenon on the pipelines is reduced, after the impact experiment is completed, water injection pressurization can be conducted on the two communicated pipelines through the water injection pipe, air in the pipelines is discharged, then the two pipelines are separated through the plugging piece, and the two pressure detection mechanisms can detect the water pressure in the two pipelines respectively. According to the invention, a fluid shock wave simulation test can be carried out on the pipeline, the loading capacity and the sealing performance of the pipeline can be tested in a static pressurization mode, and the device is convenient and easy to use.

The invention relates to the technical field of water supply network flushing, and discloses a pulse flushing method and system for a water supply network, and the system comprises a collection module which is configured to collect the water quality data of a pipeline before flushing and the water quality data of a pipeline after flushing in a pipe network monitoring area; recording the water quality data of the pipeline before flushing as first pipeline water quality data and recording the water quality data of the pipeline after flushing as second pipeline water quality data; the acquisition module is further configured to acquire the thickness of pipeline sediment in a pipe network monitoring area; the processing module is used for determining initial flushing parameters of the pulse flushing device according to the pipeline pollution degree index and the pipeline sediment thickness; the judging module is used for judging whether the pipe network monitoring area needs to be recharged or not according to the comparison result; and the supplementary flushing module is used for flushing the interior of the pipe network monitoring area according to the supplementary flushing parameters. Through cooperative work of all the modules, the whole pulse washing process is more efficient and controllable.

The embodiment of the invention discloses a feedforward prediction control method and device for a wide-load denitration composite hot water recirculation system. The method comprises the steps of determining an operation working condition mode of a boiler based on obtained real-time load and critical load of the boiler, and determining working medium flow directions of an economizer bypass pipeline and a hot water recirculation bypass pipeline in the composite hot water recirculation system in the operation working condition mode so as to construct a working condition operation model; based on the boiler real-time load, the water cooling wall inlet temperature, the economizer bypass pipeline water flow and the hot water recirculation bypass water flow in the working condition operation model and the feedforward predictive control model, the inlet smoke temperature and the economizer outlet supercooling degree of the composite hot water recirculation denitration system are cooperatively controlled; according to the technical scheme, the accuracy and the flexibility of inlet smoke temperature adjustment of the wide-load denitration composite hot water recirculation denitration system under deep peak regulation can be improved, so that the safety and the stability in the deep peak regulation process of a unit are improved, the system operation efficiency is improved, and the control operation difficulty is reduced.

The invention provides a winter protection device and method for a steel pipe type water level gauge platform, and the protection device comprises a protection steel ring which sleeves a steel pipe and can slide up and down along the steel pipe along with the height of the water level; the outer wall of the protective steel ring is connected with a first floating body, so that the protective steel ring floats on the water surface; the air bag mechanism is arranged on the steel pipe in a sleeving mode and located in the protective steel ring; the air bag mechanism can float on the water surface and can slide up and down along the steel pipe along with the water level change; the air bag mechanism can be inflated or deflated so as to realize volume change; an annular protection area is formed in the area between the air bag mechanism and the protection steel ring, and the air bag mechanism is connected with an inflation and deflation executing mechanism with a controller to achieve inflation and extrusion of the annular protection area. The invention has the advantages of simplicity, high efficiency, low cost and high practicability, and can play a good protection role.

The invention discloses water supply pipeline construction equipment and a construction method thereof, and belongs to the technical field of municipal equipment construction.The water supply pipeline construction equipment is characterized by comprising a supporting frame, the bottom of the supporting frame is connected with a walking mechanism used for driving the supporting frame to move, the supporting frame is connected with a horizontal moving assembly, and the horizontal moving assembly is connected with a vertical moving assembly; the horizontal moving assembly is connected with a butt joint device, the butt joint device comprises a conveying assembly and a clamping assembly, the conveying assembly is connected with the horizontal moving assembly, the clamping assembly is connected with the conveying assembly, the conveying assembly is used for driving the clamping assembly to be close to or away from an installed pipeline, and the horizontal moving assembly is connected with a first positioning device; and the first positioning device is used for positioning the installed pipeline in the horizontal direction, the first positioning device is connected with a second positioning device, the second positioning device is used for positioning the installed pipeline in the vertical direction, the second positioning device is connected with the vertical moving assembly, and the effect of improving the pipeline installation efficiency is achieved.

The utility model relates to the field of ocean engineering, in particular to an underwater hauling device for a submarine pipeline, which comprises a plurality of buoys and a plurality of counterweights, the buoys are arranged at intervals along the length direction of the pipeline, the counterweights are arranged at intervals along the length direction of the pipeline, the buoys lift the pipeline, the counterweights pull down the pipeline, and the pipelines are arranged at intervals along the length direction of the pipeline. The conduit is configured to be suspended in water. According to the underwater hauling device for the submarine pipeline, the pipeline is suspended in water by arranging the buoy and the counter weight, so that the pipeline can be hauled away from the bottom between a floating hauling method and a bottom hauling method, the pipeline is not in direct contact with the seabed and is not influenced by the seabed, and therefore only small hauling force is needed, and the pipeline can be hauled away from the bottom. And the pipeline can be prevented from being affected by surface wind wave flow like a floating dragging method, and the device is simple in structure, convenient to use and good in effect.

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 utility model discloses an electric water heater, which comprises a container, a water inlet pipe, a water outlet pipe, a water inlet pipe, a water outlet pipe and a water outlet pipe, the water inlet pipe is mounted on the joint; the water inlet pipe comprises an outer pipe and an inner pipe, the outer pipe is provided with an outer pipe water outlet, the outer pipe water outlet and at least part of the outer pipe are located in the container, the part, located below the outer pipe water outlet, of the outer pipe is connected with the connector, and the inner pipe extends into the container through the connector through hole. The inner pipe is further provided with an inner pipe water outlet located above the inner pipe water inlet and the outer pipe water outlet, the inner pipe is detachably connected with the connector, and after the inner pipe is detached from the connector, water in the container can flow out through the outer pipe water outlet and the connector through hole. The water inlet assembly provided by the embodiment of the utility model not only has an anti-electricity function, but also is convenient for discharging water in the container through the drain pipe.

An energy-consuming-type water hammer effect eliminating device for a submarine fluid-transposition pipeline, the device comprising a fixing flange (4) and a housing (1) fixedly connected to the fixing flange, wherein a first partition plate (15) and a second partition plate (17) are slidably connected to the inner wall of the housing; a reset assembly (12) for resetting the first partition plate and the second partition plate which have slid is provided in the housing; the first partition plate and the second partition plate divide the interior of the housing into a water storage chamber (7), an air storage chamber (6) and a buffer chamber (5), the water storage chamber, the air storage chamber and the buffer chamber being adjacently arranged in sequence, and the buffer chamber being located at the end close to the fixing flange; the bottom of the buffer chamber is fixedly connected to a water intake plate (8), and the inner side wall of the buffer chamber is fixedly connected to an adjustment plate (9); and the air storage chamber is in communication with a driving chamber by means of a pressure relief pipe (2) therebetween, and a bidirectional pressure relief valve (3) is provided on the pressure relief pipe. The device can linearly and stably eliminate a water hammer effect, and is almost not subject to any wear and tear during the entire elimination process, and the service life of the device can also be prolonged.

The utility model discloses a refrigerant direct cooling and liquid cooling fusion cooling system, and aims to overcome the defects of high energy consumption, poor cooling performance and use cost increase of a cooling system in the prior art. The technical problem is solved through the following technical scheme: the battery pack cooling system comprises a refrigerating system, a water system for cooling a battery pack and a refrigerant direct cooling system, the water system comprises an evaporator, a circulating pump and a pipeline water electric heater, the refrigerating system comprises a liquid storage tank and a condenser; two ends of the liquid storage tank are respectively connected with the condenser and the evaporator, and an electronic expansion valve is arranged between the evaporator and the liquid storage tank; the refrigerant direct cooling system comprises a power module cooling cold plate, an evaporation pressure regulating valve and an electromagnetic valve; one end of the power cooling cold plate communicates with the liquid storage tank, the other end of the power cooling cold plate communicates with the evaporation pressure regulating valve, and the electromagnetic valve is arranged between the power module cooling cold plate and the liquid storage tank; and one end of the evaporation pressure regulating valve far away from the power module cooling is communicated with an air suction pipe of the refrigeration system.

The utility model discloses an underground diaphragm wall joint embedded freezing pipe water stop connector system which comprises a special-shaped water stop steel plate and an embedded reinforcement cage. The special-shaped water stop steel plate is fixed at the joint of the continuous wall, and the middle part of the special-shaped water stop steel plate is a main body steel plate with an X-shaped section; straight steel plates are arranged on the front side and the rear side of the main steel plate respectively and are perpendicular to the guide wall. L-shaped steel plates are arranged on the left side and the right side of the main steel plate respectively, L-shaped inner angles face the main steel plate, L-shaped edges of the left L-shaped steel plate and the right L-shaped steel plate are opposite, a gap is formed between the L-shaped edges of the left L-shaped steel plate and the right L-shaped steel plate, and groove bodies are formed between the left L-shaped steel plate and the main steel plate and between the right L-shaped steel plate and the main steel plate respectively. Reinforcement cages are arranged inside and outside the tank body, and freezing pipes are arranged in the reinforcement cages in the tank body. The reverse buckling structures are formed at the joints through the special-shaped water stop steel plates, the integrity between the underground diaphragm walls is enhanced, and the water stop effect is remarkably 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 invention relates to the technical field of pipeline water pressure testing, in particular to a pipeline water pressure testing device. The device aims at solving the technical problems of monitoring and controlling pressure, temperature and flow in the pipeline water pressure testing process, coping with water flow impact, guaranteeing testing safety and stability and the like. A pressure sensor I, a temperature sensor and a flow sensor I are arranged to collect data, and a data collection and control system receives the data and generates a control instruction to control a pressure pump, a regulating valve and a pressure release valve to work in combination with parameters input by an operator. Meanwhile, a plurality of energy accumulators, buffer units and other components are arranged to stabilize pressure and buffer water flow impact. The device is mainly used for water pressure testing of various pipeline systems, and ensures the pressure resistance and safety of pipelines.

The invention provides a plugging device for a pipeline hydrostatic test and a hydrostatic test method. The plugging device comprises a pipeline; the plugging device is used for sealing the pipeline in the hydrostatic test method and is arranged at the outlet end of the pipeline. The extending end of the hydraulic cylinder pushes the release sealing end to extend out of the sleeve and enter the pipeline, it can be guaranteed that when the release sealing end extends into the pipeline, the servo motor drives the lead screw to rotate, then the lead screw nut continuously moves in the transverse direction of the lead screw, and therefore the release sealing end can be effectively released. The arc-shaped sealing face is pushed to be unfolded in the longitudinal direction of the pipeline, the arc-shaped sealing face can be tightly attached to or press the inner wall of the pipeline, a better contact face is formed, the sealing performance is enhanced, the sealing performance is further improved, and meanwhile high stability can be kept in the high-pressure water pressure test process.

The invention belongs to the technical field of pipeline connection, and particularly discloses a water heating pipe fitting splicing device which comprises a mounting box, a pipe inserting water passing mechanism is arranged on the periphery of the mounting box and used for being communicated with a pipeline to form a passage, and a connecting mechanism is arranged outside the pipe inserting water passing mechanism and used for connecting the pipe inserting water passing mechanism to the mounting box. The connecting mechanism is used for being connected with a water heating pipe fitting, an impurity cleaning mechanism is arranged in the mounting box, the impurity cleaning mechanism is used for cleaning impurities in water, the pipe inserting water passing mechanism comprises a plurality of mounting connecting seats, and the sides, close to the impurity cleaning mechanism, of the mounting connecting seats are fixedly connected to the periphery of the mounting box. Through the arrangement of the pipe inserting water passing mechanism, multiple water heating pipe fittings can be spliced, universality is achieved, different installation conditions can be adapted, the situation that purchasing is needed under the condition that no corresponding splicing device exists is avoided, therefore, time and labor are saved, the pipeline splicing efficiency is improved, and meanwhile the practicability of the device is improved.

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.

The utility model relates to the field of pipeline testing, in particular to a pipeline water pressure sealing performance testing device. The utility model provides a pipeline water pressure sealing performance testing device which can be assembled and disassembled, is simple to operate, and improves the use convenience. A pipeline water pressure sealing performance testing device comprises a base, wheels and the like, front and rear supporting legs are arranged on the lower sides of the left and right parts of the base through threads, the wheels are rotationally connected to the lower sides of the left and right parts of the base, and the wheels are located on the inner sides of the adjacent supporting legs. According to the utility model, the installation sheet is in contact with the pipeline to be tested, so that the rubber pipe and the rubber ring are inserted into the pipeline for installation, the installation sheet is taken down, and then the pressure gauge, the fixing frame, the detector, the indicating lamp, the screw rod, the conical column, the rubber pipe and the rubber ring are taken down, so that water in the pipeline flows out, and the device can be installed and disassembled; the operation is simple, and the use convenience is improved.

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.

Hydro-excavation devices are configured to facilitate a trenchless and non-invasive method of installing a conduit underground. The hydro-excavation devices are configured to be operatively coupled to a pressurized water supply and to utilize pressurized water from the pressurized water supply to excavate a tunnel and pull a conduit into the tunnel. The hydro-excavation devices comprise a nozzle that is configured to be operatively connected to the pressurized water supply and to eject water forward of the hydro-excavation devices to excavate the tunnel. The hydro-excavation devices comprise a locomotion system that is configured to propel the hydro-excavation devices through the tunnel. The locomotion system is configured to be operated utilizing the pressurized water received from the pressurized water supply.

The invention discloses a water ring anti-drag conveying device and method for a thickened oil gathering and conveying pipeline, and the device comprises a water ring forming unit which is disposed at a corresponding position of an inner cylinder at an inlet of the thickened oil conveying pipeline, and is used for providing a water ring required by thickened oil conveying; the spiral guide vane unit is located on the downstream of the inner cylinder and is divided into multiple sections which are arranged at intervals, each section of spiral guide vane has elasticity, the front end is fixed, the rear end is in a free state, and the screw pitch of the spiral guide vane is gradually increased in the thick oil flowing direction. By means of the multiple sections of elastic spiral guide vanes with the screw pitches gradually increased, after a water ring is formed, thick oil-water mixed liquid can make spiral centrifugal movement along the thick oil conveying pipeline, and therefore stable flowing of the water ring is effectively maintained in the long-distance thick oil conveying pipeline; the axial deformation of the elastic spiral guide vane can be changed through the electromagnets arranged at the two ends of the elastic spiral guide vane and the control unit, and the water ring liquid film can be automatically controlled and quantitatively adjusted, so that the required thickness of the liquid film is kept when the thickness of the water ring liquid film tends to be reduced.

The utility model discloses an inner container type water hammer eliminating tank, and relates to the field of pressure pipeline equipment. The water hammer eliminating tank comprises a tank body, a top cover and an elastic inner container, an upper opening in the top of the elastic inner container is concentrically arranged in an upper access hole in the top of the tank body in a sleeved mode, a lower opening in the bottom of the elastic inner container is concentrically arranged in a lower access hole in the bottom of the tank body in a sleeved mode, and a connecting pipe communicated with the lower opening is arranged at the bottom of the lower access hole. By means of the well-designed tank body structure, the elastic inner container structure, the top cover type and the protector configuration, efficient elimination of the pipeline water hammer phenomenon and long-term stable operation are achieved. The water hammer eliminating tank not only has excellent water hammer resistance, but also has the advantages of being long in service life and convenient to maintain, and provides powerful guarantee for safe operation of a pressure pipeline system.

The utility model belongs to the technical field of steam heaters, and discloses a steam heating pipeline and an instant electric steam heater, which comprise a pipe body, one end of the pipe body is provided with a water inlet port, and the other end of the pipe body is provided with a steam outlet port; the pipe body comprises a first spiral pipeline and a second spiral pipeline, and at least one part of the first spiral pipeline is inserted into the second spiral pipeline in parallel in a staggered mode. Through the first spiral pipeline and the second spiral pipeline, at least one part of the first spiral pipeline is inserted into the second spiral pipeline in a staggered and parallel mode, and heating pieces can be arranged in the intersection area and the non-intersection area of the first spiral pipeline and the second spiral pipeline. Heat of the heating piece can be fully transferred to the first spiral pipeline and the second spiral pipeline, water flow can flow through the first spiral pipeline and the second spiral pipeline respectively, the passing distance and the passing time of the water flow are longer, and the water flow can be fully heated and vaporized.

The invention relates to the technical field of data processing, in particular to a data extraction and automatic modeling method and system for a water supply and drainage drawing. The method comprises the steps that the communication condition and internal information of a pipeline and the water flow of the main pipeline are obtained; acquiring upstream and downstream water flow divergence according to height ratios and radiuses of diversion pipelines corresponding to upstream and downstream pipelines connected with the secondary pipeline and the upstream and downstream pipelines, and acquiring a water flow estimated value of the secondary pipeline in combination with the water flow of the upstream and downstream pipelines; acquiring the connected pipelines of the pipelines, acquiring the water flow acceptance of the pipelines based on the water flows of the connected pipelines, and acquiring the water flow trend consistency of the pipelines according to the specification characteristics of all the connected pipelines corresponding to the pipelines; the water flow estimated value and the water flow trend consistency are combined to obtain the water flow pressure representation degree of the pipeline; and marking the data in a model to finish final modeling. According to the application, the water flow pressure condition of each pipeline is displayed, and the improvement and optimization of the model are facilitated.

The invention discloses a pipeline flow measurement method and device for a non-full-flow pipeline, and relates to the technical field of pipeline flow measurement, measurement is carried out through a pipeline flow measurement system, and the pipeline flow measurement system comprises a sonar probe which is arranged in the pipeline and floats on the water surface of the pipeline and a Doppler flow meter which is arranged in a water passing area in the pipeline. The method comprises the steps that a target echo signal, detected by a sonar probe, of a water passing area in a pipeline is acquired, and section contour data and section area of the water passing area are determined according to the target echo signal; performing grid division on the water passing area according to the section contour data to obtain a preset number of grid units, and calculating flow velocity distribution of each grid unit through frequency shift detected by a Doppler flow velocity meter; on each grid unit, the corresponding flow velocity value is multiplied by the area of the grid unit according to the flow velocity distribution, and then summation is carried out to obtain the pipeline flow. The problem that in the prior art, the accuracy is low when the pipeline flow of the non-full-flow pipeline is measured is solved.

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.