100 results about "Pigging" patented technology

The invention discloses an oil pipeline simulation analysis system, relates to the technical field of oil pipelines, and provides accurate data support for subsequent dynamic monitoring and pipeline cleaning decision by constructing a three-dimensional visual model and identifying wax precipitation temperature and deposition risk in time. Through the risk identification module, the system can analyze and calculate the wax precipitation temperature based on the oil product attribute data obtained in real time, and timely judge whether the deposition risk exists in the oil pipeline or not. After receiving a dynamic tracking instruction, the dynamic analysis module can obtain the deposition thickness of each position in a pipeline in real time and analyze the influence of oil temperature and flow velocity changes on deposition distribution, the analysis provides important input data for the pipe cleaning module, the deposition thickness and a heat loss coefficient are fitted through a deep learning technology, and the deposition thickness and the heat loss coefficient are matched with each other. The system may automatically calculate a delivery stability score. When the conveying stability score exceeds a set threshold value, the system can automatically start a pigging measure execution mechanism.

The invention relates to a slurry pipeline ball pushing system and method. The pipeline cleaning device comprises a ball serving device, the ball serving device comprises a ball pushing device, a ventilation device and a cleaning device, the ball pushing device is used for pushing pipeline cleaning balls into a conveying pipeline, the ball pushing device and the conveying pipeline are in interference fit, the ventilation device pushes the pipeline cleaning balls to move in the conveying pipeline through compressed air, and the cleaning device is used for cleaning and blow-drying the pipeline cleaning balls; the closed ball changing device is detachably connected to the conveying pipeline; the detection device comprises a detection cavity, and when the pipeline cleaning balls enter the detection cavity, the detection device judges whether the pipeline cleaning balls are damaged or not in an air pressure detection mode; and the ball receiving device is used for receiving the pipeline cleaning balls, can reversely push the pipeline cleaning balls back to the ball serving device, and can push the pipeline cleaning balls into the closed ball changing device when detecting that the pipeline cleaning balls are damaged. The pipeline cleaning efficiency is improved, and the service life of the small pipeline cleaning balls is prolonged.

The anti-freezing and anti-blocking heat-preservation pigging and watering combined wellhead device comprises an oil inlet pipe, the top of the oil inlet pipe penetrates through a placing base and is connected with the lower end of the middle of a U-shaped pipe, the two ends of the U-shaped pipe are connected with the two sides of the lower end of a quantitative box, and a liquid drainage pipe is installed in the middle of the rear side of the quantitative box; a watering mechanism and an electric control device are installed at the upper end of the placing base and located on the two sides of the protection box correspondingly, the watering mechanism is connected with an oil inlet pipe, and meanwhile a cleaning mechanism is arranged in the oil inlet pipe. According to the anti-freezing and anti-blocking heat-preservation pigging and watering combined wellhead device, the first driving motor drives the rotating shaft, the threaded barrel and the scraper to rotate, the scraper scrapes the interior of the oil inlet pipe, thick oil in the oil inlet pipe is fully mixed and diluted with hot water, and the later oil extraction efficiency is improved; the diluted oil is filtered through the filter plate, impurities are prevented from entering the pipeline to cause blockage, the filter plate is cleaned through the cleaning brush, filter holes are prevented from being blocked, and the use practicability is improved.

The invention discloses a fuel gas system management method and system based on data analysis, and belongs to the technical field of fuel gas system management.The fuel gas system management method comprises the steps that a wax deposition kinetic model and a deep neural network are combined, and a hybrid prediction model architecture is designed; the wax deposition kinetic model is used for describing physical and chemical processes of wax deposition and providing basic prediction capability; the deep neural network is used for capturing a non-linear relationship and a complex mode in the data and improving the accuracy and generalization ability of prediction; based on an improved particle swarm optimization algorithm (PSO-ADE), a self-adaptive pigging decision engine is designed; initializing the algorithm to generate an initial particle swarm; operating an algorithm, and evaluating and updating the particles according to a target function; through iterative optimization, an optimal pigging strategy is found; and feedback data is collected, and the algorithm is further adjusted and optimized, so that the accuracy and effectiveness of decision making are improved. The pipeline cleaning strategy of the oil pipeline can be optimized.

The invention belongs to the technical field of oil and gas pipeline cleaning based on ice slurry, and particularly relates to an oil and gas pipeline cleaning device and method based on ice slurry, and the method comprises the steps that a first main valve and a second main valve are closed, a ball serving valve and a ball receiving valve are opened, and ice slurry is injected into a to-be-cleaned pipeline; the injected ice slurry is metered through a flow meter, and when the ice slurry with the preset flow is injected, injection of the ice slurry is completed; opening a ball serving barrel oil inlet valve and a ball receiving barrel oil outlet valve, adjusting the opening degree of the ball serving barrel oil inlet valve according to the ice slurry melting rate and the shearing stress, and controlling the ice slurry pigging speed; when the ice slurry reaches the ball receiving barrel, the inlet valve of the waste liquid tank is opened, the oil outlet valve of the ball receiving barrel is closed, and the ice slurry after pipe cleaning enters the waste liquid tank.

A mechanical intelligent pipeline plugging device comprises an anchoring plugging unit and a pipe cleaning unit, the anchoring plugging unit and the pipe cleaning unit are connected through a universal joint, the anchoring plugging unit comprises a front rolling wheel mechanism, a rear rolling wheel mechanism, a plugging mechanism, an anchoring mechanism and a speed reducer, and the anchoring mechanism is composed of a plurality of anchoring slips. The anchoring slips are evenly distributed on the periphery of the central axis of the anchoring plugging unit, the plugging mechanism is composed of a pressing disc, a rubber cup, a movable cone, a T-shaped sliding block, a fixed disc and a lead screw, the front end and the rear end of the pipe cleaning unit are provided with a cup assembly and an anti-collision head respectively, and a positioning tracking device is installed in the pipe cleaning unit. The problem that sealing is not tight due to pipeline ovality or welding seams can be effectively solved, the construction procedure of a lower air bag hole can be omitted through the double sealing leather cups, construction cost is reduced, construction safety is improved, safe and reliable zero-leakage plugging is achieved, and the double-sealing leather cup has the advantages of being reasonable in design, safe, reliable and reliable in sealing.

The utility model provides a lithium battery slurry double-ball bidirectional pigging system, which relates to the technical field of pipeline cleaning of slurry conveying systems in the lithium battery industry, and comprises a sending station, a returning station, a feeding module, a conveying pipeline module and a buffer tank module, a buffer tank module is arranged on a passage of the conveying pipeline module in a matched mode, and the feeding module is located on the path of the conveying pipeline module close to the sending station. The pipeline cleaning device is suitable for lithium battery slurry conveying systems under various working conditions, is also suitable for pipeline cleaning systems with similar requirements in other industries, can effectively and efficiently clean a lithium battery slurry conveying pipeline, does not need to carry out ball releasing and ball collecting operation for a long time after a pipeline cleaning ball is placed in the pipeline cleaning device during working, and is simple in structure and convenient to use. Manual participation can be reduced to the greatest extent, and the ball pushing waiting time and the material supplementing waiting time can be effectively saved, so that the production capacity is optimized and improved.

The invention relates to the technical field of spherical pig collection, and discloses automatic spherical pig collecting equipment which comprises a treatment chamber, a spherical pig collecting chamber is fixedly installed on the inner wall of the treatment chamber, one side of the spherical pig collecting chamber fixedly communicates with an oil conveying pipe, the other side of the spherical pig collecting chamber fixedly communicates with an oil outlet pipe, and the outer wall of the oil conveying pipe and the outer wall of the oil outlet pipe are connected with the inner wall of the treatment chamber in an inserted mode. A plurality of spherical pigs are arranged in the spherical pig collecting chamber, a spherical pig storage assembly is arranged outside the spherical pigs, an oil cleaning assembly is arranged below the spherical pig collecting chamber, the spherical pigs can be stored at the same time through the spherical pig storage assembly, all the spherical pigs are collected in a unified mode after all oil is conveyed, the collecting frequency and manual intervention are reduced, and the oil cleaning efficiency is improved. And oil adhered to the outer wall of the pigging ball can be cleaned through the oil cleaning assembly, and the cleaned oil can flow back into the oil outlet pipe to be continuously conveyed, so that no crude oil leaks in the pigging operation process, the ecological environment is protected, and the risk of harming the natural environment is reduced.

The utility model relates to the technical field of pneumatic ash conveying, in particular to a nitrogen backflow pigging ash conveying structure of a weighing type bin pump. Comprising a bin pump body, a fluidization disc is arranged at the bottom of the bin pump body, one side of the bottom of the bin pump body communicates with an air inlet pipe, an air inlet valve set is arranged on the air inlet pipe, the other side of the bottom of the bin pump body communicates with an ash conveying pipe, a discharging valve is arranged on the ash conveying pipe, a bearing support is arranged on the periphery of the lower portion of the bin pump body, and a weighing sensor is arranged at the bottom end of the bearing support. A first pressure transmitter is arranged on the top of the bin pump body, and a backflow mechanism is arranged between the ash conveying pipe and the ash storage container. The feeding weight is accurately recognized and the air inlet weight is accurately controlled through the weighing sensor, the material-air ratio can be accurately and reasonably controlled, when pipe blockage occurs, the backflow mechanism is opened, a high-pressure material-air mixture returns to the ash storage container through the backflow mechanism due to the pressure difference, the pipe blockage problem caused by insufficient fluidization is prevented, and continuous ash conveying is achieved.

The utility model discloses portable pipe cleaning equipment which comprises a water tank, idler wheels are installed on the inner wall of an idler wheel frame in an embedded mode, a containing groove is formed in one side of the upper end of the water tank, the lower end of the inner wall of the containing groove is fixedly connected with a fixed support, a sliding rail is arranged on the side face of a supporting frame, and a sliding block is installed on the inner wall of the sliding rail in an inserted mode. The outer wall of the sliding block is fixedly connected with a protective cover. According to the portable pipe cleaning equipment, the cleaning mechanism can be magnetically fixed and stored through the storage groove and the fixing support, the cleaning mechanism can be covered and protected through the protective cover, and the extension pipeline can be reset and stretched to be used through the reset rotating shaft and the curling shaft; a cleaning brush head, a second rotating motor, a water guide lantern ring, a rotating head, a rotating guide pipe and a stretching guide pipe are used for rotating and guiding out cleaning liquid for cleaning, the cleaning effect is better, stable rolling movement can be conducted through rolling wheels, telescopic adjustment can be conducted through a stretching rod, a stretching groove and a locking rotary knob, hole diameter adjustment is convenient, and the practicability is high. The use is more flexible.

The invention discloses an efficient hydrogen doping system and method for a natural gas pigging station, and belongs to the technical field of natural gas hydrogen doping. The system comprises an intelligent natural gas flow dividing and mixing system and a pigging device protection system; part of natural gas is introduced to be premixed with hydrogen, the uniformly premixed hydrogen-doped natural gas is mixed into a natural gas main line, and efficient mixing of hydrogen and part of natural gas and mixing of hydrogen and main line natural gas are achieved in stages; the pipe cleaning device protection system is used for intermittently introducing uniformly premixed hydrogen-doped natural gas to disturb a dead gas area near the barrier strip tee joint in normal operation. According to the efficient hydrogen doping system and method for natural gas pigging station transformation, the natural gas hydrogen doping technology and process are optimized, the investment of hydrogen doping facilities is reduced, and the safety of the hydrogen doping process is guaranteed.

The utility model relates to an anti-collision pigging valve, which belongs to the field of valves, and comprises a valve body, a valve seat, a ball body, a valve rod, a transmission mechanism and a pigging device assembly, the valve body is provided with an inlet channel, an outlet channel and a pigging device receiving and transmitting channel, the anti-collision ball is characterized in that an anti-collision sleeve made of a hard material is arranged in the through hole of the ball body, the anti-collision sleeve is fixedly installed in the through hole of the ball body through at least two radial screws, the diameter of an inner hole of the anti-collision sleeve is equal to that of an inner hole of the inlet-outlet channel, and spherical curved surfaces with the diameter equal to that of the ball body are arranged at the two ends. The anti-collision sleeve can be replaced on line after being damaged due to long-term collision. The device has the advantages of low manufacturing cost, good use performance, convenience in maintenance and replacement, low maintenance cost and the like.

The utility model relates to the field of water supply pipeline cleaning, in particular to a pipe cleaning auxiliary device for a water supply pipeline. The utility model provides a pipe cleaning auxiliary device for a water supply pipeline. A pipe cleaning auxiliary device for a water supply pipeline comprises a mounting pipe, a fixing frame, a driving motor, a rotating wheel, a moving wheel, a spring and a cleaning mechanism. By means of an automatic mode, the device can automatically walk in the pipeline, the effect of cleaning the inner wall of the pipeline is achieved in the walking process, different from a conventional cleaning treatment mode, the needed resource investment is less, the labor cost is lower, and after sundries and water scales are cleaned, the device can be used for cleaning the inner wall of the pipeline. And by means of the pushing and collecting effects of the containing disc, sundries and scale can be pushed and discharged along the pipeline, the cleaned sundries and scale are prevented from falling on the inner wall of the pipeline, practical application is simpler, and the step of cleaning residual sundries and scale in the pipeline is omitted.

The invention discloses a pneumatic conveying method and device for particle materials, a storage medium and a program product, and belongs to the technical field of pneumatic conveying. The invention aims to solve the technical problems of high energy consumption and low efficiency caused by pipe cleaning in the last stage of intermittent pneumatic conveying. The method is applied to a system comprising at least two pump sets and a shared conveying mother pipe, the conveying outlet pressure of the first pump set is monitored, and when the conveying outlet pressure is lower than a preset target switching pressure value, a conveying task is seamlessly switched to a second pump set full of materials. Furthermore, according to the method, the target switching pressure value is adaptively adjusted by recording pressure data (such as the maximum value and the high-pressure duration) of a historical period, and optimization can be carried out by combining a unit energy consumption index according to operation mode instructions such as the highest efficiency or the optimal energy efficiency. According to the method, a new efficient conveying stage is used for replacing a low-efficiency pipe cleaning stage, continuous conveying is achieved, the conveying capacity and the energy efficiency of the system are improved, and the intelligence and the working condition adaptability of the system are enhanced.

The application discloses a methanol pipeline overhaul replacement system and method, which comprises a pipeline conveying system, a movable pigging system, a high-efficiency displacement system and a residual medium safe treatment system. The application can effectively recover, empty and safely treat the medium in the methanol pipeline under the overhaul condition, ensure that no toxic and harmful gas directly enters the atmosphere during the recovery and discharge process, and achieve the purpose of high-efficiency recovery and safe discharge of methanol.

The invention discloses a pigging feasibility analysis method and device for a class-I gas pipeline, and the method comprises the steps: obtaining the pipeline information of a to-be-pigged gas pipeline, the information of additional equipment loaded on the gas pipeline, the size information of a receiving and sending ball cylinder on the pipeline, the specification information of a bent pipe, and the specification information of a tee joint; according to the method, according to the acquired information, the first-aid repair leaking stoppage historical operation information, the pipeline type information, the pipeline elevation data and the medium component information of the pipeline conveying gas, whether corresponding pipe cleaning conditions are met or not is judged according to the acquired information, and then whether pipe cleaning is conducted or not is determined. According to the embodiment of the invention, various pigging conditions required to be met by pigging are considered, and the gas pipeline is taken as a whole to provide a pigging feasibility analysis method, so that the reliability of pigging feasibility evaluation is improved.

The present invention discloses a safety guarantee system and method for hydrogen - doped natural gas based on blind - end accumulation control. The system includes a forced flow - disturbing system and an instrument monitoring system connected to the blind - end side of the pig - launching tee of an existing pig - launching and receiving system. The forced flow - disturbing system is used to connect the flow path on the blind - end side of the pig - launching tee of the existing pig - launching and receiving system with the flow path of the pig - bypass of the existing pig - launching and receiving system, and is used to disturb the gas stagnant area on the blind - end side of the pig - launching tee. The instrument monitoring system is used to monitor the medium flow conditions in the forced flow - disturbing system and the secondary guarantee system. Based on the long - term stratification trend of hydrogen - doped natural gas after standing still and combined with the actual situation of pipeline transportation, the present invention implements control countermeasures in the pig - launching tee area where gas blind - end standing still and accumulation are most likely to occur, and sets up a forced flow - disturbing system, a secondary guarantee system and an instrument monitoring system, effectively solving the relatively hidden but extremely harmful problem of blind - end gas stratification.

The present application relates to sample preparation workshop equipment dust removal method technical field, specifically, a kind of sample preparation workshop variable frequency pressure feedback pigging dust removal method and system.Its method includes: when sample preparation equipment starts, corresponding electric butterfly valve is opened, and equivalent load value is calculated according to equipment type, and basic operating frequency is obtained by substituting exponential decay function, and drive fan starts operation;Collect the negative pressure value of the most unfavorable point of pipeline, dynamically adjust the frequency of fan according to the negative pressure deviation and change rate, and limit the adjusted frequency in the preset proportion range of basic operating frequency;When sample preparation equipment stops, corresponding electric butterfly valve is closed, if there is still equipment running, recalculate target frequency and adjust;After all electric butterfly valves are closed, open end electric butterfly valve and lift fan to power frequency operation, after purging, close end electric butterfly valve and stop fan.The present application solves the problems of high energy consumption, poor dust removal effect and safety hazards of pipeline dust accumulation of traditional dust removal system.

The invention discloses a horizontal well casing bottom hydraulic rotary telescopic tripping-in device and a construction method. The problems that drilling, pigging and borehole cleaning are needed before casing running in existing horizontal well drilling construction, and casing running is difficult are mainly solved. The device is characterized in that the front end of the sleeve (1) is connected with a first back pressure valve (3) and a second back pressure valve (4), the front end of the second back pressure valve (4) is connected with a hydraulic rotary expansion piece (6) through a release pup joint (5), and the front end of the hydraulic rotary expansion piece (6) is connected with a guide head (7). According to the construction method, the borehole cleaning procedure before casing running is omitted, and the casing can be safely run.

The utility model relates to the technical field of gas production pipeline cleaning, in particular to a gas production pipeline cleaning auxiliary device which comprises a mounting cylinder and a flow guide pipe, an adjusting screw rod is arranged at the upper end of the flow guide pipe and rotatably connected with the flow guide pipe, the mounting cylinder is sleeved on the outer side of the adjusting screw rod, and a plurality of supporting wheel carriers are arranged on the outer side of the mounting cylinder. The supporting wheel carriers are matched with positioning columns arranged on the outer sides of the flow guide pipes in a sleeving mode, and the positioning columns are fixedly connected with the flow guide pipes and used for driving the supporting wheel carriers to be unfolded and folded when the flow guide pipes move. Spraying assemblies are arranged at the lower ends of the flow guide pipes. The spraying assembly at the end of the flow guide pipe can flush the inner wall of the pipeline, the flow guide pipe is pushed through the adjusting screw rod, the flow guide pipe drives the positioning columns to move together, all the supporting wheel frames are unfolded or folded at the same time, and the supporting wheel frames support the flow guide pipe from the inner side of the pipeline after being unfolded. And when the pipe cleaning auxiliary device moves in pipelines with different sizes, the flow guide pipe can still be kept in the center of the pipelines and cannot deviate, and the stability is good.

The invention discloses a pigging period monitoring method and system based on pipeline effusion and hydrate, and the method comprises the steps: collecting data, and carrying out the preprocessing of the data, and obtaining a data set; performing multi-dimensional analysis on the data set, and extracting data features; constructing a pigging period prediction model based on the data features; acquiring historical pigging data to train the pigging period prediction model; and constructing an expert scoring model to obtain an expert score, verifying and optimizing the trained pigging prediction model based on the expert score, and performing pigging real-time monitoring based on the optimized pigging period prediction model. The pipeline cleaning data is monitored in real time through the pipeline cleaning period prediction model to obtain task feedback data, the pipeline cleaning prediction model is verified and optimized in combination with expert scores, pipeline cleaning management is carried out based on the optimized pipeline cleaning period prediction model, monitoring and safety evaluation on the health state of a pipeline are more facilitated, and the pipeline cleaning efficiency is improved. And the accurate prediction period of the pipe cleaning operation is given.

The invention belongs to the technical field of pipe cleaning devices, and particularly relates to a large-caliber thermal long-distance pipeline cleaning device which comprises a power-assisted crawling robot, and the two ends of the power-assisted crawling robot are connected with a universal connecting mechanism and a flushing mechanism correspondingly. The water pressure in the hydraulic pipe cleaning mechanism can be controlled and adjusted by controlling the flow of water through the first flow control valve and the second flow control valve, and the hydraulic bag can be controlled to expand or contract by adjusting the water pressure in the hydraulic pipe cleaning mechanism, so that the hydraulic bag can adapt to pipelines with different pipe diameters; when the hydraulic bag is controlled to be expanded to a certain degree, the hydraulic pipe cleaning mechanism can be fixed through the hydraulic bag, so that power-assisted crawling is conveniently realized by matching with a power-assisted crawling robot subsequently; the hydraulic pipe cleaning mechanism can be prevented from moving backwards under the action of reverse thrust to influence normal wriggling and crawling when the telescopic mechanism on the power-assisted crawling robot controls the front end part to extend forwards, and the practicability of the pipe cleaning device can be effectively improved.

This invention provides a method for cleaning ultra-deepwater long-distance gas-liquid mixed transport subsea pipelines, belonging to the field of marine oil and gas engineering and flow safety assurance technology. The method includes the following steps: accurate data analysis and operational condition simulation; calculation of the minimum ethylene glycol injection volume required for each stage; prediction of the maximum slug flow rate and its impact on the platform separator and trap; determination of the specific duration, gas volume control range, and gas source switching node for each cleaning stage based on the simulation results, while developing an emergency plan; sequential execution of the four stages: production gas carrying liquid stage, recirculating gas purging and carrying liquid stage, recirculating gas cleaning stage, and production gas cleaning stage; and depressurization via a balancing valve, removal of the cleaning tool, and product analysis. This invention achieves controllable risks, reduced time, and minimized production loss in pipeline cleaning operations through a multi-stage gas source switching strategy, integrated real-time online simulation and early warning technology, and optimized slug flow control and ball launch / receiver procedures.

The present invention relates to an internal scraping and washing device and a cleaning method for deep-water pipelines in offshore oil and gas exploitation, belonging to the technical field of oil pipeline cleaning. The internal scraping and washing device includes a power unit, and a turbine mechanism, a speed reduction mechanism and a pigging mechanism are successively connected in series from top to bottom below the power unit; a plurality of traveling mechanisms are successively connected in series from bottom to top above the power unit. When the pigging of the internal scraping and washing device is carried out, the device will not completely block the pipeline, can ensure the fluidity of the fluid, and the crushed dirt is discharged by the fluid, so it is not easy to cause blockage, and can effectively reduce the risk of pipeline bursting. Since the fluidity can be maintained, the production of the oil production platform can be carried out without interruption, and the platform does not need to provide enough propulsion fluid, which greatly reduces the cost of pigging operation. It can repeatedly charge the power unit by using the turbine to provide power, and can ensure long-distance operation. It solves the problems that the existing pigging device is easy to block the pipeline and there is a risk of pipeline bursting.

The application belongs to the technical field of pipeline cleaning, and particularly discloses a pig for a carbon dioxide pipeline, which comprises a pig body and an electrostatic treatment unit, wherein the pig body comprises a pig framework and a leather cup, the leather cup is sleeved on the pig framework, the electrostatic treatment unit comprises an electrostatic adsorption module, an electrostatic locking module, a discharge module and an insulating plate, the electrostatic locking module and the discharge module are connected to the insulating plate, the electrostatic adsorption module is installed on the electrostatic locking module, and the electrostatic treatment unit is connected to the pig body. The application can realize adsorption and locking of electrostatic charges in the pigging process, separate the electrostatic treatment device from the pig body after the pigging operation is completed, realize discharge of the electrostatic treatment device through the discharge module, and enable the discharged electrostatic treatment device to be continuously installed on the pig for the next pigging operation, so that the electronic elements in the pig can be effectively prevented from being seriously damaged.

This application discloses a gas system management method and system based on data analysis, which belongs to the technical field of gas system management. It includes combining a wax deposition kinetics model with a deep neural network to design a hybrid prediction model architecture; the wax deposition kinetics model is used to describe the physical and chemical processes of wax deposition and provide basic prediction capabilities; the deep neural network is used to capture nonlinear relationships and complex patterns in the data to improve the accuracy and generalization of predictions; based on an improved particle swarm algorithm (PSO-ADE), an adaptive pigging decision engine is designed; the algorithm is initialized to generate an initial particle swarm; the algorithm is run to evaluate and update the particles according to the objective function; the optimal pigging strategy is found through iterative optimization; feedback data is collected and the algorithm is further adjusted and optimized to improve the accuracy and effectiveness of decisions. This application can optimize the pigging strategy of oil pipelines.

A pipeline pigging element (10) that changes its size in an axial and a radial direction as a function of applied pipeline pressure. The pigging element includes at least two circumferential zones (13, 15) having different section modulus than one another, each of the zones changing at different rates from one another between an uninflated and an inflated state at the applied pipeline pressure. The pigging element reacts to changes in pipe geometry, having a first length and a first diameter at a first applied pipeline pressure and a second length and a second diameter different than the first at a second applied pipeline pressure. As the pigging element wears, it becomes easier to inflate at the applied pressure and sealing contact with the pipe wall remains substantially unaffected. No onboard pumps or fluid circuits are required to inflate the pigging element.

The utility model provides a ball-passing type finished oil gathering pipe, which belongs to the technical field of oil gathering pipes and comprises a base, a support frame arranged at the top of the base, a manifold component arranged on the support frame, the manifold component comprises a plurality of groups of inlet pipelines, and a plurality of groups of outlet pipelines arranged on one side of the plurality of groups of inlet pipelines. A plurality of groups of three-way valves are respectively arranged between the plurality of groups of outlet pipelines and the plurality of groups of inlet pipelines, a plurality of groups of connecting pipelines are respectively arranged between the plurality of groups of three-way valves and between the plurality of groups of outlet pipelines and the plurality of groups of inlet pipelines, and the plurality of groups of three-way valves are arranged, so that a user can randomly combine the plurality of groups of inlet pipelines and the plurality of groups of outlet pipelines; multiple groups of external sources are communicated with multiple groups of external destinations, the connecting flexibility and the conveying efficiency of the device are improved, when a pipeline is cleaned, a user can rotate the valve element to ensure that the pipeline is smooth when the device is used for cleaning the pipeline, the residual quantity of liquid in the pipeline is reduced, and the practicability of the device is improved.

The invention discloses a cable self-crawling pipe cleaning robot for complex scaling in a pipe, and relates to the field of industrial pipeline maintenance. The device is mainly composed of a chemical agent injection system, a variable-diameter scraping system, a dirt real-time recovery system, an anchoring self-crawling system I (II) and a front-end monitoring system. The chemical agent injection system cooperates with the variable-diameter scraping and cutting system to work, chemical-mechanical combined type pipeline cleaning is achieved, the pipeline cleaning efficiency is improved, and the cleaning period is shortened. The variable-diameter scraping system adopts a ball screw, a variable-diameter sliding block, a variable-diameter guide rail base and a variable-diameter plate, so that the multi-pipe-diameter adaptability of the pipe cleaning robot is improved, and the cleaning operation process is simplified; the dirt real-time recovery system is provided with a flow suction pipe, a flow suction disc and a collection disc, real-time recovery of dirt is achieved, and the pipeline pollution risk is reduced. The pipeline cleaning device is compact in structural design, chemical-mechanical combined type pipeline cleaning and multi-pipe-diameter pipeline cleaning operation can be achieved, the pipeline cleaning efficiency is effectively improved, and the pipeline pollution risk is reduced.

The utility model relates to the technical field of pigging systems, in particular to a reducing ball receiving pipe structure which is small in size, can conveniently achieve steering of pigging balls and improve reverse pigging efficiency, comprises a ball receiving pipeline and is characterized in that the end of the ball receiving pipeline is connected with one end of a reducing pipe, the inner diameter of the middle section of the reducing pipe is larger than that of the two ends of the reducing pipe, and the diameter of the reducing pipe is larger than that of the ball receiving pipeline. The other end of the reducer pipe is connected with a tail pipe, a stop block is arranged in the tail pipe, and an air inlet and a drain outlet are formed in the side wall of the tail pipe.