5 results about "Pigging" patented technology

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.

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 utility model discloses a petrochemical pipeline pigging mechanism, including movable base, the top of movable base is equipped with the strip seat, the top of strip seat is equipped with the limit rail, one side slidingly connected with two limit blocks of limit rail top, the top of limit block is installed with the bearing seat, one side fixed mounting of bearing seat top end is equipped with the lower frame body, the upper end swing mounting of lower frame body inside is equipped with the upper frame body, and the top of upper frame body extends to the outside of lower frame body and is equipped with the vertical frame, is equipped with two guide rails on the inner wall of vertical frame, and the outer wall of guide rail is slidably connected with two rail seats, and the outer wall of a plurality of rail seats is installed with the movable frame, and the bottom of vertical frame is installed with the lift cylinder, and one side outer wall on movable frame upper end is installed with motor, and one end of motor penetrates movable frame and is installed with the roller brush. The utility model not only has reached the purpose of double -way adjustment pigging mechanism overall height, to promote the application scope of pigging mechanism, and has reached the purpose of electric type to petrochemical pipeline inside carries out pigging.

The present application belongs to the technical field of infusion equipment, and particularly relates to a visualized intelligent flushing and sealing pipe device. The present application comprises a signal processor and a flushing and sealing pipe interface. The flushing and sealing pipe device comprises a main body shell, one end of the main body shell is provided with the flushing and sealing pipe interface, the inside of the main body shell is provided with a Y-shaped confluence pipe, two inlet ends of the confluence pipe are respectively communicated with independent flushing and sealing pipe interfaces, the outlet end of the confluence pipe extends to the outside of the main body shell, the inside of the connecting channel of the confluence pipe and the flushing and sealing pipe interface is provided with a rod-shaped vortex generator which is perpendicular to the flow direction of the pipeline, the main body shell is provided with a cavity on the axial extension line of the vortex generator, and a piezoelectric element is embedded in the inside of the cavity. The above-mentioned setting converts the invisible flow rate parameter into the easily detected mechanical vibration signal, realizes the real-time visualized monitoring of the flushing and sealing pipe process, improves the detection sensitivity, suppresses the vibration cross talk between the double-channel flushing and sealing pipes, and improves the monitoring independence.

This invention discloses a skid-mounted pre-filming device for conveying pipelines. The device includes a cup-type pig and a sprayer. The cup-type pig moves along the conveying pipeline to clean it. The sprayer, mounted on the cup-type pig, contains a corrosion inhibitor and sprays it out through the pressure difference between the upstream and downstream sides of the cup-type pig. In water suction, cleaning, and pre-filming operations, the skid-mounted pre-filming device can at least complete the cleaning operation. Workers can select and combine different methods according to production needs, completing multiple operations simultaneously, shortening operation time, and reducing operating costs.