630 results about "Oil transportation" patented technology

The invention relates to a multilayered structure and multifunction pipeline and a connecting device, solving the disadvantages of poor corrosion resistance, poor crushing resistance, poor heat-insulating property, no shapely appearance, high production cost, single structure, and the like of the existing pipelines. The pipeline comprises a corrosion resistance layer, a crushing resistance layer, a heat-insulating layer and a bacteria resistance layer, and can be of the types of single corrosion resistance and crushing resistance, bacteria resistance, corrosion resistance and crushing resistance and heat-insulating, corrosion resistance and crushing resistance. The invention has the advantages of favorable corrosion resistance, high crushing resistance, favorable heat-insulating property, bacteria resistance, simple installation and connection, reduced production and installation cost, diversified structural type of pipeline and connecting device, and the like. The pipeline can be used for drinking water supply projects, drainage engineering, oil transportation, corrosive liquid transportation, high temperature liquid and gas transportation, etc.

The invention belongs to the field of oil transportation, and particularly relates to a crude oil viscosity-breaking pour-point depressant composition, and a preparation method and application thereof. At the temperature of higher than plasticizing temperature of organic pour-point depressant, 0-3% by mass of coupling agent, 0-10% by mass of high-molecular processing assistant, and the balance ofinorganic pour-point depressant and organic pour-point depressant are melted, uniformly mixed and granulated to obtain the crude oil viscosity-breaking pour-point depressant composition. The crude oil viscosity-breaking pour-point depressant composition is uniformly dispersed in a liquid dispersion medium, and proportionally injected into crude oil, so that the crude oil can be transported. The inorganic pour-point depressant and organic pour-point depressant in the crude oil viscosity-breaking pour-point depressant composition have a synergetic effect, and can effectively lower the solidifying point and viscosity of the waxy crude oil, so that the crude oil has favorable fluidity at low temperature and favorable rheologic timeliness, thereby enhancing the crude oil transportation efficiency and safety level and lowering the transportation cost.

A measuring and conduit monitoring and controlling alarm system of an oil collection and transportation system comprises a crude oil metering system and a conduit monitoring and controlling alarm system both of which are connected together with a butt joint by a crude oil metering system interface, wherein the crude oil metering system comprises a data acquiring and memorizing module, a production data monitoring and controlling module and a store-and-forward data module; the conduit monitoring and controlling alarm system comprises a data acquiring module, a data preprocessing module, a intelligent analyzing alarm module, a leakage recognizing module, a center server module, and a monitoring and controlling user terminal. The invented measuring and conduit monitoring and controlling alarm system of an oil collection and transportation system is a full automatic intelligentized system provided with a friendly man-machine interface, accurate localization and accurate alarming.

The invention relates to an oil unloading device vehicle for a railway oil tank and an oil transportation method thereof. A vehicle chassis system is fixedly connected with a platform assembly; the platform assembly is provided with a control box, an electrical control box, an oil return extending-retracting oil tank, an oil pump, a loading arm assembly, a loading arm box and an oil passage control valve; the loading arm assembly comprises a set of railway oil transportation loading arm assembly, a set of vehicle oil transportation loading arm assembly, and one to two sets of bottom filling oil pipe assemblies, wherein the railway oil transportation loading arm assembly is arranged in the an oil absorption loading arm box of the railway oil tank, and the vehicle oil transportation loading arm assembly is arranged in a vehicle oil transportation loading arm box; one side of the vehicle chassis system is provided with the control box; a flow meter, a dry self-sealing joint and the oil passage control valve are arranged in the control box; and the other side of the chassis is provided with the oil passage control valve. The vehicle can complete functions of vacuum pump priming, unloading oil transportation, bottom oil suction, emptying and the like, has the advantages of simple structure, convenient operation, convenient observation of the meter, reasonable layout, high measuring precision, higher explosive-proof grade and the like and is mainly used to suck the flue oil in the railway oil tank and transport the flue oil to the oil delivery vehicle.

The invention discloses an extracting device and an extracting method for zanthoxylum oil and is characterized in that an oil joint (3) at the left upper end of a low temperature refluxing extracting device (16) is connected with a plant oil heater by a first oil transportation pump(2); the right upper end is connected with a spiral propeller (4); a slag outlet (8) at the left side of the low temperature refluxing extracting device is connected with a squeezer (9); the oil outlet of the squeezer after being jointed with the oil outlet (15) of the low temperature refluxing extracting device is connected with a filter (10); the filter is connected with a clarifying pool (12) by a second oil transportation pump(11); the clarifying pool is connected with a filling machine (14)by a third oil transportation pump(13). The materials are added according to a mass ratio that the ratio of plant oil to zanthoxylum is 2:0.5 to 1. The plant oil is added into a heater (1) to pre-heat to be 80 to 90 DEG C; the zanthoxylum is added into a cracker (6) for being crashed to 20 to 40 meshes; the materials are respectively and continuously fed into the low temperature refluxing extracting device (16) at the two ends; the temperature in the low temperature refluxing extracting device (16) is maintained between 80 to 90 DEG C. The left side of the low temperature refluxing extracting device (16) is for fueling and discharges the slag; the right side is for feeding and discharges the oil to obtain the fished product of the zanthoxylum oil.

The invention discloses a biological oil spilling dispersing agent which is used for emulsifying spilled oil by a surfactant and performing biological repair quickly by using related microbes when oil spilling accidents occur in the process of oil exploitation, oil transportation and oil storage and a preparation method of the biological oil spilling dispersing agent. When the oil spilling accidents occur, the oil spilling dispersing agent is one of common methods for emergent treatment at present, but the conventional chemical oil spilling dispersing agent product has the defects of more consumption of chemical reagents, low degradation speed of the spilled oil and long periods of treatment time and the defect that pollutants can be transferred but cannot be degraded in the process of treating oil spilling leakage. Aiming at the defects, the novel biological oil spilling dispersing agent which contains the surfactant and is used for degrading oil spilling microbial strains quickly is developed. Compared with the conventional oil spilling dispersing agent, the biological oil spilling dispersing agent has the obvious advantages of energy conservation, consumption reduction, environment friendliness, emission reduction, direct reduction in pollution and the like and is quick, simple and convenient when applied to the oil spilling accidents. The microbial inoculum capable of degrading the spilled oil quickly has the advantages of high stability, high spilled oil degradation activity, high growth speed and no secondary pollution to the environment. The biological oil spilling dispersing agent and the preparation method thereof can also be applied to on-site biological repair during the emergent leakage pollution accidents of other various petrochemical products.

The invention provides a bearing chamber oil and gas two-phase flow and heat exchange testing device. The structure that a testing bearing and a shaft are directly arranged in a sleeved mode is designed. An oil transportation hole or groove is designed in the inner ring of the testing beaming or the inner ring of the shaft. A testing beaming lubricating structure is simplified under the circumstance that under-ring lubrication of the testing beaming is guaranteed. An electric heating type chamber body heating structure is designed, and the structure of the electric heating type chamber body heating structure is simplified compared with a tap water heating and cooling method, so that cost is reduced. Bearing chamber geometric structures of different sizes can be realized through replacement of axial distance rings of different sizes and radial distance rings of different sizes, and the cost of manufacturing a chamber body is reduced. An oil scavenger pump is additionally arranged so that oil can return smoothly, and the lubricating oil does not accumulate in a chamber. An exhaust vent is connected with an oil return tank through an oil way, so that the situation that oil mist is exhausted from an exhaust pipe and pollutes the environment is avoided, and waste of the lubricating oil is avoided. A high-speed camera is arranged to shoot oil and gas conditions inside the bearing chamber, so that oil and gas condition images and pressure and temperature signals are recorded on a computer synchronously.

An environment-friendly nano-epoxy silicone heavy anti-corrosion coating comprises a component A and a component B, wherein the component B is polyamide, and the component A is prepared by water-borne epoxy resin, a solvent, silicon carbide, aluminum oxide, nano-quartz powder, titanium dioxide power, zinc powder, aluminum powder, ceramic powder, cobalt-nickel ultrafine metal powder and graphite. A using method of the environment-friendly nano-epoxy silicone heavy anti-corrosion coating is that the component A and the component B are mixed evenly according to the weight ratio of 30-50:1 and then directly sprayed or brushed on the surface of an anti-corrosion object at the normal temperature. A coating layer formed by the coating has good abrasion resistance, corrosion resistance, impact resisting performance and flexibility and can effectively isolate corrosion of acid, alkali, salt and sea water. The surface of the coating layer is compact and smooth and has small resistance to a transmission medium. The coating can be widely applied to oil transportation pipelines, oil storage tanks, chemical equipment, ships, grinding wheel blades, pumps, dust removers, offshore steel structures and the like. In addition, the environment-friendly nano-epoxy silicone heavy anti-corrosion coating is water-based coating, does not contain harmful ingredients and is convenient and efficient in use.

The invention discloses a method for detecting leakage of a pipeline of a tank farm by combining the statistical hypothesis testing technology and the pattern recognition technology. The method comprises the steps that measuring meter data and actuator state feedback information of a working site are acquired through a tank farm monitoring system, an oil transportation path is determined, and Kalman filtering is carried out on pressure measuring meter data to generate pressure information; whether the pressure of the pipeline exceeds a limit is detected according to the multi-sequential probability ratio test, and if yes, an over-limit pressure sequence and the multidimensional time domain features of the over-limit pressure sequence are extracted; recognition of leakage of the pipeline and adjustment of working conditions are carried out based on an established neural network leakage recognition model. By means of the method, a small change of the pressure of the pipeline can be detected in the least time within a regulated false alarm rate and a regulated alarm failure rate, and then whether leakage of the pipeline occurs can be determined.

The invention discloses a welding process for transporting an alpha type aluminum oxide ceramic lining by an oil and gas pipeline. The welding process specifically includes conducting processing of grooves for welding on the end portions of oil transportation pipelines, filling ceramic powder slurry at the welding gap positions of the abutting connection ends of the two oil transporting pipelines, solidifying the ceramic powder slurry in low power laser scanning mode to weld the welding gap filler in sealing mode, utilizing large power laser to conduct further welding, melting and covering a ceramic layer on the welded surface in the step 4) and welding a metal layer on the ceramic layer in melting mode. The welding process utilizes the laser welding technology to achieve connection problem between the alpha aluminum oxide ceramic lining, obtains a process mechanism for conducing the material welding by applying the laser technology, achieves consistent connection performance of the alpha aluminum oxide ceramic lining in the oil and gas pipeline, and enables the oil and gas pipeline to obtain good protection effect.

The invention discloses a crude oil water-content on-line tester. The crude oil water-content on-line tester comprises a valve body with a valve cavity. The valve body is provided with an oil inlet and an oil return opening communicated with the valve cavity. The oil inlet is connected to an oil inlet pipe which is provided with a circulating oil pump and an oil inlet pipe stop valve and is connected to an oil transportation main pipe. The oil return opening is connected to an oil return pipe which is provided with an oil return stop valve and is connected to the oil transportation main pipe. A water-content tester probe is arranged at one of two opposite sides of the valve body and a push-pull rod is arranged at the other one of the two opposite sides of the valve body. Front parts of the water-content tester probe and the push-pull rod stretch into the valve cavity. A rear part of the push-pull rod stretches out of the valve body. A fluorine rubber sleeve with a centre hole is fixed to a front end of the push-pull rod. The centre hole of the fluorine rubber sleeve aims at the water-content tester probe and sizes of the centre hole and the water-content tester probe are matched. A rear end of the push-pull rod is connected to a push-pull power plant. The crude oil water-content on-line tester realizes automatic timing and regular wax removal, avoids stopping of the oil transportation main pipe, avoids dismounting and manual cleaning of the water-content tester probe, realizes accurate water-content tester detection data, and realizes simple and reliable crude oil water-content on-line detection.

The invention provides a volumetric heat exchanger with a self-excited pulsating enhanced heat exchange function and a working method thereof. The volumetric heat exchanger comprises a shell, a partition plate, a heating medium inlet pipe section, a heating medium outlet pipe section, a refrigerating medium inlet pipe section, a refrigerating medium outlet pipe section, a heat exchange pipe, hoses, a flow limiting valve, a self-excited oscillation device and a pulsating hydraulic transmission device. According to the volumetric heat exchanger with the self-excited pulsating enhanced heat exchange function, a pulsating jet is produced by the heating medium when the heating medium passes through a Helmholtz resonant cavity of the self-excited oscillation device; by utilization of the pulsating hydraulic transmission device, the pulsating jet is effectively converted into beneficial vibrations of the heat exchange pipe; compared with that of the stable-state flowing condition, the heat exchange efficiency of the volumetric heat exchanger is improved by 30%; as the heat exchange efficiency is improved, the heat transfer area of the heat exchange pipe and the material consumption are reduced; and the volumetric heat exchanger is compact in structure, convenient to mount, and applicable to ship waste heat recovery, power station oil transportation, chemical engineering heating, and the like.

A method for controlling a gap between a blade tip of a turbine casing and a blade tip of a turbine rotor blade includes a first step of detecting temperature of the turbine casing, a second step of detecting rotating speed of the turbine rotor, a third step of transmitting fuel oil to the turbine casing and cooling, and a fourth step of calculating the actual gap between the turbine casing and the corresponding turbine rotor blade according to the temperature of the turbine casing and the rotating speed of the turbine rotor, and limiting the actual gap within the range of the target gap by controlling flow of the fuel oil in an oil transportation pipeline in the third step when the calculated actual gap is not within the range of a preset target gap. Due to the fact that the fuel oil is adopted to cool the casing, pressure loss of the fuel oil in the flowing process is low, the fuel oil is burned in a combustion chamber after heat exchange, and thereby thrust loss can not happen.

The invention provides an anti-vibrating liquid storage tank for a transportation vehicle and belongs to the technical field of manufacturing liquid storage tanks; a structure of the liquid storage tank comprises a tank body; an innovative point of the liquid storage tank comprises that the inside of the tank body is provided with N tank bulkheads to divide an inner cavity of the tank body into N+1 tank compartments which are isolated and sealed with each other; the inside of the tank body positioned in the middle part is provided with an injection tube; the base of the tank compartment with the injection tube is provided with a release valve; the tank compartment with the injection tube is used as a starting point; the N+1 tank compartments are connected in series by a connecting pipe outside the tank body; an outlet end of the connecting tube is arranged on the upper part of the former tank compartment; and an inlet end of the connecting pipe is arranged on the base of the latter tank compartment. Compared with the prior art, the anti-vibrating liquid storage tank for the transportation vehicle has reasonable design and simple structure. The liquid storage tank utilizes a siphon theory, solves the problem of the flowing, charging and discharging sequence of liquid in a plurality of the tank compartments which are isolated and sealed with each other and drastically solves the problem of liquid vibration in each tank compartment filled with the liquid. The liquid storage tank can be not only used for the transportation vehicle but also used for other dynamic liquid storage tanks, such as a fuel tank of a plane, a fuel tank of a steamship, a liquid storage tank of a petroleum transportation tanker and the like.

The invention provides an epoxy powder primer used for anticorrosion paint for outer walls of deep sea oil transportation steel pipes and a preparing method thereof. The epoxy powder primer comprises following raw materials by mass: 40-50 parts of E-12 epoxy resin, 10-25 parts of linear phenolic epoxy resin, 25-45 parts of a filler, 9-15 parts of a curing agent, 0.1-1 part of an antioxidant, 0.2-1 part of a coupling agent, 0.9-1.8 parts of benzoate, 0.3-1 part of a levelling agent, 1-3 parts of graphene, 1-2 parts of polyvinyl butyral, 3-5 parts of modified polytetrafluoroethylene wax micropowder, 0.2-0.4 part of rare earth chloride and 1-3 parts of pigment. The epoxy powder primer has excellent wear resistance, resistance to pressure, bending resistance and impact resistance, is excellent in adhesion force and fraction of coverage for steel pipes, and can effectively protect the steel pipes from being corroded by various corrosive media in sea water for a long term.

The invention relates to a Hadoop-based petroleum transport vehicle oil consumption prediction method which comprises the following steps: (1) a data collection step, (2) a data storage step, (3) a step of calculating an oil consumption influence factor correction coefficient and (4) prediction calculation of an oil consumption quota. According to the method disclosed in the invention, a petroleum transport vehicle is a research object; a relevant calculation model is built based on big data analyzing and processing technologies; vehicle oil consumption is analyzed and calculated, reference basis is provided for transport enterprises to set a reasonable oil consumption quota, a root reason for high oil consumption can be found during research, effective measures can be adopted for lowering oil consumption, costs can be reduced, and energy can be saved.

A method for determining the variations in the sulfur content of ultra-low sulfur diesel fuel when it is transported through a petroleum transportation system includes sampling fuels at various points during barge transport, pipeline transport and in terminaling operations. New procedures and special handling regiments are developed in view of how the sulfur content of ultra-low sulfur fuel may change when transported through the system in sequence and stored with other petroleum products.

The invention discloses an anti-explosion wheel type inspection robot. The anti-explosion wheel type inspection robot comprises active wheels, an RFID anti-explosion controller, a pan-tilt-zoom camera, an anti-explosion emergency stop button mechanism, an anti-explosion navigation part, universal wheels, a main cavity, main drive mechanisms and an RFID antenna and is characterized in that the active wheels are mounted on the main drive mechanisms and located on the rear portion of the robot; the universal wheels are mounted on the two sides of the main cavity and located on the front portion of the robot; an emergency stop button is arranged in the anti-explosion emergency stop button mechanism and connected with a button fixing thread sleeve; and a button rod stretches to the exterior of the main cavity, a rotating button cap drives the emergency stop button to rotate, and thus the power supply switching effect is achieved. The anti-explosion wheel type inspection robot is mainly applied to the II-class explosion environment, and by laying a magnetic track, the robot can achieve actions of advancing, retreating, steering, turning-round and the like. In a specific position, the state of a measured object is subjected to visual analysis through a machine, data are read automatically, ultralimit alarming is conducted automatically, and thus the intrinsic safety management level of an oil transportation station can be effectively improved.

This invention discloses a force cylinder including a cylinder, first stage piston components 14, 1 moving to-and-fro and second stage piston components 3, 4 moving to-and-fro relatively to the first stage piston components, in which the first components include a first master oil cavity and a second master oil cavity, the second components include a first sub-cavity and a second sub-cavity connected with the two master cavities separately, rod 4 of the second components passes through piston 14 of the first, the first master cavity is connected with the first sub-cavity via an oil transportation channel set in the first piston components, the second master cavity is connected with the second sub-cavity via an oil transportation channel set in the second piston components.

The invention provides an oil well casing gas collecting device. An oil pumping pipe, an oil pumping rod and a casing are arranged in an oil well, the oil pumping rod is connected onto an oil pumping unit, and the oil pumping unit pumps crude oil from the oil pumping pipe and transports the crude oil to an oil transportation pipe. The device comprises a casing connecting pipe, a one-way valve A, a boosting pump, a one-way valve B and an oil pipe connecting pipe. The boosting pump includes a connecting rod, the upper end of the connecting is fixedly connected with a pressure arm, the upper portion of the oil pumping rod is fixedly connected with a pressure button, and the pressure button is located above the pressure arm. When the boosting pump is installed, the connecting rod is parallel to the oil pumping rod, and the pressure arm is intersected with the connecting rod but is not connected with the connecting rod. When the oil pumping rod is lifted up under the driving of the oil pumping unit, casing gas drives a piston, the connecting rod and the pressure arm to move upward under the action of self pressure. When the oil pumping rod moves downward under the action of self gravity, the pressure button presses the pressure arm to drive the connecting rod and the piston to move downward, and compressed casing gas in a compression cylinder enters the oil transportation pipe. By means of the oil well casing gas collecting device, a series of problems including difficulty in traditional oil well casing gas recovering, energy waste, environment pollution, safety hazard and the like are solved. Therefore, the oil well casing gas collecting device has obvious economic benefit and environmental-protection benefit.

The invention discloses a method for refitting an oil tanker into an FPSO. The method includes S1000, an establishing technology of a multipoint mooring chain controller related structure; S2000, an establishing technology of an oil transportation platform, S3000, an establishing technology of a flare tower, S4000, a lifting technology of a crane upper structure, and S5000, an establishing technology of a protecting pipe of a seawater lift pump, wherein a symmetry welding technology is adopted in pipe section folding, splicing and butt joint technologies in the above technologies, and the technologies can be constructed synchronously in parallel. By the adoption of the method for refitting the oil tanker into the FPSO, existing welding equipment, lifting equipment, accuracy measurement equipment and the like are fully used, human resources with related technical capacity are scientifically dispatched, the construction efficiency is high, the construction cost is low, the engineering quality of each subsystem meets the operation standard of an FPSO ship, the engineering quality of the FPSO ship is effectively guaranteed, and therefore the after-sales service time nodes of the FPSO ship are effectively prolonged.

The invention relates to a double moon pool floating production drilling oil storage ship. The double moon pool floating production drilling oil storage ship is characterized by comprising a ship body main deck region, and a process module, a production moon pool, a drilling moon pool, a drilling support module, a power module and a living region which are sequentially arranged from a stern to a bow, and a power positioning system and a stern oil transportation and discharging device; the process module comprises an oil, gas and water separator; one of a dry production tree and a wet production tree is arranged in the production moon pool region; the drilling moon pool is arranged in the middle of the ship body; a drilling channel with a large opening on the upper part and a small openingon the lower part is formed on the ship body at the drilling moon pool; the drilling support module comprises a well port module, a solid control module, and a slurry module; the living region comprises an accommodation region, a changing room, an equipment room, a workshop, and a central control room, and is provided with an air-conditioning system and a helicopter deck; the power positioning system comprises a position measurement system arranged in the living region, a power positioning control system and an execution mechanism which are arranged in the living region and the bow and the stern; and the stern oil transportation and discharging device is arranged on the stern of the ship body.

The invention relates to box type multifunctional aircraft refueling equipment, which is characterized by comprising an openable box, and two sets of oil transportation refueling mechanisms which are arranged in the same box, consist of metering devices and a pipeline valve system for realizing oil transportation and comprise a four-channel gravity fueling mechanism and a two-channel concealed telescopic fueling mechanism. By the box type multifunctional aircraft refueling equipment, normal aircraft refueling operation is realized in a four-channel gravity fueling mode and a two-channel pressure fueling mode, so that the fueling radius is greatly enlarged, and after the fueling is finished, an oil transportation pipeline can be shrunk, and the occupied space of the whole equipment is reduced; and moreover, the box type multifunctional aircraft refueling equipment contributes to keeping the operating site neat and standardizing the requirements of environment friendliness.

The invention discloses an on-line sand removal apparatus for oil-gas pipelines, which is applied in the field of petrochemical engineering. The on-line sand removal apparatus mainly includes a spiral separation section, a cyclone sand-separation section, a flow recovery section and a sand storage chamber. The spiral separation section includes a spiral inlet end surface, axially-symmetrical double spiral pipes and a spiral outlet; the cyclone sand-separation section is located at the downstream of the spiral separation section; the spiral outlet of the spiral separation section is inserted in the cyclone sand-separation section; a sand discharge hole is arranged below the cyclone sand-separation section; the sand storage chamber is installed under the sand discharge hole; and the flow recovery section is arranged at the end of the sand removal apparatus. Through combination of spiral separation and cyclone separation, the sand removal apparatus is high in separation efficiency and is suitable for oil transportation, gas transportation or oil-gas mixed transportation pipelines. There is no filter component in the structure, so that a problem of blocking in the sand remover can be solved once for all; the sand removal apparatus can be installed in the same way as a common valve vertically or horizontally without occupation of extra spaces and application of assistant facilities.

The invention provides a full-DOF (Degree Of Freedom) wave power generation device. The full-DOF wave power generation device comprises a float, an oil tank platform, hydraulic rod groups, a support tank body and oil transportation pipes, wherein the float is arranged at the lower side of the oil tank platform; one end of each hydraulic rod group is connected with the oil tank platform, the other end of each hydraulic rod group is connected with the inner side of the support tank body, and the oil tank platform is connected with the hydraulic rod groups through the oil transportation pipes; the hydraulic rod groups comprise a transverse hydraulic rod group and a longitudinal hydraulic rod group; the longitudinal hydraulic rod group is arranged on the oil tank platform in the axial direction, and the transverse hydraulic rod group is arranged on the oil tank platform in the circumferential direction. According to the full-DOF wave power generation device provided by the invention, multiple hydraulic rod groups are adopted, one part of the hydraulic rod groups are circularly arrayed in the horizontal plane, the other part of the hydraulic rod groups are equidistantly arranged in the vertical plane in parallel, and since the motion direction of waves is not determined, the motion of piston rods in cylinder bodies can be caused by motion and rotation, which are caused by the waves, of the float in each direction.

The invention relates to the technical field of oil transportation engineering of oil field surface, and belongs to a performance testing device and method for a screw pump. The invention comprises a testing device and a detecting device as well as corresponding methods. The device is used for single-phase or two-phase media simulating experiment and has functions of simply judging the performance of the screw pump and optimizing the rotation speed of the screw pump. According to the testing device and method, a research on the performance of the screw rod pump under the conditions of different rotation speed, inlet and outlet pressure difference of the pump, viscosity of crude oil, mass parts of conveyed medium gas and the like is carried out. The detection device is designed, comprises a sensor, a programmable logic controller (PLC), an upper computer and a variable frequency control cabinet, and is used for acquiring data of the screw pump; by adopting a relative error method of actual measurement rotation speed and optimized rotation speed, the condition of the performance of the screw pump is judged. According to the operation of the device, the semi-automation is realized, and the method for judging the performance condition of the screw pump is simple and convenient; meanwhile, by a negative feedback controlling method, the rotation speed of the screw pump is adjusted, so that the screw pump is positioned in an optimal operation state, and the service life of the pump is extended.

The invention discloses a mobile lifting mechanism special for an oil transportation pipeline and a pipeline connection joint thereof. The mobile lifting mechanism special for the oil transportation pipeline comprises a base, a positioning pipe and side protection frames, wherein a vertical pipe is vertically fixed to the top center of the base, a screw rod is installed in the middles of the vertical pipe and the base in a bearing-penetrating mode, and a first positioning piece is installed at the top edge of the base in a bearing mode; a positioning ring is movably arranged on the outer wall,located inside the vertical pipe, of the screw rod, and a sleeve is movably arranged on the outer wall of the middle part of the positioning ring; and one ends of supporting rods are fixedly connected to the outer wall of the sleeve, the other ends of the supporting rods are fixedly connected to a bearing seat, and the bearing seat is positioned right above the vertical pipe. According to the mobile lifting mechanism special for the oil transportation pipeline and the pipeline connection joint thereof, adjustment and change of the use support height of the pipeline can be facilitated, liftingand positioning and reinforcement of the pipeline are facilitated, and meanwhile, application of wrapping clamping and positioning and secondary sealing treatment of the connection joint of the pipeline are achieved.

The invention discloses a coaxial strain sensor filled with discontinuous media. The coaxial strain sensor is provided with a coaxial inner conductor, an outer conductor, a protecting bush and a load, wherein the outer conductor, the protecting bush and the load are located outside the inner conductor. An insulation layer is filled between the inner conductor and the outer conductor and has an insulation section I and an insulation section II, wherein the dielectric constant of the insulation section I and the dielectric constant of the insulation section II are different. The coaxial strain sensor has the advantages that a coaxial cable mechanical structure is not changed, parts of the sensor can bear identical strain strength, local fracture is not prone to occurrence, and therefore great strain can be monitored. The seal state of an original coaxial cable is not broken, corrosion is not prone to occurrence, and the sensor can be used in a moisture environment and other complicated environments for a long period of time. The sensitivity of the sensor can be set. Additionally, the sensor is simple in structure, low in cost, easy to machine, produce and apply, high in reliability, and capable of being used for structural safety monitoring of coast dams, large hydropower stations, bridge tunnels, oil transportation and gas transportation pipelines, large stadiums and other large infrastructure.

The present invention provides a kind of insulation casing specially used for petroleum transportation, which is composed of an outer pipe and an inner pipe coaxially socketed to form a casing, and the inner pipe is the inner pipe for oil transportation; Between the pipe and the inner pipe, the outer pipe and the inner pipe are fixedly connected; The layers are divided and circulated. The thermal insulation sleeve of the present invention clearly solves the problem that thermal insulation conditions must be provided in the oil transportation process, and has three advantages. First, it greatly reduces the construction cost of the petroleum transportation thermal insulation project, and secondly, it improves the thermal insulation during the petroleum transportation process. The third effect is to optimize the environment and save resources.