54 results about "Wax precipitation" patented technology

The invention discloses a transformer oil tank, and relates to the technical field of power transformers, the transformer oil tank comprises an oil tank body and a plurality of groups of fin mechanisms, and each group of fin mechanism comprises radiating fins with cavities formed inside. The cooling fins with the cavities are arranged on the outer side of the oil tank body, the slidable adjusting plate and the driving assembly are matched, the effective oil storage volume of the cooling fins can be flexibly adjusted according to the environment temperature, the maximum cooling area is guaranteed in the non-low-temperature environment so that efficient cooling can be achieved, the cooling contact area is reduced in the low-temperature environment, and the service life of the oil tank is prolonged. Wax precipitation and viscosity increase caused by excessive cooling of the cooling oil are avoided, so that the insulating property and the circulating fluidity of the cooling oil are maintained, the circulating stirring mechanism can promote efficient circulation of the cooling oil between the oil tank and the fins under driving of the driving mechanism, and the heat dissipation efficiency is further improved; the problems of heat dissipation and insulation performance of the oil-immersed transformer in a low-temperature environment are effectively solved, and the operation reliability and environmental adaptability of equipment are improved.

The invention discloses an experimental device and method for researching a wax precipitation rule in a porous medium in a near wellbore area, and belongs to the technical field of wax precipitation experiments.The experimental device comprises a wax deposition visualization model, a multi-stage temperature control module, a liquid injection and cleaning module, a confining pressure adjusting module, a back pressure control module, a product recovery module and an image acquisition module; a natural rock core slice with a pore throat structure is simulated through a wax deposition visual model, a multi-stage temperature control module is utilized to perform graded local heating to simulate complex temperature conditions of a stratum, confining pressure is provided through a confining pressure adjusting module, and model outlet pressure is adjusted through a back pressure control module to simulate flowing bottomhole pressure. Crude oil and cleaning fluid are injected into the liquid injection and cleaning module, and an oil displacement experiment and cleaning after the oil displacement experiment is completed. The image acquisition module and the visual clamping module are used for visually observing the wax precipitation process in the model, the wax crystal phase change process in the experiment process is analyzed, and the wax step-by-step precipitation law is represented through wax precipitation formulas of different parts of the model.

The invention relates to a micro-fluidic chip pour point depressant intelligent screening and optimizing device and method integrating multi-parameter detection, and the micro-fluidic chip pour point depressant intelligent screening and optimizing device integrating multi-parameter detection comprises an experiment module, a data acquisition module and a data analysis and control module, the experimental module comprises a power area, a conveying area, a temperature control area, an imaging area and a recovery area, the imaging area comprises a polarizing microscope and a micro-fluidic chip, the micro-fluidic chip comprises a sample introduction channel, a storage chamber, a micro-mixing chamber, a wax precipitation chamber and a temperature control system, and the micro-mixing chamber realizes efficient mixing of a pour point depressant and crude oil; the wax precipitation chamber simulates the complex flow state environment of a real oil pipeline, a wax crystal morphology observation area, a wax crystal motion behavior observation area and a wax crystal dynamic behavior observation area are arranged, the wax crystal flow state is observed, and wax crystal dynamic parameters are collected; through dynamic time sequence modeling of LSTM and strategy gradient optimization of PPO, efficient dynamic adjustment of a pour point depressant formula is realized.

The invention provides a shale oil well wax precipitation inhibitor based on fracturing fluid flowback as well as a preparation method and a use method thereof, and belongs to the technical field of wax precipitation prevention and control. The wax crystal inhibitor is used for inhibiting the precipitation of waxy substances in crude oil and reducing the formation of wax crystals; the dispersing agent is used for dispersing the wax crystals in the fluid so as to prevent the wax crystals from agglomerating into blocks and depositing; the rheological modifier is used for optimizing the rheological property of the fracturing fluid and enhancing the dispersity of the wax precipitation inhibitor in the fracturing fluid; the temperature regulator is used for regulating the activity of the paraffin precipitation inhibitor according to the change of the oil well temperature; and the solvent is used for ensuring the uniform dispersion of the raw material components. The paraffin inhibitor can effectively solve the problem of paraffin precipitation in the shale oil well fracturing fluid flowback process in the prior art, and has wide adaptability and excellent paraffin inhibition effect.

The oil supply system comprises a main oil tank, an auxiliary oil tank and a heating module, a first kind of fuel oil is contained in the main oil tank, a second kind of fuel oil is contained in the auxiliary oil tank, and the heating end of the heating module is arranged in the main oil tank. The heating module heats the first type of fuel oil in the main oil tank, and the engine can work according to the second type of fuel oil or the heated first type of fuel oil. According to the oil supply system, the engine of the excavator can be firstly started through the second type of fuel oil in the auxiliary oil tank, and then the first type of fuel oil with lower cost in the main oil tank is heated through the heating module, so that the problem of wax precipitation of the first type of fuel oil in a subzero low-temperature environment is avoided; and then the first type of fuel oil is switched to serve as an oil supply source of the engine, so that the working cost of the excavator in the subzero low-temperature environment is reduced, and the working performance of the engine in the subzero low-temperature environment is improved.

The invention relates to the technical field of oil exploitation, in particular to an oil well automatic regulation and control dosing method and system, and the method comprises the steps: arranging a plurality of temperature sensors on an oil pipeline in an oil well, and collecting data points; clustering all the data points to obtain category labels of all the data points, communicating according to a spatial sequence based on an obtained category label sequence, and outputting M spatially continuous dosing segments; and acquiring wax precipitation characteristic parameters of the first dosing section, inputting the acquired wax precipitation characteristic parameters into a pre-constructed wax inhibitor concentration demand prediction model, and outputting the wax inhibitor concentration demand of the first dosing section. According to the invention, the addition amount of the wax inhibitor is accurately controlled according to the actual flowing state and temperature distribution of the oil body, so that the agent is fully mixed in the pipeline and reaches the target concentration, insufficient or waste of local agent addition is avoided, and the wax inhibition effect and the drug use economy are obviously improved.

The application embodiment provides a wax precipitation point testing device and method, which comprises a nuclear magnetic resonance instrument, an incubator, a first high-precision displacement pump, a second high-precision displacement pump, a third high-precision displacement pump, a back pressure valve, a fourth high-precision displacement pump and a vacuum pump, the nuclear magnetic resonance instrument is internally provided with a core holder, the incubator comprises a high-temperature high-pressure kettle, a first intermediate container and a second intermediate container, and the first intermediate container and the second intermediate container are internally provided with non-magnetic fluids. Based on the principle that the hydrogen atom magnetization intensity in crude oil has a difference in the decrement rate before and after the wax precipitation point, the nuclear magnetic resonance technology is used to accurately obtain the wax precipitation point under different pressures, the existing wax precipitation point testing technology under high-temperature high-pressure conditions is supplemented, the adverse effects caused by the wax precipitation in oil and gas production operation are reduced, and the efficient development of high-wax-content reservoirs is facilitated.

The invention relates to the technical field of fluid phase analysis, and provides a method and device for determining the wax precipitation amount in the oil and gas conveying process, and the method comprises the steps: carrying out a single-phase stability test on a conveyed fluid to generate a single-phase stability test result; if the system corresponding to the wax-containing one-phase stability test result is unstable, performing wax-containing two-phase flash evaporation calculation on the wax-containing one-phase stability test result to determine a first wax precipitation amount; if the system corresponding to the single-phase stability test result is unstable, performing gas-liquid two-phase flash evaporation calculation on the single-phase stability test result, and performing wax-containing two-phase stability test on the gas-liquid two-phase flash evaporation calculation result; and if the system corresponding to the wax-containing two-phase stability test result is unstable, performing gas-liquid wax three-phase flash evaporation calculation on the wax-containing two-phase stability test result to determine a second wax precipitation amount. According to the method, the change condition of the wax precipitation content along with the temperature in the oil and gas transmission process, especially under the under-pressure working condition, can be accurately predicted, and the calculation robustness is improved.

The invention relates to a rodless pump well fiber paraffin control and removal device which comprises an outer pipe oil pipe, and the inner side wall of the outer pipe oil pipe is evenly connected with a plurality of active paraffin precipitation device fibers and paraffin catcher ropes. A lifting cable is fixedly connected to the middle of the upper end of the paraffin removal connecting device, and the paraffin removal connecting device is movably inserted into the outer oil pipe. According to the equipment provided by the embodiment of the invention, the wax catcher cotton rope and the active wax precipitation device fiber, namely a fibrous or woolen yarn-like structure, are mounted on the inner wall of the oil pipe, namely a wax crystal or wax molecule adsorption fiber material or adsorption cotton rope, and are lowered into a well along with the oil pipe and below a wax precipitation point during oil well operation, so that when the oil well is in production, if the oil contains wax, the wax crystal or wax molecule adsorption fiber material or adsorption cotton rope is not damaged; and the wax can be easily captured and gathered by the rope of the wax catcher and the fiber of the active wax precipitation device, equivalently, the wax is removed from the oil, so that the wax is more conveniently and quickly captured and removed from the oil liquid.

The invention discloses a device and a method for simulating a wax deposition test in a flowing process of crude oil with different components. The device comprises a gas supply tank, a mixing tank, a centrifugal pump I, a wax deposition test system and a dosing and mixing tank, an outlet of the gas supply tank is connected with a mixing tank, an outlet of the mixing tank is connected with a centrifugal pump I, the centrifugal pump I is connected with a test sample inlet of a wax deposition test system through a test sample input pipeline, a test sample outlet of the wax deposition test system is connected with an inlet of a dosing mixing tank, and an outlet of the dosing mixing tank is connected with a recovery pipeline; a recovery tank is connected to the recovery pipeline, and the recovery pipeline is communicated with the test sample input pipeline. Different from the situation that the wax precipitation rule test result cannot be reproduced due to the fact that wax sample components in crude oil are reduced along with the prolonging of test time in the conventional large-size wax precipitation simulation test, the test method has very small influence on the wax components in the oil sample, and can be used for testing multiple parameters by using the same oil sample, so that the consistency of the test sample composition is ensured, and the test efficiency is improved. And the test result reproducibility is good.

The invention discloses an oil increasing device for an oil field, and relates to the technical field of oil exploitation. The oil field oil increasing device comprises a shell, an oil inlet is formed in the bottom of the shell, permanent magnet moving equipment is movably connected to the top of the oil inlet, and an oil outlet pipe is fixedly connected to the interior of the shell; a first pushing block is slidably connected to the upper portion of an internal permanent magnet of the permanent magnet moving equipment, a first hydraulic ring is slidably connected to the upper portion of the first pushing block, the side face of the first hydraulic ring is fixedly connected with one end of a first hose, the other end of the first hose is fixedly connected with a first hydraulic block, and a second pushing block is slidably connected to the top of the first hydraulic block. The top of the second push block is fixedly connected with a valve, the bottom of the valve is fixedly connected with a dosing box, and the spherical nozzle is movably connected with the first hydraulic ring through a transmission piece. According to the oil increasing device for the oil field, permanent magnet moving equipment moves up and down and is matched with a first push block, a first hydraulic ring, a first hose, a transmission piece, a valve and a spherical spray head, so that an active agent is uniformly sprayed, and the wax precipitation phenomenon is relieved.

The present application belongs to the technical field of oil production matching technology, and discloses a high-coagulation heavy oil reservoir cold damage evaluation method, which utilizes physical simulation and numerical simulation methods to analyze the reservoir cold damage degree, reversibility, the minimum temperature for avoiding cold damage and the reservoir temperature recovery time from quantitative and qualitative aspects, wherein the physical simulation firstly determines the crude oil properties through the crude oil viscosity-temperature and wax precipitation experiments, then utilizes the core to carry out breakthrough pressure experiments to determine the occurrence temperature of the reservoir cold damage, startup pressure experiments to determine the minimum temperature for avoiding damage, relative permeability experiments to determine the influence degree of the cold damage on the reservoir percolation capacity, mercury injection experiments to analyze the influence of the cold damage on the reservoir pore structure, and two-dimensional nuclear magnetic experiments and laser confocal experiments to determine whether the cold damage is reversible and the reversible temperature; the numerical simulation is utilized to analyze the recovery time required for different liquid amounts and different temperature working liquids to enter the formation, so as to finally achieve the purposes of reducing the development cost of the high-coagulation oil reservoir and improving the development effect.

The invention discloses a CO2 drive reservoir producing well shaft phase change point calculation method. The method comprises the following steps that S1, a bubble point temperature-pressure relation curve and a wax precipitation temperature-pressure relation curve of a target well are calculated; s2, calculating a temperature-well depth relation curve and a pressure-well depth relation curve of the target well under different working conditions; s3, calculating a bubble point temperature-well depth relation curve and a wax precipitation temperature-well depth relation curve under different working conditions; s4, calculating gas-liquid phase change point depths and wax precipitation phase change point depths under different working conditions; s5, obtaining a calculation formula and a calculation formula through multiple linear regression; s6, the actually-measured production conditions of the target well are substituted into the calculation formula, and the phase change point of the target well under the production conditions can be calculated. According to the method, rapid and accurate prediction of the phase change point of the shaft of the CO2 flooding producing well is realized.

The invention relates to the technical field of oil and gas field development, and discloses a method, a system, equipment and a medium for evaluating the influence of wellbore dirt on organic solid phase deposition. The method comprises the steps of determining temperature fields corresponding to different wellbore positions of a single well, correspondingly setting a first temperature according to the temperature fields where the different wellbore positions are located, cooling at a set speed according to the first temperature, recording the change condition of differential heat flow to the temperature in real time, and drawing differential scanning calorimetry curves under the different wellbore positions when a second temperature is reached, determining a wax precipitation point and an interpolation base line of a wellbore temperature interval based on differential scanning calorimetry curves at different wellbore positions, further determining the wax content in the process from the well bottom to the wellbore, further obtaining the organic solid phase deposition in the crude oil at different wellbore positions, and calculating the organic solid phase deposition in the crude oil based on the organic solid phase deposition in the crude oil at different wellbore positions. And evaluating the influence of wellbore dirt on organic solid-phase deposition in crude oil. The method truly and accurately simulates the influence of different shaft positions on organic solid phase deposition.

The application provides a pipeline wax deposition effect testing system and method, the testing system comprising: a wax precipitation device, a sonar detection device and a processing device; the wax precipitation control device is used for controlling the wax precipitation process in the pipeline, the wax precipitation process is the process that the wax is precipitated and deposited in the pipeline; the sonar detection device is used for emitting a first sound wave into the pipeline after the end of the wax precipitation process, and recovering a second sound wave corresponding to the first sound wave, and sending the data of the first sound wave and the second sound wave to the processing device; the processing device is used for determining the form of the wax deposition in the pipeline according to the data of the first sound wave and the second sound wave. The application can effectively obtain the characteristics of the wax deposition.

The invention relates to the technical field of oilfield chemistry, in particular to a wax crystal inhibitor for oil and gas production and a preparation method thereof, and the wax crystal inhibitor for oil and gas production comprises the following raw materials in parts by mass: 60-65 parts of an oily solvent, 10-15 parts of a wax crystal modifier, 5-10 parts of a penetrant and 10-15 parts of a surfactant. Through interaction of the components in the raw materials, the wax crystal inhibitor for oil and gas production enters a wax crystal molecular structure before oil well wax precipitation, wax crystal scaling is destroyed, wax aggregation, growth and precipitation are prevented, the problem that oil well production and conveying are difficult due to wax precipitation of a high-wax-content oil well is effectively solved, wax crystal aggregation and adsorption are prevented, and the oil production efficiency is improved. And the wax is extracted along with the liquid flow. Meanwhile, the demulsifying agent has good compatibility with a field demulsifying agent and does not influence crude oil dehydration.

The invention discloses an intelligent monitoring, predicting and cleaning integrated robot for well wall wax precipitation. Relates to the technical field of oil exploitation equipment. A non-contact laser distance measuring sensor is arranged in a detector fixing box; the rotating mechanism comprises a rotating rod, a rotating base and a rotating motor, the detector fixing box is connected with the rotating rod, and the output end of the rotating motor is meshed with a transmission gear on the rotating rod through a transmission gear; the middle walking mechanism comprises a main support, a spring compression assembly and a walking wheel installation sheet. The tail cleaning mechanism comprises a mounting base and a scraper, and the mounting base is connected with the end, away from the detector fixing box, of the rotating rod. The intelligent monitoring, predicting and cleaning integrated robot for well wall wax precipitation has good self-adaptive capacity and structural stability, is suitable for continuous operation under various complex pipe diameter conditions caused by wax precipitation in the oil and gas well production process, achieves intelligent real-time monitoring, scientific prediction and autonomous cleaning, and is high in practicability and high in practicability. And the oil field maintenance efficiency and economic benefits are obviously improved.

The present application relates to a kind of methods for extracting oil and rubber oil dewaxing, it is characterized in that using the composite solvent of polar solvent and solubilizer is dewaxing solvent, polar solvent uses N-methyl pyrrolidone, solubilizer is the mixture of one, two or three of benzene, toluene, xylene, above wax precipitation temperature, the composite solvent is mixed with extracting oil or rubber oil, then crystallization is cooled, filtration is obtained wax cream and filtrate, wax cream and filtrate are respectively heated and evaporated to recover solvent and obtain wax and dewaxed oil.

The invention belongs to the field of pipeline cleaning, and particularly relates to an oil field pipeline cleaning mechanism which comprises transition pipes communicating with the two ends of a pipeline needing to be cleaned and an impurity removing device used for cleaning the pipeline. The two transition pipes are located on the inner sides of the pipeline switch valves respectively, the transition pipes are Y-shaped bypass short sections welded to the pipelines, and cleaning channels are formed between the bypass short sections of the two transition pipes and the pipelines communicated with the bypass short sections. The guide rope is reserved in the pipeline, when the interior of the pipeline needs to be cleaned, only the first flange of the transition pipe bypass short section needs to be opened, the fixing device for limiting the guide rope needs to be removed, then the connector at one end of the guide rope is connected with one winch through the scraper, and the connector at the other end of the guide rope is directly connected with a lead of the other winch. And then the winches are started, the two winches work alternately, so that the purpose that the scrapers efficiently clean impurities in the pipeline is achieved, the problems of internal scaling and pipe blockage caused by wax precipitation are solved, the structure is simple, cost is low, and environmental protection is achieved.

The utility model discloses a rodless oil extraction heating system, relates to the technical field of rodless oil extraction, and mainly aims to provide the rodless oil extraction heating system which works without stopping production and can prevent wax precipitation on the inner wall of an oil pipe. According to the main technical scheme, the rodless oil extraction heating system comprises a heating component and a heating component, the upper end part is detachably connected to the lower end part, the lower portion of the lower end part is connected to a Christmas tree, the lower end part is provided with a first channel, the clamping part is arranged between the upper end part and the lower end part, the upper end part is provided with a second channel, and the sealing part is arranged on the upper portion of the second channel. The heating part sequentially penetrates through the sealing piece, the second channel, the clamping part, the first channel and the Christmas tree and extends into the oil pipe; the control component and the main control component are connected to the modulation component, the power supply component and the isolation transformer are connected to the modulation component, and the isolation transformer is connected to the heating component. The rodless oil extraction device is mainly used for rodless oil extraction.

The invention belongs to the technical field of oil exploitation, and discloses a condensate gas well wax precipitation prediction method and application thereof.The method comprises the steps that a dynamic shaft gas-liquid wax precipitation prediction model is established through a basic diffusion deposition equation by considering the influence of an oil wax structure and gas high shear force, and the total model is shown in the formula (6); and the # imgabs0 # brings basic data of an oil and gas well into the model, calculation is carried out, and a wax precipitation chart is established. According to the invention, the paraffin precipitation position and the paraffin precipitation speed of the oil well can be predicted more accurately. According to the method, a gas-liquid two-phase wax deposition dynamic model is established by considering wax deposition mechanism influences such as flow patterns, gas high shear force and oil wax structures. The model is applied to establish a paraffin precipitation prediction chart of a certain condensate gas field, and has guiding significance on field paraffin precipitation problem treatment.

This invention relates to the field of oil pumping unit control system technology, and particularly to an intelligent control method and system for a rotary motor commutating oil pumping unit. An intelligent control method for a rotary motor commutating oil pumping unit includes the following steps: S1: During the process of the oil pumping unit collecting high-wax crude oil, downhole environmental data and oil pumping unit operating data are collected in real time; S2: A pressure wax precipitation model is constructed based on the downhole environmental data, and a wax precipitation risk index is calculated based on the pressure wax precipitation model; S3: The pumping unit's resistance strength index is calculated based on the pumping unit operating data and the wax precipitation risk index; S4: The target operating stroke of the pumping unit is optimized based on the resistance strength index; S5: The rotary motor is commutated based on the target operating stroke. This invention can achieve a dynamic balance between fluid supply capacity utilization and wax deposition suppression, and can dynamically adapt to different oil well geological conditions and crude oil wax precipitation characteristics.

The application discloses a multi-chemical agent comprehensive treatment method for improving low-temperature fluidity of crude oil. The method comprises the following steps: S1, heating crude oil to a first predetermined temperature above a wax melting point and keeping the temperature for a first predetermined time, then adding a pour point depressant to perform first stirring treatment at the first predetermined temperature; S2, after the first stirring is completed, cooling the crude oil to a second predetermined temperature between a wax precipitation point and a freezing point of the crude oil and keeping the temperature for a second predetermined time, then adding a heavy oil viscosity reducer to perform second stirring treatment at the second predetermined temperature, and completing the multi-chemical agent comprehensive treatment. The method utilizes multi-chemical agent comprehensive treatment, can further improve the low-temperature fluidity of the crude oil, and is expected to bring a new solution to solve problems in the process of crude oil pipeline transportation and storage.

The utility model discloses an indoor experiment evaluation device for shale oil well dynamic wax precipitation, and belongs to the technical field of oil and gas exploitation. Comprising an injection unit which is connected with a mixing unit and is used for conveying experimental fluid to the mixing unit; the mixing unit is connected with the pipeline simulation unit and is used for mixing experimental fluid and inputting the mixed experimental fluid into the pipeline simulation unit; the pipeline simulation unit is connected with the pressure control unit and is used for simulating a fluid flowing environment in a shaft; the temperature control unit is arranged below the pipeline simulation unit, is connected with the data processing unit and is used for adjusting the temperature of the pipeline simulation unit; the monitoring unit is connected with the pipeline simulation unit and the data processing unit and is used for monitoring the temperature, pressure and wax precipitation state in the pipeline simulation unit; the data processing unit is connected with the temperature control unit and the monitoring unit and used for collecting and processing experimental data. The device simulates the temperature, pressure and fluid flowing state of a complex environment in a shaft, and dynamically researches the paraffin precipitation behavior and rule of an oil well.

The invention discloses a crude oil viscosity reduction method, device, equipment, medium and product, and the method comprises the following steps: obtaining physical parameters of crude oil to be treated, the physical parameters including density, condensation point, wax precipitation point, wax content, total wax precipitation amount, colloid content and asphaltene content; generating an electric field parameter and a processor parameter according to the physical property parameter and a target viscosity reduction effect; and according to the electric field parameters and the processor parameters, performing viscosity reduction treatment on the crude oil to be treated through an electric field processor. The viscosity of crude oil to be treated is effectively reduced, and the fluidity of crude oil transportation is guaranteed.

The invention belongs to the technical field of oil and gas field development, and discloses a method and system for analyzing wax precipitation characteristics of crude oil in a shaft full temperature range, and the method comprises the steps: obtaining the average crystallization heat of a block wax sample, the shaft temperature range and a wax precipitation differential scanning calorimetry curve; according to the average crystallization heat of the block wax sample and a wax precipitation differential scanning calorimetry curve, calculating the wax content, the wax precipitation amount of crude oil and the wax precipitation amount of the crude oil at the corresponding unit temperature at different temperatures; according to the average crystallization heat of the block wax sample, the shaft temperature range and the wax precipitation differential scanning calorimetry curve, the wax precipitation amount at each temperature is calculated, the total wax precipitation amount at different temperatures is accumulated, and the wax precipitation degree in the shaft production period is determined. The average crystallization heat of a block wax sample and a wax precipitation differential scanning calorimetry curve are combined to determine the wax precipitation amount in a wellbore temperature range and the corresponding unit temperature wax precipitation amount at different temperatures, the wellbore wax precipitation condition is determined, and the situation that the cognition of an oil field on crude oil wax precipitation is generally limited to the wax precipitation point and the wax content is avoided.

The invention belongs to the technical field of railway locomotives, and particularly relates to an operation method of a locomotive winter fuel oil heating system, which is characterized in that heating links are respectively arranged on the inner side and the outer side of a fuel oil tank of a locomotive, heat energy generated in normal operation of the diesel locomotive is fully utilized, and extra electric energy is not consumed. The locomotive fuel tank has the beneficial effects that various heating means are added for the locomotive fuel tank, the fuel temperature of the locomotive fuel tank can be increased, the fuel fluidity can be improved, on the premise that normal operation of the locomotive is not affected, when the air temperature in winter in the north is low, the locomotive can normally use 0 # diesel oil to work, the wax precipitation phenomenon does not occur, and the service life of the locomotive is prolonged. The working time of low-grade diesel oil is prolonged even no-35 # diesel oil needs to be replaced, so that the fuel consumption cost in winter is reduced, the purposes of reducing cost and improving efficiency are achieved, the operation is flexible, the influence on an original oil supply system is reduced to the minimum, and the working efficiency of the diesel engine is not influenced.

The utility model provides a communication circuit board for intelligent analysis of edge data of an oil well and extraction equipment, which comprises a top-layer board body and a bottom-layer board body which are connected in a composite mode. The top layer plate body and the bottom layer plate body are jointly provided with a DI channel part, a DO channel part, an AO channel part, an AI channel part, a PWM channel part and an RS485 channel part; through the channels, safe and reliable transmission of multi-path data can be realized, and functions of data acquisition, intelligent remote control, indicator diagram acquisition and analysis, remote control, wax precipitation early warning, overload protection, load loss protection and the like of an oil well and extraction equipment can be realized, so that safe operation of the oil well and the extraction equipment is ensured; efficient interaction with a control platform can be achieved through remote communication, so that the real-time accuracy of data is guaranteed, efficient checking, remote control, analysis and management of oil wells and oil extraction equipment are facilitated, and powerful data support is provided for overhauling operation of the oil wells and the oil extraction equipment.

The utility model discloses an oil condensation and wax precipitation prevention device for a metering device, which comprises a transfer cylinder, an oil inlet and an oil outlet are respectively arranged on two sides of the transfer cylinder, a sealing end cover is further arranged on the transfer cylinder, and a detachable oil condensation prevention structure is arranged on the sealing end cover. The oil condensation prevention structure comprises a mounting sleeve, the mounting sleeve is arranged on the sealing end cover, a heat insulation seat is clamped on the mounting sleeve, an electric heating rod is arranged on the heat insulation seat, the electric heating rod penetrates through the sealing end cover and extends into a flow guide structure in the transfer cylinder, and the flow guide structure is used for filtering and guiding petroleum liquid. According to the petroleum oil metering device, petroleum oil can be preheated, the fluidity of the petroleum oil can be improved, the situation that the petroleum oil is condensed in the metering device to cause oil condensation and wax precipitation is prevented, the metering accuracy of the metering device is guaranteed, the petroleum oil can be guided, meanwhile, the petroleum oil can be filtered, and impurities are prevented from entering the metering device.

The utility model discloses a dewaxing device for sunflower seed oil processing, which comprises a water tank, a cooling tank is arranged in the water tank, the top of the cooling tank is fixedly communicated with a feed hopper, the bottom of the cooling tank is fixedly communicated with a connecting pipe, a filter tank is arranged below the water tank, the side wall of the water tank is fixedly connected with a motor, and the motor is fixedly connected with the water tank. A transmission rod is fixedly connected to the output end of the motor, two first stirring blades are fixedly connected to the outer wall of the transmission rod, and a plurality of second stirring blades are fixedly connected to the outer wall of the transmission rod. According to the device, cold water in the water tank can be stirred by arranging the first stirring blades so that the water temperature can be balanced, sunflower seed oil can be stirred by arranging the second stirring blades so that the sunflower seed oil can be cooled uniformly, and the wax precipitation effect is good; and the intercepted solid wax can be cleaned by arranging the filter screen which can be taken out in a detachable mode, operation is easy, the machining efficiency is improved, and blockage of the filter screen is avoided.