25 results about "Condensation point" patented technology

The invention is applicable to the technical field of crude oil heating, and provides skid-mounted equipment for heating crude oil at a well group site, the skid-mounted equipment comprises a base, a control box, a crude oil heat exchange tank and a heating tank, a heat exchange coil is arranged in the crude oil heat exchange tank, the heating tank is communicated with the heat exchange coil, fixing frames are fixed on two sides of the base, and two supporting rods are hinged in the fixing frames; rollers are installed at the bottoms of the supporting rods, sliding sleeves sleeve the supporting rods, a lead screw is rotationally installed on the fixing frame, push rods are hinged to the two ends of the lead screw through outer sleeves, and the ends, away from the outer sleeves, of the push rods are hinged to the sliding sleeves; a worm gear is fixed to the middle of the lead screw, and a worm meshed with the worm gear penetrates through the fixing frame. Accurate control and constant-temperature maintenance of the temperature of the crude oil are achieved, the high-condensation-point crude oil is effectively prevented from being solidified in the conveying and storage process, and the flowing smoothness of the crude oil is guaranteed. By accurately controlling the temperature of crude oil, accumulation of sediments at the bottom of the storage tank due to too low temperature is prevented, and the cleaning workload and downtime are reduced.

The invention provides a cooling device, process equipment and a substrate manufacturing method. The cooling device is used for cooling gas discharged by the process equipment. The cooling device comprises a pre-cooling unit and a secondary cooling unit which are sequentially arranged on an exhaust pipeline of the process equipment in the gas exhaust direction. The pre-cooling unit is provided with a gas inlet end and a gas outlet end, the pre-cooling unit comprises at least one cooling group arranged between the gas inlet end and the gas outlet end, the pre-cooling unit is configured to be used for cooling gas to a first temperature, and the first temperature is higher than a condensation point at which the gas is solidified; the secondary cooling unit comprises at least one cooling pipe with the inner diameter larger than or equal to the threshold value and a cooling assembly arranged on the outer wall of the cooling pipe, the cooling pipe communicates with the exhaust end, the secondary cooling unit is configured to be used for cooling the gas to the second temperature, and the second temperature is smaller than the first temperature. According to the cooling device, the process equipment and the substrate manufacturing method provided by the invention, two-step cooling of the process gas can be realized, and phenomena such as blockage of the exhaust pipe are reduced.

The invention relates to the technical field of oil product detection, in particular to a full-automatic condensation point determinator and a determination method.The full-automatic condensation point determinator comprises a base and a test tube, the top of the base is fixedly connected with a mounting base, the surface of the base and the surface of the mounting base are provided with a test bath mechanism and a supporting mechanism, and the test bath mechanism enables a motor to drive a test bath to rotate; the rotation angle of the motor is controlled through a preset program, precise positioning is achieved, the tedious operation of hole-by-hole adjustment of the original structure is avoided, the rotating shaft is locked through mechanical clamping, angle deviation in the testing process is prevented, then manual adjustment is replaced by the motor and the electric push rod, and the test efficiency is improved. The double locking effect is achieved, accidental displacement can be prevented, and precision and efficiency are improved; according to the clamping mechanism, the four arc-shaped clamping plates apply uniform radial pressure through the first springs to clamp the outer wall of the test tube, the inner diameters of the clamping plates are gradually increased from top to bottom, and the clamping mechanism is compatible with test tubes with different outer diameters.

The invention relates to the technical field of fuel oil, in particular to fuel oil produced from biological heavy oil and a preparation method thereof. Comprising the following substances in parts by weight: 65-85 parts of biological heavy oil; 15 to 35 parts of biological esters; 10 to 22 parts of a nanofluid stabilizer; 2-5 parts of an antioxidant; 1-3 parts of a dispersant; wherein the nano-fluid stabilizer comprises graphene oxide quantum dots and polyether amine, the nano-fluid stabilizer is added, the precipitation rate after 24-month storage is controlled to be smaller than or equal to 0.8% through the polarity anchoring effect of the graphene oxide quantum dots and the three-dimensional network barrier effect of the polyether amine, and compared with the precipitation rate larger than 5% of a traditional stabilizer, the precipitation rate of the nano-fluid stabilizer is controlled to be smaller than or equal to 0.8%; the precipitation rate of the fuel oil is reduced by more than 95%; the polyether amine long chain can destroy hydrocarbon crystals, so that the condensation point of the fuel oil is as low as-40 DEG C, and compared with the traditional fuel oil which is solidified at-20 DEG C, the fuel oil disclosed by the invention has a low-temperature anticoagulation effect.

The application relates to the technical field of oil product detection, in particular to a full-automatic condensation point tester and a determination method, which comprises a base and a test tube, the top of the base is fixedly connected with a mounting seat, the surface of the base and the mounting seat is provided with a test bath mechanism and a supporting mechanism, the test bath mechanism enables the test tube placed in the test bath mechanism to be adjusted at multiple angles by rotating the test bath driven by a motor, replaces the original manual bolt structure, controls the rotating angle of the motor through a preset program, realizes accurate positioning, avoids the complicated operation of adjusting each hole in the original structure, prevents the angle from deviating during the test by mechanically clamping and locking the rotating shaft, and then the motor and the electric push rod replace manual adjustment, realize double locking effect, can prevent accidental displacement, and improve the accuracy and efficiency; the clamping mechanism enables four arc-shaped clamping plates to exert uniform radial pressure on the outer wall of the test tube through the first spring, the inner diameter of the clamping plate is designed to gradually increase from top to bottom, and different outer diameter test tubes are compatible.

An electric machine (1, 1a, 1b) is described, comprising a machine housing (2), a stator (6) arranged in the machine housing (2), and a rotor (9) rotatably mounted in the machine housing (2) relative to the stator (6). The machine housing (2) encloses an interior space (B) of the electric machine (1, 1a, 1b) and separates it from an exterior space (C). Furthermore, the electric machine (1, 1a, 1b) includes an adsorption element (19) arranged in the interior space (B), which can be actively cooled below the condensation point of the air in the interior space (B) for absorbing water vapor or water. A vehicle (29) with such an electric machine (1, 1a, 1b) and a method for operating such an electric machine (1, 1a, 1b) are also described.

The invention provides a diesel oil pour point depressant based on a multipolymer, and belongs to the technical field of fuel additives. The diesel oil pour point depressant is prepared by the following steps: firstly, constructing a multipolymer which takes 2-acrylamide-2-methylpropanesulfonic acid, acrylic acid, acrylamide and anisd as unit bodies; on the basis, the pour point depressant is compounded with polyacrylate, methacrylic acid high-carbon alcohol ester, fatty alcohol-polyoxyethylene ether, vinyl benzoate, polyethylene glycol, cyclohexyl vinyl ether, monoisopropanolamine, glyceryl monostearate, N-hexadecyl methacrylamide and oleic acid polyoxyethylene ester to form the pour point depressant formula. Compared with the prior art, the average condensation point and the average cold filter plugging point of commercially available 0 # diesel oil and commercially available-10 # diesel oil respectively added with the diesel oil pour point depressant provided by the invention are lower, which shows that the diesel oil pour point depressant provided by the invention has better fluidity and pour point depressing effect than conventional pour point depressants. Moreover, black smoke during diesel combustion is obviously reduced, the combustion time is prolonged by 12%-15%, and a certain fuel-saving effect is achieved.

The invention discloses a paraffin control lifting system and a using method thereof.The paraffin control lifting system comprises ground equipment and a wellhead and further comprises a lifting pipe column, and the lifting pipe column comprises a hollow rod, an oil pipe, a check valve and an oil well pump; the oil pipe is connected with a wellhead, the hollow rod is arranged in the oil pipe, the upper end of the hollow rod penetrates through the wellhead, and the check valve is arranged at the lower end of the hollow rod; a plunger of the oil well pump is directly connected with the hollow rod or indirectly connected with the check valve or directly connected with the check valve. A pump cylinder of the oil well pump is connected with an oil pipe; the ground equipment comprises an automatic dosing device, and the automatic dosing device is communicated with the hollow rod. Under the condition that ground equipment is not moved, the paraffin removal adding depth is deepened from 1000 m to 1500-1800 m, and the problem that the condensation point is increased due to the influence of extraction is effectively solved; the problem that hot water circulation well washing lags behind is solved; and waste caused by conventional manual chemical adding or pump blocking caused by untimely chemical adding is reduced.

The application provides a preparation method and application of a ternary copolymer EVA diesel pour point depressant, and belongs to the technical field of petroleum chemical additives. The ternary copolymer EVA diesel pour point depressant with an ethylene content of 60% to 65% is successfully prepared by introducing a third monomer into EVA, using an alkane compound as a solvent, adopting a medium-pressure polymerization process, and in a way of step feeding and continuously dropping the remaining raw materials. The introduction of the third monomer provides suitable polar groups and steric hindrance effects, effectively protects ester groups and improves the dispersibility of the pour point depressant in diesel. The ternary copolymer EVA diesel pour point depressant has a significant pour point depression effect, can reduce the diesel condensation point by 15 to 23 DEG C, and can reduce the cold filter plugging point by 8 to 14 DEG C. Compared with the existing high-pressure process, the application significantly reduces the equipment investment and energy consumption, the process is simple and easy to industrialize, provides an economic and efficient scheme for improving the low-temperature fluidity of diesel, and has a good popularization and application prospect.

The invention provides a method for testing the condensation point of crude oil through a coupon method, and belongs to the technical field of oil transportation and rheology. The hanging piece is hung in the oil sample to be measured through the tension meter, the tension borne by the hanging piece in the oil sample to be measured is measured in a slow cooling mode, and when no gel structure is formed in the oil sample to be measured, the tension borne by the hanging piece is basically unchanged; after a gelling structure in an oil sample to be measured is formed, a downward normal stress is generated on the hanging piece based on the volume shrinkage characteristic of crude oil, so that the tensile force of the tension meter is remarkably increased, the tensile force is directly displayed on the readings of the tension meter, the temperature at the moment is recorded, and then the readings of the subsequent three tension meters are recorded; errors caused by factors such as external force are avoided, so that the condensation point of the crude oil can be directly judged according to the reading of the tension meter. The method is simple and applicable to operation, objective in judgment mode and reliable in principle, and can accurately judge the temperature of the gelling structure generated in the cooling process of the crude oil, so that the condensation point of the crude oil is directly judged.

The invention relates to an automotive liquid wax RE fuel and a preparation method thereof. The automotive liquid wax RE fuel comprises the following components in percentage by weight: 30-40% of liquid wax oil; 20%-30% of C12; 5%-10% of palm oil; 5%-10% of methanol; 5%-10% of ethanol; 2.5%-5% of isopropanol and 0.2%-0.5% of a pour point depressant; 0.01%-0.2% of an antioxidant; 1%-5% of methyl tertiary butyl ether; 0.05%-0.2% of a dispersion cleaning agent; 1%-3% of a cetane number improver; 0.5%-1% of a surfactant; and 0.01%-0.05% of a carbon deposition cleaning agent. The prepared liquid wax RE fuel for the vehicle is low in condensation point, not prone to solidification at the low temperature, higher than the national standard in flash point, free of fire disasters and poisoning risks, free of hazardous chemicals, convenient to store and transport, capable of being stored and transported through common iron, stainless steel and plastic containers, free of burning and explosion risks, resistant to burning compared with existing diesel oil of various purposes on the market, and lower in comprehensive use cost.

The invention provides a concrete initial setting time on-site determination device and determination method, the concrete initial setting time on-site determination device comprises a pressing block, the pressing block is a solid cylinder, a connecting rod is fixed at the center of the upper surface of the pressing block, and a circular level is fixed at the upper end of the connecting rod. Based on the clear physical principle that the mechanical stability of the device is suddenly changed due to the increase of the surface strength of the critical stability concrete, the result of judging the initial setting time is objective and accurate, and the pressure intensity of the device on the concrete is set in a critical interval close to the lower limit of the bearing capacity of the initial setting concrete; the sensitivity and the reliability of stability transformation of the device at an initial condensation point are ensured; and the device is extremely simple and durable, extremely convenient to operate, low in cost and easy to popularize.

The invention relates to the technical field of oil-gas-water three-phase mixed transportation fluid condensation point experimental testing, in particular to a device for testing the lowest flowable temperature of a mixed transportation pipeline and a using method. The device comprises a water bath box, a coil pipe, a first pressure sensor, a second pressure sensor, an ultrasonic measuring module, a temperature adjusting device and a control unit; and a plurality of coils are coiled in the water bath box. The device is reasonable and compact in structure, during use, mixed liquid of water and methanol is injected into the water bath box, the coil pipe is immersed in the mixed liquid of water and methanol, and the temperature adjusting device is arranged, so that cooling capacity can be provided for the mixed liquid in the water bath box, the temperature of the mixed liquid is reduced, and the service life of the water bath box is prolonged. The ultrasonic transmission time of fluid in the coil pipe can be measured by arranging the ultrasonic transmitting probe, the ultrasonic receiving probe and the ultrasonic measuring module, one-way flowing of all fluid is guaranteed by arranging the one-way valve, and the minimum flowable temperature of mixed transportation fluid on site under multiple influence factors can be accurately measured.

The invention relates to the technical field of petroleum testing devices, in particular to an automatic petroleum condensation point and pour point tester which comprises a tester body, two electric cabinets are fixedly mounted at the front end of the tester body, a switching power supply is fixedly mounted at one end of the tester body, and a printer is fixedly mounted at the front end of the tester body. A touch screen is fixedly mounted at the front end of the tester body, a low-temperature bath box is fixedly mounted in the tester body, a first mounting box is fixedly connected to the interior of the tester body, a clamping assembly is arranged in the first mounting box, and the clamping assembly comprises a first mounting seat, a second mounting seat, a first rotating column and a second mounting box. A first motor drives a worm to be meshed with a worm gear, a first rotating column and a first gear are driven to rotate, a rack sleeve is driven to linearly move, a second gear drives a two-way threaded rod to rotate, the two clamping arms draw close oppositely, stable clamping is formed, and it is ensured that the posture of a sample tube is stable in the testing process.

Integrated general fuel and its preparation method and system. Its indexes are as follows: density at 20℃ is 0.775-0.830 g / cm 3 ; freezing point ≤-47℃; net heat value ≥42.8 MJ / Kg; cetane number ≥45; condensation point ≤-50℃; cold filter plugging point ≤-50℃; closed flash point ≥50℃; polycyclic aromatic hydrocarbon content ≤1 wt%; 10% recovery temperature ≤205℃; 50% recovery temperature ≤232℃; final boiling point ≤300℃. Its preparation method comprises: (1) coal direct liquefaction oil is subjected to fractionation, hydrofining and separation in sequence to obtain coal direct liquefaction full distillate; (2) coal indirect liquefaction oil is subjected to the foregoing process to obtain coal indirect liquefaction full distillate; (3) coal direct and indirect liquefaction full distillates are cut and blended. The integrated general fuel meets the main indexes of diesel and jet fuel; its preparation method and system are simple and low in cost.

The application discloses a crude oil condensation point prediction method and device, electronic equipment and storage medium, and relates to the technical field of petroleum industry. The method comprises the following steps: obtaining to-be-predicted feature data corresponding to a crude oil condensation point; inputting the to-be-predicted feature data into a target crude oil condensation point prediction model to obtain a crude oil condensation point prediction result output by the target crude oil condensation point prediction model; and wherein a target hyperparameter of the target crude oil condensation point prediction model is generated based on an improved adaptive genetic algorithm. The technical scheme of the embodiment of the application solves the technical problem that the prediction accuracy of a traditional crude oil condensation point prediction model is not high, a dynamic updating mechanism is lacked, and intelligent updating of the crude oil condensation point prediction model cannot be realized, effectively improves the accuracy and adaptability of the prediction model, and realizes dynamic updating of the prediction model in combination with the improved adaptive genetic optimization algorithm.

The present invention aims to provide a seamless steel tube and a method for manufacturing the same. A seamless steel tube of the present invention is a seamless steel tube having desirable resistance to corrosion by sulfuric acid condensation point, the seamless steel tube having a composition that includes, in % by mass, C: 0.01 to 0.12%, Si: 0.01 to 0.8%, Mn: 0.10 to 2.00%, P: 0.050% or less, S: 0.040% or less, Al: 0.010 to 0.100%, Cu: 0.03 to 0.80%, Ni: 0.01 to 0.50%, Mo: 0.01 to 0.20%, Sb: 0.002 to 0.50%, Cr: 0.004% or less, W: 0.0.02% or less, and the remainder Fe and incidental impurities, and a structure including a ferrite phase with an area percentage of 50 to 65%, a pearlite phase with an area percentage of 2% or less, and one or both bainite phases and a martensitic phase representing the remainder, the seamless steel tube having an elongation strength of 230 MPa or more and a tensile strength of 380 MPa or more.

The utility model belongs to the technical field of pipeline sampling devices, and particularly relates to a high-condensation-point material pipeline sampling device which comprises a pipeline valve body, a sample cup, a valve clack, a valve rod, a hand wheel and a quantitative cup, the sample cup is connected to the outer side of the pipeline valve body, a lower valve rod is arranged in the sample cup, one end of the lower valve rod is connected with a lower valve clack, and the other end of the lower valve rod is connected with a lower hand wheel. The inner wall of the pipeline valve body is connected with a quantitative cup, the quantitative cup comprises an upper inlet and a lower outlet, the lower valve clack can abut against or be separated from the lower outlet by rotating the lower hand wheel, and the upper valve clack can abut against or be separated from the upper inlet by rotating the upper hand wheel. The sampler disclosed by the utility model is directly connected with a p-nitroaniline high-condensation-point material pipeline, so that the effectiveness of a sample is ensured; the quantitative cup is always positioned in the pipeline valve body in the sampling process, so that the problem of untight sealing caused by solidification of materials at a sampling port due to temperature and pressure reduction of the materials is solved; the specification of the quantitative cup can be set according to sample demand.

The invention relates to the technical field of petroleum performance detection, and discloses an automatic condensation point and cold filter plugging point measuring device and method. The automatic condensation point and cold filter plugging point measuring device comprises a measuring host, a mounting module and a control module, the mounting module is used for mounting and sealing the detection module at the detection station, and comprises a container bearing piece, a fixed connecting piece, a pressing driving piece and an adjustable sealing piece; the container bearing part is used for being connected with the detection module and bearing a storage container containing a to-be-detected medium. According to the invention, the digital closed-loop control of the pressing force is realized in the test tube mounting link, the consistent mechanical state and optimal thermal contact of each mounting are ensured, and the manual operation difference is eliminated; a sealing assembly capable of being dynamically adjusted is adopted in the sealing link, and interface change caused by thermal expansion and cold contraction can be compensated in real time according to pressure feedback in the whole testing process, so that stable and reliable long-term sealing is maintained in a wide temperature range.

The application provides an oil pipeline online condensation point measuring device and a use method thereof. The oil pipeline online condensation point measuring device comprises a shell, a first pipeline, a first branch box, a collecting box, a first branch cylinder, a blocking plate and a third opening. The first pipeline is installed in the shell. Two ends of the first pipeline correspond to two ends of the shell and are exposed on the outside. The first branch cylinder is installed in the first pipeline. One end of the first branch cylinder penetrates the first pipeline and the top of the first branch box and is located in the first branch box. The first branch box is installed in the shell. The collecting box is installed in the first branch box and is located below one end of the first branch cylinder. The third opening is arranged on the first branch cylinder. The blocking plate penetrates the third opening and is slidingly installed in the first branch box.

The invention provides an oil pipeline transportation online condensation point measuring device and a using method thereof. An oil pipeline transportation on-line condensation point measuring device comprises a shell, a first pipeline, a first supporting box, a collecting box, a first supporting cylinder, a blocking plate and a third opening, the first pipeline is installed in the shell, the two ends of the first pipeline penetrate through the two ends of the shell in a one-to-one correspondence mode and are exposed to the outer side, the first supporting cylinder is installed in the first pipeline, and the blocking plate is installed on the first supporting cylinder. One end of the first supporting cylinder penetrates through the first pipeline and the top of the first supporting box and is located in the first supporting box, the first supporting box is installed in the shell, and the collecting box is installed in the first supporting box and located below one end of the first supporting cylinder; the third opening is formed in the first supporting cylinder, and the blocking plate penetrates through the third opening and is installed in the first supporting box in a sliding mode.

The invention provides a fuel tank switching control method and system of an operation machine and the operation machine, and belongs to the technical field of operation machines. The method includes transmitting a start signal to an engine of the work machine when the start signal is received; under the condition that a temperature detection result, collected by a temperature sensor, of fuel oil in a main oil tank of the operation machine is larger than or equal to a set temperature threshold value, a conversion device is controlled to be switched from an auxiliary oil tank to the main oil tank to supply oil to the engine; wherein the main oil tank is loaded with first fuel oil, the auxiliary oil tank is loaded with second fuel oil, and the condensation point of the second fuel oil is lower than that of the first fuel oil. The fuel tank switching control method is used for solving the problem of how to provide the fuel tank switching control method of the operation machine capable of achieving both the automation degree and the efficiency during operation in the severe cold area.

1. The name of the design product: heavy oil automatic sampler. 2. The use of the design product: for heating, temperature control, and pressurizing high condensation point oil before sending it into near-infrared flow cell. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: front view.

The invention relates to the technical field of esterification gas condensation, in particular to an esterification condensation device which comprises a box body, a water inlet pipe, a water outlet pipe and a gas inlet pipe are arranged on the box body, a plurality of first heat exchange panels and second heat exchange panels are alternately arranged in the box body, and the second heat exchange panels are in sliding sealing fit with the inner wall of the box body. On the basis of heat exchange and condensation of gas, the condensation point of the gas is increased in a pressurization mode, and then the condensation efficiency is improved; according to the closed supercharged condenser, gas is condensed in a closed supercharged mode, compared with a traditional tubular condenser, the closed supercharged condenser is not affected by gas inlet flow, the extraction rate of ester substances is higher, and resource waste caused by the too low extraction rate of the ester substances is avoided; in the gas pressurization condensation working process, the air pressure in the condensation chamber is always a constant value, the stability of the gas condensation rate is high, and the situation that the cylinder body, the second heat exchange panel and other components are damaged due to excessive pressurization is prevented.

The present invention provides a dynamic modeling method for a planetary gear train that takes into account the tooth meshing process and structural flexibility, including: obtaining the free vibration equations of the condensed planet carrier and internal gear ring through substructure condensation; establishing a meshing unit model of the planetary gear train to obtain a meshing vector; equivalently decomposing the comprehensive meshing stiffness of the gear pair to each pair of meshing teeth according to the meshing vector according to its contact ratio; performing support unit modeling to obtain the coupling stiffness matrix between the pin condensation point and the corresponding planetary gear node; establishing the dynamic equation of the shaft segment beam element; performing exciting force unit modeling to obtain the error exciting force generated by the gear meshing error and the exciting force generated by the virtual vibration linear displacement of the internal gear ring; and establishing a dynamic model of the planetary gear train. The present invention can solve the technical problems in the prior art that it is impossible to consider the geometric characteristics of complex components, the calculation accuracy is low, the large-scale finite element calculation amount is large, the system-level modeling and analysis are difficult, and it is not applicable to the analysis of variable speed and variable load of the planetary gear train.