566 results about "Oil cooling" patented technology

The invention relates to an aircraft electric drive oil cooling structure which comprises an outer rotor assembly, a stator assembly, a controller assembly, an oil pump and a heat dissipation assembly, the stator assembly comprises a stator shell and a winding, a sealing cover is further fixed to the outer side of the winding, and a cooling cavity is formed between the sealing cover and the stator shell; a bottom plate is further arranged at the bottom of the stator shell, the controller assembly is fixed in a mounting cavity formed by the bottom plate and the stator shell and comprises a circuit board and a cooling plate which are close to each other, the circuit board is connected with the winding, an oil duct A is further arranged on the bottom plate, an oil inlet pipe and an oil outlet pipe are arranged on the cooling plate, and an oil duct B communicated with a cooling cavity is further arranged on the bottom plate; the heat dissipation assembly comprises a heat dissipation fin set and a fan assembly, the heat dissipation fin set and the oil pump are both fixed to the lower portion of the bottom plate, heat dissipation fins form a ring and are arranged outside the oil pump in a surrounding mode, the heat dissipation fin set, the oil pump and the bottom plate are communicated with one another, and the fan assembly is fixed to the lower portion of the heat dissipation fin set. Efficient, light-weight, high-integration-level and reliable heat dissipation of the electric drive of the aircraft is achieved.

The application discloses a motor oil cooling system and a motor oil cooling method. The motor oil cooling system comprises an oil cooling shell assembly, a stator assembly arranged in the oil cooling shell assembly, and a rotor assembly arranged in the stator assembly and rotationally connected with the stator assembly through a bearing. An end cover assembly is arranged at the right end of the oil cooling shell assembly. A shell oil passage is arranged between the oil cooling shell assembly, the stator assembly and the end cover assembly. A rotor oil passage is arranged in the rotor assembly. A shell oil inlet channel and a shell oil return channel are arranged on the oil cooling shell assembly and are communicated with the shell oil passage. A rotor oil inlet channel is arranged on the rotor assembly and is communicated with the rotor oil passage. The rotor oil passage is communicated with the shell oil return channel. The motor can be efficiently and sufficiently cooled by simultaneously cooling the stator core, the stator winding, the rotor core, the bearing and other heating parts, and the motor has better process performance and cost advantage.

The invention belongs to the technical field of titanium and titanium alloy machining, and relates to a Ti65 alloy large-specification bar capable of improving the flaw detection level and a forging technology of the Ti65 alloy large-specification bar. The forging technology comprises the following steps that a Ti65 cast ingot is heated to 1150-1200 DEG C, and air cooling is conducted after one-heating-time, one-upsetting-one-drawing cogging is conducted; the blank is heated to a beta-phase region, and air cooling is conducted after one-heating-time one-upsetting-one-drawing forging is conducted; the blank is heated to an alpha + beta phase region for heat preservation and then is subjected to oil cooling; the blank is heated to an alpha + beta phase region to be subjected to one-heating-number two-upsetting and two-drawing forging, and then air cooling is conducted; the blank is heated to a beta-phase region for heat preservation and then is subjected to oil cooling; the blank is heated to an alpha + beta phase region to be subjected to four to six heating times, one-upsetting and one-drawing forging, and then air cooling is conducted; and heating the blank to an alpha + beta phase region for forming. The Ti65 alloy bar with the diameter of 300-450 mm prepared by the process has a uniform equiaxed structure and a good flaw detection level, and the clutter level of manual semi-sonic path distance flaw detection by adopting a flat-bottomed hole with the diameter of phi 1.2 in the diameter direction is lower than-9 db.

The utility model relates to the technical field of oil cooling motor structures capable of rapidly reducing oil temperature, and discloses an oil cooling motor structure capable of rapidly reducing oil temperature, which comprises a bottom plate and a motor main body, a rapid oil temperature reducing assembly is arranged at the top of the bottom plate, and the rapid oil temperature reducing assembly comprises an oil pump, a circulating pump, a fan frame and radiating fins. The oil pump is connected with an oil tank through an input pipe, the oil pump is connected with a cooling oil disc through an output pipe, and through the arrangement of the rapid oil temperature reducing assembly, a worker starts the oil pump, pumps cooling oil from the oil tank and injects the cooling oil into the cooling oil disc, the cooling oil disc is attached to the outer wall of the motor body, operation heat is absorbed, the motor is prevented from being overheated, and stable operation is guaranteed; the circulating pump pumps out hot oil from the cooling oil tray and feeds the hot oil into the heat dissipation pipe, the heat dissipation fins on the heat dissipation pipe increase the heat dissipation area and cooperate with the fan in the fan frame to accelerate heat dissipation, the cooled oil returns to the oil tank through the return pipe, efficient circulation of the cooling oil is achieved, and the motor is continuously cooled.

A lubricating oil pipeline forming a U-shaped channel and a refrigerant containing cavity surrounding the pipeline are arranged in a box body, a refrigerant inlet is formed in the bottom of the refrigerant containing cavity, and a refrigerant outlet is formed in the top of the refrigerant containing cavity. A refrigerant inlet and an oil inlet section of the U-shaped channel are arranged on the same side, and a refrigerant outlet and an oil outlet section of the U-shaped channel are arranged on the same side, so that a heat exchange mode that refrigerants and lubricating oil flow reversely in a high-temperature area and flow downstream in a low-temperature area is formed; heat exchange fins are arranged on the outer wall of the U-shaped channel in the circumferential direction. A porous ceramic area used for adsorbing bubbles can be arranged on the inner side wall of the box body. Through countercurrent flow heat exchange of the U-shaped pipeline, the heat exchange efficiency is improved, the temperature of lubricating oil can be stably controlled to be smaller than or equal to 40 DEG C, the problem of lubrication failure caused by too high oil temperature of the disc separator is solved, and therefore the reliability of the disc separator under long-term high-load operation and the service life of a bearing are guaranteed.

The invention provides a composite immersed cooling liquid as well as a preparation method and application thereof. Comprising a dispersion phase, a continuous phase, an emulsifier and an additive, the dispersion phase is fluorine cooling liquid, the continuous phase is oil cooling liquid, the emulsifier is one or more compounded nonionic surfactants, and the HLB value of the emulsifier is 4-9 or 10-18; according to the composite immersed cooling liquid disclosed by the invention, the advantages of high heat conductivity of the oil phase and high safety (non-combustibility and high dielectric strength) of the fluorine phase are ingeniously combined, and 1 + 1gt is realized; 2, the effect is achieved; the oil phase with high cost performance is used for replacing most expensive fluorine phases, and the overall material cost is reduced by 40%-60% compared with that of pure fluorine cooling liquid; the nano-scale microemulsion is formed through the specific emulsifier, the fundamental problem that a traditional mixed solution is inevitably layered is solved, and the shelf life is long; the cooling liquid disclosed by the invention has good material compatibility, and the problem that a pure fluorine liquid swells some sealing materials is avoided.

The invention relates to the technical field of metal heat treatment, in particular to a silicon alloy steel bearing ring high-temperature salt bath quenching process for a high-temperature load environment, which comprises the following steps: S1, carrying out surface sand blasting treatment on a silicon alloy steel bearing ring; s2, stepped heating-heat preservation-cooling treatment is carried out, and the uniformly austenitized ferrule is obtained; s3, the uniformly austenitized ferrule is immersed in a composite salt bath; s4, staged cooling treatment of an air cooling stage and an oil cooling stage is conducted in sequence; s5, the martensite matrix ferrule is subjected to subzero treatment and staged heating; and S6, multi-stage tempering treatment with different temperature gradients is conducted, and the final high-temperature bearing ring is obtained. Through the combined process of stepped austenitizing, composite salt bath ultrasonic quenching, graded cooling, deep cooling and multi-stage tempering, homogenization and stabilization of the structure of the bearing ring are achieved, and the dimensional stability and the tempering resistance of the bearing ring in the high-temperature load environment are improved.

The utility model relates to the field of conducting rings, in particular to a conducting ring for an oil cooling shaft, which comprises a conducting ring casting, the conducting ring casting is of an annular structure, the inner wall of the conducting ring casting is fixedly connected with a mounting ring, carbon fiber yarns which are arranged at equal intervals are mounted on the mounting ring, and shaft static electricity is transmitted to the conducting ring casting through the carbon fiber yarns. According to the utility model, shaft static electricity generated by the motor rotating shaft is transmitted to the conductive ring casting by using the carbon fiber yarns and is further transmitted to the motor shell, so that the shaft static electricity is effectively prevented from being accumulated on a bearing or other conductive parts, the risks of local overheating and bearing abrasion are reduced, the operation reliability of the motor is remarkably improved, and the service life of the motor is remarkably prolonged. Through the arrangement of the rubber oil baffle plate, not only is excessive engine oil prevented from being in contact with the carbon fiber yarns, but also the rubber oil baffle plate is convenient to replace and clean through the detachable locking nut and positioning block structure, and the maintenance cost and time are reduced.

The invention discloses a heat treatment method for regulating and controlling lamellar structures of TiAl alloy forgings, and belongs to the technical field of heat treatment of alloy materials. According to the method, the obtained forged TiAl alloy is placed in a heat treatment furnace with the temperature of T alpha + / -10 DEG C, after heat preservation is conducted for 5-30 min, multi-stage step-by-step cooling is conducted, the TiAl alloy with the fine near-lamellar structure is obtained, the multi-stage step-by-step cooling mode comprises two modes, the first mode is furnace cooling + air cooling, and the second mode is furnace cooling + air cooling + oil cooling; by regulating and controlling the critical temperature point, the cooling speed and possible short-time heat preservation of each cooling stage, accurate control over lamellar regularity, lamellar cluster size and grain refinement degree is achieved, generation of Widmannstatten structures and metastable structures is effectively inhibited, and the structure uniformity and the strength and plasticity matching performance are remarkably improved.

The utility model provides an intelligent temperature control device of a wind power gear box oil cooling system, which comprises a wind power gear box, an oil outlet pipe is fixedly communicated with the surface of the wind power gear box, a heat dissipation mechanism is arranged, and lubricating oil enters a first communicating pipe through the oil outlet pipe and exchanges heat with air through heat dissipation fins. The temperature of the lubricating oil is detected through the first temperature sensor, the semiconductor chilling plate is started, cooling liquid in the cooling cavity is cooled, the low-temperature cooling liquid exchanges heat with hot lubricating oil flowing through the second communicating pipe, the lubricating oil is cooled again, the cooled lubricating oil flows back into the wind power gear box, and circulation is conducted. When the air temperature is low, the reversing valve is started, the lubricating oil directly flows back into the wind power gear box through the backflow pipe, the lubricating oil is cooled after being rapidly heated, and the situation that the lubricating effect is poor due to the fact that the viscosity of the lubricating oil is large at the low temperature is avoided.

The utility model discloses a cylinder penetrating piece shell of an oil cooling motor, which comprises a shell body, the shell body is cylindrical, a baffle ring protruding inwards is arranged on the inner wall of the shell body, a connecting part is formed on the end face of the outer surface of the shell body, the shell body is installed and positioned by the connecting part, an end plate is formed at the other end of the shell body, and the end plate is connected with the baffle ring. An opening is formed in the center of the end plate, the sealing plug is inserted into the shell, the baffle ring and the end plate are located at the two ends of the sealing plug, the baffle ring is arranged on the inner wall of the shell, the sealing plug is limited through the baffle ring, the baffle ring and the sealing plug are in interference fit, the assembling efficiency of the sealing plug is improved, and the sealing plug is convenient to assemble. And meanwhile, the end plate limits the other end of the sealing plug, blocks the two ends of the sealing plug and fixes the sealing plug.

The application provides a heat comprehensive utilization system based on a lime kiln and a combustion beam, belongs to the technical field of calcining equipment, and comprises a beam body, a cooling oil circulation pipeline, a steam pipeline and a combustion air pipeline; the cooling oil circulation pipeline is in communication with an oil cooling cavity. A fan is arranged on the combustion air pipeline, the fan can make gas flow to form an air flow; the steam pipeline is in communication with a gas cooling cavity, a steam valve is arranged between the steam pipeline and the gas cooling cavity, the steam pipeline further has a tempering branch in communication with a hollow cavity, and a tempering valve is arranged on the tempering branch; the combustion air pipeline is in communication with the gas cooling cavity; a combustion valve is arranged between the combustion air pipeline and the gas cooling cavity, the combustion air pipeline further has a combustion branch in communication with the hollow cavity, and an air inlet valve is arranged on the combustion branch. The heat comprehensive utilization system based on the lime kiln and the combustion beam provided by the application realizes energy saving to the maximum by means of liquid and gas collaborative cooling.

The present disclosure provides an engine oil cooling structure of an engine. In the engine oil cooling structure of an engine, the engine includes a crankcase, the crankcase is provided with an oil filter mounting chamber having a cylindrical shape, the cooling structure includes a water channel, a water inlet of the water channel communicates with a water pump, the crankcase is further provided with a main oil channel, the crankcase is further provided with a heat conducting thin wall, an inner cavity of the heat conducting thin wall form the oil filter mounting chamber, the oil filter mounting chamber communicates with the main oil channel, the water channel is arranged around an outer side wall of the heat conducting thin wall, and a water outlet of the water channel communicates with a cooling water channel arranged in the same direction as and adjacent to the main oil channel.

This utility model belongs to the technical field of motorcycle parts, and relates to an oil cooling structure for a motorcycle engine. It includes a crankcase, in which a crankshaft is housed and filled with engine oil. One end of the crankshaft extends out of the crankcase and is fitted with a fan. The fan is covered by a fan shroud, the outer end of which has an axial air inlet and a circumferential air outlet on its side wall. Several cooling fins are arranged on the side of the crankcase near the fan shroud. The inner side of the cooling fins contacts the engine oil and transfers heat, while the outer side is covered by a radial extension of the fan shroud. An air outlet communicating with the air outlet is provided on the radial extension of the fan shroud. The oil cooling structure for a motorcycle engine provided by this utility model can significantly improve the oil cooling effect of the engine.

The utility model discloses an oil cooling motor, include: casing, stator core, seal is located in the inside of casing, and stator core includes: first core part, and the inner wall of casing is defined with first oil inlet channel together with the outer surface, second core part is equipped with a plurality of second oil inlet channel who sets up interval along the circumference, and each second oil inlet channel is linked together with first oil inlet channel, third core part is equipped with a plurality of oil passage who sets up interval along the circumference, and the one end of each oil passage along the axial direction corresponds and links together a plurality of second oil inlet channel, fourth core part is equipped with a plurality of oil injection part, and the other end of each oil passage along the axial direction corresponds and links together a plurality of oil injection part, cooling oil can flow through first oil inlet channel a plurality of second oil inlet channel, a plurality of oil passage and a plurality of oil injection part in proper order, and is sprayed by a plurality of oil injection part. The oil passage of the utility model can mix the cooling oil that flows from different oil inlet channels, effectively reduces the flow resistance, guarantees the even oil temperature.

The utility model relates to the technical field of oil cooling pipes, in particular to a riveting forming oil cooling pipe which comprises a first metal pipe, a connecting piece and a second metal pipe, the first metal pipe and the second metal pipe are fixedly connected with the connecting piece in the same mode, limiting holes are formed in the two sides of the connecting piece, protruding blocks are fixed to the two sides of the connecting piece, and the protruding blocks are connected with the first metal pipe and the second metal pipe in the same mode. A fixing hole is formed in the middle of the protruding block and communicated with the limiting hole, the first metal pipe and the second metal pipe jointly penetrate through the fixing hole and the limiting hole, a first fixing rib and a second fixing rib are arranged in the middle of the first metal pipe, and an expanding pipe is installed at one end of the first metal pipe. One end of the expanding pipe abuts against the limiting hole. The connecting points are firm and reliable; the process is simple and easy to operate; meanwhile, when the oil cooling pipe is produced, the working environment is good, no dust or smoke is discharged, the working intensity of workers is reduced, and harm to human bodies is reduced.

The utility model discloses a quenching oil cooling device for upper and lower surfaces of a saw blade, which relates to the technical field of saw blade quenching and comprises a quenching oil cylinder, a main oil way is arranged on one side of the quenching oil cylinder, and an upper oil way and a lower oil way are respectively arranged at the output end of the main oil way; an upper spraying disc is arranged at the output end of the upper oil way, and a lower spraying disc is arranged at the output end of the lower oil way. A saw blade is arranged between the upper spraying disc and the lower spraying disc; a plurality of first oil spraying holes are formed in the upper spraying disc, and a plurality of second oil spraying holes are formed in the lower spraying disc; the diameter of the second oil spraying holes is smaller than that of the first oil spraying holes. According to the device, the oil spraying speed and efficiency of the second oil spraying holes can be effectively improved, oil can rapidly take away heat on the lower surface of the saw blade, the quenching hardness of the upper surface and the lower surface of the saw blade tends to be consistent, the overall performance stability of the saw blade is improved, the problems of saw blade deformation, warping and the like caused by the hardness difference of the upper surface and the lower surface of the saw blade are solved, and the saw blade quality is improved. The saw blade quality is ensured.

The application provides a composite heat dissipation controller power module, which comprises a shell, a power module, a cold plate, a cover and a control board group, a capacitor core is packaged in the shell; the power module is sealingly connected with the shell and forms a first cooling cavity; the cold plate has a first packaging surface and a second packaging surface on opposite sides, a second cooling cavity is formed in the cold plate and an opening is formed on the first packaging surface and the second packaging surface respectively, the power module is sealingly connected with the second packaging surface to close the opening of the second packaging surface; the cover is sealingly connected with the first packaging surface and forms a third cooling cavity which is connected with the second cooling cavity; the control board group is connected with the first packaging surface in the third cooling cavity and corresponds to the opening of the first packaging surface; the application adopts a water cooling and oil cooling combined cooling mode, which can improve the cooling effect of the power module and the control board group, reduce the risk of local high temperature of the power module, and ensure the stability and reliability of the power module operation.

This disclosure relates to a stator oil-cooling structure and a motor. The stator oil-cooling structure includes a stator core, a stator winding, and a housing. The stator core includes multiple stacked laminations, each lamination including a yoke and multiple teeth. The stator winding is fixedly disposed on the teeth. The housing is fitted over the stator core, and an oil passage is formed on the inner wall of the housing. Each lamination includes a central lamination and main laminations on either side of the central lamination. The yoke of the central lamination has multiple evenly distributed oil-receiving recesses along its circumference, which communicate with the oil passages in the housing. The main laminations have multiple evenly distributed oil-passing holes along their circumference, which are located near the teeth and communicate with the ends of the oil-receiving recesses near the teeth. This design ensures the oil passages are close to the stator windings, resulting in a short heat conduction distance, minimal yoke space occupied by the oil passages, and minimal impact on the electromagnetic performance of the laminations.

The utility model relates to the technical field of semi-coke preparation, in particular to a hydraulic oil cooling device for semi-coke preparation, which comprises a pipe body and further comprises a condensation pipe arranged on the inner wall of the pipe body, the inner wall of the condensation pipe is communicated with a connecting pipe used for adding cooling liquid, the inner wall of the pipe body is communicated with a liquid inlet pipe, and the inner wall of the pipe body is communicated with a liquid outlet pipe. The inner wall of the pipe body is communicated with a liquid discharge pipe; according to the hydraulic oil cooling device, hydraulic oil can be conveniently cooled through the arrangement of the pipe body, the condensation pipe, the connecting pipe, the liquid inlet pipe and the liquid outlet pipe, and the pipe body can be conveniently supported and fixed through the arrangement of the supporting mechanism; the stable hydraulic oil cooling device can ensure that the hydraulic system operates in a proper temperature range, so that the working efficiency and the response speed of the hydraulic system are improved, the production process of semi-coke preparation is accelerated, and the overall production efficiency is improved.

This invention discloses a heat treatment process for reducing the fracture sensitivity of 20Mn2A circular link chains, comprising the following steps: (1) Pretreatment: heating to 650±10℃ at a rate of 4.8-5.2℃ / min in a vacuum annealing furnace, holding for 1-3 hours, and then cooling to room temperature in the furnace; (2) Graded quenching; (3) Two-stage tempering: the first stage is low-temperature tempering: holding at 200-210℃ for 2-3 hours, followed by oil cooling; the second stage is medium-temperature tempering: holding at 380-400℃ for 1-2 hours, followed by oil cooling. This invention, through a scientific three-stage treatment, achieves an optimized match between the strength and toughness of 20Mn2A circular link chains, with the specific objectives being: tensile strength ≥1050N / mm², low-temperature impact energy at -40℃ ≥48J, and internal residual stress ≤85MPa, significantly reducing fracture sensitivity and extending service life.

The utility model discloses an oil cooler and an oil cooling system, and relates to the technical field of oil cooling, a water cooling cavity, a first water inlet and a first water outlet are formed in the oil cooler, and the water cooling cavity is communicated with the first water inlet and the first water outlet; the oil cooler further comprises a first layer plate, the first layer plate and the outer wall of the water cooling cavity are arranged in a spaced mode, a gap is formed between the first layer plate and the outer wall of the water cooling cavity, and the gap communicates with the outside to form an oil cooling channel. The oil cooling channel is communicated with the outside, the oil cooler can be directly installed in an oil pan or other parts, oil flows into or out of the oil cooler through the gap and does not need to flow through an oil inlet pipe and an oil outlet pipe, the flowing resistance is small, the influence of the oil inlet pipe and the oil outlet pipe on the flowing efficiency of the oil is reduced, and the cooling efficiency of the oil cooler is improved.

The invention relates to the technical field of preparation of aluminum alloy forgings, in particular to a preparation method of a high-performance 6-series aluminum alloy forgings based on semi-solid pretreatment and fog cooling-oil cooling composite quenching, which comprises the following steps: step 1, smelting; step 2, cooling the melt, carrying out ultrasonic treatment to a semi-solid temperature, and standing for solidification; thirdly, the cast ingot is subjected to heat preservation treatment; fourthly, the cast ingot subjected to heat preservation treatment is subjected to hot die forging; fifthly, the forge piece is subjected to composite quenching, water mist is adopted for first-stage rapid cooling, and then oil cooling is adopted for second-stage slow cooling; and sixthly, the cooled forge piece is subjected to aging treatment. And the precipitation behavior of second-phase particles is regulated and controlled by adopting a process of fog cooling first and then oil cooling, the residual stress in the forge piece is reduced, the alloy strength is improved, and the synergistic effect of fine grain strengthening and solid solution strengthening is fully exerted.

The utility model discloses a hydraulic oil cooling system applied to an underground fixed hydraulic crusher, which comprises a base, a hydraulic oil tank mounted on the base and an underground water source. A water-cooling heat exchanger, a driving motor and a hydraulic pump driven by the driving motor are further installed on the machine base. The liquid inlet end of the hydraulic pump is connected with the hydraulic oil tank through a pipeline, and the liquid outlet end of the hydraulic pump is connected with the tube pass liquid inlet end of the water-cooling heat exchanger through a pipeline. The tube pass liquid outlet end of the water-cooling heat exchanger is connected with the hydraulic oil tank through an oil return pipe. The shell side water inlet end of the water-cooling heat exchanger is connected with the underground water source through a water inlet pipe, and the shell side water outlet end of the water-cooling heat exchanger is connected with a water return pipe. And a filtering and sewage discharging mechanism is mounted on the water inlet pipe. On the premise of not conflicting with an original heat dissipation system, the underground water source is fully utilized, various problems of equipment caused by high temperature of hydraulic oil are reduced, and the underground practical working requirements are met.

The utility model relates to the technical field of fans, and discloses a fan easy to mount and dismount, which comprises a frame body, the right side of the upper end of the frame body is fixedly connected with a shell, the right side of the shell is fixedly connected with an air inlet, the left side of the shell is connected with a movable plate through a limiting assembly, and the outer wall of the movable plate is provided with a limiting hole. The outer wall of the top end of the machine shell is fixedly connected with an air outlet, the left side of the upper end of the frame body is fixedly connected with a first supporting plate, the upper end of the first supporting plate is connected with a rotating shaft through a driving assembly, the outer wall of the rotating shaft is fixedly connected with an oil cooling base, and one end of the rotating shaft is connected with an impeller through a fixing assembly. The impeller is arranged in the machine shell. According to the utility model, through the clamping arrangement of the movable plate and the clamping plate, the inspection, maintenance or replacement work of the impeller is more efficient and labor-saving, and through the separation design of the motor and the rotating shaft and the arrangement of the cold oil seat, the overheating of parts is effectively avoided, and the service life of the fan is prolonged.

This utility model discloses a hot and cold stratified oil tank system with carbon recovery and multi-stage filtration functions, relating to the field of machine tool oil cooling technology. It includes an oil tank body; the oil tank body has a hot oil chamber and a cold oil chamber; the oil tank body is provided with a hot oil inlet, a hot oil outlet, a cold oil inlet, and a cold oil outlet; the hot oil inlet and hot oil outlet are opposite each other and both communicate with the hot oil chamber; the cold oil inlet and cold oil outlet are opposite each other and both communicate with the cold oil chamber; a settling tank is provided at the bottom of the hot oil chamber, and the settling tank can be removed from the hot oil chamber; a hot oil filter chamber is provided inside the hot oil chamber, located above the settling tank, and a hot oil filter assembly for filtering the flowing hot oil is provided inside the hot oil filter chamber; a transition chamber is provided at one end of the hot oil filter chamber near the hot oil inlet, the transition chamber communicating with the hot oil filter chamber and the settling tank. This system enables internal cleaning of the oil tank and reduces waste.

A method for monitoring an oil flow, generated by an oil pump, in an oil cooling circuit of a thermal management system, includes: arranging a first pressure sensor at a first point in the cooling circuit; arranging a second pressure sensor at a second point in the oil cooling circuit; determining pressure difference values based on recorded pressures; and comparing the pressure difference values with a predeterminable comparison value for the pressure difference so as to check for a fault.

The application discloses a composite modification process of a high-toughness wear-resistant cutter ring for a shield tunneling machine, and comprises the following steps: step one, a medium-carbon alloy steel material is used as a cutter ring base body, and a blank is prepared by using a hot forging process; step two, the blank obtained in the step one is subjected to carburizing quenching treatment, and then is subjected to oil cooling; step three, the cutter ring after the oil cooling in the step two is subjected to high-temperature tempering treatment, so that unstable martensite after quenching is completely converted into tempered martensite; step four, the cutter ring after the high-temperature tempering in the step three is subjected to surface induction quenching; step five, the cutter ring after the induction quenching in the step four is subjected to low-temperature tempering treatment; and step six, the cutter ring after the low-temperature tempering in the step five is subjected to surface layer ultrasonic impact modification, so as to obtain a composite modified cutter ring. The application uses heat treatment processes such as carburizing and nitriding and ultrasonic impact modification, and constructs a gradient structure cutter ring, so that the cutter ring has high wear resistance, buffer resistance and impact toughness.

The invention discloses a passive multi-stage heat management device with a phase change material and a control strategy, and relates to the technical field of new energy automobile motor heat dissipation, the motor heat management device is mainly composed of a forced air cooling system, an oil cooling small circulation system and an oil cooling large circulation system, and energy consumption is reduced. According to the device, passive three-level temperature control is achieved through the wax thermostat and the temperature control switches at the oil inlet and the oil outlet, so that the heat dissipation requirements of the driving motor of the new energy automobile under different working conditions are met, the structure is simple, operation is stable, the optimal temperature of motor operation can be guaranteed, the influence of too fast and too slow heat dissipation on the motor performance is reduced, and the service life of the motor is prolonged. And the operation capability in an extreme environment is improved. In order to solve the problem that a traditional motor is low in heat dissipation efficiency, the system innovatively applies a phase change material, rotor heat is intensively conducted to heat collection plates at the upper end and the lower end and then rapidly dissipated through an oil cooling system, the problem that the traditional motor is low in heat dissipation efficiency is effectively solved, and a guarantee is provided for stable operation of the new energy automobile driving motor.

The invention discloses a fuel heat exchange system of a gas turbine. The fuel heat exchange system comprises a lubricating oil circulation channel, a heat exchange module, an electric heating module and a controller. A pipeline of the lubricating oil circulation channel penetrates through the heat exchange module; an input port of the heat exchange module communicates with a fuel input pipe, an output port of the heat exchange module communicates with an input port of the electric heating module through a pipeline, and the heat exchange module is used for conducting heat exchange on input fuel and lubricating oil in a lubricating oil circulation channel pipeline and outputting the fuel subjected to heat exchange to the electric heating module through the pipeline. And the electric heating module is used for electrically heating the fuel subjected to heat exchange and then conveying the fuel to the gas turbine through a pipeline. According to the fuel heat exchange system of the gas turbine, fuel consumption can be reduced, the workload of lubricating oil cooling equipment is reduced, and the heat efficiency of the gas turbine is improved.